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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 | #ifndef ADA_RETAIN_DOTS |
61 | #define ADA_RETAIN_DOTS 0 | |
62 | #endif | |
63 | ||
64 | /* Define whether or not the C operator '/' truncates towards zero for | |
65 | differently signed operands (truncation direction is undefined in C). | |
66 | Copied from valarith.c. */ | |
67 | ||
68 | #ifndef TRUNCATION_TOWARDS_ZERO | |
69 | #define TRUNCATION_TOWARDS_ZERO ((-5 / 2) == -2) | |
70 | #endif | |
71 | ||
4c4b4cd2 | 72 | static void extract_string (CORE_ADDR addr, char *buf); |
14f9c5c9 | 73 | |
14f9c5c9 AS |
74 | static void modify_general_field (char *, LONGEST, int, int); |
75 | ||
d2e4a39e | 76 | static struct type *desc_base_type (struct type *); |
14f9c5c9 | 77 | |
d2e4a39e | 78 | static struct type *desc_bounds_type (struct type *); |
14f9c5c9 | 79 | |
d2e4a39e | 80 | static struct value *desc_bounds (struct value *); |
14f9c5c9 | 81 | |
d2e4a39e | 82 | static int fat_pntr_bounds_bitpos (struct type *); |
14f9c5c9 | 83 | |
d2e4a39e | 84 | static int fat_pntr_bounds_bitsize (struct type *); |
14f9c5c9 | 85 | |
d2e4a39e | 86 | static struct type *desc_data_type (struct type *); |
14f9c5c9 | 87 | |
d2e4a39e | 88 | static struct value *desc_data (struct value *); |
14f9c5c9 | 89 | |
d2e4a39e | 90 | static int fat_pntr_data_bitpos (struct type *); |
14f9c5c9 | 91 | |
d2e4a39e | 92 | static int fat_pntr_data_bitsize (struct type *); |
14f9c5c9 | 93 | |
d2e4a39e | 94 | static struct value *desc_one_bound (struct value *, int, int); |
14f9c5c9 | 95 | |
d2e4a39e | 96 | static int desc_bound_bitpos (struct type *, int, int); |
14f9c5c9 | 97 | |
d2e4a39e | 98 | static int desc_bound_bitsize (struct type *, int, int); |
14f9c5c9 | 99 | |
d2e4a39e | 100 | static struct type *desc_index_type (struct type *, int); |
14f9c5c9 | 101 | |
d2e4a39e | 102 | static int desc_arity (struct type *); |
14f9c5c9 | 103 | |
d2e4a39e | 104 | static int ada_type_match (struct type *, struct type *, int); |
14f9c5c9 | 105 | |
d2e4a39e | 106 | static int ada_args_match (struct symbol *, struct value **, int); |
14f9c5c9 | 107 | |
4c4b4cd2 | 108 | static struct value *ensure_lval (struct value *, CORE_ADDR *); |
14f9c5c9 | 109 | |
d2e4a39e | 110 | static struct value *convert_actual (struct value *, struct type *, |
4c4b4cd2 | 111 | CORE_ADDR *); |
14f9c5c9 | 112 | |
d2e4a39e | 113 | static struct value *make_array_descriptor (struct type *, struct value *, |
4c4b4cd2 | 114 | CORE_ADDR *); |
14f9c5c9 | 115 | |
4c4b4cd2 | 116 | static void ada_add_block_symbols (struct obstack *, |
76a01679 | 117 | struct block *, const char *, |
2570f2b7 | 118 | domain_enum, struct objfile *, int); |
14f9c5c9 | 119 | |
4c4b4cd2 | 120 | static int is_nonfunction (struct ada_symbol_info *, int); |
14f9c5c9 | 121 | |
76a01679 | 122 | static void add_defn_to_vec (struct obstack *, struct symbol *, |
2570f2b7 | 123 | struct block *); |
14f9c5c9 | 124 | |
4c4b4cd2 PH |
125 | static int num_defns_collected (struct obstack *); |
126 | ||
127 | static struct ada_symbol_info *defns_collected (struct obstack *, int); | |
14f9c5c9 | 128 | |
d2e4a39e | 129 | static struct partial_symbol *ada_lookup_partial_symbol (struct partial_symtab |
76a01679 JB |
130 | *, const char *, int, |
131 | domain_enum, int); | |
14f9c5c9 | 132 | |
d2e4a39e | 133 | static struct symtab *symtab_for_sym (struct symbol *); |
14f9c5c9 | 134 | |
4c4b4cd2 | 135 | static struct value *resolve_subexp (struct expression **, int *, int, |
76a01679 | 136 | struct type *); |
14f9c5c9 | 137 | |
d2e4a39e | 138 | static void replace_operator_with_call (struct expression **, int, int, int, |
4c4b4cd2 | 139 | struct symbol *, struct block *); |
14f9c5c9 | 140 | |
d2e4a39e | 141 | static int possible_user_operator_p (enum exp_opcode, struct value **); |
14f9c5c9 | 142 | |
4c4b4cd2 PH |
143 | static char *ada_op_name (enum exp_opcode); |
144 | ||
145 | static const char *ada_decoded_op_name (enum exp_opcode); | |
