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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" |
2ba95b9b | 58 | #include "vec.h" |
14f9c5c9 | 59 | |
4c4b4cd2 PH |
60 | /* Define whether or not the C operator '/' truncates towards zero for |
61 | differently signed operands (truncation direction is undefined in C). | |
62 | Copied from valarith.c. */ | |
63 | ||
64 | #ifndef TRUNCATION_TOWARDS_ZERO | |
65 | #define TRUNCATION_TOWARDS_ZERO ((-5 / 2) == -2) | |
66 | #endif | |
67 | ||
4c4b4cd2 | 68 | static void extract_string (CORE_ADDR addr, char *buf); |
14f9c5c9 | 69 | |
14f9c5c9 AS |
70 | static void modify_general_field (char *, LONGEST, int, int); |
71 | ||
d2e4a39e | 72 | static struct type *desc_base_type (struct type *); |
14f9c5c9 | 73 | |
d2e4a39e | 74 | static struct type *desc_bounds_type (struct type *); |
14f9c5c9 | 75 | |
d2e4a39e | 76 | static struct value *desc_bounds (struct value *); |
14f9c5c9 | 77 | |
d2e4a39e | 78 | static int fat_pntr_bounds_bitpos (struct type *); |
14f9c5c9 | 79 | |
d2e4a39e | 80 | static int fat_pntr_bounds_bitsize (struct type *); |
14f9c5c9 | 81 | |
d2e4a39e | 82 | static struct type *desc_data_type (struct type *); |
14f9c5c9 | 83 | |
d2e4a39e | 84 | static struct value *desc_data (struct value *); |
14f9c5c9 | 85 | |
d2e4a39e | 86 | static int fat_pntr_data_bitpos (struct type *); |
14f9c5c9 | 87 | |
d2e4a39e | 88 | static int fat_pntr_data_bitsize (struct type *); |
14f9c5c9 | 89 | |
d2e4a39e | 90 | static struct value *desc_one_bound (struct value *, int, int); |
14f9c5c9 | 91 | |
d2e4a39e | 92 | static int desc_bound_bitpos (struct type *, int, int); |
14f9c5c9 | 93 | |
d2e4a39e | 94 | static int desc_bound_bitsize (struct type *, int, int); |
14f9c5c9 | 95 | |
d2e4a39e | 96 | static struct type *desc_index_type (struct type *, int); |
14f9c5c9 | 97 | |
d2e4a39e | 98 | static int desc_arity (struct type *); |
14f9c5c9 | 99 | |
d2e4a39e | 100 | static int ada_type_match (struct type *, struct type *, int); |
14f9c5c9 | 101 | |
d2e4a39e | 102 | static int ada_args_match (struct symbol *, struct value **, int); |
14f9c5c9 | 103 | |
4c4b4cd2 | 104 | static struct value *ensure_lval (struct value *, CORE_ADDR *); |
14f9c5c9 | 105 | |
d2e4a39e | 106 | static struct value *convert_actual (struct value *, struct type *, |
4c4b4cd2 | 107 | CORE_ADDR *); |
14f9c5c9 | 108 | |
d2e4a39e | 109 | static struct value *make_array_descriptor (struct type *, struct value *, |
4c4b4cd2 | 110 | CORE_ADDR *); |
14f9c5c9 | 111 | |
4c4b4cd2 | 112 | static void ada_add_block_symbols (struct obstack *, |
76a01679 | 113 | struct block *, const char *, |
2570f2b7 | 114 | domain_enum, struct objfile *, int); |
14f9c5c9 | 115 | |
4c4b4cd2 | 116 | static int is_nonfunction (struct ada_symbol_info *, int); |
14f9c5c9 | 117 | |
76a01679 | 118 | static void add_defn_to_vec (struct obstack *, struct symbol *, |
2570f2b7 | 119 | struct block *); |
14f9c5c9 | 120 | |
4c4b4cd2 PH |
121 | static int num_defns_collected (struct obstack *); |
122 | ||
123 | static struct ada_symbol_info *defns_collected (struct obstack *, int); | |
14f9c5c9 | 124 | |
d2e4a39e | 125 | static struct partial_symbol *ada_lookup_partial_symbol (struct partial_symtab |
76a01679 JB |
126 | *, const char *, int, |
127 | domain_enum, int); | |
14f9c5c9 | 128 | |
d2e4a39e | 129 | static struct symtab *symtab_for_sym (struct symbol *); |
14f9c5c9 | 130 | |
4c4b4cd2 | 131 | static struct value *resolve_subexp (struct expression **, int *, int, |
76a01679 | 132 | struct type *); |
14f9c5c9 | 133 | |
d2e4a39e | 134 | static void replace_operator_with_call (struct expression **, int, int, int, |
4c4b4cd2 | 135 | struct symbol *, struct block *); |
14f9c5c9 | 136 | |
d2e4a39e | 137 | static int possible_user_operator_p (enum exp_opcode, struct value **); |
14f9c5c9 | 138 | |
4c4b4cd2 PH |
139 | static char *ada_op_name (enum exp_opcode); |
140 | ||
141 | static const char *ada_decoded_op_name (enum exp_opcode); | |
14f9c5c9 | 142 | |
d2e4a39e | 143 | static int numeric_type_p (struct type *); |
14f9c5c9 | 144 | |
d2e4a39e | 145 | static int integer_type_p (struct type *); |
14f9c5c9 | 146 | |
d2e4a39e | 147 | static int scalar_type_p (struct type *); |
14f9c5c9 | 148 | |
d2e4a39e | 149 | static int discrete_type_p (struct type *); |
14f9c5c9 | 150 | |
aeb5907d JB |
151 | static enum ada_renaming_category parse_old_style_renaming (struct type *, |
152 | const char **, | |
153 | int *, | |
154 | const char **); | |
155 | ||
156 | static struct symbol *find_old_style_renaming_symbol (const char *, | |
157 | struct block *); | |
158 | ||
4c4b4cd2 | 159 | static struct type *ada_lookup_struct_elt_type (struct type *, char *, |
76a01679 | 160 | int, int, int *); |
4c4b4cd2 | 161 | |
d2e4a39e | 162 | static struct value *evaluate_subexp (struct type *, struct expression *, |
4c4b4cd2 | 163 | int *, enum noside); |
14f9c5c9 | 164 | |
d2e4a39e | 165 | static struct value *evaluate_subexp_type (struct expression *, int *); |
14f9c5c9 | 166 | |
d2e4a39e | 167 | static int is_dynamic_field (struct type *, int); |
14f9c5c9 | 168 | |
10a2c479 | 169 | static struct type *to_fixed_variant_branch_type (struct type *, |
fc1a4b47 | 170 | const gdb_byte *, |
4c4b4cd2 PH |
171 | CORE_ADDR, struct value *); |
172 | ||
173 | static struct type *to_fixed_array_type (struct type *, struct value *, int); | |
14f9c5c9 | 174 | |
d2e4a39e | 175 | static struct type *to_fixed_range_type (char *, struct value *, |
4c4b4cd2 | 176 | struct objfile *); |
14f9c5c9 | 177 | |
d2e4a39e | 178 | static struct type *to_static_fixed_type (struct type *); |
f192137b | 179 | static struct type *static_unwrap_type (struct type *type); |
14f9c5c9 | 180 | |
d2e4a39e | 181 | static struct value *unwrap_value (struct value *); |
14f9c5c9 | 182 | |
d2e4a39e | 183 | static struct type *packed_array_type (struct type *, long *); |
14f9c5c9 | 184 | |
d2e4a39e | 185 | static struct type *decode_packed_array_type (struct type *); |
14f9c5c9 | 186 | |
d2e4a39e | 187 | static struct value *decode_packed_array (struct value *); |
14f9c5c9 | 188 | |
d2e4a39e | 189 | static struct value *value_subscript_packed (struct value *, int, |
4c4b4cd2 | 190 | struct value **); |
14f9c5c9 | 191 | |
52ce6436 PH |
192 | static void move_bits (gdb_byte *, int, const gdb_byte *, int, int); |
193 | ||
4c4b4cd2 PH |
194 | static struct value *coerce_unspec_val_to_type (struct value *, |
195 | struct type *); | |
14f9c5c9 | 196 | |
d2e4a39e | 197 | static struct value *get_var_value (char *, char *); |
14f9c5c9 | 198 | |
d2e4a39e | 199 | static int lesseq_defined_than (struct symbol *, struct symbol *); |
14f9c5c9 | 200 | |
d2e4a39e | 201 | static int equiv_types (struct type *, struct type *); |
14f9c5c9 | 202 | |
d2e4a39e | 203 | static int is_name_suffix (const char *); |
14f9c5c9 | 204 | |
d2e4a39e | 205 | static int wild_match (const char *, int, const char *); |
14f9c5c9 | 206 | |
d2e4a39e | 207 | static struct value *ada_coerce_ref (struct value *); |
14f9c5c9 | 208 | |
4c4b4cd2 PH |
209 | static LONGEST pos_atr (struct value *); |
210 | ||
3cb382c9 | 211 | static struct value *value_pos_atr (struct type *, struct value *); |
14f9c5c9 | 212 | |
d2e4a39e | 213 | static struct value *value_val_atr (struct type *, struct value *); |
14f9c5c9 | 214 | |
4c4b4cd2 PH |
215 | static struct symbol *standard_lookup (const char *, const struct block *, |
216 | domain_enum); | |
14f9c5c9 | 217 | |
4c4b4cd2 PH |
218 | static struct value *ada_search_struct_field (char *, struct value *, int, |
219 | struct type *); | |
220 | ||
221 | static struct value *ada_value_primitive_field (struct value *, int, int, | |
222 | struct type *); | |
223 | ||
76a01679 | 224 | static int find_struct_field (char *, struct type *, int, |
52ce6436 | 225 | struct type **, int *, int *, int *, int *); |
4c4b4cd2 PH |
226 | |
227 | static struct value *ada_to_fixed_value_create (struct type *, CORE_ADDR, | |
228 | struct value *); | |
229 | ||
230 | static struct value *ada_to_fixed_value (struct value *); | |
14f9c5c9 | 231 | |
4c4b4cd2 PH |
232 | static int ada_resolve_function (struct ada_symbol_info *, int, |
233 | struct value **, int, const char *, | |
234 | struct type *); | |
235 | ||
236 | static struct value *ada_coerce_to_simple_array (struct value *); | |
237 | ||
238 | static int ada_is_direct_array_type (struct type *); | |
239 | ||
72d5681a PH |
240 | static void ada_language_arch_info (struct gdbarch *, |
241 | struct language_arch_info *); | |
714e53ab PH |
242 | |
243 | static void check_size (const struct type *); | |
52ce6436 PH |
244 | |
245 | static struct value *ada_index_struct_field (int, struct value *, int, | |
246 | struct type *); | |
247 | ||
248 | static struct value *assign_aggregate (struct value *, struct value *, | |
249 | struct expression *, int *, enum noside); | |
250 | ||
251 | static void aggregate_assign_from_choices (struct value *, struct value *, | |
252 | struct expression *, | |
253 | int *, LONGEST *, int *, | |
254 | int, LONGEST, LONGEST); | |
255 | ||
256 | static void aggregate_assign_positional (struct value *, struct value *, | |
257 | struct expression *, | |
258 | int *, LONGEST *, int *, int, | |
259 | LONGEST, LONGEST); | |
260 | ||
261 | ||
262 | static void aggregate_assign_others (struct value *, struct value *, | |
263 | struct expression *, | |
264 | int *, LONGEST *, int, LONGEST, LONGEST); | |
265 | ||
266 | ||
267 | static void add_component_interval (LONGEST, LONGEST, LONGEST *, int *, int); | |
268 | ||
269 | ||
270 | static struct value *ada_evaluate_subexp (struct type *, struct expression *, | |
271 | int *, enum noside); | |
272 | ||
273 | static void ada_forward_operator_length (struct expression *, int, int *, | |
274 | int *); | |
4c4b4cd2 PH |
275 | \f |
276 | ||
76a01679 | 277 | |
4c4b4cd2 | 278 | /* Maximum-sized dynamic type. */ |
14f9c5c9 AS |
279 | static unsigned int varsize_limit; |
280 | ||
4c4b4cd2 PH |
281 | /* FIXME: brobecker/2003-09-17: No longer a const because it is |
282 | returned by a function that does not return a const char *. */ | |
283 | static char *ada_completer_word_break_characters = | |
284 | #ifdef VMS | |
285 | " \t\n!@#%^&*()+=|~`}{[]\";:?/,-"; | |
286 | #else | |
14f9c5c9 | 287 | " \t\n!@#$%^&*()+=|~`}{[]\";:?/,-"; |
4c4b4cd2 | 288 | #endif |
14f9c5c9 | 289 | |
4c4b4cd2 | 290 | /* The name of the symbol to use to get the name of the main subprogram. */ |
76a01679 | 291 | static const char ADA_MAIN_PROGRAM_SYMBOL_NAME[] |
4c4b4cd2 | 292 | = "__gnat_ada_main_program_name"; |
14f9c5c9 | 293 | |
4c4b4cd2 PH |
294 | /* Limit on the number of warnings to raise per expression evaluation. */ |
295 | static int warning_limit = 2; | |
296 | ||
297 | /* Number of warning messages issued; reset to 0 by cleanups after | |
298 | expression evaluation. */ | |
299 | static int warnings_issued = 0; | |
300 | ||
301 | static const char *known_runtime_file_name_patterns[] = { | |
302 | ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS NULL | |
303 | }; | |
304 | ||
305 | static const char *known_auxiliary_function_name_patterns[] = { | |
306 | ADA_KNOWN_AUXILIARY_FUNCTION_NAME_PATTERNS NULL | |
307 | }; | |
308 | ||
309 | /* Space for allocating results of ada_lookup_symbol_list. */ | |
310 | static struct obstack symbol_list_obstack; | |
311 | ||
312 | /* Utilities */ | |
313 | ||
41d27058 JB |
314 | /* Given DECODED_NAME a string holding a symbol name in its |
315 | decoded form (ie using the Ada dotted notation), returns | |
316 | its unqualified name. */ | |
317 | ||
318 | static const char * | |
319 | ada_unqualified_name (const char *decoded_name) | |
320 | { | |
321 | const char *result = strrchr (decoded_name, '.'); | |
322 | ||
323 | if (result != NULL) | |
324 | result++; /* Skip the dot... */ | |
325 | else | |
326 | result = decoded_name; | |
327 | ||
328 | return result; | |
329 | } | |
330 | ||
331 | /* Return a string starting with '<', followed by STR, and '>'. | |
332 | The result is good until the next call. */ | |
333 | ||
334 | static char * | |
335 | add_angle_brackets (const char *str) | |
336 | { | |
337 | static char *result = NULL; | |
338 | ||
339 | xfree (result); | |
340 | result = (char *) xmalloc ((strlen (str) + 3) * sizeof (char)); | |
341 | ||
342 | sprintf (result, "<%s>", str); | |
343 | return result; | |
344 | } | |
96d887e8 | 345 | |
4c4b4cd2 PH |
346 | static char * |
347 | ada_get_gdb_completer_word_break_characters (void) | |
348 | { | |
349 | return ada_completer_word_break_characters; | |
350 | } | |
351 | ||
e79af960 JB |
352 | /* Print an array element index using the Ada syntax. */ |
353 | ||
354 | static void | |
355 | ada_print_array_index (struct value *index_value, struct ui_file *stream, | |
79a45b7d | 356 | const struct value_print_options *options) |
e79af960 | 357 | { |
79a45b7d | 358 | LA_VALUE_PRINT (index_value, stream, options); |
e79af960 JB |
359 | fprintf_filtered (stream, " => "); |
360 | } | |
361 | ||
4c4b4cd2 PH |
362 | /* Read the string located at ADDR from the inferior and store the |
363 | result into BUF. */ | |
364 | ||
365 | static void | |
14f9c5c9 AS |
366 | extract_string (CORE_ADDR addr, char *buf) |
367 | { | |
d2e4a39e | 368 | int char_index = 0; |
14f9c5c9 | 369 | |
4c4b4cd2 PH |
370 | /* Loop, reading one byte at a time, until we reach the '\000' |
371 | end-of-string marker. */ | |
d2e4a39e AS |
372 | do |
373 | { | |
374 | target_read_memory (addr + char_index * sizeof (char), | |
4c4b4cd2 | 375 | buf + char_index * sizeof (char), sizeof (char)); |
d2e4a39e AS |
376 | char_index++; |
377 | } | |
378 | while (buf[char_index - 1] != '\000'); | |
14f9c5c9 AS |
379 | } |
380 | ||
f27cf670 | 381 | /* Assuming VECT points to an array of *SIZE objects of size |
14f9c5c9 | 382 | ELEMENT_SIZE, grow it to contain at least MIN_SIZE objects, |
f27cf670 | 383 | updating *SIZE as necessary and returning the (new) array. */ |
14f9c5c9 | 384 | |
f27cf670 AS |
385 | void * |
386 | grow_vect (void *vect, size_t *size, size_t min_size, int element_size) | |
14f9c5c9 | 387 | { |
d2e4a39e AS |
388 | if (*size < min_size) |
389 | { | |
390 | *size *= 2; | |
391 | if (*size < min_size) | |
4c4b4cd2 | 392 | *size = min_size; |
f27cf670 | 393 | vect = xrealloc (vect, *size * element_size); |
d2e4a39e | 394 | } |
f27cf670 | 395 | return vect; |
14f9c5c9 AS |
396 | } |
397 | ||
398 | /* True (non-zero) iff TARGET matches FIELD_NAME up to any trailing | |
4c4b4cd2 | 399 | suffix of FIELD_NAME beginning "___". */ |
14f9c5c9 AS |
400 | |
401 | static int | |
ebf56fd3 | 402 | field_name_match (const char *field_name, const char *target) |
14f9c5c9 AS |
403 | { |
404 | int len = strlen (target); | |
d2e4a39e | 405 | return |
4c4b4cd2 PH |
406 | (strncmp (field_name, target, len) == 0 |
407 | && (field_name[len] == '\0' | |
408 | || (strncmp (field_name + len, "___", 3) == 0 | |
76a01679 JB |
409 | && strcmp (field_name + strlen (field_name) - 6, |
410 | "___XVN") != 0))); | |
14f9c5c9 AS |
411 | } |
412 | ||
413 | ||
4c4b4cd2 PH |
414 | /* Assuming TYPE is a TYPE_CODE_STRUCT, find the field whose name matches |
415 | FIELD_NAME, and return its index. This function also handles fields | |
416 | whose name have ___ suffixes because the compiler sometimes alters | |
417 | their name by adding such a suffix to represent fields with certain | |
418 | constraints. If the field could not be found, return a negative | |
419 | number if MAYBE_MISSING is set. Otherwise raise an error. */ | |
420 | ||
421 | int | |
422 | ada_get_field_index (const struct type *type, const char *field_name, | |
423 | int maybe_missing) | |
424 | { | |
425 | int fieldno; | |
426 | for (fieldno = 0; fieldno < TYPE_NFIELDS (type); fieldno++) | |
427 | if (field_name_match (TYPE_FIELD_NAME (type, fieldno), field_name)) | |
428 | return fieldno; | |
429 | ||
430 | if (!maybe_missing) | |
323e0a4a | 431 | error (_("Unable to find field %s in struct %s. Aborting"), |
4c4b4cd2 PH |
432 | field_name, TYPE_NAME (type)); |
433 | ||
434 | return -1; | |
435 | } | |
436 | ||
437 | /* The length of the prefix of NAME prior to any "___" suffix. */ | |
14f9c5c9 AS |
438 | |
439 | int | |
d2e4a39e | 440 | ada_name_prefix_len (const char *name) |
14f9c5c9 AS |
441 | { |
442 | if (name == NULL) | |
443 | return 0; | |
d2e4a39e | 444 | else |
14f9c5c9 | 445 | { |
d2e4a39e | 446 | const char *p = strstr (name, "___"); |
14f9c5c9 | 447 | if (p == NULL) |
4c4b4cd2 | 448 | return strlen (name); |
14f9c5c9 | 449 | else |
4c4b4cd2 | 450 | return p - name; |
14f9c5c9 AS |
451 | } |
452 | } | |
453 | ||
4c4b4cd2 PH |
454 | /* Return non-zero if SUFFIX is a suffix of STR. |
455 | Return zero if STR is null. */ | |
456 | ||
14f9c5c9 | 457 | static int |
d2e4a39e | 458 | is_suffix (const char *str, const char *suffix) |
14f9c5c9 AS |
459 | { |
460 | int len1, len2; | |
461 | if (str == NULL) | |
462 | return 0; | |
463 | len1 = strlen (str); | |
464 | len2 = strlen (suffix); | |
4c4b4cd2 | 465 | return (len1 >= len2 && strcmp (str + len1 - len2, suffix) == 0); |
14f9c5c9 AS |
466 | } |
467 | ||
4c4b4cd2 PH |
468 | /* The contents of value VAL, treated as a value of type TYPE. The |
469 | result is an lval in memory if VAL is. */ | |
14f9c5c9 | 470 | |
d2e4a39e | 471 | static struct value * |
4c4b4cd2 | 472 | coerce_unspec_val_to_type (struct value *val, struct type *type) |
14f9c5c9 | 473 | { |
61ee279c | 474 | type = ada_check_typedef (type); |
df407dfe | 475 | if (value_type (val) == type) |
4c4b4cd2 | 476 | return val; |
d2e4a39e | 477 | else |
14f9c5c9 | 478 | { |
4c4b4cd2 PH |
479 | struct value *result; |
480 | ||
481 | /* Make sure that the object size is not unreasonable before | |
482 | trying to allocate some memory for it. */ | |
714e53ab | 483 | check_size (type); |
4c4b4cd2 PH |
484 | |
485 | result = allocate_value (type); | |
486 | VALUE_LVAL (result) = VALUE_LVAL (val); | |
9bbda503 AC |
487 | set_value_bitsize (result, value_bitsize (val)); |
488 | set_value_bitpos (result, value_bitpos (val)); | |
df407dfe | 489 | VALUE_ADDRESS (result) = VALUE_ADDRESS (val) + value_offset (val); |
d69fe07e | 490 | if (value_lazy (val) |
df407dfe | 491 | || TYPE_LENGTH (type) > TYPE_LENGTH (value_type (val))) |
dfa52d88 | 492 | set_value_lazy (result, 1); |
d2e4a39e | 493 | else |
0fd88904 | 494 | memcpy (value_contents_raw (result), value_contents (val), |
4c4b4cd2 | 495 | TYPE_LENGTH (type)); |
14f9c5c9 AS |
496 | return result; |
497 | } | |
498 | } | |
499 | ||
fc1a4b47 AC |
500 | static const gdb_byte * |
501 | cond_offset_host (const gdb_byte *valaddr, long offset) | |
14f9c5c9 AS |
502 | { |
503 | if (valaddr == NULL) | |
504 | return NULL; | |
505 | else | |
506 | return valaddr + offset; | |
507 | } | |
508 | ||
509 | static CORE_ADDR | |
ebf56fd3 | 510 | cond_offset_target (CORE_ADDR address, long offset) |
14f9c5c9 AS |
511 | { |
512 | if (address == 0) | |
513 | return 0; | |
d2e4a39e | 514 | else |
14f9c5c9 AS |
515 | return address + offset; |
516 | } | |
517 | ||
4c4b4cd2 PH |
518 | /* Issue a warning (as for the definition of warning in utils.c, but |
519 | with exactly one argument rather than ...), unless the limit on the | |
520 | number of warnings has passed during the evaluation of the current | |
521 | expression. */ | |
a2249542 | 522 | |
77109804 AC |
523 | /* FIXME: cagney/2004-10-10: This function is mimicking the behavior |
524 | provided by "complaint". */ | |
525 | static void lim_warning (const char *format, ...) ATTR_FORMAT (printf, 1, 2); | |
526 | ||
14f9c5c9 | 527 | static void |
a2249542 | 528 | lim_warning (const char *format, ...) |
14f9c5c9 | 529 | { |
a2249542 MK |
530 | va_list args; |
531 | va_start (args, format); | |
532 | ||
4c4b4cd2 PH |
533 | warnings_issued += 1; |
534 | if (warnings_issued <= warning_limit) | |
a2249542 MK |
535 | vwarning (format, args); |
536 | ||
537 | va_end (args); | |
4c4b4cd2 PH |
538 | } |
539 | ||
714e53ab PH |
540 | /* Issue an error if the size of an object of type T is unreasonable, |
541 | i.e. if it would be a bad idea to allocate a value of this type in | |
542 | GDB. */ | |
543 | ||
544 | static void | |
545 | check_size (const struct type *type) | |
546 | { | |
547 | if (TYPE_LENGTH (type) > varsize_limit) | |
323e0a4a | 548 | error (_("object size is larger than varsize-limit")); |
714e53ab PH |
549 | } |
550 | ||
551 | ||
c3e5cd34 PH |
552 | /* Note: would have used MAX_OF_TYPE and MIN_OF_TYPE macros from |
553 | gdbtypes.h, but some of the necessary definitions in that file | |
554 | seem to have gone missing. */ | |
555 | ||
556 | /* Maximum value of a SIZE-byte signed integer type. */ | |
4c4b4cd2 | 557 | static LONGEST |
c3e5cd34 | 558 | max_of_size (int size) |
4c4b4cd2 | 559 | { |
76a01679 JB |
560 | LONGEST top_bit = (LONGEST) 1 << (size * 8 - 2); |
561 | return top_bit | (top_bit - 1); | |
4c4b4cd2 PH |
562 | } |
563 | ||
c3e5cd34 | 564 | /* Minimum value of a SIZE-byte signed integer type. */ |
4c4b4cd2 | 565 | static LONGEST |
c3e5cd34 | 566 | min_of_size (int size) |
4c4b4cd2 | 567 | { |
c3e5cd34 | 568 | return -max_of_size (size) - 1; |
4c4b4cd2 PH |
569 | } |
570 | ||
c3e5cd34 | 571 | /* Maximum value of a SIZE-byte unsigned integer type. */ |
4c4b4cd2 | 572 | static ULONGEST |
c3e5cd34 | 573 | umax_of_size (int size) |
4c4b4cd2 | 574 | { |
76a01679 JB |
575 | ULONGEST top_bit = (ULONGEST) 1 << (size * 8 - 1); |
576 | return top_bit | (top_bit - 1); | |
4c4b4cd2 PH |
577 | } |
578 | ||
c3e5cd34 PH |
579 | /* Maximum value of integral type T, as a signed quantity. */ |
580 | static LONGEST | |
581 | max_of_type (struct type *t) | |
4c4b4cd2 | 582 | { |
c3e5cd34 PH |
583 | if (TYPE_UNSIGNED (t)) |
584 | return (LONGEST) umax_of_size (TYPE_LENGTH (t)); | |
585 | else | |
586 | return max_of_size (TYPE_LENGTH (t)); | |
587 | } | |
588 | ||
589 | /* Minimum value of integral type T, as a signed quantity. */ | |
590 | static LONGEST | |
591 | min_of_type (struct type *t) | |
592 | { | |
593 | if (TYPE_UNSIGNED (t)) | |
594 | return 0; | |
595 | else | |
596 | return min_of_size (TYPE_LENGTH (t)); | |
4c4b4cd2 PH |
597 | } |
598 | ||
599 | /* The largest value in the domain of TYPE, a discrete type, as an integer. */ | |
690cc4eb | 600 | static LONGEST |
4c4b4cd2 PH |
601 | discrete_type_high_bound (struct type *type) |
602 | { | |
76a01679 | 603 | switch (TYPE_CODE (type)) |
4c4b4cd2 PH |
604 | { |
605 | case TYPE_CODE_RANGE: | |
690cc4eb | 606 | return TYPE_HIGH_BOUND (type); |
4c4b4cd2 | 607 | case TYPE_CODE_ENUM: |
690cc4eb PH |
608 | return TYPE_FIELD_BITPOS (type, TYPE_NFIELDS (type) - 1); |
609 | case TYPE_CODE_BOOL: | |
610 | return 1; | |
611 | case TYPE_CODE_CHAR: | |
76a01679 | 612 | case TYPE_CODE_INT: |
690cc4eb | 613 | return max_of_type (type); |
4c4b4cd2 | 614 | default: |
323e0a4a | 615 | error (_("Unexpected type in discrete_type_high_bound.")); |
4c4b4cd2 PH |
616 | } |
617 | } | |
618 | ||
619 | /* The largest value in the domain of TYPE, a discrete type, as an integer. */ | |
690cc4eb | 620 | static LONGEST |
4c4b4cd2 PH |
621 | discrete_type_low_bound (struct type *type) |
622 | { | |
76a01679 | 623 | switch (TYPE_CODE (type)) |
4c4b4cd2 PH |
624 | { |
625 | case TYPE_CODE_RANGE: | |
690cc4eb | 626 | return TYPE_LOW_BOUND (type); |
4c4b4cd2 | 627 | case TYPE_CODE_ENUM: |
690cc4eb PH |
628 | return TYPE_FIELD_BITPOS (type, 0); |
629 | case TYPE_CODE_BOOL: | |
630 | return 0; | |
631 | case TYPE_CODE_CHAR: | |
76a01679 | 632 | case TYPE_CODE_INT: |
690cc4eb | 633 | return min_of_type (type); |
4c4b4cd2 | 634 | default: |
323e0a4a | 635 | error (_("Unexpected type in discrete_type_low_bound.")); |
4c4b4cd2 PH |
636 | } |
637 | } | |
638 | ||
639 | /* The identity on non-range types. For range types, the underlying | |
76a01679 | 640 | non-range scalar type. */ |
4c4b4cd2 PH |
641 | |
642 | static struct type * | |
643 | base_type (struct type *type) | |
644 | { | |
645 | while (type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE) | |
646 | { | |
76a01679 JB |
647 | if (type == TYPE_TARGET_TYPE (type) || TYPE_TARGET_TYPE (type) == NULL) |
648 | return type; | |
4c4b4cd2 PH |
649 | type = TYPE_TARGET_TYPE (type); |
650 | } | |
651 | return type; | |
14f9c5c9 | 652 | } |
4c4b4cd2 | 653 | \f |
76a01679 | 654 | |
4c4b4cd2 | 655 | /* Language Selection */ |
14f9c5c9 AS |
656 | |
657 | /* If the main program is in Ada, return language_ada, otherwise return LANG | |
658 | (the main program is in Ada iif the adainit symbol is found). | |
659 | ||
4c4b4cd2 | 660 | MAIN_PST is not used. */ |
d2e4a39e | 661 | |
14f9c5c9 | 662 | enum language |
d2e4a39e | 663 | ada_update_initial_language (enum language lang, |
4c4b4cd2 | 664 | struct partial_symtab *main_pst) |
14f9c5c9 | 665 | { |
d2e4a39e | 666 | if (lookup_minimal_symbol ("adainit", (const char *) NULL, |
4c4b4cd2 PH |
667 | (struct objfile *) NULL) != NULL) |
668 | return language_ada; | |
14f9c5c9 AS |
669 | |
670 | return lang; | |
671 | } | |
96d887e8 PH |
672 | |
673 | /* If the main procedure is written in Ada, then return its name. | |
674 | The result is good until the next call. Return NULL if the main | |
675 | procedure doesn't appear to be in Ada. */ | |
676 | ||
677 | char * | |
678 | ada_main_name (void) | |
679 | { | |
680 | struct minimal_symbol *msym; | |
681 | CORE_ADDR main_program_name_addr; | |
682 | static char main_program_name[1024]; | |
6c038f32 | 683 | |
96d887e8 PH |
684 | /* For Ada, the name of the main procedure is stored in a specific |
685 | string constant, generated by the binder. Look for that symbol, | |
686 | extract its address, and then read that string. If we didn't find | |
687 | that string, then most probably the main procedure is not written | |
688 | in Ada. */ | |
689 | msym = lookup_minimal_symbol (ADA_MAIN_PROGRAM_SYMBOL_NAME, NULL, NULL); | |
690 | ||
691 | if (msym != NULL) | |
692 | { | |
693 | main_program_name_addr = SYMBOL_VALUE_ADDRESS (msym); | |
694 | if (main_program_name_addr == 0) | |
323e0a4a | 695 | error (_("Invalid address for Ada main program name.")); |
96d887e8 PH |
696 | |
697 | extract_string (main_program_name_addr, main_program_name); | |
698 | return main_program_name; | |
699 | } | |
700 | ||
701 | /* The main procedure doesn't seem to be in Ada. */ | |
702 | return NULL; | |
703 | } | |
14f9c5c9 | 704 | \f |
4c4b4cd2 | 705 | /* Symbols */ |
d2e4a39e | 706 | |
4c4b4cd2 PH |
707 | /* Table of Ada operators and their GNAT-encoded names. Last entry is pair |
708 | of NULLs. */ | |
14f9c5c9 | 709 | |
d2e4a39e AS |
710 | const struct ada_opname_map ada_opname_table[] = { |
711 | {"Oadd", "\"+\"", BINOP_ADD}, | |
712 | {"Osubtract", "\"-\"", BINOP_SUB}, | |
713 | {"Omultiply", "\"*\"", BINOP_MUL}, | |
714 | {"Odivide", "\"/\"", BINOP_DIV}, | |
715 | {"Omod", "\"mod\"", BINOP_MOD}, | |
716 | {"Orem", "\"rem\"", BINOP_REM}, | |
717 | {"Oexpon", "\"**\"", BINOP_EXP}, | |
718 | {"Olt", "\"<\"", BINOP_LESS}, | |
719 | {"Ole", "\"<=\"", BINOP_LEQ}, | |
720 | {"Ogt", "\">\"", BINOP_GTR}, | |
721 | {"Oge", "\">=\"", BINOP_GEQ}, | |
722 | {"Oeq", "\"=\"", BINOP_EQUAL}, | |
723 | {"One", "\"/=\"", BINOP_NOTEQUAL}, | |
724 | {"Oand", "\"and\"", BINOP_BITWISE_AND}, | |
725 | {"Oor", "\"or\"", BINOP_BITWISE_IOR}, | |
726 | {"Oxor", "\"xor\"", BINOP_BITWISE_XOR}, | |
727 | {"Oconcat", "\"&\"", BINOP_CONCAT}, | |
728 | {"Oabs", "\"abs\"", UNOP_ABS}, | |
729 | {"Onot", "\"not\"", UNOP_LOGICAL_NOT}, | |
730 | {"Oadd", "\"+\"", UNOP_PLUS}, | |
731 | {"Osubtract", "\"-\"", UNOP_NEG}, | |
732 | {NULL, NULL} | |
14f9c5c9 AS |
733 | }; |
734 | ||
4c4b4cd2 PH |
735 | /* Return non-zero if STR should be suppressed in info listings. */ |
736 | ||
14f9c5c9 | 737 | static int |
d2e4a39e | 738 | is_suppressed_name (const char *str) |
14f9c5c9 | 739 | { |
4c4b4cd2 | 740 | if (strncmp (str, "_ada_", 5) == 0) |
14f9c5c9 AS |
741 | str += 5; |
742 | if (str[0] == '_' || str[0] == '\000') | |
743 | return 1; | |
744 | else | |
745 | { | |
d2e4a39e AS |
746 | const char *p; |
747 | const char *suffix = strstr (str, "___"); | |
14f9c5c9 | 748 | if (suffix != NULL && suffix[3] != 'X') |
4c4b4cd2 | 749 | return 1; |
14f9c5c9 | 750 | if (suffix == NULL) |
4c4b4cd2 | 751 | suffix = str + strlen (str); |
d2e4a39e | 752 | for (p = suffix - 1; p != str; p -= 1) |
4c4b4cd2 PH |
753 | if (isupper (*p)) |
754 | { | |
755 | int i; | |
756 | if (p[0] == 'X' && p[-1] != '_') | |
757 | goto OK; | |
758 | if (*p != 'O') | |
759 | return 1; | |
760 | for (i = 0; ada_opname_table[i].encoded != NULL; i += 1) | |
761 | if (strncmp (ada_opname_table[i].encoded, p, | |
762 | strlen (ada_opname_table[i].encoded)) == 0) | |
763 | goto OK; | |
764 | return 1; | |
765 | OK:; | |
766 | } | |
14f9c5c9 AS |
767 | return 0; |
768 | } | |
769 | } | |
770 | ||
4c4b4cd2 PH |
771 | /* The "encoded" form of DECODED, according to GNAT conventions. |
772 | The result is valid until the next call to ada_encode. */ | |
773 | ||
14f9c5c9 | 774 | char * |
4c4b4cd2 | 775 | ada_encode (const char *decoded) |
14f9c5c9 | 776 | { |
4c4b4cd2 PH |
777 | static char *encoding_buffer = NULL; |
778 | static size_t encoding_buffer_size = 0; | |
d2e4a39e | 779 | const char *p; |
14f9c5c9 | 780 | int k; |
d2e4a39e | 781 | |
4c4b4cd2 | 782 | if (decoded == NULL) |
14f9c5c9 AS |
783 | return NULL; |
784 | ||
4c4b4cd2 PH |
785 | GROW_VECT (encoding_buffer, encoding_buffer_size, |
786 | 2 * strlen (decoded) + 10); | |
14f9c5c9 AS |
787 | |
788 | k = 0; | |
4c4b4cd2 | 789 | for (p = decoded; *p != '\0'; p += 1) |
14f9c5c9 | 790 | { |
cdc7bb92 | 791 | if (*p == '.') |
4c4b4cd2 PH |
792 | { |
793 | encoding_buffer[k] = encoding_buffer[k + 1] = '_'; | |
794 | k += 2; | |
795 | } | |
14f9c5c9 | 796 | else if (*p == '"') |
4c4b4cd2 PH |
797 | { |
798 | const struct ada_opname_map *mapping; | |
799 | ||
800 | for (mapping = ada_opname_table; | |
1265e4aa JB |
801 | mapping->encoded != NULL |
802 | && strncmp (mapping->decoded, p, | |
803 | strlen (mapping->decoded)) != 0; mapping += 1) | |
4c4b4cd2 PH |
804 | ; |
805 | if (mapping->encoded == NULL) | |
323e0a4a | 806 | error (_("invalid Ada operator name: %s"), p); |
4c4b4cd2 PH |
807 | strcpy (encoding_buffer + k, mapping->encoded); |
808 | k += strlen (mapping->encoded); | |
809 | break; | |
810 | } | |
d2e4a39e | 811 | else |
4c4b4cd2 PH |
812 | { |
813 | encoding_buffer[k] = *p; | |
814 | k += 1; | |
815 | } | |
14f9c5c9 AS |
816 | } |
817 | ||
4c4b4cd2 PH |
818 | encoding_buffer[k] = '\0'; |
819 | return encoding_buffer; | |
14f9c5c9 AS |
820 | } |
821 | ||
822 | /* Return NAME folded to lower case, or, if surrounded by single | |
4c4b4cd2 PH |
823 | quotes, unfolded, but with the quotes stripped away. Result good |
824 | to next call. */ | |
825 | ||
d2e4a39e AS |
826 | char * |
827 | ada_fold_name (const char *name) | |
14f9c5c9 | 828 | { |
d2e4a39e | 829 | static char *fold_buffer = NULL; |
14f9c5c9 AS |
830 | static size_t fold_buffer_size = 0; |
831 | ||
832 | int len = strlen (name); | |
d2e4a39e | 833 | GROW_VECT (fold_buffer, fold_buffer_size, len + 1); |
14f9c5c9 AS |
834 | |
835 | if (name[0] == '\'') | |
836 | { | |
d2e4a39e AS |
837 | strncpy (fold_buffer, name + 1, len - 2); |
838 | fold_buffer[len - 2] = '\000'; | |
14f9c5c9 AS |
839 | } |
840 | else | |
841 | { | |
842 | int i; | |
843 | for (i = 0; i <= len; i += 1) | |
4c4b4cd2 | 844 | fold_buffer[i] = tolower (name[i]); |
14f9c5c9 AS |
845 | } |
846 | ||
847 | return fold_buffer; | |
848 | } | |
849 | ||
529cad9c PH |
850 | /* Return nonzero if C is either a digit or a lowercase alphabet character. */ |
851 | ||
852 | static int | |
853 | is_lower_alphanum (const char c) | |
854 | { | |
855 | return (isdigit (c) || (isalpha (c) && islower (c))); | |
856 | } | |
857 | ||
29480c32 JB |
858 | /* Remove either of these suffixes: |
859 | . .{DIGIT}+ | |
860 | . ${DIGIT}+ | |
861 | . ___{DIGIT}+ | |
862 | . __{DIGIT}+. | |
863 | These are suffixes introduced by the compiler for entities such as | |
864 | nested subprogram for instance, in order to avoid name clashes. | |
865 | They do not serve any purpose for the debugger. */ | |
866 | ||
867 | static void | |
868 | ada_remove_trailing_digits (const char *encoded, int *len) | |
869 | { | |
870 | if (*len > 1 && isdigit (encoded[*len - 1])) | |
871 | { | |
872 | int i = *len - 2; | |
873 | while (i > 0 && isdigit (encoded[i])) | |
874 | i--; | |
875 | if (i >= 0 && encoded[i] == '.') | |
876 | *len = i; | |
877 | else if (i >= 0 && encoded[i] == '$') | |
878 | *len = i; | |
879 | else if (i >= 2 && strncmp (encoded + i - 2, "___", 3) == 0) | |
880 | *len = i - 2; | |
881 | else if (i >= 1 && strncmp (encoded + i - 1, "__", 2) == 0) | |
882 | *len = i - 1; | |
883 | } | |
884 | } | |
885 | ||
886 | /* Remove the suffix introduced by the compiler for protected object | |
887 | subprograms. */ | |
888 | ||
889 | static void | |
890 | ada_remove_po_subprogram_suffix (const char *encoded, int *len) | |
891 | { | |
892 | /* Remove trailing N. */ | |
893 | ||
894 | /* Protected entry subprograms are broken into two | |
895 | separate subprograms: The first one is unprotected, and has | |
896 | a 'N' suffix; the second is the protected version, and has | |
897 | the 'P' suffix. The second calls the first one after handling | |
898 | the protection. Since the P subprograms are internally generated, | |
899 | we leave these names undecoded, giving the user a clue that this | |
900 | entity is internal. */ | |
901 | ||
902 | if (*len > 1 | |
903 | && encoded[*len - 1] == 'N' | |
904 | && (isdigit (encoded[*len - 2]) || islower (encoded[*len - 2]))) | |
905 | *len = *len - 1; | |
906 | } | |
907 | ||
908 | /* If ENCODED follows the GNAT entity encoding conventions, then return | |
909 | the decoded form of ENCODED. Otherwise, return "<%s>" where "%s" is | |
910 | replaced by ENCODED. | |
14f9c5c9 | 911 | |
4c4b4cd2 | 912 | The resulting string is valid until the next call of ada_decode. |
29480c32 | 913 | If the string is unchanged by decoding, the original string pointer |
4c4b4cd2 PH |
914 | is returned. */ |
915 | ||
916 | const char * | |
917 | ada_decode (const char *encoded) | |
14f9c5c9 AS |
918 | { |
919 | int i, j; | |
920 | int len0; | |
d2e4a39e | 921 | const char *p; |
4c4b4cd2 | 922 | char *decoded; |
14f9c5c9 | 923 | int at_start_name; |
4c4b4cd2 PH |
924 | static char *decoding_buffer = NULL; |
925 | static size_t decoding_buffer_size = 0; | |
d2e4a39e | 926 | |
29480c32 JB |
927 | /* The name of the Ada main procedure starts with "_ada_". |
928 | This prefix is not part of the decoded name, so skip this part | |
929 | if we see this prefix. */ | |
4c4b4cd2 PH |
930 | if (strncmp (encoded, "_ada_", 5) == 0) |
931 | encoded += 5; | |
14f9c5c9 | 932 | |
29480c32 JB |
933 | /* If the name starts with '_', then it is not a properly encoded |
934 | name, so do not attempt to decode it. Similarly, if the name | |
935 | starts with '<', the name should not be decoded. */ | |
4c4b4cd2 | 936 | if (encoded[0] == '_' || encoded[0] == '<') |
14f9c5c9 AS |
937 | goto Suppress; |
938 | ||
4c4b4cd2 | 939 | len0 = strlen (encoded); |
4c4b4cd2 | 940 | |
29480c32 JB |
941 | ada_remove_trailing_digits (encoded, &len0); |
942 | ada_remove_po_subprogram_suffix (encoded, &len0); | |
529cad9c | 943 | |
4c4b4cd2 PH |
944 | /* Remove the ___X.* suffix if present. Do not forget to verify that |
945 | the suffix is located before the current "end" of ENCODED. We want | |
946 | to avoid re-matching parts of ENCODED that have previously been | |
947 | marked as discarded (by decrementing LEN0). */ | |
948 | p = strstr (encoded, "___"); | |
949 | if (p != NULL && p - encoded < len0 - 3) | |
14f9c5c9 AS |
950 | { |
951 | if (p[3] == 'X') | |
4c4b4cd2 | 952 | len0 = p - encoded; |
14f9c5c9 | 953 | else |
4c4b4cd2 | 954 | goto Suppress; |
14f9c5c9 | 955 | } |
4c4b4cd2 | 956 | |
29480c32 JB |
957 | /* Remove any trailing TKB suffix. It tells us that this symbol |
958 | is for the body of a task, but that information does not actually | |
959 | appear in the decoded name. */ | |
960 | ||
4c4b4cd2 | 961 | if (len0 > 3 && strncmp (encoded + len0 - 3, "TKB", 3) == 0) |
14f9c5c9 | 962 | len0 -= 3; |
76a01679 | 963 | |
29480c32 JB |
964 | /* Remove trailing "B" suffixes. */ |
965 | /* FIXME: brobecker/2006-04-19: Not sure what this are used for... */ | |
966 | ||
4c4b4cd2 | 967 | if (len0 > 1 && strncmp (encoded + len0 - 1, "B", 1) == 0) |
14f9c5c9 AS |
968 | len0 -= 1; |
969 | ||
4c4b4cd2 | 970 | /* Make decoded big enough for possible expansion by operator name. */ |
29480c32 | 971 | |
4c4b4cd2 PH |
972 | GROW_VECT (decoding_buffer, decoding_buffer_size, 2 * len0 + 1); |
973 | decoded = decoding_buffer; | |
14f9c5c9 | 974 | |
29480c32 JB |
975 | /* Remove trailing __{digit}+ or trailing ${digit}+. */ |
976 | ||
4c4b4cd2 | 977 | if (len0 > 1 && isdigit (encoded[len0 - 1])) |
d2e4a39e | 978 | { |
4c4b4cd2 PH |
979 | i = len0 - 2; |
980 | while ((i >= 0 && isdigit (encoded[i])) | |
981 | || (i >= 1 && encoded[i] == '_' && isdigit (encoded[i - 1]))) | |
982 | i -= 1; | |
983 | if (i > 1 && encoded[i] == '_' && encoded[i - 1] == '_') | |
984 | len0 = i - 1; | |
985 | else if (encoded[i] == '$') | |
986 | len0 = i; | |
d2e4a39e | 987 | } |
14f9c5c9 | 988 | |
29480c32 JB |
989 | /* The first few characters that are not alphabetic are not part |
990 | of any encoding we use, so we can copy them over verbatim. */ | |
991 | ||
4c4b4cd2 PH |
992 | for (i = 0, j = 0; i < len0 && !isalpha (encoded[i]); i += 1, j += 1) |
993 | decoded[j] = encoded[i]; | |
14f9c5c9 AS |
994 | |
995 | at_start_name = 1; | |
996 | while (i < len0) | |
997 | { | |
29480c32 | 998 | /* Is this a symbol function? */ |
4c4b4cd2 PH |
999 | if (at_start_name && encoded[i] == 'O') |
1000 | { | |
1001 | int k; | |
1002 | for (k = 0; ada_opname_table[k].encoded != NULL; k += 1) | |
1003 | { | |
1004 | int op_len = strlen (ada_opname_table[k].encoded); | |
06d5cf63 JB |
1005 | if ((strncmp (ada_opname_table[k].encoded + 1, encoded + i + 1, |
1006 | op_len - 1) == 0) | |
1007 | && !isalnum (encoded[i + op_len])) | |
4c4b4cd2 PH |
1008 | { |
1009 | strcpy (decoded + j, ada_opname_table[k].decoded); | |
1010 | at_start_name = 0; | |
1011 | i += op_len; | |
1012 | j += strlen (ada_opname_table[k].decoded); | |
1013 | break; | |
1014 | } | |
1015 | } | |
1016 | if (ada_opname_table[k].encoded != NULL) | |
1017 | continue; | |
1018 | } | |
14f9c5c9 AS |
1019 | at_start_name = 0; |
1020 | ||
529cad9c PH |
1021 | /* Replace "TK__" with "__", which will eventually be translated |
1022 | into "." (just below). */ | |
1023 | ||
4c4b4cd2 PH |
1024 | if (i < len0 - 4 && strncmp (encoded + i, "TK__", 4) == 0) |
1025 | i += 2; | |
529cad9c | 1026 | |
29480c32 JB |
1027 | /* Replace "__B_{DIGITS}+__" sequences by "__", which will eventually |
1028 | be translated into "." (just below). These are internal names | |
1029 | generated for anonymous blocks inside which our symbol is nested. */ | |
1030 | ||
1031 | if (len0 - i > 5 && encoded [i] == '_' && encoded [i+1] == '_' | |
1032 | && encoded [i+2] == 'B' && encoded [i+3] == '_' | |
1033 | && isdigit (encoded [i+4])) | |
1034 | { | |
1035 | int k = i + 5; | |
1036 | ||
1037 | while (k < len0 && isdigit (encoded[k])) | |
1038 | k++; /* Skip any extra digit. */ | |
1039 | ||
1040 | /* Double-check that the "__B_{DIGITS}+" sequence we found | |
1041 | is indeed followed by "__". */ | |
1042 | if (len0 - k > 2 && encoded [k] == '_' && encoded [k+1] == '_') | |
1043 | i = k; | |
1044 | } | |
1045 | ||
529cad9c PH |
1046 | /* Remove _E{DIGITS}+[sb] */ |
1047 | ||
1048 | /* Just as for protected object subprograms, there are 2 categories | |
1049 | of subprograms created by the compiler for each entry. The first | |
1050 | one implements the actual entry code, and has a suffix following | |
1051 | the convention above; the second one implements the barrier and | |
1052 | uses the same convention as above, except that the 'E' is replaced | |
1053 | by a 'B'. | |
1054 | ||
1055 | Just as above, we do not decode the name of barrier functions | |
1056 | to give the user a clue that the code he is debugging has been | |
1057 | internally generated. */ | |
1058 | ||
1059 | if (len0 - i > 3 && encoded [i] == '_' && encoded[i+1] == 'E' | |
1060 | && isdigit (encoded[i+2])) | |
1061 | { | |
1062 | int k = i + 3; | |
1063 | ||
1064 | while (k < len0 && isdigit (encoded[k])) | |
1065 | k++; | |
1066 | ||
1067 | if (k < len0 | |
1068 | && (encoded[k] == 'b' || encoded[k] == 's')) | |
1069 | { | |
1070 | k++; | |
1071 | /* Just as an extra precaution, make sure that if this | |
1072 | suffix is followed by anything else, it is a '_'. | |
1073 | Otherwise, we matched this sequence by accident. */ | |
1074 | if (k == len0 | |
1075 | || (k < len0 && encoded[k] == '_')) | |
1076 | i = k; | |
1077 | } | |
1078 | } | |
1079 | ||
1080 | /* Remove trailing "N" in [a-z0-9]+N__. The N is added by | |
1081 | the GNAT front-end in protected object subprograms. */ | |
1082 | ||
1083 | if (i < len0 + 3 | |
1084 | && encoded[i] == 'N' && encoded[i+1] == '_' && encoded[i+2] == '_') | |
1085 | { | |
1086 | /* Backtrack a bit up until we reach either the begining of | |
1087 | the encoded name, or "__". Make sure that we only find | |
1088 | digits or lowercase characters. */ | |
1089 | const char *ptr = encoded + i - 1; | |
1090 | ||
1091 | while (ptr >= encoded && is_lower_alphanum (ptr[0])) | |
1092 | ptr--; | |
1093 | if (ptr < encoded | |
1094 | || (ptr > encoded && ptr[0] == '_' && ptr[-1] == '_')) | |
1095 | i++; | |
1096 | } | |
1097 | ||
4c4b4cd2 PH |
1098 | if (encoded[i] == 'X' && i != 0 && isalnum (encoded[i - 1])) |
1099 | { | |
29480c32 JB |
1100 | /* This is a X[bn]* sequence not separated from the previous |
1101 | part of the name with a non-alpha-numeric character (in other | |
1102 | words, immediately following an alpha-numeric character), then | |
1103 | verify that it is placed at the end of the encoded name. If | |
1104 | not, then the encoding is not valid and we should abort the | |
1105 | decoding. Otherwise, just skip it, it is used in body-nested | |
1106 | package names. */ | |
4c4b4cd2 PH |
1107 | do |
1108 | i += 1; | |
1109 | while (i < len0 && (encoded[i] == 'b' || encoded[i] == 'n')); | |
1110 | if (i < len0) | |
1111 | goto Suppress; | |
1112 | } | |
cdc7bb92 | 1113 | else if (i < len0 - 2 && encoded[i] == '_' && encoded[i + 1] == '_') |
4c4b4cd2 | 1114 | { |
29480c32 | 1115 | /* Replace '__' by '.'. */ |
4c4b4cd2 PH |
1116 | decoded[j] = '.'; |
1117 | at_start_name = 1; | |
1118 | i += 2; | |
1119 | j += 1; | |
1120 | } | |
14f9c5c9 | 1121 | else |
4c4b4cd2 | 1122 | { |
29480c32 JB |
1123 | /* It's a character part of the decoded name, so just copy it |
1124 | over. */ | |
4c4b4cd2 PH |
1125 | decoded[j] = encoded[i]; |
1126 | i += 1; | |
1127 | j += 1; | |
1128 | } | |
14f9c5c9 | 1129 | } |
4c4b4cd2 | 1130 | decoded[j] = '\000'; |
14f9c5c9 | 1131 | |
29480c32 JB |
1132 | /* Decoded names should never contain any uppercase character. |
1133 | Double-check this, and abort the decoding if we find one. */ | |
1134 | ||
4c4b4cd2 PH |
1135 | for (i = 0; decoded[i] != '\0'; i += 1) |
1136 | if (isupper (decoded[i]) || decoded[i] == ' ') | |
14f9c5c9 AS |
1137 | goto Suppress; |
1138 | ||
4c4b4cd2 PH |
1139 | if (strcmp (decoded, encoded) == 0) |
1140 | return encoded; | |
1141 | else | |
1142 | return decoded; | |
14f9c5c9 AS |
1143 | |
1144 | Suppress: | |
4c4b4cd2 PH |
1145 | GROW_VECT (decoding_buffer, decoding_buffer_size, strlen (encoded) + 3); |
1146 | decoded = decoding_buffer; | |
1147 | if (encoded[0] == '<') | |
1148 | strcpy (decoded, encoded); | |
14f9c5c9 | 1149 | else |
4c4b4cd2 PH |
1150 | sprintf (decoded, "<%s>", encoded); |
1151 | return decoded; | |
1152 | ||
1153 | } | |
1154 | ||
1155 | /* Table for keeping permanent unique copies of decoded names. Once | |
1156 | allocated, names in this table are never released. While this is a | |
1157 | storage leak, it should not be significant unless there are massive | |
1158 | changes in the set of decoded names in successive versions of a | |
1159 | symbol table loaded during a single session. */ | |
1160 | static struct htab *decoded_names_store; | |
1161 | ||
1162 | /* Returns the decoded name of GSYMBOL, as for ada_decode, caching it | |
1163 | in the language-specific part of GSYMBOL, if it has not been | |
1164 | previously computed. Tries to save the decoded name in the same | |
1165 | obstack as GSYMBOL, if possible, and otherwise on the heap (so that, | |
1166 | in any case, the decoded symbol has a lifetime at least that of | |
1167 | GSYMBOL). | |
1168 | The GSYMBOL parameter is "mutable" in the C++ sense: logically | |
1169 | const, but nevertheless modified to a semantically equivalent form | |
1170 | when a decoded name is cached in it. | |
76a01679 | 1171 | */ |
4c4b4cd2 | 1172 | |
76a01679 JB |
1173 | char * |
1174 | ada_decode_symbol (const struct general_symbol_info *gsymbol) | |
4c4b4cd2 | 1175 | { |
76a01679 | 1176 | char **resultp = |
4c4b4cd2 PH |
1177 | (char **) &gsymbol->language_specific.cplus_specific.demangled_name; |
1178 | if (*resultp == NULL) | |
1179 | { | |
1180 | const char *decoded = ada_decode (gsymbol->name); | |
714835d5 | 1181 | if (gsymbol->obj_section != NULL) |
76a01679 | 1182 | { |
714835d5 UW |
1183 | struct objfile *objf = gsymbol->obj_section->objfile; |
1184 | *resultp = obsavestring (decoded, strlen (decoded), | |
1185 | &objf->objfile_obstack); | |
76a01679 | 1186 | } |
4c4b4cd2 | 1187 | /* Sometimes, we can't find a corresponding objfile, in which |
76a01679 JB |
1188 | case, we put the result on the heap. Since we only decode |
1189 | when needed, we hope this usually does not cause a | |
1190 | significant memory leak (FIXME). */ | |
4c4b4cd2 | 1191 | if (*resultp == NULL) |
76a01679 JB |
1192 | { |
1193 | char **slot = (char **) htab_find_slot (decoded_names_store, | |
1194 | decoded, INSERT); | |
1195 | if (*slot == NULL) | |
1196 | *slot = xstrdup (decoded); | |
1197 | *resultp = *slot; | |
1198 | } | |
4c4b4cd2 | 1199 | } |
14f9c5c9 | 1200 | |
4c4b4cd2 PH |
1201 | return *resultp; |
1202 | } | |
76a01679 JB |
1203 | |
1204 | char * | |
1205 | ada_la_decode (const char *encoded, int options) | |
4c4b4cd2 PH |
1206 | { |
1207 | return xstrdup (ada_decode (encoded)); | |
14f9c5c9 AS |
1208 | } |
1209 | ||
1210 | /* Returns non-zero iff SYM_NAME matches NAME, ignoring any trailing | |
4c4b4cd2 PH |
1211 | suffixes that encode debugging information or leading _ada_ on |
1212 | SYM_NAME (see is_name_suffix commentary for the debugging | |
1213 | information that is ignored). If WILD, then NAME need only match a | |
1214 | suffix of SYM_NAME minus the same suffixes. Also returns 0 if | |
1215 | either argument is NULL. */ | |
14f9c5c9 AS |
1216 | |
1217 | int | |
d2e4a39e | 1218 | ada_match_name (const char *sym_name, const char *name, int wild) |
14f9c5c9 AS |
1219 | { |
1220 | if (sym_name == NULL || name == NULL) | |
1221 | return 0; | |
1222 | else if (wild) | |
1223 | return wild_match (name, strlen (name), sym_name); | |
d2e4a39e AS |
1224 | else |
1225 | { | |
1226 | int len_name = strlen (name); | |
4c4b4cd2 PH |
1227 | return (strncmp (sym_name, name, len_name) == 0 |
1228 | && is_name_suffix (sym_name + len_name)) | |
1229 | || (strncmp (sym_name, "_ada_", 5) == 0 | |
1230 | && strncmp (sym_name + 5, name, len_name) == 0 | |
1231 | && is_name_suffix (sym_name + len_name + 5)); | |
d2e4a39e | 1232 | } |
14f9c5c9 AS |
1233 | } |
1234 | ||
4c4b4cd2 PH |
1235 | /* True (non-zero) iff, in Ada mode, the symbol SYM should be |
1236 | suppressed in info listings. */ | |
14f9c5c9 AS |
1237 | |
1238 | int | |
ebf56fd3 | 1239 | ada_suppress_symbol_printing (struct symbol *sym) |
14f9c5c9 | 1240 | { |
176620f1 | 1241 | if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN) |
14f9c5c9 | 1242 | return 1; |
d2e4a39e | 1243 | else |
4c4b4cd2 | 1244 | return is_suppressed_name (SYMBOL_LINKAGE_NAME (sym)); |
14f9c5c9 | 1245 | } |
14f9c5c9 | 1246 | \f |
d2e4a39e | 1247 | |
4c4b4cd2 | 1248 | /* Arrays */ |
14f9c5c9 | 1249 | |
4c4b4cd2 | 1250 | /* Names of MAX_ADA_DIMENS bounds in P_BOUNDS fields of array descriptors. */ |
14f9c5c9 | 1251 | |
d2e4a39e AS |
1252 | static char *bound_name[] = { |
1253 | "LB0", "UB0", "LB1", "UB1", "LB2", "UB2", "LB3", "UB3", | |
14f9c5c9 AS |
1254 | "LB4", "UB4", "LB5", "UB5", "LB6", "UB6", "LB7", "UB7" |
1255 | }; | |
1256 | ||
1257 | /* Maximum number of array dimensions we are prepared to handle. */ | |
1258 | ||
4c4b4cd2 | 1259 | #define MAX_ADA_DIMENS (sizeof(bound_name) / (2*sizeof(char *))) |
14f9c5c9 | 1260 | |
4c4b4cd2 | 1261 | /* Like modify_field, but allows bitpos > wordlength. */ |
14f9c5c9 AS |
1262 | |
1263 | static void | |
ebf56fd3 | 1264 | modify_general_field (char *addr, LONGEST fieldval, int bitpos, int bitsize) |
14f9c5c9 | 1265 | { |
4c4b4cd2 | 1266 | modify_field (addr + bitpos / 8, fieldval, bitpos % 8, bitsize); |
14f9c5c9 AS |
1267 | } |
1268 | ||
1269 | ||
4c4b4cd2 PH |
1270 | /* The desc_* routines return primitive portions of array descriptors |
1271 | (fat pointers). */ | |
14f9c5c9 AS |
1272 | |
1273 | /* The descriptor or array type, if any, indicated by TYPE; removes | |
4c4b4cd2 PH |
1274 | level of indirection, if needed. */ |
1275 | ||
d2e4a39e AS |
1276 | static struct type * |
1277 | desc_base_type (struct type *type) | |
14f9c5c9 AS |
1278 | { |
1279 | if (type == NULL) | |
1280 | return NULL; | |
61ee279c | 1281 | type = ada_check_typedef (type); |
1265e4aa JB |
1282 | if (type != NULL |
1283 | && (TYPE_CODE (type) == TYPE_CODE_PTR | |
1284 | || TYPE_CODE (type) == TYPE_CODE_REF)) | |
61ee279c | 1285 | return ada_check_typedef (TYPE_TARGET_TYPE (type)); |
14f9c5c9 AS |
1286 | else |
1287 | return type; | |
1288 | } | |
1289 | ||
4c4b4cd2 PH |
1290 | /* True iff TYPE indicates a "thin" array pointer type. */ |
1291 | ||
14f9c5c9 | 1292 | static int |
d2e4a39e | 1293 | is_thin_pntr (struct type *type) |
14f9c5c9 | 1294 | { |
d2e4a39e | 1295 | return |
14f9c5c9 AS |
1296 | is_suffix (ada_type_name (desc_base_type (type)), "___XUT") |
1297 | || is_suffix (ada_type_name (desc_base_type (type)), "___XUT___XVE"); | |
1298 | } | |
1299 | ||
4c4b4cd2 PH |
1300 | /* The descriptor type for thin pointer type TYPE. */ |
1301 | ||
d2e4a39e AS |
1302 | static struct type * |
1303 | thin_descriptor_type (struct type *type) | |
14f9c5c9 | 1304 | { |
d2e4a39e | 1305 | struct type *base_type = desc_base_type (type); |
14f9c5c9 AS |
1306 | if (base_type == NULL) |
1307 | return NULL; | |
1308 | if (is_suffix (ada_type_name (base_type), "___XVE")) | |
1309 | return base_type; | |
d2e4a39e | 1310 | else |
14f9c5c9 | 1311 | { |
d2e4a39e | 1312 | struct type *alt_type = ada_find_parallel_type (base_type, "___XVE"); |
14f9c5c9 | 1313 | if (alt_type == NULL) |
4c4b4cd2 | 1314 | return base_type; |
14f9c5c9 | 1315 | else |
4c4b4cd2 | 1316 | return alt_type; |
14f9c5c9 AS |
1317 | } |
1318 | } | |
1319 | ||
4c4b4cd2 PH |
1320 | /* A pointer to the array data for thin-pointer value VAL. */ |
1321 | ||
d2e4a39e AS |
1322 | static struct value * |
1323 | thin_data_pntr (struct value *val) | |
14f9c5c9 | 1324 | { |
df407dfe | 1325 | struct type *type = value_type (val); |
14f9c5c9 | 1326 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
d2e4a39e | 1327 | return value_cast (desc_data_type (thin_descriptor_type (type)), |
4c4b4cd2 | 1328 | value_copy (val)); |
d2e4a39e | 1329 | else |
14f9c5c9 | 1330 | return value_from_longest (desc_data_type (thin_descriptor_type (type)), |
df407dfe | 1331 | VALUE_ADDRESS (val) + value_offset (val)); |
14f9c5c9 AS |
1332 | } |
1333 | ||
4c4b4cd2 PH |
1334 | /* True iff TYPE indicates a "thick" array pointer type. */ |
1335 | ||
14f9c5c9 | 1336 | static int |
d2e4a39e | 1337 | is_thick_pntr (struct type *type) |
14f9c5c9 AS |
1338 | { |
1339 | type = desc_base_type (type); | |
1340 | return (type != NULL && TYPE_CODE (type) == TYPE_CODE_STRUCT | |
4c4b4cd2 | 1341 | && lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL); |
14f9c5c9 AS |
1342 | } |
1343 | ||
4c4b4cd2 PH |
1344 | /* If TYPE is the type of an array descriptor (fat or thin pointer) or a |
1345 | pointer to one, the type of its bounds data; otherwise, NULL. */ | |
76a01679 | 1346 | |
d2e4a39e AS |
1347 | static struct type * |
1348 | desc_bounds_type (struct type *type) | |
14f9c5c9 | 1349 | { |
d2e4a39e | 1350 | struct type *r; |
14f9c5c9 AS |
1351 | |
1352 | type = desc_base_type (type); | |
1353 | ||
1354 | if (type == NULL) | |
1355 | return NULL; | |
1356 | else if (is_thin_pntr (type)) | |
1357 | { | |
1358 | type = thin_descriptor_type (type); | |
1359 | if (type == NULL) | |
4c4b4cd2 | 1360 | return NULL; |
14f9c5c9 AS |
1361 | r = lookup_struct_elt_type (type, "BOUNDS", 1); |
1362 | if (r != NULL) | |
61ee279c | 1363 | return ada_check_typedef (r); |
14f9c5c9 AS |
1364 | } |
1365 | else if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
1366 | { | |
1367 | r = lookup_struct_elt_type (type, "P_BOUNDS", 1); | |
1368 | if (r != NULL) | |
61ee279c | 1369 | return ada_check_typedef (TYPE_TARGET_TYPE (ada_check_typedef (r))); |
14f9c5c9 AS |
1370 | } |
1371 | return NULL; | |
1372 | } | |
1373 | ||
1374 | /* If ARR is an array descriptor (fat or thin pointer), or pointer to | |
4c4b4cd2 PH |
1375 | one, a pointer to its bounds data. Otherwise NULL. */ |
1376 | ||
d2e4a39e AS |
1377 | static struct value * |
1378 | desc_bounds (struct value *arr) | |
14f9c5c9 | 1379 | { |
df407dfe | 1380 | struct type *type = ada_check_typedef (value_type (arr)); |
d2e4a39e | 1381 | if (is_thin_pntr (type)) |
14f9c5c9 | 1382 | { |
d2e4a39e | 1383 | struct type *bounds_type = |
4c4b4cd2 | 1384 | desc_bounds_type (thin_descriptor_type (type)); |
14f9c5c9 AS |
1385 | LONGEST addr; |
1386 | ||
4cdfadb1 | 1387 | if (bounds_type == NULL) |
323e0a4a | 1388 | error (_("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1389 | |
1390 | /* NOTE: The following calculation is not really kosher, but | |
d2e4a39e | 1391 | since desc_type is an XVE-encoded type (and shouldn't be), |
4c4b4cd2 | 1392 | the correct calculation is a real pain. FIXME (and fix GCC). */ |
14f9c5c9 | 1393 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
4c4b4cd2 | 1394 | addr = value_as_long (arr); |
d2e4a39e | 1395 | else |
df407dfe | 1396 | addr = VALUE_ADDRESS (arr) + value_offset (arr); |
14f9c5c9 | 1397 | |
d2e4a39e | 1398 | return |
4c4b4cd2 PH |
1399 | value_from_longest (lookup_pointer_type (bounds_type), |
1400 | addr - TYPE_LENGTH (bounds_type)); | |
14f9c5c9 AS |
1401 | } |
1402 | ||
1403 | else if (is_thick_pntr (type)) | |
d2e4a39e | 1404 | return value_struct_elt (&arr, NULL, "P_BOUNDS", NULL, |
323e0a4a | 1405 | _("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1406 | else |
1407 | return NULL; | |
1408 | } | |
1409 | ||
4c4b4cd2 PH |
1410 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit |
1411 | position of the field containing the address of the bounds data. */ | |
1412 | ||
14f9c5c9 | 1413 | static int |
d2e4a39e | 1414 | fat_pntr_bounds_bitpos (struct type *type) |
14f9c5c9 AS |
1415 | { |
1416 | return TYPE_FIELD_BITPOS (desc_base_type (type), 1); | |
1417 | } | |
1418 | ||
1419 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1420 | size of the field containing the address of the bounds data. */ |
1421 | ||
14f9c5c9 | 1422 | static int |
d2e4a39e | 1423 | fat_pntr_bounds_bitsize (struct type *type) |
14f9c5c9 AS |
1424 | { |
1425 | type = desc_base_type (type); | |
1426 | ||
d2e4a39e | 1427 | if (TYPE_FIELD_BITSIZE (type, 1) > 0) |
14f9c5c9 AS |
1428 | return TYPE_FIELD_BITSIZE (type, 1); |
1429 | else | |
61ee279c | 1430 | return 8 * TYPE_LENGTH (ada_check_typedef (TYPE_FIELD_TYPE (type, 1))); |
14f9c5c9 AS |
1431 | } |
1432 | ||
4c4b4cd2 | 1433 | /* If TYPE is the type of an array descriptor (fat or thin pointer) or a |
14f9c5c9 | 1434 | pointer to one, the type of its array data (a |
4c4b4cd2 PH |
1435 | pointer-to-array-with-no-bounds type); otherwise, NULL. Use |
1436 | ada_type_of_array to get an array type with bounds data. */ | |
1437 | ||
d2e4a39e AS |
1438 | static struct type * |
1439 | desc_data_type (struct type *type) | |
14f9c5c9 AS |
1440 | { |
1441 | type = desc_base_type (type); | |
1442 | ||
4c4b4cd2 | 1443 | /* NOTE: The following is bogus; see comment in desc_bounds. */ |