14f9c5c9 | 146 | |
d2e4a39e | 147 | static int numeric_type_p (struct type *); |
14f9c5c9 | 148 | |
d2e4a39e | 149 | static int integer_type_p (struct type *); |
14f9c5c9 | 150 | |
d2e4a39e | 151 | static int scalar_type_p (struct type *); |
14f9c5c9 | 152 | |
d2e4a39e | 153 | static int discrete_type_p (struct type *); |
14f9c5c9 | 154 | |
aeb5907d JB |
155 | static enum ada_renaming_category parse_old_style_renaming (struct type *, |
156 | const char **, | |
157 | int *, | |
158 | const char **); | |
159 | ||
160 | static struct symbol *find_old_style_renaming_symbol (const char *, | |
161 | struct block *); | |
162 | ||
4c4b4cd2 | 163 | static struct type *ada_lookup_struct_elt_type (struct type *, char *, |
76a01679 | 164 | int, int, int *); |
4c4b4cd2 | 165 | |
d2e4a39e | 166 | static struct value *evaluate_subexp (struct type *, struct expression *, |
4c4b4cd2 | 167 | int *, enum noside); |
14f9c5c9 | 168 | |
d2e4a39e | 169 | static struct value *evaluate_subexp_type (struct expression *, int *); |
14f9c5c9 | 170 | |
d2e4a39e | 171 | static int is_dynamic_field (struct type *, int); |
14f9c5c9 | 172 | |
10a2c479 | 173 | static struct type *to_fixed_variant_branch_type (struct type *, |
fc1a4b47 | 174 | const gdb_byte *, |
4c4b4cd2 PH |
175 | CORE_ADDR, struct value *); |
176 | ||
177 | static struct type *to_fixed_array_type (struct type *, struct value *, int); | |
14f9c5c9 | 178 | |
d2e4a39e | 179 | static struct type *to_fixed_range_type (char *, struct value *, |
4c4b4cd2 | 180 | struct objfile *); |
14f9c5c9 | 181 | |
d2e4a39e | 182 | static struct type *to_static_fixed_type (struct type *); |
f192137b | 183 | static struct type *static_unwrap_type (struct type *type); |
14f9c5c9 | 184 | |
d2e4a39e | 185 | static struct value *unwrap_value (struct value *); |
14f9c5c9 | 186 | |
d2e4a39e | 187 | static struct type *packed_array_type (struct type *, long *); |
14f9c5c9 | 188 | |
d2e4a39e | 189 | static struct type *decode_packed_array_type (struct type *); |
14f9c5c9 | 190 | |
d2e4a39e | 191 | static struct value *decode_packed_array (struct value *); |
14f9c5c9 | 192 | |
d2e4a39e | 193 | static struct value *value_subscript_packed (struct value *, int, |
4c4b4cd2 | 194 | struct value **); |
14f9c5c9 | 195 | |
52ce6436 PH |
196 | static void move_bits (gdb_byte *, int, const gdb_byte *, int, int); |
197 | ||
4c4b4cd2 PH |
198 | static struct value *coerce_unspec_val_to_type (struct value *, |
199 | struct type *); | |
14f9c5c9 | 200 | |
d2e4a39e | 201 | static struct value *get_var_value (char *, char *); |
14f9c5c9 | 202 | |
d2e4a39e | 203 | static int lesseq_defined_than (struct symbol *, struct symbol *); |
14f9c5c9 | 204 | |
d2e4a39e | 205 | static int equiv_types (struct type *, struct type *); |
14f9c5c9 | 206 | |
d2e4a39e | 207 | static int is_name_suffix (const char *); |
14f9c5c9 | 208 | |
d2e4a39e | 209 | static int wild_match (const char *, int, const char *); |
14f9c5c9 | 210 | |
d2e4a39e | 211 | static struct value *ada_coerce_ref (struct value *); |
14f9c5c9 | 212 | |
4c4b4cd2 PH |
213 | static LONGEST pos_atr (struct value *); |
214 | ||
d2e4a39e | 215 | static struct value *value_pos_atr (struct value *); |
14f9c5c9 | 216 | |
d2e4a39e | 217 | static struct value *value_val_atr (struct type *, struct value *); |
14f9c5c9 | 218 | |
4c4b4cd2 PH |
219 | static struct symbol *standard_lookup (const char *, const struct block *, |
220 | domain_enum); | |
14f9c5c9 | 221 | |
4c4b4cd2 PH |
222 | static struct value *ada_search_struct_field (char *, struct value *, int, |
223 | struct type *); | |
224 | ||
225 | static struct value *ada_value_primitive_field (struct value *, int, int, | |
226 | struct type *); | |
227 | ||
76a01679 | 228 | static int find_struct_field (char *, struct type *, int, |
52ce6436 | 229 | struct type **, int *, int *, int *, int *); |
4c4b4cd2 PH |
230 | |
231 | static struct value *ada_to_fixed_value_create (struct type *, CORE_ADDR, | |
232 | struct value *); | |
233 | ||