14f9c5c9 | 1444 | if (is_thin_pntr (type)) |
d2e4a39e AS |
1445 | return lookup_pointer_type |
1446 | (desc_base_type (TYPE_FIELD_TYPE (thin_descriptor_type (type), 1))); | |
14f9c5c9 AS |
1447 | else if (is_thick_pntr (type)) |
1448 | return lookup_struct_elt_type (type, "P_ARRAY", 1); | |
1449 | else | |
1450 | return NULL; | |
1451 | } | |
1452 | ||
1453 | /* If ARR is an array descriptor (fat or thin pointer), a pointer to | |
1454 | its array data. */ | |
4c4b4cd2 | 1455 | |
d2e4a39e AS |
1456 | static struct value * |
1457 | desc_data (struct value *arr) | |
14f9c5c9 | 1458 | { |
df407dfe | 1459 | struct type *type = value_type (arr); |
14f9c5c9 AS |
1460 | if (is_thin_pntr (type)) |
1461 | return thin_data_pntr (arr); | |
1462 | else if (is_thick_pntr (type)) | |
d2e4a39e | 1463 | return value_struct_elt (&arr, NULL, "P_ARRAY", NULL, |
323e0a4a | 1464 | _("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1465 | else |
1466 | return NULL; | |
1467 | } | |
1468 | ||
1469 | ||
1470 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1471 | position of the field containing the address of the data. */ |
1472 | ||
14f9c5c9 | 1473 | static int |
d2e4a39e | 1474 | fat_pntr_data_bitpos (struct type *type) |
14f9c5c9 AS |
1475 | { |
1476 | return TYPE_FIELD_BITPOS (desc_base_type (type), 0); | |
1477 | } | |
1478 | ||
1479 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1480 | size of the field containing the address of the data. */ |
1481 | ||
14f9c5c9 | 1482 | static int |
d2e4a39e | 1483 | fat_pntr_data_bitsize (struct type *type) |
14f9c5c9 AS |
1484 | { |
1485 | type = desc_base_type (type); | |
1486 | ||
1487 | if (TYPE_FIELD_BITSIZE (type, 0) > 0) | |
1488 | return TYPE_FIELD_BITSIZE (type, 0); | |
d2e4a39e | 1489 | else |
14f9c5c9 AS |
1490 | return TARGET_CHAR_BIT * TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)); |
1491 | } | |
1492 | ||
4c4b4cd2 | 1493 | /* If BOUNDS is an array-bounds structure (or pointer to one), return |
14f9c5c9 | 1494 | the Ith lower bound stored in it, if WHICH is 0, and the Ith upper |
4c4b4cd2 PH |
1495 | bound, if WHICH is 1. The first bound is I=1. */ |
1496 | ||
d2e4a39e AS |
1497 | static struct value * |
1498 | desc_one_bound (struct value *bounds, int i, int which) | |
14f9c5c9 | 1499 | { |
d2e4a39e | 1500 | return value_struct_elt (&bounds, NULL, bound_name[2 * i + which - 2], NULL, |
323e0a4a | 1501 | _("Bad GNAT array descriptor bounds")); |
14f9c5c9 AS |
1502 | } |
1503 | ||
1504 | /* If BOUNDS is an array-bounds structure type, return the bit position | |
1505 | of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper | |
4c4b4cd2 PH |
1506 | bound, if WHICH is 1. The first bound is I=1. */ |
1507 | ||
14f9c5c9 | 1508 | static int |
d2e4a39e | 1509 | desc_bound_bitpos (struct type *type, int i, int which) |
14f9c5c9 | 1510 | { |
d2e4a39e | 1511 | return TYPE_FIELD_BITPOS (desc_base_type (type), 2 * i + which - 2); |
14f9c5c9 AS |
1512 | } |
1513 | ||
1514 | /* If BOUNDS is an array-bounds structure type, return the bit field size | |
1515 | of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper | |
4c4b4cd2 PH |
1516 | bound, if WHICH is 1. The first bound is I=1. */ |
1517 | ||
76a01679 | 1518 | static int |
d2e4a39e | 1519 | desc_bound_bitsize (struct type *type, int i, int which) |
14f9c5c9 AS |
1520 | { |
1521 | type = desc_base_type (type); | |
1522 | ||
d2e4a39e AS |
1523 | if (TYPE_FIELD_BITSIZE (type, 2 * i + which - 2) > 0) |
1524 | return TYPE_FIELD_BITSIZE (type, 2 * i + which - 2); | |
1525 | else | |
1526 | return 8 * TYPE_LENGTH (TYPE_FIELD_TYPE (type, 2 * i + which - 2)); | |
14f9c5c9 AS |
1527 | } |
1528 | ||
1529 | /* If TYPE is the type of an array-bounds structure, the type of its | |
4c4b4cd2 PH |
1530 | Ith bound (numbering from 1). Otherwise, NULL. */ |
1531 | ||
d2e4a39e AS |
1532 | static struct type * |
1533 | desc_index_type (struct type *type, int i) | |
14f9c5c9 AS |
1534 | { |
1535 | type = desc_base_type (type); | |
1536 | ||
1537 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
d2e4a39e AS |
1538 | return lookup_struct_elt_type (type, bound_name[2 * i - 2], 1); |
1539 | else | |
14f9c5c9 AS |
1540 | return NULL; |
1541 | } | |
1542 | ||
4c4b4cd2 PH |
1543 | /* The number of index positions in the array-bounds type TYPE. |
1544 | Return 0 if TYPE is NULL. */ | |
1545 | ||
14f9c5c9 | 1546 | static int |
d2e4a39e | 1547 | desc_arity (struct type *type) |
14f9c5c9 AS |
1548 | { |
1549 | type = desc_base_type (type); | |
1550 | ||
1551 | if (type != NULL) | |
1552 | return TYPE_NFIELDS (type) / 2; | |
1553 | return 0; | |
1554 | } | |
1555 | ||
4c4b4cd2 PH |
1556 | /* Non-zero iff TYPE is a simple array type (not a pointer to one) or |
1557 | an array descriptor type (representing an unconstrained array | |
1558 | type). */ | |
1559 | ||
76a01679 JB |
1560 | static int |
1561 | ada_is_direct_array_type (struct type *type) | |
4c4b4cd2 PH |
1562 | { |
1563 | if (type == NULL) | |
1564 | return 0; | |
61ee279c | 1565 | type = ada_check_typedef (type); |
4c4b4cd2 | 1566 | return (TYPE_CODE (type) == TYPE_CODE_ARRAY |
76a01679 | 1567 | || ada_is_array_descriptor_type (type)); |
4c4b4cd2 PH |
1568 | } |
1569 | ||
52ce6436 PH |
1570 | /* Non-zero iff TYPE represents any kind of array in Ada, or a pointer |
1571 | * to one. */ | |
1572 | ||
1573 | int | |
1574 | ada_is_array_type (struct type *type) | |
1575 | { | |
1576 | while (type != NULL | |
1577 | && (TYPE_CODE (type) == TYPE_CODE_PTR | |
1578 | || TYPE_CODE (type) == TYPE_CODE_REF)) | |
1579 | type = TYPE_TARGET_TYPE (type); | |
1580 | return ada_is_direct_array_type (type); | |
1581 | } | |
1582 | ||
4c4b4cd2 | 1583 | /* Non-zero iff TYPE is a simple array type or pointer to one. */ |
14f9c5c9 | 1584 | |
14f9c5c9 | 1585 | int |
4c4b4cd2 | 1586 | ada_is_simple_array_type (struct type *type) |
14f9c5c9 AS |
1587 | { |
1588 | if (type == NULL) | |
1589 | return 0; | |
61ee279c | 1590 | type = ada_check_typedef (type); |
14f9c5c9 | 1591 | return (TYPE_CODE (type) == TYPE_CODE_ARRAY |
4c4b4cd2 PH |
1592 | || (TYPE_CODE (type) == TYPE_CODE_PTR |
1593 | && TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_ARRAY)); | |
14f9c5c9 AS |
1594 | } |
1595 | ||
4c4b4cd2 PH |
1596 | /* Non-zero iff TYPE belongs to a GNAT array descriptor. */ |
1597 | ||
14f9c5c9 | 1598 | int |
4c4b4cd2 | 1599 | ada_is_array_descriptor_type (struct type *type) |
14f9c5c9 | 1600 | { |
d2e4a39e | 1601 | struct type *data_type = desc_data_type (type); |
14f9c5c9 AS |
1602 | |
1603 | if (type == NULL) | |
1604 | return 0; | |
61ee279c | 1605 | type = ada_check_typedef (type); |
d2e4a39e | 1606 | return |
14f9c5c9 AS |
1607 | data_type != NULL |
1608 | && ((TYPE_CODE (data_type) == TYPE_CODE_PTR | |
4c4b4cd2 PH |
1609 | && TYPE_TARGET_TYPE (data_type) != NULL |
1610 | && TYPE_CODE (TYPE_TARGET_TYPE (data_type)) == TYPE_CODE_ARRAY) | |
1265e4aa | 1611 | || TYPE_CODE (data_type) == TYPE_CODE_ARRAY) |
14f9c5c9 AS |
1612 | && desc_arity (desc_bounds_type (type)) > 0; |
1613 | } | |
1614 | ||
1615 | /* Non-zero iff type is a partially mal-formed GNAT array | |
4c4b4cd2 | 1616 | descriptor. FIXME: This is to compensate for some problems with |
14f9c5c9 | 1617 | debugging output from GNAT. Re-examine periodically to see if it |
4c4b4cd2 PH |
1618 | is still needed. */ |
1619 | ||
14f9c5c9 | 1620 | int |
ebf56fd3 | 1621 | ada_is_bogus_array_descriptor (struct type *type) |
14f9c5c9 | 1622 | { |
d2e4a39e | 1623 | return |
14f9c5c9 AS |
1624 | type != NULL |
1625 | && TYPE_CODE (type) == TYPE_CODE_STRUCT | |
1626 | && (lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL | |
4c4b4cd2 PH |
1627 | || lookup_struct_elt_type (type, "P_ARRAY", 1) != NULL) |
1628 | && !ada_is_array_descriptor_type (type); | |
14f9c5c9 AS |
1629 | } |
1630 | ||
1631 | ||
4c4b4cd2 | 1632 | /* If ARR has a record type in the form of a standard GNAT array descriptor, |
14f9c5c9 | 1633 | (fat pointer) returns the type of the array data described---specifically, |
4c4b4cd2 | 1634 | a pointer-to-array type. If BOUNDS is non-zero, the bounds data are filled |
14f9c5c9 | 1635 | in from the descriptor; otherwise, they are left unspecified. If |
4c4b4cd2 PH |
1636 | the ARR denotes a null array descriptor and BOUNDS is non-zero, |
1637 | returns NULL. The result is simply the type of ARR if ARR is not | |
14f9c5c9 | 1638 | a descriptor. */ |
d2e4a39e AS |
1639 | struct type * |
1640 | ada_type_of_array (struct value *arr, int bounds) | |
14f9c5c9 | 1641 | { |
df407dfe AC |
1642 | if (ada_is_packed_array_type (value_type (arr))) |
1643 | return decode_packed_array_type (value_type (arr)); | |
14f9c5c9 | 1644 | |
df407dfe AC |
1645 | if (!ada_is_array_descriptor_type (value_type (arr))) |
1646 | return value_type (arr); | |
d2e4a39e AS |
1647 | |
1648 | if (!bounds) | |
1649 | return | |
df407dfe | 1650 | ada_check_typedef (TYPE_TARGET_TYPE (desc_data_type (value_type (arr)))); |
14f9c5c9 AS |
1651 | else |
1652 | { | |
d2e4a39e | 1653 | struct type *elt_type; |
14f9c5c9 | 1654 | int arity; |
d2e4a39e | 1655 | struct value *descriptor; |
df407dfe | 1656 | struct objfile *objf = TYPE_OBJFILE (value_type (arr)); |
14f9c5c9 | 1657 | |
df407dfe AC |
1658 | elt_type = ada_array_element_type (value_type (arr), -1); |
1659 | arity = ada_array_arity (value_type (arr)); | |
14f9c5c9 | 1660 | |
d2e4a39e | 1661 | if (elt_type == NULL || arity == 0) |
df407dfe | 1662 | return ada_check_typedef (value_type (arr)); |
14f9c5c9 AS |
1663 | |
1664 | descriptor = desc_bounds (arr); | |
d2e4a39e | 1665 | if (value_as_long (descriptor) == 0) |
4c4b4cd2 | 1666 | return NULL; |
d2e4a39e | 1667 | while (arity > 0) |
4c4b4cd2 PH |
1668 | { |
1669 | struct type *range_type = alloc_type (objf); | |
1670 | struct type *array_type = alloc_type (objf); | |
1671 | struct value *low = desc_one_bound (descriptor, arity, 0); | |
1672 | struct value *high = desc_one_bound (descriptor, arity, 1); | |
1673 | arity -= 1; | |
1674 | ||
df407dfe | 1675 | create_range_type (range_type, value_type (low), |
529cad9c PH |
1676 | longest_to_int (value_as_long (low)), |
1677 | longest_to_int (value_as_long (high))); | |
4c4b4cd2 PH |
1678 | elt_type = create_array_type (array_type, elt_type, range_type); |
1679 | } | |
14f9c5c9 AS |
1680 | |
1681 | return lookup_pointer_type (elt_type); | |
1682 | } | |
1683 | } | |
1684 | ||
1685 | /* If ARR does not represent an array, returns ARR unchanged. | |
4c4b4cd2 PH |
1686 | Otherwise, returns either a standard GDB array with bounds set |
1687 | appropriately or, if ARR is a non-null fat pointer, a pointer to a standard | |
1688 | GDB array. Returns NULL if ARR is a null fat pointer. */ | |
1689 | ||
d2e4a39e AS |
1690 | struct value * |
1691 | ada_coerce_to_simple_array_ptr (struct value *arr) | |
14f9c5c9 | 1692 | { |
df407dfe | 1693 | if (ada_is_array_descriptor_type (value_type (arr))) |
14f9c5c9 | 1694 | { |
d2e4a39e | 1695 | struct type *arrType = ada_type_of_array (arr, 1); |
14f9c5c9 | 1696 | if (arrType == NULL) |
4c4b4cd2 | 1697 | return NULL; |
14f9c5c9 AS |
1698 | return value_cast (arrType, value_copy (desc_data (arr))); |
1699 | } | |
df407dfe | 1700 | else if (ada_is_packed_array_type (value_type (arr))) |
14f9c5c9 AS |
1701 | return decode_packed_array (arr); |
1702 | else | |
1703 | return arr; | |
1704 | } | |
1705 | ||
1706 | /* If ARR does not represent an array, returns ARR unchanged. | |
1707 | Otherwise, returns a standard GDB array describing ARR (which may | |
4c4b4cd2 PH |
1708 | be ARR itself if it already is in the proper form). */ |
1709 | ||
1710 | static struct value * | |
d2e4a39e | 1711 | ada_coerce_to_simple_array (struct value *arr) |
14f9c5c9 | 1712 | { |
df407dfe | 1713 | if (ada_is_array_descriptor_type (value_type (arr))) |
14f9c5c9 | 1714 | { |
d2e4a39e | 1715 | struct value *arrVal = ada_coerce_to_simple_array_ptr (arr); |
14f9c5c9 | 1716 | if (arrVal == NULL) |
323e0a4a | 1717 | error (_("Bounds unavailable for null array pointer.")); |
529cad9c | 1718 | check_size (TYPE_TARGET_TYPE (value_type (arrVal))); |
14f9c5c9 AS |
1719 | return value_ind (arrVal); |
1720 | } | |
df407dfe | 1721 | else if (ada_is_packed_array_type (value_type (arr))) |
14f9c5c9 | 1722 | return decode_packed_array (arr); |
d2e4a39e | 1723 | else |
14f9c5c9 AS |
1724 | return arr; |
1725 | } | |
1726 | ||
1727 | /* If TYPE represents a GNAT array type, return it translated to an | |
1728 | ordinary GDB array type (possibly with BITSIZE fields indicating | |
4c4b4cd2 PH |
1729 | packing). For other types, is the identity. */ |
1730 | ||
d2e4a39e AS |
1731 | struct type * |
1732 | ada_coerce_to_simple_array_type (struct type *type) | |
14f9c5c9 | 1733 | { |
d2e4a39e | 1734 | struct value *mark = value_mark (); |
6d84d3d8 | 1735 | struct value *dummy = value_from_longest (builtin_type_int32, 0); |
d2e4a39e | 1736 | struct type *result; |
04624583 | 1737 | deprecated_set_value_type (dummy, type); |
14f9c5c9 | 1738 | result = ada_type_of_array (dummy, 0); |
4c4b4cd2 | 1739 | value_free_to_mark (mark); |
14f9c5c9 AS |
1740 | return result; |
1741 | } | |
1742 | ||
4c4b4cd2 PH |
1743 | /* Non-zero iff TYPE represents a standard GNAT packed-array type. */ |
1744 | ||
14f9c5c9 | 1745 | int |
d2e4a39e | 1746 | ada_is_packed_array_type (struct type *type) |
14f9c5c9 AS |
1747 | { |
1748 | if (type == NULL) | |
1749 | return 0; | |
4c4b4cd2 | 1750 | type = desc_base_type (type); |
61ee279c | 1751 | type = ada_check_typedef (type); |
d2e4a39e | 1752 | return |
14f9c5c9 AS |
1753 | ada_type_name (type) != NULL |
1754 | && strstr (ada_type_name (type), "___XP") != NULL; | |
1755 | } | |
1756 | ||
1757 | /* Given that TYPE is a standard GDB array type with all bounds filled | |
1758 | in, and that the element size of its ultimate scalar constituents | |
1759 | (that is, either its elements, or, if it is an array of arrays, its | |
1760 | elements' elements, etc.) is *ELT_BITS, return an identical type, | |
1761 | but with the bit sizes of its elements (and those of any | |
1762 | constituent arrays) recorded in the BITSIZE components of its | |
4c4b4cd2 PH |
1763 | TYPE_FIELD_BITSIZE values, and with *ELT_BITS set to its total size |
1764 | in bits. */ | |
1765 | ||
d2e4a39e AS |
1766 | static struct type * |
1767 | packed_array_type (struct type *type, long *elt_bits) | |
14f9c5c9 | 1768 | { |
d2e4a39e AS |
1769 | struct type *new_elt_type; |
1770 | struct type *new_type; | |
14f9c5c9 AS |
1771 | LONGEST low_bound, high_bound; |
1772 | ||
61ee279c | 1773 | type = ada_check_typedef (type); |
14f9c5c9 AS |
1774 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY) |
1775 | return type; | |
1776 | ||
1777 | new_type = alloc_type (TYPE_OBJFILE (type)); | |
61ee279c | 1778 | new_elt_type = packed_array_type (ada_check_typedef (TYPE_TARGET_TYPE (type)), |
4c4b4cd2 | 1779 | elt_bits); |
14f9c5c9 AS |
1780 | create_array_type (new_type, new_elt_type, TYPE_FIELD_TYPE (type, 0)); |
1781 | TYPE_FIELD_BITSIZE (new_type, 0) = *elt_bits; | |
1782 | TYPE_NAME (new_type) = ada_type_name (type); | |
1783 | ||
d2e4a39e | 1784 | if (get_discrete_bounds (TYPE_FIELD_TYPE (type, 0), |
4c4b4cd2 | 1785 | &low_bound, &high_bound) < 0) |
14f9c5c9 AS |
1786 | low_bound = high_bound = 0; |
1787 | if (high_bound < low_bound) | |
1788 | *elt_bits = TYPE_LENGTH (new_type) = 0; | |
d2e4a39e | 1789 | else |
14f9c5c9 AS |
1790 | { |
1791 | *elt_bits *= (high_bound - low_bound + 1); | |
d2e4a39e | 1792 | TYPE_LENGTH (new_type) = |
4c4b4cd2 | 1793 | (*elt_bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; |
14f9c5c9 AS |
1794 | } |
1795 | ||
876cecd0 | 1796 | TYPE_FIXED_INSTANCE (new_type) = 1; |
14f9c5c9 AS |
1797 | return new_type; |
1798 | } | |
1799 | ||
4c4b4cd2 PH |
1800 | /* The array type encoded by TYPE, where ada_is_packed_array_type (TYPE). */ |
1801 | ||
d2e4a39e AS |
1802 | static struct type * |
1803 | decode_packed_array_type (struct type *type) | |
1804 | { | |
4c4b4cd2 | 1805 | struct symbol *sym; |
d2e4a39e | 1806 | struct block **blocks; |
727e3d2e JB |
1807 | char *raw_name = ada_type_name (ada_check_typedef (type)); |
1808 | char *name; | |
1809 | char *tail; | |
d2e4a39e | 1810 | struct type *shadow_type; |
14f9c5c9 AS |
1811 | long bits; |
1812 | int i, n; | |
1813 | ||
727e3d2e JB |
1814 | if (!raw_name) |
1815 | raw_name = ada_type_name (desc_base_type (type)); | |
1816 | ||
1817 | if (!raw_name) | |
1818 | return NULL; | |
1819 | ||
1820 | name = (char *) alloca (strlen (raw_name) + 1); | |
1821 | tail = strstr (raw_name, "___XP"); | |
4c4b4cd2 PH |
1822 | type = desc_base_type (type); |
1823 | ||
14f9c5c9 AS |
1824 | memcpy (name, raw_name, tail - raw_name); |
1825 | name[tail - raw_name] = '\000'; | |
1826 | ||
4c4b4cd2 PH |
1827 | sym = standard_lookup (name, get_selected_block (0), VAR_DOMAIN); |
1828 | if (sym == NULL || SYMBOL_TYPE (sym) == NULL) | |
14f9c5c9 | 1829 | { |
323e0a4a | 1830 | lim_warning (_("could not find bounds information on packed array")); |
14f9c5c9 AS |
1831 | return NULL; |
1832 | } | |
4c4b4cd2 | 1833 | shadow_type = SYMBOL_TYPE (sym); |
14f9c5c9 AS |
1834 | |
1835 | if (TYPE_CODE (shadow_type) != TYPE_CODE_ARRAY) | |
1836 | { | |
323e0a4a | 1837 | lim_warning (_("could not understand bounds information on packed array")); |
14f9c5c9 AS |
1838 | return NULL; |
1839 | } | |
d2e4a39e | 1840 | |
14f9c5c9 AS |
1841 | if (sscanf (tail + sizeof ("___XP") - 1, "%ld", &bits) != 1) |
1842 | { | |
4c4b4cd2 | 1843 | lim_warning |
323e0a4a | 1844 | (_("could not understand bit size information on packed array")); |
14f9c5c9 AS |
1845 | return NULL; |
1846 | } | |
d2e4a39e | 1847 | |
14f9c5c9 AS |
1848 | return packed_array_type (shadow_type, &bits); |
1849 | } | |
1850 | ||
4c4b4cd2 | 1851 | /* Given that ARR is a struct value *indicating a GNAT packed array, |
14f9c5c9 AS |
1852 | returns a simple array that denotes that array. Its type is a |
1853 | standard GDB array type except that the BITSIZEs of the array | |
1854 | target types are set to the number of bits in each element, and the | |
4c4b4cd2 | 1855 | type length is set appropriately. */ |
14f9c5c9 | 1856 | |
d2e4a39e AS |
1857 | static struct value * |
1858 | decode_packed_array (struct value *arr) | |
14f9c5c9 | 1859 | { |
4c4b4cd2 | 1860 | struct type *type; |
14f9c5c9 | 1861 | |
4c4b4cd2 | 1862 | arr = ada_coerce_ref (arr); |
df407dfe | 1863 | if (TYPE_CODE (value_type (arr)) == TYPE_CODE_PTR) |
4c4b4cd2 PH |
1864 | arr = ada_value_ind (arr); |
1865 | ||
df407dfe | 1866 | type = decode_packed_array_type (value_type (arr)); |
14f9c5c9 AS |
1867 | if (type == NULL) |
1868 | { | |
323e0a4a | 1869 | error (_("can't unpack array")); |
14f9c5c9 AS |
1870 | return NULL; |
1871 | } | |
61ee279c | 1872 | |
32c9a795 MD |
1873 | if (gdbarch_bits_big_endian (current_gdbarch) |
1874 | && ada_is_modular_type (value_type (arr))) | |
61ee279c PH |
1875 | { |
1876 | /* This is a (right-justified) modular type representing a packed | |
1877 | array with no wrapper. In order to interpret the value through | |
1878 | the (left-justified) packed array type we just built, we must | |
1879 | first left-justify it. */ | |
1880 | int bit_size, bit_pos; | |
1881 | ULONGEST mod; | |
1882 | ||
df407dfe | 1883 | mod = ada_modulus (value_type (arr)) - 1; |
61ee279c PH |
1884 | bit_size = 0; |
1885 | while (mod > 0) | |
1886 | { | |
1887 | bit_size += 1; | |
1888 | mod >>= 1; | |
1889 | } | |
df407dfe | 1890 | bit_pos = HOST_CHAR_BIT * TYPE_LENGTH (value_type (arr)) - bit_size; |
61ee279c PH |
1891 | arr = ada_value_primitive_packed_val (arr, NULL, |
1892 | bit_pos / HOST_CHAR_BIT, | |
1893 | bit_pos % HOST_CHAR_BIT, | |
1894 | bit_size, | |
1895 | type); | |
1896 | } | |
1897 | ||
4c4b4cd2 | 1898 | return coerce_unspec_val_to_type (arr, type); |
14f9c5c9 AS |
1899 | } |
1900 | ||
1901 | ||
1902 | /* The value of the element of packed array ARR at the ARITY indices | |
4c4b4cd2 | 1903 | given in IND. ARR must be a simple array. */ |
14f9c5c9 | 1904 | |
d2e4a39e AS |
1905 | static struct value * |
1906 | value_subscript_packed (struct value *arr, int arity, struct value **ind) | |
14f9c5c9 AS |
1907 | { |
1908 | int i; | |
1909 | int bits, elt_off, bit_off; | |
1910 | long elt_total_bit_offset; | |
d2e4a39e AS |
1911 | struct type *elt_type; |
1912 | struct value *v; | |
14f9c5c9 AS |
1913 | |
1914 | bits = 0; | |
1915 | elt_total_bit_offset = 0; | |
df407dfe | 1916 | elt_type = ada_check_typedef (value_type (arr)); |
d2e4a39e | 1917 | for (i = 0; i < arity; i += 1) |
14f9c5c9 | 1918 | { |
d2e4a39e | 1919 | if (TYPE_CODE (elt_type) != TYPE_CODE_ARRAY |
4c4b4cd2 PH |
1920 | || TYPE_FIELD_BITSIZE (elt_type, 0) == 0) |
1921 | error | |
323e0a4a | 1922 | (_("attempt to do packed indexing of something other than a packed array")); |
14f9c5c9 | 1923 | else |
4c4b4cd2 PH |
1924 | { |
1925 | struct type *range_type = TYPE_INDEX_TYPE (elt_type); | |
1926 | LONGEST lowerbound, upperbound; | |
1927 | LONGEST idx; | |
1928 | ||
1929 | if (get_discrete_bounds (range_type, &lowerbound, &upperbound) < 0) | |
1930 | { | |
323e0a4a | 1931 | lim_warning (_("don't know bounds of array")); |
4c4b4cd2 PH |
1932 | lowerbound = upperbound = 0; |
1933 | } | |
1934 | ||
3cb382c9 | 1935 | idx = pos_atr (ind[i]); |
4c4b4cd2 | 1936 | if (idx < lowerbound || idx > upperbound) |
323e0a4a | 1937 | lim_warning (_("packed array index %ld out of bounds"), (long) idx); |
4c4b4cd2 PH |
1938 | bits = TYPE_FIELD_BITSIZE (elt_type, 0); |
1939 | elt_total_bit_offset += (idx - lowerbound) * bits; | |
61ee279c | 1940 | elt_type = ada_check_typedef (TYPE_TARGET_TYPE (elt_type)); |
4c4b4cd2 | 1941 | } |
14f9c5c9 AS |
1942 | } |
1943 | elt_off = elt_total_bit_offset / HOST_CHAR_BIT; | |
1944 | bit_off = elt_total_bit_offset % HOST_CHAR_BIT; | |
d2e4a39e AS |
1945 | |
1946 | v = ada_value_primitive_packed_val (arr, NULL, elt_off, bit_off, | |
4c4b4cd2 | 1947 | bits, elt_type); |
14f9c5c9 AS |
1948 | return v; |
1949 | } | |
1950 | ||
4c4b4cd2 | 1951 | /* Non-zero iff TYPE includes negative integer values. */ |
14f9c5c9 AS |
1952 | |
1953 | static int | |
d2e4a39e | 1954 | has_negatives (struct type *type) |
14f9c5c9 | 1955 | { |
d2e4a39e AS |
1956 | switch (TYPE_CODE (type)) |
1957 | { | |
1958 | default: | |
1959 | return 0; | |
1960 | case TYPE_CODE_INT: | |
1961 | return !TYPE_UNSIGNED (type); | |
1962 | case TYPE_CODE_RANGE: | |
1963 | return TYPE_LOW_BOUND (type) < 0; | |
1964 | } | |
14f9c5c9 | 1965 | } |
d2e4a39e | 1966 | |
14f9c5c9 AS |
1967 | |
1968 | /* Create a new value of type TYPE from the contents of OBJ starting | |
1969 | at byte OFFSET, and bit offset BIT_OFFSET within that byte, | |
1970 | proceeding for BIT_SIZE bits. If OBJ is an lval in memory, then | |
4c4b4cd2 PH |
1971 | assigning through the result will set the field fetched from. |
1972 | VALADDR is ignored unless OBJ is NULL, in which case, | |
1973 | VALADDR+OFFSET must address the start of storage containing the | |
1974 | packed value. The value returned in this case is never an lval. | |
1975 | Assumes 0 <= BIT_OFFSET < HOST_CHAR_BIT. */ | |
14f9c5c9 | 1976 | |
d2e4a39e | 1977 | struct value * |
fc1a4b47 | 1978 | ada_value_primitive_packed_val (struct value *obj, const gdb_byte *valaddr, |
a2bd3dcd | 1979 | long offset, int bit_offset, int bit_size, |
4c4b4cd2 | 1980 | struct type *type) |
14f9c5c9 | 1981 | { |
d2e4a39e | 1982 | struct value *v; |
4c4b4cd2 PH |
1983 | int src, /* Index into the source area */ |
1984 | targ, /* Index into the target area */ | |
1985 | srcBitsLeft, /* Number of source bits left to move */ | |
1986 | nsrc, ntarg, /* Number of source and target bytes */ | |
1987 | unusedLS, /* Number of bits in next significant | |
1988 | byte of source that are unused */ | |
1989 | accumSize; /* Number of meaningful bits in accum */ | |
1990 | unsigned char *bytes; /* First byte containing data to unpack */ | |
d2e4a39e | 1991 | unsigned char *unpacked; |
4c4b4cd2 | 1992 | unsigned long accum; /* Staging area for bits being transferred */ |
14f9c5c9 AS |
1993 | unsigned char sign; |
1994 | int len = (bit_size + bit_offset + HOST_CHAR_BIT - 1) / 8; | |
4c4b4cd2 PH |
1995 | /* Transmit bytes from least to most significant; delta is the direction |
1996 | the indices move. */ | |
32c9a795 | 1997 | int delta = gdbarch_bits_big_endian (current_gdbarch) ? -1 : 1; |
14f9c5c9 | 1998 | |
61ee279c | 1999 | type = ada_check_typedef (type); |
14f9c5c9 AS |
2000 | |
2001 | if (obj == NULL) | |
2002 | { | |
2003 | v = allocate_value (type); | |
d2e4a39e | 2004 | bytes = (unsigned char *) (valaddr + offset); |
14f9c5c9 | 2005 | } |
9214ee5f | 2006 | else if (VALUE_LVAL (obj) == lval_memory && value_lazy (obj)) |
14f9c5c9 AS |
2007 | { |
2008 | v = value_at (type, | |
df407dfe | 2009 | VALUE_ADDRESS (obj) + value_offset (obj) + offset); |
d2e4a39e | 2010 | bytes = (unsigned char *) alloca (len); |
14f9c5c9 AS |
2011 | read_memory (VALUE_ADDRESS (v), bytes, len); |
2012 | } | |
d2e4a39e | 2013 | else |
14f9c5c9 AS |
2014 | { |
2015 | v = allocate_value (type); | |
0fd88904 | 2016 | bytes = (unsigned char *) value_contents (obj) + offset; |
14f9c5c9 | 2017 | } |
d2e4a39e AS |
2018 | |
2019 | if (obj != NULL) | |
14f9c5c9 AS |
2020 | { |
2021 | VALUE_LVAL (v) = VALUE_LVAL (obj); | |
2022 | if (VALUE_LVAL (obj) == lval_internalvar) | |
4c4b4cd2 | 2023 | VALUE_LVAL (v) = lval_internalvar_component; |
df407dfe | 2024 | VALUE_ADDRESS (v) = VALUE_ADDRESS (obj) + value_offset (obj) + offset; |
9bbda503 AC |
2025 | set_value_bitpos (v, bit_offset + value_bitpos (obj)); |
2026 | set_value_bitsize (v, bit_size); | |
df407dfe | 2027 | if (value_bitpos (v) >= HOST_CHAR_BIT) |
4c4b4cd2 PH |
2028 | { |
2029 | VALUE_ADDRESS (v) += 1; | |
9bbda503 | 2030 | set_value_bitpos (v, value_bitpos (v) - HOST_CHAR_BIT); |
4c4b4cd2 | 2031 | } |
14f9c5c9 AS |
2032 | } |
2033 | else | |
9bbda503 | 2034 | set_value_bitsize (v, bit_size); |
0fd88904 | 2035 | unpacked = (unsigned char *) value_contents (v); |
14f9c5c9 AS |
2036 | |
2037 | srcBitsLeft = bit_size; | |
2038 | nsrc = len; | |
2039 | ntarg = TYPE_LENGTH (type); | |
2040 | sign = 0; | |
2041 | if (bit_size == 0) | |
2042 | { | |
2043 | memset (unpacked, 0, TYPE_LENGTH (type)); | |
2044 | return v; | |
2045 | } | |
32c9a795 | 2046 | else if (gdbarch_bits_big_endian (current_gdbarch)) |
14f9c5c9 | 2047 | { |
d2e4a39e | 2048 | src = len - 1; |
1265e4aa JB |
2049 | if (has_negatives (type) |
2050 | && ((bytes[0] << bit_offset) & (1 << (HOST_CHAR_BIT - 1)))) | |
4c4b4cd2 | 2051 | sign = ~0; |
d2e4a39e AS |
2052 | |
2053 | unusedLS = | |
4c4b4cd2 PH |
2054 | (HOST_CHAR_BIT - (bit_size + bit_offset) % HOST_CHAR_BIT) |
2055 | % HOST_CHAR_BIT; | |
14f9c5c9 AS |
2056 | |
2057 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
2058 | { |
2059 | case TYPE_CODE_ARRAY: | |
2060 | case TYPE_CODE_UNION: | |
2061 | case TYPE_CODE_STRUCT: | |
2062 | /* Non-scalar values must be aligned at a byte boundary... */ | |
2063 | accumSize = | |
2064 | (HOST_CHAR_BIT - bit_size % HOST_CHAR_BIT) % HOST_CHAR_BIT; | |
2065 | /* ... And are placed at the beginning (most-significant) bytes | |
2066 | of the target. */ | |
529cad9c | 2067 | targ = (bit_size + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT - 1; |
4c4b4cd2 PH |
2068 | break; |
2069 | default: | |
2070 | accumSize = 0; | |
2071 | targ = TYPE_LENGTH (type) - 1; | |
2072 | break; | |
2073 | } | |
14f9c5c9 | 2074 | } |
d2e4a39e | 2075 | else |
14f9c5c9 AS |
2076 | { |
2077 | int sign_bit_offset = (bit_size + bit_offset - 1) % 8; | |
2078 | ||
2079 | src = targ = 0; | |
2080 | unusedLS = bit_offset; | |
2081 | accumSize = 0; | |
2082 | ||
d2e4a39e | 2083 | if (has_negatives (type) && (bytes[len - 1] & (1 << sign_bit_offset))) |
4c4b4cd2 | 2084 | sign = ~0; |
14f9c5c9 | 2085 | } |
d2e4a39e | 2086 | |
14f9c5c9 AS |
2087 | accum = 0; |
2088 | while (nsrc > 0) | |
2089 | { | |
2090 | /* Mask for removing bits of the next source byte that are not | |
4c4b4cd2 | 2091 | part of the value. */ |
d2e4a39e | 2092 | unsigned int unusedMSMask = |
4c4b4cd2 PH |
2093 | (1 << (srcBitsLeft >= HOST_CHAR_BIT ? HOST_CHAR_BIT : srcBitsLeft)) - |
2094 | 1; | |
2095 | /* Sign-extend bits for this byte. */ | |
14f9c5c9 | 2096 | unsigned int signMask = sign & ~unusedMSMask; |
d2e4a39e | 2097 | accum |= |
4c4b4cd2 | 2098 | (((bytes[src] >> unusedLS) & unusedMSMask) | signMask) << accumSize; |
14f9c5c9 | 2099 | accumSize += HOST_CHAR_BIT - unusedLS; |
d2e4a39e | 2100 | if (accumSize >= HOST_CHAR_BIT) |
4c4b4cd2 PH |
2101 | { |
2102 | unpacked[targ] = accum & ~(~0L << HOST_CHAR_BIT); | |
2103 | accumSize -= HOST_CHAR_BIT; | |
2104 | accum >>= HOST_CHAR_BIT; | |
2105 | ntarg -= 1; | |
2106 | targ += delta; | |
2107 | } | |
14f9c5c9 AS |
2108 | srcBitsLeft -= HOST_CHAR_BIT - unusedLS; |
2109 | unusedLS = 0; | |
2110 | nsrc -= 1; | |
2111 | src += delta; | |
2112 | } | |
2113 | while (ntarg > 0) | |
2114 | { | |
2115 | accum |= sign << accumSize; | |
2116 | unpacked[targ] = accum & ~(~0L << HOST_CHAR_BIT); | |
2117 | accumSize -= HOST_CHAR_BIT; | |
2118 | accum >>= HOST_CHAR_BIT; | |
2119 | ntarg -= 1; | |
2120 | targ += delta; | |
2121 | } | |
2122 | ||
2123 | return v; | |
2124 | } | |
d2e4a39e | 2125 | |
14f9c5c9 AS |
2126 | /* Move N bits from SOURCE, starting at bit offset SRC_OFFSET to |
2127 | TARGET, starting at bit offset TARG_OFFSET. SOURCE and TARGET must | |
4c4b4cd2 | 2128 | not overlap. */ |
14f9c5c9 | 2129 | static void |
fc1a4b47 | 2130 | move_bits (gdb_byte *target, int targ_offset, const gdb_byte *source, |
0fd88904 | 2131 | int src_offset, int n) |
14f9c5c9 AS |
2132 | { |
2133 | unsigned int accum, mask; | |
2134 | int accum_bits, chunk_size; | |
2135 | ||
2136 | target += targ_offset / HOST_CHAR_BIT; | |
2137 | targ_offset %= HOST_CHAR_BIT; | |
2138 | source += src_offset / HOST_CHAR_BIT; | |
2139 | src_offset %= HOST_CHAR_BIT; | |
32c9a795 | 2140 | if (gdbarch_bits_big_endian (current_gdbarch)) |
14f9c5c9 AS |
2141 | { |
2142 | accum = (unsigned char) *source; | |
2143 | source += 1; | |
2144 | accum_bits = HOST_CHAR_BIT - src_offset; | |
2145 | ||
d2e4a39e | 2146 | while (n > 0) |
4c4b4cd2 PH |
2147 | { |
2148 | int unused_right; | |
2149 | accum = (accum << HOST_CHAR_BIT) + (unsigned char) *source; | |
2150 | accum_bits += HOST_CHAR_BIT; | |
2151 | source += 1; | |
2152 | chunk_size = HOST_CHAR_BIT - targ_offset; | |
2153 | if (chunk_size > n) | |
2154 | chunk_size = n; | |
2155 | unused_right = HOST_CHAR_BIT - (chunk_size + targ_offset); | |
2156 | mask = ((1 << chunk_size) - 1) << unused_right; | |
2157 | *target = | |
2158 | (*target & ~mask) | |
2159 | | ((accum >> (accum_bits - chunk_size - unused_right)) & mask); | |
2160 | n -= chunk_size; | |
2161 | accum_bits -= chunk_size; | |
2162 | target += 1; | |
2163 | targ_offset = 0; | |
2164 | } | |
14f9c5c9 AS |
2165 | } |
2166 | else | |
2167 | { | |
2168 | accum = (unsigned char) *source >> src_offset; | |
2169 | source += 1; | |
2170 | accum_bits = HOST_CHAR_BIT - src_offset; | |
2171 | ||
d2e4a39e | 2172 | while (n > 0) |
4c4b4cd2 PH |
2173 | { |
2174 | accum = accum + ((unsigned char) *source << accum_bits); | |
2175 | accum_bits += HOST_CHAR_BIT; | |
2176 | source += 1; | |
2177 | chunk_size = HOST_CHAR_BIT - targ_offset; | |
2178 | if (chunk_size > n) | |
2179 | chunk_size = n; | |
2180 | mask = ((1 << chunk_size) - 1) << targ_offset; | |
2181 | *target = (*target & ~mask) | ((accum << targ_offset) & mask); | |
2182 | n -= chunk_size; | |
2183 | accum_bits -= chunk_size; | |
2184 | accum >>= chunk_size; | |
2185 | target += 1; | |
2186 | targ_offset = 0; | |
2187 | } | |
14f9c5c9 AS |
2188 | } |
2189 | } | |
2190 | ||
14f9c5c9 AS |
2191 | /* Store the contents of FROMVAL into the location of TOVAL. |
2192 | Return a new value with the location of TOVAL and contents of | |
2193 | FROMVAL. Handles assignment into packed fields that have | |
4c4b4cd2 | 2194 | floating-point or non-scalar types. */ |
14f9c5c9 | 2195 | |
d2e4a39e AS |
2196 | static struct value * |
2197 | ada_value_assign (struct value *toval, struct value *fromval) | |
14f9c5c9 | 2198 | { |
df407dfe AC |
2199 | struct type *type = value_type (toval); |
2200 | int bits = value_bitsize (toval); | |
14f9c5c9 | 2201 | |
52ce6436 PH |
2202 | toval = ada_coerce_ref (toval); |
2203 | fromval = ada_coerce_ref (fromval); | |
2204 | ||
2205 | if (ada_is_direct_array_type (value_type (toval))) | |
2206 | toval = ada_coerce_to_simple_array (toval); | |
2207 | if (ada_is_direct_array_type (value_type (fromval))) | |
2208 | fromval = ada_coerce_to_simple_array (fromval); | |
2209 | ||
88e3b34b | 2210 | if (!deprecated_value_modifiable (toval)) |
323e0a4a | 2211 | error (_("Left operand of assignment is not a modifiable lvalue.")); |
14f9c5c9 | 2212 | |
d2e4a39e | 2213 | if (VALUE_LVAL (toval) == lval_memory |
14f9c5c9 | 2214 | && bits > 0 |
d2e4a39e | 2215 | && (TYPE_CODE (type) == TYPE_CODE_FLT |
4c4b4cd2 | 2216 | || TYPE_CODE (type) == TYPE_CODE_STRUCT)) |
14f9c5c9 | 2217 | { |
df407dfe AC |
2218 | int len = (value_bitpos (toval) |
2219 | + bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; | |
aced2898 | 2220 | int from_size; |
d2e4a39e AS |
2221 | char *buffer = (char *) alloca (len); |
2222 | struct value *val; | |
52ce6436 | 2223 | CORE_ADDR to_addr = VALUE_ADDRESS (toval) + value_offset (toval); |
14f9c5c9 AS |
2224 | |
2225 | if (TYPE_CODE (type) == TYPE_CODE_FLT) | |
4c4b4cd2 | 2226 | fromval = value_cast (type, fromval); |
14f9c5c9 | 2227 | |
52ce6436 | 2228 | read_memory (to_addr, buffer, len); |
aced2898 PH |
2229 | from_size = value_bitsize (fromval); |
2230 | if (from_size == 0) | |
2231 | from_size = TYPE_LENGTH (value_type (fromval)) * TARGET_CHAR_BIT; | |
32c9a795 | 2232 | if (gdbarch_bits_big_endian (current_gdbarch)) |
df407dfe | 2233 | move_bits (buffer, value_bitpos (toval), |
aced2898 | 2234 | value_contents (fromval), from_size - bits, bits); |
14f9c5c9 | 2235 | else |
0fd88904 | 2236 | move_bits (buffer, value_bitpos (toval), value_contents (fromval), |
4c4b4cd2 | 2237 | 0, bits); |
52ce6436 PH |
2238 | write_memory (to_addr, buffer, len); |
2239 | if (deprecated_memory_changed_hook) | |
2240 | deprecated_memory_changed_hook (to_addr, len); | |
2241 | ||
14f9c5c9 | 2242 | val = value_copy (toval); |
0fd88904 | 2243 | memcpy (value_contents_raw (val), value_contents (fromval), |
4c4b4cd2 | 2244 | TYPE_LENGTH (type)); |
04624583 | 2245 | deprecated_set_value_type (val, type); |
d2e4a39e | 2246 | |
14f9c5c9 AS |
2247 | return val; |
2248 | } | |
2249 | ||
2250 | return value_assign (toval, fromval); | |
2251 | } | |
2252 | ||
2253 | ||
52ce6436 PH |
2254 | /* Given that COMPONENT is a memory lvalue that is part of the lvalue |
2255 | * CONTAINER, assign the contents of VAL to COMPONENTS's place in | |
2256 | * CONTAINER. Modifies the VALUE_CONTENTS of CONTAINER only, not | |
2257 | * COMPONENT, and not the inferior's memory. The current contents | |
2258 | * of COMPONENT are ignored. */ | |
2259 | static void | |
2260 | value_assign_to_component (struct value *container, struct value *component, | |
2261 | struct value *val) | |
2262 | { | |
2263 | LONGEST offset_in_container = | |
2264 | (LONGEST) (VALUE_ADDRESS (component) + value_offset (component) | |
2265 | - VALUE_ADDRESS (container) - value_offset (container)); | |
2266 | int bit_offset_in_container = | |
2267 | value_bitpos (component) - value_bitpos (container); | |
2268 | int bits; | |
2269 | ||
2270 | val = value_cast (value_type (component), val); | |
2271 | ||
2272 | if (value_bitsize (component) == 0) | |
2273 | bits = TARGET_CHAR_BIT * TYPE_LENGTH (value_type (component)); | |
2274 | else | |
2275 | bits = value_bitsize (component); | |
2276 | ||
32c9a795 | 2277 | if (gdbarch_bits_big_endian (current_gdbarch)) |
52ce6436 PH |
2278 | move_bits (value_contents_writeable (container) + offset_in_container, |
2279 | value_bitpos (container) + bit_offset_in_container, | |
2280 | value_contents (val), | |
2281 | TYPE_LENGTH (value_type (component)) * TARGET_CHAR_BIT - bits, | |
2282 | bits); | |
2283 | else | |
2284 | move_bits (value_contents_writeable (container) + offset_in_container, | |
2285 | value_bitpos (container) + bit_offset_in_container, | |
2286 | value_contents (val), 0, bits); | |
2287 | } | |
2288 | ||
4c4b4cd2 PH |
2289 | /* The value of the element of array ARR at the ARITY indices given in IND. |
2290 | ARR may be either a simple array, GNAT array descriptor, or pointer | |
14f9c5c9 AS |
2291 | thereto. */ |
2292 | ||
d2e4a39e AS |
2293 | struct value * |
2294 | ada_value_subscript (struct value *arr, int arity, struct value **ind) | |
14f9c5c9 AS |
2295 | { |
2296 | int k; | |
d2e4a39e AS |
2297 | struct value *elt; |
2298 | struct type *elt_type; | |
14f9c5c9 AS |
2299 | |
2300 | elt = ada_coerce_to_simple_array (arr); | |
2301 | ||
df407dfe | 2302 | elt_type = ada_check_typedef (value_type (elt)); |
d2e4a39e | 2303 | if (TYPE_CODE (elt_type) == TYPE_CODE_ARRAY |
14f9c5c9 AS |
2304 | && TYPE_FIELD_BITSIZE (elt_type, 0) > 0) |
2305 | return value_subscript_packed (elt, arity, ind); | |
2306 | ||
2307 | for (k = 0; k < arity; k += 1) | |
2308 | { | |
2309 | if (TYPE_CODE (elt_type) != TYPE_CODE_ARRAY) | |
323e0a4a | 2310 | error (_("too many subscripts (%d expected)"), k); |
3cb382c9 | 2311 | elt = value_subscript (elt, value_pos_atr (builtin_type_int32, ind[k])); |
14f9c5c9 AS |
2312 | } |
2313 | return elt; | |
2314 | } | |
2315 | ||
2316 | /* Assuming ARR is a pointer to a standard GDB array of type TYPE, the | |
2317 | value of the element of *ARR at the ARITY indices given in | |
4c4b4cd2 | 2318 | IND. Does not read the entire array into memory. */ |
14f9c5c9 | 2319 | |
d2e4a39e AS |
2320 | struct value * |
2321 | ada_value_ptr_subscript (struct value *arr, struct type *type, int arity, | |
4c4b4cd2 | 2322 | struct value **ind) |
14f9c5c9 AS |
2323 | { |
2324 | int k; | |
2325 | ||
2326 | for (k = 0; k < arity; k += 1) | |
2327 | { | |
2328 | LONGEST lwb, upb; | |
d2e4a39e | 2329 | struct value *idx; |
14f9c5c9 AS |
2330 | |
2331 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY) | |
323e0a4a | 2332 | error (_("too many subscripts (%d expected)"), k); |
d2e4a39e | 2333 | arr = value_cast (lookup_pointer_type (TYPE_TARGET_TYPE (type)), |
4c4b4cd2 | 2334 | value_copy (arr)); |
14f9c5c9 | 2335 | get_discrete_bounds (TYPE_INDEX_TYPE (type), &lwb, &upb); |
3cb382c9 | 2336 | idx = value_pos_atr (builtin_type_int32, ind[k]); |
4c4b4cd2 | 2337 | if (lwb != 0) |
89eef114 UW |
2338 | idx = value_binop (idx, value_from_longest (value_type (idx), lwb), |
2339 | BINOP_SUB); | |
2340 | ||
2341 | arr = value_ptradd (arr, idx); | |
14f9c5c9 AS |
2342 | type = TYPE_TARGET_TYPE (type); |
2343 | } | |
2344 | ||
2345 | return value_ind (arr); | |
2346 | } | |
2347 | ||
0b5d8877 PH |
2348 | /* Given that ARRAY_PTR is a pointer or reference to an array of type TYPE (the |
2349 | actual type of ARRAY_PTR is ignored), returns a reference to | |
2350 | the Ada slice of HIGH-LOW+1 elements starting at index LOW. The lower | |
2351 | bound of this array is LOW, as per Ada rules. */ | |
2352 | static struct value * | |
6c038f32 | 2353 | ada_value_slice_ptr (struct value *array_ptr, struct type *type, |
0b5d8877 PH |
2354 | int low, int high) |
2355 | { | |
6c038f32 | 2356 | CORE_ADDR base = value_as_address (array_ptr) |
0b5d8877 PH |
2357 | + ((low - TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type))) |
2358 | * TYPE_LENGTH (TYPE_TARGET_TYPE (type))); | |
6c038f32 PH |
2359 | struct type *index_type = |
2360 | create_range_type (NULL, TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (type)), | |
0b5d8877 | 2361 | low, high); |
6c038f32 | 2362 | struct type *slice_type = |
0b5d8877 PH |
2363 | create_array_type (NULL, TYPE_TARGET_TYPE (type), index_type); |
2364 | return value_from_pointer (lookup_reference_type (slice_type), base); | |
2365 | } | |
2366 | ||
2367 | ||
2368 | static struct value * | |
2369 | ada_value_slice (struct value *array, int low, int high) | |
2370 | { | |
df407dfe | 2371 | struct type *type = value_type (array); |
6c038f32 | 2372 | struct type *index_type = |
0b5d8877 | 2373 | create_range_type (NULL, TYPE_INDEX_TYPE (type), low, high); |
6c038f32 | 2374 | struct type *slice_type = |
0b5d8877 | 2375 | create_array_type (NULL, TYPE_TARGET_TYPE (type), index_type); |
6c038f32 | 2376 | return value_cast (slice_type, value_slice (array, low, high - low + 1)); |
0b5d8877 PH |
2377 | } |
2378 | ||
14f9c5c9 AS |
2379 | /* If type is a record type in the form of a standard GNAT array |
2380 | descriptor, returns the number of dimensions for type. If arr is a | |
2381 | simple array, returns the number of "array of"s that prefix its | |
4c4b4cd2 | 2382 | type designation. Otherwise, returns 0. */ |
14f9c5c9 AS |
2383 | |
2384 | int | |
d2e4a39e | 2385 | ada_array_arity (struct type *type) |
14f9c5c9 AS |
2386 | { |
2387 | int arity; | |
2388 | ||
2389 | if (type == NULL) | |
2390 | return 0; | |
2391 | ||
2392 | type = desc_base_type (type); | |
2393 | ||
2394 | arity = 0; | |
d2e4a39e | 2395 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
14f9c5c9 | 2396 | return desc_arity (desc_bounds_type (type)); |
d2e4a39e AS |
2397 | else |
2398 | while (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
14f9c5c9 | 2399 | { |
4c4b4cd2 | 2400 | arity += 1; |
61ee279c | 2401 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
14f9c5c9 | 2402 | } |
d2e4a39e | 2403 | |
14f9c5c9 AS |
2404 | return arity; |
2405 | } | |
2406 | ||
2407 | /* If TYPE is a record type in the form of a standard GNAT array | |
2408 | descriptor or a simple array type, returns the element type for | |
2409 | TYPE after indexing by NINDICES indices, or by all indices if | |
4c4b4cd2 | 2410 | NINDICES is -1. Otherwise, returns NULL. */ |
14f9c5c9 | 2411 | |
d2e4a39e AS |
2412 | struct type * |
2413 | ada_array_element_type (struct type *type, int nindices) | |
14f9c5c9 AS |
2414 | { |
2415 | type = desc_base_type (type); | |
2416 | ||
d2e4a39e | 2417 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
14f9c5c9 AS |
2418 | { |
2419 | int k; | |
d2e4a39e | 2420 | struct type *p_array_type; |
14f9c5c9 AS |
2421 | |
2422 | p_array_type = desc_data_type (type); | |
2423 | ||
2424 | k = ada_array_arity (type); | |
2425 | if (k == 0) | |
4c4b4cd2 | 2426 | return NULL; |
d2e4a39e | 2427 | |
4c4b4cd2 | 2428 | /* Initially p_array_type = elt_type(*)[]...(k times)...[]. */ |
14f9c5c9 | 2429 | if (nindices >= 0 && k > nindices) |
4c4b4cd2 | 2430 | k = nindices; |
14f9c5c9 | 2431 | p_array_type = TYPE_TARGET_TYPE (p_array_type); |
d2e4a39e | 2432 | while (k > 0 && p_array_type != NULL) |
4c4b4cd2 | 2433 | { |
61ee279c | 2434 | p_array_type = ada_check_typedef (TYPE_TARGET_TYPE (p_array_type)); |
4c4b4cd2 PH |
2435 | k -= 1; |
2436 | } | |
14f9c5c9 AS |
2437 | return p_array_type; |
2438 | } | |
2439 | else if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
2440 | { | |
2441 | while (nindices != 0 && TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
4c4b4cd2 PH |
2442 | { |
2443 | type = TYPE_TARGET_TYPE (type); | |
2444 | nindices -= 1; | |
2445 | } | |
14f9c5c9 AS |
2446 | return type; |
2447 | } | |
2448 | ||
2449 | return NULL; | |
2450 | } | |
2451 | ||
4c4b4cd2 PH |
2452 | /* The type of nth index in arrays of given type (n numbering from 1). |
2453 | Does not examine memory. */ | |
14f9c5c9 | 2454 | |
d2e4a39e AS |
2455 | struct type * |
2456 | ada_index_type (struct type *type, int n) | |
14f9c5c9 | 2457 | { |
4c4b4cd2 PH |
2458 | struct type *result_type; |
2459 | ||
14f9c5c9 AS |
2460 | type = desc_base_type (type); |
2461 | ||
2462 | if (n > ada_array_arity (type)) | |
2463 | return NULL; | |
2464 | ||
4c4b4cd2 | 2465 | if (ada_is_simple_array_type (type)) |
14f9c5c9 AS |
2466 | { |
2467 | int i; | |
2468 | ||
2469 | for (i = 1; i < n; i += 1) | |
4c4b4cd2 PH |
2470 | type = TYPE_TARGET_TYPE (type); |
2471 | result_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0)); | |
2472 | /* FIXME: The stabs type r(0,0);bound;bound in an array type | |
2473 | has a target type of TYPE_CODE_UNDEF. We compensate here, but | |
76a01679 JB |
2474 | perhaps stabsread.c would make more sense. */ |
2475 | if (result_type == NULL || TYPE_CODE (result_type) == TYPE_CODE_UNDEF) | |
6d84d3d8 | 2476 | result_type = builtin_type_int32; |
14f9c5c9 | 2477 | |
4c4b4cd2 | 2478 | return result_type; |
14f9c5c9 | 2479 | } |
d2e4a39e | 2480 | else |
14f9c5c9 AS |
2481 | return desc_index_type (desc_bounds_type (type), n); |
2482 | } | |
2483 | ||
2484 | /* Given that arr is an array type, returns the lower bound of the | |
2485 | Nth index (numbering from 1) if WHICH is 0, and the upper bound if | |
4c4b4cd2 PH |
2486 | WHICH is 1. This returns bounds 0 .. -1 if ARR_TYPE is an |
2487 | array-descriptor type. If TYPEP is non-null, *TYPEP is set to the | |
2488 | bounds type. It works for other arrays with bounds supplied by | |
2489 | run-time quantities other than discriminants. */ | |
14f9c5c9 | 2490 | |
abb68b3e | 2491 | static LONGEST |
d2e4a39e | 2492 | ada_array_bound_from_type (struct type * arr_type, int n, int which, |
4c4b4cd2 | 2493 | struct type ** typep) |
14f9c5c9 | 2494 | { |
d2e4a39e AS |
2495 | struct type *type; |
2496 | struct type *index_type_desc; | |
14f9c5c9 AS |
2497 | |
2498 | if (ada_is_packed_array_type (arr_type)) | |
2499 | arr_type = decode_packed_array_type (arr_type); | |
2500 | ||
4c4b4cd2 | 2501 | if (arr_type == NULL || !ada_is_simple_array_type (arr_type)) |
14f9c5c9 AS |
2502 | { |
2503 | if (typep != NULL) | |
6d84d3d8 | 2504 | *typep = builtin_type_int32; |
d2e4a39e | 2505 | return (LONGEST) - which; |
14f9c5c9 AS |
2506 | } |
2507 | ||
2508 | if (TYPE_CODE (arr_type) == TYPE_CODE_PTR) | |
2509 | type = TYPE_TARGET_TYPE (arr_type); | |
2510 | else | |
2511 | type = arr_type; | |
2512 | ||
2513 | index_type_desc = ada_find_parallel_type (type, "___XA"); | |
d2e4a39e | 2514 | if (index_type_desc == NULL) |
14f9c5c9 | 2515 | { |
d2e4a39e | 2516 | struct type *index_type; |
14f9c5c9 | 2517 | |
d2e4a39e | 2518 | while (n > 1) |
4c4b4cd2 PH |
2519 | { |
2520 | type = TYPE_TARGET_TYPE (type); | |
2521 | n -= 1; | |
2522 | } | |
14f9c5c9 | 2523 | |
abb68b3e | 2524 | index_type = TYPE_INDEX_TYPE (type); |
14f9c5c9 | 2525 | if (typep != NULL) |
4c4b4cd2 | 2526 | *typep = index_type; |
abb68b3e JB |
2527 | |
2528 | /* The index type is either a range type or an enumerated type. | |
2529 | For the range type, we have some macros that allow us to | |
2530 | extract the value of the low and high bounds. But they | |
2531 | do now work for enumerated types. The expressions used | |
2532 | below work for both range and enum types. */ | |
d2e4a39e | 2533 | return |
4c4b4cd2 | 2534 | (LONGEST) (which == 0 |
abb68b3e JB |
2535 | ? TYPE_FIELD_BITPOS (index_type, 0) |
2536 | : TYPE_FIELD_BITPOS (index_type, | |
2537 | TYPE_NFIELDS (index_type) - 1)); | |
14f9c5c9 | 2538 | } |
d2e4a39e | 2539 | else |
14f9c5c9 | 2540 | { |
d2e4a39e | 2541 | struct type *index_type = |
4c4b4cd2 PH |
2542 | to_fixed_range_type (TYPE_FIELD_NAME (index_type_desc, n - 1), |
2543 | NULL, TYPE_OBJFILE (arr_type)); | |
abb68b3e | 2544 | |
14f9c5c9 | 2545 | if (typep != NULL) |
abb68b3e JB |
2546 | *typep = index_type; |
2547 | ||
d2e4a39e | 2548 | return |
4c4b4cd2 PH |
2549 | (LONGEST) (which == 0 |
2550 | ? TYPE_LOW_BOUND (index_type) | |
2551 | : TYPE_HIGH_BOUND (index_type)); | |
14f9c5c9 AS |
2552 | } |
2553 | } | |
2554 | ||
2555 | /* Given that arr is an array value, returns the lower bound of the | |
abb68b3e JB |
2556 | nth index (numbering from 1) if WHICH is 0, and the upper bound if |
2557 | WHICH is 1. This routine will also work for arrays with bounds | |
4c4b4cd2 | 2558 | supplied by run-time quantities other than discriminants. */ |
14f9c5c9 | 2559 | |
d2e4a39e | 2560 | struct value * |
4dc81987 | 2561 | ada_array_bound (struct value *arr, int n, int which) |
14f9c5c9 | 2562 | { |
df407dfe | 2563 | struct type *arr_type = value_type (arr); |
14f9c5c9 AS |
2564 | |
2565 | if (ada_is_packed_array_type (arr_type)) | |
2566 | return ada_array_bound (decode_packed_array (arr), n, which); | |
4c4b4cd2 | 2567 | else if (ada_is_simple_array_type (arr_type)) |
14f9c5c9 | 2568 | { |
d2e4a39e | 2569 | struct type *type; |
14f9c5c9 AS |
2570 | LONGEST v = ada_array_bound_from_type (arr_type, n, which, &type); |
2571 | return value_from_longest (type, v); | |
2572 | } | |
2573 | else | |
2574 | return desc_one_bound (desc_bounds (arr), n, which); | |
2575 | } | |
2576 | ||
2577 | /* Given that arr is an array value, returns the length of the | |
2578 | nth index. This routine will also work for arrays with bounds | |
4c4b4cd2 PH |
2579 | supplied by run-time quantities other than discriminants. |
2580 | Does not work for arrays indexed by enumeration types with representation | |
2581 | clauses at the moment. */ | |
14f9c5c9 | 2582 | |
d2e4a39e AS |
2583 | struct value * |
2584 | ada_array_length (struct value *arr, int n) | |
14f9c5c9 | 2585 | { |
df407dfe | 2586 | struct type *arr_type = ada_check_typedef (value_type (arr)); |
14f9c5c9 AS |
2587 | |
2588 | if (ada_is_packed_array_type (arr_type)) | |
2589 | return ada_array_length (decode_packed_array (arr), n); | |
2590 | ||
4c4b4cd2 | 2591 | if (ada_is_simple_array_type (arr_type)) |
14f9c5c9 | 2592 | { |
d2e4a39e | 2593 | struct type *type; |
14f9c5c9 | 2594 | LONGEST v = |
4c4b4cd2 PH |
2595 | ada_array_bound_from_type (arr_type, n, 1, &type) - |
2596 | ada_array_bound_from_type (arr_type, n, 0, NULL) + 1; | |
14f9c5c9 AS |
2597 | return value_from_longest (type, v); |
2598 | } | |
2599 | else | |
d2e4a39e | 2600 | return |
030b4912 | 2601 | value_from_longest (builtin_type_int32, |
4c4b4cd2 PH |
2602 | value_as_long (desc_one_bound (desc_bounds (arr), |
2603 | n, 1)) | |
2604 | - value_as_long (desc_one_bound (desc_bounds (arr), | |
2605 | n, 0)) + 1); | |
2606 | } | |
2607 | ||
2608 | /* An empty array whose type is that of ARR_TYPE (an array type), | |
2609 | with bounds LOW to LOW-1. */ | |
2610 | ||
2611 | static struct value * | |
2612 | empty_array (struct type *arr_type, int low) | |
2613 | { | |
6c038f32 | 2614 | struct type *index_type = |
0b5d8877 PH |
2615 | create_range_type (NULL, TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (arr_type)), |
2616 | low, low - 1); | |
2617 | struct type *elt_type = ada_array_element_type (arr_type, 1); | |
2618 | return allocate_value (create_array_type (NULL, elt_type, index_type)); | |
14f9c5c9 | 2619 | } |
14f9c5c9 | 2620 | \f |
d2e4a39e | 2621 | |
4c4b4cd2 | 2622 | /* Name resolution */ |
14f9c5c9 | 2623 | |
4c4b4cd2 PH |
2624 | /* The "decoded" name for the user-definable Ada operator corresponding |
2625 | to OP. */ | |
14f9c5c9 | 2626 | |
d2e4a39e | 2627 | static const char * |
4c4b4cd2 | 2628 | ada_decoded_op_name (enum exp_opcode op) |
14f9c5c9 AS |
2629 | { |
2630 | int i; | |
2631 | ||
4c4b4cd2 | 2632 | for (i = 0; ada_opname_table[i].encoded != NULL; i += 1) |
14f9c5c9 AS |
2633 | { |
2634 | if (ada_opname_table[i].op == op) | |
4c4b4cd2 | 2635 | return ada_opname_table[i].decoded; |
14f9c5c9 | 2636 | } |
323e0a4a | 2637 | error (_("Could not find operator name for opcode")); |
14f9c5c9 AS |
2638 | } |
2639 | ||
2640 | ||
4c4b4cd2 PH |
2641 | /* Same as evaluate_type (*EXP), but resolves ambiguous symbol |
2642 | references (marked by OP_VAR_VALUE nodes in which the symbol has an | |
2643 | undefined namespace) and converts operators that are | |
2644 | user-defined into appropriate function calls. If CONTEXT_TYPE is | |
14f9c5c9 AS |
2645 | non-null, it provides a preferred result type [at the moment, only |
2646 | type void has any effect---causing procedures to be preferred over | |
2647 | functions in calls]. A null CONTEXT_TYPE indicates that a non-void | |
4c4b4cd2 | 2648 | return type is preferred. May change (expand) *EXP. */ |
14f9c5c9 | 2649 | |
4c4b4cd2 PH |
2650 | static void |
2651 | resolve (struct expression **expp, int void_context_p) | |
14f9c5c9 AS |
2652 | { |
2653 | int pc; | |
2654 | pc = 0; | |
4c4b4cd2 | 2655 | resolve_subexp (expp, &pc, 1, void_context_p ? builtin_type_void : NULL); |
14f9c5c9 AS |
2656 | } |
2657 | ||
4c4b4cd2 PH |
2658 | /* Resolve the operator of the subexpression beginning at |
2659 | position *POS of *EXPP. "Resolving" consists of replacing | |
2660 | the symbols that have undefined namespaces in OP_VAR_VALUE nodes | |
2661 | with their resolutions, replacing built-in operators with | |
2662 | function calls to user-defined operators, where appropriate, and, | |
2663 | when DEPROCEDURE_P is non-zero, converting function-valued variables | |
2664 | into parameterless calls. May expand *EXPP. The CONTEXT_TYPE functions | |
2665 | are as in ada_resolve, above. */ | |
14f9c5c9 | 2666 | |
d2e4a39e | 2667 | static struct value * |
4c4b4cd2 | 2668 | resolve_subexp (struct expression **expp, int *pos, int deprocedure_p, |
76a01679 | 2669 | struct type *context_type) |
14f9c5c9 AS |
2670 | { |
2671 | int pc = *pos; | |
2672 | int i; | |
4c4b4cd2 | 2673 | struct expression *exp; /* Convenience: == *expp. */ |
14f9c5c9 | 2674 | enum exp_opcode op = (*expp)->elts[pc].opcode; |
4c4b4cd2 PH |
2675 | struct value **argvec; /* Vector of operand types (alloca'ed). */ |
2676 | int nargs; /* Number of operands. */ | |
52ce6436 | 2677 | int oplen; |
14f9c5c9 AS |
2678 | |
2679 | argvec = NULL; | |
2680 | nargs = 0; | |
2681 | exp = *expp; | |
2682 | ||
52ce6436 PH |
2683 | /* Pass one: resolve operands, saving their types and updating *pos, |
2684 | if needed. */ | |
14f9c5c9 AS |
2685 | switch (op) |
2686 | { | |
4c4b4cd2 PH |
2687 | case OP_FUNCALL: |
2688 | if (exp->elts[pc + 3].opcode == OP_VAR_VALUE | |
76a01679 JB |
2689 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
2690 | *pos += 7; | |
4c4b4cd2 PH |
2691 | else |
2692 | { | |
2693 | *pos += 3; | |
2694 | resolve_subexp (expp, pos, 0, NULL); | |
2695 | } | |
2696 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
14f9c5c9 AS |
2697 | break; |
2698 | ||
14f9c5c9 | 2699 | case UNOP_ADDR: |
4c4b4cd2 PH |
2700 | *pos += 1; |
2701 | resolve_subexp (expp, pos, 0, NULL); | |
2702 | break; | |
2703 | ||
52ce6436 PH |
2704 | case UNOP_QUAL: |
2705 | *pos += 3; | |
2706 | resolve_subexp (expp, pos, 1, exp->elts[pc + 1].type); | |
4c4b4cd2 PH |
2707 | break; |
2708 | ||
52ce6436 | 2709 | case OP_ATR_MODULUS: |
4c4b4cd2 PH |
2710 | case OP_ATR_SIZE: |
2711 | case OP_ATR_TAG: | |
4c4b4cd2 PH |
2712 | case OP_ATR_FIRST: |
2713 | case OP_ATR_LAST: | |
2714 | case OP_ATR_LENGTH: | |
2715 | case OP_ATR_POS: | |
2716 | case OP_ATR_VAL: | |
4c4b4cd2 PH |
2717 | case OP_ATR_MIN: |
2718 | case OP_ATR_MAX: | |
52ce6436 PH |
2719 | case TERNOP_IN_RANGE: |
2720 | case BINOP_IN_BOUNDS: | |
2721 | case UNOP_IN_RANGE: | |
2722 | case OP_AGGREGATE: | |
2723 | case OP_OTHERS: | |
2724 | case OP_CHOICES: | |
2725 | case OP_POSITIONAL: | |
2726 | case OP_DISCRETE_RANGE: | |
2727 | case OP_NAME: | |
2728 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
2729 | *pos += oplen; | |
14f9c5c9 AS |
2730 | break; |
2731 | ||
2732 | case BINOP_ASSIGN: | |
2733 | { | |
4c4b4cd2 PH |
2734 | struct value *arg1; |
2735 | ||
2736 | *pos += 1; | |
2737 | arg1 = resolve_subexp (expp, pos, 0, NULL); | |
2738 | if (arg1 == NULL) | |
2739 | resolve_subexp (expp, pos, 1, NULL); | |
2740 | else | |
df407dfe | 2741 | resolve_subexp (expp, pos, 1, value_type (arg1)); |
4c4b4cd2 | 2742 | break; |
14f9c5c9 AS |
2743 | } |
2744 | ||
4c4b4cd2 | 2745 | case UNOP_CAST: |
4c4b4cd2 PH |
2746 | *pos += 3; |
2747 | nargs = 1; | |
2748 | break; | |
14f9c5c9 | 2749 | |
4c4b4cd2 PH |
2750 | case BINOP_ADD: |
2751 | case BINOP_SUB: | |
2752 | case BINOP_MUL: | |
2753 | case BINOP_DIV: | |
2754 | case BINOP_REM: | |
2755 | case BINOP_MOD: | |
2756 | case BINOP_EXP: | |
2757 | case BINOP_CONCAT: | |
2758 | case BINOP_LOGICAL_AND: | |
2759 | case BINOP_LOGICAL_OR: | |
2760 | case BINOP_BITWISE_AND: | |
2761 | case BINOP_BITWISE_IOR: | |
2762 | case BINOP_BITWISE_XOR: | |
14f9c5c9 | 2763 | |
4c4b4cd2 PH |
2764 | case BINOP_EQUAL: |
2765 | case BINOP_NOTEQUAL: | |
2766 | case BINOP_LESS: | |
2767 | case BINOP_GTR: | |
2768 | case BINOP_LEQ: | |
2769 | case BINOP_GEQ: | |
14f9c5c9 | 2770 | |
4c4b4cd2 PH |
2771 | case BINOP_REPEAT: |
2772 | case BINOP_SUBSCRIPT: | |
2773 | case BINOP_COMMA: | |
40c8aaa9 JB |
2774 | *pos += 1; |
2775 | nargs = 2; | |
2776 | break; | |
14f9c5c9 | 2777 | |
4c4b4cd2 PH |
2778 | case UNOP_NEG: |
2779 | case UNOP_PLUS: | |
2780 | case UNOP_LOGICAL_NOT: | |
2781 | case UNOP_ABS: | |
2782 | case UNOP_IND: | |
2783 | *pos += 1; | |
2784 | nargs = 1; | |
2785 | break; | |
14f9c5c9 | 2786 | |
4c4b4cd2 PH |
2787 | case OP_LONG: |
2788 | case OP_DOUBLE: | |
2789 | case OP_VAR_VALUE: | |
2790 | *pos += 4; | |
2791 | break; | |
14f9c5c9 | 2792 | |
4c4b4cd2 PH |
2793 | case OP_TYPE: |
2794 | case OP_BOOL: | |
2795 | case OP_LAST: | |
4c4b4cd2 PH |
2796 | case OP_INTERNALVAR: |
2797 | *pos += 3; | |
2798 | break; | |
14f9c5c9 | 2799 | |
4c4b4cd2 PH |
2800 | case UNOP_MEMVAL: |
2801 | *pos += 3; | |
2802 | nargs = 1; | |
2803 | break; | |
2804 | ||
67f3407f DJ |
2805 | case OP_REGISTER: |
2806 | *pos += 4 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1); | |
2807 | break; | |
2808 | ||
4c4b4cd2 PH |
2809 | case STRUCTOP_STRUCT: |
2810 | *pos += 4 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1); | |
2811 | nargs = 1; | |
2812 | break; | |
2813 | ||
4c4b4cd2 | 2814 | case TERNOP_SLICE: |
4c4b4cd2 PH |
2815 | *pos += 1; |
2816 | nargs = 3; | |
2817 | break; | |
2818 | ||
52ce6436 | 2819 | case OP_STRING: |
14f9c5c9 | 2820 | break; |
4c4b4cd2 PH |
2821 | |
2822 | default: | |
323e0a4a | 2823 | error (_("Unexpected operator during name resolution")); |
14f9c5c9 AS |
2824 | } |
2825 | ||
76a01679 | 2826 | argvec = (struct value * *) alloca (sizeof (struct value *) * (nargs + 1)); |
4c4b4cd2 PH |
2827 | for (i = 0; i < nargs; i += 1) |
2828 | argvec[i] = resolve_subexp (expp, pos, 1, NULL); | |
2829 | argvec[i] = NULL; | |
2830 | exp = *expp; | |
2831 | ||
2832 | /* Pass two: perform any resolution on principal operator. */ | |
14f9c5c9 AS |
2833 | switch (op) |
2834 | { | |
2835 | default: | |
2836 | break; | |
2837 | ||
14f9c5c9 | 2838 | case OP_VAR_VALUE: |
4c4b4cd2 | 2839 | if (SYMBOL_DOMAIN (exp->elts[pc + 2].symbol) == UNDEF_DOMAIN) |
76a01679 JB |
2840 | { |
2841 | struct ada_symbol_info *candidates; | |
2842 | int n_candidates; | |
2843 | ||
2844 | n_candidates = | |
2845 | ada_lookup_symbol_list (SYMBOL_LINKAGE_NAME | |
2846 | (exp->elts[pc + 2].symbol), | |
2847 | exp->elts[pc + 1].block, VAR_DOMAIN, | |
2848 | &candidates); | |
2849 | ||
2850 | if (n_candidates > 1) | |
2851 | { | |
2852 | /* Types tend to get re-introduced locally, so if there | |
2853 | are any local symbols that are not types, first filter | |
2854 | out all types. */ | |
2855 | int j; | |
2856 | for (j = 0; j < n_candidates; j += 1) | |
2857 | switch (SYMBOL_CLASS (candidates[j].sym)) | |
2858 | { | |
2859 | case LOC_REGISTER: | |
2860 | case LOC_ARG: | |
2861 | case LOC_REF_ARG: | |
76a01679 JB |
2862 | case LOC_REGPARM_ADDR: |
2863 | case LOC_LOCAL: | |
76a01679 | 2864 | case LOC_COMPUTED: |
76a01679 JB |
2865 | goto FoundNonType; |
2866 | default: | |
2867 | break; | |
2868 | } | |
2869 | FoundNonType: | |
2870 | if (j < n_candidates) | |
2871 | { | |
2872 | j = 0; | |
2873 | while (j < n_candidates) | |
2874 | { | |
2875 | if (SYMBOL_CLASS (candidates[j].sym) == LOC_TYPEDEF) | |
2876 | { | |
2877 | candidates[j] = candidates[n_candidates - 1]; | |
2878 | n_candidates -= 1; | |
2879 | } | |
2880 | else | |
2881 | j += 1; | |
2882 | } | |
2883 | } | |
2884 | } | |
2885 | ||
2886 | if (n_candidates == 0) | |
323e0a4a | 2887 | error (_("No definition found for %s"), |
76a01679 JB |
2888 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
2889 | else if (n_candidates == 1) | |
2890 | i = 0; | |
2891 | else if (deprocedure_p | |
2892 | && !is_nonfunction (candidates, n_candidates)) | |
2893 | { | |
06d5cf63 JB |
2894 | i = ada_resolve_function |
2895 | (candidates, n_candidates, NULL, 0, | |
2896 | SYMBOL_LINKAGE_NAME (exp->elts[pc + 2].symbol), | |
2897 | context_type); | |
76a01679 | 2898 | if (i < 0) |
323e0a4a | 2899 | error (_("Could not find a match for %s"), |
76a01679 JB |
2900 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
2901 | } | |
2902 | else | |
2903 | { | |
323e0a4a | 2904 | printf_filtered (_("Multiple matches for %s\n"), |
76a01679 JB |
2905 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
2906 | user_select_syms (candidates, n_candidates, 1); | |
2907 | i = 0; | |
2908 | } | |
2909 | ||
2910 | exp->elts[pc + 1].block = candidates[i].block; | |
2911 | exp->elts[pc + 2].symbol = candidates[i].sym; | |
1265e4aa JB |
2912 | if (innermost_block == NULL |
2913 | || contained_in (candidates[i].block, innermost_block)) | |
76a01679 JB |
2914 | innermost_block = candidates[i].block; |
2915 | } | |
2916 | ||
2917 | if (deprocedure_p | |
2918 | && (TYPE_CODE (SYMBOL_TYPE (exp->elts[pc + 2].symbol)) | |
2919 | == TYPE_CODE_FUNC)) | |
2920 | { | |
2921 | replace_operator_with_call (expp, pc, 0, 0, | |
2922 | exp->elts[pc + 2].symbol, | |
2923 | exp->elts[pc + 1].block); | |
2924 | exp = *expp; | |
2925 | } | |
14f9c5c9 AS |
2926 | break; |
2927 | ||
2928 | case OP_FUNCALL: | |
2929 | { | |
4c4b4cd2 | 2930 | if (exp->elts[pc + 3].opcode == OP_VAR_VALUE |
76a01679 | 2931 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
4c4b4cd2 PH |
2932 | { |
2933 | struct ada_symbol_info *candidates; | |
2934 | int n_candidates; | |
2935 | ||
2936 | n_candidates = | |
76a01679 JB |
2937 | ada_lookup_symbol_list (SYMBOL_LINKAGE_NAME |
2938 | (exp->elts[pc + 5].symbol), | |
2939 | exp->elts[pc + 4].block, VAR_DOMAIN, | |
2940 | &candidates); | |
4c4b4cd2 PH |
2941 | if (n_candidates == 1) |
2942 | i = 0; | |
2943 | else | |
2944 | { | |
06d5cf63 JB |
2945 | i = ada_resolve_function |
2946 | (candidates, n_candidates, | |
2947 | argvec, nargs, | |
2948 | SYMBOL_LINKAGE_NAME (exp->elts[pc + 5].symbol), | |
2949 | context_type); | |
4c4b4cd2 | 2950 | if (i < 0) |
323e0a4a | 2951 | error (_("Could not find a match for %s"), |
4c4b4cd2 PH |
2952 | SYMBOL_PRINT_NAME (exp->elts[pc + 5].symbol)); |
2953 | } | |
2954 | ||
2955 | exp->elts[pc + 4].block = candidates[i].block; | |
2956 | exp->elts[pc + 5].symbol = candidates[i].sym; | |
1265e4aa JB |
2957 | if (innermost_block == NULL |
2958 | || contained_in (candidates[i].block, innermost_block)) | |
4c4b4cd2 PH |
2959 | innermost_block = candidates[i].block; |
2960 | } | |
14f9c5c9 AS |
2961 | } |
2962 | break; | |
2963 | case BINOP_ADD: | |
2964 | case BINOP_SUB: | |
2965 | case BINOP_MUL: | |
2966 | case BINOP_DIV: | |
2967 | case BINOP_REM: | |
2968 | case BINOP_MOD: | |
2969 | case BINOP_CONCAT: | |
2970 | case BINOP_BITWISE_AND: | |
2971 | case BINOP_BITWISE_IOR: | |
2972 | case BINOP_BITWISE_XOR: | |
2973 | case BINOP_EQUAL: | |
2974 | case BINOP_NOTEQUAL: | |
2975 | case BINOP_LESS: | |
2976 | case BINOP_GTR: | |
2977 | case BINOP_LEQ: | |
2978 | case BINOP_GEQ: | |
2979 | case BINOP_EXP: | |
2980 | case UNOP_NEG: | |
2981 | case UNOP_PLUS: | |
2982 | case UNOP_LOGICAL_NOT: | |
2983 | case UNOP_ABS: | |
2984 | if (possible_user_operator_p (op, argvec)) | |
4c4b4cd2 PH |
2985 | { |
2986 | struct ada_symbol_info *candidates; | |
2987 | int n_candidates; | |
2988 | ||
2989 | n_candidates = | |
2990 | ada_lookup_symbol_list (ada_encode (ada_decoded_op_name (op)), | |
2991 | (struct block *) NULL, VAR_DOMAIN, | |
2992 | &candidates); | |
2993 | i = ada_resolve_function (candidates, n_candidates, argvec, nargs, | |
76a01679 | 2994 | ada_decoded_op_name (op), NULL); |
4c4b4cd2 PH |
2995 | if (i < 0) |
2996 | break; | |
2997 | ||
76a01679 JB |
2998 | replace_operator_with_call (expp, pc, nargs, 1, |
2999 | candidates[i].sym, candidates[i].block); | |
4c4b4cd2 PH |
3000 | exp = *expp; |
3001 | } | |
14f9c5c9 | 3002 | break; |
4c4b4cd2 PH |
3003 | |
3004 | case OP_TYPE: | |
b3dbf008 | 3005 | case OP_REGISTER: |
4c4b4cd2 | 3006 | return NULL; |
14f9c5c9 AS |
3007 | } |
3008 | ||
3009 | *pos = pc; | |
3010 | return evaluate_subexp_type (exp, pos); | |
3011 | } | |
3012 | ||
3013 | /* Return non-zero if formal type FTYPE matches actual type ATYPE. If | |
4c4b4cd2 PH |
3014 | MAY_DEREF is non-zero, the formal may be a pointer and the actual |
3015 | a non-pointer. A type of 'void' (which is never a valid expression type) | |
3016 | by convention matches anything. */ | |
14f9c5c9 | 3017 | /* The term "match" here is rather loose. The match is heuristic and |
4c4b4cd2 | 3018 | liberal. FIXME: TOO liberal, in fact. */ |
14f9c5c9 AS |
3019 | |
3020 | static int | |
4dc81987 | 3021 | ada_type_match (struct type *ftype, struct type *atype, int may_deref) |
14f9c5c9 | 3022 | { |
61ee279c PH |
3023 | ftype = ada_check_typedef (ftype); |
3024 | atype = ada_check_typedef (atype); | |
14f9c5c9 AS |
3025 | |
3026 | if (TYPE_CODE (ftype) == TYPE_CODE_REF) | |
3027 | ftype = TYPE_TARGET_TYPE (ftype); | |
3028 | if (TYPE_CODE (atype) == TYPE_CODE_REF) | |
3029 | atype = TYPE_TARGET_TYPE (atype); | |
3030 | ||
d2e4a39e | 3031 | if (TYPE_CODE (ftype) == TYPE_CODE_VOID |
14f9c5c9 AS |
3032 | || TYPE_CODE (atype) == TYPE_CODE_VOID) |
3033 | return 1; | |
3034 | ||
d2e4a39e | 3035 | switch (TYPE_CODE (ftype)) |
14f9c5c9 AS |
3036 | { |
3037 | default: | |
3038 | return 1; | |
3039 | case TYPE_CODE_PTR: | |
3040 | if (TYPE_CODE (atype) == TYPE_CODE_PTR) | |
4c4b4cd2 PH |
3041 | return ada_type_match (TYPE_TARGET_TYPE (ftype), |
3042 | TYPE_TARGET_TYPE (atype), 0); | |
d2e4a39e | 3043 | else |
1265e4aa JB |
3044 | return (may_deref |
3045 | && ada_type_match (TYPE_TARGET_TYPE (ftype), atype, 0)); | |
14f9c5c9 AS |
3046 | case TYPE_CODE_INT: |
3047 | case TYPE_CODE_ENUM: | |
3048 | case TYPE_CODE_RANGE: | |
3049 | switch (TYPE_CODE (atype)) | |
4c4b4cd2 PH |
3050 | { |
3051 | case TYPE_CODE_INT: | |
3052 | case TYPE_CODE_ENUM: | |
3053 | case TYPE_CODE_RANGE: | |
3054 | return 1; | |
3055 | default: | |
3056 | return 0; | |
3057 | } | |
14f9c5c9 AS |
3058 | |
3059 | case TYPE_CODE_ARRAY: | |
d2e4a39e | 3060 | return (TYPE_CODE (atype) == TYPE_CODE_ARRAY |
4c4b4cd2 | 3061 | || ada_is_array_descriptor_type (atype)); |
14f9c5c9 AS |
3062 | |
3063 | case TYPE_CODE_STRUCT: | |
4c4b4cd2 PH |
3064 | if (ada_is_array_descriptor_type (ftype)) |
3065 | return (TYPE_CODE (atype) == TYPE_CODE_ARRAY | |
3066 | || ada_is_array_descriptor_type (atype)); | |
14f9c5c9 | 3067 | else |
4c4b4cd2 PH |
3068 | return (TYPE_CODE (atype) == TYPE_CODE_STRUCT |
3069 | && !ada_is_array_descriptor_type (atype)); | |
14f9c5c9 AS |
3070 | |
3071 | case TYPE_CODE_UNION: | |
3072 | case TYPE_CODE_FLT: | |
3073 | return (TYPE_CODE (atype) == TYPE_CODE (ftype)); | |
3074 | } | |
3075 | } | |
3076 | ||
3077 | /* Return non-zero if the formals of FUNC "sufficiently match" the | |
3078 | vector of actual argument types ACTUALS of size N_ACTUALS. FUNC | |
3079 | may also be an enumeral, in which case it is treated as a 0- | |
4c4b4cd2 | 3080 | argument function. */ |
14f9c5c9 AS |
3081 | |
3082 | static int | |
d2e4a39e | 3083 | ada_args_match (struct symbol *func, struct value **actuals, int n_actuals) |
14f9c5c9 AS |
3084 | { |
3085 | int i; | |
d2e4a39e | 3086 | struct type *func_type = SYMBOL_TYPE (func); |
14f9c5c9 | 3087 | |
1265e4aa JB |
3088 | if (SYMBOL_CLASS (func) == LOC_CONST |
3089 | && TYPE_CODE (func_type) == TYPE_CODE_ENUM) | |
14f9c5c9 AS |
3090 | return (n_actuals == 0); |
3091 | else if (func_type == NULL || TYPE_CODE (func_type) != TYPE_CODE_FUNC) | |
3092 | return 0; | |
3093 | ||
3094 | if (TYPE_NFIELDS (func_type) != n_actuals) | |
3095 | return 0; | |
3096 | ||
3097 | for (i = 0; i < n_actuals; i += 1) | |
3098 | { | |
4c4b4cd2 | 3099 | if (actuals[i] == NULL) |
76a01679 JB |
3100 | return 0; |
3101 | else | |
3102 | { | |
61ee279c | 3103 | struct type *ftype = ada_check_typedef (TYPE_FIELD_TYPE (func_type, i)); |
df407dfe | 3104 | struct type *atype = ada_check_typedef (value_type (actuals[i])); |
4c4b4cd2 | 3105 | |
76a01679 JB |
3106 | if (!ada_type_match (ftype, atype, 1)) |
3107 | return 0; | |
3108 | } | |
14f9c5c9 AS |
3109 | } |
3110 | return 1; | |
3111 | } | |
3112 | ||
3113 | /* False iff function type FUNC_TYPE definitely does not produce a value | |
3114 | compatible with type CONTEXT_TYPE. Conservatively returns 1 if | |
3115 | FUNC_TYPE is not a valid function type with a non-null return type | |
3116 | or an enumerated type. A null CONTEXT_TYPE indicates any non-void type. */ | |
3117 | ||
3118 | static int | |
d2e4a39e | 3119 | return_match (struct type *func_type, struct type *context_type) |
14f9c5c9 | 3120 | { |
d2e4a39e | 3121 | struct type *return_type; |
14f9c5c9 AS |
3122 | |
3123 | if (func_type == NULL) | |
3124 | return 1; | |
3125 | ||
4c4b4cd2 PH |
3126 | if (TYPE_CODE (func_type) == TYPE_CODE_FUNC) |
3127 | return_type = base_type (TYPE_TARGET_TYPE (func_type)); | |
3128 | else | |
3129 | return_type = base_type (func_type); | |
14f9c5c9 AS |
3130 | if (return_type == NULL) |
3131 | return 1; | |
3132 | ||
4c4b4cd2 | 3133 | context_type = base_type (context_type); |
14f9c5c9 AS |
3134 | |
3135 | if (TYPE_CODE (return_type) == TYPE_CODE_ENUM) | |
3136 | return context_type == NULL || return_type == context_type; | |
3137 | else if (context_type == NULL) | |
3138 | return TYPE_CODE (return_type) != TYPE_CODE_VOID; | |
3139 | else | |
3140 | return TYPE_CODE (return_type) == TYPE_CODE (context_type); | |
3141 | } | |
3142 | ||
3143 | ||
4c4b4cd2 | 3144 | /* Returns the index in SYMS[0..NSYMS-1] that contains the symbol for the |
14f9c5c9 | 3145 | function (if any) that matches the types of the NARGS arguments in |
4c4b4cd2 PH |
3146 | ARGS. If CONTEXT_TYPE is non-null and there is at least one match |
3147 | that returns that type, then eliminate matches that don't. If | |
3148 | CONTEXT_TYPE is void and there is at least one match that does not | |
3149 | return void, eliminate all matches that do. | |
3150 | ||
14f9c5c9 AS |
3151 | Asks the user if there is more than one match remaining. Returns -1 |
3152 | if there is no such symbol or none is selected. NAME is used | |
4c4b4cd2 PH |
3153 | solely for messages. May re-arrange and modify SYMS in |
3154 | the process; the index returned is for the modified vector. */ | |
14f9c5c9 | 3155 | |
4c4b4cd2 PH |
3156 | static int |
3157 | ada_resolve_function (struct ada_symbol_info syms[], | |
3158 | int nsyms, struct value **args, int nargs, | |
3159 | const char *name, struct type *context_type) | |
14f9c5c9 AS |
3160 | { |
3161 | int k; | |
4c4b4cd2 | 3162 | int m; /* Number of hits */ |
d2e4a39e AS |
3163 | struct type *fallback; |
3164 | struct type *return_type; | |
14f9c5c9 AS |
3165 | |
3166 | return_type = context_type; | |
3167 | if (context_type == NULL) | |
3168 | fallback = builtin_type_void; | |
3169 | else | |
3170 | fallback = NULL; | |
3171 | ||
d2e4a39e | 3172 | m = 0; |
14f9c5c9 AS |
3173 | while (1) |
3174 | { | |
3175 | for (k = 0; k < nsyms; k += 1) | |
4c4b4cd2 | 3176 | { |
61ee279c | 3177 | struct type *type = ada_check_typedef (SYMBOL_TYPE (syms[k].sym)); |
4c4b4cd2 PH |
3178 | |
3179 | if (ada_args_match (syms[k].sym, args, nargs) | |
3180 | && return_match (type, return_type)) | |
3181 | { | |
3182 | syms[m] = syms[k]; | |
3183 | m += 1; | |
3184 | } | |
3185 | } | |
14f9c5c9 | 3186 | if (m > 0 || return_type == fallback) |
4c4b4cd2 | 3187 | break; |
14f9c5c9 | 3188 | else |
4c4b4cd2 | 3189 | return_type = fallback; |
14f9c5c9 AS |
3190 | } |
3191 | ||
3192 | if (m == 0) | |
3193 | return -1; | |
3194 | else if (m > 1) | |
3195 | { | |
323e0a4a | 3196 | printf_filtered (_("Multiple matches for %s\n"), name); |
4c4b4cd2 | 3197 | user_select_syms (syms, m, 1); |
14f9c5c9 AS |
3198 | return 0; |
3199 | } | |
3200 | return 0; | |
3201 | } | |
3202 | ||
4c4b4cd2 PH |
3203 | /* Returns true (non-zero) iff decoded name N0 should appear before N1 |
3204 | in a listing of choices during disambiguation (see sort_choices, below). | |
3205 | The idea is that overloadings of a subprogram name from the | |
3206 | same package should sort in their source order. We settle for ordering | |
3207 | such symbols by their trailing number (__N or $N). */ | |
3208 | ||
14f9c5c9 | 3209 | static int |
4c4b4cd2 | 3210 | encoded_ordered_before (char *N0, char *N1) |
14f9c5c9 AS |
3211 | { |
3212 | if (N1 == NULL) | |
3213 | return 0; | |
3214 | else if (N0 == NULL) | |
3215 | return 1; | |
3216 | else | |
3217 | { | |
3218 | int k0, k1; | |
d2e4a39e | 3219 | for (k0 = strlen (N0) - 1; k0 > 0 && isdigit (N0[k0]); k0 -= 1) |
4c4b4cd2 | 3220 | ; |
d2e4a39e | 3221 | for (k1 = strlen (N1) - 1; k1 > 0 && isdigit (N1[k1]); k1 -= 1) |
4c4b4cd2 | 3222 | ; |
d2e4a39e | 3223 | if ((N0[k0] == '_' || N0[k0] == '$') && N0[k0 + 1] != '\000' |
4c4b4cd2 PH |
3224 | && (N1[k1] == '_' || N1[k1] == '$') && N1[k1 + 1] != '\000') |
3225 | { | |
3226 | int n0, n1; | |
3227 | n0 = k0; | |
3228 | while (N0[n0] == '_' && n0 > 0 && N0[n0 - 1] == '_') | |
3229 | n0 -= 1; | |
3230 | n1 = k1; | |
3231 | while (N1[n1] == '_' && n1 > 0 && N1[n1 - 1] == '_') | |
3232 | n1 -= 1; | |
3233 | if (n0 == n1 && strncmp (N0, N1, n0) == 0) | |
3234 | return (atoi (N0 + k0 + 1) < atoi (N1 + k1 + 1)); | |
3235 | } | |
14f9c5c9 AS |
3236 | return (strcmp (N0, N1) < 0); |
3237 | } | |
3238 | } | |
d2e4a39e | 3239 | |
4c4b4cd2 PH |
3240 | /* Sort SYMS[0..NSYMS-1] to put the choices in a canonical order by the |
3241 | encoded names. */ | |
3242 | ||
d2e4a39e | 3243 | static void |
4c4b4cd2 | 3244 | sort_choices (struct ada_symbol_info syms[], int nsyms) |
14f9c5c9 | 3245 | { |
4c4b4cd2 | 3246 | int i; |
d2e4a39e | 3247 | for (i = 1; i < nsyms; i += 1) |
14f9c5c9 | 3248 | { |
4c4b4cd2 | 3249 | struct ada_symbol_info sym = syms[i]; |
14f9c5c9 AS |
3250 | int j; |
3251 | ||
d2e4a39e | 3252 | for (j = i - 1; j >= 0; j -= 1) |
4c4b4cd2 PH |
3253 | { |
3254 | if (encoded_ordered_before (SYMBOL_LINKAGE_NAME (syms[j].sym), | |
3255 | SYMBOL_LINKAGE_NAME (sym.sym))) | |
3256 | break; | |
3257 | syms[j + 1] = syms[j]; | |
3258 | } | |
d2e4a39e | 3259 | syms[j + 1] = sym; |
14f9c5c9 AS |
3260 | } |
3261 | } | |
3262 | ||
4c4b4cd2 PH |
3263 | /* Given a list of NSYMS symbols in SYMS, select up to MAX_RESULTS>0 |
3264 | by asking the user (if necessary), returning the number selected, | |
3265 | and setting the first elements of SYMS items. Error if no symbols | |
3266 | selected. */ | |
14f9c5c9 AS |
3267 | |
3268 | /* NOTE: Adapted from decode_line_2 in symtab.c, with which it ought | |
4c4b4cd2 | 3269 | to be re-integrated one of these days. */ |
14f9c5c9 AS |
3270 | |
3271 | int | |
4c4b4cd2 | 3272 | user_select_syms (struct ada_symbol_info *syms, int nsyms, int max_results) |
14f9c5c9 AS |
3273 | { |
3274 | int i; | |
d2e4a39e | 3275 | int *chosen = (int *) alloca (sizeof (int) * nsyms); |
14f9c5c9 AS |
3276 | int n_chosen; |
3277 | int first_choice = (max_results == 1) ? 1 : 2; | |
717d2f5a | 3278 | const char *select_mode = multiple_symbols_select_mode (); |
14f9c5c9 AS |
3279 | |
3280 | if (max_results < 1) | |
323e0a4a | 3281 | error (_("Request to select 0 symbols!")); |
14f9c5c9 AS |
3282 | if (nsyms <= 1) |
3283 | return nsyms; | |
3284 | ||
717d2f5a JB |
3285 | if (select_mode == multiple_symbols_cancel) |
3286 | error (_("\ | |
3287 | canceled because the command is ambiguous\n\ | |
3288 | See set/show multiple-symbol.")); | |
3289 | ||
3290 | /* If select_mode is "all", then return all possible symbols. | |
3291 | Only do that if more than one symbol can be selected, of course. | |
3292 | Otherwise, display the menu as usual. */ | |
3293 | if (select_mode == multiple_symbols_all && max_results > 1) | |
3294 | return nsyms; | |
3295 | ||
323e0a4a | 3296 | printf_unfiltered (_("[0] cancel\n")); |
14f9c5c9 | 3297 | if (max_results > 1) |
323e0a4a | 3298 | printf_unfiltered (_("[1] all\n")); |
14f9c5c9 | 3299 | |
4c4b4cd2 | 3300 | sort_choices (syms, nsyms); |
14f9c5c9 AS |
3301 | |
3302 | for (i = 0; i < nsyms; i += 1) | |
3303 | { | |
4c4b4cd2 PH |
3304 | if (syms[i].sym == NULL) |
3305 | continue; | |
3306 | ||
3307 | if (SYMBOL_CLASS (syms[i].sym) == LOC_BLOCK) | |
3308 | { | |
76a01679 JB |
3309 | struct symtab_and_line sal = |
3310 | find_function_start_sal (syms[i].sym, 1); | |
323e0a4a AC |
3311 | if (sal.symtab == NULL) |
3312 | printf_unfiltered (_("[%d] %s at <no source file available>:%d\n"), | |
3313 | i + first_choice, | |
3314 | SYMBOL_PRINT_NAME (syms[i].sym), | |
3315 | sal.line); | |
3316 | else | |
3317 | printf_unfiltered (_("[%d] %s at %s:%d\n"), i + first_choice, | |
3318 | SYMBOL_PRINT_NAME (syms[i].sym), | |
3319 | sal.symtab->filename, sal.line); | |
4c4b4cd2 PH |
3320 | continue; |
3321 | } | |
d2e4a39e | 3322 | else |
4c4b4cd2 PH |
3323 | { |
3324 | int is_enumeral = | |
3325 | (SYMBOL_CLASS (syms[i].sym) == LOC_CONST | |
3326 | && SYMBOL_TYPE (syms[i].sym) != NULL | |
3327 | && TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) == TYPE_CODE_ENUM); | |
3328 | struct symtab *symtab = symtab_for_sym (syms[i].sym); | |
3329 | ||
3330 | if (SYMBOL_LINE (syms[i].sym) != 0 && symtab != NULL) | |
323e0a4a | 3331 | printf_unfiltered (_("[%d] %s at %s:%d\n"), |
4c4b4cd2 PH |
3332 | i + first_choice, |
3333 | SYMBOL_PRINT_NAME (syms[i].sym), | |
3334 | symtab->filename, SYMBOL_LINE (syms[i].sym)); | |
76a01679 JB |
3335 | else if (is_enumeral |
3336 | && TYPE_NAME (SYMBOL_TYPE (syms[i].sym)) != NULL) | |
4c4b4cd2 | 3337 | { |
a3f17187 | 3338 | printf_unfiltered (("[%d] "), i + first_choice); |
76a01679 JB |
3339 | ada_print_type (SYMBOL_TYPE (syms[i].sym), NULL, |
3340 | gdb_stdout, -1, 0); | |
323e0a4a | 3341 | printf_unfiltered (_("'(%s) (enumeral)\n"), |
4c4b4cd2 PH |
3342 | SYMBOL_PRINT_NAME (syms[i].sym)); |
3343 | } | |
3344 | else if (symtab != NULL) | |
3345 | printf_unfiltered (is_enumeral | |
323e0a4a AC |
3346 | ? _("[%d] %s in %s (enumeral)\n") |
3347 | : _("[%d] %s at %s:?\n"), | |
4c4b4cd2 PH |
3348 | i + first_choice, |
3349 | SYMBOL_PRINT_NAME (syms[i].sym), | |
3350 | symtab->filename); | |
3351 | else | |
3352 | printf_unfiltered (is_enumeral | |
323e0a4a AC |
3353 | ? _("[%d] %s (enumeral)\n") |
3354 | : _("[%d] %s at ?\n"), | |
4c4b4cd2 PH |
3355 | i + first_choice, |
3356 | SYMBOL_PRINT_NAME (syms[i].sym)); | |
3357 | } | |
14f9c5c9 | 3358 | } |
d2e4a39e | 3359 | |
14f9c5c9 | 3360 | n_chosen = get_selections (chosen, nsyms, max_results, max_results > 1, |
4c4b4cd2 | 3361 | "overload-choice"); |
14f9c5c9 AS |
3362 | |
3363 | for (i = 0; i < n_chosen; i += 1) | |
4c4b4cd2 | 3364 | syms[i] = syms[chosen[i]]; |
14f9c5c9 AS |
3365 | |
3366 | return n_chosen; | |
3367 | } | |
3368 | ||
3369 | /* Read and validate a set of numeric choices from the user in the | |
4c4b4cd2 | 3370 | range 0 .. N_CHOICES-1. Place the results in increasing |
14f9c5c9 AS |
3371 | order in CHOICES[0 .. N-1], and return N. |
3372 | ||
3373 | The user types choices as a sequence of numbers on one line | |
3374 | separated by blanks, encoding them as follows: | |
3375 | ||
4c4b4cd2 | 3376 | + A choice of 0 means to cancel the selection, throwing an error. |
14f9c5c9 AS |
3377 | + If IS_ALL_CHOICE, a choice of 1 selects the entire set 0 .. N_CHOICES-1. |
3378 | + The user chooses k by typing k+IS_ALL_CHOICE+1. | |
3379 | ||
4c4b4cd2 | 3380 | The user is not allowed to choose more than MAX_RESULTS values. |
14f9c5c9 AS |
3381 | |
3382 | ANNOTATION_SUFFIX, if present, is used to annotate the input | |
4c4b4cd2 | 3383 | prompts (for use with the -f switch). */ |
14f9c5c9 AS |
3384 | |
3385 | int | |
d2e4a39e | 3386 | get_selections (int *choices, int n_choices, int max_results, |
4c4b4cd2 | 3387 | int is_all_choice, char *annotation_suffix) |
14f9c5c9 | 3388 | { |
d2e4a39e | 3389 | char *args; |
0bcd0149 | 3390 | char *prompt; |
14f9c5c9 AS |
3391 | int n_chosen; |
3392 | int first_choice = is_all_choice ? 2 : 1; | |
d2e4a39e | 3393 | |
14f9c5c9 AS |
3394 | prompt = getenv ("PS2"); |
3395 | if (prompt == NULL) | |
0bcd0149 | 3396 | prompt = "> "; |
14f9c5c9 | 3397 | |
0bcd0149 | 3398 | args = command_line_input (prompt, 0, annotation_suffix); |
d2e4a39e | 3399 | |
14f9c5c9 | 3400 | if (args == NULL) |
323e0a4a | 3401 | error_no_arg (_("one or more choice numbers")); |
14f9c5c9 AS |
3402 | |
3403 | n_chosen = 0; | |
76a01679 | 3404 | |
4c4b4cd2 PH |
3405 | /* Set choices[0 .. n_chosen-1] to the users' choices in ascending |
3406 | order, as given in args. Choices are validated. */ | |
14f9c5c9 AS |
3407 | while (1) |
3408 | { | |
d2e4a39e | 3409 | char *args2; |
14f9c5c9 AS |
3410 | int choice, j; |
3411 | ||
3412 | while (isspace (*args)) | |
4c4b4cd2 | 3413 | args += 1; |
14f9c5c9 | 3414 | if (*args == '\0' && n_chosen == 0) |
323e0a4a | 3415 | error_no_arg (_("one or more choice numbers")); |
14f9c5c9 | 3416 | else if (*args == '\0') |
4c4b4cd2 | 3417 | break; |
14f9c5c9 AS |
3418 | |
3419 | choice = strtol (args, &args2, 10); | |
d2e4a39e | 3420 | if (args == args2 || choice < 0 |
4c4b4cd2 | 3421 | || choice > n_choices + first_choice - 1) |
323e0a4a | 3422 | error (_("Argument must be choice number")); |
14f9c5c9 AS |
3423 | args = args2; |
3424 | ||
d2e4a39e | 3425 | if (choice == 0) |
323e0a4a | 3426 | error (_("cancelled")); |
14f9c5c9 AS |
3427 | |
3428 | if (choice < first_choice) | |
4c4b4cd2 PH |
3429 | { |
3430 | n_chosen = n_choices; | |
3431 | for (j = 0; j < n_choices; j += 1) | |
3432 | choices[j] = j; | |
3433 | break; | |
3434 | } | |
14f9c5c9 AS |
3435 | choice -= first_choice; |
3436 | ||
d2e4a39e | 3437 | for (j = n_chosen - 1; j >= 0 && choice < choices[j]; j -= 1) |
4c4b4cd2 PH |
3438 | { |
3439 | } | |
14f9c5c9 AS |
3440 | |
3441 | if (j < 0 || choice != choices[j]) | |
4c4b4cd2 PH |
3442 | { |
3443 | int k; | |
3444 | for (k = n_chosen - 1; k > j; k -= 1) | |
3445 | choices[k + 1] = choices[k]; | |
3446 | choices[j + 1] = choice; | |
3447 | n_chosen += 1; | |
3448 | } | |
14f9c5c9 AS |
3449 | } |
3450 | ||
3451 | if (n_chosen > max_results) | |
323e0a4a | 3452 | error (_("Select no more than %d of the above"), max_results); |
d2e4a39e | 3453 | |
14f9c5c9 AS |
3454 | return n_chosen; |
3455 | } | |
3456 | ||
4c4b4cd2 PH |
3457 | /* Replace the operator of length OPLEN at position PC in *EXPP with a call |
3458 | on the function identified by SYM and BLOCK, and taking NARGS | |
3459 | arguments. Update *EXPP as needed to hold more space. */ | |
14f9c5c9 AS |
3460 | |
3461 | static void | |
d2e4a39e | 3462 | replace_operator_with_call (struct expression **expp, int pc, int nargs, |
4c4b4cd2 PH |
3463 | int oplen, struct symbol *sym, |
3464 | struct block *block) | |
14f9c5c9 AS |
3465 | { |
3466 | /* A new expression, with 6 more elements (3 for funcall, 4 for function | |
4c4b4cd2 | 3467 | symbol, -oplen for operator being replaced). */ |
d2e4a39e | 3468 | struct expression *newexp = (struct expression *) |
14f9c5c9 | 3469 | xmalloc (sizeof (struct expression) |
4c4b4cd2 | 3470 | + EXP_ELEM_TO_BYTES ((*expp)->nelts + 7 - oplen)); |
d2e4a39e | 3471 | struct expression *exp = *expp; |
14f9c5c9 AS |
3472 | |
3473 | newexp->nelts = exp->nelts + 7 - oplen; | |
3474 | newexp->language_defn = exp->language_defn; | |
3475 | memcpy (newexp->elts, exp->elts, EXP_ELEM_TO_BYTES (pc)); | |
d2e4a39e | 3476 | memcpy (newexp->elts + pc + 7, exp->elts + pc + oplen, |
4c4b4cd2 | 3477 | EXP_ELEM_TO_BYTES (exp->nelts - pc - oplen)); |
14f9c5c9 AS |
3478 | |
3479 | newexp->elts[pc].opcode = newexp->elts[pc + 2].opcode = OP_FUNCALL; | |
3480 | newexp->elts[pc + 1].longconst = (LONGEST) nargs; | |
3481 | ||
3482 | newexp->elts[pc + 3].opcode = newexp->elts[pc + 6].opcode = OP_VAR_VALUE; | |
3483 | newexp->elts[pc + 4].block = block; | |
3484 | newexp->elts[pc + 5].symbol = sym; | |
3485 | ||
3486 | *expp = newexp; | |
aacb1f0a | 3487 | xfree (exp); |
d2e4a39e | 3488 | } |
14f9c5c9 AS |
3489 | |
3490 | /* Type-class predicates */ | |
3491 | ||
4c4b4cd2 PH |
3492 | /* True iff TYPE is numeric (i.e., an INT, RANGE (of numeric type), |
3493 | or FLOAT). */ | |
14f9c5c9 AS |
3494 | |
3495 | static int | |
d2e4a39e | 3496 | numeric_type_p (struct type *type) |
14f9c5c9 AS |
3497 | { |
3498 | if (type == NULL) | |
3499 | return 0; | |
d2e4a39e AS |
3500 | else |
3501 | { | |
3502 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3503 | { |
3504 | case TYPE_CODE_INT: | |
3505 | case TYPE_CODE_FLT: | |
3506 | return 1; | |
3507 | case TYPE_CODE_RANGE: | |
3508 | return (type == TYPE_TARGET_TYPE (type) | |
3509 | || numeric_type_p (TYPE_TARGET_TYPE (type))); | |
3510 | default: | |
3511 | return 0; | |
3512 | } | |
d2e4a39e | 3513 | } |
14f9c5c9 AS |
3514 | } |
3515 | ||
4c4b4cd2 | 3516 | /* True iff TYPE is integral (an INT or RANGE of INTs). */ |
14f9c5c9 AS |
3517 | |
3518 | static int | |
d2e4a39e | 3519 | integer_type_p (struct type *type) |
14f9c5c9 AS |
3520 | { |
3521 | if (type == NULL) | |
3522 | return 0; | |
d2e4a39e AS |
3523 | else |
3524 | { | |
3525 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3526 | { |
3527 | case TYPE_CODE_INT: | |
3528 | return 1; | |
3529 | case TYPE_CODE_RANGE: | |
3530 | return (type == TYPE_TARGET_TYPE (type) | |
3531 | || integer_type_p (TYPE_TARGET_TYPE (type))); | |
3532 | default: | |
3533 | return 0; | |
3534 | } | |
d2e4a39e | 3535 | } |
14f9c5c9 AS |
3536 | } |
3537 | ||
4c4b4cd2 | 3538 | /* True iff TYPE is scalar (INT, RANGE, FLOAT, ENUM). */ |
14f9c5c9 AS |
3539 | |
3540 | static int | |
d2e4a39e | 3541 | scalar_type_p (struct type *type) |
14f9c5c9 AS |
3542 | { |
3543 | if (type == NULL) | |
3544 | return 0; | |
d2e4a39e AS |
3545 | else |
3546 | { | |
3547 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3548 | { |
3549 | case TYPE_CODE_INT: | |
3550 | case TYPE_CODE_RANGE: | |
3551 | case TYPE_CODE_ENUM: | |
3552 | case TYPE_CODE_FLT: | |
3553 | return 1; | |
3554 | default: | |
3555 | return 0; | |
3556 | } | |
d2e4a39e | 3557 | } |
14f9c5c9 AS |
3558 | } |
3559 | ||
4c4b4cd2 | 3560 | /* True iff TYPE is discrete (INT, RANGE, ENUM). */ |
14f9c5c9 AS |
3561 | |
3562 | static int | |
d2e4a39e | 3563 | discrete_type_p (struct type *type) |
14f9c5c9 AS |
3564 | { |
3565 | if (type == NULL) | |
3566 | return 0; | |
d2e4a39e AS |
3567 | else |
3568 | { | |
3569 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3570 | { |
3571 | case TYPE_CODE_INT: | |
3572 | case TYPE_CODE_RANGE: | |
3573 | case TYPE_CODE_ENUM: | |
3574 | return 1; | |
3575 | default: | |
3576 | return 0; | |
3577 | } | |
d2e4a39e | 3578 | } |
14f9c5c9 AS |
3579 | } |
3580 | ||
4c4b4cd2 PH |
3581 | /* Returns non-zero if OP with operands in the vector ARGS could be |
3582 | a user-defined function. Errs on the side of pre-defined operators | |
3583 | (i.e., result 0). */ | |
14f9c5c9 AS |
3584 | |
3585 | static int | |
d2e4a39e | 3586 | possible_user_operator_p (enum exp_opcode op, struct value *args[]) |
14f9c5c9 | 3587 | { |
76a01679 | 3588 | struct type *type0 = |
df407dfe | 3589 | (args[0] == NULL) ? NULL : ada_check_typedef (value_type (args[0])); |
d2e4a39e | 3590 | struct type *type1 = |
df407dfe | 3591 | (args[1] == NULL) ? NULL : ada_check_typedef (value_type (args[1])); |
d2e4a39e | 3592 | |
4c4b4cd2 PH |
3593 | if (type0 == NULL) |
3594 | return 0; | |
3595 | ||
14f9c5c9 AS |
3596 | switch (op) |
3597 | { | |
3598 | default: | |
3599 | return 0; | |
3600 | ||
3601 | case BINOP_ADD: | |
3602 | case BINOP_SUB: | |
3603 | case BINOP_MUL: | |
3604 | case BINOP_DIV: | |
d2e4a39e | 3605 | return (!(numeric_type_p (type0) && numeric_type_p (type1))); |
14f9c5c9 AS |
3606 | |
3607 | case BINOP_REM: | |
3608 | case BINOP_MOD: | |
3609 | case BINOP_BITWISE_AND: | |
3610 | case BINOP_BITWISE_IOR: | |
3611 | case BINOP_BITWISE_XOR: | |
d2e4a39e | 3612 | return (!(integer_type_p (type0) && integer_type_p (type1))); |
14f9c5c9 AS |
3613 | |
3614 | case BINOP_EQUAL: | |
3615 | case BINOP_NOTEQUAL: | |
3616 | case BINOP_LESS: | |
3617 | case BINOP_GTR: | |
3618 | case BINOP_LEQ: | |
3619 | case BINOP_GEQ: | |
d2e4a39e | 3620 | return (!(scalar_type_p (type0) && scalar_type_p (type1))); |
14f9c5c9 AS |
3621 | |
3622 | case BINOP_CONCAT: | |
ee90b9ab | 3623 | return !ada_is_array_type (type0) || !ada_is_array_type (type1); |
14f9c5c9 AS |
3624 | |
3625 | case BINOP_EXP: | |
d2e4a39e | 3626 | return (!(numeric_type_p (type0) && integer_type_p (type1))); |
14f9c5c9 AS |
3627 | |
3628 | case UNOP_NEG: | |
3629 | case UNOP_PLUS: | |
3630 | case UNOP_LOGICAL_NOT: | |
d2e4a39e AS |
3631 | case UNOP_ABS: |
3632 | return (!numeric_type_p (type0)); | |
14f9c5c9 AS |
3633 | |
3634 | } | |
3635 | } | |
3636 | \f | |
4c4b4cd2 | 3637 | /* Renaming */ |
14f9c5c9 | 3638 | |
aeb5907d JB |
3639 | /* NOTES: |
3640 | ||
3641 | 1. In the following, we assume that a renaming type's name may | |
3642 | have an ___XD suffix. It would be nice if this went away at some | |
3643 | point. | |
3644 | 2. We handle both the (old) purely type-based representation of | |
3645 | renamings and the (new) variable-based encoding. At some point, | |
3646 | it is devoutly to be hoped that the former goes away | |
3647 | (FIXME: hilfinger-2007-07-09). | |
3648 | 3. Subprogram renamings are not implemented, although the XRS | |
3649 | suffix is recognized (FIXME: hilfinger-2007-07-09). */ | |
3650 | ||
3651 | /* If SYM encodes a renaming, | |
3652 | ||
3653 | <renaming> renames <renamed entity>, | |
3654 | ||
3655 | sets *LEN to the length of the renamed entity's name, | |
3656 | *RENAMED_ENTITY to that name (not null-terminated), and *RENAMING_EXPR to | |
3657 | the string describing the subcomponent selected from the renamed | |
3658 | entity. Returns ADA_NOT_RENAMING if SYM does not encode a renaming | |
3659 | (in which case, the values of *RENAMED_ENTITY, *LEN, and *RENAMING_EXPR | |
3660 | are undefined). Otherwise, returns a value indicating the category | |
3661 | of entity renamed: an object (ADA_OBJECT_RENAMING), exception | |
3662 | (ADA_EXCEPTION_RENAMING), package (ADA_PACKAGE_RENAMING), or | |
3663 | subprogram (ADA_SUBPROGRAM_RENAMING). Does no allocation; the | |
3664 | strings returned in *RENAMED_ENTITY and *RENAMING_EXPR should not be | |
3665 | deallocated. The values of RENAMED_ENTITY, LEN, or RENAMING_EXPR | |
3666 | may be NULL, in which case they are not assigned. | |
3667 | ||
3668 | [Currently, however, GCC does not generate subprogram renamings.] */ | |
3669 | ||
3670 | enum ada_renaming_category | |
3671 | ada_parse_renaming (struct symbol *sym, | |
3672 | const char **renamed_entity, int *len, | |
3673 | const char **renaming_expr) | |
3674 | { | |
3675 | enum ada_renaming_category kind; | |
3676 | const char *info; | |
3677 | const char *suffix; | |
3678 | ||
3679 | if (sym == NULL) | |
3680 | return ADA_NOT_RENAMING; | |
3681 | switch (SYMBOL_CLASS (sym)) | |
14f9c5c9 | 3682 | { |
aeb5907d JB |
3683 | default: |
3684 | return ADA_NOT_RENAMING; | |
3685 | case LOC_TYPEDEF: | |
3686 | return parse_old_style_renaming (SYMBOL_TYPE (sym), | |
3687 | renamed_entity, len, renaming_expr); | |
3688 | case LOC_LOCAL: | |
3689 | case LOC_STATIC: | |
3690 | case LOC_COMPUTED: | |
3691 | case LOC_OPTIMIZED_OUT: | |
3692 | info = strstr (SYMBOL_LINKAGE_NAME (sym), "___XR"); | |
3693 | if (info == NULL) | |
3694 | return ADA_NOT_RENAMING; | |
3695 | switch (info[5]) | |
3696 | { | |
3697 | case '_': | |
3698 | kind = ADA_OBJECT_RENAMING; | |
3699 | info += 6; | |
3700 | break; | |
3701 | case 'E': | |
3702 | kind = ADA_EXCEPTION_RENAMING; | |
3703 | info += 7; | |
3704 | break; | |
3705 | case 'P': | |
3706 | kind = ADA_PACKAGE_RENAMING; | |
3707 | info += 7; | |
3708 | break; | |
3709 | case 'S': | |
3710 | kind = ADA_SUBPROGRAM_RENAMING; | |
3711 | info += 7; | |
3712 | break; | |
3713 | default: | |
3714 | return ADA_NOT_RENAMING; | |
3715 | } | |
14f9c5c9 | 3716 | } |
4c4b4cd2 | 3717 | |
aeb5907d JB |
3718 | if (renamed_entity != NULL) |
3719 | *renamed_entity = info; | |
3720 | suffix = strstr (info, "___XE"); | |
3721 | if (suffix == NULL || suffix == info) | |
3722 | return ADA_NOT_RENAMING; | |
3723 | if (len != NULL) | |
3724 | *len = strlen (info) - strlen (suffix); | |
3725 | suffix += 5; | |
3726 | if (renaming_expr != NULL) | |
3727 | *renaming_expr = suffix; | |
3728 | return kind; | |
3729 | } | |
3730 | ||
3731 | /* Assuming TYPE encodes a renaming according to the old encoding in | |
3732 | exp_dbug.ads, returns details of that renaming in *RENAMED_ENTITY, | |
3733 | *LEN, and *RENAMING_EXPR, as for ada_parse_renaming, above. Returns | |
3734 | ADA_NOT_RENAMING otherwise. */ | |
3735 | static enum ada_renaming_category | |
3736 | parse_old_style_renaming (struct type *type, | |
3737 | const char **renamed_entity, int *len, | |
3738 | const char **renaming_expr) | |
3739 | { | |
3740 | enum ada_renaming_category kind; | |
3741 | const char *name; | |
3742 | const char *info; | |
3743 | const char *suffix; | |
14f9c5c9 | 3744 | |
aeb5907d JB |
3745 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_ENUM |
3746 | || TYPE_NFIELDS (type) != 1) | |
3747 | return ADA_NOT_RENAMING; | |
14f9c5c9 | 3748 | |
aeb5907d JB |
3749 | name = type_name_no_tag (type); |
3750 | if (name == NULL) | |
3751 | return ADA_NOT_RENAMING; | |
3752 | ||
3753 | name = strstr (name, "___XR"); | |
3754 | if (name == NULL) | |
3755 | return ADA_NOT_RENAMING; | |
3756 | switch (name[5]) | |
3757 | { | |
3758 | case '\0': | |
3759 | case '_': | |
3760 | kind = ADA_OBJECT_RENAMING; | |
3761 | break; | |
3762 | case 'E': | |
3763 | kind = ADA_EXCEPTION_RENAMING; | |
3764 | break; | |
3765 | case 'P': | |
3766 | kind = ADA_PACKAGE_RENAMING; | |
3767 | break; | |
3768 | case 'S': | |
3769 | kind = ADA_SUBPROGRAM_RENAMING; | |
3770 | break; | |
3771 | default: | |
3772 | return ADA_NOT_RENAMING; | |
3773 | } | |
14f9c5c9 | 3774 | |
aeb5907d JB |
3775 | info = TYPE_FIELD_NAME (type, 0); |
3776 | if (info == NULL) | |
3777 | return ADA_NOT_RENAMING; | |
3778 | if (renamed_entity != NULL) | |
3779 | *renamed_entity = info; | |
3780 | suffix = strstr (info, "___XE"); | |
3781 | if (renaming_expr != NULL) | |
3782 | *renaming_expr = suffix + 5; | |
3783 | if (suffix == NULL || suffix == info) | |
3784 | return ADA_NOT_RENAMING; | |
3785 | if (len != NULL) | |
3786 | *len = suffix - info; | |
3787 | return kind; | |
3788 | } | |
52ce6436 | 3789 | |
14f9c5c9 | 3790 | \f |
d2e4a39e | 3791 | |
4c4b4cd2 | 3792 | /* Evaluation: Function Calls */ |
14f9c5c9 | 3793 | |
4c4b4cd2 PH |
3794 | /* Return an lvalue containing the value VAL. This is the identity on |
3795 | lvalues, and otherwise has the side-effect of pushing a copy of VAL | |
3796 | on the stack, using and updating *SP as the stack pointer, and | |
3797 | returning an lvalue whose VALUE_ADDRESS points to the copy. */ | |
14f9c5c9 | 3798 | |
d2e4a39e | 3799 | static struct value * |
4c4b4cd2 | 3800 | ensure_lval (struct value *val, CORE_ADDR *sp) |
14f9c5c9 | 3801 | { |
c3e5cd34 PH |
3802 | if (! VALUE_LVAL (val)) |
3803 | { | |
df407dfe | 3804 | int len = TYPE_LENGTH (ada_check_typedef (value_type (val))); |
c3e5cd34 PH |
3805 | |
3806 | /* The following is taken from the structure-return code in | |
3807 | call_function_by_hand. FIXME: Therefore, some refactoring seems | |
3808 | indicated. */ | |
4d1e7dd1 | 3809 | if (gdbarch_inner_than (current_gdbarch, 1, 2)) |
c3e5cd34 PH |
3810 | { |
3811 | /* Stack grows downward. Align SP and VALUE_ADDRESS (val) after | |
3812 | reserving sufficient space. */ | |
3813 | *sp -= len; | |
3814 | if (gdbarch_frame_align_p (current_gdbarch)) | |
3815 | *sp = gdbarch_frame_align (current_gdbarch, *sp); | |
3816 | VALUE_ADDRESS (val) = *sp; | |
3817 | } | |
3818 | else | |
3819 | { | |
3820 | /* Stack grows upward. Align the frame, allocate space, and | |
3821 | then again, re-align the frame. */ | |
3822 | if (gdbarch_frame_align_p (current_gdbarch)) | |
3823 | *sp = gdbarch_frame_align (current_gdbarch, *sp); | |
3824 | VALUE_ADDRESS (val) = *sp; | |
3825 | *sp += len; | |
3826 | if (gdbarch_frame_align_p (current_gdbarch)) | |
3827 | *sp = gdbarch_frame_align (current_gdbarch, *sp); | |
3828 | } | |
a84a8a0d | 3829 | VALUE_LVAL (val) = lval_memory; |
14f9c5c9 | 3830 | |
990a07ab | 3831 | write_memory (VALUE_ADDRESS (val), value_contents_raw (val), len); |
c3e5cd34 | 3832 | } |
14f9c5c9 AS |
3833 | |
3834 | return val; | |
3835 | } | |
3836 | ||
3837 | /* Return the value ACTUAL, converted to be an appropriate value for a | |
3838 | formal of type FORMAL_TYPE. Use *SP as a stack pointer for | |
3839 | allocating any necessary descriptors (fat pointers), or copies of | |
4c4b4cd2 | 3840 | values not residing in memory, updating it as needed. */ |
14f9c5c9 | 3841 | |
a93c0eb6 JB |
3842 | struct value * |
3843 | ada_convert_actual (struct value *actual, struct type *formal_type0, | |
3844 | CORE_ADDR *sp) | |
14f9c5c9 | 3845 | { |
df407dfe | 3846 | struct type *actual_type = ada_check_typedef (value_type (actual)); |
61ee279c | 3847 | struct type *formal_type = ada_check_typedef (formal_type0); |
d2e4a39e AS |
3848 | struct type *formal_target = |
3849 | TYPE_CODE (formal_type) == TYPE_CODE_PTR | |
61ee279c | 3850 | ? ada_check_typedef (TYPE_TARGET_TYPE (formal_type)) : formal_type; |
d2e4a39e AS |
3851 | struct type *actual_target = |
3852 | TYPE_CODE (actual_type) == TYPE_CODE_PTR | |
61ee279c | 3853 | ? ada_check_typedef (TYPE_TARGET_TYPE (actual_type)) : actual_type; |
14f9c5c9 | 3854 | |
4c4b4cd2 | 3855 | if (ada_is_array_descriptor_type (formal_target) |
14f9c5c9 AS |
3856 | && TYPE_CODE (actual_target) == TYPE_CODE_ARRAY) |
3857 | return make_array_descriptor (formal_type, actual, sp); | |
a84a8a0d JB |
3858 | else if (TYPE_CODE (formal_type) == TYPE_CODE_PTR |
3859 | || TYPE_CODE (formal_type) == TYPE_CODE_REF) | |
14f9c5c9 | 3860 | { |
a84a8a0d | 3861 | struct value *result; |
14f9c5c9 | 3862 | if (TYPE_CODE (formal_target) == TYPE_CODE_ARRAY |
4c4b4cd2 | 3863 | && ada_is_array_descriptor_type (actual_target)) |
a84a8a0d | 3864 | result = desc_data (actual); |
14f9c5c9 | 3865 | else if (TYPE_CODE (actual_type) != TYPE_CODE_PTR) |
4c4b4cd2 PH |
3866 | { |
3867 | if (VALUE_LVAL (actual) != lval_memory) | |
3868 | { | |
3869 | struct value *val; | |
df407dfe | 3870 | actual_type = ada_check_typedef (value_type (actual)); |
4c4b4cd2 | 3871 | val = allocate_value (actual_type); |
990a07ab | 3872 | memcpy ((char *) value_contents_raw (val), |
0fd88904 | 3873 | (char *) value_contents (actual), |
4c4b4cd2 PH |
3874 | TYPE_LENGTH (actual_type)); |
3875 | actual = ensure_lval (val, sp); | |
3876 | } | |
a84a8a0d | 3877 | result = value_addr (actual); |
4c4b4cd2 | 3878 | } |
a84a8a0d JB |
3879 | else |
3880 | return actual; | |
3881 | return value_cast_pointers (formal_type, result); | |
14f9c5c9 AS |
3882 | } |
3883 | else if (TYPE_CODE (actual_type) == TYPE_CODE_PTR) | |
3884 | return ada_value_ind (actual); | |
3885 | ||
3886 | return actual; | |
3887 | } | |
3888 | ||
3889 | ||
4c4b4cd2 PH |
3890 | /* Push a descriptor of type TYPE for array value ARR on the stack at |
3891 | *SP, updating *SP to reflect the new descriptor. Return either | |
14f9c5c9 | 3892 | an lvalue representing the new descriptor, or (if TYPE is a pointer- |
4c4b4cd2 PH |
3893 | to-descriptor type rather than a descriptor type), a struct value * |
3894 | representing a pointer to this descriptor. */ | |
14f9c5c9 | 3895 | |
d2e4a39e AS |
3896 | static struct value * |
3897 | make_array_descriptor (struct type *type, struct value *arr, CORE_ADDR *sp) | |
14f9c5c9 | 3898 | { |
d2e4a39e AS |
3899 | struct type *bounds_type = desc_bounds_type (type); |
3900 | struct type *desc_type = desc_base_type (type); | |
3901 | struct value *descriptor = allocate_value (desc_type); | |
3902 | struct value *bounds = allocate_value (bounds_type); | |
14f9c5c9 | 3903 | int i; |
d2e4a39e | 3904 | |
df407dfe | 3905 | for (i = ada_array_arity (ada_check_typedef (value_type (arr))); i > 0; i -= 1) |
14f9c5c9 | 3906 | { |
0fd88904 | 3907 | modify_general_field (value_contents_writeable (bounds), |
4c4b4cd2 PH |
3908 | value_as_long (ada_array_bound (arr, i, 0)), |
3909 | desc_bound_bitpos (bounds_type, i, 0), | |
3910 | desc_bound_bitsize (bounds_type, i, 0)); | |
0fd88904 | 3911 | modify_general_field (value_contents_writeable (bounds), |
4c4b4cd2 PH |
3912 | value_as_long (ada_array_bound (arr, i, 1)), |
3913 | desc_bound_bitpos (bounds_type, i, 1), | |
3914 | desc_bound_bitsize (bounds_type, i, 1)); | |
14f9c5c9 | 3915 | } |
d2e4a39e | 3916 | |
4c4b4cd2 | 3917 | bounds = ensure_lval (bounds, sp); |
d2e4a39e | 3918 | |
0fd88904 | 3919 | modify_general_field (value_contents_writeable (descriptor), |
76a01679 JB |
3920 | VALUE_ADDRESS (ensure_lval (arr, sp)), |
3921 | fat_pntr_data_bitpos (desc_type), | |
3922 | fat_pntr_data_bitsize (desc_type)); | |
4c4b4cd2 | 3923 | |
0fd88904 | 3924 | modify_general_field (value_contents_writeable (descriptor), |
4c4b4cd2 PH |
3925 | VALUE_ADDRESS (bounds), |
3926 | fat_pntr_bounds_bitpos (desc_type), | |
3927 | fat_pntr_bounds_bitsize (desc_type)); | |
14f9c5c9 | 3928 | |
4c4b4cd2 | 3929 | descriptor = ensure_lval (descriptor, sp); |
14f9c5c9 AS |
3930 | |
3931 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
3932 | return value_addr (descriptor); | |
3933 | else | |
3934 | return descriptor; | |
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, | |
2570f2b7 | 3942 | struct symbol **sym, struct block **block) |
96d887e8 PH |
3943 | { |
3944 | return 0; | |
3945 | } | |
3946 | ||
3947 | static void | |
3948 | cache_symbol (const char *name, domain_enum namespace, struct symbol *sym, | |
2570f2b7 | 3949 | struct block *block) |
96d887e8 PH |
3950 | { |
3951 | } | |
4c4b4cd2 PH |
3952 | \f |
3953 | /* Symbol Lookup */ | |
3954 | ||
3955 | /* Return the result of a standard (literal, C-like) lookup of NAME in | |
3956 | given DOMAIN, visible from lexical block BLOCK. */ | |
3957 | ||
3958 | static struct symbol * | |
3959 | standard_lookup (const char *name, const struct block *block, | |
3960 | domain_enum domain) | |
3961 | { | |
3962 | struct symbol *sym; | |
4c4b4cd2 | 3963 | |
2570f2b7 | 3964 | if (lookup_cached_symbol (name, domain, &sym, NULL)) |
4c4b4cd2 | 3965 | return sym; |
2570f2b7 UW |
3966 | sym = lookup_symbol_in_language (name, block, domain, language_c, 0); |
3967 | cache_symbol (name, domain, sym, block_found); | |
4c4b4cd2 PH |
3968 | return sym; |
3969 | } | |
3970 | ||
3971 | ||
3972 | /* Non-zero iff there is at least one non-function/non-enumeral symbol | |
3973 | in the symbol fields of SYMS[0..N-1]. We treat enumerals as functions, | |
3974 | since they contend in overloading in the same way. */ | |
3975 | static int | |
3976 | is_nonfunction (struct ada_symbol_info syms[], int n) | |
3977 | { | |
3978 | int i; | |
3979 | ||
3980 | for (i = 0; i < n; i += 1) | |
3981 | if (TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) != TYPE_CODE_FUNC | |
3982 | && (TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) != TYPE_CODE_ENUM | |
3983 | || SYMBOL_CLASS (syms[i].sym) != LOC_CONST)) | |
14f9c5c9 AS |
3984 | return 1; |
3985 | ||
3986 | return 0; | |
3987 | } | |
3988 | ||
3989 | /* If true (non-zero), then TYPE0 and TYPE1 represent equivalent | |
4c4b4cd2 | 3990 | struct types. Otherwise, they may not. */ |
14f9c5c9 AS |
3991 | |
3992 | static int | |
d2e4a39e | 3993 | equiv_types (struct type *type0, struct type *type1) |
14f9c5c9 | 3994 | { |
d2e4a39e | 3995 | if (type0 == type1) |
14f9c5c9 | 3996 | return 1; |
d2e4a39e | 3997 | if (type0 == NULL || type1 == NULL |
14f9c5c9 AS |
3998 | || TYPE_CODE (type0) != TYPE_CODE (type1)) |
3999 | return 0; | |
d2e4a39e | 4000 | if ((TYPE_CODE (type0) == TYPE_CODE_STRUCT |
14f9c5c9 AS |
4001 | || TYPE_CODE (type0) == TYPE_CODE_ENUM) |
4002 | && ada_type_name (type0) != NULL && ada_type_name (type1) != NULL | |
4c4b4cd2 | 4003 | && strcmp (ada_type_name (type0), ada_type_name (type1)) == 0) |
14f9c5c9 | 4004 | return 1; |
d2e4a39e | 4005 | |
14f9c5c9 AS |
4006 | return 0; |
4007 | } | |
4008 | ||
4009 | /* True iff SYM0 represents the same entity as SYM1, or one that is | |
4c4b4cd2 | 4010 | no more defined than that of SYM1. */ |
14f9c5c9 AS |
4011 | |
4012 | static int | |
d2e4a39e | 4013 | lesseq_defined_than (struct symbol *sym0, struct symbol *sym1) |
14f9c5c9 AS |
4014 | { |
4015 | if (sym0 == sym1) | |
4016 | return 1; | |
176620f1 | 4017 | if (SYMBOL_DOMAIN (sym0) != SYMBOL_DOMAIN (sym1) |
14f9c5c9 AS |
4018 | || SYMBOL_CLASS (sym0) != SYMBOL_CLASS (sym1)) |
4019 | return 0; | |
4020 | ||
d2e4a39e | 4021 | switch (SYMBOL_CLASS (sym0)) |
14f9c5c9 AS |
4022 | { |
4023 | case LOC_UNDEF: | |
4024 | return 1; | |
4025 | case LOC_TYPEDEF: | |
4026 | { | |
4c4b4cd2 PH |
4027 | struct type *type0 = SYMBOL_TYPE (sym0); |
4028 | struct type *type1 = SYMBOL_TYPE (sym1); | |
4029 | char *name0 = SYMBOL_LINKAGE_NAME (sym0); | |
4030 | char *name1 = SYMBOL_LINKAGE_NAME (sym1); | |
4031 | int len0 = strlen (name0); | |
4032 | return | |
4033 | TYPE_CODE (type0) == TYPE_CODE (type1) | |
4034 | && (equiv_types (type0, type1) | |
4035 | || (len0 < strlen (name1) && strncmp (name0, name1, len0) == 0 | |
4036 | && strncmp (name1 + len0, "___XV", 5) == 0)); | |
14f9c5c9 AS |
4037 | } |
4038 | case LOC_CONST: | |
4039 | return SYMBOL_VALUE (sym0) == SYMBOL_VALUE (sym1) | |
4c4b4cd2 | 4040 | && equiv_types (SYMBOL_TYPE (sym0), SYMBOL_TYPE (sym1)); |
d2e4a39e AS |
4041 | default: |
4042 | return 0; | |
14f9c5c9 AS |
4043 | } |
4044 | } | |
4045 | ||
4c4b4cd2 PH |
4046 | /* Append (SYM,BLOCK,SYMTAB) to the end of the array of struct ada_symbol_info |
4047 | records in OBSTACKP. Do nothing if SYM is a duplicate. */ | |
14f9c5c9 AS |
4048 | |
4049 | static void | |
76a01679 JB |
4050 | add_defn_to_vec (struct obstack *obstackp, |
4051 | struct symbol *sym, | |
2570f2b7 | 4052 | struct block *block) |
14f9c5c9 AS |
4053 | { |
4054 | int i; | |
4055 | size_t tmp; | |
4c4b4cd2 | 4056 | struct ada_symbol_info *prevDefns = defns_collected (obstackp, 0); |
14f9c5c9 | 4057 | |
529cad9c PH |
4058 | /* Do not try to complete stub types, as the debugger is probably |
4059 | already scanning all symbols matching a certain name at the | |
4060 | time when this function is called. Trying to replace the stub | |
4061 | type by its associated full type will cause us to restart a scan | |
4062 | which may lead to an infinite recursion. Instead, the client | |
4063 | collecting the matching symbols will end up collecting several | |
4064 | matches, with at least one of them complete. It can then filter | |
4065 | out the stub ones if needed. */ | |
4066 | ||
4c4b4cd2 PH |
4067 | for (i = num_defns_collected (obstackp) - 1; i >= 0; i -= 1) |
4068 | { | |
4069 | if (lesseq_defined_than (sym, prevDefns[i].sym)) | |
4070 | return; | |
4071 | else if (lesseq_defined_than (prevDefns[i].sym, sym)) | |
4072 | { | |
4073 | prevDefns[i].sym = sym; | |
4074 | prevDefns[i].block = block; | |
4c4b4cd2 | 4075 | return; |
76a01679 | 4076 | } |
4c4b4cd2 PH |
4077 | } |
4078 | ||
4079 | { | |
4080 | struct ada_symbol_info info; | |
4081 | ||
4082 | info.sym = sym; | |
4083 | info.block = block; | |
4c4b4cd2 PH |
4084 | obstack_grow (obstackp, &info, sizeof (struct ada_symbol_info)); |
4085 | } | |
4086 | } | |
4087 | ||
4088 | /* Number of ada_symbol_info structures currently collected in | |
4089 | current vector in *OBSTACKP. */ | |
4090 | ||
76a01679 JB |
4091 | static int |
4092 | num_defns_collected (struct obstack *obstackp) | |
4c4b4cd2 PH |
4093 | { |
4094 | return obstack_object_size (obstackp) / sizeof (struct ada_symbol_info); | |
4095 | } | |
4096 | ||
4097 | /* Vector of ada_symbol_info structures currently collected in current | |
4098 | vector in *OBSTACKP. If FINISH, close off the vector and return | |
4099 | its final address. */ | |
4100 | ||
76a01679 | 4101 | static struct ada_symbol_info * |
4c4b4cd2 PH |
4102 | defns_collected (struct obstack *obstackp, int finish) |
4103 | { | |
4104 | if (finish) | |
4105 | return obstack_finish (obstackp); | |
4106 | else | |
4107 | return (struct ada_symbol_info *) obstack_base (obstackp); | |
4108 | } | |
4109 | ||
96d887e8 PH |
4110 | /* Look, in partial_symtab PST, for symbol NAME in given namespace. |
4111 | Check the global symbols if GLOBAL, the static symbols if not. | |
4112 | Do wild-card match if WILD. */ | |
4c4b4cd2 | 4113 | |
96d887e8 PH |
4114 | static struct partial_symbol * |
4115 | ada_lookup_partial_symbol (struct partial_symtab *pst, const char *name, | |
4116 | int global, domain_enum namespace, int wild) | |
4c4b4cd2 | 4117 | { |
96d887e8 PH |
4118 | struct partial_symbol **start; |
4119 | int name_len = strlen (name); | |
4120 | int length = (global ? pst->n_global_syms : pst->n_static_syms); | |
4121 | int i; | |
4c4b4cd2 | 4122 | |
96d887e8 | 4123 | if (length == 0) |
4c4b4cd2 | 4124 | { |
96d887e8 | 4125 | return (NULL); |
4c4b4cd2 PH |
4126 | } |
4127 | ||
96d887e8 PH |
4128 | start = (global ? |
4129 | pst->objfile->global_psymbols.list + pst->globals_offset : | |
4130 | pst->objfile->static_psymbols.list + pst->statics_offset); | |
4c4b4cd2 | 4131 | |
96d887e8 | 4132 | if (wild) |
4c4b4cd2 | 4133 | { |
96d887e8 PH |
4134 | for (i = 0; i < length; i += 1) |
4135 | { | |
4136 | struct partial_symbol *psym = start[i]; | |
4c4b4cd2 | 4137 | |
5eeb2539 AR |
4138 | if (symbol_matches_domain (SYMBOL_LANGUAGE (psym), |
4139 | SYMBOL_DOMAIN (psym), namespace) | |
1265e4aa | 4140 | && wild_match (name, name_len, SYMBOL_LINKAGE_NAME (psym))) |
96d887e8 PH |
4141 | return psym; |
4142 | } | |
4143 | return NULL; | |
4c4b4cd2 | 4144 | } |
96d887e8 PH |
4145 | else |
4146 | { | |
4147 | if (global) | |
4148 | { | |
4149 | int U; | |
4150 | i = 0; | |
4151 | U = length - 1; | |
4152 | while (U - i > 4) | |
4153 | { | |
4154 | int M = (U + i) >> 1; | |
4155 | struct partial_symbol *psym = start[M]; | |
4156 | if (SYMBOL_LINKAGE_NAME (psym)[0] < name[0]) | |
4157 | i = M + 1; | |
4158 | else if (SYMBOL_LINKAGE_NAME (psym)[0] > name[0]) | |
4159 | U = M - 1; | |
4160 | else if (strcmp (SYMBOL_LINKAGE_NAME (psym), name) < 0) | |
4161 | i = M + 1; | |
4162 | else | |
4163 | U = M; | |
4164 | } | |
4165 | } | |
4166 | else | |
4167 | i = 0; | |
4c4b4cd2 | 4168 | |
96d887e8 PH |
4169 | while (i < length) |
4170 | { | |
4171 | struct partial_symbol *psym = start[i]; | |
4c4b4cd2 | 4172 | |
5eeb2539 AR |
4173 | if (symbol_matches_domain (SYMBOL_LANGUAGE (psym), |
4174 | SYMBOL_DOMAIN (psym), namespace)) | |
96d887e8 PH |
4175 | { |
4176 | int cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym), name_len); | |
4c4b4cd2 | 4177 | |
96d887e8 PH |
4178 | if (cmp < 0) |
4179 | { | |
4180 | if (global) | |
4181 | break; | |
4182 | } | |
4183 | else if (cmp == 0 | |
4184 | && is_name_suffix (SYMBOL_LINKAGE_NAME (psym) | |
76a01679 | 4185 | + name_len)) |
96d887e8 PH |
4186 | return psym; |
4187 | } | |
4188 | i += 1; | |
4189 | } | |
4c4b4cd2 | 4190 | |
96d887e8 PH |
4191 | if (global) |
4192 | { | |
4193 | int U; | |
4194 | i = 0; | |
4195 | U = length - 1; | |
4196 | while (U - i > 4) | |
4197 | { | |
4198 | int M = (U + i) >> 1; | |
4199 | struct partial_symbol *psym = start[M]; | |
4200 | if (SYMBOL_LINKAGE_NAME (psym)[0] < '_') | |
4201 | i = M + 1; | |
4202 | else if (SYMBOL_LINKAGE_NAME (psym)[0] > '_') | |
4203 | U = M - 1; | |
4204 | else if (strcmp (SYMBOL_LINKAGE_NAME (psym), "_ada_") < 0) | |
4205 | i = M + 1; | |
4206 | else | |
4207 | U = M; | |
4208 | } | |
4209 | } | |
4210 | else | |
4211 | i = 0; | |
4c4b4cd2 | 4212 | |
96d887e8 PH |
4213 | while (i < length) |
4214 | { | |
4215 | struct partial_symbol *psym = start[i]; | |
4c4b4cd2 | 4216 | |
5eeb2539 AR |
4217 | if (symbol_matches_domain (SYMBOL_LANGUAGE (psym), |
4218 | SYMBOL_DOMAIN (psym), namespace)) | |
96d887e8 PH |
4219 | { |
4220 | int cmp; | |
4c4b4cd2 | 4221 | |
96d887e8 PH |
4222 | cmp = (int) '_' - (int) SYMBOL_LINKAGE_NAME (psym)[0]; |
4223 | if (cmp == 0) | |
4224 | { | |
4225 | cmp = strncmp ("_ada_", SYMBOL_LINKAGE_NAME (psym), 5); | |
4226 | if (cmp == 0) | |
4227 | cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym) + 5, | |
76a01679 | 4228 | name_len); |
96d887e8 | 4229 | } |
4c4b4cd2 | 4230 | |
96d887e8 PH |
4231 | if (cmp < 0) |
4232 | { | |
4233 | if (global) | |
4234 | break; | |
4235 | } | |
4236 | else if (cmp == 0 | |
4237 | && is_name_suffix (SYMBOL_LINKAGE_NAME (psym) | |
76a01679 | 4238 | + name_len + 5)) |
96d887e8 PH |
4239 | return psym; |
4240 | } | |
4241 | i += 1; | |
4242 | } | |
4243 | } | |
4244 | return NULL; | |
4c4b4cd2 PH |
4245 | } |
4246 | ||
96d887e8 | 4247 | /* Find a symbol table containing symbol SYM or NULL if none. */ |