234 | static struct value *ada_to_fixed_value (struct value *); | |
14f9c5c9 | 235 | |
4c4b4cd2 PH |
236 | static int ada_resolve_function (struct ada_symbol_info *, int, |
237 | struct value **, int, const char *, | |
238 | struct type *); | |
239 | ||
240 | static struct value *ada_coerce_to_simple_array (struct value *); | |
241 | ||
242 | static int ada_is_direct_array_type (struct type *); | |
243 | ||
72d5681a PH |
244 | static void ada_language_arch_info (struct gdbarch *, |
245 | struct language_arch_info *); | |
714e53ab PH |
246 | |
247 | static void check_size (const struct type *); | |
52ce6436 PH |
248 | |
249 | static struct value *ada_index_struct_field (int, struct value *, int, | |
250 | struct type *); | |
251 | ||
252 | static struct value *assign_aggregate (struct value *, struct value *, | |
253 | struct expression *, int *, enum noside); | |
254 | ||
255 | static void aggregate_assign_from_choices (struct value *, struct value *, | |
256 | struct expression *, | |
257 | int *, LONGEST *, int *, | |
258 | int, LONGEST, LONGEST); | |
259 | ||
260 | static void aggregate_assign_positional (struct value *, struct value *, | |
261 | struct expression *, | |
262 | int *, LONGEST *, int *, int, | |
263 | LONGEST, LONGEST); | |
264 | ||
265 | ||
266 | static void aggregate_assign_others (struct value *, struct value *, | |
267 | struct expression *, | |
268 | int *, LONGEST *, int, LONGEST, LONGEST); | |
269 | ||
270 | ||
271 | static void add_component_interval (LONGEST, LONGEST, LONGEST *, int *, int); | |
272 | ||
273 | ||
274 | static struct value *ada_evaluate_subexp (struct type *, struct expression *, | |
275 | int *, enum noside); | |
276 | ||
277 | static void ada_forward_operator_length (struct expression *, int, int *, | |
278 | int *); | |
4c4b4cd2 PH |
279 | \f |
280 | ||
76a01679 | 281 | |
4c4b4cd2 | 282 | /* Maximum-sized dynamic type. */ |
14f9c5c9 AS |
283 | static unsigned int varsize_limit; |
284 | ||
4c4b4cd2 PH |
285 | /* FIXME: brobecker/2003-09-17: No longer a const because it is |
286 | returned by a function that does not return a const char *. */ | |
287 | static char *ada_completer_word_break_characters = | |
288 | #ifdef VMS | |
289 | " \t\n!@#%^&*()+=|~`}{[]\";:?/,-"; | |
290 | #else | |
14f9c5c9 | 291 | " \t\n!@#$%^&*()+=|~`}{[]\";:?/,-"; |
4c4b4cd2 | 292 | #endif |
14f9c5c9 | 293 | |
4c4b4cd2 | 294 | /* The name of the symbol to use to get the name of the main subprogram. */ |
76a01679 | 295 | static const char ADA_MAIN_PROGRAM_SYMBOL_NAME[] |
4c4b4cd2 | 296 | = "__gnat_ada_main_program_name"; |
14f9c5c9 | 297 | |
4c4b4cd2 PH |
298 | /* Limit on the number of warnings to raise per expression evaluation. */ |
299 | static int warning_limit = 2; | |
300 | ||
301 | /* Number of warning messages issued; reset to 0 by cleanups after | |
302 | expression evaluation. */ | |
303 | static int warnings_issued = 0; | |
304 | ||
305 | static const char *known_runtime_file_name_patterns[] = { | |
306 | ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS NULL | |
307 | }; | |
308 | ||
309 | static const char *known_auxiliary_function_name_patterns[] = { | |
310 | ADA_KNOWN_AUXILIARY_FUNCTION_NAME_PATTERNS NULL | |
311 | }; | |
312 | ||
313 | /* Space for allocating results of ada_lookup_symbol_list. */ | |
314 | static struct obstack symbol_list_obstack; | |
315 | ||
316 | /* Utilities */ | |
317 | ||
41d27058 JB |
318 | /* Given DECODED_NAME a string holding a symbol name in its |
319 | decoded form (ie using the Ada dotted notation), returns | |
320 | its unqualified name. */ | |
321 | ||
322 | static const char * | |
323 | ada_unqualified_name (const char *decoded_name) | |
324 | { | |
325 | const char *result = strrchr (decoded_name, '.'); | |
326 | ||
327 | if (result != NULL) | |
328 | result++; /* Skip the dot... */ | |
329 | else | |
330 | result = decoded_name; | |
331 | ||
332 | return result; | |
333 | } | |
334 | ||
335 | /* Return a string starting with '<', followed by STR, and '>'. | |
336 | The result is good until the next call. */ | |
337 | ||
338 | static char * | |
339 | add_angle_brackets (const char *str) | |
340 | { | |
341 | static char *result = NULL; | |
342 | ||
343 | xfree (result); | |
344 | result = (char *) xmalloc ((strlen (str) + 3) * sizeof (char)); | |
345 | ||
346 | sprintf (result, "<%s>", str); | |
347 | return result; | |
348 | } | |
96d887e8 | 349 | |
4c4b4cd2 PH |
350 | static char * |
351 | ada_get_gdb_completer_word_break_characters (void) | |
352 | { | |
353 | return ada_completer_word_break_characters; | |
354 | } | |
355 | ||
e79af960 JB |
356 | /* Print an array element index using the Ada syntax. */ |
357 | ||
358 | static void | |
359 | ada_print_array_index (struct value *index_value, struct ui_file *stream, | |
360 | int format, enum val_prettyprint pretty) | |
361 | { | |
362 | LA_VALUE_PRINT (index_value, stream, format, pretty); | |
363 | fprintf_filtered (stream, " => "); | |
364 | } | |
365 | ||
4c4b4cd2 PH |
366 | /* Read the string located at ADDR from the inferior and store the |
367 | result into BUF. */ | |
368 | ||
369 | static void | |
14f9c5c9 AS |
370 | extract_string (CORE_ADDR addr, char *buf) |
371 | { | |
d2e4a39e | 372 | int char_index = 0; |
14f9c5c9 | 373 | |
4c4b4cd2 PH |
374 | /* Loop, reading one byte at a time, until we reach the '\000' |
375 | end-of-string marker. */ | |
d2e4a39e AS |
376 | do |
377 | { | |
378 | target_read_memory (addr + char_index * sizeof (char), | |
4c4b4cd2 | 379 | buf + char_index * sizeof (char), sizeof (char)); |
d2e4a39e AS |
380 | char_index++; |
381 | } | |
382 | while (buf[char_index - 1] != '\000'); | |
14f9c5c9 AS |
383 | } |
384 | ||
f27cf670 | 385 | /* Assuming VECT points to an array of *SIZE objects of size |
14f9c5c9 | 386 | ELEMENT_SIZE, grow it to contain at least MIN_SIZE objects, |
f27cf670 | 387 | updating *SIZE as necessary and returning the (new) array. */ |
14f9c5c9 | 388 | |
f27cf670 AS |
389 | void * |
390 | grow_vect (void *vect, size_t *size, size_t min_size, int element_size) | |
14f9c5c9 | 391 | { |
d2e4a39e AS |
392 | if (*size < min_size) |
393 | { | |
394 | *size *= 2; | |
395 | if (*size < min_size) | |
4c4b4cd2 | 396 | *size = min_size; |
f27cf670 | 397 | vect = xrealloc (vect, *size * element_size); |
d2e4a39e | 398 | } |
f27cf670 | 399 | return vect; |
14f9c5c9 AS |
400 | } |
401 | ||
402 | /* True (non-zero) iff TARGET matches FIELD_NAME up to any trailing | |
4c4b4cd2 | 403 | suffix of FIELD_NAME beginning "___". */ |
14f9c5c9 AS |
404 | |
405 | static int | |
ebf56fd3 | 406 | field_name_match (const char *field_name, const char *target) |
14f9c5c9 AS |
407 | { |
408 | int len = strlen (target); | |
d2e4a39e | 409 | return |
4c4b4cd2 PH |
410 | (strncmp (field_name, target, len) == 0 |
411 | && (field_name[len] == '\0' | |
412 | || (strncmp (field_name + len, "___", 3) == 0 | |
76a01679 JB |
413 | && strcmp (field_name + strlen (field_name) - 6, |
414 | "___XVN") != 0))); | |
14f9c5c9 AS |
415 | } |
416 | ||
417 | ||
4c4b4cd2 PH |
418 | /* Assuming TYPE is a TYPE_CODE_STRUCT, find the field whose name matches |
419 | FIELD_NAME, and return its index. This function also handles fields | |
420 | whose name have ___ suffixes because the compiler sometimes alters | |
421 | their name by adding such a suffix to represent fields with certain | |
422 | constraints. If the field could not be found, return a negative | |
423 | number if MAYBE_MISSING is set. Otherwise raise an error. */ | |
424 | ||
425 | int | |
426 | ada_get_field_index (const struct type *type, const char *field_name, | |
427 | int maybe_missing) | |
428 | { | |
429 | int fieldno; | |
430 | for (fieldno = 0; fieldno < TYPE_NFIELDS (type); fieldno++) | |
431 | if (field_name_match (TYPE_FIELD_NAME (type, fieldno), field_name)) | |
432 | return fieldno; | |
433 | ||
434 | if (!maybe_missing) | |
323e0a4a | 435 | error (_("Unable to find field %s in struct %s. Aborting"), |
4c4b4cd2 PH |
436 | field_name, TYPE_NAME (type)); |