4c4b4cd2 | 4248 | |
96d887e8 PH |
4249 | static struct symtab * |
4250 | symtab_for_sym (struct symbol *sym) | |
4c4b4cd2 | 4251 | { |
96d887e8 PH |
4252 | struct symtab *s; |
4253 | struct objfile *objfile; | |
4254 | struct block *b; | |
4255 | struct symbol *tmp_sym; | |
4256 | struct dict_iterator iter; | |
4257 | int j; | |
4c4b4cd2 | 4258 | |
11309657 | 4259 | ALL_PRIMARY_SYMTABS (objfile, s) |
96d887e8 PH |
4260 | { |
4261 | switch (SYMBOL_CLASS (sym)) | |
4262 | { | |
4263 | case LOC_CONST: | |
4264 | case LOC_STATIC: | |
4265 | case LOC_TYPEDEF: | |
4266 | case LOC_REGISTER: | |
4267 | case LOC_LABEL: | |
4268 | case LOC_BLOCK: | |
4269 | case LOC_CONST_BYTES: | |
76a01679 JB |
4270 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); |
4271 | ALL_BLOCK_SYMBOLS (b, iter, tmp_sym) if (sym == tmp_sym) | |
4272 | return s; | |
4273 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
4274 | ALL_BLOCK_SYMBOLS (b, iter, tmp_sym) if (sym == tmp_sym) | |
4275 | return s; | |
96d887e8 PH |
4276 | break; |
4277 | default: | |
4278 | break; | |
4279 | } | |
4280 | switch (SYMBOL_CLASS (sym)) | |
4281 | { | |
4282 | case LOC_REGISTER: | |
4283 | case LOC_ARG: | |
4284 | case LOC_REF_ARG: | |
96d887e8 PH |
4285 | case LOC_REGPARM_ADDR: |
4286 | case LOC_LOCAL: | |
4287 | case LOC_TYPEDEF: | |
96d887e8 | 4288 | case LOC_COMPUTED: |
76a01679 JB |
4289 | for (j = FIRST_LOCAL_BLOCK; |
4290 | j < BLOCKVECTOR_NBLOCKS (BLOCKVECTOR (s)); j += 1) | |
4291 | { | |
4292 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), j); | |
4293 | ALL_BLOCK_SYMBOLS (b, iter, tmp_sym) if (sym == tmp_sym) | |
4294 | return s; | |
4295 | } | |
4296 | break; | |
96d887e8 PH |
4297 | default: |
4298 | break; | |
4299 | } | |
4300 | } | |
4301 | return NULL; | |
4c4b4cd2 PH |
4302 | } |
4303 | ||
96d887e8 PH |
4304 | /* Return a minimal symbol matching NAME according to Ada decoding |
4305 | rules. Returns NULL if there is no such minimal symbol. Names | |
4306 | prefixed with "standard__" are handled specially: "standard__" is | |
4307 | first stripped off, and only static and global symbols are searched. */ | |
4c4b4cd2 | 4308 | |
96d887e8 PH |
4309 | struct minimal_symbol * |
4310 | ada_lookup_simple_minsym (const char *name) | |
4c4b4cd2 | 4311 | { |
4c4b4cd2 | 4312 | struct objfile *objfile; |
96d887e8 PH |
4313 | struct minimal_symbol *msymbol; |
4314 | int wild_match; | |
4c4b4cd2 | 4315 | |
96d887e8 | 4316 | if (strncmp (name, "standard__", sizeof ("standard__") - 1) == 0) |
4c4b4cd2 | 4317 | { |
96d887e8 | 4318 | name += sizeof ("standard__") - 1; |
4c4b4cd2 | 4319 | wild_match = 0; |
4c4b4cd2 PH |
4320 | } |
4321 | else | |
96d887e8 | 4322 | wild_match = (strstr (name, "__") == NULL); |
4c4b4cd2 | 4323 | |
96d887e8 PH |
4324 | ALL_MSYMBOLS (objfile, msymbol) |
4325 | { | |
4326 | if (ada_match_name (SYMBOL_LINKAGE_NAME (msymbol), name, wild_match) | |
4327 | && MSYMBOL_TYPE (msymbol) != mst_solib_trampoline) | |
4328 | return msymbol; | |
4329 | } | |
4c4b4cd2 | 4330 | |
96d887e8 PH |
4331 | return NULL; |
4332 | } | |
4c4b4cd2 | 4333 | |
96d887e8 PH |
4334 | /* For all subprograms that statically enclose the subprogram of the |
4335 | selected frame, add symbols matching identifier NAME in DOMAIN | |
4336 | and their blocks to the list of data in OBSTACKP, as for | |
4337 | ada_add_block_symbols (q.v.). If WILD, treat as NAME with a | |
4338 | wildcard prefix. */ | |
4c4b4cd2 | 4339 | |
96d887e8 PH |
4340 | static void |
4341 | add_symbols_from_enclosing_procs (struct obstack *obstackp, | |
76a01679 | 4342 | const char *name, domain_enum namespace, |
96d887e8 PH |
4343 | int wild_match) |
4344 | { | |
96d887e8 | 4345 | } |
14f9c5c9 | 4346 | |
96d887e8 PH |
4347 | /* True if TYPE is definitely an artificial type supplied to a symbol |
4348 | for which no debugging information was given in the symbol file. */ | |
14f9c5c9 | 4349 | |
96d887e8 PH |
4350 | static int |
4351 | is_nondebugging_type (struct type *type) | |
4352 | { | |
4353 | char *name = ada_type_name (type); | |
4354 | return (name != NULL && strcmp (name, "<variable, no debug info>") == 0); | |
4355 | } | |
4c4b4cd2 | 4356 | |
96d887e8 PH |
4357 | /* Remove any non-debugging symbols in SYMS[0 .. NSYMS-1] that definitely |
4358 | duplicate other symbols in the list (The only case I know of where | |
4359 | this happens is when object files containing stabs-in-ecoff are | |
4360 | linked with files containing ordinary ecoff debugging symbols (or no | |
4361 | debugging symbols)). Modifies SYMS to squeeze out deleted entries. | |
4362 | Returns the number of items in the modified list. */ | |
4c4b4cd2 | 4363 | |
96d887e8 PH |
4364 | static int |
4365 | remove_extra_symbols (struct ada_symbol_info *syms, int nsyms) | |
4366 | { | |
4367 | int i, j; | |
4c4b4cd2 | 4368 | |
96d887e8 PH |
4369 | i = 0; |
4370 | while (i < nsyms) | |
4371 | { | |
339c13b6 JB |
4372 | int remove = 0; |
4373 | ||
4374 | /* If two symbols have the same name and one of them is a stub type, | |
4375 | the get rid of the stub. */ | |
4376 | ||
4377 | if (TYPE_STUB (SYMBOL_TYPE (syms[i].sym)) | |
4378 | && SYMBOL_LINKAGE_NAME (syms[i].sym) != NULL) | |
4379 | { | |
4380 | for (j = 0; j < nsyms; j++) | |
4381 | { | |
4382 | if (j != i | |
4383 | && !TYPE_STUB (SYMBOL_TYPE (syms[j].sym)) | |
4384 | && SYMBOL_LINKAGE_NAME (syms[j].sym) != NULL | |
4385 | && strcmp (SYMBOL_LINKAGE_NAME (syms[i].sym), | |
4386 | SYMBOL_LINKAGE_NAME (syms[j].sym)) == 0) | |
4387 | remove = 1; | |
4388 | } | |
4389 | } | |
4390 | ||
4391 | /* Two symbols with the same name, same class and same address | |
4392 | should be identical. */ | |
4393 | ||
4394 | else if (SYMBOL_LINKAGE_NAME (syms[i].sym) != NULL | |
96d887e8 PH |
4395 | && SYMBOL_CLASS (syms[i].sym) == LOC_STATIC |
4396 | && is_nondebugging_type (SYMBOL_TYPE (syms[i].sym))) | |
4397 | { | |
4398 | for (j = 0; j < nsyms; j += 1) | |
4399 | { | |
4400 | if (i != j | |
4401 | && SYMBOL_LINKAGE_NAME (syms[j].sym) != NULL | |
4402 | && strcmp (SYMBOL_LINKAGE_NAME (syms[i].sym), | |
76a01679 | 4403 | SYMBOL_LINKAGE_NAME (syms[j].sym)) == 0 |
96d887e8 PH |
4404 | && SYMBOL_CLASS (syms[i].sym) == SYMBOL_CLASS (syms[j].sym) |
4405 | && SYMBOL_VALUE_ADDRESS (syms[i].sym) | |
4406 | == SYMBOL_VALUE_ADDRESS (syms[j].sym)) | |
339c13b6 | 4407 | remove = 1; |
4c4b4cd2 | 4408 | } |
4c4b4cd2 | 4409 | } |
339c13b6 JB |
4410 | |
4411 | if (remove) | |
4412 | { | |
4413 | for (j = i + 1; j < nsyms; j += 1) | |
4414 | syms[j - 1] = syms[j]; | |
4415 | nsyms -= 1; | |
4416 | } | |
4417 | ||
96d887e8 | 4418 | i += 1; |
14f9c5c9 | 4419 | } |
96d887e8 | 4420 | return nsyms; |
14f9c5c9 AS |
4421 | } |
4422 | ||
96d887e8 PH |
4423 | /* Given a type that corresponds to a renaming entity, use the type name |
4424 | to extract the scope (package name or function name, fully qualified, | |
4425 | and following the GNAT encoding convention) where this renaming has been | |
4426 | defined. The string returned needs to be deallocated after use. */ | |
4c4b4cd2 | 4427 | |
96d887e8 PH |
4428 | static char * |
4429 | xget_renaming_scope (struct type *renaming_type) | |
14f9c5c9 | 4430 | { |
96d887e8 PH |
4431 | /* The renaming types adhere to the following convention: |
4432 | <scope>__<rename>___<XR extension>. | |
4433 | So, to extract the scope, we search for the "___XR" extension, | |
4434 | and then backtrack until we find the first "__". */ | |
76a01679 | 4435 | |
96d887e8 PH |
4436 | const char *name = type_name_no_tag (renaming_type); |
4437 | char *suffix = strstr (name, "___XR"); | |
4438 | char *last; | |
4439 | int scope_len; | |
4440 | char *scope; | |
14f9c5c9 | 4441 | |
96d887e8 PH |
4442 | /* Now, backtrack a bit until we find the first "__". Start looking |
4443 | at suffix - 3, as the <rename> part is at least one character long. */ | |
14f9c5c9 | 4444 | |
96d887e8 PH |
4445 | for (last = suffix - 3; last > name; last--) |
4446 | if (last[0] == '_' && last[1] == '_') | |
4447 | break; | |
76a01679 | 4448 | |
96d887e8 | 4449 | /* Make a copy of scope and return it. */ |
14f9c5c9 | 4450 | |
96d887e8 PH |
4451 | scope_len = last - name; |
4452 | scope = (char *) xmalloc ((scope_len + 1) * sizeof (char)); | |
14f9c5c9 | 4453 | |
96d887e8 PH |
4454 | strncpy (scope, name, scope_len); |
4455 | scope[scope_len] = '\0'; | |
4c4b4cd2 | 4456 | |
96d887e8 | 4457 | return scope; |
4c4b4cd2 PH |
4458 | } |
4459 | ||
96d887e8 | 4460 | /* Return nonzero if NAME corresponds to a package name. */ |
4c4b4cd2 | 4461 | |
96d887e8 PH |
4462 | static int |
4463 | is_package_name (const char *name) | |
4c4b4cd2 | 4464 | { |
96d887e8 PH |
4465 | /* Here, We take advantage of the fact that no symbols are generated |
4466 | for packages, while symbols are generated for each function. | |
4467 | So the condition for NAME represent a package becomes equivalent | |
4468 | to NAME not existing in our list of symbols. There is only one | |
4469 | small complication with library-level functions (see below). */ | |
4c4b4cd2 | 4470 | |
96d887e8 | 4471 | char *fun_name; |
76a01679 | 4472 | |
96d887e8 PH |
4473 | /* If it is a function that has not been defined at library level, |
4474 | then we should be able to look it up in the symbols. */ | |
4475 | if (standard_lookup (name, NULL, VAR_DOMAIN) != NULL) | |
4476 | return 0; | |
14f9c5c9 | 4477 | |
96d887e8 PH |
4478 | /* Library-level function names start with "_ada_". See if function |
4479 | "_ada_" followed by NAME can be found. */ | |
14f9c5c9 | 4480 | |
96d887e8 | 4481 | /* Do a quick check that NAME does not contain "__", since library-level |
e1d5a0d2 | 4482 | functions names cannot contain "__" in them. */ |
96d887e8 PH |
4483 | if (strstr (name, "__") != NULL) |
4484 | return 0; | |
4c4b4cd2 | 4485 | |
b435e160 | 4486 | fun_name = xstrprintf ("_ada_%s", name); |
14f9c5c9 | 4487 | |
96d887e8 PH |
4488 | return (standard_lookup (fun_name, NULL, VAR_DOMAIN) == NULL); |
4489 | } | |
14f9c5c9 | 4490 | |
96d887e8 | 4491 | /* Return nonzero if SYM corresponds to a renaming entity that is |
aeb5907d | 4492 | not visible from FUNCTION_NAME. */ |
14f9c5c9 | 4493 | |
96d887e8 | 4494 | static int |
aeb5907d | 4495 | old_renaming_is_invisible (const struct symbol *sym, char *function_name) |
96d887e8 | 4496 | { |
aeb5907d JB |
4497 | char *scope; |
4498 | ||
4499 | if (SYMBOL_CLASS (sym) != LOC_TYPEDEF) | |
4500 | return 0; | |
4501 | ||
4502 | scope = xget_renaming_scope (SYMBOL_TYPE (sym)); | |
d2e4a39e | 4503 | |
96d887e8 | 4504 | make_cleanup (xfree, scope); |
14f9c5c9 | 4505 | |
96d887e8 PH |
4506 | /* If the rename has been defined in a package, then it is visible. */ |
4507 | if (is_package_name (scope)) | |
aeb5907d | 4508 | return 0; |
14f9c5c9 | 4509 | |
96d887e8 PH |
4510 | /* Check that the rename is in the current function scope by checking |
4511 | that its name starts with SCOPE. */ | |
76a01679 | 4512 | |
96d887e8 PH |
4513 | /* If the function name starts with "_ada_", it means that it is |
4514 | a library-level function. Strip this prefix before doing the | |
4515 | comparison, as the encoding for the renaming does not contain | |
4516 | this prefix. */ | |
4517 | if (strncmp (function_name, "_ada_", 5) == 0) | |
4518 | function_name += 5; | |
f26caa11 | 4519 | |
aeb5907d | 4520 | return (strncmp (function_name, scope, strlen (scope)) != 0); |
f26caa11 PH |
4521 | } |
4522 | ||
aeb5907d JB |
4523 | /* Remove entries from SYMS that corresponds to a renaming entity that |
4524 | is not visible from the function associated with CURRENT_BLOCK or | |
4525 | that is superfluous due to the presence of more specific renaming | |
4526 | information. Places surviving symbols in the initial entries of | |
4527 | SYMS and returns the number of surviving symbols. | |
96d887e8 PH |
4528 | |
4529 | Rationale: | |
aeb5907d JB |
4530 | First, in cases where an object renaming is implemented as a |
4531 | reference variable, GNAT may produce both the actual reference | |
4532 | variable and the renaming encoding. In this case, we discard the | |
4533 | latter. | |
4534 | ||
4535 | Second, GNAT emits a type following a specified encoding for each renaming | |
96d887e8 PH |
4536 | entity. Unfortunately, STABS currently does not support the definition |
4537 | of types that are local to a given lexical block, so all renamings types | |
4538 | are emitted at library level. As a consequence, if an application | |
4539 | contains two renaming entities using the same name, and a user tries to | |
4540 | print the value of one of these entities, the result of the ada symbol | |
4541 | lookup will also contain the wrong renaming type. | |
f26caa11 | 4542 | |
96d887e8 PH |
4543 | This function partially covers for this limitation by attempting to |
4544 | remove from the SYMS list renaming symbols that should be visible | |
4545 | from CURRENT_BLOCK. However, there does not seem be a 100% reliable | |
4546 | method with the current information available. The implementation | |
4547 | below has a couple of limitations (FIXME: brobecker-2003-05-12): | |
4548 | ||
4549 | - When the user tries to print a rename in a function while there | |
4550 | is another rename entity defined in a package: Normally, the | |
4551 | rename in the function has precedence over the rename in the | |
4552 | package, so the latter should be removed from the list. This is | |
4553 | currently not the case. | |
4554 | ||
4555 | - This function will incorrectly remove valid renames if | |
4556 | the CURRENT_BLOCK corresponds to a function which symbol name | |
4557 | has been changed by an "Export" pragma. As a consequence, | |
4558 | the user will be unable to print such rename entities. */ | |
4c4b4cd2 | 4559 | |
14f9c5c9 | 4560 | static int |
aeb5907d JB |
4561 | remove_irrelevant_renamings (struct ada_symbol_info *syms, |
4562 | int nsyms, const struct block *current_block) | |
4c4b4cd2 PH |
4563 | { |
4564 | struct symbol *current_function; | |
4565 | char *current_function_name; | |
4566 | int i; | |
aeb5907d JB |
4567 | int is_new_style_renaming; |
4568 | ||
4569 | /* If there is both a renaming foo___XR... encoded as a variable and | |
4570 | a simple variable foo in the same block, discard the latter. | |
4571 | First, zero out such symbols, then compress. */ | |
4572 | is_new_style_renaming = 0; | |
4573 | for (i = 0; i < nsyms; i += 1) | |
4574 | { | |
4575 | struct symbol *sym = syms[i].sym; | |
4576 | struct block *block = syms[i].block; | |
4577 | const char *name; | |
4578 | const char *suffix; | |
4579 | ||
4580 | if (sym == NULL || SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
4581 | continue; | |
4582 | name = SYMBOL_LINKAGE_NAME (sym); | |
4583 | suffix = strstr (name, "___XR"); | |
4584 | ||
4585 | if (suffix != NULL) | |
4586 | { | |
4587 | int name_len = suffix - name; | |
4588 | int j; | |
4589 | is_new_style_renaming = 1; | |
4590 | for (j = 0; j < nsyms; j += 1) | |
4591 | if (i != j && syms[j].sym != NULL | |
4592 | && strncmp (name, SYMBOL_LINKAGE_NAME (syms[j].sym), | |
4593 | name_len) == 0 | |
4594 | && block == syms[j].block) | |
4595 | syms[j].sym = NULL; | |
4596 | } | |
4597 | } | |
4598 | if (is_new_style_renaming) | |
4599 | { | |
4600 | int j, k; | |
4601 | ||
4602 | for (j = k = 0; j < nsyms; j += 1) | |
4603 | if (syms[j].sym != NULL) | |
4604 | { | |
4605 | syms[k] = syms[j]; | |
4606 | k += 1; | |
4607 | } | |
4608 | return k; | |
4609 | } | |
4c4b4cd2 PH |
4610 | |
4611 | /* Extract the function name associated to CURRENT_BLOCK. | |
4612 | Abort if unable to do so. */ | |
76a01679 | 4613 | |
4c4b4cd2 PH |
4614 | if (current_block == NULL) |
4615 | return nsyms; | |
76a01679 | 4616 | |
7f0df278 | 4617 | current_function = block_linkage_function (current_block); |
4c4b4cd2 PH |
4618 | if (current_function == NULL) |
4619 | return nsyms; | |
4620 | ||
4621 | current_function_name = SYMBOL_LINKAGE_NAME (current_function); | |
4622 | if (current_function_name == NULL) | |
4623 | return nsyms; | |
4624 | ||
4625 | /* Check each of the symbols, and remove it from the list if it is | |
4626 | a type corresponding to a renaming that is out of the scope of | |
4627 | the current block. */ | |
4628 | ||
4629 | i = 0; | |
4630 | while (i < nsyms) | |
4631 | { | |
aeb5907d JB |
4632 | if (ada_parse_renaming (syms[i].sym, NULL, NULL, NULL) |
4633 | == ADA_OBJECT_RENAMING | |
4634 | && old_renaming_is_invisible (syms[i].sym, current_function_name)) | |
4c4b4cd2 PH |
4635 | { |
4636 | int j; | |
aeb5907d | 4637 | for (j = i + 1; j < nsyms; j += 1) |
76a01679 | 4638 | syms[j - 1] = syms[j]; |
4c4b4cd2 PH |
4639 | nsyms -= 1; |
4640 | } | |
4641 | else | |
4642 | i += 1; | |
4643 | } | |
4644 | ||
4645 | return nsyms; | |
4646 | } | |
4647 | ||
339c13b6 JB |
4648 | /* Add to OBSTACKP all symbols from BLOCK (and its super-blocks) |
4649 | whose name and domain match NAME and DOMAIN respectively. | |
4650 | If no match was found, then extend the search to "enclosing" | |
4651 | routines (in other words, if we're inside a nested function, | |
4652 | search the symbols defined inside the enclosing functions). | |
4653 | ||
4654 | Note: This function assumes that OBSTACKP has 0 (zero) element in it. */ | |
4655 | ||
4656 | static void | |
4657 | ada_add_local_symbols (struct obstack *obstackp, const char *name, | |
4658 | struct block *block, domain_enum domain, | |
4659 | int wild_match) | |
4660 | { | |
4661 | int block_depth = 0; | |
4662 | ||
4663 | while (block != NULL) | |
4664 | { | |
4665 | block_depth += 1; | |
4666 | ada_add_block_symbols (obstackp, block, name, domain, NULL, wild_match); | |
4667 | ||
4668 | /* If we found a non-function match, assume that's the one. */ | |
4669 | if (is_nonfunction (defns_collected (obstackp, 0), | |
4670 | num_defns_collected (obstackp))) | |
4671 | return; | |
4672 | ||
4673 | block = BLOCK_SUPERBLOCK (block); | |
4674 | } | |
4675 | ||
4676 | /* If no luck so far, try to find NAME as a local symbol in some lexically | |
4677 | enclosing subprogram. */ | |
4678 | if (num_defns_collected (obstackp) == 0 && block_depth > 2) | |
4679 | add_symbols_from_enclosing_procs (obstackp, name, domain, wild_match); | |
4680 | } | |
4681 | ||
4682 | /* Add to OBSTACKP all non-local symbols whose name and domain match | |
4683 | NAME and DOMAIN respectively. The search is performed on GLOBAL_BLOCK | |
4684 | symbols if GLOBAL is non-zero, or on STATIC_BLOCK symbols otherwise. */ | |
4685 | ||
4686 | static void | |
4687 | ada_add_non_local_symbols (struct obstack *obstackp, const char *name, | |
4688 | domain_enum domain, int global, | |
4689 | int wild_match) | |
4690 | { | |
4691 | struct objfile *objfile; | |
4692 | struct partial_symtab *ps; | |
4693 | ||
4694 | ALL_PSYMTABS (objfile, ps) | |
4695 | { | |
4696 | QUIT; | |
4697 | if (ps->readin | |
4698 | || ada_lookup_partial_symbol (ps, name, global, domain, wild_match)) | |
4699 | { | |
4700 | struct symtab *s = PSYMTAB_TO_SYMTAB (ps); | |
4701 | const int block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; | |
4702 | ||
4703 | if (s == NULL || !s->primary) | |
4704 | continue; | |
4705 | ada_add_block_symbols (obstackp, | |
4706 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), block_kind), | |
4707 | name, domain, objfile, wild_match); | |
4708 | } | |
4709 | } | |
4710 | } | |
4711 | ||
4c4b4cd2 PH |
4712 | /* Find symbols in DOMAIN matching NAME0, in BLOCK0 and enclosing |
4713 | scope and in global scopes, returning the number of matches. Sets | |
6c9353d3 | 4714 | *RESULTS to point to a vector of (SYM,BLOCK) tuples, |
4c4b4cd2 PH |
4715 | indicating the symbols found and the blocks and symbol tables (if |
4716 | any) in which they were found. This vector are transient---good only to | |
4717 | the next call of ada_lookup_symbol_list. Any non-function/non-enumeral | |
4718 | symbol match within the nest of blocks whose innermost member is BLOCK0, | |
4719 | is the one match returned (no other matches in that or | |
4720 | enclosing blocks is returned). If there are any matches in or | |
4721 | surrounding BLOCK0, then these alone are returned. Otherwise, the | |
4722 | search extends to global and file-scope (static) symbol tables. | |
4723 | Names prefixed with "standard__" are handled specially: "standard__" | |
4724 | is first stripped off, and only static and global symbols are searched. */ | |
14f9c5c9 AS |
4725 | |
4726 | int | |
4c4b4cd2 | 4727 | ada_lookup_symbol_list (const char *name0, const struct block *block0, |
76a01679 JB |
4728 | domain_enum namespace, |
4729 | struct ada_symbol_info **results) | |
14f9c5c9 AS |
4730 | { |
4731 | struct symbol *sym; | |
14f9c5c9 | 4732 | struct block *block; |
4c4b4cd2 | 4733 | const char *name; |
4c4b4cd2 | 4734 | int wild_match; |
14f9c5c9 | 4735 | int cacheIfUnique; |
4c4b4cd2 | 4736 | int ndefns; |
14f9c5c9 | 4737 | |
4c4b4cd2 PH |
4738 | obstack_free (&symbol_list_obstack, NULL); |
4739 | obstack_init (&symbol_list_obstack); | |
14f9c5c9 | 4740 | |
14f9c5c9 AS |
4741 | cacheIfUnique = 0; |
4742 | ||
4743 | /* Search specified block and its superiors. */ | |
4744 | ||
4c4b4cd2 PH |
4745 | wild_match = (strstr (name0, "__") == NULL); |
4746 | name = name0; | |
76a01679 JB |
4747 | block = (struct block *) block0; /* FIXME: No cast ought to be |
4748 | needed, but adding const will | |
4749 | have a cascade effect. */ | |
339c13b6 JB |
4750 | |
4751 | /* Special case: If the user specifies a symbol name inside package | |
4752 | Standard, do a non-wild matching of the symbol name without | |
4753 | the "standard__" prefix. This was primarily introduced in order | |
4754 | to allow the user to specifically access the standard exceptions | |
4755 | using, for instance, Standard.Constraint_Error when Constraint_Error | |
4756 | is ambiguous (due to the user defining its own Constraint_Error | |
4757 | entity inside its program). */ | |
4c4b4cd2 PH |
4758 | if (strncmp (name0, "standard__", sizeof ("standard__") - 1) == 0) |
4759 | { | |
4760 | wild_match = 0; | |
4761 | block = NULL; | |
4762 | name = name0 + sizeof ("standard__") - 1; | |
4763 | } | |
4764 | ||
339c13b6 | 4765 | /* Check the non-global symbols. If we have ANY match, then we're done. */ |
14f9c5c9 | 4766 | |
339c13b6 JB |
4767 | ada_add_local_symbols (&symbol_list_obstack, name, block, namespace, |
4768 | wild_match); | |
4c4b4cd2 | 4769 | if (num_defns_collected (&symbol_list_obstack) > 0) |
14f9c5c9 | 4770 | goto done; |
d2e4a39e | 4771 | |
339c13b6 JB |
4772 | /* No non-global symbols found. Check our cache to see if we have |
4773 | already performed this search before. If we have, then return | |
4774 | the same result. */ | |
4775 | ||
14f9c5c9 | 4776 | cacheIfUnique = 1; |
2570f2b7 | 4777 | if (lookup_cached_symbol (name0, namespace, &sym, &block)) |
4c4b4cd2 PH |
4778 | { |
4779 | if (sym != NULL) | |
2570f2b7 | 4780 | add_defn_to_vec (&symbol_list_obstack, sym, block); |
4c4b4cd2 PH |
4781 | goto done; |
4782 | } | |
14f9c5c9 | 4783 | |
339c13b6 JB |
4784 | /* Search symbols from all global blocks. */ |
4785 | ||
4786 | ada_add_non_local_symbols (&symbol_list_obstack, name, namespace, 1, | |
4787 | wild_match); | |
d2e4a39e | 4788 | |
4c4b4cd2 | 4789 | /* Now add symbols from all per-file blocks if we've gotten no hits |
339c13b6 | 4790 | (not strictly correct, but perhaps better than an error). */ |
d2e4a39e | 4791 | |
4c4b4cd2 | 4792 | if (num_defns_collected (&symbol_list_obstack) == 0) |
339c13b6 JB |
4793 | ada_add_non_local_symbols (&symbol_list_obstack, name, namespace, 0, |
4794 | wild_match); | |
14f9c5c9 | 4795 | |
4c4b4cd2 PH |
4796 | done: |
4797 | ndefns = num_defns_collected (&symbol_list_obstack); | |
4798 | *results = defns_collected (&symbol_list_obstack, 1); | |
4799 | ||
4800 | ndefns = remove_extra_symbols (*results, ndefns); | |
4801 | ||
d2e4a39e | 4802 | if (ndefns == 0) |
2570f2b7 | 4803 | cache_symbol (name0, namespace, NULL, NULL); |
14f9c5c9 | 4804 | |
4c4b4cd2 | 4805 | if (ndefns == 1 && cacheIfUnique) |
2570f2b7 | 4806 | cache_symbol (name0, namespace, (*results)[0].sym, (*results)[0].block); |
14f9c5c9 | 4807 | |
aeb5907d | 4808 | ndefns = remove_irrelevant_renamings (*results, ndefns, block0); |
14f9c5c9 | 4809 | |
14f9c5c9 AS |
4810 | return ndefns; |
4811 | } | |
4812 | ||
d2e4a39e | 4813 | struct symbol * |
aeb5907d | 4814 | ada_lookup_encoded_symbol (const char *name, const struct block *block0, |
21b556f4 | 4815 | domain_enum namespace, struct block **block_found) |
14f9c5c9 | 4816 | { |
4c4b4cd2 | 4817 | struct ada_symbol_info *candidates; |
14f9c5c9 AS |
4818 | int n_candidates; |
4819 | ||
aeb5907d | 4820 | n_candidates = ada_lookup_symbol_list (name, block0, namespace, &candidates); |
14f9c5c9 AS |
4821 | |
4822 | if (n_candidates == 0) | |
4823 | return NULL; | |
4c4b4cd2 | 4824 | |
aeb5907d JB |
4825 | if (block_found != NULL) |
4826 | *block_found = candidates[0].block; | |
4c4b4cd2 | 4827 | |
21b556f4 | 4828 | return fixup_symbol_section (candidates[0].sym, NULL); |
aeb5907d JB |
4829 | } |
4830 | ||
4831 | /* Return a symbol in DOMAIN matching NAME, in BLOCK0 and enclosing | |
4832 | scope and in global scopes, or NULL if none. NAME is folded and | |
4833 | encoded first. Otherwise, the result is as for ada_lookup_symbol_list, | |
4834 | choosing the first symbol if there are multiple choices. | |
4835 | *IS_A_FIELD_OF_THIS is set to 0 and *SYMTAB is set to the symbol | |
4836 | table in which the symbol was found (in both cases, these | |
4837 | assignments occur only if the pointers are non-null). */ | |
4838 | struct symbol * | |
4839 | ada_lookup_symbol (const char *name, const struct block *block0, | |
21b556f4 | 4840 | domain_enum namespace, int *is_a_field_of_this) |
aeb5907d JB |
4841 | { |
4842 | if (is_a_field_of_this != NULL) | |
4843 | *is_a_field_of_this = 0; | |
4844 | ||
4845 | return | |
4846 | ada_lookup_encoded_symbol (ada_encode (ada_fold_name (name)), | |
21b556f4 | 4847 | block0, namespace, NULL); |
4c4b4cd2 | 4848 | } |
14f9c5c9 | 4849 | |
4c4b4cd2 PH |
4850 | static struct symbol * |
4851 | ada_lookup_symbol_nonlocal (const char *name, | |
76a01679 JB |
4852 | const char *linkage_name, |
4853 | const struct block *block, | |
21b556f4 | 4854 | const domain_enum domain) |
4c4b4cd2 PH |
4855 | { |
4856 | if (linkage_name == NULL) | |
4857 | linkage_name = name; | |
76a01679 | 4858 | return ada_lookup_symbol (linkage_name, block_static_block (block), domain, |
21b556f4 | 4859 | NULL); |
14f9c5c9 AS |
4860 | } |
4861 | ||
4862 | ||
4c4b4cd2 PH |
4863 | /* True iff STR is a possible encoded suffix of a normal Ada name |
4864 | that is to be ignored for matching purposes. Suffixes of parallel | |
4865 | names (e.g., XVE) are not included here. Currently, the possible suffixes | |
5823c3ef | 4866 | are given by any of the regular expressions: |
4c4b4cd2 | 4867 | |
babe1480 JB |
4868 | [.$][0-9]+ [nested subprogram suffix, on platforms such as GNU/Linux] |
4869 | ___[0-9]+ [nested subprogram suffix, on platforms such as HP/UX] | |
4870 | _E[0-9]+[bs]$ [protected object entry suffixes] | |
61ee279c | 4871 | (X[nb]*)?((\$|__)[0-9](_?[0-9]+)|___(JM|LJM|X([FDBUP].*|R[^T]?)))?$ |
babe1480 JB |
4872 | |
4873 | Also, any leading "__[0-9]+" sequence is skipped before the suffix | |
4874 | match is performed. This sequence is used to differentiate homonyms, | |
4875 | is an optional part of a valid name suffix. */ | |
4c4b4cd2 | 4876 | |
14f9c5c9 | 4877 | static int |
d2e4a39e | 4878 | is_name_suffix (const char *str) |
14f9c5c9 AS |
4879 | { |
4880 | int k; | |
4c4b4cd2 PH |
4881 | const char *matching; |
4882 | const int len = strlen (str); | |
4883 | ||
babe1480 JB |
4884 | /* Skip optional leading __[0-9]+. */ |
4885 | ||
4c4b4cd2 PH |
4886 | if (len > 3 && str[0] == '_' && str[1] == '_' && isdigit (str[2])) |
4887 | { | |
babe1480 JB |
4888 | str += 3; |
4889 | while (isdigit (str[0])) | |
4890 | str += 1; | |
4c4b4cd2 | 4891 | } |
babe1480 JB |
4892 | |
4893 | /* [.$][0-9]+ */ | |
4c4b4cd2 | 4894 | |
babe1480 | 4895 | if (str[0] == '.' || str[0] == '$') |
4c4b4cd2 | 4896 | { |
babe1480 | 4897 | matching = str + 1; |
4c4b4cd2 PH |
4898 | while (isdigit (matching[0])) |
4899 | matching += 1; | |
4900 | if (matching[0] == '\0') | |
4901 | return 1; | |
4902 | } | |
4903 | ||
4904 | /* ___[0-9]+ */ | |
babe1480 | 4905 | |
4c4b4cd2 PH |
4906 | if (len > 3 && str[0] == '_' && str[1] == '_' && str[2] == '_') |
4907 | { | |
4908 | matching = str + 3; | |
4909 | while (isdigit (matching[0])) | |
4910 | matching += 1; | |
4911 | if (matching[0] == '\0') | |
4912 | return 1; | |
4913 | } | |
4914 | ||
529cad9c PH |
4915 | #if 0 |
4916 | /* FIXME: brobecker/2005-09-23: Protected Object subprograms end | |
4917 | with a N at the end. Unfortunately, the compiler uses the same | |
4918 | convention for other internal types it creates. So treating | |
4919 | all entity names that end with an "N" as a name suffix causes | |
4920 | some regressions. For instance, consider the case of an enumerated | |
4921 | type. To support the 'Image attribute, it creates an array whose | |
4922 | name ends with N. | |
4923 | Having a single character like this as a suffix carrying some | |
4924 | information is a bit risky. Perhaps we should change the encoding | |
4925 | to be something like "_N" instead. In the meantime, do not do | |
4926 | the following check. */ | |
4927 | /* Protected Object Subprograms */ | |
4928 | if (len == 1 && str [0] == 'N') | |
4929 | return 1; | |
4930 | #endif | |
4931 | ||
4932 | /* _E[0-9]+[bs]$ */ | |
4933 | if (len > 3 && str[0] == '_' && str [1] == 'E' && isdigit (str[2])) | |
4934 | { | |
4935 | matching = str + 3; | |
4936 | while (isdigit (matching[0])) | |
4937 | matching += 1; | |
4938 | if ((matching[0] == 'b' || matching[0] == 's') | |
4939 | && matching [1] == '\0') | |
4940 | return 1; | |
4941 | } | |
4942 | ||
4c4b4cd2 PH |
4943 | /* ??? We should not modify STR directly, as we are doing below. This |
4944 | is fine in this case, but may become problematic later if we find | |
4945 | that this alternative did not work, and want to try matching | |
4946 | another one from the begining of STR. Since we modified it, we | |
4947 | won't be able to find the begining of the string anymore! */ | |
14f9c5c9 AS |
4948 | if (str[0] == 'X') |
4949 | { | |
4950 | str += 1; | |
d2e4a39e | 4951 | while (str[0] != '_' && str[0] != '\0') |
4c4b4cd2 PH |
4952 | { |
4953 | if (str[0] != 'n' && str[0] != 'b') | |
4954 | return 0; | |
4955 | str += 1; | |
4956 | } | |
14f9c5c9 | 4957 | } |
babe1480 | 4958 | |
14f9c5c9 AS |
4959 | if (str[0] == '\000') |
4960 | return 1; | |
babe1480 | 4961 | |
d2e4a39e | 4962 | if (str[0] == '_') |
14f9c5c9 AS |
4963 | { |
4964 | if (str[1] != '_' || str[2] == '\000') | |
4c4b4cd2 | 4965 | return 0; |
d2e4a39e | 4966 | if (str[2] == '_') |
4c4b4cd2 | 4967 | { |
61ee279c PH |
4968 | if (strcmp (str + 3, "JM") == 0) |
4969 | return 1; | |
4970 | /* FIXME: brobecker/2004-09-30: GNAT will soon stop using | |
4971 | the LJM suffix in favor of the JM one. But we will | |
4972 | still accept LJM as a valid suffix for a reasonable | |
4973 | amount of time, just to allow ourselves to debug programs | |
4974 | compiled using an older version of GNAT. */ | |
4c4b4cd2 PH |
4975 | if (strcmp (str + 3, "LJM") == 0) |
4976 | return 1; | |
4977 | if (str[3] != 'X') | |
4978 | return 0; | |
1265e4aa JB |
4979 | if (str[4] == 'F' || str[4] == 'D' || str[4] == 'B' |
4980 | || str[4] == 'U' || str[4] == 'P') | |
4c4b4cd2 PH |
4981 | return 1; |
4982 | if (str[4] == 'R' && str[5] != 'T') | |
4983 | return 1; | |
4984 | return 0; | |
4985 | } | |
4986 | if (!isdigit (str[2])) | |
4987 | return 0; | |
4988 | for (k = 3; str[k] != '\0'; k += 1) | |
4989 | if (!isdigit (str[k]) && str[k] != '_') | |
4990 | return 0; | |
14f9c5c9 AS |
4991 | return 1; |
4992 | } | |
4c4b4cd2 | 4993 | if (str[0] == '$' && isdigit (str[1])) |
14f9c5c9 | 4994 | { |
4c4b4cd2 PH |
4995 | for (k = 2; str[k] != '\0'; k += 1) |
4996 | if (!isdigit (str[k]) && str[k] != '_') | |
4997 | return 0; | |
14f9c5c9 AS |
4998 | return 1; |
4999 | } | |
5000 | return 0; | |
5001 | } | |
d2e4a39e | 5002 | |
aeb5907d JB |
5003 | /* Return non-zero if the string starting at NAME and ending before |
5004 | NAME_END contains no capital letters. */ | |
529cad9c PH |
5005 | |
5006 | static int | |
5007 | is_valid_name_for_wild_match (const char *name0) | |
5008 | { | |
5009 | const char *decoded_name = ada_decode (name0); | |
5010 | int i; | |
5011 | ||
5823c3ef JB |
5012 | /* If the decoded name starts with an angle bracket, it means that |
5013 | NAME0 does not follow the GNAT encoding format. It should then | |
5014 | not be allowed as a possible wild match. */ | |
5015 | if (decoded_name[0] == '<') | |
5016 | return 0; | |
5017 | ||
529cad9c PH |
5018 | for (i=0; decoded_name[i] != '\0'; i++) |
5019 | if (isalpha (decoded_name[i]) && !islower (decoded_name[i])) | |
5020 | return 0; | |
5021 | ||
5022 | return 1; | |
5023 | } | |
5024 | ||
4c4b4cd2 PH |
5025 | /* True if NAME represents a name of the form A1.A2....An, n>=1 and |
5026 | PATN[0..PATN_LEN-1] = Ak.Ak+1.....An for some k >= 1. Ignores | |
5027 | informational suffixes of NAME (i.e., for which is_name_suffix is | |
5028 | true). */ | |
5029 | ||
14f9c5c9 | 5030 | static int |
4c4b4cd2 | 5031 | wild_match (const char *patn0, int patn_len, const char *name0) |
14f9c5c9 | 5032 | { |
5823c3ef JB |
5033 | char* match; |
5034 | const char* start; | |
5035 | start = name0; | |
5036 | while (1) | |
14f9c5c9 | 5037 | { |
5823c3ef JB |
5038 | match = strstr (start, patn0); |
5039 | if (match == NULL) | |
5040 | return 0; | |
5041 | if ((match == name0 | |
5042 | || match[-1] == '.' | |
5043 | || (match > name0 + 1 && match[-1] == '_' && match[-2] == '_') | |
5044 | || (match == name0 + 5 && strncmp ("_ada_", name0, 5) == 0)) | |
5045 | && is_name_suffix (match + patn_len)) | |
5046 | return (match == name0 || is_valid_name_for_wild_match (name0)); | |
5047 | start = match + 1; | |
96d887e8 | 5048 | } |
96d887e8 PH |
5049 | } |
5050 | ||
5051 | ||
5052 | /* Add symbols from BLOCK matching identifier NAME in DOMAIN to | |
5053 | vector *defn_symbols, updating the list of symbols in OBSTACKP | |
5054 | (if necessary). If WILD, treat as NAME with a wildcard prefix. | |
5055 | OBJFILE is the section containing BLOCK. | |
5056 | SYMTAB is recorded with each symbol added. */ | |
5057 | ||
5058 | static void | |
5059 | ada_add_block_symbols (struct obstack *obstackp, | |
76a01679 | 5060 | struct block *block, const char *name, |
96d887e8 | 5061 | domain_enum domain, struct objfile *objfile, |
2570f2b7 | 5062 | int wild) |
96d887e8 PH |
5063 | { |
5064 | struct dict_iterator iter; | |
5065 | int name_len = strlen (name); | |
5066 | /* A matching argument symbol, if any. */ | |
5067 | struct symbol *arg_sym; | |
5068 | /* Set true when we find a matching non-argument symbol. */ | |
5069 | int found_sym; | |
5070 | struct symbol *sym; | |
5071 | ||
5072 | arg_sym = NULL; | |
5073 | found_sym = 0; | |
5074 | if (wild) | |
5075 | { | |
5076 | struct symbol *sym; | |
5077 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
76a01679 | 5078 | { |
5eeb2539 AR |
5079 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
5080 | SYMBOL_DOMAIN (sym), domain) | |
1265e4aa | 5081 | && wild_match (name, name_len, SYMBOL_LINKAGE_NAME (sym))) |
76a01679 | 5082 | { |
2a2d4dc3 AS |
5083 | if (SYMBOL_CLASS (sym) == LOC_UNRESOLVED) |
5084 | continue; | |
5085 | else if (SYMBOL_IS_ARGUMENT (sym)) | |
5086 | arg_sym = sym; | |
5087 | else | |
5088 | { | |
76a01679 JB |
5089 | found_sym = 1; |
5090 | add_defn_to_vec (obstackp, | |
5091 | fixup_symbol_section (sym, objfile), | |
2570f2b7 | 5092 | block); |
76a01679 JB |
5093 | } |
5094 | } | |
5095 | } | |
96d887e8 PH |
5096 | } |
5097 | else | |
5098 | { | |
5099 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
76a01679 | 5100 | { |
5eeb2539 AR |
5101 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
5102 | SYMBOL_DOMAIN (sym), domain)) | |
76a01679 JB |
5103 | { |
5104 | int cmp = strncmp (name, SYMBOL_LINKAGE_NAME (sym), name_len); | |
5105 | if (cmp == 0 | |
5106 | && is_name_suffix (SYMBOL_LINKAGE_NAME (sym) + name_len)) | |
5107 | { | |
2a2d4dc3 AS |
5108 | if (SYMBOL_CLASS (sym) != LOC_UNRESOLVED) |
5109 | { | |
5110 | if (SYMBOL_IS_ARGUMENT (sym)) | |
5111 | arg_sym = sym; | |
5112 | else | |
5113 | { | |
5114 | found_sym = 1; | |
5115 | add_defn_to_vec (obstackp, | |
5116 | fixup_symbol_section (sym, objfile), | |
5117 | block); | |
5118 | } | |
5119 | } | |
76a01679 JB |
5120 | } |
5121 | } | |
5122 | } | |
96d887e8 PH |
5123 | } |
5124 | ||
5125 | if (!found_sym && arg_sym != NULL) | |
5126 | { | |
76a01679 JB |
5127 | add_defn_to_vec (obstackp, |
5128 | fixup_symbol_section (arg_sym, objfile), | |
2570f2b7 | 5129 | block); |
96d887e8 PH |
5130 | } |
5131 | ||
5132 | if (!wild) | |
5133 | { | |
5134 | arg_sym = NULL; | |
5135 | found_sym = 0; | |
5136 | ||
5137 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
76a01679 | 5138 | { |
5eeb2539 AR |
5139 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
5140 | SYMBOL_DOMAIN (sym), domain)) | |
76a01679 JB |
5141 | { |
5142 | int cmp; | |
5143 | ||
5144 | cmp = (int) '_' - (int) SYMBOL_LINKAGE_NAME (sym)[0]; | |
5145 | if (cmp == 0) | |
5146 | { | |
5147 | cmp = strncmp ("_ada_", SYMBOL_LINKAGE_NAME (sym), 5); | |
5148 | if (cmp == 0) | |
5149 | cmp = strncmp (name, SYMBOL_LINKAGE_NAME (sym) + 5, | |
5150 | name_len); | |
5151 | } | |
5152 | ||
5153 | if (cmp == 0 | |
5154 | && is_name_suffix (SYMBOL_LINKAGE_NAME (sym) + name_len + 5)) | |
5155 | { | |
2a2d4dc3 AS |
5156 | if (SYMBOL_CLASS (sym) != LOC_UNRESOLVED) |
5157 | { | |
5158 | if (SYMBOL_IS_ARGUMENT (sym)) | |
5159 | arg_sym = sym; | |
5160 | else | |
5161 | { | |
5162 | found_sym = 1; | |
5163 | add_defn_to_vec (obstackp, | |
5164 | fixup_symbol_section (sym, objfile), | |
5165 | block); | |
5166 | } | |
5167 | } | |
76a01679 JB |
5168 | } |
5169 | } | |
76a01679 | 5170 | } |
96d887e8 PH |
5171 | |
5172 | /* NOTE: This really shouldn't be needed for _ada_ symbols. | |
5173 | They aren't parameters, right? */ | |
5174 | if (!found_sym && arg_sym != NULL) | |
5175 | { | |
5176 | add_defn_to_vec (obstackp, | |
76a01679 | 5177 | fixup_symbol_section (arg_sym, objfile), |
2570f2b7 | 5178 | block); |
96d887e8 PH |
5179 | } |
5180 | } | |
5181 | } | |
5182 | \f | |
41d27058 JB |
5183 | |
5184 | /* Symbol Completion */ | |
5185 | ||
5186 | /* If SYM_NAME is a completion candidate for TEXT, return this symbol | |
5187 | name in a form that's appropriate for the completion. The result | |
5188 | does not need to be deallocated, but is only good until the next call. | |
5189 | ||
5190 | TEXT_LEN is equal to the length of TEXT. | |
5191 | Perform a wild match if WILD_MATCH is set. | |
5192 | ENCODED should be set if TEXT represents the start of a symbol name | |
5193 | in its encoded form. */ | |
5194 | ||
5195 | static const char * | |
5196 | symbol_completion_match (const char *sym_name, | |
5197 | const char *text, int text_len, | |
5198 | int wild_match, int encoded) | |
5199 | { | |
5200 | char *result; | |
5201 | const int verbatim_match = (text[0] == '<'); | |
5202 | int match = 0; | |
5203 | ||
5204 | if (verbatim_match) | |
5205 | { | |
5206 | /* Strip the leading angle bracket. */ | |
5207 | text = text + 1; | |
5208 | text_len--; | |
5209 | } | |
5210 | ||
5211 | /* First, test against the fully qualified name of the symbol. */ | |
5212 | ||
5213 | if (strncmp (sym_name, text, text_len) == 0) | |
5214 | match = 1; | |
5215 | ||
5216 | if (match && !encoded) | |
5217 | { | |
5218 | /* One needed check before declaring a positive match is to verify | |
5219 | that iff we are doing a verbatim match, the decoded version | |
5220 | of the symbol name starts with '<'. Otherwise, this symbol name | |
5221 | is not a suitable completion. */ | |
5222 | const char *sym_name_copy = sym_name; | |
5223 | int has_angle_bracket; | |
5224 | ||
5225 | sym_name = ada_decode (sym_name); | |
5226 | has_angle_bracket = (sym_name[0] == '<'); | |
5227 | match = (has_angle_bracket == verbatim_match); | |
5228 | sym_name = sym_name_copy; | |
5229 | } | |
5230 | ||
5231 | if (match && !verbatim_match) | |
5232 | { | |
5233 | /* When doing non-verbatim match, another check that needs to | |
5234 | be done is to verify that the potentially matching symbol name | |
5235 | does not include capital letters, because the ada-mode would | |
5236 | not be able to understand these symbol names without the | |
5237 | angle bracket notation. */ | |
5238 | const char *tmp; | |
5239 | ||
5240 | for (tmp = sym_name; *tmp != '\0' && !isupper (*tmp); tmp++); | |
5241 | if (*tmp != '\0') | |
5242 | match = 0; | |
5243 | } | |
5244 | ||
5245 | /* Second: Try wild matching... */ | |
5246 | ||
5247 | if (!match && wild_match) | |
5248 | { | |
5249 | /* Since we are doing wild matching, this means that TEXT | |
5250 | may represent an unqualified symbol name. We therefore must | |
5251 | also compare TEXT against the unqualified name of the symbol. */ | |
5252 | sym_name = ada_unqualified_name (ada_decode (sym_name)); | |
5253 | ||
5254 | if (strncmp (sym_name, text, text_len) == 0) | |
5255 | match = 1; | |
5256 | } | |
5257 | ||
5258 | /* Finally: If we found a mach, prepare the result to return. */ | |
5259 | ||
5260 | if (!match) | |
5261 | return NULL; | |
5262 | ||
5263 | if (verbatim_match) | |
5264 | sym_name = add_angle_brackets (sym_name); | |
5265 | ||
5266 | if (!encoded) | |
5267 | sym_name = ada_decode (sym_name); | |
5268 | ||
5269 | return sym_name; | |
5270 | } | |
5271 | ||
2ba95b9b JB |
5272 | typedef char *char_ptr; |
5273 | DEF_VEC_P (char_ptr); | |
5274 | ||
41d27058 JB |
5275 | /* A companion function to ada_make_symbol_completion_list(). |
5276 | Check if SYM_NAME represents a symbol which name would be suitable | |
5277 | to complete TEXT (TEXT_LEN is the length of TEXT), in which case | |
5278 | it is appended at the end of the given string vector SV. | |
5279 | ||
5280 | ORIG_TEXT is the string original string from the user command | |
5281 | that needs to be completed. WORD is the entire command on which | |
5282 | completion should be performed. These two parameters are used to | |
5283 | determine which part of the symbol name should be added to the | |
5284 | completion vector. | |
5285 | if WILD_MATCH is set, then wild matching is performed. | |
5286 | ENCODED should be set if TEXT represents a symbol name in its | |
5287 | encoded formed (in which case the completion should also be | |
5288 | encoded). */ | |
5289 | ||
5290 | static void | |
d6565258 | 5291 | symbol_completion_add (VEC(char_ptr) **sv, |
41d27058 JB |
5292 | const char *sym_name, |
5293 | const char *text, int text_len, | |
5294 | const char *orig_text, const char *word, | |
5295 | int wild_match, int encoded) | |
5296 | { | |
5297 | const char *match = symbol_completion_match (sym_name, text, text_len, | |
5298 | wild_match, encoded); | |
5299 | char *completion; | |
5300 | ||
5301 | if (match == NULL) | |
5302 | return; | |
5303 | ||
5304 | /* We found a match, so add the appropriate completion to the given | |
5305 | string vector. */ | |
5306 | ||
5307 | if (word == orig_text) | |
5308 | { | |
5309 | completion = xmalloc (strlen (match) + 5); | |
5310 | strcpy (completion, match); | |
5311 | } | |
5312 | else if (word > orig_text) | |
5313 | { | |
5314 | /* Return some portion of sym_name. */ | |
5315 | completion = xmalloc (strlen (match) + 5); | |
5316 | strcpy (completion, match + (word - orig_text)); | |
5317 | } | |
5318 | else | |
5319 | { | |
5320 | /* Return some of ORIG_TEXT plus sym_name. */ | |
5321 | completion = xmalloc (strlen (match) + (orig_text - word) + 5); | |
5322 | strncpy (completion, word, orig_text - word); | |
5323 | completion[orig_text - word] = '\0'; | |
5324 | strcat (completion, match); | |
5325 | } | |
5326 | ||
d6565258 | 5327 | VEC_safe_push (char_ptr, *sv, completion); |
41d27058 JB |
5328 | } |
5329 | ||
5330 | /* Return a list of possible symbol names completing TEXT0. The list | |
5331 | is NULL terminated. WORD is the entire command on which completion | |
5332 | is made. */ | |
5333 | ||
5334 | static char ** | |
5335 | ada_make_symbol_completion_list (char *text0, char *word) | |
5336 | { | |
5337 | char *text; | |
5338 | int text_len; | |
5339 | int wild_match; | |
5340 | int encoded; | |
2ba95b9b | 5341 | VEC(char_ptr) *completions = VEC_alloc (char_ptr, 128); |
41d27058 JB |
5342 | struct symbol *sym; |
5343 | struct symtab *s; | |
5344 | struct partial_symtab *ps; | |
5345 | struct minimal_symbol *msymbol; | |
5346 | struct objfile *objfile; | |
5347 | struct block *b, *surrounding_static_block = 0; | |
5348 | int i; | |
5349 | struct dict_iterator iter; | |
5350 | ||
5351 | if (text0[0] == '<') | |
5352 | { | |
5353 | text = xstrdup (text0); | |
5354 | make_cleanup (xfree, text); | |
5355 | text_len = strlen (text); | |
5356 | wild_match = 0; | |
5357 | encoded = 1; | |
5358 | } | |
5359 | else | |
5360 | { | |
5361 | text = xstrdup (ada_encode (text0)); | |
5362 | make_cleanup (xfree, text); | |
5363 | text_len = strlen (text); | |
5364 | for (i = 0; i < text_len; i++) | |
5365 | text[i] = tolower (text[i]); | |
5366 | ||
5367 | encoded = (strstr (text0, "__") != NULL); | |
5368 | /* If the name contains a ".", then the user is entering a fully | |
5369 | qualified entity name, and the match must not be done in wild | |
5370 | mode. Similarly, if the user wants to complete what looks like | |
5371 | an encoded name, the match must not be done in wild mode. */ | |
5372 | wild_match = (strchr (text0, '.') == NULL && !encoded); | |
5373 | } | |
5374 | ||
5375 | /* First, look at the partial symtab symbols. */ | |
5376 | ALL_PSYMTABS (objfile, ps) | |
5377 | { | |
5378 | struct partial_symbol **psym; | |
5379 | ||
5380 | /* If the psymtab's been read in we'll get it when we search | |
5381 | through the blockvector. */ | |
5382 | if (ps->readin) | |
5383 | continue; | |
5384 | ||
5385 | for (psym = objfile->global_psymbols.list + ps->globals_offset; | |
5386 | psym < (objfile->global_psymbols.list + ps->globals_offset | |
5387 | + ps->n_global_syms); psym++) | |
5388 | { | |
5389 | QUIT; | |
d6565258 | 5390 | symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (*psym), |
41d27058 JB |
5391 | text, text_len, text0, word, |
5392 | wild_match, encoded); | |
5393 | } | |
5394 | ||
5395 | for (psym = objfile->static_psymbols.list + ps->statics_offset; | |
5396 | psym < (objfile->static_psymbols.list + ps->statics_offset | |
5397 | + ps->n_static_syms); psym++) | |
5398 | { | |
5399 | QUIT; | |
d6565258 | 5400 | symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (*psym), |
41d27058 JB |
5401 | text, text_len, text0, word, |
5402 | wild_match, encoded); | |
5403 | } | |
5404 | } | |
5405 | ||
5406 | /* At this point scan through the misc symbol vectors and add each | |
5407 | symbol you find to the list. Eventually we want to ignore | |
5408 | anything that isn't a text symbol (everything else will be | |
5409 | handled by the psymtab code above). */ | |
5410 | ||
5411 | ALL_MSYMBOLS (objfile, msymbol) | |
5412 | { | |
5413 | QUIT; | |
d6565258 | 5414 | symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (msymbol), |
41d27058 JB |
5415 | text, text_len, text0, word, wild_match, encoded); |
5416 | } | |
5417 | ||
5418 | /* Search upwards from currently selected frame (so that we can | |
5419 | complete on local vars. */ | |
5420 | ||
5421 | for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b)) | |
5422 | { | |
5423 | if (!BLOCK_SUPERBLOCK (b)) | |
5424 | surrounding_static_block = b; /* For elmin of dups */ | |
5425 | ||
5426 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
5427 | { | |
d6565258 | 5428 | symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (sym), |
41d27058 JB |
5429 | text, text_len, text0, word, |
5430 | wild_match, encoded); | |
5431 | } | |
5432 | } | |
5433 | ||
5434 | /* Go through the symtabs and check the externs and statics for | |
5435 | symbols which match. */ | |
5436 | ||
5437 | ALL_SYMTABS (objfile, s) | |
5438 | { | |
5439 | QUIT; | |
5440 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); | |
5441 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
5442 | { | |
d6565258 | 5443 | symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (sym), |
41d27058 JB |
5444 | text, text_len, text0, word, |
5445 | wild_match, encoded); | |
5446 | } | |
5447 | } | |
5448 | ||
5449 | ALL_SYMTABS (objfile, s) | |
5450 | { | |
5451 | QUIT; | |
5452 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
5453 | /* Don't do this block twice. */ | |
5454 | if (b == surrounding_static_block) | |
5455 | continue; | |
5456 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
5457 | { | |
d6565258 | 5458 | symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (sym), |
41d27058 JB |
5459 | text, text_len, text0, word, |
5460 | wild_match, encoded); | |
5461 | } | |
5462 | } | |
5463 | ||
5464 | /* Append the closing NULL entry. */ | |
2ba95b9b | 5465 | VEC_safe_push (char_ptr, completions, NULL); |
41d27058 | 5466 | |
2ba95b9b JB |
5467 | /* Make a copy of the COMPLETIONS VEC before we free it, and then |
5468 | return the copy. It's unfortunate that we have to make a copy | |
5469 | of an array that we're about to destroy, but there is nothing much | |
5470 | we can do about it. Fortunately, it's typically not a very large | |
5471 | array. */ | |
5472 | { | |
5473 | const size_t completions_size = | |
5474 | VEC_length (char_ptr, completions) * sizeof (char *); | |
5475 | char **result = malloc (completions_size); | |
5476 | ||
5477 | memcpy (result, VEC_address (char_ptr, completions), completions_size); | |
5478 | ||
5479 | VEC_free (char_ptr, completions); | |
5480 | return result; | |
5481 | } | |
41d27058 JB |
5482 | } |
5483 | ||
963a6417 | 5484 | /* Field Access */ |
96d887e8 | 5485 | |
73fb9985 JB |
5486 | /* Return non-zero if TYPE is a pointer to the GNAT dispatch table used |
5487 | for tagged types. */ | |
5488 | ||
5489 | static int | |
5490 | ada_is_dispatch_table_ptr_type (struct type *type) | |
5491 | { | |
5492 | char *name; | |
5493 | ||
5494 | if (TYPE_CODE (type) != TYPE_CODE_PTR) | |
5495 | return 0; | |
5496 | ||
5497 | name = TYPE_NAME (TYPE_TARGET_TYPE (type)); | |
5498 | if (name == NULL) | |
5499 | return 0; | |
5500 | ||
5501 | return (strcmp (name, "ada__tags__dispatch_table") == 0); | |
5502 | } | |
5503 | ||
963a6417 PH |
5504 | /* True if field number FIELD_NUM in struct or union type TYPE is supposed |
5505 | to be invisible to users. */ | |
96d887e8 | 5506 | |
963a6417 PH |
5507 | int |
5508 | ada_is_ignored_field (struct type *type, int field_num) | |
96d887e8 | 5509 | { |
963a6417 PH |
5510 | if (field_num < 0 || field_num > TYPE_NFIELDS (type)) |
5511 | return 1; | |
73fb9985 JB |
5512 | |
5513 | /* Check the name of that field. */ | |
5514 | { | |
5515 | const char *name = TYPE_FIELD_NAME (type, field_num); | |
5516 | ||
5517 | /* Anonymous field names should not be printed. | |
5518 | brobecker/2007-02-20: I don't think this can actually happen | |
5519 | but we don't want to print the value of annonymous fields anyway. */ | |
5520 | if (name == NULL) | |
5521 | return 1; | |
5522 | ||
5523 | /* A field named "_parent" is internally generated by GNAT for | |
5524 | tagged types, and should not be printed either. */ | |
5525 | if (name[0] == '_' && strncmp (name, "_parent", 7) != 0) | |
5526 | return 1; | |
5527 | } | |
5528 | ||
5529 | /* If this is the dispatch table of a tagged type, then ignore. */ | |
5530 | if (ada_is_tagged_type (type, 1) | |
5531 | && ada_is_dispatch_table_ptr_type (TYPE_FIELD_TYPE (type, field_num))) | |
5532 | return 1; | |
5533 | ||
5534 | /* Not a special field, so it should not be ignored. */ | |
5535 | return 0; | |
963a6417 | 5536 | } |
96d887e8 | 5537 | |
963a6417 PH |
5538 | /* True iff TYPE has a tag field. If REFOK, then TYPE may also be a |
5539 | pointer or reference type whose ultimate target has a tag field. */ | |
96d887e8 | 5540 | |
963a6417 PH |
5541 | int |
5542 | ada_is_tagged_type (struct type *type, int refok) | |
5543 | { | |
5544 | return (ada_lookup_struct_elt_type (type, "_tag", refok, 1, NULL) != NULL); | |
5545 | } | |
96d887e8 | 5546 | |
963a6417 | 5547 | /* True iff TYPE represents the type of X'Tag */ |
96d887e8 | 5548 | |
963a6417 PH |
5549 | int |
5550 | ada_is_tag_type (struct type *type) | |
5551 | { | |
5552 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_PTR) | |
5553 | return 0; | |
5554 | else | |
96d887e8 | 5555 | { |
963a6417 PH |
5556 | const char *name = ada_type_name (TYPE_TARGET_TYPE (type)); |
5557 | return (name != NULL | |
5558 | && strcmp (name, "ada__tags__dispatch_table") == 0); | |
96d887e8 | 5559 | } |
96d887e8 PH |
5560 | } |
5561 | ||
963a6417 | 5562 | /* The type of the tag on VAL. */ |
76a01679 | 5563 | |
963a6417 PH |
5564 | struct type * |
5565 | ada_tag_type (struct value *val) | |
96d887e8 | 5566 | { |
df407dfe | 5567 | return ada_lookup_struct_elt_type (value_type (val), "_tag", 1, 0, NULL); |
963a6417 | 5568 | } |
96d887e8 | 5569 | |
963a6417 | 5570 | /* The value of the tag on VAL. */ |
96d887e8 | 5571 | |
963a6417 PH |
5572 | struct value * |
5573 | ada_value_tag (struct value *val) | |
5574 | { | |
03ee6b2e | 5575 | return ada_value_struct_elt (val, "_tag", 0); |
96d887e8 PH |
5576 | } |
5577 | ||
963a6417 PH |
5578 | /* The value of the tag on the object of type TYPE whose contents are |
5579 | saved at VALADDR, if it is non-null, or is at memory address | |
5580 | ADDRESS. */ | |
96d887e8 | 5581 | |
963a6417 | 5582 | static struct value * |
10a2c479 | 5583 | value_tag_from_contents_and_address (struct type *type, |
fc1a4b47 | 5584 | const gdb_byte *valaddr, |
963a6417 | 5585 | CORE_ADDR address) |
96d887e8 | 5586 | { |
963a6417 PH |
5587 | int tag_byte_offset, dummy1, dummy2; |
5588 | struct type *tag_type; | |
5589 | if (find_struct_field ("_tag", type, 0, &tag_type, &tag_byte_offset, | |
52ce6436 | 5590 | NULL, NULL, NULL)) |
96d887e8 | 5591 | { |
fc1a4b47 | 5592 | const gdb_byte *valaddr1 = ((valaddr == NULL) |
10a2c479 AC |
5593 | ? NULL |
5594 | : valaddr + tag_byte_offset); | |
963a6417 | 5595 | CORE_ADDR address1 = (address == 0) ? 0 : address + tag_byte_offset; |
96d887e8 | 5596 | |
963a6417 | 5597 | return value_from_contents_and_address (tag_type, valaddr1, address1); |
96d887e8 | 5598 | } |
963a6417 PH |
5599 | return NULL; |
5600 | } | |
96d887e8 | 5601 | |
963a6417 PH |
5602 | static struct type * |
5603 | type_from_tag (struct value *tag) | |
5604 | { | |
5605 | const char *type_name = ada_tag_name (tag); | |
5606 | if (type_name != NULL) | |
5607 | return ada_find_any_type (ada_encode (type_name)); | |
5608 | return NULL; | |
5609 | } | |
96d887e8 | 5610 | |
963a6417 PH |
5611 | struct tag_args |
5612 | { | |
5613 | struct value *tag; | |
5614 | char *name; | |
5615 | }; | |
4c4b4cd2 | 5616 | |
529cad9c PH |
5617 | |
5618 | static int ada_tag_name_1 (void *); | |
5619 | static int ada_tag_name_2 (struct tag_args *); | |
5620 | ||
4c4b4cd2 PH |
5621 | /* Wrapper function used by ada_tag_name. Given a struct tag_args* |
5622 | value ARGS, sets ARGS->name to the tag name of ARGS->tag. | |
5623 | The value stored in ARGS->name is valid until the next call to | |
5624 | ada_tag_name_1. */ | |
5625 | ||
5626 | static int | |
5627 | ada_tag_name_1 (void *args0) | |
5628 | { | |
5629 | struct tag_args *args = (struct tag_args *) args0; | |
5630 | static char name[1024]; | |
76a01679 | 5631 | char *p; |
4c4b4cd2 PH |
5632 | struct value *val; |
5633 | args->name = NULL; | |
03ee6b2e | 5634 | val = ada_value_struct_elt (args->tag, "tsd", 1); |
529cad9c PH |
5635 | if (val == NULL) |
5636 | return ada_tag_name_2 (args); | |
03ee6b2e | 5637 | val = ada_value_struct_elt (val, "expanded_name", 1); |
529cad9c PH |
5638 | if (val == NULL) |
5639 | return 0; | |
5640 | read_memory_string (value_as_address (val), name, sizeof (name) - 1); | |
5641 | for (p = name; *p != '\0'; p += 1) | |
5642 | if (isalpha (*p)) | |
5643 | *p = tolower (*p); | |
5644 | args->name = name; | |
5645 | return 0; | |
5646 | } | |
5647 | ||