437 | ||
438 | return -1; | |
439 | } | |
440 | ||
441 | /* The length of the prefix of NAME prior to any "___" suffix. */ | |
14f9c5c9 AS |
442 | |
443 | int | |
d2e4a39e | 444 | ada_name_prefix_len (const char *name) |
14f9c5c9 AS |
445 | { |
446 | if (name == NULL) | |
447 | return 0; | |
d2e4a39e | 448 | else |
14f9c5c9 | 449 | { |
d2e4a39e | 450 | const char *p = strstr (name, "___"); |
14f9c5c9 | 451 | if (p == NULL) |
4c4b4cd2 | 452 | return strlen (name); |
14f9c5c9 | 453 | else |
4c4b4cd2 | 454 | return p - name; |
14f9c5c9 AS |
455 | } |
456 | } | |
457 | ||
4c4b4cd2 PH |
458 | /* Return non-zero if SUFFIX is a suffix of STR. |
459 | Return zero if STR is null. */ | |
460 | ||
14f9c5c9 | 461 | static int |
d2e4a39e | 462 | is_suffix (const char *str, const char *suffix) |
14f9c5c9 AS |
463 | { |
464 | int len1, len2; | |
465 | if (str == NULL) | |
466 | return 0; | |
467 | len1 = strlen (str); | |
468 | len2 = strlen (suffix); | |
4c4b4cd2 | 469 | return (len1 >= len2 && strcmp (str + len1 - len2, suffix) == 0); |
14f9c5c9 AS |
470 | } |
471 | ||
472 | /* Create a value of type TYPE whose contents come from VALADDR, if it | |
4c4b4cd2 PH |
473 | is non-null, and whose memory address (in the inferior) is |
474 | ADDRESS. */ | |
475 | ||
d2e4a39e | 476 | struct value * |
10a2c479 | 477 | value_from_contents_and_address (struct type *type, |
fc1a4b47 | 478 | const gdb_byte *valaddr, |
4c4b4cd2 | 479 | CORE_ADDR address) |
14f9c5c9 | 480 | { |
d2e4a39e AS |
481 | struct value *v = allocate_value (type); |
482 | if (valaddr == NULL) | |
dfa52d88 | 483 | set_value_lazy (v, 1); |
14f9c5c9 | 484 | else |
990a07ab | 485 | memcpy (value_contents_raw (v), valaddr, TYPE_LENGTH (type)); |
14f9c5c9 AS |
486 | VALUE_ADDRESS (v) = address; |
487 | if (address != 0) | |
488 | VALUE_LVAL (v) = lval_memory; | |
489 | return v; | |
490 | } | |
491 | ||
4c4b4cd2 PH |
492 | /* The contents of value VAL, treated as a value of type TYPE. The |
493 | result is an lval in memory if VAL is. */ | |
14f9c5c9 | 494 | |
d2e4a39e | 495 | static struct value * |
4c4b4cd2 | 496 | coerce_unspec_val_to_type (struct value *val, struct type *type) |
14f9c5c9 | 497 | { |
61ee279c | 498 | type = ada_check_typedef (type); |
df407dfe | 499 | if (value_type (val) == type) |
4c4b4cd2 | 500 | return val; |
d2e4a39e | 501 | else |
14f9c5c9 | 502 | { |
4c4b4cd2 PH |
503 | struct value *result; |
504 | ||
505 | /* Make sure that the object size is not unreasonable before | |
506 | trying to allocate some memory for it. */ | |
714e53ab | 507 | check_size (type); |
4c4b4cd2 PH |
508 | |
509 | result = allocate_value (type); | |
510 | VALUE_LVAL (result) = VALUE_LVAL (val); | |
9bbda503 AC |
511 | set_value_bitsize (result, value_bitsize (val)); |
512 | set_value_bitpos (result, value_bitpos (val)); | |
df407dfe | 513 | VALUE_ADDRESS (result) = VALUE_ADDRESS (val) + value_offset (val); |
d69fe07e | 514 | if (value_lazy (val) |
df407dfe | 515 | || TYPE_LENGTH (type) > TYPE_LENGTH (value_type (val))) |
dfa52d88 | 516 | set_value_lazy (result, 1); |
d2e4a39e | 517 | else |
0fd88904 | 518 | memcpy (value_contents_raw (result), value_contents (val), |
4c4b4cd2 | 519 | TYPE_LENGTH (type)); |
14f9c5c9 AS |
520 | return result; |
521 | } | |
522 | } | |
523 | ||
fc1a4b47 AC |
524 | static const gdb_byte * |
525 | cond_offset_host (const gdb_byte *valaddr, long offset) | |
14f9c5c9 AS |
526 | { |
527 | if (valaddr == NULL) | |
528 | return NULL; | |
529 | else | |
530 | return valaddr + offset; | |
531 | } | |
532 | ||
533 | static CORE_ADDR | |
ebf56fd3 | 534 | cond_offset_target (CORE_ADDR address, long offset) |
14f9c5c9 AS |
535 | { |
536 | if (address == 0) | |
537 | return 0; | |
d2e4a39e | 538 | else |
14f9c5c9 AS |
539 | return address + offset; |
540 | } | |
541 | ||
4c4b4cd2 PH |
542 | /* Issue a warning (as for the definition of warning in utils.c, but |
543 | with exactly one argument rather than ...), unless the limit on the | |