5648 | /* Utility function for ada_tag_name_1 that tries the second | |
5649 | representation for the dispatch table (in which there is no | |
5650 | explicit 'tsd' field in the referent of the tag pointer, and instead | |
5651 | the tsd pointer is stored just before the dispatch table. */ | |
5652 | ||
5653 | static int | |
5654 | ada_tag_name_2 (struct tag_args *args) | |
5655 | { | |
5656 | struct type *info_type; | |
5657 | static char name[1024]; | |
5658 | char *p; | |
5659 | struct value *val, *valp; | |
5660 | ||
5661 | args->name = NULL; | |
5662 | info_type = ada_find_any_type ("ada__tags__type_specific_data"); | |
5663 | if (info_type == NULL) | |
5664 | return 0; | |
5665 | info_type = lookup_pointer_type (lookup_pointer_type (info_type)); | |
5666 | valp = value_cast (info_type, args->tag); | |
5667 | if (valp == NULL) | |
5668 | return 0; | |
89eef114 UW |
5669 | val = value_ind (value_ptradd (valp, |
5670 | value_from_longest (builtin_type_int8, -1))); | |
4c4b4cd2 PH |
5671 | if (val == NULL) |
5672 | return 0; | |
03ee6b2e | 5673 | val = ada_value_struct_elt (val, "expanded_name", 1); |
4c4b4cd2 PH |
5674 | if (val == NULL) |
5675 | return 0; | |
5676 | read_memory_string (value_as_address (val), name, sizeof (name) - 1); | |
5677 | for (p = name; *p != '\0'; p += 1) | |
5678 | if (isalpha (*p)) | |
5679 | *p = tolower (*p); | |
5680 | args->name = name; | |
5681 | return 0; | |
5682 | } | |
5683 | ||
5684 | /* The type name of the dynamic type denoted by the 'tag value TAG, as | |
5685 | * a C string. */ | |
5686 | ||
5687 | const char * | |
5688 | ada_tag_name (struct value *tag) | |
5689 | { | |
5690 | struct tag_args args; | |
df407dfe | 5691 | if (!ada_is_tag_type (value_type (tag))) |
4c4b4cd2 | 5692 | return NULL; |
76a01679 | 5693 | args.tag = tag; |
4c4b4cd2 PH |
5694 | args.name = NULL; |
5695 | catch_errors (ada_tag_name_1, &args, NULL, RETURN_MASK_ALL); | |
5696 | return args.name; | |
5697 | } | |
5698 | ||
5699 | /* The parent type of TYPE, or NULL if none. */ | |
14f9c5c9 | 5700 | |
d2e4a39e | 5701 | struct type * |
ebf56fd3 | 5702 | ada_parent_type (struct type *type) |
14f9c5c9 AS |
5703 | { |
5704 | int i; | |
5705 | ||
61ee279c | 5706 | type = ada_check_typedef (type); |
14f9c5c9 AS |
5707 | |
5708 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT) | |
5709 | return NULL; | |
5710 | ||
5711 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
5712 | if (ada_is_parent_field (type, i)) | |
0c1f74cf JB |
5713 | { |
5714 | struct type *parent_type = TYPE_FIELD_TYPE (type, i); | |
5715 | ||
5716 | /* If the _parent field is a pointer, then dereference it. */ | |
5717 | if (TYPE_CODE (parent_type) == TYPE_CODE_PTR) | |
5718 | parent_type = TYPE_TARGET_TYPE (parent_type); | |
5719 | /* If there is a parallel XVS type, get the actual base type. */ | |
5720 | parent_type = ada_get_base_type (parent_type); | |
5721 | ||
5722 | return ada_check_typedef (parent_type); | |
5723 | } | |
14f9c5c9 AS |
5724 | |
5725 | return NULL; | |
5726 | } | |
5727 | ||
4c4b4cd2 PH |
5728 | /* True iff field number FIELD_NUM of structure type TYPE contains the |
5729 | parent-type (inherited) fields of a derived type. Assumes TYPE is | |
5730 | a structure type with at least FIELD_NUM+1 fields. */ | |
14f9c5c9 AS |
5731 | |
5732 | int | |
ebf56fd3 | 5733 | ada_is_parent_field (struct type *type, int field_num) |
14f9c5c9 | 5734 | { |
61ee279c | 5735 | const char *name = TYPE_FIELD_NAME (ada_check_typedef (type), field_num); |
4c4b4cd2 PH |
5736 | return (name != NULL |
5737 | && (strncmp (name, "PARENT", 6) == 0 | |
5738 | || strncmp (name, "_parent", 7) == 0)); | |
14f9c5c9 AS |
5739 | } |
5740 | ||
4c4b4cd2 | 5741 | /* True iff field number FIELD_NUM of structure type TYPE is a |
14f9c5c9 | 5742 | transparent wrapper field (which should be silently traversed when doing |
4c4b4cd2 | 5743 | field selection and flattened when printing). Assumes TYPE is a |
14f9c5c9 | 5744 | structure type with at least FIELD_NUM+1 fields. Such fields are always |
4c4b4cd2 | 5745 | structures. */ |
14f9c5c9 AS |
5746 | |
5747 | int | |
ebf56fd3 | 5748 | ada_is_wrapper_field (struct type *type, int field_num) |
14f9c5c9 | 5749 | { |
d2e4a39e AS |
5750 | const char *name = TYPE_FIELD_NAME (type, field_num); |
5751 | return (name != NULL | |
4c4b4cd2 PH |
5752 | && (strncmp (name, "PARENT", 6) == 0 |
5753 | || strcmp (name, "REP") == 0 | |
5754 | || strncmp (name, "_parent", 7) == 0 | |
5755 | || name[0] == 'S' || name[0] == 'R' || name[0] == 'O')); | |
14f9c5c9 AS |
5756 | } |
5757 | ||
4c4b4cd2 PH |
5758 | /* True iff field number FIELD_NUM of structure or union type TYPE |
5759 | is a variant wrapper. Assumes TYPE is a structure type with at least | |
5760 | FIELD_NUM+1 fields. */ | |
14f9c5c9 AS |
5761 | |
5762 | int | |
ebf56fd3 | 5763 | ada_is_variant_part (struct type *type, int field_num) |
14f9c5c9 | 5764 | { |
d2e4a39e | 5765 | struct type *field_type = TYPE_FIELD_TYPE (type, field_num); |
14f9c5c9 | 5766 | return (TYPE_CODE (field_type) == TYPE_CODE_UNION |
4c4b4cd2 | 5767 | || (is_dynamic_field (type, field_num) |
c3e5cd34 PH |
5768 | && (TYPE_CODE (TYPE_TARGET_TYPE (field_type)) |
5769 | == TYPE_CODE_UNION))); | |
14f9c5c9 AS |
5770 | } |
5771 | ||
5772 | /* Assuming that VAR_TYPE is a variant wrapper (type of the variant part) | |
4c4b4cd2 | 5773 | whose discriminants are contained in the record type OUTER_TYPE, |
14f9c5c9 AS |
5774 | returns the type of the controlling discriminant for the variant. */ |
5775 | ||
d2e4a39e | 5776 | struct type * |
ebf56fd3 | 5777 | ada_variant_discrim_type (struct type *var_type, struct type *outer_type) |
14f9c5c9 | 5778 | { |
d2e4a39e | 5779 | char *name = ada_variant_discrim_name (var_type); |
76a01679 | 5780 | struct type *type = |
4c4b4cd2 | 5781 | ada_lookup_struct_elt_type (outer_type, name, 1, 1, NULL); |
14f9c5c9 | 5782 | if (type == NULL) |
6d84d3d8 | 5783 | return builtin_type_int32; |
14f9c5c9 AS |
5784 | else |
5785 | return type; | |
5786 | } | |
5787 | ||
4c4b4cd2 | 5788 | /* Assuming that TYPE is the type of a variant wrapper, and FIELD_NUM is a |
14f9c5c9 | 5789 | valid field number within it, returns 1 iff field FIELD_NUM of TYPE |
4c4b4cd2 | 5790 | represents a 'when others' clause; otherwise 0. */ |
14f9c5c9 AS |
5791 | |
5792 | int | |
ebf56fd3 | 5793 | ada_is_others_clause (struct type *type, int field_num) |
14f9c5c9 | 5794 | { |
d2e4a39e | 5795 | const char *name = TYPE_FIELD_NAME (type, field_num); |
14f9c5c9 AS |
5796 | return (name != NULL && name[0] == 'O'); |
5797 | } | |
5798 | ||
5799 | /* Assuming that TYPE0 is the type of the variant part of a record, | |
4c4b4cd2 PH |
5800 | returns the name of the discriminant controlling the variant. |
5801 | The value is valid until the next call to ada_variant_discrim_name. */ | |
14f9c5c9 | 5802 | |
d2e4a39e | 5803 | char * |
ebf56fd3 | 5804 | ada_variant_discrim_name (struct type *type0) |
14f9c5c9 | 5805 | { |
d2e4a39e | 5806 | static char *result = NULL; |
14f9c5c9 | 5807 | static size_t result_len = 0; |
d2e4a39e AS |
5808 | struct type *type; |
5809 | const char *name; | |
5810 | const char *discrim_end; | |
5811 | const char *discrim_start; | |
14f9c5c9 AS |
5812 | |
5813 | if (TYPE_CODE (type0) == TYPE_CODE_PTR) | |
5814 | type = TYPE_TARGET_TYPE (type0); | |
5815 | else | |
5816 | type = type0; | |
5817 | ||
5818 | name = ada_type_name (type); | |
5819 | ||
5820 | if (name == NULL || name[0] == '\000') | |
5821 | return ""; | |
5822 | ||
5823 | for (discrim_end = name + strlen (name) - 6; discrim_end != name; | |
5824 | discrim_end -= 1) | |
5825 | { | |
4c4b4cd2 PH |
5826 | if (strncmp (discrim_end, "___XVN", 6) == 0) |
5827 | break; | |
14f9c5c9 AS |
5828 | } |
5829 | if (discrim_end == name) | |
5830 | return ""; | |
5831 | ||
d2e4a39e | 5832 | for (discrim_start = discrim_end; discrim_start != name + 3; |
14f9c5c9 AS |
5833 | discrim_start -= 1) |
5834 | { | |
d2e4a39e | 5835 | if (discrim_start == name + 1) |
4c4b4cd2 | 5836 | return ""; |
76a01679 | 5837 | if ((discrim_start > name + 3 |
4c4b4cd2 PH |
5838 | && strncmp (discrim_start - 3, "___", 3) == 0) |
5839 | || discrim_start[-1] == '.') | |
5840 | break; | |
14f9c5c9 AS |
5841 | } |
5842 | ||
5843 | GROW_VECT (result, result_len, discrim_end - discrim_start + 1); | |
5844 | strncpy (result, discrim_start, discrim_end - discrim_start); | |
d2e4a39e | 5845 | result[discrim_end - discrim_start] = '\0'; |
14f9c5c9 AS |
5846 | return result; |
5847 | } | |
5848 | ||
4c4b4cd2 PH |
5849 | /* Scan STR for a subtype-encoded number, beginning at position K. |
5850 | Put the position of the character just past the number scanned in | |
5851 | *NEW_K, if NEW_K!=NULL. Put the scanned number in *R, if R!=NULL. | |
5852 | Return 1 if there was a valid number at the given position, and 0 | |
5853 | otherwise. A "subtype-encoded" number consists of the absolute value | |
5854 | in decimal, followed by the letter 'm' to indicate a negative number. | |
5855 | Assumes 0m does not occur. */ | |
14f9c5c9 AS |
5856 | |
5857 | int | |
d2e4a39e | 5858 | ada_scan_number (const char str[], int k, LONGEST * R, int *new_k) |
14f9c5c9 AS |
5859 | { |
5860 | ULONGEST RU; | |
5861 | ||
d2e4a39e | 5862 | if (!isdigit (str[k])) |
14f9c5c9 AS |
5863 | return 0; |
5864 | ||
4c4b4cd2 | 5865 | /* Do it the hard way so as not to make any assumption about |
14f9c5c9 | 5866 | the relationship of unsigned long (%lu scan format code) and |
4c4b4cd2 | 5867 | LONGEST. */ |
14f9c5c9 AS |
5868 | RU = 0; |
5869 | while (isdigit (str[k])) | |
5870 | { | |
d2e4a39e | 5871 | RU = RU * 10 + (str[k] - '0'); |
14f9c5c9 AS |
5872 | k += 1; |
5873 | } | |
5874 | ||
d2e4a39e | 5875 | if (str[k] == 'm') |
14f9c5c9 AS |
5876 | { |
5877 | if (R != NULL) | |
4c4b4cd2 | 5878 | *R = (-(LONGEST) (RU - 1)) - 1; |
14f9c5c9 AS |
5879 | k += 1; |
5880 | } | |
5881 | else if (R != NULL) | |
5882 | *R = (LONGEST) RU; | |
5883 | ||
4c4b4cd2 | 5884 | /* NOTE on the above: Technically, C does not say what the results of |
14f9c5c9 AS |
5885 | - (LONGEST) RU or (LONGEST) -RU are for RU == largest positive |
5886 | number representable as a LONGEST (although either would probably work | |
5887 | in most implementations). When RU>0, the locution in the then branch | |
4c4b4cd2 | 5888 | above is always equivalent to the negative of RU. */ |
14f9c5c9 AS |
5889 | |
5890 | if (new_k != NULL) | |
5891 | *new_k = k; | |
5892 | return 1; | |
5893 | } | |
5894 | ||
4c4b4cd2 PH |
5895 | /* Assuming that TYPE is a variant part wrapper type (a VARIANTS field), |
5896 | and FIELD_NUM is a valid field number within it, returns 1 iff VAL is | |
5897 | in the range encoded by field FIELD_NUM of TYPE; otherwise 0. */ | |
14f9c5c9 | 5898 | |
d2e4a39e | 5899 | int |
ebf56fd3 | 5900 | ada_in_variant (LONGEST val, struct type *type, int field_num) |
14f9c5c9 | 5901 | { |
d2e4a39e | 5902 | const char *name = TYPE_FIELD_NAME (type, field_num); |
14f9c5c9 AS |
5903 | int p; |
5904 | ||
5905 | p = 0; | |
5906 | while (1) | |
5907 | { | |
d2e4a39e | 5908 | switch (name[p]) |
4c4b4cd2 PH |
5909 | { |
5910 | case '\0': | |
5911 | return 0; | |
5912 | case 'S': | |
5913 | { | |
5914 | LONGEST W; | |
5915 | if (!ada_scan_number (name, p + 1, &W, &p)) | |
5916 | return 0; | |
5917 | if (val == W) | |
5918 | return 1; | |
5919 | break; | |
5920 | } | |
5921 | case 'R': | |
5922 | { | |
5923 | LONGEST L, U; | |
5924 | if (!ada_scan_number (name, p + 1, &L, &p) | |
5925 | || name[p] != 'T' || !ada_scan_number (name, p + 1, &U, &p)) | |
5926 | return 0; | |
5927 | if (val >= L && val <= U) | |
5928 | return 1; | |
5929 | break; | |
5930 | } | |
5931 | case 'O': | |
5932 | return 1; | |
5933 | default: | |
5934 | return 0; | |
5935 | } | |
5936 | } | |
5937 | } | |
5938 | ||
5939 | /* FIXME: Lots of redundancy below. Try to consolidate. */ | |
5940 | ||
5941 | /* Given a value ARG1 (offset by OFFSET bytes) of a struct or union type | |
5942 | ARG_TYPE, extract and return the value of one of its (non-static) | |
5943 | fields. FIELDNO says which field. Differs from value_primitive_field | |
5944 | only in that it can handle packed values of arbitrary type. */ | |
14f9c5c9 | 5945 | |
4c4b4cd2 | 5946 | static struct value * |
d2e4a39e | 5947 | ada_value_primitive_field (struct value *arg1, int offset, int fieldno, |
4c4b4cd2 | 5948 | struct type *arg_type) |
14f9c5c9 | 5949 | { |
14f9c5c9 AS |
5950 | struct type *type; |
5951 | ||
61ee279c | 5952 | arg_type = ada_check_typedef (arg_type); |
14f9c5c9 AS |
5953 | type = TYPE_FIELD_TYPE (arg_type, fieldno); |
5954 | ||
4c4b4cd2 | 5955 | /* Handle packed fields. */ |
14f9c5c9 AS |
5956 | |
5957 | if (TYPE_FIELD_BITSIZE (arg_type, fieldno) != 0) | |
5958 | { | |
5959 | int bit_pos = TYPE_FIELD_BITPOS (arg_type, fieldno); | |
5960 | int bit_size = TYPE_FIELD_BITSIZE (arg_type, fieldno); | |
d2e4a39e | 5961 | |
0fd88904 | 5962 | return ada_value_primitive_packed_val (arg1, value_contents (arg1), |
4c4b4cd2 PH |
5963 | offset + bit_pos / 8, |
5964 | bit_pos % 8, bit_size, type); | |
14f9c5c9 AS |
5965 | } |
5966 | else | |
5967 | return value_primitive_field (arg1, offset, fieldno, arg_type); | |
5968 | } | |
5969 | ||
52ce6436 PH |
5970 | /* Find field with name NAME in object of type TYPE. If found, |
5971 | set the following for each argument that is non-null: | |
5972 | - *FIELD_TYPE_P to the field's type; | |
5973 | - *BYTE_OFFSET_P to OFFSET + the byte offset of the field within | |
5974 | an object of that type; | |
5975 | - *BIT_OFFSET_P to the bit offset modulo byte size of the field; | |
5976 | - *BIT_SIZE_P to its size in bits if the field is packed, and | |
5977 | 0 otherwise; | |
5978 | If INDEX_P is non-null, increment *INDEX_P by the number of source-visible | |
5979 | fields up to but not including the desired field, or by the total | |
5980 | number of fields if not found. A NULL value of NAME never | |
5981 | matches; the function just counts visible fields in this case. | |
5982 | ||
5983 | Returns 1 if found, 0 otherwise. */ | |
5984 | ||
4c4b4cd2 | 5985 | static int |
76a01679 JB |
5986 | find_struct_field (char *name, struct type *type, int offset, |
5987 | struct type **field_type_p, | |
52ce6436 PH |
5988 | int *byte_offset_p, int *bit_offset_p, int *bit_size_p, |
5989 | int *index_p) | |
4c4b4cd2 PH |
5990 | { |
5991 | int i; | |
5992 | ||
61ee279c | 5993 | type = ada_check_typedef (type); |
76a01679 | 5994 | |
52ce6436 PH |
5995 | if (field_type_p != NULL) |
5996 | *field_type_p = NULL; | |
5997 | if (byte_offset_p != NULL) | |
d5d6fca5 | 5998 | *byte_offset_p = 0; |
52ce6436 PH |
5999 | if (bit_offset_p != NULL) |
6000 | *bit_offset_p = 0; | |
6001 | if (bit_size_p != NULL) | |
6002 | *bit_size_p = 0; | |
6003 | ||
6004 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
4c4b4cd2 PH |
6005 | { |
6006 | int bit_pos = TYPE_FIELD_BITPOS (type, i); | |
6007 | int fld_offset = offset + bit_pos / 8; | |
6008 | char *t_field_name = TYPE_FIELD_NAME (type, i); | |
76a01679 | 6009 | |
4c4b4cd2 PH |
6010 | if (t_field_name == NULL) |
6011 | continue; | |
6012 | ||
52ce6436 | 6013 | else if (name != NULL && field_name_match (t_field_name, name)) |
76a01679 JB |
6014 | { |
6015 | int bit_size = TYPE_FIELD_BITSIZE (type, i); | |
52ce6436 PH |
6016 | if (field_type_p != NULL) |
6017 | *field_type_p = TYPE_FIELD_TYPE (type, i); | |
6018 | if (byte_offset_p != NULL) | |
6019 | *byte_offset_p = fld_offset; | |
6020 | if (bit_offset_p != NULL) | |
6021 | *bit_offset_p = bit_pos % 8; | |
6022 | if (bit_size_p != NULL) | |
6023 | *bit_size_p = bit_size; | |
76a01679 JB |
6024 | return 1; |
6025 | } | |
4c4b4cd2 PH |
6026 | else if (ada_is_wrapper_field (type, i)) |
6027 | { | |
52ce6436 PH |
6028 | if (find_struct_field (name, TYPE_FIELD_TYPE (type, i), fld_offset, |
6029 | field_type_p, byte_offset_p, bit_offset_p, | |
6030 | bit_size_p, index_p)) | |
76a01679 JB |
6031 | return 1; |
6032 | } | |
4c4b4cd2 PH |
6033 | else if (ada_is_variant_part (type, i)) |
6034 | { | |
52ce6436 PH |
6035 | /* PNH: Wait. Do we ever execute this section, or is ARG always of |
6036 | fixed type?? */ | |
4c4b4cd2 | 6037 | int j; |
52ce6436 PH |
6038 | struct type *field_type |
6039 | = ada_check_typedef (TYPE_FIELD_TYPE (type, i)); | |
4c4b4cd2 | 6040 | |
52ce6436 | 6041 | for (j = 0; j < TYPE_NFIELDS (field_type); j += 1) |
4c4b4cd2 | 6042 | { |
76a01679 JB |
6043 | if (find_struct_field (name, TYPE_FIELD_TYPE (field_type, j), |
6044 | fld_offset | |
6045 | + TYPE_FIELD_BITPOS (field_type, j) / 8, | |
6046 | field_type_p, byte_offset_p, | |
52ce6436 | 6047 | bit_offset_p, bit_size_p, index_p)) |
76a01679 | 6048 | return 1; |
4c4b4cd2 PH |
6049 | } |
6050 | } | |
52ce6436 PH |
6051 | else if (index_p != NULL) |
6052 | *index_p += 1; | |
4c4b4cd2 PH |
6053 | } |
6054 | return 0; | |
6055 | } | |
6056 | ||
52ce6436 | 6057 | /* Number of user-visible fields in record type TYPE. */ |
4c4b4cd2 | 6058 | |
52ce6436 PH |
6059 | static int |
6060 | num_visible_fields (struct type *type) | |
6061 | { | |
6062 | int n; | |
6063 | n = 0; | |
6064 | find_struct_field (NULL, type, 0, NULL, NULL, NULL, NULL, &n); | |
6065 | return n; | |
6066 | } | |
14f9c5c9 | 6067 | |
4c4b4cd2 | 6068 | /* Look for a field NAME in ARG. Adjust the address of ARG by OFFSET bytes, |
14f9c5c9 AS |
6069 | and search in it assuming it has (class) type TYPE. |
6070 | If found, return value, else return NULL. | |
6071 | ||
4c4b4cd2 | 6072 | Searches recursively through wrapper fields (e.g., '_parent'). */ |
14f9c5c9 | 6073 | |
4c4b4cd2 | 6074 | static struct value * |
d2e4a39e | 6075 | ada_search_struct_field (char *name, struct value *arg, int offset, |
4c4b4cd2 | 6076 | struct type *type) |
14f9c5c9 AS |
6077 | { |
6078 | int i; | |
61ee279c | 6079 | type = ada_check_typedef (type); |
14f9c5c9 | 6080 | |
52ce6436 | 6081 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) |
14f9c5c9 AS |
6082 | { |
6083 | char *t_field_name = TYPE_FIELD_NAME (type, i); | |
6084 | ||
6085 | if (t_field_name == NULL) | |
4c4b4cd2 | 6086 | continue; |
14f9c5c9 AS |
6087 | |
6088 | else if (field_name_match (t_field_name, name)) | |
4c4b4cd2 | 6089 | return ada_value_primitive_field (arg, offset, i, type); |
14f9c5c9 AS |
6090 | |
6091 | else if (ada_is_wrapper_field (type, i)) | |
4c4b4cd2 | 6092 | { |
06d5cf63 JB |
6093 | struct value *v = /* Do not let indent join lines here. */ |
6094 | ada_search_struct_field (name, arg, | |
6095 | offset + TYPE_FIELD_BITPOS (type, i) / 8, | |
6096 | TYPE_FIELD_TYPE (type, i)); | |
4c4b4cd2 PH |
6097 | if (v != NULL) |
6098 | return v; | |
6099 | } | |
14f9c5c9 AS |
6100 | |
6101 | else if (ada_is_variant_part (type, i)) | |
4c4b4cd2 | 6102 | { |
52ce6436 | 6103 | /* PNH: Do we ever get here? See find_struct_field. */ |
4c4b4cd2 | 6104 | int j; |
61ee279c | 6105 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type, i)); |
4c4b4cd2 PH |
6106 | int var_offset = offset + TYPE_FIELD_BITPOS (type, i) / 8; |
6107 | ||
52ce6436 | 6108 | for (j = 0; j < TYPE_NFIELDS (field_type); j += 1) |
4c4b4cd2 | 6109 | { |
06d5cf63 JB |
6110 | struct value *v = ada_search_struct_field /* Force line break. */ |
6111 | (name, arg, | |
6112 | var_offset + TYPE_FIELD_BITPOS (field_type, j) / 8, | |
6113 | TYPE_FIELD_TYPE (field_type, j)); | |
4c4b4cd2 PH |
6114 | if (v != NULL) |
6115 | return v; | |
6116 | } | |
6117 | } | |
14f9c5c9 AS |
6118 | } |
6119 | return NULL; | |
6120 | } | |
d2e4a39e | 6121 | |
52ce6436 PH |
6122 | static struct value *ada_index_struct_field_1 (int *, struct value *, |
6123 | int, struct type *); | |
6124 | ||
6125 | ||
6126 | /* Return field #INDEX in ARG, where the index is that returned by | |
6127 | * find_struct_field through its INDEX_P argument. Adjust the address | |
6128 | * of ARG by OFFSET bytes, and search in it assuming it has (class) type TYPE. | |
6129 | * If found, return value, else return NULL. */ | |
6130 | ||
6131 | static struct value * | |
6132 | ada_index_struct_field (int index, struct value *arg, int offset, | |
6133 | struct type *type) | |
6134 | { | |
6135 | return ada_index_struct_field_1 (&index, arg, offset, type); | |
6136 | } | |
6137 | ||
6138 | ||
6139 | /* Auxiliary function for ada_index_struct_field. Like | |
6140 | * ada_index_struct_field, but takes index from *INDEX_P and modifies | |
6141 | * *INDEX_P. */ | |
6142 | ||
6143 | static struct value * | |
6144 | ada_index_struct_field_1 (int *index_p, struct value *arg, int offset, | |
6145 | struct type *type) | |
6146 | { | |
6147 | int i; | |
6148 | type = ada_check_typedef (type); | |
6149 | ||
6150 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
6151 | { | |
6152 | if (TYPE_FIELD_NAME (type, i) == NULL) | |
6153 | continue; | |
6154 | else if (ada_is_wrapper_field (type, i)) | |
6155 | { | |
6156 | struct value *v = /* Do not let indent join lines here. */ | |
6157 | ada_index_struct_field_1 (index_p, arg, | |
6158 | offset + TYPE_FIELD_BITPOS (type, i) / 8, | |
6159 | TYPE_FIELD_TYPE (type, i)); | |
6160 | if (v != NULL) | |
6161 | return v; | |
6162 | } | |
6163 | ||
6164 | else if (ada_is_variant_part (type, i)) | |
6165 | { | |
6166 | /* PNH: Do we ever get here? See ada_search_struct_field, | |
6167 | find_struct_field. */ | |
6168 | error (_("Cannot assign this kind of variant record")); | |
6169 | } | |
6170 | else if (*index_p == 0) | |
6171 | return ada_value_primitive_field (arg, offset, i, type); | |
6172 | else | |
6173 | *index_p -= 1; | |
6174 | } | |
6175 | return NULL; | |
6176 | } | |
6177 | ||
4c4b4cd2 PH |
6178 | /* Given ARG, a value of type (pointer or reference to a)* |
6179 | structure/union, extract the component named NAME from the ultimate | |
6180 | target structure/union and return it as a value with its | |
6181 | appropriate type. If ARG is a pointer or reference and the field | |
6182 | is not packed, returns a reference to the field, otherwise the | |
6183 | value of the field (an lvalue if ARG is an lvalue). | |
14f9c5c9 | 6184 | |
4c4b4cd2 PH |
6185 | The routine searches for NAME among all members of the structure itself |
6186 | and (recursively) among all members of any wrapper members | |
14f9c5c9 AS |
6187 | (e.g., '_parent'). |
6188 | ||
03ee6b2e PH |
6189 | If NO_ERR, then simply return NULL in case of error, rather than |
6190 | calling error. */ | |
14f9c5c9 | 6191 | |
d2e4a39e | 6192 | struct value * |
03ee6b2e | 6193 | ada_value_struct_elt (struct value *arg, char *name, int no_err) |
14f9c5c9 | 6194 | { |
4c4b4cd2 | 6195 | struct type *t, *t1; |
d2e4a39e | 6196 | struct value *v; |
14f9c5c9 | 6197 | |
4c4b4cd2 | 6198 | v = NULL; |
df407dfe | 6199 | t1 = t = ada_check_typedef (value_type (arg)); |
4c4b4cd2 PH |
6200 | if (TYPE_CODE (t) == TYPE_CODE_REF) |
6201 | { | |
6202 | t1 = TYPE_TARGET_TYPE (t); | |
6203 | if (t1 == NULL) | |
03ee6b2e | 6204 | goto BadValue; |
61ee279c | 6205 | t1 = ada_check_typedef (t1); |
4c4b4cd2 | 6206 | if (TYPE_CODE (t1) == TYPE_CODE_PTR) |
76a01679 | 6207 | { |
994b9211 | 6208 | arg = coerce_ref (arg); |
76a01679 JB |
6209 | t = t1; |
6210 | } | |
4c4b4cd2 | 6211 | } |
14f9c5c9 | 6212 | |
4c4b4cd2 PH |
6213 | while (TYPE_CODE (t) == TYPE_CODE_PTR) |
6214 | { | |
6215 | t1 = TYPE_TARGET_TYPE (t); | |
6216 | if (t1 == NULL) | |
03ee6b2e | 6217 | goto BadValue; |
61ee279c | 6218 | t1 = ada_check_typedef (t1); |
4c4b4cd2 | 6219 | if (TYPE_CODE (t1) == TYPE_CODE_PTR) |
76a01679 JB |
6220 | { |
6221 | arg = value_ind (arg); | |
6222 | t = t1; | |
6223 | } | |
4c4b4cd2 | 6224 | else |
76a01679 | 6225 | break; |
4c4b4cd2 | 6226 | } |
14f9c5c9 | 6227 | |
4c4b4cd2 | 6228 | if (TYPE_CODE (t1) != TYPE_CODE_STRUCT && TYPE_CODE (t1) != TYPE_CODE_UNION) |
03ee6b2e | 6229 | goto BadValue; |
14f9c5c9 | 6230 | |
4c4b4cd2 PH |
6231 | if (t1 == t) |
6232 | v = ada_search_struct_field (name, arg, 0, t); | |
6233 | else | |
6234 | { | |
6235 | int bit_offset, bit_size, byte_offset; | |
6236 | struct type *field_type; | |
6237 | CORE_ADDR address; | |
6238 | ||
76a01679 JB |
6239 | if (TYPE_CODE (t) == TYPE_CODE_PTR) |
6240 | address = value_as_address (arg); | |
4c4b4cd2 | 6241 | else |
0fd88904 | 6242 | address = unpack_pointer (t, value_contents (arg)); |
14f9c5c9 | 6243 | |
1ed6ede0 | 6244 | t1 = ada_to_fixed_type (ada_get_base_type (t1), NULL, address, NULL, 1); |
76a01679 JB |
6245 | if (find_struct_field (name, t1, 0, |
6246 | &field_type, &byte_offset, &bit_offset, | |
52ce6436 | 6247 | &bit_size, NULL)) |
76a01679 JB |
6248 | { |
6249 | if (bit_size != 0) | |
6250 | { | |
714e53ab PH |
6251 | if (TYPE_CODE (t) == TYPE_CODE_REF) |
6252 | arg = ada_coerce_ref (arg); | |
6253 | else | |
6254 | arg = ada_value_ind (arg); | |
76a01679 JB |
6255 | v = ada_value_primitive_packed_val (arg, NULL, byte_offset, |
6256 | bit_offset, bit_size, | |
6257 | field_type); | |
6258 | } | |
6259 | else | |
6260 | v = value_from_pointer (lookup_reference_type (field_type), | |
6261 | address + byte_offset); | |
6262 | } | |
6263 | } | |
6264 | ||
03ee6b2e PH |
6265 | if (v != NULL || no_err) |
6266 | return v; | |
6267 | else | |
323e0a4a | 6268 | error (_("There is no member named %s."), name); |
14f9c5c9 | 6269 | |
03ee6b2e PH |
6270 | BadValue: |
6271 | if (no_err) | |
6272 | return NULL; | |
6273 | else | |
6274 | error (_("Attempt to extract a component of a value that is not a record.")); | |
14f9c5c9 AS |
6275 | } |
6276 | ||
6277 | /* Given a type TYPE, look up the type of the component of type named NAME. | |
4c4b4cd2 PH |
6278 | If DISPP is non-null, add its byte displacement from the beginning of a |
6279 | structure (pointed to by a value) of type TYPE to *DISPP (does not | |
14f9c5c9 AS |
6280 | work for packed fields). |
6281 | ||
6282 | Matches any field whose name has NAME as a prefix, possibly | |
4c4b4cd2 | 6283 | followed by "___". |
14f9c5c9 | 6284 | |
4c4b4cd2 PH |
6285 | TYPE can be either a struct or union. If REFOK, TYPE may also |
6286 | be a (pointer or reference)+ to a struct or union, and the | |
6287 | ultimate target type will be searched. | |
14f9c5c9 AS |
6288 | |
6289 | Looks recursively into variant clauses and parent types. | |
6290 | ||
4c4b4cd2 PH |
6291 | If NOERR is nonzero, return NULL if NAME is not suitably defined or |
6292 | TYPE is not a type of the right kind. */ | |
14f9c5c9 | 6293 | |
4c4b4cd2 | 6294 | static struct type * |
76a01679 JB |
6295 | ada_lookup_struct_elt_type (struct type *type, char *name, int refok, |
6296 | int noerr, int *dispp) | |
14f9c5c9 AS |
6297 | { |
6298 | int i; | |
6299 | ||
6300 | if (name == NULL) | |
6301 | goto BadName; | |
6302 | ||
76a01679 | 6303 | if (refok && type != NULL) |
4c4b4cd2 PH |
6304 | while (1) |
6305 | { | |
61ee279c | 6306 | type = ada_check_typedef (type); |
76a01679 JB |
6307 | if (TYPE_CODE (type) != TYPE_CODE_PTR |
6308 | && TYPE_CODE (type) != TYPE_CODE_REF) | |
6309 | break; | |
6310 | type = TYPE_TARGET_TYPE (type); | |
4c4b4cd2 | 6311 | } |
14f9c5c9 | 6312 | |
76a01679 | 6313 | if (type == NULL |
1265e4aa JB |
6314 | || (TYPE_CODE (type) != TYPE_CODE_STRUCT |
6315 | && TYPE_CODE (type) != TYPE_CODE_UNION)) | |
14f9c5c9 | 6316 | { |
4c4b4cd2 | 6317 | if (noerr) |
76a01679 | 6318 | return NULL; |
4c4b4cd2 | 6319 | else |
76a01679 JB |
6320 | { |
6321 | target_terminal_ours (); | |
6322 | gdb_flush (gdb_stdout); | |
323e0a4a AC |
6323 | if (type == NULL) |
6324 | error (_("Type (null) is not a structure or union type")); | |
6325 | else | |
6326 | { | |
6327 | /* XXX: type_sprint */ | |
6328 | fprintf_unfiltered (gdb_stderr, _("Type ")); | |
6329 | type_print (type, "", gdb_stderr, -1); | |
6330 | error (_(" is not a structure or union type")); | |
6331 | } | |
76a01679 | 6332 | } |
14f9c5c9 AS |
6333 | } |
6334 | ||
6335 | type = to_static_fixed_type (type); | |
6336 | ||
6337 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
6338 | { | |
6339 | char *t_field_name = TYPE_FIELD_NAME (type, i); | |
6340 | struct type *t; | |
6341 | int disp; | |
d2e4a39e | 6342 | |
14f9c5c9 | 6343 | if (t_field_name == NULL) |
4c4b4cd2 | 6344 | continue; |
14f9c5c9 AS |
6345 | |
6346 | else if (field_name_match (t_field_name, name)) | |
4c4b4cd2 PH |
6347 | { |
6348 | if (dispp != NULL) | |
6349 | *dispp += TYPE_FIELD_BITPOS (type, i) / 8; | |
61ee279c | 6350 | return ada_check_typedef (TYPE_FIELD_TYPE (type, i)); |
4c4b4cd2 | 6351 | } |
14f9c5c9 AS |
6352 | |
6353 | else if (ada_is_wrapper_field (type, i)) | |
4c4b4cd2 PH |
6354 | { |
6355 | disp = 0; | |
6356 | t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, | |
6357 | 0, 1, &disp); | |
6358 | if (t != NULL) | |
6359 | { | |
6360 | if (dispp != NULL) | |
6361 | *dispp += disp + TYPE_FIELD_BITPOS (type, i) / 8; | |
6362 | return t; | |
6363 | } | |
6364 | } | |
14f9c5c9 AS |
6365 | |
6366 | else if (ada_is_variant_part (type, i)) | |
4c4b4cd2 PH |
6367 | { |
6368 | int j; | |
61ee279c | 6369 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type, i)); |
4c4b4cd2 PH |
6370 | |
6371 | for (j = TYPE_NFIELDS (field_type) - 1; j >= 0; j -= 1) | |
6372 | { | |
b1f33ddd JB |
6373 | /* FIXME pnh 2008/01/26: We check for a field that is |
6374 | NOT wrapped in a struct, since the compiler sometimes | |
6375 | generates these for unchecked variant types. Revisit | |
6376 | if the compiler changes this practice. */ | |
6377 | char *v_field_name = TYPE_FIELD_NAME (field_type, j); | |
4c4b4cd2 | 6378 | disp = 0; |
b1f33ddd JB |
6379 | if (v_field_name != NULL |
6380 | && field_name_match (v_field_name, name)) | |
6381 | t = ada_check_typedef (TYPE_FIELD_TYPE (field_type, j)); | |
6382 | else | |
6383 | t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (field_type, j), | |
6384 | name, 0, 1, &disp); | |
6385 | ||
4c4b4cd2 PH |
6386 | if (t != NULL) |
6387 | { | |
6388 | if (dispp != NULL) | |
6389 | *dispp += disp + TYPE_FIELD_BITPOS (type, i) / 8; | |
6390 | return t; | |
6391 | } | |
6392 | } | |
6393 | } | |
14f9c5c9 AS |
6394 | |
6395 | } | |
6396 | ||
6397 | BadName: | |
d2e4a39e | 6398 | if (!noerr) |
14f9c5c9 AS |
6399 | { |
6400 | target_terminal_ours (); | |
6401 | gdb_flush (gdb_stdout); | |
323e0a4a AC |
6402 | if (name == NULL) |
6403 | { | |
6404 | /* XXX: type_sprint */ | |
6405 | fprintf_unfiltered (gdb_stderr, _("Type ")); | |
6406 | type_print (type, "", gdb_stderr, -1); | |
6407 | error (_(" has no component named <null>")); | |
6408 | } | |
6409 | else | |
6410 | { | |
6411 | /* XXX: type_sprint */ | |
6412 | fprintf_unfiltered (gdb_stderr, _("Type ")); | |
6413 | type_print (type, "", gdb_stderr, -1); | |
6414 | error (_(" has no component named %s"), name); | |
6415 | } | |
14f9c5c9 AS |
6416 | } |
6417 | ||
6418 | return NULL; | |
6419 | } | |
6420 | ||
b1f33ddd JB |
6421 | /* Assuming that VAR_TYPE is the type of a variant part of a record (a union), |
6422 | within a value of type OUTER_TYPE, return true iff VAR_TYPE | |
6423 | represents an unchecked union (that is, the variant part of a | |
6424 | record that is named in an Unchecked_Union pragma). */ | |
6425 | ||
6426 | static int | |
6427 | is_unchecked_variant (struct type *var_type, struct type *outer_type) | |
6428 | { | |
6429 | char *discrim_name = ada_variant_discrim_name (var_type); | |
6430 | return (ada_lookup_struct_elt_type (outer_type, discrim_name, 0, 1, NULL) | |
6431 | == NULL); | |
6432 | } | |
6433 | ||
6434 | ||
14f9c5c9 AS |
6435 | /* Assuming that VAR_TYPE is the type of a variant part of a record (a union), |
6436 | within a value of type OUTER_TYPE that is stored in GDB at | |
4c4b4cd2 PH |
6437 | OUTER_VALADDR, determine which variant clause (field number in VAR_TYPE, |
6438 | numbering from 0) is applicable. Returns -1 if none are. */ | |
14f9c5c9 | 6439 | |
d2e4a39e | 6440 | int |
ebf56fd3 | 6441 | ada_which_variant_applies (struct type *var_type, struct type *outer_type, |
fc1a4b47 | 6442 | const gdb_byte *outer_valaddr) |
14f9c5c9 AS |
6443 | { |
6444 | int others_clause; | |
6445 | int i; | |
d2e4a39e | 6446 | char *discrim_name = ada_variant_discrim_name (var_type); |
0c281816 JB |
6447 | struct value *outer; |
6448 | struct value *discrim; | |
14f9c5c9 AS |
6449 | LONGEST discrim_val; |
6450 | ||
0c281816 JB |
6451 | outer = value_from_contents_and_address (outer_type, outer_valaddr, 0); |
6452 | discrim = ada_value_struct_elt (outer, discrim_name, 1); | |
6453 | if (discrim == NULL) | |
14f9c5c9 | 6454 | return -1; |
0c281816 | 6455 | discrim_val = value_as_long (discrim); |
14f9c5c9 AS |
6456 | |
6457 | others_clause = -1; | |
6458 | for (i = 0; i < TYPE_NFIELDS (var_type); i += 1) | |
6459 | { | |
6460 | if (ada_is_others_clause (var_type, i)) | |
4c4b4cd2 | 6461 | others_clause = i; |
14f9c5c9 | 6462 | else if (ada_in_variant (discrim_val, var_type, i)) |
4c4b4cd2 | 6463 | return i; |
14f9c5c9 AS |
6464 | } |
6465 | ||
6466 | return others_clause; | |
6467 | } | |
d2e4a39e | 6468 | \f |
14f9c5c9 AS |
6469 | |
6470 | ||
4c4b4cd2 | 6471 | /* Dynamic-Sized Records */ |
14f9c5c9 AS |
6472 | |
6473 | /* Strategy: The type ostensibly attached to a value with dynamic size | |
6474 | (i.e., a size that is not statically recorded in the debugging | |
6475 | data) does not accurately reflect the size or layout of the value. | |
6476 | Our strategy is to convert these values to values with accurate, | |
4c4b4cd2 | 6477 | conventional types that are constructed on the fly. */ |
14f9c5c9 AS |
6478 | |
6479 | /* There is a subtle and tricky problem here. In general, we cannot | |
6480 | determine the size of dynamic records without its data. However, | |
6481 | the 'struct value' data structure, which GDB uses to represent | |
6482 | quantities in the inferior process (the target), requires the size | |
6483 | of the type at the time of its allocation in order to reserve space | |
6484 | for GDB's internal copy of the data. That's why the | |
6485 | 'to_fixed_xxx_type' routines take (target) addresses as parameters, | |
4c4b4cd2 | 6486 | rather than struct value*s. |
14f9c5c9 AS |
6487 | |
6488 | However, GDB's internal history variables ($1, $2, etc.) are | |
6489 | struct value*s containing internal copies of the data that are not, in | |
6490 | general, the same as the data at their corresponding addresses in | |
6491 | the target. Fortunately, the types we give to these values are all | |
6492 | conventional, fixed-size types (as per the strategy described | |
6493 | above), so that we don't usually have to perform the | |
6494 | 'to_fixed_xxx_type' conversions to look at their values. | |
6495 | Unfortunately, there is one exception: if one of the internal | |
6496 | history variables is an array whose elements are unconstrained | |
6497 | records, then we will need to create distinct fixed types for each | |
6498 | element selected. */ | |
6499 | ||
6500 | /* The upshot of all of this is that many routines take a (type, host | |
6501 | address, target address) triple as arguments to represent a value. | |
6502 | The host address, if non-null, is supposed to contain an internal | |
6503 | copy of the relevant data; otherwise, the program is to consult the | |
4c4b4cd2 | 6504 | target at the target address. */ |
14f9c5c9 AS |
6505 | |
6506 | /* Assuming that VAL0 represents a pointer value, the result of | |
6507 | dereferencing it. Differs from value_ind in its treatment of | |
4c4b4cd2 | 6508 | dynamic-sized types. */ |
14f9c5c9 | 6509 | |
d2e4a39e AS |
6510 | struct value * |
6511 | ada_value_ind (struct value *val0) | |
14f9c5c9 | 6512 | { |
d2e4a39e | 6513 | struct value *val = unwrap_value (value_ind (val0)); |
4c4b4cd2 | 6514 | return ada_to_fixed_value (val); |
14f9c5c9 AS |
6515 | } |
6516 | ||
6517 | /* The value resulting from dereferencing any "reference to" | |
4c4b4cd2 PH |
6518 | qualifiers on VAL0. */ |
6519 | ||
d2e4a39e AS |
6520 | static struct value * |
6521 | ada_coerce_ref (struct value *val0) | |
6522 | { | |
df407dfe | 6523 | if (TYPE_CODE (value_type (val0)) == TYPE_CODE_REF) |
d2e4a39e AS |
6524 | { |
6525 | struct value *val = val0; | |
994b9211 | 6526 | val = coerce_ref (val); |
d2e4a39e | 6527 | val = unwrap_value (val); |
4c4b4cd2 | 6528 | return ada_to_fixed_value (val); |
d2e4a39e AS |
6529 | } |
6530 | else | |
14f9c5c9 AS |
6531 | return val0; |
6532 | } | |
6533 | ||
6534 | /* Return OFF rounded upward if necessary to a multiple of | |
4c4b4cd2 | 6535 | ALIGNMENT (a power of 2). */ |
14f9c5c9 AS |
6536 | |
6537 | static unsigned int | |
ebf56fd3 | 6538 | align_value (unsigned int off, unsigned int alignment) |
14f9c5c9 AS |
6539 | { |
6540 | return (off + alignment - 1) & ~(alignment - 1); | |
6541 | } | |
6542 | ||
4c4b4cd2 | 6543 | /* Return the bit alignment required for field #F of template type TYPE. */ |
14f9c5c9 AS |
6544 | |
6545 | static unsigned int | |
ebf56fd3 | 6546 | field_alignment (struct type *type, int f) |
14f9c5c9 | 6547 | { |
d2e4a39e | 6548 | const char *name = TYPE_FIELD_NAME (type, f); |
64a1bf19 | 6549 | int len; |
14f9c5c9 AS |
6550 | int align_offset; |
6551 | ||
64a1bf19 JB |
6552 | /* The field name should never be null, unless the debugging information |
6553 | is somehow malformed. In this case, we assume the field does not | |
6554 | require any alignment. */ | |
6555 | if (name == NULL) | |
6556 | return 1; | |
6557 | ||
6558 | len = strlen (name); | |
6559 | ||
4c4b4cd2 PH |
6560 | if (!isdigit (name[len - 1])) |
6561 | return 1; | |
14f9c5c9 | 6562 | |
d2e4a39e | 6563 | if (isdigit (name[len - 2])) |
14f9c5c9 AS |
6564 | align_offset = len - 2; |
6565 | else | |
6566 | align_offset = len - 1; | |
6567 | ||
4c4b4cd2 | 6568 | if (align_offset < 7 || strncmp ("___XV", name + align_offset - 6, 5) != 0) |
14f9c5c9 AS |
6569 | return TARGET_CHAR_BIT; |
6570 | ||
4c4b4cd2 PH |
6571 | return atoi (name + align_offset) * TARGET_CHAR_BIT; |
6572 | } | |
6573 | ||
6574 | /* Find a symbol named NAME. Ignores ambiguity. */ | |
6575 | ||
6576 | struct symbol * | |
6577 | ada_find_any_symbol (const char *name) | |
6578 | { | |
6579 | struct symbol *sym; | |
6580 | ||
6581 | sym = standard_lookup (name, get_selected_block (NULL), VAR_DOMAIN); | |
6582 | if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
6583 | return sym; | |
6584 | ||
6585 | sym = standard_lookup (name, NULL, STRUCT_DOMAIN); | |
6586 | return sym; | |
14f9c5c9 AS |
6587 | } |
6588 | ||
6589 | /* Find a type named NAME. Ignores ambiguity. */ | |
4c4b4cd2 | 6590 | |
d2e4a39e | 6591 | struct type * |
ebf56fd3 | 6592 | ada_find_any_type (const char *name) |
14f9c5c9 | 6593 | { |
4c4b4cd2 | 6594 | struct symbol *sym = ada_find_any_symbol (name); |
14f9c5c9 | 6595 | |
14f9c5c9 AS |
6596 | if (sym != NULL) |
6597 | return SYMBOL_TYPE (sym); | |
6598 | ||
6599 | return NULL; | |
6600 | } | |
6601 | ||
aeb5907d JB |
6602 | /* Given NAME and an associated BLOCK, search all symbols for |
6603 | NAME suffixed with "___XR", which is the ``renaming'' symbol | |
4c4b4cd2 PH |
6604 | associated to NAME. Return this symbol if found, return |
6605 | NULL otherwise. */ | |
6606 | ||
6607 | struct symbol * | |
6608 | ada_find_renaming_symbol (const char *name, struct block *block) | |
aeb5907d JB |
6609 | { |
6610 | struct symbol *sym; | |
6611 | ||
6612 | sym = find_old_style_renaming_symbol (name, block); | |
6613 | ||
6614 | if (sym != NULL) | |
6615 | return sym; | |
6616 | ||
6617 | /* Not right yet. FIXME pnh 7/20/2007. */ | |
6618 | sym = ada_find_any_symbol (name); | |
6619 | if (sym != NULL && strstr (SYMBOL_LINKAGE_NAME (sym), "___XR") != NULL) | |
6620 | return sym; | |
6621 | else | |
6622 | return NULL; | |
6623 | } | |
6624 | ||
6625 | static struct symbol * | |
6626 | find_old_style_renaming_symbol (const char *name, struct block *block) | |
4c4b4cd2 | 6627 | { |
7f0df278 | 6628 | const struct symbol *function_sym = block_linkage_function (block); |
4c4b4cd2 PH |
6629 | char *rename; |
6630 | ||
6631 | if (function_sym != NULL) | |
6632 | { | |
6633 | /* If the symbol is defined inside a function, NAME is not fully | |
6634 | qualified. This means we need to prepend the function name | |
6635 | as well as adding the ``___XR'' suffix to build the name of | |
6636 | the associated renaming symbol. */ | |
6637 | char *function_name = SYMBOL_LINKAGE_NAME (function_sym); | |
529cad9c PH |
6638 | /* Function names sometimes contain suffixes used |
6639 | for instance to qualify nested subprograms. When building | |
6640 | the XR type name, we need to make sure that this suffix is | |
6641 | not included. So do not include any suffix in the function | |
6642 | name length below. */ | |
6643 | const int function_name_len = ada_name_prefix_len (function_name); | |
76a01679 JB |
6644 | const int rename_len = function_name_len + 2 /* "__" */ |
6645 | + strlen (name) + 6 /* "___XR\0" */ ; | |
4c4b4cd2 | 6646 | |
529cad9c PH |
6647 | /* Strip the suffix if necessary. */ |
6648 | function_name[function_name_len] = '\0'; | |
6649 | ||
4c4b4cd2 PH |
6650 | /* Library-level functions are a special case, as GNAT adds |
6651 | a ``_ada_'' prefix to the function name to avoid namespace | |
aeb5907d | 6652 | pollution. However, the renaming symbols themselves do not |
4c4b4cd2 PH |
6653 | have this prefix, so we need to skip this prefix if present. */ |
6654 | if (function_name_len > 5 /* "_ada_" */ | |
6655 | && strstr (function_name, "_ada_") == function_name) | |
6656 | function_name = function_name + 5; | |
6657 | ||
6658 | rename = (char *) alloca (rename_len * sizeof (char)); | |
6659 | sprintf (rename, "%s__%s___XR", function_name, name); | |
6660 | } | |
6661 | else | |
6662 | { | |
6663 | const int rename_len = strlen (name) + 6; | |
6664 | rename = (char *) alloca (rename_len * sizeof (char)); | |
6665 | sprintf (rename, "%s___XR", name); | |
6666 | } | |
6667 | ||
6668 | return ada_find_any_symbol (rename); | |
6669 | } | |
6670 | ||
14f9c5c9 | 6671 | /* Because of GNAT encoding conventions, several GDB symbols may match a |
4c4b4cd2 | 6672 | given type name. If the type denoted by TYPE0 is to be preferred to |
14f9c5c9 | 6673 | that of TYPE1 for purposes of type printing, return non-zero; |
4c4b4cd2 PH |
6674 | otherwise return 0. */ |
6675 | ||
14f9c5c9 | 6676 | int |
d2e4a39e | 6677 | ada_prefer_type (struct type *type0, struct type *type1) |
14f9c5c9 AS |
6678 | { |
6679 | if (type1 == NULL) | |
6680 | return 1; | |
6681 | else if (type0 == NULL) | |
6682 | return 0; | |
6683 | else if (TYPE_CODE (type1) == TYPE_CODE_VOID) | |
6684 | return 1; | |
6685 | else if (TYPE_CODE (type0) == TYPE_CODE_VOID) | |
6686 | return 0; | |
4c4b4cd2 PH |
6687 | else if (TYPE_NAME (type1) == NULL && TYPE_NAME (type0) != NULL) |
6688 | return 1; | |
14f9c5c9 AS |
6689 | else if (ada_is_packed_array_type (type0)) |
6690 | return 1; | |
4c4b4cd2 PH |
6691 | else if (ada_is_array_descriptor_type (type0) |
6692 | && !ada_is_array_descriptor_type (type1)) | |
14f9c5c9 | 6693 | return 1; |
aeb5907d JB |
6694 | else |
6695 | { | |
6696 | const char *type0_name = type_name_no_tag (type0); | |
6697 | const char *type1_name = type_name_no_tag (type1); | |
6698 | ||
6699 | if (type0_name != NULL && strstr (type0_name, "___XR") != NULL | |
6700 | && (type1_name == NULL || strstr (type1_name, "___XR") == NULL)) | |
6701 | return 1; | |
6702 | } | |
14f9c5c9 AS |
6703 | return 0; |
6704 | } | |
6705 | ||
6706 | /* The name of TYPE, which is either its TYPE_NAME, or, if that is | |
4c4b4cd2 PH |
6707 | null, its TYPE_TAG_NAME. Null if TYPE is null. */ |
6708 | ||
d2e4a39e AS |
6709 | char * |
6710 | ada_type_name (struct type *type) | |
14f9c5c9 | 6711 | { |
d2e4a39e | 6712 | if (type == NULL) |
14f9c5c9 AS |
6713 | return NULL; |
6714 | else if (TYPE_NAME (type) != NULL) | |
6715 | return TYPE_NAME (type); | |
6716 | else | |
6717 | return TYPE_TAG_NAME (type); | |
6718 | } | |
6719 | ||
6720 | /* Find a parallel type to TYPE whose name is formed by appending | |
4c4b4cd2 | 6721 | SUFFIX to the name of TYPE. */ |
14f9c5c9 | 6722 | |
d2e4a39e | 6723 | struct type * |
ebf56fd3 | 6724 | ada_find_parallel_type (struct type *type, const char *suffix) |
14f9c5c9 | 6725 | { |
d2e4a39e | 6726 | static char *name; |
14f9c5c9 | 6727 | static size_t name_len = 0; |
14f9c5c9 | 6728 | int len; |
d2e4a39e AS |
6729 | char *typename = ada_type_name (type); |
6730 | ||
14f9c5c9 AS |
6731 | if (typename == NULL) |
6732 | return NULL; | |
6733 | ||
6734 | len = strlen (typename); | |
6735 | ||
d2e4a39e | 6736 | GROW_VECT (name, name_len, len + strlen (suffix) + 1); |
14f9c5c9 AS |
6737 | |
6738 | strcpy (name, typename); | |
6739 | strcpy (name + len, suffix); | |
6740 | ||
6741 | return ada_find_any_type (name); | |
6742 | } | |
6743 | ||
6744 | ||
6745 | /* If TYPE is a variable-size record type, return the corresponding template | |
4c4b4cd2 | 6746 | type describing its fields. Otherwise, return NULL. */ |
14f9c5c9 | 6747 | |
d2e4a39e AS |
6748 | static struct type * |
6749 | dynamic_template_type (struct type *type) | |
14f9c5c9 | 6750 | { |
61ee279c | 6751 | type = ada_check_typedef (type); |
14f9c5c9 AS |
6752 | |
6753 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT | |
d2e4a39e | 6754 | || ada_type_name (type) == NULL) |
14f9c5c9 | 6755 | return NULL; |
d2e4a39e | 6756 | else |
14f9c5c9 AS |
6757 | { |
6758 | int len = strlen (ada_type_name (type)); | |
4c4b4cd2 PH |
6759 | if (len > 6 && strcmp (ada_type_name (type) + len - 6, "___XVE") == 0) |
6760 | return type; | |
14f9c5c9 | 6761 | else |
4c4b4cd2 | 6762 | return ada_find_parallel_type (type, "___XVE"); |
14f9c5c9 AS |
6763 | } |
6764 | } | |
6765 | ||
6766 | /* Assuming that TEMPL_TYPE is a union or struct type, returns | |
4c4b4cd2 | 6767 | non-zero iff field FIELD_NUM of TEMPL_TYPE has dynamic size. */ |
14f9c5c9 | 6768 | |
d2e4a39e AS |
6769 | static int |
6770 | is_dynamic_field (struct type *templ_type, int field_num) | |
14f9c5c9 AS |
6771 | { |
6772 | const char *name = TYPE_FIELD_NAME (templ_type, field_num); | |
d2e4a39e | 6773 | return name != NULL |
14f9c5c9 AS |
6774 | && TYPE_CODE (TYPE_FIELD_TYPE (templ_type, field_num)) == TYPE_CODE_PTR |
6775 | && strstr (name, "___XVL") != NULL; | |
6776 | } | |
6777 | ||
4c4b4cd2 PH |
6778 | /* The index of the variant field of TYPE, or -1 if TYPE does not |
6779 | represent a variant record type. */ | |
14f9c5c9 | 6780 | |
d2e4a39e | 6781 | static int |
4c4b4cd2 | 6782 | variant_field_index (struct type *type) |
14f9c5c9 AS |
6783 | { |
6784 | int f; | |
6785 | ||
4c4b4cd2 PH |
6786 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT) |
6787 | return -1; | |
6788 | ||
6789 | for (f = 0; f < TYPE_NFIELDS (type); f += 1) | |
6790 | { | |
6791 | if (ada_is_variant_part (type, f)) | |
6792 | return f; | |
6793 | } | |
6794 | return -1; | |
14f9c5c9 AS |
6795 | } |
6796 | ||
4c4b4cd2 PH |
6797 | /* A record type with no fields. */ |
6798 | ||
d2e4a39e AS |
6799 | static struct type * |
6800 | empty_record (struct objfile *objfile) | |
14f9c5c9 | 6801 | { |
d2e4a39e | 6802 | struct type *type = alloc_type (objfile); |
14f9c5c9 AS |
6803 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
6804 | TYPE_NFIELDS (type) = 0; | |
6805 | TYPE_FIELDS (type) = NULL; | |
b1f33ddd | 6806 | INIT_CPLUS_SPECIFIC (type); |
14f9c5c9 AS |
6807 | TYPE_NAME (type) = "<empty>"; |
6808 | TYPE_TAG_NAME (type) = NULL; | |
14f9c5c9 AS |
6809 | TYPE_LENGTH (type) = 0; |
6810 | return type; | |
6811 | } | |
6812 | ||
6813 | /* An ordinary record type (with fixed-length fields) that describes | |
4c4b4cd2 PH |
6814 | the value of type TYPE at VALADDR or ADDRESS (see comments at |
6815 | the beginning of this section) VAL according to GNAT conventions. | |
6816 | DVAL0 should describe the (portion of a) record that contains any | |
df407dfe | 6817 | necessary discriminants. It should be NULL if value_type (VAL) is |
14f9c5c9 AS |
6818 | an outer-level type (i.e., as opposed to a branch of a variant.) A |
6819 | variant field (unless unchecked) is replaced by a particular branch | |
4c4b4cd2 | 6820 | of the variant. |
14f9c5c9 | 6821 | |
4c4b4cd2 PH |
6822 | If not KEEP_DYNAMIC_FIELDS, then all fields whose position or |
6823 | length are not statically known are discarded. As a consequence, | |
6824 | VALADDR, ADDRESS and DVAL0 are ignored. | |
6825 | ||
6826 | NOTE: Limitations: For now, we assume that dynamic fields and | |
6827 | variants occupy whole numbers of bytes. However, they need not be | |
6828 | byte-aligned. */ | |
6829 | ||
6830 | struct type * | |
10a2c479 | 6831 | ada_template_to_fixed_record_type_1 (struct type *type, |
fc1a4b47 | 6832 | const gdb_byte *valaddr, |
4c4b4cd2 PH |
6833 | CORE_ADDR address, struct value *dval0, |
6834 | int keep_dynamic_fields) | |
14f9c5c9 | 6835 | { |
d2e4a39e AS |
6836 | struct value *mark = value_mark (); |
6837 | struct value *dval; | |
6838 | struct type *rtype; | |
14f9c5c9 | 6839 | int nfields, bit_len; |
4c4b4cd2 | 6840 | int variant_field; |
14f9c5c9 | 6841 | long off; |
4c4b4cd2 | 6842 | int fld_bit_len, bit_incr; |
14f9c5c9 AS |
6843 | int f; |
6844 | ||
4c4b4cd2 PH |
6845 | /* Compute the number of fields in this record type that are going |
6846 | to be processed: unless keep_dynamic_fields, this includes only | |
6847 | fields whose position and length are static will be processed. */ | |
6848 | if (keep_dynamic_fields) | |
6849 | nfields = TYPE_NFIELDS (type); | |
6850 | else | |
6851 | { | |
6852 | nfields = 0; | |
76a01679 | 6853 | while (nfields < TYPE_NFIELDS (type) |
4c4b4cd2 PH |
6854 | && !ada_is_variant_part (type, nfields) |
6855 | && !is_dynamic_field (type, nfields)) | |
6856 | nfields++; | |
6857 | } | |
6858 | ||
14f9c5c9 AS |
6859 | rtype = alloc_type (TYPE_OBJFILE (type)); |
6860 | TYPE_CODE (rtype) = TYPE_CODE_STRUCT; | |
6861 | INIT_CPLUS_SPECIFIC (rtype); | |
6862 | TYPE_NFIELDS (rtype) = nfields; | |
d2e4a39e | 6863 | TYPE_FIELDS (rtype) = (struct field *) |
14f9c5c9 AS |
6864 | TYPE_ALLOC (rtype, nfields * sizeof (struct field)); |
6865 | memset (TYPE_FIELDS (rtype), 0, sizeof (struct field) * nfields); | |
6866 | TYPE_NAME (rtype) = ada_type_name (type); | |
6867 | TYPE_TAG_NAME (rtype) = NULL; | |
876cecd0 | 6868 | TYPE_FIXED_INSTANCE (rtype) = 1; |
14f9c5c9 | 6869 | |
d2e4a39e AS |
6870 | off = 0; |
6871 | bit_len = 0; | |
4c4b4cd2 PH |
6872 | variant_field = -1; |
6873 | ||
14f9c5c9 AS |
6874 | for (f = 0; f < nfields; f += 1) |
6875 | { | |
6c038f32 PH |
6876 | off = align_value (off, field_alignment (type, f)) |
6877 | + TYPE_FIELD_BITPOS (type, f); | |
14f9c5c9 | 6878 | TYPE_FIELD_BITPOS (rtype, f) = off; |
d2e4a39e | 6879 | TYPE_FIELD_BITSIZE (rtype, f) = 0; |
14f9c5c9 | 6880 | |
d2e4a39e | 6881 | if (ada_is_variant_part (type, f)) |
4c4b4cd2 PH |
6882 | { |
6883 | variant_field = f; | |
6884 | fld_bit_len = bit_incr = 0; | |
6885 | } | |
14f9c5c9 | 6886 | else if (is_dynamic_field (type, f)) |
4c4b4cd2 PH |
6887 | { |
6888 | if (dval0 == NULL) | |
6889 | dval = value_from_contents_and_address (rtype, valaddr, address); | |
6890 | else | |
6891 | dval = dval0; | |
6892 | ||
1ed6ede0 JB |
6893 | /* Get the fixed type of the field. Note that, in this case, we |
6894 | do not want to get the real type out of the tag: if the current | |
6895 | field is the parent part of a tagged record, we will get the | |
6896 | tag of the object. Clearly wrong: the real type of the parent | |
6897 | is not the real type of the child. We would end up in an infinite | |
6898 | loop. */ | |
4c4b4cd2 PH |
6899 | TYPE_FIELD_TYPE (rtype, f) = |
6900 | ada_to_fixed_type | |
6901 | (ada_get_base_type | |
6902 | (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, f))), | |
6903 | cond_offset_host (valaddr, off / TARGET_CHAR_BIT), | |
1ed6ede0 | 6904 | cond_offset_target (address, off / TARGET_CHAR_BIT), dval, 0); |
4c4b4cd2 PH |
6905 | TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f); |
6906 | bit_incr = fld_bit_len = | |
6907 | TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, f)) * TARGET_CHAR_BIT; | |
6908 | } | |
14f9c5c9 | 6909 | else |
4c4b4cd2 PH |
6910 | { |
6911 | TYPE_FIELD_TYPE (rtype, f) = TYPE_FIELD_TYPE (type, f); | |
6912 | TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f); | |
6913 | if (TYPE_FIELD_BITSIZE (type, f) > 0) | |
6914 | bit_incr = fld_bit_len = | |
6915 | TYPE_FIELD_BITSIZE (rtype, f) = TYPE_FIELD_BITSIZE (type, f); | |
6916 | else | |
6917 | bit_incr = fld_bit_len = | |
6918 | TYPE_LENGTH (TYPE_FIELD_TYPE (type, f)) * TARGET_CHAR_BIT; | |
6919 | } | |
14f9c5c9 | 6920 | if (off + fld_bit_len > bit_len) |
4c4b4cd2 | 6921 | bit_len = off + fld_bit_len; |
14f9c5c9 | 6922 | off += bit_incr; |
4c4b4cd2 PH |
6923 | TYPE_LENGTH (rtype) = |
6924 | align_value (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT; | |
14f9c5c9 | 6925 | } |
4c4b4cd2 PH |
6926 | |
6927 | /* We handle the variant part, if any, at the end because of certain | |
b1f33ddd | 6928 | odd cases in which it is re-ordered so as NOT to be the last field of |
4c4b4cd2 PH |
6929 | the record. This can happen in the presence of representation |
6930 | clauses. */ | |
6931 | if (variant_field >= 0) | |
6932 | { | |
6933 | struct type *branch_type; | |
6934 | ||
6935 | off = TYPE_FIELD_BITPOS (rtype, variant_field); | |
6936 | ||
6937 | if (dval0 == NULL) | |
6938 | dval = value_from_contents_and_address (rtype, valaddr, address); | |
6939 | else | |
6940 | dval = dval0; | |
6941 | ||
6942 | branch_type = | |
6943 | to_fixed_variant_branch_type | |
6944 | (TYPE_FIELD_TYPE (type, variant_field), | |
6945 | cond_offset_host (valaddr, off / TARGET_CHAR_BIT), | |
6946 | cond_offset_target (address, off / TARGET_CHAR_BIT), dval); | |
6947 | if (branch_type == NULL) | |
6948 | { | |
6949 | for (f = variant_field + 1; f < TYPE_NFIELDS (rtype); f += 1) | |
6950 | TYPE_FIELDS (rtype)[f - 1] = TYPE_FIELDS (rtype)[f]; | |
6951 | TYPE_NFIELDS (rtype) -= 1; | |
6952 | } | |
6953 | else | |
6954 | { | |
6955 | TYPE_FIELD_TYPE (rtype, variant_field) = branch_type; | |
6956 | TYPE_FIELD_NAME (rtype, variant_field) = "S"; | |
6957 | fld_bit_len = | |
6958 | TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, variant_field)) * | |
6959 | TARGET_CHAR_BIT; | |
6960 | if (off + fld_bit_len > bit_len) | |
6961 | bit_len = off + fld_bit_len; | |
6962 | TYPE_LENGTH (rtype) = | |
6963 | align_value (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT; | |
6964 | } | |
6965 | } | |
6966 | ||
714e53ab PH |
6967 | /* According to exp_dbug.ads, the size of TYPE for variable-size records |
6968 | should contain the alignment of that record, which should be a strictly | |
6969 | positive value. If null or negative, then something is wrong, most | |
6970 | probably in the debug info. In that case, we don't round up the size | |
6971 | of the resulting type. If this record is not part of another structure, | |
6972 | the current RTYPE length might be good enough for our purposes. */ | |
6973 | if (TYPE_LENGTH (type) <= 0) | |
6974 | { | |
323e0a4a AC |
6975 | if (TYPE_NAME (rtype)) |
6976 | warning (_("Invalid type size for `%s' detected: %d."), | |
6977 | TYPE_NAME (rtype), TYPE_LENGTH (type)); | |
6978 | else | |
6979 | warning (_("Invalid type size for <unnamed> detected: %d."), | |
6980 | TYPE_LENGTH (type)); | |
714e53ab PH |
6981 | } |
6982 | else | |
6983 | { | |
6984 | TYPE_LENGTH (rtype) = align_value (TYPE_LENGTH (rtype), | |
6985 | TYPE_LENGTH (type)); | |
6986 | } | |
14f9c5c9 AS |
6987 | |
6988 | value_free_to_mark (mark); | |
d2e4a39e | 6989 | if (TYPE_LENGTH (rtype) > varsize_limit) |
323e0a4a | 6990 | error (_("record type with dynamic size is larger than varsize-limit")); |
14f9c5c9 AS |
6991 | return rtype; |
6992 | } | |
6993 | ||
4c4b4cd2 PH |
6994 | /* As for ada_template_to_fixed_record_type_1 with KEEP_DYNAMIC_FIELDS |
6995 | of 1. */ | |
14f9c5c9 | 6996 | |
d2e4a39e | 6997 | static struct type * |
fc1a4b47 | 6998 | template_to_fixed_record_type (struct type *type, const gdb_byte *valaddr, |
4c4b4cd2 PH |
6999 | CORE_ADDR address, struct value *dval0) |
7000 | { | |
7001 | return ada_template_to_fixed_record_type_1 (type, valaddr, | |
7002 | address, dval0, 1); | |
7003 | } | |
7004 | ||
7005 | /* An ordinary record type in which ___XVL-convention fields and | |
7006 | ___XVU- and ___XVN-convention field types in TYPE0 are replaced with | |
7007 | static approximations, containing all possible fields. Uses | |
7008 | no runtime values. Useless for use in values, but that's OK, | |
7009 | since the results are used only for type determinations. Works on both | |