544 | number of warnings has passed during the evaluation of the current | |
545 | expression. */ | |
a2249542 | 546 | |
77109804 AC |
547 | /* FIXME: cagney/2004-10-10: This function is mimicking the behavior |
548 | provided by "complaint". */ | |
549 | static void lim_warning (const char *format, ...) ATTR_FORMAT (printf, 1, 2); | |
550 | ||
14f9c5c9 | 551 | static void |
a2249542 | 552 | lim_warning (const char *format, ...) |
14f9c5c9 | 553 | { |
a2249542 MK |
554 | va_list args; |
555 | va_start (args, format); | |
556 | ||
4c4b4cd2 PH |
557 | warnings_issued += 1; |
558 | if (warnings_issued <= warning_limit) | |
a2249542 MK |
559 | vwarning (format, args); |
560 | ||
561 | va_end (args); | |
4c4b4cd2 PH |
562 | } |
563 | ||
714e53ab PH |
564 | /* Issue an error if the size of an object of type T is unreasonable, |
565 | i.e. if it would be a bad idea to allocate a value of this type in | |
566 | GDB. */ | |
567 | ||
568 | static void | |
569 | check_size (const struct type *type) | |
570 | { | |
571 | if (TYPE_LENGTH (type) > varsize_limit) | |
323e0a4a | 572 | error (_("object size is larger than varsize-limit")); |
714e53ab PH |
573 | } |
574 | ||
575 | ||
c3e5cd34 PH |
576 | /* Note: would have used MAX_OF_TYPE and MIN_OF_TYPE macros from |
577 | gdbtypes.h, but some of the necessary definitions in that file | |
578 | seem to have gone missing. */ | |
579 | ||
580 | /* Maximum value of a SIZE-byte signed integer type. */ | |
4c4b4cd2 | 581 | static LONGEST |
c3e5cd34 | 582 | max_of_size (int size) |
4c4b4cd2 | 583 | { |
76a01679 JB |
584 | LONGEST top_bit = (LONGEST) 1 << (size * 8 - 2); |
585 | return top_bit | (top_bit - 1); | |
4c4b4cd2 PH |
586 | } |
587 | ||
c3e5cd34 | 588 | /* Minimum value of a SIZE-byte signed integer type. */ |
4c4b4cd2 | 589 | static LONGEST |
c3e5cd34 | 590 | min_of_size (int size) |
4c4b4cd2 | 591 | { |
c3e5cd34 | 592 | return -max_of_size (size) - 1; |
4c4b4cd2 PH |
593 | } |
594 | ||
c3e5cd34 | 595 | /* Maximum value of a SIZE-byte unsigned integer type. */ |
4c4b4cd2 | 596 | static ULONGEST |
c3e5cd34 | 597 | umax_of_size (int size) |
4c4b4cd2 | 598 | { |
76a01679 JB |
599 | ULONGEST top_bit = (ULONGEST) 1 << (size * 8 - 1); |
600 | return top_bit | (top_bit - 1); | |
4c4b4cd2 PH |
601 | } |
602 | ||
c3e5cd34 PH |
603 | /* Maximum value of integral type T, as a signed quantity. */ |
604 | static LONGEST | |
605 | max_of_type (struct type *t) | |
4c4b4cd2 | 606 | { |
c3e5cd34 PH |
607 | if (TYPE_UNSIGNED (t)) |
608 | return (LONGEST) umax_of_size (TYPE_LENGTH (t)); | |
609 | else | |
610 | return max_of_size (TYPE_LENGTH (t)); | |
611 | } | |
612 | ||
613 | /* Minimum value of integral type T, as a signed quantity. */ | |
614 | static LONGEST | |
615 | min_of_type (struct type *t) | |
616 | { | |
617 | if (TYPE_UNSIGNED (t)) | |
618 | return 0; | |
619 | else | |
620 | return min_of_size (TYPE_LENGTH (t)); | |
4c4b4cd2 PH |
621 | } |
622 | ||
623 | /* The largest value in the domain of TYPE, a discrete type, as an integer. */ | |
624 | static struct value * | |
625 | discrete_type_high_bound (struct type *type) | |
626 | { | |
76a01679 | 627 | switch (TYPE_CODE (type)) |
4c4b4cd2 PH |
628 | { |
629 | case TYPE_CODE_RANGE: | |
630 | return value_from_longest (TYPE_TARGET_TYPE (type), | |
76a01679 | 631 | TYPE_HIGH_BOUND (type)); |
4c4b4cd2 | 632 | case TYPE_CODE_ENUM: |
76a01679 JB |
633 | return |
634 | value_from_longest (type, | |
635 | TYPE_FIELD_BITPOS (type, | |
636 | TYPE_NFIELDS (type) - 1)); | |
637 | case TYPE_CODE_INT: | |
c3e5cd34 | 638 | return value_from_longest (type, max_of_type (type)); |
4c4b4cd2 | 639 | default: |
323e0a4a | 640 | error (_("Unexpected type in discrete_type_high_bound.")); |
4c4b4cd2 PH |
641 | } |
642 | } | |
643 | ||
644 | /* The largest value in the domain of TYPE, a discrete type, as an integer. */ | |
645 | static struct value * | |
646 | discrete_type_low_bound (struct type *type) | |
647 | { | |
76a01679 | 648 | switch (TYPE_CODE (type)) |
4c4b4cd2 PH |
649 | { |
650 | case TYPE_CODE_RANGE: | |
651 | return value_from_longest (TYPE_TARGET_TYPE (type), | |
76a01679 | 652 | TYPE_LOW_BOUND (type)); |
4c4b4cd2 | 653 | case TYPE_CODE_ENUM: |
76a01679 JB |
654 | return value_from_longest (type, TYPE_FIELD_BITPOS (type, 0)); |
655 | case TYPE_CODE_INT: | |
c3e5cd34 | 656 | return value_from_longest (type, min_of_type (type)); |
4c4b4cd2 | 657 | default: |
323e0a4a | 658 | error (_("Unexpected type in discrete_type_low_bound.")); |
4c4b4cd2 PH |
659 | } |
660 | } | |
661 | ||
662 | /* The identity on non-range types. For range types, the underlying | |
76a01679 | 663 | non-range scalar type. */ |
4c4b4cd2 PH |
664 | |
665 | static struct type * | |
666 | base_type (struct type *type) | |
667 | { | |
668 | while (type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE) | |
669 | { | |
76a01679 JB |
670 | if (type == TYPE_TARGET_TYPE (type) || TYPE_TARGET_TYPE (type) == NULL) |
671 | return type; | |
4c4b4cd2 PH |
672 | type = TYPE_TARGET_TYPE (type); |
673 | } | |
674 | return type; | |
14f9c5c9 | 675 | } |
4c4b4cd2 | 676 | \f |
76a01679 | 677 | |
4c4b4cd2 | 678 | /* Language Selection */ |
14f9c5c9 AS |
679 | |
680 | /* If the main program is in Ada, return language_ada, otherwise return LANG | |
681 | (the main program is in Ada iif the adainit symbol is found). | |
682 | ||
4c4b4cd2 | 683 | MAIN_PST is not used. */ |
d2e4a39e | 684 | |
14f9c5c9 | 685 | enum language |
d2e4a39e | 686 | ada_update_initial_language (enum language lang, |
4c4b4cd2 | 687 | struct partial_symtab *main_pst) |
14f9c5c9 | 688 | { |
d2e4a39e | 689 | if (lookup_minimal_symbol ("adainit", (const char *) NULL, |
4c4b4cd2 PH |
690 | (struct objfile *) NULL) != NULL) |
691 | return language_ada; | |
14f9c5c9 AS |
692 | |
693 | return lang; | |
694 | } | |
96d887e8 PH |
695 | |
696 | /* If the main procedure is written in Ada, then return its name. | |
697 | The result is good until the next call. Return NULL if the main | |
698 | procedure doesn't appear to be in Ada. */ | |
699 | ||
700 | char * | |
701 | ada_main_name (void) | |
702 | { | |
703 | struct minimal_symbol *msym; | |
704 | CORE_ADDR main_program_name_addr; | |
705 | static char main_program_name[1024]; | |
6c038f32 | 706 | |
96d887e8 PH |
707 | /* For Ada, the name of the main procedure is stored in a specific |
708 | string constant, generated by the binder. Look for that symbol, | |
709 | extract its address, and then read that string. If we didn't find | |
710 | that string, then most probably the main procedure is not written | |
711 | in Ada. */ | |
712 | msym = lookup_minimal_symbol (ADA_MAIN_PROGRAM_SYMBOL_NAME, NULL, NULL); | |
713 | ||
714 | if (msym != NULL) | |
715 | { | |
716 | main_program_name_addr = SYMBOL_VALUE_ADDRESS (msym); | |
717 | if (main_program_name_addr == 0) | |
323e0a4a | 718 | error (_("Invalid address for Ada main program name.")); |
96d887e8 PH |
719 | |
720 | extract_string (main_program_name_addr, main_program_name); | |
721 | return main_program_name; | |
722 | } | |
723 | ||
724 | /* The main procedure doesn't seem to be in Ada. */ | |
725 | return NULL; | |
726 | } | |
14f9c5c9 | 727 | \f |
4c4b4cd2 | 728 | /* Symbols */ |
d2e4a39e | 729 | |
4c4b4cd2 PH |
730 | /* Table of Ada operators and their GNAT-encoded names. Last entry is pair |
731 | of NULLs. */ | |
14f9c5c9 | 732 | |
d2e4a39e AS |
733 | const struct ada_opname_map ada_opname_table[] = { |
734 | {"Oadd", "\"+\"", BINOP_ADD}, | |
735 | {"Osubtract", "\"-\"", BINOP_SUB}, | |
736 | {"Omultiply", "\"*\"", BINOP_MUL}, | |
737 | {"Odivide", "\"/\"", BINOP_DIV}, | |
738 | {"Omod", "\"mod\"", BINOP_MOD}, | |
739 | {"Orem", "\"rem\"", BINOP_REM}, | |
740 | {"Oexpon", "\"**\"", BINOP_EXP}, | |
741 | {"Olt", "\"<\"", BINOP_LESS}, | |
742 | {"Ole", "\"<=\"", BINOP_LEQ}, | |
743 | {"Ogt", "\">\"", BINOP_GTR}, | |
744 | {"Oge", "\">=\"", BINOP_GEQ}, | |
745 | {"Oeq", "\"=\"", BINOP_EQUAL}, | |
746 | {"One", "\"/=\"", BINOP_NOTEQUAL}, | |