7010 | structs and unions. Representation note: to save space, we memorize | |
7011 | the result of this function in the TYPE_TARGET_TYPE of the | |
7012 | template type. */ | |
7013 | ||
7014 | static struct type * | |
7015 | template_to_static_fixed_type (struct type *type0) | |
14f9c5c9 AS |
7016 | { |
7017 | struct type *type; | |
7018 | int nfields; | |
7019 | int f; | |
7020 | ||
4c4b4cd2 PH |
7021 | if (TYPE_TARGET_TYPE (type0) != NULL) |
7022 | return TYPE_TARGET_TYPE (type0); | |
7023 | ||
7024 | nfields = TYPE_NFIELDS (type0); | |
7025 | type = type0; | |
14f9c5c9 AS |
7026 | |
7027 | for (f = 0; f < nfields; f += 1) | |
7028 | { | |
61ee279c | 7029 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type0, f)); |
4c4b4cd2 | 7030 | struct type *new_type; |
14f9c5c9 | 7031 | |
4c4b4cd2 PH |
7032 | if (is_dynamic_field (type0, f)) |
7033 | new_type = to_static_fixed_type (TYPE_TARGET_TYPE (field_type)); | |
14f9c5c9 | 7034 | else |
f192137b | 7035 | new_type = static_unwrap_type (field_type); |
4c4b4cd2 PH |
7036 | if (type == type0 && new_type != field_type) |
7037 | { | |
7038 | TYPE_TARGET_TYPE (type0) = type = alloc_type (TYPE_OBJFILE (type0)); | |
7039 | TYPE_CODE (type) = TYPE_CODE (type0); | |
7040 | INIT_CPLUS_SPECIFIC (type); | |
7041 | TYPE_NFIELDS (type) = nfields; | |
7042 | TYPE_FIELDS (type) = (struct field *) | |
7043 | TYPE_ALLOC (type, nfields * sizeof (struct field)); | |
7044 | memcpy (TYPE_FIELDS (type), TYPE_FIELDS (type0), | |
7045 | sizeof (struct field) * nfields); | |
7046 | TYPE_NAME (type) = ada_type_name (type0); | |
7047 | TYPE_TAG_NAME (type) = NULL; | |
876cecd0 | 7048 | TYPE_FIXED_INSTANCE (type) = 1; |
4c4b4cd2 PH |
7049 | TYPE_LENGTH (type) = 0; |
7050 | } | |
7051 | TYPE_FIELD_TYPE (type, f) = new_type; | |
7052 | TYPE_FIELD_NAME (type, f) = TYPE_FIELD_NAME (type0, f); | |
14f9c5c9 | 7053 | } |
14f9c5c9 AS |
7054 | return type; |
7055 | } | |
7056 | ||
4c4b4cd2 | 7057 | /* Given an object of type TYPE whose contents are at VALADDR and |
5823c3ef JB |
7058 | whose address in memory is ADDRESS, returns a revision of TYPE, |
7059 | which should be a non-dynamic-sized record, in which the variant | |
7060 | part, if any, is replaced with the appropriate branch. Looks | |
4c4b4cd2 PH |
7061 | for discriminant values in DVAL0, which can be NULL if the record |
7062 | contains the necessary discriminant values. */ | |
7063 | ||
d2e4a39e | 7064 | static struct type * |
fc1a4b47 | 7065 | to_record_with_fixed_variant_part (struct type *type, const gdb_byte *valaddr, |
4c4b4cd2 | 7066 | CORE_ADDR address, struct value *dval0) |
14f9c5c9 | 7067 | { |
d2e4a39e | 7068 | struct value *mark = value_mark (); |
4c4b4cd2 | 7069 | struct value *dval; |
d2e4a39e | 7070 | struct type *rtype; |
14f9c5c9 AS |
7071 | struct type *branch_type; |
7072 | int nfields = TYPE_NFIELDS (type); | |
4c4b4cd2 | 7073 | int variant_field = variant_field_index (type); |
14f9c5c9 | 7074 | |
4c4b4cd2 | 7075 | if (variant_field == -1) |
14f9c5c9 AS |
7076 | return type; |
7077 | ||
4c4b4cd2 PH |
7078 | if (dval0 == NULL) |
7079 | dval = value_from_contents_and_address (type, valaddr, address); | |
7080 | else | |
7081 | dval = dval0; | |
7082 | ||
14f9c5c9 AS |
7083 | rtype = alloc_type (TYPE_OBJFILE (type)); |
7084 | TYPE_CODE (rtype) = TYPE_CODE_STRUCT; | |
4c4b4cd2 PH |
7085 | INIT_CPLUS_SPECIFIC (rtype); |
7086 | TYPE_NFIELDS (rtype) = nfields; | |
d2e4a39e AS |
7087 | TYPE_FIELDS (rtype) = |
7088 | (struct field *) TYPE_ALLOC (rtype, nfields * sizeof (struct field)); | |
7089 | memcpy (TYPE_FIELDS (rtype), TYPE_FIELDS (type), | |
4c4b4cd2 | 7090 | sizeof (struct field) * nfields); |
14f9c5c9 AS |
7091 | TYPE_NAME (rtype) = ada_type_name (type); |
7092 | TYPE_TAG_NAME (rtype) = NULL; | |
876cecd0 | 7093 | TYPE_FIXED_INSTANCE (rtype) = 1; |
14f9c5c9 AS |
7094 | TYPE_LENGTH (rtype) = TYPE_LENGTH (type); |
7095 | ||
4c4b4cd2 PH |
7096 | branch_type = to_fixed_variant_branch_type |
7097 | (TYPE_FIELD_TYPE (type, variant_field), | |
d2e4a39e | 7098 | cond_offset_host (valaddr, |
4c4b4cd2 PH |
7099 | TYPE_FIELD_BITPOS (type, variant_field) |
7100 | / TARGET_CHAR_BIT), | |
d2e4a39e | 7101 | cond_offset_target (address, |
4c4b4cd2 PH |
7102 | TYPE_FIELD_BITPOS (type, variant_field) |
7103 | / TARGET_CHAR_BIT), dval); | |
d2e4a39e | 7104 | if (branch_type == NULL) |
14f9c5c9 | 7105 | { |
4c4b4cd2 PH |
7106 | int f; |
7107 | for (f = variant_field + 1; f < nfields; f += 1) | |
7108 | TYPE_FIELDS (rtype)[f - 1] = TYPE_FIELDS (rtype)[f]; | |
14f9c5c9 | 7109 | TYPE_NFIELDS (rtype) -= 1; |
14f9c5c9 AS |
7110 | } |
7111 | else | |
7112 | { | |
4c4b4cd2 PH |
7113 | TYPE_FIELD_TYPE (rtype, variant_field) = branch_type; |
7114 | TYPE_FIELD_NAME (rtype, variant_field) = "S"; | |
7115 | TYPE_FIELD_BITSIZE (rtype, variant_field) = 0; | |
14f9c5c9 | 7116 | TYPE_LENGTH (rtype) += TYPE_LENGTH (branch_type); |
14f9c5c9 | 7117 | } |
4c4b4cd2 | 7118 | TYPE_LENGTH (rtype) -= TYPE_LENGTH (TYPE_FIELD_TYPE (type, variant_field)); |
d2e4a39e | 7119 | |
4c4b4cd2 | 7120 | value_free_to_mark (mark); |
14f9c5c9 AS |
7121 | return rtype; |
7122 | } | |
7123 | ||
7124 | /* An ordinary record type (with fixed-length fields) that describes | |
7125 | the value at (TYPE0, VALADDR, ADDRESS) [see explanation at | |
7126 | beginning of this section]. Any necessary discriminants' values | |
4c4b4cd2 PH |
7127 | should be in DVAL, a record value; it may be NULL if the object |
7128 | at ADDR itself contains any necessary discriminant values. | |
7129 | Additionally, VALADDR and ADDRESS may also be NULL if no discriminant | |
7130 | values from the record are needed. Except in the case that DVAL, | |
7131 | VALADDR, and ADDRESS are all 0 or NULL, a variant field (unless | |
7132 | unchecked) is replaced by a particular branch of the variant. | |
7133 | ||
7134 | NOTE: the case in which DVAL and VALADDR are NULL and ADDRESS is 0 | |
7135 | is questionable and may be removed. It can arise during the | |
7136 | processing of an unconstrained-array-of-record type where all the | |
7137 | variant branches have exactly the same size. This is because in | |
7138 | such cases, the compiler does not bother to use the XVS convention | |
7139 | when encoding the record. I am currently dubious of this | |
7140 | shortcut and suspect the compiler should be altered. FIXME. */ | |
14f9c5c9 | 7141 | |
d2e4a39e | 7142 | static struct type * |
fc1a4b47 | 7143 | to_fixed_record_type (struct type *type0, const gdb_byte *valaddr, |
4c4b4cd2 | 7144 | CORE_ADDR address, struct value *dval) |
14f9c5c9 | 7145 | { |
d2e4a39e | 7146 | struct type *templ_type; |
14f9c5c9 | 7147 | |
876cecd0 | 7148 | if (TYPE_FIXED_INSTANCE (type0)) |
4c4b4cd2 PH |
7149 | return type0; |
7150 | ||
d2e4a39e | 7151 | templ_type = dynamic_template_type (type0); |
14f9c5c9 AS |
7152 | |
7153 | if (templ_type != NULL) | |
7154 | return template_to_fixed_record_type (templ_type, valaddr, address, dval); | |
4c4b4cd2 PH |
7155 | else if (variant_field_index (type0) >= 0) |
7156 | { | |
7157 | if (dval == NULL && valaddr == NULL && address == 0) | |
7158 | return type0; | |
7159 | return to_record_with_fixed_variant_part (type0, valaddr, address, | |
7160 | dval); | |
7161 | } | |
14f9c5c9 AS |
7162 | else |
7163 | { | |
876cecd0 | 7164 | TYPE_FIXED_INSTANCE (type0) = 1; |
14f9c5c9 AS |
7165 | return type0; |
7166 | } | |
7167 | ||
7168 | } | |
7169 | ||
7170 | /* An ordinary record type (with fixed-length fields) that describes | |
7171 | the value at (VAR_TYPE0, VALADDR, ADDRESS), where VAR_TYPE0 is a | |
7172 | union type. Any necessary discriminants' values should be in DVAL, | |
7173 | a record value. That is, this routine selects the appropriate | |
7174 | branch of the union at ADDR according to the discriminant value | |
b1f33ddd JB |
7175 | indicated in the union's type name. Returns VAR_TYPE0 itself if |
7176 | it represents a variant subject to a pragma Unchecked_Union. */ | |
14f9c5c9 | 7177 | |
d2e4a39e | 7178 | static struct type * |
fc1a4b47 | 7179 | to_fixed_variant_branch_type (struct type *var_type0, const gdb_byte *valaddr, |
4c4b4cd2 | 7180 | CORE_ADDR address, struct value *dval) |
14f9c5c9 AS |
7181 | { |
7182 | int which; | |
d2e4a39e AS |
7183 | struct type *templ_type; |
7184 | struct type *var_type; | |
14f9c5c9 AS |
7185 | |
7186 | if (TYPE_CODE (var_type0) == TYPE_CODE_PTR) | |
7187 | var_type = TYPE_TARGET_TYPE (var_type0); | |
d2e4a39e | 7188 | else |
14f9c5c9 AS |
7189 | var_type = var_type0; |
7190 | ||
7191 | templ_type = ada_find_parallel_type (var_type, "___XVU"); | |
7192 | ||
7193 | if (templ_type != NULL) | |
7194 | var_type = templ_type; | |
7195 | ||
b1f33ddd JB |
7196 | if (is_unchecked_variant (var_type, value_type (dval))) |
7197 | return var_type0; | |
d2e4a39e AS |
7198 | which = |
7199 | ada_which_variant_applies (var_type, | |
0fd88904 | 7200 | value_type (dval), value_contents (dval)); |
14f9c5c9 AS |
7201 | |
7202 | if (which < 0) | |
7203 | return empty_record (TYPE_OBJFILE (var_type)); | |
7204 | else if (is_dynamic_field (var_type, which)) | |
4c4b4cd2 | 7205 | return to_fixed_record_type |
d2e4a39e AS |
7206 | (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (var_type, which)), |
7207 | valaddr, address, dval); | |
4c4b4cd2 | 7208 | else if (variant_field_index (TYPE_FIELD_TYPE (var_type, which)) >= 0) |
d2e4a39e AS |
7209 | return |
7210 | to_fixed_record_type | |
7211 | (TYPE_FIELD_TYPE (var_type, which), valaddr, address, dval); | |
14f9c5c9 AS |
7212 | else |
7213 | return TYPE_FIELD_TYPE (var_type, which); | |
7214 | } | |
7215 | ||
7216 | /* Assuming that TYPE0 is an array type describing the type of a value | |
7217 | at ADDR, and that DVAL describes a record containing any | |
7218 | discriminants used in TYPE0, returns a type for the value that | |
7219 | contains no dynamic components (that is, no components whose sizes | |
7220 | are determined by run-time quantities). Unless IGNORE_TOO_BIG is | |
7221 | true, gives an error message if the resulting type's size is over | |
4c4b4cd2 | 7222 | varsize_limit. */ |
14f9c5c9 | 7223 | |
d2e4a39e AS |
7224 | static struct type * |
7225 | to_fixed_array_type (struct type *type0, struct value *dval, | |
4c4b4cd2 | 7226 | int ignore_too_big) |
14f9c5c9 | 7227 | { |
d2e4a39e AS |
7228 | struct type *index_type_desc; |
7229 | struct type *result; | |
14f9c5c9 | 7230 | |
4c4b4cd2 | 7231 | if (ada_is_packed_array_type (type0) /* revisit? */ |
876cecd0 | 7232 | || TYPE_FIXED_INSTANCE (type0)) |
4c4b4cd2 | 7233 | return type0; |
14f9c5c9 AS |
7234 | |
7235 | index_type_desc = ada_find_parallel_type (type0, "___XA"); | |
7236 | if (index_type_desc == NULL) | |
7237 | { | |
61ee279c | 7238 | struct type *elt_type0 = ada_check_typedef (TYPE_TARGET_TYPE (type0)); |
14f9c5c9 | 7239 | /* NOTE: elt_type---the fixed version of elt_type0---should never |
4c4b4cd2 PH |
7240 | depend on the contents of the array in properly constructed |
7241 | debugging data. */ | |
529cad9c PH |
7242 | /* Create a fixed version of the array element type. |
7243 | We're not providing the address of an element here, | |
e1d5a0d2 | 7244 | and thus the actual object value cannot be inspected to do |
529cad9c PH |
7245 | the conversion. This should not be a problem, since arrays of |
7246 | unconstrained objects are not allowed. In particular, all | |
7247 | the elements of an array of a tagged type should all be of | |
7248 | the same type specified in the debugging info. No need to | |
7249 | consult the object tag. */ | |
1ed6ede0 | 7250 | struct type *elt_type = ada_to_fixed_type (elt_type0, 0, 0, dval, 1); |
14f9c5c9 AS |
7251 | |
7252 | if (elt_type0 == elt_type) | |
4c4b4cd2 | 7253 | result = type0; |
14f9c5c9 | 7254 | else |
4c4b4cd2 PH |
7255 | result = create_array_type (alloc_type (TYPE_OBJFILE (type0)), |
7256 | elt_type, TYPE_INDEX_TYPE (type0)); | |
14f9c5c9 AS |
7257 | } |
7258 | else | |
7259 | { | |
7260 | int i; | |
7261 | struct type *elt_type0; | |
7262 | ||
7263 | elt_type0 = type0; | |
7264 | for (i = TYPE_NFIELDS (index_type_desc); i > 0; i -= 1) | |
4c4b4cd2 | 7265 | elt_type0 = TYPE_TARGET_TYPE (elt_type0); |
14f9c5c9 AS |
7266 | |
7267 | /* NOTE: result---the fixed version of elt_type0---should never | |
4c4b4cd2 PH |
7268 | depend on the contents of the array in properly constructed |
7269 | debugging data. */ | |
529cad9c PH |
7270 | /* Create a fixed version of the array element type. |
7271 | We're not providing the address of an element here, | |
e1d5a0d2 | 7272 | and thus the actual object value cannot be inspected to do |
529cad9c PH |
7273 | the conversion. This should not be a problem, since arrays of |
7274 | unconstrained objects are not allowed. In particular, all | |
7275 | the elements of an array of a tagged type should all be of | |
7276 | the same type specified in the debugging info. No need to | |
7277 | consult the object tag. */ | |
1ed6ede0 JB |
7278 | result = |
7279 | ada_to_fixed_type (ada_check_typedef (elt_type0), 0, 0, dval, 1); | |
14f9c5c9 | 7280 | for (i = TYPE_NFIELDS (index_type_desc) - 1; i >= 0; i -= 1) |
4c4b4cd2 PH |
7281 | { |
7282 | struct type *range_type = | |
7283 | to_fixed_range_type (TYPE_FIELD_NAME (index_type_desc, i), | |
7284 | dval, TYPE_OBJFILE (type0)); | |
7285 | result = create_array_type (alloc_type (TYPE_OBJFILE (type0)), | |
7286 | result, range_type); | |
7287 | } | |
d2e4a39e | 7288 | if (!ignore_too_big && TYPE_LENGTH (result) > varsize_limit) |
323e0a4a | 7289 | error (_("array type with dynamic size is larger than varsize-limit")); |
14f9c5c9 AS |
7290 | } |
7291 | ||
876cecd0 | 7292 | TYPE_FIXED_INSTANCE (result) = 1; |
14f9c5c9 | 7293 | return result; |
d2e4a39e | 7294 | } |
14f9c5c9 AS |
7295 | |
7296 | ||
7297 | /* A standard type (containing no dynamically sized components) | |
7298 | corresponding to TYPE for the value (TYPE, VALADDR, ADDRESS) | |
7299 | DVAL describes a record containing any discriminants used in TYPE0, | |
4c4b4cd2 | 7300 | and may be NULL if there are none, or if the object of type TYPE at |
529cad9c PH |
7301 | ADDRESS or in VALADDR contains these discriminants. |
7302 | ||
1ed6ede0 JB |
7303 | If CHECK_TAG is not null, in the case of tagged types, this function |
7304 | attempts to locate the object's tag and use it to compute the actual | |
7305 | type. However, when ADDRESS is null, we cannot use it to determine the | |
7306 | location of the tag, and therefore compute the tagged type's actual type. | |
7307 | So we return the tagged type without consulting the tag. */ | |
529cad9c | 7308 | |
f192137b JB |
7309 | static struct type * |
7310 | ada_to_fixed_type_1 (struct type *type, const gdb_byte *valaddr, | |
1ed6ede0 | 7311 | CORE_ADDR address, struct value *dval, int check_tag) |
14f9c5c9 | 7312 | { |
61ee279c | 7313 | type = ada_check_typedef (type); |
d2e4a39e AS |
7314 | switch (TYPE_CODE (type)) |
7315 | { | |
7316 | default: | |
14f9c5c9 | 7317 | return type; |
d2e4a39e | 7318 | case TYPE_CODE_STRUCT: |
4c4b4cd2 | 7319 | { |
76a01679 | 7320 | struct type *static_type = to_static_fixed_type (type); |
1ed6ede0 JB |
7321 | struct type *fixed_record_type = |
7322 | to_fixed_record_type (type, valaddr, address, NULL); | |
529cad9c PH |
7323 | /* If STATIC_TYPE is a tagged type and we know the object's address, |
7324 | then we can determine its tag, and compute the object's actual | |
1ed6ede0 JB |
7325 | type from there. Note that we have to use the fixed record |
7326 | type (the parent part of the record may have dynamic fields | |
7327 | and the way the location of _tag is expressed may depend on | |
7328 | them). */ | |
529cad9c | 7329 | |
1ed6ede0 | 7330 | if (check_tag && address != 0 && ada_is_tagged_type (static_type, 0)) |
76a01679 JB |
7331 | { |
7332 | struct type *real_type = | |
1ed6ede0 JB |
7333 | type_from_tag (value_tag_from_contents_and_address |
7334 | (fixed_record_type, | |
7335 | valaddr, | |
7336 | address)); | |
76a01679 | 7337 | if (real_type != NULL) |
1ed6ede0 | 7338 | return to_fixed_record_type (real_type, valaddr, address, NULL); |
76a01679 | 7339 | } |
4af88198 JB |
7340 | |
7341 | /* Check to see if there is a parallel ___XVZ variable. | |
7342 | If there is, then it provides the actual size of our type. */ | |
7343 | else if (ada_type_name (fixed_record_type) != NULL) | |
7344 | { | |
7345 | char *name = ada_type_name (fixed_record_type); | |
7346 | char *xvz_name = alloca (strlen (name) + 7 /* "___XVZ\0" */); | |
7347 | int xvz_found = 0; | |
7348 | LONGEST size; | |
7349 | ||
7350 | sprintf (xvz_name, "%s___XVZ", name); | |
7351 | size = get_int_var_value (xvz_name, &xvz_found); | |
7352 | if (xvz_found && TYPE_LENGTH (fixed_record_type) != size) | |
7353 | { | |
7354 | fixed_record_type = copy_type (fixed_record_type); | |
7355 | TYPE_LENGTH (fixed_record_type) = size; | |
7356 | ||
7357 | /* The FIXED_RECORD_TYPE may have be a stub. We have | |
7358 | observed this when the debugging info is STABS, and | |
7359 | apparently it is something that is hard to fix. | |
7360 | ||
7361 | In practice, we don't need the actual type definition | |
7362 | at all, because the presence of the XVZ variable allows us | |
7363 | to assume that there must be a XVS type as well, which we | |
7364 | should be able to use later, when we need the actual type | |
7365 | definition. | |
7366 | ||
7367 | In the meantime, pretend that the "fixed" type we are | |
7368 | returning is NOT a stub, because this can cause trouble | |
7369 | when using this type to create new types targeting it. | |
7370 | Indeed, the associated creation routines often check | |
7371 | whether the target type is a stub and will try to replace | |
7372 | it, thus using a type with the wrong size. This, in turn, | |
7373 | might cause the new type to have the wrong size too. | |
7374 | Consider the case of an array, for instance, where the size | |
7375 | of the array is computed from the number of elements in | |
7376 | our array multiplied by the size of its element. */ | |
7377 | TYPE_STUB (fixed_record_type) = 0; | |
7378 | } | |
7379 | } | |
1ed6ede0 | 7380 | return fixed_record_type; |
4c4b4cd2 | 7381 | } |
d2e4a39e | 7382 | case TYPE_CODE_ARRAY: |
4c4b4cd2 | 7383 | return to_fixed_array_type (type, dval, 1); |
d2e4a39e AS |
7384 | case TYPE_CODE_UNION: |
7385 | if (dval == NULL) | |
4c4b4cd2 | 7386 | return type; |
d2e4a39e | 7387 | else |
4c4b4cd2 | 7388 | return to_fixed_variant_branch_type (type, valaddr, address, dval); |
d2e4a39e | 7389 | } |
14f9c5c9 AS |
7390 | } |
7391 | ||
f192137b JB |
7392 | /* The same as ada_to_fixed_type_1, except that it preserves the type |
7393 | if it is a TYPE_CODE_TYPEDEF of a type that is already fixed. | |
7394 | ada_to_fixed_type_1 would return the type referenced by TYPE. */ | |
7395 | ||
7396 | struct type * | |
7397 | ada_to_fixed_type (struct type *type, const gdb_byte *valaddr, | |
7398 | CORE_ADDR address, struct value *dval, int check_tag) | |
7399 | ||
7400 | { | |
7401 | struct type *fixed_type = | |
7402 | ada_to_fixed_type_1 (type, valaddr, address, dval, check_tag); | |
7403 | ||
7404 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF | |
7405 | && TYPE_TARGET_TYPE (type) == fixed_type) | |
7406 | return type; | |
7407 | ||
7408 | return fixed_type; | |
7409 | } | |
7410 | ||
14f9c5c9 | 7411 | /* A standard (static-sized) type corresponding as well as possible to |
4c4b4cd2 | 7412 | TYPE0, but based on no runtime data. */ |
14f9c5c9 | 7413 | |
d2e4a39e AS |
7414 | static struct type * |
7415 | to_static_fixed_type (struct type *type0) | |
14f9c5c9 | 7416 | { |
d2e4a39e | 7417 | struct type *type; |
14f9c5c9 AS |
7418 | |
7419 | if (type0 == NULL) | |
7420 | return NULL; | |
7421 | ||
876cecd0 | 7422 | if (TYPE_FIXED_INSTANCE (type0)) |
4c4b4cd2 PH |
7423 | return type0; |
7424 | ||
61ee279c | 7425 | type0 = ada_check_typedef (type0); |
d2e4a39e | 7426 | |
14f9c5c9 AS |
7427 | switch (TYPE_CODE (type0)) |
7428 | { | |
7429 | default: | |
7430 | return type0; | |
7431 | case TYPE_CODE_STRUCT: | |
7432 | type = dynamic_template_type (type0); | |
d2e4a39e | 7433 | if (type != NULL) |
4c4b4cd2 PH |
7434 | return template_to_static_fixed_type (type); |
7435 | else | |
7436 | return template_to_static_fixed_type (type0); | |
14f9c5c9 AS |
7437 | case TYPE_CODE_UNION: |
7438 | type = ada_find_parallel_type (type0, "___XVU"); | |
7439 | if (type != NULL) | |
4c4b4cd2 PH |
7440 | return template_to_static_fixed_type (type); |
7441 | else | |
7442 | return template_to_static_fixed_type (type0); | |
14f9c5c9 AS |
7443 | } |
7444 | } | |
7445 | ||
4c4b4cd2 PH |
7446 | /* A static approximation of TYPE with all type wrappers removed. */ |
7447 | ||
d2e4a39e AS |
7448 | static struct type * |
7449 | static_unwrap_type (struct type *type) | |
14f9c5c9 AS |
7450 | { |
7451 | if (ada_is_aligner_type (type)) | |
7452 | { | |
61ee279c | 7453 | struct type *type1 = TYPE_FIELD_TYPE (ada_check_typedef (type), 0); |
14f9c5c9 | 7454 | if (ada_type_name (type1) == NULL) |
4c4b4cd2 | 7455 | TYPE_NAME (type1) = ada_type_name (type); |
14f9c5c9 AS |
7456 | |
7457 | return static_unwrap_type (type1); | |
7458 | } | |
d2e4a39e | 7459 | else |
14f9c5c9 | 7460 | { |
d2e4a39e AS |
7461 | struct type *raw_real_type = ada_get_base_type (type); |
7462 | if (raw_real_type == type) | |
4c4b4cd2 | 7463 | return type; |
14f9c5c9 | 7464 | else |
4c4b4cd2 | 7465 | return to_static_fixed_type (raw_real_type); |
14f9c5c9 AS |
7466 | } |
7467 | } | |
7468 | ||
7469 | /* In some cases, incomplete and private types require | |
4c4b4cd2 | 7470 | cross-references that are not resolved as records (for example, |
14f9c5c9 AS |
7471 | type Foo; |
7472 | type FooP is access Foo; | |
7473 | V: FooP; | |
7474 | type Foo is array ...; | |
4c4b4cd2 | 7475 | ). In these cases, since there is no mechanism for producing |
14f9c5c9 AS |
7476 | cross-references to such types, we instead substitute for FooP a |
7477 | stub enumeration type that is nowhere resolved, and whose tag is | |
4c4b4cd2 | 7478 | the name of the actual type. Call these types "non-record stubs". */ |
14f9c5c9 AS |
7479 | |
7480 | /* A type equivalent to TYPE that is not a non-record stub, if one | |
4c4b4cd2 PH |
7481 | exists, otherwise TYPE. */ |
7482 | ||
d2e4a39e | 7483 | struct type * |
61ee279c | 7484 | ada_check_typedef (struct type *type) |
14f9c5c9 | 7485 | { |
727e3d2e JB |
7486 | if (type == NULL) |
7487 | return NULL; | |
7488 | ||
14f9c5c9 AS |
7489 | CHECK_TYPEDEF (type); |
7490 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_ENUM | |
529cad9c | 7491 | || !TYPE_STUB (type) |
14f9c5c9 AS |
7492 | || TYPE_TAG_NAME (type) == NULL) |
7493 | return type; | |
d2e4a39e | 7494 | else |
14f9c5c9 | 7495 | { |
d2e4a39e AS |
7496 | char *name = TYPE_TAG_NAME (type); |
7497 | struct type *type1 = ada_find_any_type (name); | |
14f9c5c9 AS |
7498 | return (type1 == NULL) ? type : type1; |
7499 | } | |
7500 | } | |
7501 | ||
7502 | /* A value representing the data at VALADDR/ADDRESS as described by | |
7503 | type TYPE0, but with a standard (static-sized) type that correctly | |
7504 | describes it. If VAL0 is not NULL and TYPE0 already is a standard | |
7505 | type, then return VAL0 [this feature is simply to avoid redundant | |
4c4b4cd2 | 7506 | creation of struct values]. */ |
14f9c5c9 | 7507 | |
4c4b4cd2 PH |
7508 | static struct value * |
7509 | ada_to_fixed_value_create (struct type *type0, CORE_ADDR address, | |
7510 | struct value *val0) | |
14f9c5c9 | 7511 | { |
1ed6ede0 | 7512 | struct type *type = ada_to_fixed_type (type0, 0, address, NULL, 1); |
14f9c5c9 AS |
7513 | if (type == type0 && val0 != NULL) |
7514 | return val0; | |
d2e4a39e | 7515 | else |
4c4b4cd2 PH |
7516 | return value_from_contents_and_address (type, 0, address); |
7517 | } | |
7518 | ||
7519 | /* A value representing VAL, but with a standard (static-sized) type | |
7520 | that correctly describes it. Does not necessarily create a new | |
7521 | value. */ | |
7522 | ||
7523 | static struct value * | |
7524 | ada_to_fixed_value (struct value *val) | |
7525 | { | |
df407dfe AC |
7526 | return ada_to_fixed_value_create (value_type (val), |
7527 | VALUE_ADDRESS (val) + value_offset (val), | |
4c4b4cd2 | 7528 | val); |
14f9c5c9 AS |
7529 | } |
7530 | ||
4c4b4cd2 | 7531 | /* A value representing VAL, but with a standard (static-sized) type |
14f9c5c9 AS |
7532 | chosen to approximate the real type of VAL as well as possible, but |
7533 | without consulting any runtime values. For Ada dynamic-sized | |
4c4b4cd2 | 7534 | types, therefore, the type of the result is likely to be inaccurate. */ |
14f9c5c9 | 7535 | |
d2e4a39e AS |
7536 | struct value * |
7537 | ada_to_static_fixed_value (struct value *val) | |
14f9c5c9 | 7538 | { |
d2e4a39e | 7539 | struct type *type = |
df407dfe AC |
7540 | to_static_fixed_type (static_unwrap_type (value_type (val))); |
7541 | if (type == value_type (val)) | |
14f9c5c9 AS |
7542 | return val; |
7543 | else | |
4c4b4cd2 | 7544 | return coerce_unspec_val_to_type (val, type); |
14f9c5c9 | 7545 | } |
d2e4a39e | 7546 | \f |
14f9c5c9 | 7547 | |
14f9c5c9 AS |
7548 | /* Attributes */ |
7549 | ||
4c4b4cd2 PH |
7550 | /* Table mapping attribute numbers to names. |
7551 | NOTE: Keep up to date with enum ada_attribute definition in ada-lang.h. */ | |
14f9c5c9 | 7552 | |
d2e4a39e | 7553 | static const char *attribute_names[] = { |
14f9c5c9 AS |
7554 | "<?>", |
7555 | ||
d2e4a39e | 7556 | "first", |
14f9c5c9 AS |
7557 | "last", |
7558 | "length", | |
7559 | "image", | |
14f9c5c9 AS |
7560 | "max", |
7561 | "min", | |
4c4b4cd2 PH |
7562 | "modulus", |
7563 | "pos", | |
7564 | "size", | |
7565 | "tag", | |
14f9c5c9 | 7566 | "val", |
14f9c5c9 AS |
7567 | 0 |
7568 | }; | |
7569 | ||
d2e4a39e | 7570 | const char * |
4c4b4cd2 | 7571 | ada_attribute_name (enum exp_opcode n) |
14f9c5c9 | 7572 | { |
4c4b4cd2 PH |
7573 | if (n >= OP_ATR_FIRST && n <= (int) OP_ATR_VAL) |
7574 | return attribute_names[n - OP_ATR_FIRST + 1]; | |
14f9c5c9 AS |
7575 | else |
7576 | return attribute_names[0]; | |
7577 | } | |
7578 | ||
4c4b4cd2 | 7579 | /* Evaluate the 'POS attribute applied to ARG. */ |
14f9c5c9 | 7580 | |
4c4b4cd2 PH |
7581 | static LONGEST |
7582 | pos_atr (struct value *arg) | |
14f9c5c9 | 7583 | { |
24209737 PH |
7584 | struct value *val = coerce_ref (arg); |
7585 | struct type *type = value_type (val); | |
14f9c5c9 | 7586 | |
d2e4a39e | 7587 | if (!discrete_type_p (type)) |
323e0a4a | 7588 | error (_("'POS only defined on discrete types")); |
14f9c5c9 AS |
7589 | |
7590 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) | |
7591 | { | |
7592 | int i; | |
24209737 | 7593 | LONGEST v = value_as_long (val); |
14f9c5c9 | 7594 | |
d2e4a39e | 7595 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) |
4c4b4cd2 PH |
7596 | { |
7597 | if (v == TYPE_FIELD_BITPOS (type, i)) | |
7598 | return i; | |
7599 | } | |
323e0a4a | 7600 | error (_("enumeration value is invalid: can't find 'POS")); |
14f9c5c9 AS |
7601 | } |
7602 | else | |
24209737 | 7603 | return value_as_long (val); |
4c4b4cd2 PH |
7604 | } |
7605 | ||
7606 | static struct value * | |
3cb382c9 | 7607 | value_pos_atr (struct type *type, struct value *arg) |
4c4b4cd2 | 7608 | { |
3cb382c9 | 7609 | return value_from_longest (type, pos_atr (arg)); |
14f9c5c9 AS |
7610 | } |
7611 | ||
4c4b4cd2 | 7612 | /* Evaluate the TYPE'VAL attribute applied to ARG. */ |
14f9c5c9 | 7613 | |
d2e4a39e AS |
7614 | static struct value * |
7615 | value_val_atr (struct type *type, struct value *arg) | |
14f9c5c9 | 7616 | { |
d2e4a39e | 7617 | if (!discrete_type_p (type)) |
323e0a4a | 7618 | error (_("'VAL only defined on discrete types")); |
df407dfe | 7619 | if (!integer_type_p (value_type (arg))) |
323e0a4a | 7620 | error (_("'VAL requires integral argument")); |
14f9c5c9 AS |
7621 | |
7622 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) | |
7623 | { | |
7624 | long pos = value_as_long (arg); | |
7625 | if (pos < 0 || pos >= TYPE_NFIELDS (type)) | |
323e0a4a | 7626 | error (_("argument to 'VAL out of range")); |
d2e4a39e | 7627 | return value_from_longest (type, TYPE_FIELD_BITPOS (type, pos)); |
14f9c5c9 AS |
7628 | } |
7629 | else | |
7630 | return value_from_longest (type, value_as_long (arg)); | |
7631 | } | |
14f9c5c9 | 7632 | \f |
d2e4a39e | 7633 | |
4c4b4cd2 | 7634 | /* Evaluation */ |
14f9c5c9 | 7635 | |
4c4b4cd2 PH |
7636 | /* True if TYPE appears to be an Ada character type. |
7637 | [At the moment, this is true only for Character and Wide_Character; | |
7638 | It is a heuristic test that could stand improvement]. */ | |
14f9c5c9 | 7639 | |
d2e4a39e AS |
7640 | int |
7641 | ada_is_character_type (struct type *type) | |
14f9c5c9 | 7642 | { |
7b9f71f2 JB |
7643 | const char *name; |
7644 | ||
7645 | /* If the type code says it's a character, then assume it really is, | |
7646 | and don't check any further. */ | |
7647 | if (TYPE_CODE (type) == TYPE_CODE_CHAR) | |
7648 | return 1; | |
7649 | ||
7650 | /* Otherwise, assume it's a character type iff it is a discrete type | |
7651 | with a known character type name. */ | |
7652 | name = ada_type_name (type); | |
7653 | return (name != NULL | |
7654 | && (TYPE_CODE (type) == TYPE_CODE_INT | |
7655 | || TYPE_CODE (type) == TYPE_CODE_RANGE) | |
7656 | && (strcmp (name, "character") == 0 | |
7657 | || strcmp (name, "wide_character") == 0 | |
5a517ebd | 7658 | || strcmp (name, "wide_wide_character") == 0 |
7b9f71f2 | 7659 | || strcmp (name, "unsigned char") == 0)); |
14f9c5c9 AS |
7660 | } |
7661 | ||
4c4b4cd2 | 7662 | /* True if TYPE appears to be an Ada string type. */ |
14f9c5c9 AS |
7663 | |
7664 | int | |
ebf56fd3 | 7665 | ada_is_string_type (struct type *type) |
14f9c5c9 | 7666 | { |
61ee279c | 7667 | type = ada_check_typedef (type); |
d2e4a39e | 7668 | if (type != NULL |
14f9c5c9 | 7669 | && TYPE_CODE (type) != TYPE_CODE_PTR |
76a01679 JB |
7670 | && (ada_is_simple_array_type (type) |
7671 | || ada_is_array_descriptor_type (type)) | |
14f9c5c9 AS |
7672 | && ada_array_arity (type) == 1) |
7673 | { | |
7674 | struct type *elttype = ada_array_element_type (type, 1); | |
7675 | ||
7676 | return ada_is_character_type (elttype); | |
7677 | } | |
d2e4a39e | 7678 | else |
14f9c5c9 AS |
7679 | return 0; |
7680 | } | |
7681 | ||
7682 | ||
7683 | /* True if TYPE is a struct type introduced by the compiler to force the | |
7684 | alignment of a value. Such types have a single field with a | |
4c4b4cd2 | 7685 | distinctive name. */ |
14f9c5c9 AS |
7686 | |
7687 | int | |
ebf56fd3 | 7688 | ada_is_aligner_type (struct type *type) |
14f9c5c9 | 7689 | { |
61ee279c | 7690 | type = ada_check_typedef (type); |
714e53ab PH |
7691 | |
7692 | /* If we can find a parallel XVS type, then the XVS type should | |
7693 | be used instead of this type. And hence, this is not an aligner | |
7694 | type. */ | |
7695 | if (ada_find_parallel_type (type, "___XVS") != NULL) | |
7696 | return 0; | |
7697 | ||
14f9c5c9 | 7698 | return (TYPE_CODE (type) == TYPE_CODE_STRUCT |
4c4b4cd2 PH |
7699 | && TYPE_NFIELDS (type) == 1 |
7700 | && strcmp (TYPE_FIELD_NAME (type, 0), "F") == 0); | |
14f9c5c9 AS |
7701 | } |
7702 | ||
7703 | /* If there is an ___XVS-convention type parallel to SUBTYPE, return | |
4c4b4cd2 | 7704 | the parallel type. */ |
14f9c5c9 | 7705 | |
d2e4a39e AS |
7706 | struct type * |
7707 | ada_get_base_type (struct type *raw_type) | |
14f9c5c9 | 7708 | { |
d2e4a39e AS |
7709 | struct type *real_type_namer; |
7710 | struct type *raw_real_type; | |
14f9c5c9 AS |
7711 | |
7712 | if (raw_type == NULL || TYPE_CODE (raw_type) != TYPE_CODE_STRUCT) | |
7713 | return raw_type; | |
7714 | ||
7715 | real_type_namer = ada_find_parallel_type (raw_type, "___XVS"); | |
d2e4a39e | 7716 | if (real_type_namer == NULL |
14f9c5c9 AS |
7717 | || TYPE_CODE (real_type_namer) != TYPE_CODE_STRUCT |
7718 | || TYPE_NFIELDS (real_type_namer) != 1) | |
7719 | return raw_type; | |
7720 | ||
7721 | raw_real_type = ada_find_any_type (TYPE_FIELD_NAME (real_type_namer, 0)); | |
d2e4a39e | 7722 | if (raw_real_type == NULL) |
14f9c5c9 AS |
7723 | return raw_type; |
7724 | else | |
7725 | return raw_real_type; | |
d2e4a39e | 7726 | } |
14f9c5c9 | 7727 | |
4c4b4cd2 | 7728 | /* The type of value designated by TYPE, with all aligners removed. */ |
14f9c5c9 | 7729 | |
d2e4a39e AS |
7730 | struct type * |
7731 | ada_aligned_type (struct type *type) | |
14f9c5c9 AS |
7732 | { |
7733 | if (ada_is_aligner_type (type)) | |
7734 | return ada_aligned_type (TYPE_FIELD_TYPE (type, 0)); | |
7735 | else | |
7736 | return ada_get_base_type (type); | |
7737 | } | |
7738 | ||
7739 | ||
7740 | /* The address of the aligned value in an object at address VALADDR | |
4c4b4cd2 | 7741 | having type TYPE. Assumes ada_is_aligner_type (TYPE). */ |
14f9c5c9 | 7742 | |
fc1a4b47 AC |
7743 | const gdb_byte * |
7744 | ada_aligned_value_addr (struct type *type, const gdb_byte *valaddr) | |
14f9c5c9 | 7745 | { |
d2e4a39e | 7746 | if (ada_is_aligner_type (type)) |
14f9c5c9 | 7747 | return ada_aligned_value_addr (TYPE_FIELD_TYPE (type, 0), |
4c4b4cd2 PH |
7748 | valaddr + |
7749 | TYPE_FIELD_BITPOS (type, | |
7750 | 0) / TARGET_CHAR_BIT); | |
14f9c5c9 AS |
7751 | else |
7752 | return valaddr; | |
7753 | } | |
7754 | ||
4c4b4cd2 PH |
7755 | |
7756 | ||
14f9c5c9 | 7757 | /* The printed representation of an enumeration literal with encoded |
4c4b4cd2 | 7758 | name NAME. The value is good to the next call of ada_enum_name. */ |
d2e4a39e AS |
7759 | const char * |
7760 | ada_enum_name (const char *name) | |
14f9c5c9 | 7761 | { |
4c4b4cd2 PH |
7762 | static char *result; |
7763 | static size_t result_len = 0; | |
d2e4a39e | 7764 | char *tmp; |
14f9c5c9 | 7765 | |
4c4b4cd2 PH |
7766 | /* First, unqualify the enumeration name: |
7767 | 1. Search for the last '.' character. If we find one, then skip | |
76a01679 JB |
7768 | all the preceeding characters, the unqualified name starts |
7769 | right after that dot. | |
4c4b4cd2 | 7770 | 2. Otherwise, we may be debugging on a target where the compiler |
76a01679 JB |
7771 | translates dots into "__". Search forward for double underscores, |
7772 | but stop searching when we hit an overloading suffix, which is | |
7773 | of the form "__" followed by digits. */ | |
4c4b4cd2 | 7774 | |
c3e5cd34 PH |
7775 | tmp = strrchr (name, '.'); |
7776 | if (tmp != NULL) | |
4c4b4cd2 PH |
7777 | name = tmp + 1; |
7778 | else | |
14f9c5c9 | 7779 | { |
4c4b4cd2 PH |
7780 | while ((tmp = strstr (name, "__")) != NULL) |
7781 | { | |
7782 | if (isdigit (tmp[2])) | |
7783 | break; | |
7784 | else | |
7785 | name = tmp + 2; | |
7786 | } | |
14f9c5c9 AS |
7787 | } |
7788 | ||
7789 | if (name[0] == 'Q') | |
7790 | { | |
14f9c5c9 AS |
7791 | int v; |
7792 | if (name[1] == 'U' || name[1] == 'W') | |
4c4b4cd2 PH |
7793 | { |
7794 | if (sscanf (name + 2, "%x", &v) != 1) | |
7795 | return name; | |
7796 | } | |
14f9c5c9 | 7797 | else |
4c4b4cd2 | 7798 | return name; |
14f9c5c9 | 7799 | |
4c4b4cd2 | 7800 | GROW_VECT (result, result_len, 16); |
14f9c5c9 | 7801 | if (isascii (v) && isprint (v)) |
4c4b4cd2 | 7802 | sprintf (result, "'%c'", v); |
14f9c5c9 | 7803 | else if (name[1] == 'U') |
4c4b4cd2 | 7804 | sprintf (result, "[\"%02x\"]", v); |
14f9c5c9 | 7805 | else |
4c4b4cd2 | 7806 | sprintf (result, "[\"%04x\"]", v); |
14f9c5c9 AS |
7807 | |
7808 | return result; | |
7809 | } | |
d2e4a39e | 7810 | else |
4c4b4cd2 | 7811 | { |
c3e5cd34 PH |
7812 | tmp = strstr (name, "__"); |
7813 | if (tmp == NULL) | |
7814 | tmp = strstr (name, "$"); | |
7815 | if (tmp != NULL) | |
4c4b4cd2 PH |
7816 | { |
7817 | GROW_VECT (result, result_len, tmp - name + 1); | |
7818 | strncpy (result, name, tmp - name); | |
7819 | result[tmp - name] = '\0'; | |
7820 | return result; | |
7821 | } | |
7822 | ||
7823 | return name; | |
7824 | } | |
14f9c5c9 AS |
7825 | } |
7826 | ||
d2e4a39e | 7827 | static struct value * |
ebf56fd3 | 7828 | evaluate_subexp (struct type *expect_type, struct expression *exp, int *pos, |
4c4b4cd2 | 7829 | enum noside noside) |
14f9c5c9 | 7830 | { |
76a01679 | 7831 | return (*exp->language_defn->la_exp_desc->evaluate_exp) |
4c4b4cd2 | 7832 | (expect_type, exp, pos, noside); |
14f9c5c9 AS |
7833 | } |
7834 | ||
7835 | /* Evaluate the subexpression of EXP starting at *POS as for | |
7836 | evaluate_type, updating *POS to point just past the evaluated | |
4c4b4cd2 | 7837 | expression. */ |
14f9c5c9 | 7838 | |
d2e4a39e AS |
7839 | static struct value * |
7840 | evaluate_subexp_type (struct expression *exp, int *pos) | |
14f9c5c9 | 7841 | { |
4c4b4cd2 | 7842 | return (*exp->language_defn->la_exp_desc->evaluate_exp) |
14f9c5c9 AS |
7843 | (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); |
7844 | } | |
7845 | ||
7846 | /* If VAL is wrapped in an aligner or subtype wrapper, return the | |
4c4b4cd2 | 7847 | value it wraps. */ |
14f9c5c9 | 7848 | |
d2e4a39e AS |
7849 | static struct value * |
7850 | unwrap_value (struct value *val) | |
14f9c5c9 | 7851 | { |
df407dfe | 7852 | struct type *type = ada_check_typedef (value_type (val)); |
14f9c5c9 AS |
7853 | if (ada_is_aligner_type (type)) |
7854 | { | |
de4d072f | 7855 | struct value *v = ada_value_struct_elt (val, "F", 0); |
df407dfe | 7856 | struct type *val_type = ada_check_typedef (value_type (v)); |
14f9c5c9 | 7857 | if (ada_type_name (val_type) == NULL) |
4c4b4cd2 | 7858 | TYPE_NAME (val_type) = ada_type_name (type); |
14f9c5c9 AS |
7859 | |
7860 | return unwrap_value (v); | |
7861 | } | |
d2e4a39e | 7862 | else |
14f9c5c9 | 7863 | { |
d2e4a39e | 7864 | struct type *raw_real_type = |
61ee279c | 7865 | ada_check_typedef (ada_get_base_type (type)); |
d2e4a39e | 7866 | |
14f9c5c9 | 7867 | if (type == raw_real_type) |
4c4b4cd2 | 7868 | return val; |
14f9c5c9 | 7869 | |
d2e4a39e | 7870 | return |
4c4b4cd2 PH |
7871 | coerce_unspec_val_to_type |
7872 | (val, ada_to_fixed_type (raw_real_type, 0, | |
df407dfe | 7873 | VALUE_ADDRESS (val) + value_offset (val), |
1ed6ede0 | 7874 | NULL, 1)); |
14f9c5c9 AS |
7875 | } |
7876 | } | |
d2e4a39e AS |
7877 | |
7878 | static struct value * | |
7879 | cast_to_fixed (struct type *type, struct value *arg) | |
14f9c5c9 AS |
7880 | { |
7881 | LONGEST val; | |
7882 | ||
df407dfe | 7883 | if (type == value_type (arg)) |
14f9c5c9 | 7884 | return arg; |
df407dfe | 7885 | else if (ada_is_fixed_point_type (value_type (arg))) |
d2e4a39e | 7886 | val = ada_float_to_fixed (type, |
df407dfe | 7887 | ada_fixed_to_float (value_type (arg), |
4c4b4cd2 | 7888 | value_as_long (arg))); |
d2e4a39e | 7889 | else |
14f9c5c9 | 7890 | { |
a53b7a21 | 7891 | DOUBLEST argd = value_as_double (arg); |
14f9c5c9 AS |
7892 | val = ada_float_to_fixed (type, argd); |
7893 | } | |
7894 | ||
7895 | return value_from_longest (type, val); | |
7896 | } | |
7897 | ||
d2e4a39e | 7898 | static struct value * |
a53b7a21 | 7899 | cast_from_fixed (struct type *type, struct value *arg) |
14f9c5c9 | 7900 | { |
df407dfe | 7901 | DOUBLEST val = ada_fixed_to_float (value_type (arg), |
4c4b4cd2 | 7902 | value_as_long (arg)); |
a53b7a21 | 7903 | return value_from_double (type, val); |
14f9c5c9 AS |
7904 | } |
7905 | ||
4c4b4cd2 PH |
7906 | /* Coerce VAL as necessary for assignment to an lval of type TYPE, and |
7907 | return the converted value. */ | |
7908 | ||
d2e4a39e AS |
7909 | static struct value * |
7910 | coerce_for_assign (struct type *type, struct value *val) | |
14f9c5c9 | 7911 | { |
df407dfe | 7912 | struct type *type2 = value_type (val); |
14f9c5c9 AS |
7913 | if (type == type2) |
7914 | return val; | |
7915 | ||
61ee279c PH |
7916 | type2 = ada_check_typedef (type2); |
7917 | type = ada_check_typedef (type); | |
14f9c5c9 | 7918 | |
d2e4a39e AS |
7919 | if (TYPE_CODE (type2) == TYPE_CODE_PTR |
7920 | && TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
14f9c5c9 AS |
7921 | { |
7922 | val = ada_value_ind (val); | |
df407dfe | 7923 | type2 = value_type (val); |
14f9c5c9 AS |
7924 | } |
7925 | ||
d2e4a39e | 7926 | if (TYPE_CODE (type2) == TYPE_CODE_ARRAY |
14f9c5c9 AS |
7927 | && TYPE_CODE (type) == TYPE_CODE_ARRAY) |
7928 | { | |
7929 | if (TYPE_LENGTH (type2) != TYPE_LENGTH (type) | |
4c4b4cd2 PH |
7930 | || TYPE_LENGTH (TYPE_TARGET_TYPE (type2)) |
7931 | != TYPE_LENGTH (TYPE_TARGET_TYPE (type2))) | |
323e0a4a | 7932 | error (_("Incompatible types in assignment")); |
04624583 | 7933 | deprecated_set_value_type (val, type); |
14f9c5c9 | 7934 | } |
d2e4a39e | 7935 | return val; |
14f9c5c9 AS |
7936 | } |
7937 | ||
4c4b4cd2 PH |
7938 | static struct value * |
7939 | ada_value_binop (struct value *arg1, struct value *arg2, enum exp_opcode op) | |
7940 | { | |
7941 | struct value *val; | |
7942 | struct type *type1, *type2; | |
7943 | LONGEST v, v1, v2; | |
7944 | ||
994b9211 AC |
7945 | arg1 = coerce_ref (arg1); |
7946 | arg2 = coerce_ref (arg2); | |
df407dfe AC |
7947 | type1 = base_type (ada_check_typedef (value_type (arg1))); |
7948 | type2 = base_type (ada_check_typedef (value_type (arg2))); | |
4c4b4cd2 | 7949 | |
76a01679 JB |
7950 | if (TYPE_CODE (type1) != TYPE_CODE_INT |
7951 | || TYPE_CODE (type2) != TYPE_CODE_INT) | |
4c4b4cd2 PH |
7952 | return value_binop (arg1, arg2, op); |
7953 | ||
76a01679 | 7954 | switch (op) |
4c4b4cd2 PH |
7955 | { |
7956 | case BINOP_MOD: | |
7957 | case BINOP_DIV: | |
7958 | case BINOP_REM: | |
7959 | break; | |
7960 | default: | |
7961 | return value_binop (arg1, arg2, op); | |
7962 | } | |
7963 | ||
7964 | v2 = value_as_long (arg2); | |
7965 | if (v2 == 0) | |
323e0a4a | 7966 | error (_("second operand of %s must not be zero."), op_string (op)); |
4c4b4cd2 PH |
7967 | |
7968 | if (TYPE_UNSIGNED (type1) || op == BINOP_MOD) | |
7969 | return value_binop (arg1, arg2, op); | |
7970 | ||
7971 | v1 = value_as_long (arg1); | |
7972 | switch (op) | |
7973 | { | |
7974 | case BINOP_DIV: | |
7975 | v = v1 / v2; | |
76a01679 JB |
7976 | if (!TRUNCATION_TOWARDS_ZERO && v1 * (v1 % v2) < 0) |
7977 | v += v > 0 ? -1 : 1; | |
4c4b4cd2 PH |
7978 | break; |
7979 | case BINOP_REM: | |
7980 | v = v1 % v2; | |
76a01679 JB |
7981 | if (v * v1 < 0) |
7982 | v -= v2; | |
4c4b4cd2 PH |
7983 | break; |
7984 | default: | |
7985 | /* Should not reach this point. */ | |
7986 | v = 0; | |
7987 | } | |
7988 | ||
7989 | val = allocate_value (type1); | |
990a07ab | 7990 | store_unsigned_integer (value_contents_raw (val), |
df407dfe | 7991 | TYPE_LENGTH (value_type (val)), v); |
4c4b4cd2 PH |
7992 | return val; |
7993 | } | |
7994 | ||
7995 | static int | |
7996 | ada_value_equal (struct value *arg1, struct value *arg2) | |
7997 | { | |
df407dfe AC |
7998 | if (ada_is_direct_array_type (value_type (arg1)) |
7999 | || ada_is_direct_array_type (value_type (arg2))) | |
4c4b4cd2 | 8000 | { |
f58b38bf JB |
8001 | /* Automatically dereference any array reference before |
8002 | we attempt to perform the comparison. */ | |
8003 | arg1 = ada_coerce_ref (arg1); | |
8004 | arg2 = ada_coerce_ref (arg2); | |
8005 | ||
4c4b4cd2 PH |
8006 | arg1 = ada_coerce_to_simple_array (arg1); |
8007 | arg2 = ada_coerce_to_simple_array (arg2); | |
df407dfe AC |
8008 | if (TYPE_CODE (value_type (arg1)) != TYPE_CODE_ARRAY |
8009 | || TYPE_CODE (value_type (arg2)) != TYPE_CODE_ARRAY) | |
323e0a4a | 8010 | error (_("Attempt to compare array with non-array")); |
4c4b4cd2 | 8011 | /* FIXME: The following works only for types whose |
76a01679 JB |
8012 | representations use all bits (no padding or undefined bits) |
8013 | and do not have user-defined equality. */ | |
8014 | return | |
df407dfe | 8015 | TYPE_LENGTH (value_type (arg1)) == TYPE_LENGTH (value_type (arg2)) |
0fd88904 | 8016 | && memcmp (value_contents (arg1), value_contents (arg2), |
df407dfe | 8017 | TYPE_LENGTH (value_type (arg1))) == 0; |
4c4b4cd2 PH |
8018 | } |
8019 | return value_equal (arg1, arg2); | |
8020 | } | |
8021 | ||
52ce6436 PH |
8022 | /* Total number of component associations in the aggregate starting at |
8023 | index PC in EXP. Assumes that index PC is the start of an | |
8024 | OP_AGGREGATE. */ | |
8025 | ||
8026 | static int | |
8027 | num_component_specs (struct expression *exp, int pc) | |
8028 | { | |
8029 | int n, m, i; | |
8030 | m = exp->elts[pc + 1].longconst; | |
8031 | pc += 3; | |
8032 | n = 0; | |
8033 | for (i = 0; i < m; i += 1) | |
8034 | { | |
8035 | switch (exp->elts[pc].opcode) | |
8036 | { | |
8037 | default: | |
8038 | n += 1; | |
8039 | break; | |
8040 | case OP_CHOICES: | |
8041 | n += exp->elts[pc + 1].longconst; | |
8042 | break; | |
8043 | } | |
8044 | ada_evaluate_subexp (NULL, exp, &pc, EVAL_SKIP); | |
8045 | } | |
8046 | return n; | |
8047 | } | |
8048 | ||
8049 | /* Assign the result of evaluating EXP starting at *POS to the INDEXth | |
8050 | component of LHS (a simple array or a record), updating *POS past | |
8051 | the expression, assuming that LHS is contained in CONTAINER. Does | |
8052 | not modify the inferior's memory, nor does it modify LHS (unless | |
8053 | LHS == CONTAINER). */ | |
8054 | ||
8055 | static void | |
8056 | assign_component (struct value *container, struct value *lhs, LONGEST index, | |
8057 | struct expression *exp, int *pos) | |
8058 | { | |
8059 | struct value *mark = value_mark (); | |
8060 | struct value *elt; | |
8061 | if (TYPE_CODE (value_type (lhs)) == TYPE_CODE_ARRAY) | |
8062 | { | |
6d84d3d8 | 8063 | struct value *index_val = value_from_longest (builtin_type_int32, index); |
52ce6436 PH |
8064 | elt = unwrap_value (ada_value_subscript (lhs, 1, &index_val)); |
8065 | } | |
8066 | else | |
8067 | { | |
8068 | elt = ada_index_struct_field (index, lhs, 0, value_type (lhs)); | |
8069 | elt = ada_to_fixed_value (unwrap_value (elt)); | |
8070 | } | |
8071 | ||
8072 | if (exp->elts[*pos].opcode == OP_AGGREGATE) | |
8073 | assign_aggregate (container, elt, exp, pos, EVAL_NORMAL); | |
8074 | else | |
8075 | value_assign_to_component (container, elt, | |
8076 | ada_evaluate_subexp (NULL, exp, pos, | |
8077 | EVAL_NORMAL)); | |
8078 | ||
8079 | value_free_to_mark (mark); | |
8080 | } | |
8081 | ||
8082 | /* Assuming that LHS represents an lvalue having a record or array | |
8083 | type, and EXP->ELTS[*POS] is an OP_AGGREGATE, evaluate an assignment | |
8084 | of that aggregate's value to LHS, advancing *POS past the | |
8085 | aggregate. NOSIDE is as for evaluate_subexp. CONTAINER is an | |
8086 | lvalue containing LHS (possibly LHS itself). Does not modify | |
8087 | the inferior's memory, nor does it modify the contents of | |
8088 | LHS (unless == CONTAINER). Returns the modified CONTAINER. */ | |
8089 | ||
8090 | static struct value * | |
8091 | assign_aggregate (struct value *container, | |
8092 | struct value *lhs, struct expression *exp, | |
8093 | int *pos, enum noside noside) | |
8094 | { | |
8095 | struct type *lhs_type; | |
8096 | int n = exp->elts[*pos+1].longconst; | |
8097 | LONGEST low_index, high_index; | |
8098 | int num_specs; | |
8099 | LONGEST *indices; | |
8100 | int max_indices, num_indices; | |
8101 | int is_array_aggregate; | |
8102 | int i; | |
8103 | struct value *mark = value_mark (); | |
8104 | ||
8105 | *pos += 3; | |
8106 | if (noside != EVAL_NORMAL) | |
8107 | { | |
8108 | int i; | |
8109 | for (i = 0; i < n; i += 1) | |
8110 | ada_evaluate_subexp (NULL, exp, pos, noside); | |
8111 | return container; | |
8112 | } | |
8113 | ||
8114 | container = ada_coerce_ref (container); | |
8115 | if (ada_is_direct_array_type (value_type (container))) | |
8116 | container = ada_coerce_to_simple_array (container); | |
8117 | lhs = ada_coerce_ref (lhs); | |
8118 | if (!deprecated_value_modifiable (lhs)) | |
8119 | error (_("Left operand of assignment is not a modifiable lvalue.")); | |
8120 | ||
8121 | lhs_type = value_type (lhs); | |
8122 | if (ada_is_direct_array_type (lhs_type)) | |
8123 | { | |
8124 | lhs = ada_coerce_to_simple_array (lhs); | |
8125 | lhs_type = value_type (lhs); | |
8126 | low_index = TYPE_ARRAY_LOWER_BOUND_VALUE (lhs_type); | |
8127 | high_index = TYPE_ARRAY_UPPER_BOUND_VALUE (lhs_type); | |
8128 | is_array_aggregate = 1; | |
8129 | } | |
8130 | else if (TYPE_CODE (lhs_type) == TYPE_CODE_STRUCT) | |
8131 | { | |
8132 | low_index = 0; | |
8133 | high_index = num_visible_fields (lhs_type) - 1; | |
8134 | is_array_aggregate = 0; | |
8135 | } | |
8136 | else | |
8137 | error (_("Left-hand side must be array or record.")); | |
8138 | ||
8139 | num_specs = num_component_specs (exp, *pos - 3); | |
8140 | max_indices = 4 * num_specs + 4; | |
8141 | indices = alloca (max_indices * sizeof (indices[0])); | |
8142 | indices[0] = indices[1] = low_index - 1; | |
8143 | indices[2] = indices[3] = high_index + 1; | |
8144 | num_indices = 4; | |
8145 | ||
8146 | for (i = 0; i < n; i += 1) | |
8147 | { | |
8148 | switch (exp->elts[*pos].opcode) | |
8149 | { | |
8150 | case OP_CHOICES: | |
8151 | aggregate_assign_from_choices (container, lhs, exp, pos, indices, | |
8152 | &num_indices, max_indices, | |
8153 | low_index, high_index); | |
8154 | break; | |
8155 | case OP_POSITIONAL: | |
8156 | aggregate_assign_positional (container, lhs, exp, pos, indices, | |
8157 | &num_indices, max_indices, | |
8158 | low_index, high_index); | |
8159 | break; | |
8160 | case OP_OTHERS: | |
8161 | if (i != n-1) | |
8162 | error (_("Misplaced 'others' clause")); | |
8163 | aggregate_assign_others (container, lhs, exp, pos, indices, | |
8164 | num_indices, low_index, high_index); | |
8165 | break; | |
8166 | default: | |
8167 | error (_("Internal error: bad aggregate clause")); | |
8168 | } | |
8169 | } | |
8170 | ||
8171 | return container; | |
8172 | } | |
8173 | ||
8174 | /* Assign into the component of LHS indexed by the OP_POSITIONAL | |
8175 | construct at *POS, updating *POS past the construct, given that | |
8176 | the positions are relative to lower bound LOW, where HIGH is the | |
8177 | upper bound. Record the position in INDICES[0 .. MAX_INDICES-1] | |
8178 | updating *NUM_INDICES as needed. CONTAINER is as for | |
8179 | assign_aggregate. */ | |
8180 | static void | |
8181 | aggregate_assign_positional (struct value *container, | |
8182 | struct value *lhs, struct expression *exp, | |
8183 | int *pos, LONGEST *indices, int *num_indices, | |
8184 | int max_indices, LONGEST low, LONGEST high) | |
8185 | { | |
8186 | LONGEST ind = longest_to_int (exp->elts[*pos + 1].longconst) + low; | |
8187 | ||
8188 | if (ind - 1 == high) | |
e1d5a0d2 | 8189 | warning (_("Extra components in aggregate ignored.")); |
52ce6436 PH |
8190 | if (ind <= high) |
8191 | { | |
8192 | add_component_interval (ind, ind, indices, num_indices, max_indices); | |
8193 | *pos += 3; | |
8194 | assign_component (container, lhs, ind, exp, pos); | |
8195 | } | |
8196 | else | |
8197 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
8198 | } | |
8199 | ||
8200 | /* Assign into the components of LHS indexed by the OP_CHOICES | |
8201 | construct at *POS, updating *POS past the construct, given that | |
8202 | the allowable indices are LOW..HIGH. Record the indices assigned | |
8203 | to in INDICES[0 .. MAX_INDICES-1], updating *NUM_INDICES as | |
8204 | needed. CONTAINER is as for assign_aggregate. */ | |
8205 | static void | |
8206 | aggregate_assign_from_choices (struct value *container, | |
8207 | struct value *lhs, struct expression *exp, | |
8208 | int *pos, LONGEST *indices, int *num_indices, | |
8209 | int max_indices, LONGEST low, LONGEST high) | |
8210 | { | |
8211 | int j; | |
8212 | int n_choices = longest_to_int (exp->elts[*pos+1].longconst); | |
8213 | int choice_pos, expr_pc; | |
8214 | int is_array = ada_is_direct_array_type (value_type (lhs)); | |
8215 | ||
8216 | choice_pos = *pos += 3; | |
8217 | ||
8218 | for (j = 0; j < n_choices; j += 1) | |
8219 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
8220 | expr_pc = *pos; | |
8221 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
8222 | ||
8223 | for (j = 0; j < n_choices; j += 1) | |
8224 | { | |
8225 | LONGEST lower, upper; | |
8226 | enum exp_opcode op = exp->elts[choice_pos].opcode; | |
8227 | if (op == OP_DISCRETE_RANGE) | |
8228 | { | |
8229 | choice_pos += 1; | |
8230 | lower = value_as_long (ada_evaluate_subexp (NULL, exp, pos, | |
8231 | EVAL_NORMAL)); | |
8232 | upper = value_as_long (ada_evaluate_subexp (NULL, exp, pos, | |
8233 | EVAL_NORMAL)); | |
8234 | } | |
8235 | else if (is_array) | |
8236 | { | |
8237 | lower = value_as_long (ada_evaluate_subexp (NULL, exp, &choice_pos, | |
8238 | EVAL_NORMAL)); | |
8239 | upper = lower; | |
8240 | } | |
8241 | else | |
8242 | { | |
8243 | int ind; | |
8244 | char *name; | |
8245 | switch (op) | |
8246 | { | |
8247 | case OP_NAME: | |
8248 | name = &exp->elts[choice_pos + 2].string; | |
8249 | break; | |
8250 | case OP_VAR_VALUE: | |
8251 | name = SYMBOL_NATURAL_NAME (exp->elts[choice_pos + 2].symbol); | |
8252 | break; | |
8253 | default: | |
8254 | error (_("Invalid record component association.")); | |
8255 | } | |
8256 | ada_evaluate_subexp (NULL, exp, &choice_pos, EVAL_SKIP); | |
8257 | ind = 0; | |
8258 | if (! find_struct_field (name, value_type (lhs), 0, | |
8259 | NULL, NULL, NULL, NULL, &ind)) | |
8260 | error (_("Unknown component name: %s."), name); | |
8261 | lower = upper = ind; | |
8262 | } | |
8263 | ||
8264 | if (lower <= upper && (lower < low || upper > high)) | |
8265 | error (_("Index in component association out of bounds.")); | |
8266 | ||
8267 | add_component_interval (lower, upper, indices, num_indices, | |
8268 | max_indices); | |
8269 | while (lower <= upper) | |
8270 | { | |
8271 | int pos1; | |
8272 | pos1 = expr_pc; | |
8273 | assign_component (container, lhs, lower, exp, &pos1); | |
8274 | lower += 1; | |
8275 | } | |
8276 | } | |
8277 | } | |
8278 | ||
8279 | /* Assign the value of the expression in the OP_OTHERS construct in | |
8280 | EXP at *POS into the components of LHS indexed from LOW .. HIGH that | |
8281 | have not been previously assigned. The index intervals already assigned | |
8282 | are in INDICES[0 .. NUM_INDICES-1]. Updates *POS to after the | |
8283 | OP_OTHERS clause. CONTAINER is as for assign_aggregate*/ | |
8284 | static void | |
8285 | aggregate_assign_others (struct value *container, | |
8286 | struct value *lhs, struct expression *exp, | |
8287 | int *pos, LONGEST *indices, int num_indices, | |
8288 | LONGEST low, LONGEST high) | |
8289 | { | |
8290 | int i; | |
8291 | int expr_pc = *pos+1; | |
8292 | ||
8293 | for (i = 0; i < num_indices - 2; i += 2) | |
8294 | { | |
8295 | LONGEST ind; | |
8296 | for (ind = indices[i + 1] + 1; ind < indices[i + 2]; ind += 1) | |
8297 | { | |
8298 | int pos; | |
8299 | pos = expr_pc; | |
8300 | assign_component (container, lhs, ind, exp, &pos); | |
8301 | } | |
8302 | } | |
8303 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
8304 | } | |
8305 | ||
8306 | /* Add the interval [LOW .. HIGH] to the sorted set of intervals | |
8307 | [ INDICES[0] .. INDICES[1] ],..., [ INDICES[*SIZE-2] .. INDICES[*SIZE-1] ], | |
8308 | modifying *SIZE as needed. It is an error if *SIZE exceeds | |
8309 | MAX_SIZE. The resulting intervals do not overlap. */ | |
8310 | static void | |
8311 | add_component_interval (LONGEST low, LONGEST high, | |
8312 | LONGEST* indices, int *size, int max_size) | |
8313 | { | |
8314 | int i, j; | |
8315 | for (i = 0; i < *size; i += 2) { | |
8316 | if (high >= indices[i] && low <= indices[i + 1]) | |
8317 | { | |
8318 | int kh; | |
8319 | for (kh = i + 2; kh < *size; kh += 2) | |
8320 | if (high < indices[kh]) | |
8321 | break; | |
8322 | if (low < indices[i]) | |
8323 | indices[i] = low; | |
8324 | indices[i + 1] = indices[kh - 1]; | |
8325 | if (high > indices[i + 1]) | |
8326 | indices[i + 1] = high; | |
8327 | memcpy (indices + i + 2, indices + kh, *size - kh); | |
8328 | *size -= kh - i - 2; | |
8329 | return; | |
8330 | } | |
8331 | else if (high < indices[i]) | |
8332 | break; | |
8333 | } | |
8334 | ||
8335 | if (*size == max_size) | |
8336 | error (_("Internal error: miscounted aggregate components.")); | |
8337 | *size += 2; | |
8338 | for (j = *size-1; j >= i+2; j -= 1) | |
8339 | indices[j] = indices[j - 2]; | |
8340 | indices[i] = low; | |
8341 | indices[i + 1] = high; | |
8342 | } | |
8343 | ||
6e48bd2c JB |
8344 | /* Perform and Ada cast of ARG2 to type TYPE if the type of ARG2 |
8345 | is different. */ | |
8346 | ||
8347 | static struct value * | |
8348 | ada_value_cast (struct type *type, struct value *arg2, enum noside noside) | |
8349 | { | |
8350 | if (type == ada_check_typedef (value_type (arg2))) | |
8351 | return arg2; | |
8352 | ||
8353 | if (ada_is_fixed_point_type (type)) | |
8354 | return (cast_to_fixed (type, arg2)); | |
8355 | ||
8356 | if (ada_is_fixed_point_type (value_type (arg2))) | |
a53b7a21 | 8357 | return cast_from_fixed (type, arg2); |
6e48bd2c JB |
8358 | |
8359 | return value_cast (type, arg2); | |
8360 | } | |
8361 | ||
52ce6436 | 8362 | static struct value * |
ebf56fd3 | 8363 | ada_evaluate_subexp (struct type *expect_type, struct expression *exp, |
4c4b4cd2 | 8364 | int *pos, enum noside noside) |
14f9c5c9 AS |
8365 | { |
8366 | enum exp_opcode op; | |
14f9c5c9 AS |
8367 | int tem, tem2, tem3; |
8368 | int pc; | |
8369 | struct value *arg1 = NULL, *arg2 = NULL, *arg3; | |
8370 | struct type *type; | |
52ce6436 | 8371 | int nargs, oplen; |
d2e4a39e | 8372 | struct value **argvec; |
14f9c5c9 | 8373 | |
d2e4a39e AS |
8374 | pc = *pos; |
8375 | *pos += 1; | |
14f9c5c9 AS |
8376 | op = exp->elts[pc].opcode; |
8377 | ||
d2e4a39e | 8378 | switch (op) |
14f9c5c9 AS |
8379 | { |
8380 | default: | |
8381 | *pos -= 1; | |
6e48bd2c JB |
8382 | arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside); |
8383 | arg1 = unwrap_value (arg1); | |
8384 | ||
8385 | /* If evaluating an OP_DOUBLE and an EXPECT_TYPE was provided, | |
8386 | then we need to perform the conversion manually, because | |
8387 | evaluate_subexp_standard doesn't do it. This conversion is | |
8388 | necessary in Ada because the different kinds of float/fixed | |
8389 | types in Ada have different representations. | |
8390 | ||
8391 | Similarly, we need to perform the conversion from OP_LONG | |
8392 | ourselves. */ | |
8393 | if ((op == OP_DOUBLE || op == OP_LONG) && expect_type != NULL) | |
8394 | arg1 = ada_value_cast (expect_type, arg1, noside); | |
8395 | ||
8396 | return arg1; | |
4c4b4cd2 PH |
8397 | |
8398 | case OP_STRING: | |
8399 | { | |
76a01679 JB |
8400 | struct value *result; |
8401 | *pos -= 1; | |
8402 | result = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
8403 | /* The result type will have code OP_STRING, bashed there from | |
8404 | OP_ARRAY. Bash it back. */ | |
df407dfe AC |
8405 | if (TYPE_CODE (value_type (result)) == TYPE_CODE_STRING) |
8406 | TYPE_CODE (value_type (result)) = TYPE_CODE_ARRAY; | |
76a01679 | 8407 | return result; |
4c4b4cd2 | 8408 | } |
14f9c5c9 AS |
8409 | |
8410 | case UNOP_CAST: | |
8411 | (*pos) += 2; | |
8412 | type = exp->elts[pc + 1].type; | |
8413 | arg1 = evaluate_subexp (type, exp, pos, noside); | |
8414 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 8415 | goto nosideret; |
6e48bd2c | 8416 | arg1 = ada_value_cast (type, arg1, noside); |
14f9c5c9 AS |
8417 | return arg1; |
8418 | ||
4c4b4cd2 PH |
8419 | case UNOP_QUAL: |
8420 | (*pos) += 2; | |
8421 | type = exp->elts[pc + 1].type; | |
8422 | return ada_evaluate_subexp (type, exp, pos, noside); | |
8423 | ||
14f9c5c9 AS |
8424 | case BINOP_ASSIGN: |
8425 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
52ce6436 PH |
8426 | if (exp->elts[*pos].opcode == OP_AGGREGATE) |
8427 | { | |
8428 | arg1 = assign_aggregate (arg1, arg1, exp, pos, noside); | |
8429 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) | |
8430 | return arg1; | |
8431 | return ada_value_assign (arg1, arg1); | |
8432 | } | |
003f3813 JB |
8433 | /* Force the evaluation of the rhs ARG2 to the type of the lhs ARG1, |
8434 | except if the lhs of our assignment is a convenience variable. | |
8435 | In the case of assigning to a convenience variable, the lhs | |
8436 | should be exactly the result of the evaluation of the rhs. */ | |
8437 | type = value_type (arg1); | |
8438 | if (VALUE_LVAL (arg1) == lval_internalvar) | |
8439 | type = NULL; | |
8440 | arg2 = evaluate_subexp (type, exp, pos, noside); | |
14f9c5c9 | 8441 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 | 8442 | return arg1; |
df407dfe AC |
8443 | if (ada_is_fixed_point_type (value_type (arg1))) |
8444 | arg2 = cast_to_fixed (value_type (arg1), arg2); | |
8445 | else if (ada_is_fixed_point_type (value_type (arg2))) | |
76a01679 | 8446 | error |
323e0a4a | 8447 | (_("Fixed-point values must be assigned to fixed-point variables")); |
d2e4a39e | 8448 | else |
df407dfe | 8449 | arg2 = coerce_for_assign (value_type (arg1), arg2); |
4c4b4cd2 | 8450 | return ada_value_assign (arg1, arg2); |
14f9c5c9 AS |
8451 | |
8452 | case BINOP_ADD: | |
8453 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
8454 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
8455 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 8456 | goto nosideret; |
2ac8a782 JB |
8457 | if (TYPE_CODE (value_type (arg1)) == TYPE_CODE_PTR) |
8458 | return (value_from_longest | |
8459 | (value_type (arg1), | |
8460 | value_as_long (arg1) + value_as_long (arg2))); | |
df407dfe AC |
8461 | if ((ada_is_fixed_point_type (value_type (arg1)) |
8462 | || ada_is_fixed_point_type (value_type (arg2))) | |
8463 | && value_type (arg1) != value_type (arg2)) | |
323e0a4a | 8464 | error (_("Operands of fixed-point addition must have the same type")); |
b7789565 JB |
8465 | /* Do the addition, and cast the result to the type of the first |
8466 | argument. We cannot cast the result to a reference type, so if | |
8467 | ARG1 is a reference type, find its underlying type. */ | |
8468 | type = value_type (arg1); | |
8469 | while (TYPE_CODE (type) == TYPE_CODE_REF) | |
8470 | type = TYPE_TARGET_TYPE (type); | |
f44316fa | 8471 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
89eef114 | 8472 | return value_cast (type, value_binop (arg1, arg2, BINOP_ADD)); |
14f9c5c9 AS |
8473 | |
8474 | case BINOP_SUB: | |
8475 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
8476 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
8477 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 8478 | goto nosideret; |
2ac8a782 JB |
8479 | if (TYPE_CODE (value_type (arg1)) == TYPE_CODE_PTR) |
8480 | return (value_from_longest | |
8481 | (value_type (arg1), | |
8482 | value_as_long (arg1) - value_as_long (arg2))); | |
df407dfe AC |
8483 | if ((ada_is_fixed_point_type (value_type (arg1)) |
8484 | || ada_is_fixed_point_type (value_type (arg2))) | |
8485 | && value_type (arg1) != value_type (arg2)) | |
323e0a4a | 8486 | error (_("Operands of fixed-point subtraction must have the same type")); |
b7789565 JB |
8487 | /* Do the substraction, and cast the result to the type of the first |
8488 | argument. We cannot cast the result to a reference type, so if | |
8489 | ARG1 is a reference type, find its underlying type. */ | |
8490 | type = value_type (arg1); | |
8491 | while (TYPE_CODE (type) == TYPE_CODE_REF) | |
8492 | type = TYPE_TARGET_TYPE (type); | |
f44316fa | 8493 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
89eef114 | 8494 | return value_cast (type, value_binop (arg1, arg2, BINOP_SUB)); |
14f9c5c9 AS |
8495 | |
8496 | case BINOP_MUL: | |
8497 | case BINOP_DIV: | |
8498 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8499 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8500 | if (noside == EVAL_SKIP) | |
4c4b4cd2 PH |
8501 | goto nosideret; |
8502 | else if (noside == EVAL_AVOID_SIDE_EFFECTS | |
76a01679 | 8503 | && (op == BINOP_DIV || op == BINOP_REM || op == BINOP_MOD)) |
df407dfe | 8504 | return value_zero (value_type (arg1), not_lval); |
14f9c5c9 | 8505 | else |
4c4b4cd2 | 8506 | { |
a53b7a21 | 8507 | type = builtin_type (exp->gdbarch)->builtin_double; |
df407dfe | 8508 | if (ada_is_fixed_point_type (value_type (arg1))) |
a53b7a21 | 8509 | arg1 = cast_from_fixed (type, arg1); |
df407dfe | 8510 | if (ada_is_fixed_point_type (value_type (arg2))) |
a53b7a21 | 8511 | arg2 = cast_from_fixed (type, arg2); |
f44316fa | 8512 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
4c4b4cd2 PH |
8513 | return ada_value_binop (arg1, arg2, op); |
8514 | } | |
8515 | ||
8516 | case BINOP_REM: | |
8517 | case BINOP_MOD: | |
8518 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8519 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8520 | if (noside == EVAL_SKIP) | |
76a01679 | 8521 | goto nosideret; |
4c4b4cd2 | 8522 | else if (noside == EVAL_AVOID_SIDE_EFFECTS |
76a01679 | 8523 | && (op == BINOP_DIV || op == BINOP_REM || op == BINOP_MOD)) |
df407dfe | 8524 | return value_zero (value_type (arg1), not_lval); |
14f9c5c9 | 8525 | else |
f44316fa UW |
8526 | { |
8527 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
8528 | return ada_value_binop (arg1, arg2, op); | |
8529 | } | |
14f9c5c9 | 8530 | |
4c4b4cd2 PH |
8531 | case BINOP_EQUAL: |
8532 | case BINOP_NOTEQUAL: | |
14f9c5c9 | 8533 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
df407dfe | 8534 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
14f9c5c9 | 8535 | if (noside == EVAL_SKIP) |
76a01679 | 8536 | goto nosideret; |
4c4b4cd2 | 8537 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 8538 | tem = 0; |
4c4b4cd2 | 8539 | else |
f44316fa UW |
8540 | { |
8541 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
8542 | tem = ada_value_equal (arg1, arg2); | |
8543 | } | |
4c4b4cd2 | 8544 | if (op == BINOP_NOTEQUAL) |
76a01679 | 8545 | tem = !tem; |
fbb06eb1 UW |
8546 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
8547 | return value_from_longest (type, (LONGEST) tem); | |
4c4b4cd2 PH |
8548 | |
8549 | case UNOP_NEG: | |
8550 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8551 | if (noside == EVAL_SKIP) | |
8552 | goto nosideret; | |
df407dfe AC |
8553 | else if (ada_is_fixed_point_type (value_type (arg1))) |
8554 | return value_cast (value_type (arg1), value_neg (arg1)); | |
14f9c5c9 | 8555 | else |
f44316fa UW |
8556 | { |
8557 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); | |
8558 | return value_neg (arg1); | |
8559 | } | |
4c4b4cd2 | 8560 | |
2330c6c6 JB |
8561 | case BINOP_LOGICAL_AND: |
8562 | case BINOP_LOGICAL_OR: | |
8563 | case UNOP_LOGICAL_NOT: | |
000d5124 JB |
8564 | { |
8565 | struct value *val; | |
8566 | ||
8567 | *pos -= 1; | |
8568 | val = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
fbb06eb1 UW |
8569 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
8570 | return value_cast (type, val); | |
000d5124 | 8571 | } |
2330c6c6 JB |
8572 | |
8573 | case BINOP_BITWISE_AND: | |
8574 | case BINOP_BITWISE_IOR: | |
8575 | case BINOP_BITWISE_XOR: | |
000d5124 JB |
8576 | { |
8577 | struct value *val; | |
8578 | ||
8579 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); | |
8580 | *pos = pc; | |
8581 | val = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
8582 | ||
8583 | return value_cast (value_type (arg1), val); | |
8584 | } | |
2330c6c6 | 8585 | |
14f9c5c9 AS |
8586 | case OP_VAR_VALUE: |
8587 | *pos -= 1; | |
6799def4 | 8588 | |
14f9c5c9 | 8589 | if (noside == EVAL_SKIP) |
4c4b4cd2 PH |
8590 | { |
8591 | *pos += 4; | |
8592 | goto nosideret; | |
8593 | } | |
8594 | else if (SYMBOL_DOMAIN (exp->elts[pc + 2].symbol) == UNDEF_DOMAIN) | |
76a01679 JB |
8595 | /* Only encountered when an unresolved symbol occurs in a |
8596 | context other than a function call, in which case, it is | |
52ce6436 | 8597 | invalid. */ |
323e0a4a | 8598 | error (_("Unexpected unresolved symbol, %s, during evaluation"), |
4c4b4cd2 | 8599 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
14f9c5c9 | 8600 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 | 8601 | { |
0c1f74cf JB |
8602 | type = static_unwrap_type (SYMBOL_TYPE (exp->elts[pc + 2].symbol)); |
8603 | if (ada_is_tagged_type (type, 0)) | |
8604 | { | |
8605 | /* Tagged types are a little special in the fact that the real | |
8606 | type is dynamic and can only be determined by inspecting the | |
8607 | object's tag. This means that we need to get the object's | |
8608 | value first (EVAL_NORMAL) and then extract the actual object | |
8609 | type from its tag. | |
8610 | ||
8611 | Note that we cannot skip the final step where we extract | |
8612 | the object type from its tag, because the EVAL_NORMAL phase | |
8613 | results in dynamic components being resolved into fixed ones. | |
8614 | This can cause problems when trying to print the type | |
8615 | description of tagged types whose parent has a dynamic size: | |
8616 | We use the type name of the "_parent" component in order | |
8617 | to print the name of the ancestor type in the type description. | |
8618 | If that component had a dynamic size, the resolution into | |
8619 | a fixed type would result in the loss of that type name, | |
8620 | thus preventing us from printing the name of the ancestor | |
8621 | type in the type description. */ | |
8622 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_NORMAL); | |
8623 | return value_zero (type_from_tag (ada_value_tag (arg1)), not_lval); | |
8624 | } | |
8625 | ||
4c4b4cd2 PH |
8626 | *pos += 4; |
8627 | return value_zero | |
8628 | (to_static_fixed_type | |
8629 | (static_unwrap_type (SYMBOL_TYPE (exp->elts[pc + 2].symbol))), | |
8630 | not_lval); | |
8631 | } | |
d2e4a39e | 8632 | else |
4c4b4cd2 PH |
8633 | { |
8634 | arg1 = | |
8635 | unwrap_value (evaluate_subexp_standard | |
8636 | (expect_type, exp, pos, noside)); | |
8637 | return ada_to_fixed_value (arg1); | |
8638 | } | |
8639 | ||
8640 | case OP_FUNCALL: | |
8641 | (*pos) += 2; | |
8642 | ||
8643 | /* Allocate arg vector, including space for the function to be | |
8644 | called in argvec[0] and a terminating NULL. */ | |
8645 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
8646 | argvec = | |
8647 | (struct value **) alloca (sizeof (struct value *) * (nargs + 2)); | |
8648 | ||
8649 | if (exp->elts[*pos].opcode == OP_VAR_VALUE | |
76a01679 | 8650 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
323e0a4a | 8651 | error (_("Unexpected unresolved symbol, %s, during evaluation"), |
4c4b4cd2 PH |
8652 | SYMBOL_PRINT_NAME (exp->elts[pc + 5].symbol)); |
8653 | else | |
8654 | { | |
8655 | for (tem = 0; tem <= nargs; tem += 1) | |
8656 | argvec[tem] = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8657 | argvec[tem] = 0; | |
8658 | ||
8659 | if (noside == EVAL_SKIP) | |
8660 | goto nosideret; | |
8661 | } | |
8662 | ||
df407dfe | 8663 | if (ada_is_packed_array_type (desc_base_type (value_type (argvec[0])))) |
4c4b4cd2 | 8664 | argvec[0] = ada_coerce_to_simple_array (argvec[0]); |
df407dfe AC |
8665 | else if (TYPE_CODE (value_type (argvec[0])) == TYPE_CODE_REF |
8666 | || (TYPE_CODE (value_type (argvec[0])) == TYPE_CODE_ARRAY | |
76a01679 | 8667 | && VALUE_LVAL (argvec[0]) == lval_memory)) |
4c4b4cd2 PH |
8668 | argvec[0] = value_addr (argvec[0]); |
8669 | ||
df407dfe | 8670 | type = ada_check_typedef (value_type (argvec[0])); |
4c4b4cd2 PH |
8671 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
8672 | { | |
61ee279c | 8673 | switch (TYPE_CODE (ada_check_typedef (TYPE_TARGET_TYPE (type)))) |
4c4b4cd2 PH |
8674 | { |
8675 | case TYPE_CODE_FUNC: | |
61ee279c | 8676 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
4c4b4cd2 PH |
8677 | break; |
8678 | case TYPE_CODE_ARRAY: | |
8679 | break; | |
8680 | case TYPE_CODE_STRUCT: | |
8681 | if (noside != EVAL_AVOID_SIDE_EFFECTS) | |
8682 | argvec[0] = ada_value_ind (argvec[0]); | |
61ee279c | 8683 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
4c4b4cd2 PH |
8684 | break; |
8685 | default: | |
323e0a4a | 8686 | error (_("cannot subscript or call something of type `%s'"), |
df407dfe | 8687 | ada_type_name (value_type (argvec[0]))); |
4c4b4cd2 PH |
8688 | break; |
8689 | } | |
8690 | } | |
8691 | ||
8692 | switch (TYPE_CODE (type)) | |
8693 | { | |
8694 | case TYPE_CODE_FUNC: | |
8695 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8696 | return allocate_value (TYPE_TARGET_TYPE (type)); | |
8697 | return call_function_by_hand (argvec[0], nargs, argvec + 1); | |
8698 | case TYPE_CODE_STRUCT: | |
8699 | { | |
8700 | int arity; | |
8701 | ||
4c4b4cd2 PH |
8702 | arity = ada_array_arity (type); |
8703 | type = ada_array_element_type (type, nargs); | |
8704 | if (type == NULL) | |
323e0a4a | 8705 | error (_("cannot subscript or call a record")); |
4c4b4cd2 | 8706 | if (arity != nargs) |
323e0a4a | 8707 | error (_("wrong number of subscripts; expecting %d"), arity); |
4c4b4cd2 | 8708 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
0a07e705 | 8709 | return value_zero (ada_aligned_type (type), lval_memory); |
4c4b4cd2 PH |
8710 | return |
8711 | unwrap_value (ada_value_subscript | |
8712 | (argvec[0], nargs, argvec + 1)); | |
8713 | } | |
8714 | case TYPE_CODE_ARRAY: | |
8715 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8716 | { | |
8717 | type = ada_array_element_type (type, nargs); | |
8718 | if (type == NULL) | |
323e0a4a | 8719 | error (_("element type of array unknown")); |
4c4b4cd2 | 8720 | else |
0a07e705 | 8721 | return value_zero (ada_aligned_type (type), lval_memory); |
4c4b4cd2 PH |
8722 | } |
8723 | return | |
8724 | unwrap_value (ada_value_subscript | |
8725 | (ada_coerce_to_simple_array (argvec[0]), | |
8726 | nargs, argvec + 1)); | |
8727 | case TYPE_CODE_PTR: /* Pointer to array */ | |
8728 | type = to_fixed_array_type (TYPE_TARGET_TYPE (type), NULL, 1); | |
8729 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8730 | { | |
8731 | type = ada_array_element_type (type, nargs); | |
8732 | if (type == NULL) | |
323e0a4a | 8733 | error (_("element type of array unknown")); |
4c4b4cd2 | 8734 | else |
0a07e705 | 8735 | return value_zero (ada_aligned_type (type), lval_memory); |
4c4b4cd2 PH |
8736 | } |
8737 | return | |
8738 | unwrap_value (ada_value_ptr_subscript (argvec[0], type, | |
8739 | nargs, argvec + 1)); | |
8740 | ||
8741 | default: | |
e1d5a0d2 PH |
8742 | error (_("Attempt to index or call something other than an " |
8743 | "array or function")); | |
4c4b4cd2 PH |
8744 | } |
8745 | ||
8746 | case TERNOP_SLICE: | |
8747 | { | |
8748 | struct value *array = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8749 | struct value *low_bound_val = | |
8750 | evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
714e53ab PH |
8751 | struct value *high_bound_val = |
8752 | evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8753 | LONGEST low_bound; | |
8754 | LONGEST high_bound; | |
994b9211 AC |
8755 | low_bound_val = coerce_ref (low_bound_val); |
8756 | high_bound_val = coerce_ref (high_bound_val); | |
714e53ab PH |
8757 | low_bound = pos_atr (low_bound_val); |
8758 | high_bound = pos_atr (high_bound_val); | |
963a6417 | 8759 | |
4c4b4cd2 PH |
8760 | if (noside == EVAL_SKIP) |
8761 | goto nosideret; | |
8762 | ||
4c4b4cd2 PH |
8763 | /* If this is a reference to an aligner type, then remove all |
8764 | the aligners. */ | |
df407dfe AC |
8765 | if (TYPE_CODE (value_type (array)) == TYPE_CODE_REF |
8766 | && ada_is_aligner_type (TYPE_TARGET_TYPE (value_type (array)))) | |
8767 | TYPE_TARGET_TYPE (value_type (array)) = | |
8768 | ada_aligned_type (TYPE_TARGET_TYPE (value_type (array))); | |
4c4b4cd2 | 8769 | |
df407dfe | 8770 | if (ada_is_packed_array_type (value_type (array))) |
323e0a4a | 8771 | error (_("cannot slice a packed array")); |
4c4b4cd2 PH |
8772 | |
8773 | /* If this is a reference to an array or an array lvalue, | |
8774 | convert to a pointer. */ | |
df407dfe AC |
8775 | if (TYPE_CODE (value_type (array)) == TYPE_CODE_REF |
8776 | || (TYPE_CODE (value_type (array)) == TYPE_CODE_ARRAY | |
4c4b4cd2 PH |
8777 | && VALUE_LVAL (array) == lval_memory)) |
8778 | array = value_addr (array); | |
8779 | ||
1265e4aa | 8780 | if (noside == EVAL_AVOID_SIDE_EFFECTS |
61ee279c | 8781 | && ada_is_array_descriptor_type (ada_check_typedef |
df407dfe | 8782 | (value_type (array)))) |
0b5d8877 | 8783 | return empty_array (ada_type_of_array (array, 0), low_bound); |
4c4b4cd2 PH |
8784 | |
8785 | array = ada_coerce_to_simple_array_ptr (array); | |
8786 | ||
714e53ab PH |
8787 | /* If we have more than one level of pointer indirection, |
8788 | dereference the value until we get only one level. */ | |
df407dfe AC |
8789 | while (TYPE_CODE (value_type (array)) == TYPE_CODE_PTR |
8790 | && (TYPE_CODE (TYPE_TARGET_TYPE (value_type (array))) | |
714e53ab PH |
8791 | == TYPE_CODE_PTR)) |
8792 | array = value_ind (array); | |
8793 | ||
8794 | /* Make sure we really do have an array type before going further, | |
8795 | to avoid a SEGV when trying to get the index type or the target | |
8796 | type later down the road if the debug info generated by | |
8797 | the compiler is incorrect or incomplete. */ | |
df407dfe | 8798 | if (!ada_is_simple_array_type (value_type (array))) |
323e0a4a | 8799 | error (_("cannot take slice of non-array")); |
714e53ab | 8800 | |
df407dfe | 8801 | if (TYPE_CODE (value_type (array)) == TYPE_CODE_PTR) |
4c4b4cd2 | 8802 | { |
0b5d8877 | 8803 | if (high_bound < low_bound || noside == EVAL_AVOID_SIDE_EFFECTS) |
df407dfe | 8804 | return empty_array (TYPE_TARGET_TYPE (value_type (array)), |
4c4b4cd2 PH |
8805 | low_bound); |
8806 | else | |
8807 | { | |
8808 | struct type *arr_type0 = | |
df407dfe | 8809 | to_fixed_array_type (TYPE_TARGET_TYPE (value_type (array)), |
4c4b4cd2 | 8810 | NULL, 1); |
0b5d8877 | 8811 | return ada_value_slice_ptr (array, arr_type0, |
529cad9c PH |
8812 | longest_to_int (low_bound), |
8813 | longest_to_int (high_bound)); | |
4c4b4cd2 PH |
8814 | } |
8815 | } | |
8816 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8817 | return array; | |
8818 | else if (high_bound < low_bound) | |
df407dfe | 8819 | return empty_array (value_type (array), low_bound); |
4c4b4cd2 | 8820 | else |
529cad9c PH |
8821 | return ada_value_slice (array, longest_to_int (low_bound), |
8822 | longest_to_int (high_bound)); | |
4c4b4cd2 | 8823 | } |
14f9c5c9 | 8824 | |
4c4b4cd2 PH |
8825 | case UNOP_IN_RANGE: |
8826 | (*pos) += 2; | |
8827 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8828 | type = exp->elts[pc + 1].type; | |
14f9c5c9 | 8829 | |
14f9c5c9 | 8830 | if (noside == EVAL_SKIP) |
4c4b4cd2 | 8831 | goto nosideret; |
14f9c5c9 | 8832 | |
4c4b4cd2 PH |
8833 | switch (TYPE_CODE (type)) |
8834 | { | |
8835 | default: | |
e1d5a0d2 PH |
8836 | lim_warning (_("Membership test incompletely implemented; " |
8837 | "always returns true")); | |
fbb06eb1 UW |
8838 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
8839 | return value_from_longest (type, (LONGEST) 1); | |
4c4b4cd2 PH |
8840 | |
8841 | case TYPE_CODE_RANGE: | |
030b4912 UW |
8842 | arg2 = value_from_longest (type, TYPE_LOW_BOUND (type)); |
8843 | arg3 = value_from_longest (type, TYPE_HIGH_BOUND (type)); | |
f44316fa UW |
8844 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
8845 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg3); | |
fbb06eb1 UW |
8846 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
8847 | return | |
8848 | value_from_longest (type, | |
4c4b4cd2 PH |
8849 | (value_less (arg1, arg3) |
8850 | || value_equal (arg1, arg3)) | |
8851 | && (value_less (arg2, arg1) | |
8852 | || value_equal (arg2, arg1))); | |
8853 | } | |
8854 | ||
8855 | case BINOP_IN_BOUNDS: | |
14f9c5c9 | 8856 | (*pos) += 2; |
4c4b4cd2 PH |
8857 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
8858 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
14f9c5c9 | 8859 | |
4c4b4cd2 PH |
8860 | if (noside == EVAL_SKIP) |
8861 | goto nosideret; | |
14f9c5c9 | 8862 | |
4c4b4cd2 | 8863 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
fbb06eb1 UW |
8864 | { |
8865 | type = language_bool_type (exp->language_defn, exp->gdbarch); | |
8866 | return value_zero (type, not_lval); | |
8867 | } | |
14f9c5c9 | 8868 | |
4c4b4cd2 | 8869 | tem = longest_to_int (exp->elts[pc + 1].longconst); |
14f9c5c9 | 8870 | |
df407dfe | 8871 | if (tem < 1 || tem > ada_array_arity (value_type (arg2))) |
323e0a4a | 8872 | error (_("invalid dimension number to 'range")); |
14f9c5c9 | 8873 | |
4c4b4cd2 PH |
8874 | arg3 = ada_array_bound (arg2, tem, 1); |
8875 | arg2 = ada_array_bound (arg2, tem, 0); | |
d2e4a39e | 8876 | |
f44316fa UW |
8877 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
8878 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg3); | |
fbb06eb1 | 8879 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
4c4b4cd2 | 8880 | return |
fbb06eb1 | 8881 | value_from_longest (type, |
4c4b4cd2 PH |
8882 | (value_less (arg1, arg3) |
8883 | || value_equal (arg1, arg3)) | |
8884 | && (value_less (arg2, arg1) | |
8885 | || value_equal (arg2, arg1))); | |
8886 | ||
8887 | case TERNOP_IN_RANGE: | |
8888 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8889 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8890 | arg3 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8891 | ||
8892 | if (noside == EVAL_SKIP) | |
8893 | goto nosideret; | |
8894 | ||
f44316fa UW |
8895 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
8896 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg3); | |
fbb06eb1 | 8897 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
4c4b4cd2 | 8898 | return |
fbb06eb1 | 8899 | value_from_longest (type, |
4c4b4cd2 PH |
8900 | (value_less (arg1, arg3) |
8901 | || value_equal (arg1, arg3)) | |
8902 | && (value_less (arg2, arg1) | |
8903 | || value_equal (arg2, arg1))); | |
8904 | ||
8905 | case OP_ATR_FIRST: | |
8906 | case OP_ATR_LAST: | |
8907 | case OP_ATR_LENGTH: | |
8908 | { | |
76a01679 JB |
8909 | struct type *type_arg; |
8910 | if (exp->elts[*pos].opcode == OP_TYPE) | |
8911 | { | |
8912 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
8913 | arg1 = NULL; | |
8914 | type_arg = exp->elts[pc + 2].type; | |
8915 | } | |
8916 | else | |
8917 | { | |
8918 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8919 | type_arg = NULL; | |
8920 | } | |
8921 | ||
8922 | if (exp->elts[*pos].opcode != OP_LONG) | |
323e0a4a | 8923 | error (_("Invalid operand to '%s"), ada_attribute_name (op)); |
76a01679 JB |
8924 | tem = longest_to_int (exp->elts[*pos + 2].longconst); |
8925 | *pos += 4; | |
8926 | ||
8927 | if (noside == EVAL_SKIP) | |
8928 | goto nosideret; | |
8929 | ||
8930 | if (type_arg == NULL) | |
8931 | { | |
8932 | arg1 = ada_coerce_ref (arg1); | |
8933 | ||
df407dfe | 8934 | if (ada_is_packed_array_type (value_type (arg1))) |
76a01679 JB |
8935 | arg1 = ada_coerce_to_simple_array (arg1); |
8936 | ||
df407dfe | 8937 | if (tem < 1 || tem > ada_array_arity (value_type (arg1))) |
323e0a4a | 8938 | error (_("invalid dimension number to '%s"), |
76a01679 JB |
8939 | ada_attribute_name (op)); |
8940 | ||
8941 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8942 | { | |
df407dfe | 8943 | type = ada_index_type (value_type (arg1), tem); |
76a01679 JB |
8944 | if (type == NULL) |
8945 | error | |
323e0a4a | 8946 | (_("attempt to take bound of something that is not an array")); |
76a01679 JB |
8947 | return allocate_value (type); |
8948 | } | |
8949 | ||
8950 | switch (op) | |
8951 | { | |
8952 | default: /* Should never happen. */ | |
323e0a4a | 8953 | error (_("unexpected attribute encountered")); |
76a01679 JB |
8954 | case OP_ATR_FIRST: |
8955 | return ada_array_bound (arg1, tem, 0); | |
8956 | case OP_ATR_LAST: | |
8957 | return ada_array_bound (arg1, tem, 1); | |
8958 | case OP_ATR_LENGTH: | |
8959 | return ada_array_length (arg1, tem); | |
8960 | } | |
8961 | } | |
8962 | else if (discrete_type_p (type_arg)) | |
8963 | { | |
8964 | struct type *range_type; | |
8965 | char *name = ada_type_name (type_arg); | |
8966 | range_type = NULL; | |
8967 | if (name != NULL && TYPE_CODE (type_arg) != TYPE_CODE_ENUM) | |
8968 | range_type = | |
8969 | to_fixed_range_type (name, NULL, TYPE_OBJFILE (type_arg)); | |
8970 | if (range_type == NULL) | |
8971 | range_type = type_arg; | |
8972 | switch (op) | |
8973 | { | |
8974 | default: | |
323e0a4a | 8975 | error (_("unexpected attribute encountered")); |
76a01679 | 8976 | case OP_ATR_FIRST: |
690cc4eb PH |
8977 | return value_from_longest |
8978 | (range_type, discrete_type_low_bound (range_type)); | |
76a01679 | 8979 | case OP_ATR_LAST: |
690cc4eb PH |
8980 | return value_from_longest |
8981 | (range_type, discrete_type_high_bound (range_type)); | |
76a01679 | 8982 | case OP_ATR_LENGTH: |
323e0a4a | 8983 | error (_("the 'length attribute applies only to array types")); |
76a01679 JB |
8984 | } |
8985 | } | |
8986 | else if (TYPE_CODE (type_arg) == TYPE_CODE_FLT) | |
323e0a4a | 8987 | error (_("unimplemented type attribute")); |
76a01679 JB |
8988 | else |
8989 | { | |
8990 | LONGEST low, high; | |
8991 | ||
8992 | if (ada_is_packed_array_type (type_arg)) | |
8993 | type_arg = decode_packed_array_type (type_arg); | |
8994 | ||
8995 | if (tem < 1 || tem > ada_array_arity (type_arg)) | |
323e0a4a | 8996 | error (_("invalid dimension number to '%s"), |
76a01679 JB |
8997 | ada_attribute_name (op)); |
8998 | ||
8999 | type = ada_index_type (type_arg, tem); | |
9000 | if (type == NULL) | |
9001 | error | |
323e0a4a | 9002 | (_("attempt to take bound of something that is not an array")); |
76a01679 JB |
9003 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
9004 | return allocate_value (type); | |
9005 | ||
9006 | switch (op) | |
9007 | { | |
9008 | default: | |
323e0a4a | 9009 | error (_("unexpected attribute encountered")); |
76a01679 JB |
9010 | case OP_ATR_FIRST: |
9011 | low = ada_array_bound_from_type (type_arg, tem, 0, &type); | |
9012 | return value_from_longest (type, low); | |
9013 | case OP_ATR_LAST: | |
9014 | high = ada_array_bound_from_type (type_arg, tem, 1, &type); | |
9015 | return value_from_longest (type, high); | |
9016 | case OP_ATR_LENGTH: | |
9017 | low = ada_array_bound_from_type (type_arg, tem, 0, &type); | |
9018 | high = ada_array_bound_from_type (type_arg, tem, 1, NULL); | |
9019 | return value_from_longest (type, high - low + 1); | |
9020 | } | |
9021 | } | |
14f9c5c9 AS |
9022 | } |
9023 | ||
4c4b4cd2 PH |
9024 | case OP_ATR_TAG: |
9025 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9026 | if (noside == EVAL_SKIP) | |
76a01679 | 9027 | goto nosideret; |
4c4b4cd2 PH |
9028 | |
9029 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
76a01679 | 9030 | return value_zero (ada_tag_type (arg1), not_lval); |
4c4b4cd2 PH |
9031 | |
9032 | return ada_value_tag (arg1); | |
9033 | ||
9034 | case OP_ATR_MIN: | |
9035 | case OP_ATR_MAX: | |
9036 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 AS |
9037 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
9038 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9039 | if (noside == EVAL_SKIP) | |
76a01679 | 9040 | goto nosideret; |
d2e4a39e | 9041 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
df407dfe | 9042 | return value_zero (value_type (arg1), not_lval); |
14f9c5c9 | 9043 | else |
f44316fa UW |
9044 | { |
9045 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
9046 | return value_binop (arg1, arg2, | |
9047 | op == OP_ATR_MIN ? BINOP_MIN : BINOP_MAX); | |
9048 | } | |
14f9c5c9 | 9049 | |
4c4b4cd2 PH |
9050 | case OP_ATR_MODULUS: |
9051 | { | |
76a01679 JB |
9052 | struct type *type_arg = exp->elts[pc + 2].type; |
9053 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
4c4b4cd2 | 9054 | |
76a01679 JB |
9055 | if (noside == EVAL_SKIP) |
9056 | goto nosideret; | |
4c4b4cd2 | 9057 | |
76a01679 | 9058 | if (!ada_is_modular_type (type_arg)) |
323e0a4a | 9059 | error (_("'modulus must be applied to modular type")); |
4c4b4cd2 | 9060 | |
76a01679 JB |
9061 | return value_from_longest (TYPE_TARGET_TYPE (type_arg), |
9062 | ada_modulus (type_arg)); | |
4c4b4cd2 PH |
9063 | } |
9064 | ||
9065 | ||
9066 | case OP_ATR_POS: | |
9067 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 AS |
9068 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
9069 | if (noside == EVAL_SKIP) | |
76a01679 | 9070 | goto nosideret; |
3cb382c9 UW |
9071 | type = builtin_type (exp->gdbarch)->builtin_int; |
9072 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
9073 | return value_zero (type, not_lval); | |
14f9c5c9 | 9074 | else |
3cb382c9 | 9075 | return value_pos_atr (type, arg1); |
14f9c5c9 | 9076 | |
4c4b4cd2 PH |
9077 | case OP_ATR_SIZE: |
9078 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8c1c099f JB |
9079 | type = value_type (arg1); |
9080 | ||
9081 | /* If the argument is a reference, then dereference its type, since | |
9082 | the user is really asking for the size of the actual object, | |
9083 | not the size of the pointer. */ | |
9084 | if (TYPE_CODE (type) == TYPE_CODE_REF) | |
9085 | type = TYPE_TARGET_TYPE (type); | |
9086 | ||
4c4b4cd2 | 9087 | if (noside == EVAL_SKIP) |
76a01679 | 9088 | goto nosideret; |
4c4b4cd2 | 9089 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
6d2e05aa | 9090 | return value_zero (builtin_type_int32, not_lval); |
4c4b4cd2 | 9091 | else |
6d2e05aa | 9092 | return value_from_longest (builtin_type_int32, |
8c1c099f | 9093 | TARGET_CHAR_BIT * TYPE_LENGTH (type)); |
4c4b4cd2 PH |
9094 | |
9095 | case OP_ATR_VAL: | |
9096 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 | 9097 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
4c4b4cd2 | 9098 | type = exp->elts[pc + 2].type; |
14f9c5c9 | 9099 | if (noside == EVAL_SKIP) |
76a01679 | 9100 | goto nosideret; |
4c4b4cd2 | 9101 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 9102 | return value_zero (type, not_lval); |
4c4b4cd2 | 9103 | else |
76a01679 | 9104 | return value_val_atr (type, arg1); |
4c4b4cd2 PH |
9105 | |
9106 | case BINOP_EXP: | |
9107 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9108 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9109 | if (noside == EVAL_SKIP) | |
9110 | goto nosideret; | |
9111 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
df407dfe | 9112 | return value_zero (value_type (arg1), not_lval); |
4c4b4cd2 | 9113 | else |
f44316fa UW |
9114 | { |
9115 | /* For integer exponentiation operations, | |
9116 | only promote the first argument. */ | |
9117 | if (is_integral_type (value_type (arg2))) | |
9118 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); | |
9119 | else | |
9120 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
9121 | ||
9122 | return value_binop (arg1, arg2, op); | |
9123 | } | |
4c4b4cd2 PH |
9124 | |
9125 | case UNOP_PLUS: | |
9126 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9127 | if (noside == EVAL_SKIP) | |
9128 | goto nosideret; | |
9129 | else | |
9130 | return arg1; | |
9131 | ||
9132 | case UNOP_ABS: | |
9133 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9134 | if (noside == EVAL_SKIP) | |
9135 | goto nosideret; | |
f44316fa | 9136 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); |
df407dfe | 9137 | if (value_less (arg1, value_zero (value_type (arg1), not_lval))) |
4c4b4cd2 | 9138 | return value_neg (arg1); |
14f9c5c9 | 9139 | else |
4c4b4cd2 | 9140 | return arg1; |
14f9c5c9 AS |
9141 | |
9142 | case UNOP_IND: | |
6b0d7253 | 9143 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
14f9c5c9 | 9144 | if (noside == EVAL_SKIP) |
4c4b4cd2 | 9145 | goto nosideret; |
df407dfe | 9146 | type = ada_check_typedef (value_type (arg1)); |
14f9c5c9 | 9147 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 PH |
9148 | { |
9149 | if (ada_is_array_descriptor_type (type)) | |
9150 | /* GDB allows dereferencing GNAT array descriptors. */ | |
9151 | { | |
9152 | struct type *arrType = ada_type_of_array (arg1, 0); | |
9153 | if (arrType == NULL) | |
323e0a4a | 9154 | error (_("Attempt to dereference null array pointer.")); |
00a4c844 | 9155 | return value_at_lazy (arrType, 0); |
4c4b4cd2 PH |
9156 | } |
9157 | else if (TYPE_CODE (type) == TYPE_CODE_PTR | |
9158 | || TYPE_CODE (type) == TYPE_CODE_REF | |
9159 | /* In C you can dereference an array to get the 1st elt. */ | |
9160 | || TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
714e53ab PH |
9161 | { |
9162 | type = to_static_fixed_type | |
9163 | (ada_aligned_type | |
9164 | (ada_check_typedef (TYPE_TARGET_TYPE (type)))); | |
9165 | check_size (type); | |
9166 | return value_zero (type, lval_memory); | |
9167 | } | |
4c4b4cd2 | 9168 | else if (TYPE_CODE (type) == TYPE_CODE_INT) |
6b0d7253 JB |
9169 | { |
9170 | /* GDB allows dereferencing an int. */ | |
9171 | if (expect_type == NULL) | |
9172 | return value_zero (builtin_type (exp->gdbarch)->builtin_int, | |
9173 | lval_memory); | |
9174 | else | |
9175 | { | |
9176 | expect_type = | |
9177 | to_static_fixed_type (ada_aligned_type (expect_type)); | |
9178 | return value_zero (expect_type, lval_memory); | |
9179 | } | |
9180 | } | |
4c4b4cd2 | 9181 | else |
323e0a4a | 9182 | error (_("Attempt to take contents of a non-pointer value.")); |
4c4b4cd2 | 9183 | } |
76a01679 | 9184 | arg1 = ada_coerce_ref (arg1); /* FIXME: What is this for?? */ |
df407dfe | 9185 | type = ada_check_typedef (value_type (arg1)); |
d2e4a39e | 9186 | |
96967637 JB |
9187 | if (TYPE_CODE (type) == TYPE_CODE_INT) |
9188 | /* GDB allows dereferencing an int. If we were given | |
9189 | the expect_type, then use that as the target type. | |
9190 | Otherwise, assume that the target type is an int. */ | |
9191 | { | |
9192 | if (expect_type != NULL) | |
9193 | return ada_value_ind (value_cast (lookup_pointer_type (expect_type), | |
9194 | arg1)); | |
9195 | else | |
9196 | return value_at_lazy (builtin_type (exp->gdbarch)->builtin_int, | |
9197 | (CORE_ADDR) value_as_address (arg1)); | |
9198 | } | |
6b0d7253 | 9199 | |
4c4b4cd2 PH |
9200 | if (ada_is_array_descriptor_type (type)) |
9201 | /* GDB allows dereferencing GNAT array descriptors. */ | |
9202 | return ada_coerce_to_simple_array (arg1); | |
14f9c5c9 | 9203 | else |
4c4b4cd2 | 9204 | return ada_value_ind (arg1); |
14f9c5c9 AS |
9205 | |
9206 | case STRUCTOP_STRUCT: | |
9207 | tem = longest_to_int (exp->elts[pc + 1].longconst); | |
9208 | (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); | |
9209 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9210 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 9211 | goto nosideret; |
14f9c5c9 | 9212 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 9213 | { |
df407dfe | 9214 | struct type *type1 = value_type (arg1); |
76a01679 JB |
9215 | if (ada_is_tagged_type (type1, 1)) |
9216 | { | |
9217 | type = ada_lookup_struct_elt_type (type1, | |
9218 | &exp->elts[pc + 2].string, | |
9219 | 1, 1, NULL); | |
9220 | if (type == NULL) | |
9221 | /* In this case, we assume that the field COULD exist | |
9222 | in some extension of the type. Return an object of | |
9223 | "type" void, which will match any formal | |
9224 | (see ada_type_match). */ | |
9225 | return value_zero (builtin_type_void, lval_memory); | |
9226 | } | |
9227 | else | |
9228 | type = | |
9229 | ada_lookup_struct_elt_type (type1, &exp->elts[pc + 2].string, 1, | |
9230 | 0, NULL); | |
9231 | ||
9232 | return value_zero (ada_aligned_type (type), lval_memory); | |
9233 | } | |
14f9c5c9 | 9234 | else |
76a01679 JB |
9235 | return |
9236 | ada_to_fixed_value (unwrap_value | |
9237 | (ada_value_struct_elt | |
03ee6b2e | 9238 | (arg1, &exp->elts[pc + 2].string, 0))); |
14f9c5c9 | 9239 | case OP_TYPE: |
4c4b4cd2 PH |
9240 | /* The value is not supposed to be used. This is here to make it |
9241 | easier to accommodate expressions that contain types. */ | |
14f9c5c9 AS |
9242 | (*pos) += 2; |
9243 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 9244 | goto nosideret; |
14f9c5c9 | 9245 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
a6cfbe68 | 9246 | return allocate_value (exp->elts[pc + 1].type); |
14f9c5c9 | 9247 | else |
323e0a4a | 9248 | error (_("Attempt to use a type name as an expression")); |
52ce6436 PH |
9249 | |
9250 | case OP_AGGREGATE: | |
9251 | case OP_CHOICES: | |
9252 | case OP_OTHERS: | |
9253 | case OP_DISCRETE_RANGE: | |
9254 | case OP_POSITIONAL: | |
9255 | case OP_NAME: | |
9256 | if (noside == EVAL_NORMAL) | |
9257 | switch (op) | |
9258 | { | |
9259 | case OP_NAME: | |
9260 | error (_("Undefined name, ambiguous name, or renaming used in " | |
e1d5a0d2 | 9261 | "component association: %s."), &exp->elts[pc+2].string); |
52ce6436 PH |
9262 | case OP_AGGREGATE: |
9263 | error (_("Aggregates only allowed on the right of an assignment")); | |
9264 | default: | |
e1d5a0d2 | 9265 | internal_error (__FILE__, __LINE__, _("aggregate apparently mangled")); |
52ce6436 PH |
9266 | } |
9267 | ||
9268 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
9269 | *pos += oplen - 1; | |
9270 | for (tem = 0; tem < nargs; tem += 1) | |
9271 | ada_evaluate_subexp (NULL, exp, pos, noside); | |
9272 | goto nosideret; | |
14f9c5c9 AS |
9273 | } |
9274 | ||
9275 | nosideret: | |
cb18ec49 | 9276 | return value_from_longest (builtin_type_int8, (LONGEST) 1); |
14f9c5c9 | 9277 | } |
14f9c5c9 | 9278 | \f |
d2e4a39e | 9279 | |
4c4b4cd2 | 9280 | /* Fixed point */ |
14f9c5c9 AS |
9281 | |
9282 | /* If TYPE encodes an Ada fixed-point type, return the suffix of the | |
9283 | type name that encodes the 'small and 'delta information. | |
4c4b4cd2 | 9284 | Otherwise, return NULL. */ |
14f9c5c9 | 9285 | |
d2e4a39e | 9286 | static const char * |
ebf56fd3 | 9287 | fixed_type_info (struct type *type) |
14f9c5c9 | 9288 | { |
d2e4a39e | 9289 | const char *name = ada_type_name (type); |
14f9c5c9 AS |
9290 | enum type_code code = (type == NULL) ? TYPE_CODE_UNDEF : TYPE_CODE (type); |
9291 | ||
d2e4a39e AS |
9292 | if ((code == TYPE_CODE_INT || code == TYPE_CODE_RANGE) && name != NULL) |
9293 | { | |
14f9c5c9 AS |
9294 | const char *tail = strstr (name, "___XF_"); |
9295 | if (tail == NULL) | |
4c4b4cd2 | 9296 | return NULL; |
d2e4a39e | 9297 | else |
4c4b4cd2 | 9298 | return tail + 5; |
14f9c5c9 AS |
9299 | } |
9300 | else if (code == TYPE_CODE_RANGE && TYPE_TARGET_TYPE (type) != type) | |
9301 | return fixed_type_info (TYPE_TARGET_TYPE (type)); | |
9302 | else | |
9303 | return NULL; | |
9304 | } | |
9305 | ||
4c4b4cd2 | 9306 | /* Returns non-zero iff TYPE represents an Ada fixed-point type. */ |
14f9c5c9 AS |
9307 | |
9308 | int | |
ebf56fd3 | 9309 | ada_is_fixed_point_type (struct type *type) |
14f9c5c9 AS |
9310 | { |
9311 | return fixed_type_info (type) != NULL; | |
9312 | } | |
9313 | ||
4c4b4cd2 PH |
9314 | /* Return non-zero iff TYPE represents a System.Address type. */ |
9315 | ||
9316 | int | |
9317 | ada_is_system_address_type (struct type *type) | |
9318 | { | |
9319 | return (TYPE_NAME (type) | |
9320 | && strcmp (TYPE_NAME (type), "system__address") == 0); | |
9321 | } | |
9322 | ||
14f9c5c9 AS |
9323 | /* Assuming that TYPE is the representation of an Ada fixed-point |
9324 | type, return its delta, or -1 if the type is malformed and the | |
4c4b4cd2 | 9325 | delta cannot be determined. */ |
14f9c5c9 AS |
9326 | |
9327 | DOUBLEST | |
ebf56fd3 | 9328 | ada_delta (struct type *type) |
14f9c5c9 AS |
9329 | { |
9330 | const char *encoding = fixed_type_info (type); | |
9331 | long num, den; | |
9332 | ||
9333 | if (sscanf (encoding, "_%ld_%ld", &num, &den) < 2) | |
9334 | return -1.0; | |
d2e4a39e | 9335 | else |
14f9c5c9 AS |
9336 | return (DOUBLEST) num / (DOUBLEST) den; |
9337 | } | |
9338 | ||
9339 | /* Assuming that ada_is_fixed_point_type (TYPE), return the scaling | |
4c4b4cd2 | 9340 | factor ('SMALL value) associated with the type. */ |
14f9c5c9 AS |
9341 | |
9342 | static DOUBLEST | |
ebf56fd3 | 9343 | scaling_factor (struct type *type) |
14f9c5c9 AS |
9344 | { |
9345 | const char *encoding = fixed_type_info (type); | |
9346 | unsigned long num0, den0, num1, den1; | |
9347 | int n; | |
d2e4a39e | 9348 | |
14f9c5c9 AS |
9349 | n = sscanf (encoding, "_%lu_%lu_%lu_%lu", &num0, &den0, &num1, &den1); |
9350 | ||
9351 | if (n < 2) | |
9352 | return 1.0; | |
9353 | else if (n == 4) | |
9354 | return (DOUBLEST) num1 / (DOUBLEST) den1; | |
d2e4a39e | 9355 | else |
14f9c5c9 AS |
9356 | return (DOUBLEST) num0 / (DOUBLEST) den0; |
9357 | } | |
9358 | ||
9359 | ||
9360 | /* Assuming that X is the representation of a value of fixed-point | |
4c4b4cd2 | 9361 | type TYPE, return its floating-point equivalent. */ |
14f9c5c9 AS |
9362 | |
9363 | DOUBLEST | |
ebf56fd3 | 9364 | ada_fixed_to_float (struct type *type, LONGEST x) |
14f9c5c9 | 9365 | { |
d2e4a39e | 9366 | return (DOUBLEST) x *scaling_factor (type); |
14f9c5c9 AS |
9367 | } |
9368 | ||
4c4b4cd2 PH |
9369 | /* The representation of a fixed-point value of type TYPE |
9370 | corresponding to the value X. */ | |
14f9c5c9 AS |
9371 | |
9372 | LONGEST | |
ebf56fd3 | 9373 | ada_float_to_fixed (struct type *type, DOUBLEST x) |
14f9c5c9 AS |
9374 | { |
9375 | return (LONGEST) (x / scaling_factor (type) + 0.5); | |
9376 | } | |
9377 | ||
9378 | ||
4c4b4cd2 | 9379 | /* VAX floating formats */ |
14f9c5c9 AS |
9380 | |
9381 | /* Non-zero iff TYPE represents one of the special VAX floating-point | |
4c4b4cd2 PH |
9382 | types. */ |
9383 | ||
14f9c5c9 | 9384 | int |
d2e4a39e | 9385 | ada_is_vax_floating_type (struct type *type) |
14f9c5c9 | 9386 | { |
d2e4a39e | 9387 | int name_len = |
14f9c5c9 | 9388 | (ada_type_name (type) == NULL) ? 0 : strlen (ada_type_name (type)); |
d2e4a39e | 9389 | return |
14f9c5c9 | 9390 | name_len > 6 |
d2e4a39e | 9391 | && (TYPE_CODE (type) == TYPE_CODE_INT |
4c4b4cd2 PH |
9392 | || TYPE_CODE (type) == TYPE_CODE_RANGE) |
9393 | && strncmp (ada_type_name (type) + name_len - 6, "___XF", 5) == 0; | |
14f9c5c9 AS |
9394 | } |
9395 | ||
9396 | /* The type of special VAX floating-point type this is, assuming | |
4c4b4cd2 PH |
9397 | ada_is_vax_floating_point. */ |
9398 | ||
14f9c5c9 | 9399 | int |
d2e4a39e | 9400 | ada_vax_float_type_suffix (struct type *type) |
14f9c5c9 | 9401 | { |
d2e4a39e | 9402 | return ada_type_name (type)[strlen (ada_type_name (type)) - 1]; |
14f9c5c9 AS |
9403 | } |
9404 | ||
4c4b4cd2 | 9405 | /* A value representing the special debugging function that outputs |
14f9c5c9 | 9406 | VAX floating-point values of the type represented by TYPE. Assumes |
4c4b4cd2 PH |
9407 | ada_is_vax_floating_type (TYPE). */ |
9408 | ||
d2e4a39e AS |
9409 | struct value * |
9410 | ada_vax_float_print_function (struct type *type) | |
9411 | { | |
9412 | switch (ada_vax_float_type_suffix (type)) | |
9413 | { | |
9414 | case 'F': | |
9415 | return get_var_value ("DEBUG_STRING_F", 0); | |
9416 | case 'D': | |
9417 | return get_var_value ("DEBUG_STRING_D", 0); | |
9418 | case 'G': | |
9419 | return get_var_value ("DEBUG_STRING_G", 0); | |
9420 | default: | |
323e0a4a | 9421 | error (_("invalid VAX floating-point type")); |
d2e4a39e | 9422 | } |
14f9c5c9 | 9423 | } |
14f9c5c9 | 9424 | \f |
d2e4a39e | 9425 | |
4c4b4cd2 | 9426 | /* Range types */ |
14f9c5c9 AS |
9427 | |
9428 | /* Scan STR beginning at position K for a discriminant name, and | |
9429 | return the value of that discriminant field of DVAL in *PX. If | |
9430 | PNEW_K is not null, put the position of the character beyond the | |
9431 | name scanned in *PNEW_K. Return 1 if successful; return 0 and do | |
4c4b4cd2 | 9432 | not alter *PX and *PNEW_K if unsuccessful. */ |
14f9c5c9 AS |
9433 | |
9434 | static int | |
07d8f827 | 9435 | scan_discrim_bound (char *str, int k, struct value *dval, LONGEST * px, |
76a01679 | 9436 | int *pnew_k) |
14f9c5c9 AS |
9437 | { |
9438 | static char *bound_buffer = NULL; | |
9439 | static size_t bound_buffer_len = 0; | |
9440 | char *bound; | |
9441 | char *pend; | |
d2e4a39e | 9442 | struct value *bound_val; |
14f9c5c9 AS |
9443 | |
9444 | if (dval == NULL || str == NULL || str[k] == '\0') | |
9445 | return 0; | |
9446 | ||
d2e4a39e | 9447 | pend = strstr (str + k, "__"); |
14f9c5c9 AS |
9448 | if (pend == NULL) |
9449 | { | |
d2e4a39e | 9450 | bound = str + k; |
14f9c5c9 AS |
9451 | k += strlen (bound); |
9452 | } | |
d2e4a39e | 9453 | else |
14f9c5c9 | 9454 | { |
d2e4a39e | 9455 | GROW_VECT (bound_buffer, bound_buffer_len, pend - (str + k) + 1); |
14f9c5c9 | 9456 | bound = bound_buffer; |
d2e4a39e AS |
9457 | strncpy (bound_buffer, str + k, pend - (str + k)); |
9458 | bound[pend - (str + k)] = '\0'; | |
9459 | k = pend - str; | |
14f9c5c9 | 9460 | } |
d2e4a39e | 9461 | |
df407dfe | 9462 | bound_val = ada_search_struct_field (bound, dval, 0, value_type (dval)); |
14f9c5c9 AS |
9463 | if (bound_val == NULL) |
9464 | return 0; | |
9465 | ||
9466 | *px = value_as_long (bound_val); | |
9467 | if (pnew_k != NULL) | |
9468 | *pnew_k = k; | |
9469 | return 1; | |
9470 | } | |
9471 | ||
9472 | /* Value of variable named NAME in the current environment. If | |
9473 | no such variable found, then if ERR_MSG is null, returns 0, and | |
4c4b4cd2 PH |
9474 | otherwise causes an error with message ERR_MSG. */ |
9475 | ||
d2e4a39e AS |
9476 | static struct value * |
9477 | get_var_value (char *name, char *err_msg) | |
14f9c5c9 | 9478 | { |
4c4b4cd2 | 9479 | struct ada_symbol_info *syms; |
14f9c5c9 AS |
9480 | int nsyms; |
9481 | ||
4c4b4cd2 PH |
9482 | nsyms = ada_lookup_symbol_list (name, get_selected_block (0), VAR_DOMAIN, |
9483 | &syms); | |
14f9c5c9 AS |
9484 | |
9485 | if (nsyms != 1) | |
9486 | { | |
9487 | if (err_msg == NULL) | |
4c4b4cd2 | 9488 | return 0; |
14f9c5c9 | 9489 | else |
8a3fe4f8 | 9490 | error (("%s"), err_msg); |
14f9c5c9 AS |
9491 | } |
9492 | ||
4c4b4cd2 | 9493 | return value_of_variable (syms[0].sym, syms[0].block); |
14f9c5c9 | 9494 | } |
d2e4a39e | 9495 | |
14f9c5c9 | 9496 | /* Value of integer variable named NAME in the current environment. If |
4c4b4cd2 PH |
9497 | no such variable found, returns 0, and sets *FLAG to 0. If |
9498 | successful, sets *FLAG to 1. */ | |
9499 | ||
14f9c5c9 | 9500 | LONGEST |
4c4b4cd2 | 9501 | get_int_var_value (char *name, int *flag) |
14f9c5c9 | 9502 | { |
4c4b4cd2 | 9503 | struct value *var_val = get_var_value (name, 0); |
d2e4a39e | 9504 | |
14f9c5c9 AS |
9505 | if (var_val == 0) |
9506 | { | |
9507 | if (flag != NULL) | |
4c4b4cd2 | 9508 | *flag = 0; |
14f9c5c9 AS |
9509 | return 0; |
9510 | } | |
9511 | else | |
9512 | { | |
9513 | if (flag != NULL) | |
4c4b4cd2 | 9514 | *flag = 1; |
14f9c5c9 AS |
9515 | return value_as_long (var_val); |
9516 | } | |
9517 | } | |
d2e4a39e | 9518 | |
14f9c5c9 AS |
9519 | |
9520 | /* Return a range type whose base type is that of the range type named | |
9521 | NAME in the current environment, and whose bounds are calculated | |
4c4b4cd2 | 9522 | from NAME according to the GNAT range encoding conventions. |
14f9c5c9 AS |
9523 | Extract discriminant values, if needed, from DVAL. If a new type |
9524 | must be created, allocate in OBJFILE's space. The bounds | |
9525 | information, in general, is encoded in NAME, the base type given in | |
4c4b4cd2 | 9526 | the named range type. */ |
14f9c5c9 | 9527 | |
d2e4a39e | 9528 | static struct type * |
ebf56fd3 | 9529 | to_fixed_range_type (char *name, struct value *dval, struct objfile *objfile) |
14f9c5c9 AS |
9530 | { |
9531 | struct type *raw_type = ada_find_any_type (name); | |
9532 | struct type *base_type; | |
d2e4a39e | 9533 | char *subtype_info; |
14f9c5c9 AS |
9534 | |
9535 | if (raw_type == NULL) | |
6d84d3d8 | 9536 | base_type = builtin_type_int32; |
14f9c5c9 AS |
9537 | else if (TYPE_CODE (raw_type) == TYPE_CODE_RANGE) |
9538 | base_type = TYPE_TARGET_TYPE (raw_type); | |
9539 | else | |
9540 | base_type = raw_type; | |
9541 | ||
9542 | subtype_info = strstr (name, "___XD"); | |
9543 | if (subtype_info == NULL) | |
690cc4eb PH |
9544 | { |
9545 | LONGEST L = discrete_type_low_bound (raw_type); | |
9546 | LONGEST U = discrete_type_high_bound (raw_type); | |
9547 | if (L < INT_MIN || U > INT_MAX) | |
9548 | return raw_type; | |
9549 | else | |
9550 | return create_range_type (alloc_type (objfile), raw_type, | |
9551 | discrete_type_low_bound (raw_type), | |
9552 | discrete_type_high_bound (raw_type)); | |
9553 | } | |
14f9c5c9 AS |
9554 | else |
9555 | { | |
9556 | static char *name_buf = NULL; | |
9557 | static size_t name_len = 0; | |
9558 | int prefix_len = subtype_info - name; | |
9559 | LONGEST L, U; | |
9560 | struct type *type; | |
9561 | char *bounds_str; | |
9562 | int n; | |
9563 | ||
9564 | GROW_VECT (name_buf, name_len, prefix_len + 5); | |
9565 | strncpy (name_buf, name, prefix_len); | |
9566 | name_buf[prefix_len] = '\0'; | |
9567 | ||
9568 | subtype_info += 5; | |
9569 | bounds_str = strchr (subtype_info, '_'); | |
9570 | n = 1; | |
9571 | ||
d2e4a39e | 9572 | if (*subtype_info == 'L') |
4c4b4cd2 PH |
9573 | { |
9574 | if (!ada_scan_number (bounds_str, n, &L, &n) | |
9575 | && !scan_discrim_bound (bounds_str, n, dval, &L, &n)) | |
9576 | return raw_type; | |
9577 | if (bounds_str[n] == '_') | |
9578 | n += 2; | |
9579 | else if (bounds_str[n] == '.') /* FIXME? SGI Workshop kludge. */ | |
9580 | n += 1; | |
9581 | subtype_info += 1; | |
9582 | } | |
d2e4a39e | 9583 | else |
4c4b4cd2 PH |
9584 | { |
9585 | int ok; | |
9586 | strcpy (name_buf + prefix_len, "___L"); | |
9587 | L = get_int_var_value (name_buf, &ok); | |
9588 | if (!ok) | |
9589 | { | |
323e0a4a | 9590 | lim_warning (_("Unknown lower bound, using 1.")); |
4c4b4cd2 PH |
9591 | L = 1; |
9592 | } | |
9593 | } | |
14f9c5c9 | 9594 | |
d2e4a39e | 9595 | if (*subtype_info == 'U') |
4c4b4cd2 PH |
9596 | { |
9597 | if (!ada_scan_number (bounds_str, n, &U, &n) | |
9598 | && !scan_discrim_bound (bounds_str, n, dval, &U, &n)) | |
9599 | return raw_type; | |
9600 | } | |
d2e4a39e | 9601 | else |
4c4b4cd2 PH |
9602 | { |
9603 | int ok; | |
9604 | strcpy (name_buf + prefix_len, "___U"); | |
9605 | U = get_int_var_value (name_buf, &ok); | |
9606 | if (!ok) | |
9607 | { | |
323e0a4a | 9608 | lim_warning (_("Unknown upper bound, using %ld."), (long) L); |
4c4b4cd2 PH |
9609 | U = L; |
9610 | } | |
9611 | } | |
14f9c5c9 | 9612 | |
d2e4a39e | 9613 | if (objfile == NULL) |
4c4b4cd2 | 9614 | objfile = TYPE_OBJFILE (base_type); |
14f9c5c9 | 9615 | type = create_range_type (alloc_type (objfile), base_type, L, U); |
d2e4a39e | 9616 | TYPE_NAME (type) = name; |
14f9c5c9 AS |
9617 | return type; |
9618 | } | |
9619 | } | |
9620 | ||
4c4b4cd2 PH |
9621 | /* True iff NAME is the name of a range type. */ |
9622 | ||
14f9c5c9 | 9623 | int |
d2e4a39e | 9624 | ada_is_range_type_name (const char *name) |
14f9c5c9 AS |
9625 | { |
9626 | return (name != NULL && strstr (name, "___XD")); | |
d2e4a39e | 9627 | } |
14f9c5c9 | 9628 | \f |
d2e4a39e | 9629 | |
4c4b4cd2 PH |
9630 | /* Modular types */ |
9631 | ||
9632 | /* True iff TYPE is an Ada modular type. */ | |
14f9c5c9 | 9633 | |
14f9c5c9 | 9634 | int |
d2e4a39e | 9635 | ada_is_modular_type (struct type *type) |
14f9c5c9 | 9636 | { |
4c4b4cd2 | 9637 | struct type *subranged_type = base_type (type); |
14f9c5c9 AS |
9638 | |
9639 | return (subranged_type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE | |
690cc4eb | 9640 | && TYPE_CODE (subranged_type) == TYPE_CODE_INT |
4c4b4cd2 | 9641 | && TYPE_UNSIGNED (subranged_type)); |
14f9c5c9 AS |
9642 | } |
9643 | ||
4c4b4cd2 PH |
9644 | /* Assuming ada_is_modular_type (TYPE), the modulus of TYPE. */ |
9645 | ||
61ee279c | 9646 | ULONGEST |
d2e4a39e | 9647 | ada_modulus (struct type * type) |
14f9c5c9 | 9648 | { |
d37209fd | 9649 | return (ULONGEST) (unsigned int) TYPE_HIGH_BOUND (type) + 1; |
14f9c5c9 | 9650 | } |
d2e4a39e | 9651 | \f |
f7f9143b JB |
9652 | |
9653 | /* Ada exception catchpoint support: | |
9654 | --------------------------------- | |
9655 | ||
9656 | We support 3 kinds of exception catchpoints: | |
9657 | . catchpoints on Ada exceptions | |
9658 | . catchpoints on unhandled Ada exceptions | |
9659 | . catchpoints on failed assertions | |
9660 | ||
9661 | Exceptions raised during failed assertions, or unhandled exceptions | |
9662 | could perfectly be caught with the general catchpoint on Ada exceptions. | |
9663 | However, we can easily differentiate these two special cases, and having | |
9664 | the option to distinguish these two cases from the rest can be useful | |
9665 | to zero-in on certain situations. | |
9666 | ||
9667 | Exception catchpoints are a specialized form of breakpoint, | |
9668 | since they rely on inserting breakpoints inside known routines | |
9669 | of the GNAT runtime. The implementation therefore uses a standard | |
9670 | breakpoint structure of the BP_BREAKPOINT type, but with its own set | |
9671 | of breakpoint_ops. | |
9672 | ||
0259addd JB |
9673 | Support in the runtime for exception catchpoints have been changed |
9674 | a few times already, and these changes affect the implementation | |
9675 | of these catchpoints. In order to be able to support several | |
9676 | variants of the runtime, we use a sniffer that will determine | |
9677 | the runtime variant used by the program being debugged. | |
9678 | ||
f7f9143b JB |
9679 | At this time, we do not support the use of conditions on Ada exception |
9680 | catchpoints. The COND and COND_STRING fields are therefore set | |
9681 | to NULL (most of the time, see below). | |
9682 | ||
9683 | Conditions where EXP_STRING, COND, and COND_STRING are used: | |
9684 | ||
9685 | When a user specifies the name of a specific exception in the case | |
9686 | of catchpoints on Ada exceptions, we store the name of that exception | |
9687 | in the EXP_STRING. We then translate this request into an actual | |
9688 | condition stored in COND_STRING, and then parse it into an expression | |
9689 | stored in COND. */ | |
9690 | ||
9691 | /* The different types of catchpoints that we introduced for catching | |
9692 | Ada exceptions. */ | |
9693 | ||
9694 | enum exception_catchpoint_kind | |
9695 | { | |
9696 | ex_catch_exception, | |
9697 | ex_catch_exception_unhandled, | |
9698 | ex_catch_assert | |
9699 | }; | |
9700 | ||
3d0b0fa3 JB |
9701 | /* Ada's standard exceptions. */ |
9702 | ||
9703 | static char *standard_exc[] = { | |
9704 | "constraint_error", | |
9705 | "program_error", | |
9706 | "storage_error", | |
9707 | "tasking_error" | |
9708 | }; | |
9709 | ||
0259addd JB |
9710 | typedef CORE_ADDR (ada_unhandled_exception_name_addr_ftype) (void); |
9711 | ||
9712 | /* A structure that describes how to support exception catchpoints | |
9713 | for a given executable. */ | |
9714 | ||
9715 | struct exception_support_info | |
9716 | { | |
9717 | /* The name of the symbol to break on in order to insert | |
9718 | a catchpoint on exceptions. */ | |
9719 | const char *catch_exception_sym; | |
9720 | ||
9721 | /* The name of the symbol to break on in order to insert | |
9722 | a catchpoint on unhandled exceptions. */ | |
9723 | const char *catch_exception_unhandled_sym; | |
9724 | ||
9725 | /* The name of the symbol to break on in order to insert | |
9726 | a catchpoint on failed assertions. */ | |
9727 | const char *catch_assert_sym; | |
9728 | ||
9729 | /* Assuming that the inferior just triggered an unhandled exception | |
9730 | catchpoint, this function is responsible for returning the address | |
9731 | in inferior memory where the name of that exception is stored. | |
9732 | Return zero if the address could not be computed. */ | |
9733 | ada_unhandled_exception_name_addr_ftype *unhandled_exception_name_addr; | |
9734 | }; | |
9735 | ||
9736 | static CORE_ADDR ada_unhandled_exception_name_addr (void); | |
9737 | static CORE_ADDR ada_unhandled_exception_name_addr_from_raise (void); | |
9738 | ||
9739 | /* The following exception support info structure describes how to | |
9740 | implement exception catchpoints with the latest version of the | |
9741 | Ada runtime (as of 2007-03-06). */ | |
9742 | ||
9743 | static const struct exception_support_info default_exception_support_info = | |
9744 | { | |
9745 | "__gnat_debug_raise_exception", /* catch_exception_sym */ | |
9746 | "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */ | |
9747 | "__gnat_debug_raise_assert_failure", /* catch_assert_sym */ | |
9748 | ada_unhandled_exception_name_addr | |
9749 | }; | |
9750 | ||
9751 | /* The following exception support info structure describes how to | |
9752 | implement exception catchpoints with a slightly older version | |
9753 | of the Ada runtime. */ | |
9754 | ||
9755 | static const struct exception_support_info exception_support_info_fallback = | |
9756 | { | |
9757 | "__gnat_raise_nodefer_with_msg", /* catch_exception_sym */ | |
9758 | "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */ | |
9759 | "system__assertions__raise_assert_failure", /* catch_assert_sym */ | |
9760 | ada_unhandled_exception_name_addr_from_raise | |
9761 | }; | |
9762 | ||
9763 | /* For each executable, we sniff which exception info structure to use | |
9764 | and cache it in the following global variable. */ | |
9765 | ||
9766 | static const struct exception_support_info *exception_info = NULL; | |
9767 | ||
9768 | /* Inspect the Ada runtime and determine which exception info structure | |
9769 | should be used to provide support for exception catchpoints. | |
9770 | ||
9771 | This function will always set exception_info, or raise an error. */ | |
9772 | ||
9773 | static void | |
9774 | ada_exception_support_info_sniffer (void) | |
9775 | { | |
9776 | struct symbol *sym; | |
9777 | ||
9778 | /* If the exception info is already known, then no need to recompute it. */ | |
9779 | if (exception_info != NULL) | |
9780 | return; | |
9781 | ||
9782 | /* Check the latest (default) exception support info. */ | |
9783 | sym = standard_lookup (default_exception_support_info.catch_exception_sym, | |
9784 | NULL, VAR_DOMAIN); | |
9785 | if (sym != NULL) | |
9786 | { | |
9787 | exception_info = &default_exception_support_info; | |
9788 | return; | |
9789 | } | |
9790 | ||
9791 | /* Try our fallback exception suport info. */ | |
9792 | sym = standard_lookup (exception_support_info_fallback.catch_exception_sym, | |
9793 | NULL, VAR_DOMAIN); | |
9794 | if (sym != NULL) | |
9795 | { | |
9796 | exception_info = &exception_support_info_fallback; | |
9797 | return; | |
9798 | } | |
9799 | ||
9800 | /* Sometimes, it is normal for us to not be able to find the routine | |
9801 | we are looking for. This happens when the program is linked with | |
9802 | the shared version of the GNAT runtime, and the program has not been | |
9803 | started yet. Inform the user of these two possible causes if | |
9804 | applicable. */ | |
9805 | ||
9806 | if (ada_update_initial_language (language_unknown, NULL) != language_ada) | |
9807 | error (_("Unable to insert catchpoint. Is this an Ada main program?")); | |
9808 | ||
9809 | /* If the symbol does not exist, then check that the program is | |
9810 | already started, to make sure that shared libraries have been | |
9811 | loaded. If it is not started, this may mean that the symbol is | |
9812 | in a shared library. */ | |
9813 | ||
9814 | if (ptid_get_pid (inferior_ptid) == 0) | |
9815 | error (_("Unable to insert catchpoint. Try to start the program first.")); | |
9816 | ||
9817 | /* At this point, we know that we are debugging an Ada program and | |
9818 | that the inferior has been started, but we still are not able to | |
9819 | find the run-time symbols. That can mean that we are in | |
9820 | configurable run time mode, or that a-except as been optimized | |
9821 | out by the linker... In any case, at this point it is not worth | |
9822 | supporting this feature. */ | |
9823 | ||
9824 | error (_("Cannot insert catchpoints in this configuration.")); | |
9825 | } | |
9826 | ||
9827 | /* An observer of "executable_changed" events. | |
9828 | Its role is to clear certain cached values that need to be recomputed | |
9829 | each time a new executable is loaded by GDB. */ | |
9830 | ||
9831 | static void | |
781b42b0 | 9832 | ada_executable_changed_observer (void) |
0259addd JB |
9833 | { |
9834 | /* If the executable changed, then it is possible that the Ada runtime | |
9835 | is different. So we need to invalidate the exception support info | |
9836 | cache. */ | |
9837 | exception_info = NULL; | |
9838 | } | |
9839 | ||
f7f9143b JB |
9840 | /* Return the name of the function at PC, NULL if could not find it. |
9841 | This function only checks the debugging information, not the symbol | |
9842 | table. */ | |
9843 | ||
9844 | static char * | |
9845 | function_name_from_pc (CORE_ADDR pc) | |
9846 | { | |
9847 | char *func_name; | |
9848 | ||
9849 | if (!find_pc_partial_function (pc, &func_name, NULL, NULL)) | |
9850 | return NULL; | |
9851 | ||
9852 | return func_name; | |
9853 | } | |
9854 | ||
9855 | /* True iff FRAME is very likely to be that of a function that is | |
9856 | part of the runtime system. This is all very heuristic, but is | |
9857 | intended to be used as advice as to what frames are uninteresting | |
9858 | to most users. */ | |
9859 | ||
9860 | static int | |
9861 | is_known_support_routine (struct frame_info *frame) | |
9862 | { | |
4ed6b5be | 9863 | struct symtab_and_line sal; |
f7f9143b JB |
9864 | char *func_name; |
9865 | int i; | |
f7f9143b | 9866 | |
4ed6b5be JB |
9867 | /* If this code does not have any debugging information (no symtab), |
9868 | This cannot be any user code. */ | |
f7f9143b | 9869 | |
4ed6b5be | 9870 | find_frame_sal (frame, &sal); |
f7f9143b JB |
9871 | if (sal.symtab == NULL) |
9872 | return 1; | |
9873 | ||
4ed6b5be JB |
9874 | /* If there is a symtab, but the associated source file cannot be |
9875 | located, then assume this is not user code: Selecting a frame | |
9876 | for which we cannot display the code would not be very helpful | |
9877 | for the user. This should also take care of case such as VxWorks | |
9878 | where the kernel has some debugging info provided for a few units. */ | |
f7f9143b | 9879 | |
9bbc9174 | 9880 | if (symtab_to_fullname (sal.symtab) == NULL) |
f7f9143b JB |
9881 | return 1; |
9882 | ||
4ed6b5be JB |
9883 | /* Check the unit filename againt the Ada runtime file naming. |
9884 | We also check the name of the objfile against the name of some | |
9885 | known system libraries that sometimes come with debugging info | |
9886 | too. */ | |
9887 | ||
f7f9143b JB |
9888 | for (i = 0; known_runtime_file_name_patterns[i] != NULL; i += 1) |
9889 | { | |
9890 | re_comp (known_runtime_file_name_patterns[i]); | |
9891 | if (re_exec (sal.symtab->filename)) | |
9892 | return 1; | |
4ed6b5be JB |
9893 | if (sal.symtab->objfile != NULL |
9894 | && re_exec (sal.symtab->objfile->name)) | |
9895 | return 1; | |
f7f9143b JB |
9896 | } |
9897 | ||
4ed6b5be | 9898 | /* Check whether the function is a GNAT-generated entity. */ |
f7f9143b | 9899 | |
4ed6b5be | 9900 | func_name = function_name_from_pc (get_frame_address_in_block (frame)); |
f7f9143b JB |
9901 | if (func_name == NULL) |
9902 | return 1; | |
9903 | ||
9904 | for (i = 0; known_auxiliary_function_name_patterns[i] != NULL; i += 1) | |
9905 | { | |
9906 | re_comp (known_auxiliary_function_name_patterns[i]); | |
9907 | if (re_exec (func_name)) | |
9908 | return 1; | |
9909 | } | |
9910 | ||
9911 | return 0; | |
9912 | } | |
9913 | ||
9914 | /* Find the first frame that contains debugging information and that is not | |
9915 | part of the Ada run-time, starting from FI and moving upward. */ | |
9916 | ||
0ef643c8 | 9917 | void |
f7f9143b JB |
9918 | ada_find_printable_frame (struct frame_info *fi) |
9919 | { | |
9920 | for (; fi != NULL; fi = get_prev_frame (fi)) | |
9921 | { | |
9922 | if (!is_known_support_routine (fi)) | |
9923 | { | |
9924 | select_frame (fi); | |
9925 | break; | |
9926 | } | |
9927 | } | |
9928 | ||
9929 | } | |
9930 | ||
9931 | /* Assuming that the inferior just triggered an unhandled exception | |
9932 | catchpoint, return the address in inferior memory where the name | |
9933 | of the exception is stored. | |
9934 | ||
9935 | Return zero if the address could not be computed. */ | |
9936 | ||
9937 | static CORE_ADDR | |
9938 | ada_unhandled_exception_name_addr (void) | |
0259addd JB |
9939 | { |
9940 | return parse_and_eval_address ("e.full_name"); | |
9941 | } | |
9942 | ||
9943 | /* Same as ada_unhandled_exception_name_addr, except that this function | |
9944 | should be used when the inferior uses an older version of the runtime, | |
9945 | where the exception name needs to be extracted from a specific frame | |
9946 | several frames up in the callstack. */ | |
9947 | ||
9948 | static CORE_ADDR | |
9949 | ada_unhandled_exception_name_addr_from_raise (void) | |
f7f9143b JB |
9950 | { |
9951 | int frame_level; | |
9952 | struct frame_info *fi; | |
9953 | ||
9954 | /* To determine the name of this exception, we need to select | |
9955 | the frame corresponding to RAISE_SYM_NAME. This frame is | |
9956 | at least 3 levels up, so we simply skip the first 3 frames | |
9957 | without checking the name of their associated function. */ | |
9958 | fi = get_current_frame (); | |
9959 | for (frame_level = 0; frame_level < 3; frame_level += 1) | |
9960 | if (fi != NULL) | |
9961 | fi = get_prev_frame (fi); | |
9962 | ||
9963 | while (fi != NULL) | |
9964 | { | |
9965 | const char *func_name = | |
9966 | function_name_from_pc (get_frame_address_in_block (fi)); | |
9967 | if (func_name != NULL | |
0259addd | 9968 | && strcmp (func_name, exception_info->catch_exception_sym) == 0) |
f7f9143b JB |
9969 | break; /* We found the frame we were looking for... */ |
9970 | fi = get_prev_frame (fi); | |
9971 | } | |
9972 | ||
9973 | if (fi == NULL) | |
9974 | return 0; | |
9975 | ||
9976 | select_frame (fi); | |
9977 | return parse_and_eval_address ("id.full_name"); | |
9978 | } | |
9979 | ||
9980 | /* Assuming the inferior just triggered an Ada exception catchpoint | |
9981 | (of any type), return the address in inferior memory where the name | |
9982 | of the exception is stored, if applicable. | |
9983 | ||
9984 | Return zero if the address could not be computed, or if not relevant. */ | |
9985 | ||
9986 | static CORE_ADDR | |
9987 | ada_exception_name_addr_1 (enum exception_catchpoint_kind ex, | |
9988 | struct breakpoint *b) | |
9989 | { | |
9990 | switch (ex) | |
9991 | { | |
9992 | case ex_catch_exception: | |
9993 | return (parse_and_eval_address ("e.full_name")); | |
9994 | break; | |
9995 | ||
9996 | case ex_catch_exception_unhandled: | |
0259addd | 9997 | return exception_info->unhandled_exception_name_addr (); |
f7f9143b JB |
9998 | break; |
9999 | ||
10000 | case ex_catch_assert: | |
10001 | return 0; /* Exception name is not relevant in this case. */ | |
10002 | break; | |
10003 | ||
10004 | default: | |
10005 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
10006 | break; | |
10007 | } | |
10008 | ||
10009 | return 0; /* Should never be reached. */ | |
10010 | } | |
10011 | ||
10012 | /* Same as ada_exception_name_addr_1, except that it intercepts and contains | |
10013 | any error that ada_exception_name_addr_1 might cause to be thrown. | |
10014 | When an error is intercepted, a warning with the error message is printed, | |
10015 | and zero is returned. */ | |
10016 | ||
10017 | static CORE_ADDR | |
10018 | ada_exception_name_addr (enum exception_catchpoint_kind ex, | |
10019 | struct breakpoint *b) | |
10020 | { | |
10021 | struct gdb_exception e; | |
10022 | CORE_ADDR result = 0; | |
10023 | ||
10024 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
10025 | { | |
10026 | result = ada_exception_name_addr_1 (ex, b); | |
10027 | } | |
10028 | ||
10029 | if (e.reason < 0) | |
10030 | { | |
10031 | warning (_("failed to get exception name: %s"), e.message); | |
10032 | return 0; | |
10033 | } | |
10034 | ||
10035 | return result; | |
10036 | } | |
10037 | ||
10038 | /* Implement the PRINT_IT method in the breakpoint_ops structure | |
10039 | for all exception catchpoint kinds. */ | |
10040 | ||
10041 | static enum print_stop_action | |
10042 | print_it_exception (enum exception_catchpoint_kind ex, struct breakpoint *b) | |
10043 | { | |
10044 | const CORE_ADDR addr = ada_exception_name_addr (ex, b); | |
10045 | char exception_name[256]; | |
10046 | ||
10047 | if (addr != 0) | |
10048 | { | |
10049 | read_memory (addr, exception_name, sizeof (exception_name) - 1); | |
10050 | exception_name [sizeof (exception_name) - 1] = '\0'; | |
10051 | } | |
10052 | ||
10053 | ada_find_printable_frame (get_current_frame ()); | |
10054 | ||
10055 | annotate_catchpoint (b->number); | |
10056 | switch (ex) | |
10057 | { | |
10058 | case ex_catch_exception: | |
10059 | if (addr != 0) | |
10060 | printf_filtered (_("\nCatchpoint %d, %s at "), | |
10061 | b->number, exception_name); | |
10062 | else | |
10063 | printf_filtered (_("\nCatchpoint %d, exception at "), b->number); | |
10064 | break; | |
10065 | case ex_catch_exception_unhandled: | |
10066 | if (addr != 0) | |
10067 | printf_filtered (_("\nCatchpoint %d, unhandled %s at "), | |
10068 | b->number, exception_name); | |
10069 | else | |
10070 | printf_filtered (_("\nCatchpoint %d, unhandled exception at "), | |
10071 | b->number); | |
10072 | break; | |
10073 | case ex_catch_assert: | |
10074 | printf_filtered (_("\nCatchpoint %d, failed assertion at "), | |
10075 | b->number); | |
10076 | break; | |
10077 | } | |
10078 | ||
10079 | return PRINT_SRC_AND_LOC; | |
10080 | } | |
10081 | ||
10082 | /* Implement the PRINT_ONE method in the breakpoint_ops structure | |
10083 | for all exception catchpoint kinds. */ | |
10084 | ||
10085 | static void | |
10086 | print_one_exception (enum exception_catchpoint_kind ex, | |
10087 | struct breakpoint *b, CORE_ADDR *last_addr) | |
10088 | { | |
79a45b7d TT |
10089 | struct value_print_options opts; |
10090 | ||
10091 | get_user_print_options (&opts); | |
10092 | if (opts.addressprint) | |
f7f9143b JB |
10093 | { |
10094 | annotate_field (4); | |
10095 | ui_out_field_core_addr (uiout, "addr", b->loc->address); | |
10096 | } | |
10097 | ||
10098 | annotate_field (5); | |
10099 | *last_addr = b->loc->address; | |
10100 | switch (ex) | |
10101 | { | |
10102 | case ex_catch_exception: | |
10103 | if (b->exp_string != NULL) | |
10104 | { | |
10105 | char *msg = xstrprintf (_("`%s' Ada exception"), b->exp_string); | |
10106 | ||
10107 | ui_out_field_string (uiout, "what", msg); | |
10108 | xfree (msg); | |
10109 | } | |
10110 | else | |
10111 | ui_out_field_string (uiout, "what", "all Ada exceptions"); | |
10112 | ||
10113 | break; | |
10114 | ||
10115 | case ex_catch_exception_unhandled: | |
10116 | ui_out_field_string (uiout, "what", "unhandled Ada exceptions"); | |
10117 | break; | |
10118 | ||
10119 | case ex_catch_assert: | |
10120 | ui_out_field_string (uiout, "what", "failed Ada assertions"); | |
10121 | break; | |
10122 | ||
10123 | default: | |
10124 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
10125 | break; | |
10126 | } | |
10127 | } | |
10128 | ||
10129 | /* Implement the PRINT_MENTION method in the breakpoint_ops structure | |
10130 | for all exception catchpoint kinds. */ | |
10131 | ||
10132 | static void | |
10133 | print_mention_exception (enum exception_catchpoint_kind ex, | |
10134 | struct breakpoint *b) | |
10135 | { | |
10136 | switch (ex) | |
10137 | { | |
10138 | case ex_catch_exception: | |
10139 | if (b->exp_string != NULL) | |
10140 | printf_filtered (_("Catchpoint %d: `%s' Ada exception"), | |
10141 | b->number, b->exp_string); | |
10142 | else | |
10143 | printf_filtered (_("Catchpoint %d: all Ada exceptions"), b->number); | |
10144 | ||
10145 | break; | |
10146 | ||
10147 | case ex_catch_exception_unhandled: | |
10148 | printf_filtered (_("Catchpoint %d: unhandled Ada exceptions"), | |
10149 | b->number); | |
10150 | break; | |
10151 | ||
10152 | case ex_catch_assert: | |
10153 | printf_filtered (_("Catchpoint %d: failed Ada assertions"), b->number); | |
10154 | break; | |
10155 | ||
10156 | default: | |
10157 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
10158 | break; | |
10159 | } | |
10160 | } | |
10161 | ||
10162 | /* Virtual table for "catch exception" breakpoints. */ | |
10163 | ||
10164 | static enum print_stop_action | |
10165 | print_it_catch_exception (struct breakpoint *b) | |
10166 | { | |
10167 | return print_it_exception (ex_catch_exception, b); | |
10168 | } | |
10169 | ||
10170 | static void | |
10171 | print_one_catch_exception (struct breakpoint *b, CORE_ADDR *last_addr) | |
10172 | { | |
10173 | print_one_exception (ex_catch_exception, b, last_addr); | |
10174 | } | |
10175 | ||
10176 | static void | |
10177 | print_mention_catch_exception (struct breakpoint *b) | |
10178 | { | |
10179 | print_mention_exception (ex_catch_exception, b); | |
10180 | } | |
10181 | ||
10182 | static struct breakpoint_ops catch_exception_breakpoint_ops = | |
10183 | { | |
ce78b96d JB |
10184 | NULL, /* insert */ |
10185 | NULL, /* remove */ | |
10186 | NULL, /* breakpoint_hit */ | |
f7f9143b JB |
10187 | print_it_catch_exception, |
10188 | print_one_catch_exception, | |
10189 | print_mention_catch_exception | |
10190 | }; | |
10191 | ||
10192 | /* Virtual table for "catch exception unhandled" breakpoints. */ | |
10193 | ||
10194 | static enum print_stop_action | |
10195 | print_it_catch_exception_unhandled (struct breakpoint *b) | |
10196 | { | |
10197 | return print_it_exception (ex_catch_exception_unhandled, b); | |
10198 | } | |
10199 | ||
10200 | static void | |
10201 | print_one_catch_exception_unhandled (struct breakpoint *b, CORE_ADDR *last_addr) | |
10202 | { | |
10203 | print_one_exception (ex_catch_exception_unhandled, b, last_addr); | |
10204 | } | |
10205 | ||
10206 | static void | |
10207 | print_mention_catch_exception_unhandled (struct breakpoint *b) | |
10208 | { | |
10209 | print_mention_exception (ex_catch_exception_unhandled, b); | |
10210 | } | |
10211 | ||
10212 | static struct breakpoint_ops catch_exception_unhandled_breakpoint_ops = { | |
ce78b96d JB |
10213 | NULL, /* insert */ |
10214 | NULL, /* remove */ | |
10215 | NULL, /* breakpoint_hit */ | |
f7f9143b JB |
10216 | print_it_catch_exception_unhandled, |
10217 | print_one_catch_exception_unhandled, | |
10218 | print_mention_catch_exception_unhandled | |
10219 | }; | |
10220 | ||
10221 | /* Virtual table for "catch assert" breakpoints. */ | |
10222 | ||
10223 | static enum print_stop_action | |
10224 | print_it_catch_assert (struct breakpoint *b) | |
10225 | { | |
10226 | return print_it_exception (ex_catch_assert, b); | |
10227 | } | |
10228 | ||
10229 | static void | |
10230 | print_one_catch_assert (struct breakpoint *b, CORE_ADDR *last_addr) | |
10231 | { | |
10232 | print_one_exception (ex_catch_assert, b, last_addr); | |
10233 | } | |
10234 | ||
10235 | static void | |
10236 | print_mention_catch_assert (struct breakpoint *b) | |
10237 | { | |
10238 | print_mention_exception (ex_catch_assert, b); | |
10239 | } | |
10240 | ||
10241 | static struct breakpoint_ops catch_assert_breakpoint_ops = { | |
ce78b96d JB |
10242 | NULL, /* insert */ |
10243 | NULL, /* remove */ | |
10244 | NULL, /* breakpoint_hit */ | |
f7f9143b JB |
10245 | print_it_catch_assert, |
10246 | print_one_catch_assert, | |
10247 | print_mention_catch_assert | |
10248 | }; | |
10249 | ||
10250 | /* Return non-zero if B is an Ada exception catchpoint. */ | |
10251 | ||
10252 | int | |
10253 | ada_exception_catchpoint_p (struct breakpoint *b) | |
10254 | { | |
10255 | return (b->ops == &catch_exception_breakpoint_ops | |
10256 | || b->ops == &catch_exception_unhandled_breakpoint_ops | |
10257 | || b->ops == &catch_assert_breakpoint_ops); | |
10258 | } | |
10259 | ||
f7f9143b JB |
10260 | /* Return a newly allocated copy of the first space-separated token |
10261 | in ARGSP, and then adjust ARGSP to point immediately after that | |
10262 | token. | |
10263 | ||
10264 | Return NULL if ARGPS does not contain any more tokens. */ | |
10265 | ||
10266 | static char * | |
10267 | ada_get_next_arg (char **argsp) | |
10268 | { | |
10269 | char *args = *argsp; | |
10270 | char *end; | |
10271 | char *result; | |
10272 | ||
10273 | /* Skip any leading white space. */ | |
10274 | ||
10275 | while (isspace (*args)) | |
10276 | args++; | |
10277 | ||
10278 | if (args[0] == '\0') | |
10279 | return NULL; /* No more arguments. */ | |
10280 | ||
10281 | /* Find the end of the current argument. */ | |
10282 | ||
10283 | end = args; | |
10284 | while (*end != '\0' && !isspace (*end)) | |
10285 | end++; | |
10286 | ||
10287 | /* Adjust ARGSP to point to the start of the next argument. */ | |
10288 | ||
10289 | *argsp = end; | |
10290 | ||
10291 | /* Make a copy of the current argument and return it. */ | |
10292 | ||
10293 | result = xmalloc (end - args + 1); | |
10294 | strncpy (result, args, end - args); | |
10295 | result[end - args] = '\0'; | |
10296 | ||
10297 | return result; | |
10298 | } | |
10299 | ||
10300 | /* Split the arguments specified in a "catch exception" command. | |
10301 | Set EX to the appropriate catchpoint type. | |
10302 | Set EXP_STRING to the name of the specific exception if | |
10303 | specified by the user. */ | |
10304 | ||
10305 | static void | |
10306 | catch_ada_exception_command_split (char *args, | |
10307 | enum exception_catchpoint_kind *ex, | |
10308 | char **exp_string) | |
10309 | { | |
10310 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); | |
10311 | char *exception_name; | |
10312 | ||
10313 | exception_name = ada_get_next_arg (&args); | |
10314 | make_cleanup (xfree, exception_name); | |
10315 | ||
10316 | /* Check that we do not have any more arguments. Anything else | |
10317 | is unexpected. */ | |
10318 | ||
10319 | while (isspace (*args)) | |
10320 | args++; | |
10321 | ||
10322 | if (args[0] != '\0') | |
10323 | error (_("Junk at end of expression")); | |
10324 | ||
10325 | discard_cleanups (old_chain); | |
10326 | ||
10327 | if (exception_name == NULL) | |
10328 | { | |
10329 | /* Catch all exceptions. */ | |
10330 | *ex = ex_catch_exception; | |
10331 | *exp_string = NULL; | |
10332 | } | |
10333 | else if (strcmp (exception_name, "unhandled") == 0) | |
10334 | { | |
10335 | /* Catch unhandled exceptions. */ | |
10336 | *ex = ex_catch_exception_unhandled; | |
10337 | *exp_string = NULL; | |
10338 | } | |
10339 | else | |
10340 | { | |
10341 | /* Catch a specific exception. */ | |
10342 | *ex = ex_catch_exception; | |
10343 | *exp_string = exception_name; | |
10344 | } | |
10345 | } | |
10346 | ||
10347 | /* Return the name of the symbol on which we should break in order to | |
10348 | implement a catchpoint of the EX kind. */ | |
10349 | ||
10350 | static const char * | |
10351 | ada_exception_sym_name (enum exception_catchpoint_kind ex) | |
10352 | { | |
0259addd JB |
10353 | gdb_assert (exception_info != NULL); |
10354 | ||
f7f9143b JB |
10355 | switch (ex) |
10356 | { | |
10357 | case ex_catch_exception: | |
0259addd | 10358 | return (exception_info->catch_exception_sym); |
f7f9143b JB |
10359 | break; |
10360 | case ex_catch_exception_unhandled: | |
0259addd | 10361 | return (exception_info->catch_exception_unhandled_sym); |
f7f9143b JB |
10362 | break; |
10363 | case ex_catch_assert: | |
0259addd | 10364 | return (exception_info->catch_assert_sym); |
f7f9143b JB |
10365 | break; |
10366 | default: | |
10367 | internal_error (__FILE__, __LINE__, | |
10368 | _("unexpected catchpoint kind (%d)"), ex); | |
10369 | } | |
10370 | } | |
10371 | ||
10372 | /* Return the breakpoint ops "virtual table" used for catchpoints | |
10373 | of the EX kind. */ | |
10374 | ||
10375 | static struct breakpoint_ops * | |
4b9eee8c | 10376 | ada_exception_breakpoint_ops (enum exception_catchpoint_kind ex) |
f7f9143b JB |
10377 | { |
10378 | switch (ex) | |
10379 | { | |
10380 | case ex_catch_exception: | |
10381 | return (&catch_exception_breakpoint_ops); | |
10382 | break; | |
10383 | case ex_catch_exception_unhandled: | |
10384 | return (&catch_exception_unhandled_breakpoint_ops); | |
10385 | break; | |
10386 | case ex_catch_assert: | |
10387 | return (&catch_assert_breakpoint_ops); | |
10388 | break; | |
10389 | default: | |
10390 | internal_error (__FILE__, __LINE__, | |
10391 | _("unexpected catchpoint kind (%d)"), ex); | |
10392 | } | |
10393 | } | |
10394 | ||
10395 | /* Return the condition that will be used to match the current exception | |
10396 | being raised with the exception that the user wants to catch. This | |
10397 | assumes that this condition is used when the inferior just triggered | |
10398 | an exception catchpoint. | |
10399 | ||
10400 | The string returned is a newly allocated string that needs to be | |
10401 | deallocated later. */ | |
10402 | ||
10403 | static char * | |
10404 | ada_exception_catchpoint_cond_string (const char *exp_string) | |
10405 | { | |
3d0b0fa3 JB |
10406 | int i; |
10407 | ||
10408 | /* The standard exceptions are a special case. They are defined in | |
10409 | runtime units that have been compiled without debugging info; if | |
10410 | EXP_STRING is the not-fully-qualified name of a standard | |
10411 | exception (e.g. "constraint_error") then, during the evaluation | |
10412 | of the condition expression, the symbol lookup on this name would | |
10413 | *not* return this standard exception. The catchpoint condition | |
10414 | may then be set only on user-defined exceptions which have the | |
10415 | same not-fully-qualified name (e.g. my_package.constraint_error). | |
10416 | ||
10417 | To avoid this unexcepted behavior, these standard exceptions are | |
10418 | systematically prefixed by "standard". This means that "catch | |
10419 | exception constraint_error" is rewritten into "catch exception | |
10420 | standard.constraint_error". | |
10421 | ||
10422 | If an exception named contraint_error is defined in another package of | |
10423 | the inferior program, then the only way to specify this exception as a | |
10424 | breakpoint condition is to use its fully-qualified named: | |
10425 | e.g. my_package.constraint_error. */ | |
10426 | ||
10427 | for (i = 0; i < sizeof (standard_exc) / sizeof (char *); i++) | |
10428 | { | |
10429 | if (strcmp (standard_exc [i], exp_string) == 0) | |
10430 | { | |
10431 | return xstrprintf ("long_integer (e) = long_integer (&standard.%s)", | |
10432 | exp_string); | |
10433 | } | |
10434 | } | |
f7f9143b JB |
10435 | return xstrprintf ("long_integer (e) = long_integer (&%s)", exp_string); |
10436 | } | |
10437 | ||
10438 | /* Return the expression corresponding to COND_STRING evaluated at SAL. */ | |
10439 | ||
10440 | static struct expression * | |
10441 | ada_parse_catchpoint_condition (char *cond_string, | |
10442 | struct symtab_and_line sal) | |
10443 | { | |
10444 | return (parse_exp_1 (&cond_string, block_for_pc (sal.pc), 0)); | |
10445 | } | |
10446 | ||
10447 | /* Return the symtab_and_line that should be used to insert an exception | |
10448 | catchpoint of the TYPE kind. | |
10449 | ||
10450 | EX_STRING should contain the name of a specific exception | |
10451 | that the catchpoint should catch, or NULL otherwise. | |
10452 | ||
10453 | The idea behind all the remaining parameters is that their names match | |
10454 | the name of certain fields in the breakpoint structure that are used to | |
10455 | handle exception catchpoints. This function returns the value to which | |
10456 | these fields should be set, depending on the type of catchpoint we need | |
10457 | to create. | |
10458 | ||
10459 | If COND and COND_STRING are both non-NULL, any value they might | |
10460 | hold will be free'ed, and then replaced by newly allocated ones. | |
10461 | These parameters are left untouched otherwise. */ | |
10462 | ||
10463 | static struct symtab_and_line | |
10464 | ada_exception_sal (enum exception_catchpoint_kind ex, char *exp_string, | |
10465 | char **addr_string, char **cond_string, | |
10466 | struct expression **cond, struct breakpoint_ops **ops) | |
10467 | { | |
10468 | const char *sym_name; | |
10469 | struct symbol *sym; | |
10470 | struct symtab_and_line sal; | |
10471 | ||
0259addd JB |
10472 | /* First, find out which exception support info to use. */ |
10473 | ada_exception_support_info_sniffer (); | |
10474 | ||
10475 | /* Then lookup the function on which we will break in order to catch | |
f7f9143b JB |
10476 | the Ada exceptions requested by the user. */ |
10477 | ||
10478 | sym_name = ada_exception_sym_name (ex); | |
10479 | sym = standard_lookup (sym_name, NULL, VAR_DOMAIN); | |
10480 | ||
10481 | /* The symbol we're looking up is provided by a unit in the GNAT runtime | |
10482 | that should be compiled with debugging information. As a result, we | |
10483 | expect to find that symbol in the symtabs. If we don't find it, then | |
10484 | the target most likely does not support Ada exceptions, or we cannot | |
10485 | insert exception breakpoints yet, because the GNAT runtime hasn't been | |
10486 | loaded yet. */ | |
10487 | ||
10488 | /* brobecker/2006-12-26: It is conceivable that the runtime was compiled | |
10489 | in such a way that no debugging information is produced for the symbol | |
10490 | we are looking for. In this case, we could search the minimal symbols | |
10491 | as a fall-back mechanism. This would still be operating in degraded | |
10492 | mode, however, as we would still be missing the debugging information | |
10493 | that is needed in order to extract the name of the exception being | |
10494 | raised (this name is printed in the catchpoint message, and is also | |
10495 | used when trying to catch a specific exception). We do not handle | |
10496 | this case for now. */ | |
10497 | ||
10498 | if (sym == NULL) | |
0259addd | 10499 | error (_("Unable to break on '%s' in this configuration."), sym_name); |
f7f9143b JB |
10500 | |
10501 | /* Make sure that the symbol we found corresponds to a function. */ | |
10502 | if (SYMBOL_CLASS (sym) != LOC_BLOCK) | |
10503 | error (_("Symbol \"%s\" is not a function (class = %d)"), | |
10504 | sym_name, SYMBOL_CLASS (sym)); | |
10505 | ||
10506 | sal = find_function_start_sal (sym, 1); | |
10507 | ||
10508 | /* Set ADDR_STRING. */ | |
10509 | ||
10510 | *addr_string = xstrdup (sym_name); | |
10511 | ||
10512 | /* Set the COND and COND_STRING (if not NULL). */ | |
10513 | ||
10514 | if (cond_string != NULL && cond != NULL) | |
10515 | { | |
10516 | if (*cond_string != NULL) | |
10517 | { | |
10518 | xfree (*cond_string); | |
10519 | *cond_string = NULL; | |
10520 | } | |
10521 | if (*cond != NULL) | |
10522 | { | |
10523 | xfree (*cond); | |
10524 | *cond = NULL; | |
10525 | } | |
10526 | if (exp_string != NULL) | |
10527 | { | |
10528 | *cond_string = ada_exception_catchpoint_cond_string (exp_string); | |
10529 | *cond = ada_parse_catchpoint_condition (*cond_string, sal); | |
10530 | } | |
10531 | } | |
10532 | ||
10533 | /* Set OPS. */ | |
4b9eee8c | 10534 | *ops = ada_exception_breakpoint_ops (ex); |
f7f9143b JB |
10535 | |
10536 | return sal; | |
10537 | } | |
10538 | ||
10539 | /* Parse the arguments (ARGS) of the "catch exception" command. | |
10540 | ||
10541 | Set TYPE to the appropriate exception catchpoint type. | |
10542 | If the user asked the catchpoint to catch only a specific | |
10543 | exception, then save the exception name in ADDR_STRING. | |
10544 | ||
10545 | See ada_exception_sal for a description of all the remaining | |
10546 | function arguments of this function. */ | |
10547 | ||
10548 | struct symtab_and_line | |
10549 | ada_decode_exception_location (char *args, char **addr_string, | |
10550 | char **exp_string, char **cond_string, | |
10551 | struct expression **cond, | |
10552 | struct breakpoint_ops **ops) | |
10553 | { | |
10554 | enum exception_catchpoint_kind ex; | |
10555 | ||
10556 | catch_ada_exception_command_split (args, &ex, exp_string); | |
10557 | return ada_exception_sal (ex, *exp_string, addr_string, cond_string, | |
10558 | cond, ops); | |
10559 | } | |
10560 | ||
10561 | struct symtab_and_line | |
10562 | ada_decode_assert_location (char *args, char **addr_string, | |
10563 | struct breakpoint_ops **ops) | |
10564 | { | |
10565 | /* Check that no argument where provided at the end of the command. */ | |
10566 | ||
10567 | if (args != NULL) | |
10568 | { | |
10569 | while (isspace (*args)) | |
10570 | args++; | |
10571 | if (*args != '\0') | |
10572 | error (_("Junk at end of arguments.")); | |
10573 | } | |
10574 | ||
10575 | return ada_exception_sal (ex_catch_assert, NULL, addr_string, NULL, NULL, | |
10576 | ops); | |
10577 | } | |
10578 | ||
4c4b4cd2 PH |
10579 | /* Operators */ |
10580 | /* Information about operators given special treatment in functions | |
10581 | below. */ | |
10582 | /* Format: OP_DEFN (<operator>, <operator length>, <# args>, <binop>). */ | |
10583 | ||
10584 | #define ADA_OPERATORS \ | |
10585 | OP_DEFN (OP_VAR_VALUE, 4, 0, 0) \ | |
10586 | OP_DEFN (BINOP_IN_BOUNDS, 3, 2, 0) \ | |
10587 | OP_DEFN (TERNOP_IN_RANGE, 1, 3, 0) \ | |
10588 | OP_DEFN (OP_ATR_FIRST, 1, 2, 0) \ | |
10589 | OP_DEFN (OP_ATR_LAST, 1, 2, 0) \ | |
10590 | OP_DEFN (OP_ATR_LENGTH, 1, 2, 0) \ | |
10591 | OP_DEFN (OP_ATR_IMAGE, 1, 2, 0) \ | |
10592 | OP_DEFN (OP_ATR_MAX, 1, 3, 0) \ | |
10593 | OP_DEFN (OP_ATR_MIN, 1, 3, 0) \ | |
10594 | OP_DEFN (OP_ATR_MODULUS, 1, 1, 0) \ | |
10595 | OP_DEFN (OP_ATR_POS, 1, 2, 0) \ | |
10596 | OP_DEFN (OP_ATR_SIZE, 1, 1, 0) \ | |
10597 | OP_DEFN (OP_ATR_TAG, 1, 1, 0) \ | |
10598 | OP_DEFN (OP_ATR_VAL, 1, 2, 0) \ | |
10599 | OP_DEFN (UNOP_QUAL, 3, 1, 0) \ | |
52ce6436 PH |
10600 | OP_DEFN (UNOP_IN_RANGE, 3, 1, 0) \ |
10601 | OP_DEFN (OP_OTHERS, 1, 1, 0) \ | |
10602 | OP_DEFN (OP_POSITIONAL, 3, 1, 0) \ | |
10603 | OP_DEFN (OP_DISCRETE_RANGE, 1, 2, 0) | |
4c4b4cd2 PH |
10604 | |
10605 | static void | |
10606 | ada_operator_length (struct expression *exp, int pc, int *oplenp, int *argsp) | |
10607 | { | |
10608 | switch (exp->elts[pc - 1].opcode) | |
10609 | { | |
76a01679 | 10610 | default: |
4c4b4cd2 PH |
10611 | operator_length_standard (exp, pc, oplenp, argsp); |
10612 | break; | |
10613 | ||
10614 | #define OP_DEFN(op, len, args, binop) \ | |
10615 | case op: *oplenp = len; *argsp = args; break; | |
10616 | ADA_OPERATORS; | |
10617 | #undef OP_DEFN | |
52ce6436 PH |
10618 | |
10619 | case OP_AGGREGATE: | |
10620 | *oplenp = 3; | |
10621 | *argsp = longest_to_int (exp->elts[pc - 2].longconst); | |
10622 | break; | |
10623 | ||
10624 | case OP_CHOICES: | |
10625 | *oplenp = 3; | |
10626 | *argsp = longest_to_int (exp->elts[pc - 2].longconst) + 1; | |
10627 | break; | |
4c4b4cd2 PH |
10628 | } |
10629 | } | |
10630 | ||
10631 | static char * | |
10632 | ada_op_name (enum exp_opcode opcode) | |
10633 | { | |
10634 | switch (opcode) | |
10635 | { | |
76a01679 | 10636 | default: |
4c4b4cd2 | 10637 | return op_name_standard (opcode); |
52ce6436 | 10638 | |
4c4b4cd2 PH |
10639 | #define OP_DEFN(op, len, args, binop) case op: return #op; |
10640 | ADA_OPERATORS; | |
10641 | #undef OP_DEFN | |
52ce6436 PH |
10642 | |
10643 | case OP_AGGREGATE: | |
10644 | return "OP_AGGREGATE"; | |
10645 | case OP_CHOICES: | |
10646 | return "OP_CHOICES"; | |
10647 | case OP_NAME: | |
10648 | return "OP_NAME"; | |
4c4b4cd2 PH |
10649 | } |
10650 | } | |
10651 | ||
10652 | /* As for operator_length, but assumes PC is pointing at the first | |
10653 | element of the operator, and gives meaningful results only for the | |
52ce6436 | 10654 | Ada-specific operators, returning 0 for *OPLENP and *ARGSP otherwise. */ |
4c4b4cd2 PH |
10655 | |
10656 | static void | |
76a01679 JB |
10657 | ada_forward_operator_length (struct expression *exp, int pc, |
10658 | int *oplenp, int *argsp) | |
4c4b4cd2 | 10659 | { |
76a01679 | 10660 | switch (exp->elts[pc].opcode) |
4c4b4cd2 PH |
10661 | { |
10662 | default: | |
10663 | *oplenp = *argsp = 0; | |
10664 | break; | |
52ce6436 | 10665 | |
4c4b4cd2 PH |
10666 | #define OP_DEFN(op, len, args, binop) \ |
10667 | case op: *oplenp = len; *argsp = args; break; | |
10668 | ADA_OPERATORS; | |
10669 | #undef OP_DEFN | |
52ce6436 PH |
10670 | |
10671 | case OP_AGGREGATE: | |
10672 | *oplenp = 3; | |
10673 | *argsp = longest_to_int (exp->elts[pc + 1].longconst); | |
10674 | break; | |
10675 | ||
10676 | case OP_CHOICES: | |
10677 | *oplenp = 3; | |
10678 | *argsp = longest_to_int (exp->elts[pc + 1].longconst) + 1; | |
10679 | break; | |
10680 | ||
10681 | case OP_STRING: | |
10682 | case OP_NAME: | |
10683 | { | |
10684 | int len = longest_to_int (exp->elts[pc + 1].longconst); | |
10685 | *oplenp = 4 + BYTES_TO_EXP_ELEM (len + 1); | |
10686 | *argsp = 0; | |
10687 | break; | |
10688 | } | |
4c4b4cd2 PH |
10689 | } |
10690 | } | |
10691 | ||
10692 | static int | |
10693 | ada_dump_subexp_body (struct expression *exp, struct ui_file *stream, int elt) | |
10694 | { | |
10695 | enum exp_opcode op = exp->elts[elt].opcode; | |
10696 | int oplen, nargs; | |
10697 | int pc = elt; | |
10698 | int i; | |
76a01679 | 10699 | |
4c4b4cd2 PH |
10700 | ada_forward_operator_length (exp, elt, &oplen, &nargs); |
10701 | ||
76a01679 | 10702 | switch (op) |
4c4b4cd2 | 10703 | { |
76a01679 | 10704 | /* Ada attributes ('Foo). */ |
4c4b4cd2 PH |
10705 | case OP_ATR_FIRST: |
10706 | case OP_ATR_LAST: | |
10707 | case OP_ATR_LENGTH: | |
10708 | case OP_ATR_IMAGE: | |
10709 | case OP_ATR_MAX: | |
10710 | case OP_ATR_MIN: | |
10711 | case OP_ATR_MODULUS: | |
10712 | case OP_ATR_POS: | |
10713 | case OP_ATR_SIZE: | |
10714 | case OP_ATR_TAG: | |
10715 | case OP_ATR_VAL: | |
10716 | break; | |
10717 | ||
10718 | case UNOP_IN_RANGE: | |
10719 | case UNOP_QUAL: | |
323e0a4a AC |
10720 | /* XXX: gdb_sprint_host_address, type_sprint */ |
10721 | fprintf_filtered (stream, _("Type @")); | |
4c4b4cd2 PH |
10722 | gdb_print_host_address (exp->elts[pc + 1].type, stream); |
10723 | fprintf_filtered (stream, " ("); | |
10724 | type_print (exp->elts[pc + 1].type, NULL, stream, 0); | |
10725 | fprintf_filtered (stream, ")"); | |
10726 | break; | |
10727 | case BINOP_IN_BOUNDS: | |
52ce6436 PH |
10728 | fprintf_filtered (stream, " (%d)", |
10729 | longest_to_int (exp->elts[pc + 2].longconst)); | |
4c4b4cd2 PH |
10730 | break; |
10731 | case TERNOP_IN_RANGE: | |
10732 | break; | |
10733 | ||
52ce6436 PH |
10734 | case OP_AGGREGATE: |
10735 | case OP_OTHERS: | |
10736 | case OP_DISCRETE_RANGE: | |
10737 | case OP_POSITIONAL: | |
10738 | case OP_CHOICES: | |
10739 | break; | |
10740 | ||
10741 | case OP_NAME: | |
10742 | case OP_STRING: | |
10743 | { | |
10744 | char *name = &exp->elts[elt + 2].string; | |
10745 | int len = longest_to_int (exp->elts[elt + 1].longconst); | |
10746 | fprintf_filtered (stream, "Text: `%.*s'", len, name); | |
10747 | break; | |
10748 | } | |
10749 | ||
4c4b4cd2 PH |
10750 | default: |
10751 | return dump_subexp_body_standard (exp, stream, elt); | |
10752 | } | |
10753 | ||
10754 | elt += oplen; | |
10755 | for (i = 0; i < nargs; i += 1) | |
10756 | elt = dump_subexp (exp, stream, elt); | |
10757 | ||
10758 | return elt; | |
10759 | } | |
10760 | ||
10761 | /* The Ada extension of print_subexp (q.v.). */ | |
10762 | ||
76a01679 JB |
10763 | static void |
10764 | ada_print_subexp (struct expression *exp, int *pos, | |
10765 | struct ui_file *stream, enum precedence prec) | |
4c4b4cd2 | 10766 | { |
52ce6436 | 10767 | int oplen, nargs, i; |
4c4b4cd2 PH |
10768 | int pc = *pos; |
10769 | enum exp_opcode op = exp->elts[pc].opcode; | |
10770 | ||
10771 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
10772 | ||
52ce6436 | 10773 | *pos += oplen; |
4c4b4cd2 PH |
10774 | switch (op) |
10775 | { | |
10776 | default: | |
52ce6436 | 10777 | *pos -= oplen; |
4c4b4cd2 PH |
10778 | print_subexp_standard (exp, pos, stream, prec); |
10779 | return; | |
10780 | ||
10781 | case OP_VAR_VALUE: | |
4c4b4cd2 PH |
10782 | fputs_filtered (SYMBOL_NATURAL_NAME (exp->elts[pc + 2].symbol), stream); |
10783 | return; | |
10784 | ||
10785 | case BINOP_IN_BOUNDS: | |
323e0a4a | 10786 | /* XXX: sprint_subexp */ |
4c4b4cd2 | 10787 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 10788 | fputs_filtered (" in ", stream); |
4c4b4cd2 | 10789 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 10790 | fputs_filtered ("'range", stream); |
4c4b4cd2 | 10791 | if (exp->elts[pc + 1].longconst > 1) |
76a01679 JB |
10792 | fprintf_filtered (stream, "(%ld)", |
10793 | (long) exp->elts[pc + 1].longconst); | |
4c4b4cd2 PH |
10794 | return; |
10795 | ||
10796 | case TERNOP_IN_RANGE: | |
4c4b4cd2 | 10797 | if (prec >= PREC_EQUAL) |
76a01679 | 10798 | fputs_filtered ("(", stream); |
323e0a4a | 10799 | /* XXX: sprint_subexp */ |
4c4b4cd2 | 10800 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 10801 | fputs_filtered (" in ", stream); |
4c4b4cd2 PH |
10802 | print_subexp (exp, pos, stream, PREC_EQUAL); |
10803 | fputs_filtered (" .. ", stream); | |
10804 | print_subexp (exp, pos, stream, PREC_EQUAL); | |
10805 | if (prec >= PREC_EQUAL) | |
76a01679 JB |
10806 | fputs_filtered (")", stream); |
10807 | return; | |
4c4b4cd2 PH |
10808 | |
10809 | case OP_ATR_FIRST: | |
10810 | case OP_ATR_LAST: | |
10811 | case OP_ATR_LENGTH: | |
10812 | case OP_ATR_IMAGE: | |
10813 | case OP_ATR_MAX: | |
10814 | case OP_ATR_MIN: | |
10815 | case OP_ATR_MODULUS: | |
10816 | case OP_ATR_POS: | |
10817 | case OP_ATR_SIZE: | |
10818 | case OP_ATR_TAG: | |
10819 | case OP_ATR_VAL: | |
4c4b4cd2 | 10820 | if (exp->elts[*pos].opcode == OP_TYPE) |
76a01679 JB |
10821 | { |
10822 | if (TYPE_CODE (exp->elts[*pos + 1].type) != TYPE_CODE_VOID) | |
10823 | LA_PRINT_TYPE (exp->elts[*pos + 1].type, "", stream, 0, 0); | |
10824 | *pos += 3; | |
10825 | } | |
4c4b4cd2 | 10826 | else |
76a01679 | 10827 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
4c4b4cd2 PH |
10828 | fprintf_filtered (stream, "'%s", ada_attribute_name (op)); |
10829 | if (nargs > 1) | |
76a01679 JB |
10830 | { |
10831 | int tem; | |
10832 | for (tem = 1; tem < nargs; tem += 1) | |
10833 | { | |
10834 | fputs_filtered ((tem == 1) ? " (" : ", ", stream); | |
10835 | print_subexp (exp, pos, stream, PREC_ABOVE_COMMA); | |
10836 | } | |
10837 | fputs_filtered (")", stream); | |
10838 | } | |
4c4b4cd2 | 10839 | return; |
14f9c5c9 | 10840 | |
4c4b4cd2 | 10841 | case UNOP_QUAL: |
4c4b4cd2 PH |
10842 | type_print (exp->elts[pc + 1].type, "", stream, 0); |
10843 | fputs_filtered ("'(", stream); | |
10844 | print_subexp (exp, pos, stream, PREC_PREFIX); | |
10845 | fputs_filtered (")", stream); | |
10846 | return; | |
14f9c5c9 | 10847 | |
4c4b4cd2 | 10848 | case UNOP_IN_RANGE: |
323e0a4a | 10849 | /* XXX: sprint_subexp */ |
4c4b4cd2 | 10850 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 10851 | fputs_filtered (" in ", stream); |
4c4b4cd2 PH |
10852 | LA_PRINT_TYPE (exp->elts[pc + 1].type, "", stream, 1, 0); |
10853 | return; | |
52ce6436 PH |
10854 | |
10855 | case OP_DISCRETE_RANGE: | |
10856 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10857 | fputs_filtered ("..", stream); | |
10858 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10859 | return; | |
10860 | ||
10861 | case OP_OTHERS: | |
10862 | fputs_filtered ("others => ", stream); | |
10863 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10864 | return; | |
10865 | ||
10866 | case OP_CHOICES: | |
10867 | for (i = 0; i < nargs-1; i += 1) | |
10868 | { | |
10869 | if (i > 0) | |
10870 | fputs_filtered ("|", stream); | |
10871 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10872 | } | |
10873 | fputs_filtered (" => ", stream); | |
10874 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10875 | return; | |
10876 | ||
10877 | case OP_POSITIONAL: | |
10878 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10879 | return; | |
10880 | ||
10881 | case OP_AGGREGATE: | |
10882 | fputs_filtered ("(", stream); | |
10883 | for (i = 0; i < nargs; i += 1) | |
10884 | { | |
10885 | if (i > 0) | |
10886 | fputs_filtered (", ", stream); | |
10887 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10888 | } | |
10889 | fputs_filtered (")", stream); | |
10890 | return; | |
4c4b4cd2 PH |
10891 | } |
10892 | } | |
14f9c5c9 AS |
10893 | |
10894 | /* Table mapping opcodes into strings for printing operators | |
10895 | and precedences of the operators. */ | |
10896 | ||
d2e4a39e AS |
10897 | static const struct op_print ada_op_print_tab[] = { |
10898 | {":=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
10899 | {"or else", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
10900 | {"and then", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
10901 | {"or", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
10902 | {"xor", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
10903 | {"and", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
10904 | {"=", BINOP_EQUAL, PREC_EQUAL, 0}, | |
10905 | {"/=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
10906 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
10907 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
10908 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
10909 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
10910 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
10911 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
10912 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
10913 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
10914 | {"&", BINOP_CONCAT, PREC_ADD, 0}, | |
10915 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
10916 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
10917 | {"rem", BINOP_REM, PREC_MUL, 0}, | |
10918 | {"mod", BINOP_MOD, PREC_MUL, 0}, | |
10919 | {"**", BINOP_EXP, PREC_REPEAT, 0}, | |
10920 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
10921 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
10922 | {"+", UNOP_PLUS, PREC_PREFIX, 0}, | |
10923 | {"not ", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
10924 | {"not ", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
10925 | {"abs ", UNOP_ABS, PREC_PREFIX, 0}, | |
4c4b4cd2 PH |
10926 | {".all", UNOP_IND, PREC_SUFFIX, 1}, |
10927 | {"'access", UNOP_ADDR, PREC_SUFFIX, 1}, | |
10928 | {"'size", OP_ATR_SIZE, PREC_SUFFIX, 1}, | |
d2e4a39e | 10929 | {NULL, 0, 0, 0} |
14f9c5c9 AS |
10930 | }; |
10931 | \f | |
72d5681a PH |
10932 | enum ada_primitive_types { |
10933 | ada_primitive_type_int, | |
10934 | ada_primitive_type_long, | |
10935 | ada_primitive_type_short, | |
10936 | ada_primitive_type_char, | |
10937 | ada_primitive_type_float, | |
10938 | ada_primitive_type_double, | |
10939 | ada_primitive_type_void, | |
10940 | ada_primitive_type_long_long, | |
10941 | ada_primitive_type_long_double, | |
10942 | ada_primitive_type_natural, | |
10943 | ada_primitive_type_positive, | |
10944 | ada_primitive_type_system_address, | |
10945 | nr_ada_primitive_types | |
10946 | }; | |
6c038f32 PH |
10947 | |
10948 | static void | |
d4a9a881 | 10949 | ada_language_arch_info (struct gdbarch *gdbarch, |
72d5681a PH |
10950 | struct language_arch_info *lai) |
10951 | { | |
d4a9a881 | 10952 | const struct builtin_type *builtin = builtin_type (gdbarch); |
72d5681a | 10953 | lai->primitive_type_vector |
d4a9a881 | 10954 | = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_ada_primitive_types + 1, |
72d5681a PH |
10955 | struct type *); |
10956 | lai->primitive_type_vector [ada_primitive_type_int] = | |
9a76efb6 | 10957 | init_type (TYPE_CODE_INT, |
d4a9a881 | 10958 | gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT, |
9a76efb6 | 10959 | 0, "integer", (struct objfile *) NULL); |
72d5681a | 10960 | lai->primitive_type_vector [ada_primitive_type_long] = |
9a76efb6 | 10961 | init_type (TYPE_CODE_INT, |
d4a9a881 | 10962 | gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT, |
9a76efb6 | 10963 | 0, "long_integer", (struct objfile *) NULL); |
72d5681a | 10964 | lai->primitive_type_vector [ada_primitive_type_short] = |
9a76efb6 | 10965 | init_type (TYPE_CODE_INT, |
d4a9a881 | 10966 | gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT, |
9a76efb6 | 10967 | 0, "short_integer", (struct objfile *) NULL); |
61ee279c PH |
10968 | lai->string_char_type = |
10969 | lai->primitive_type_vector [ada_primitive_type_char] = | |
6c038f32 PH |
10970 | init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
10971 | 0, "character", (struct objfile *) NULL); | |
72d5681a | 10972 | lai->primitive_type_vector [ada_primitive_type_float] = |
ea06eb3d | 10973 | init_type (TYPE_CODE_FLT, |
d4a9a881 | 10974 | gdbarch_float_bit (gdbarch)/ TARGET_CHAR_BIT, |
6c038f32 | 10975 | 0, "float", (struct objfile *) NULL); |
72d5681a | 10976 | lai->primitive_type_vector [ada_primitive_type_double] = |
ea06eb3d | 10977 | init_type (TYPE_CODE_FLT, |
d4a9a881 | 10978 | gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT, |
6c038f32 | 10979 | 0, "long_float", (struct objfile *) NULL); |
72d5681a | 10980 | lai->primitive_type_vector [ada_primitive_type_long_long] = |
9a76efb6 | 10981 | init_type (TYPE_CODE_INT, |
d4a9a881 | 10982 | gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT, |
6c038f32 | 10983 | 0, "long_long_integer", (struct objfile *) NULL); |
72d5681a | 10984 | lai->primitive_type_vector [ada_primitive_type_long_double] = |
ea06eb3d | 10985 | init_type (TYPE_CODE_FLT, |
d4a9a881 | 10986 | gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT, |
6c038f32 | 10987 | 0, "long_long_float", (struct objfile *) NULL); |
72d5681a | 10988 | lai->primitive_type_vector [ada_primitive_type_natural] = |
9a76efb6 | 10989 | init_type (TYPE_CODE_INT, |
d4a9a881 | 10990 | gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT, |
9a76efb6 | 10991 | 0, "natural", (struct objfile *) NULL); |
72d5681a | 10992 | lai->primitive_type_vector [ada_primitive_type_positive] = |
9a76efb6 | 10993 | init_type (TYPE_CODE_INT, |
d4a9a881 | 10994 | gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT, |
9a76efb6 | 10995 | 0, "positive", (struct objfile *) NULL); |
72d5681a | 10996 | lai->primitive_type_vector [ada_primitive_type_void] = builtin->builtin_void; |
6c038f32 | 10997 | |
72d5681a | 10998 | lai->primitive_type_vector [ada_primitive_type_system_address] = |
6c038f32 PH |
10999 | lookup_pointer_type (init_type (TYPE_CODE_VOID, 1, 0, "void", |
11000 | (struct objfile *) NULL)); | |
72d5681a PH |
11001 | TYPE_NAME (lai->primitive_type_vector [ada_primitive_type_system_address]) |
11002 | = "system__address"; | |
fbb06eb1 UW |
11003 | |
11004 | lai->bool_type_symbol = "boolean"; | |
11005 | lai->bool_type_default = builtin->builtin_bool; | |
6c038f32 | 11006 | } |
6c038f32 PH |
11007 | \f |
11008 | /* Language vector */ | |
11009 | ||
11010 | /* Not really used, but needed in the ada_language_defn. */ | |
11011 | ||
11012 | static void | |
11013 | emit_char (int c, struct ui_file *stream, int quoter) | |
11014 | { | |
11015 | ada_emit_char (c, stream, quoter, 1); | |
11016 | } | |
11017 | ||
11018 | static int | |
11019 | parse (void) | |
11020 | { | |
11021 | warnings_issued = 0; | |
11022 | return ada_parse (); | |
11023 | } | |
11024 | ||
11025 | static const struct exp_descriptor ada_exp_descriptor = { | |
11026 | ada_print_subexp, | |
11027 | ada_operator_length, | |
11028 | ada_op_name, | |
11029 | ada_dump_subexp_body, | |
11030 | ada_evaluate_subexp | |
11031 | }; | |
11032 | ||
11033 | const struct language_defn ada_language_defn = { | |
11034 | "ada", /* Language name */ | |
11035 | language_ada, | |
6c038f32 PH |
11036 | range_check_off, |
11037 | type_check_off, | |
11038 | case_sensitive_on, /* Yes, Ada is case-insensitive, but | |
11039 | that's not quite what this means. */ | |
6c038f32 | 11040 | array_row_major, |
9a044a89 | 11041 | macro_expansion_no, |
6c038f32 PH |
11042 | &ada_exp_descriptor, |
11043 | parse, | |
11044 | ada_error, | |
11045 | resolve, | |
11046 | ada_printchar, /* Print a character constant */ | |
11047 | ada_printstr, /* Function to print string constant */ | |
11048 | emit_char, /* Function to print single char (not used) */ | |
6c038f32 | 11049 | ada_print_type, /* Print a type using appropriate syntax */ |
5c6ce71d | 11050 | default_print_typedef, /* Print a typedef using appropriate syntax */ |
6c038f32 PH |
11051 | ada_val_print, /* Print a value using appropriate syntax */ |
11052 | ada_value_print, /* Print a top-level value */ | |
11053 | NULL, /* Language specific skip_trampoline */ | |
2b2d9e11 | 11054 | NULL, /* name_of_this */ |
6c038f32 PH |
11055 | ada_lookup_symbol_nonlocal, /* Looking up non-local symbols. */ |
11056 | basic_lookup_transparent_type, /* lookup_transparent_type */ | |
11057 | ada_la_decode, /* Language specific symbol demangler */ | |
11058 | NULL, /* Language specific class_name_from_physname */ | |
11059 | ada_op_print_tab, /* expression operators for printing */ | |
11060 | 0, /* c-style arrays */ | |
11061 | 1, /* String lower bound */ | |
6c038f32 | 11062 | ada_get_gdb_completer_word_break_characters, |
41d27058 | 11063 | ada_make_symbol_completion_list, |
72d5681a | 11064 | ada_language_arch_info, |
e79af960 | 11065 | ada_print_array_index, |
41f1b697 | 11066 | default_pass_by_reference, |
6c038f32 PH |
11067 | LANG_MAGIC |
11068 | }; | |
11069 | ||
d2e4a39e | 11070 | void |
6c038f32 | 11071 | _initialize_ada_language (void) |
14f9c5c9 | 11072 | { |
6c038f32 PH |
11073 | add_language (&ada_language_defn); |
11074 | ||
11075 | varsize_limit = 65536; | |
6c038f32 PH |
11076 | |
11077 | obstack_init (&symbol_list_obstack); | |
11078 | ||
11079 | decoded_names_store = htab_create_alloc | |
11080 | (256, htab_hash_string, (int (*)(const void *, const void *)) streq, | |
11081 | NULL, xcalloc, xfree); | |
6b69afc4 JB |
11082 | |
11083 | observer_attach_executable_changed (ada_executable_changed_observer); | |
14f9c5c9 | 11084 | } |