747 | {"Oand", "\"and\"", BINOP_BITWISE_AND}, | |
748 | {"Oor", "\"or\"", BINOP_BITWISE_IOR}, | |
749 | {"Oxor", "\"xor\"", BINOP_BITWISE_XOR}, | |
750 | {"Oconcat", "\"&\"", BINOP_CONCAT}, | |
751 | {"Oabs", "\"abs\"", UNOP_ABS}, | |
752 | {"Onot", "\"not\"", UNOP_LOGICAL_NOT}, | |
753 | {"Oadd", "\"+\"", UNOP_PLUS}, | |
754 | {"Osubtract", "\"-\"", UNOP_NEG}, | |
755 | {NULL, NULL} | |
14f9c5c9 AS |
756 | }; |
757 | ||
4c4b4cd2 PH |
758 | /* Return non-zero if STR should be suppressed in info listings. */ |
759 | ||
14f9c5c9 | 760 | static int |
d2e4a39e | 761 | is_suppressed_name (const char *str) |
14f9c5c9 | 762 | { |
4c4b4cd2 | 763 | if (strncmp (str, "_ada_", 5) == 0) |
14f9c5c9 AS |
764 | str += 5; |
765 | if (str[0] == '_' || str[0] == '\000') | |
766 | return 1; | |
767 | else | |
768 | { | |
d2e4a39e AS |
769 | const char *p; |
770 | const char *suffix = strstr (str, "___"); | |
14f9c5c9 | 771 | if (suffix != NULL && suffix[3] != 'X') |
4c4b4cd2 | 772 | return 1; |
14f9c5c9 | 773 | if (suffix == NULL) |
4c4b4cd2 | 774 | suffix = str + strlen (str); |
d2e4a39e | 775 | for (p = suffix - 1; p != str; p -= 1) |
4c4b4cd2 PH |
776 | if (isupper (*p)) |
777 | { | |
778 | int i; | |
779 | if (p[0] == 'X' && p[-1] != '_') | |
780 | goto OK; | |
781 | if (*p != 'O') | |
782 | return 1; | |
783 | for (i = 0; ada_opname_table[i].encoded != NULL; i += 1) | |
784 | if (strncmp (ada_opname_table[i].encoded, p, | |
785 | strlen (ada_opname_table[i].encoded)) == 0) | |
786 | goto OK; | |
787 | return 1; | |
788 | OK:; | |
789 | } | |
14f9c5c9 AS |
790 | return 0; |
791 | } | |
792 | } | |
793 | ||
4c4b4cd2 PH |
794 | /* The "encoded" form of DECODED, according to GNAT conventions. |
795 | The result is valid until the next call to ada_encode. */ | |
796 | ||
14f9c5c9 | 797 | char * |
4c4b4cd2 | 798 | ada_encode (const char *decoded) |
14f9c5c9 | 799 | { |
4c4b4cd2 PH |
800 | static char *encoding_buffer = NULL; |
801 | static size_t encoding_buffer_size = 0; | |
d2e4a39e | 802 | const char *p; |
14f9c5c9 | 803 | int k; |
d2e4a39e | 804 | |
4c4b4cd2 | 805 | if (decoded == NULL) |
14f9c5c9 AS |
806 | return NULL; |
807 | ||
4c4b4cd2 PH |
808 | GROW_VECT (encoding_buffer, encoding_buffer_size, |
809 | 2 * strlen (decoded) + 10); | |
14f9c5c9 AS |
810 | |
811 | k = 0; | |
4c4b4cd2 | 812 | for (p = decoded; *p != '\0'; p += 1) |
14f9c5c9 | 813 | { |
4c4b4cd2 PH |
814 | if (!ADA_RETAIN_DOTS && *p == '.') |
815 | { | |
816 | encoding_buffer[k] = encoding_buffer[k + 1] = '_'; | |
817 | k += 2; | |
818 | } | |
14f9c5c9 | 819 | else if (*p == '"') |
4c4b4cd2 PH |
820 | { |
821 | const struct ada_opname_map *mapping; | |
822 | ||
823 | for (mapping = ada_opname_table; | |
1265e4aa JB |
824 | mapping->encoded != NULL |
825 | && strncmp (mapping->decoded, p, | |
826 | strlen (mapping->decoded)) != 0; mapping += 1) | |
4c4b4cd2 PH |
827 | ; |
828 | if (mapping->encoded == NULL) | |
323e0a4a | 829 | error (_("invalid Ada operator name: %s"), p); |
4c4b4cd2 PH |
830 | strcpy (encoding_buffer + k, mapping->encoded); |
831 | k += strlen (mapping->encoded); | |
832 | break; | |
833 | } | |
d2e4a39e | 834 | else |
4c4b4cd2 PH |
835 | { |
836 | encoding_buffer[k] = *p; | |
837 | k += 1; | |
838 | } | |
14f9c5c9 AS |
839 | } |
840 | ||
4c4b4cd2 PH |
841 | encoding_buffer[k] = '\0'; |
842 | return encoding_buffer; | |
14f9c5c9 AS |
843 | } |
844 | ||
845 | /* Return NAME folded to lower case, or, if surrounded by single | |
4c4b4cd2 PH |
846 | quotes, unfolded, but with the quotes stripped away. Result good |
847 | to next call. */ | |
848 | ||
d2e4a39e AS |
849 | char * |
850 | ada_fold_name (const char *name) | |
14f9c5c9 | 851 | { |
d2e4a39e | 852 | static char *fold_buffer = NULL; |
14f9c5c9 AS |
853 | static size_t fold_buffer_size = 0; |
854 | ||
855 | int len = strlen (name); | |
d2e4a39e | 856 | GROW_VECT (fold_buffer, fold_buffer_size, len + 1); |
14f9c5c9 AS |
857 | |
858 | if (name[0] == '\'') | |
859 | { | |
d2e4a39e AS |
860 | strncpy (fold_buffer, name + 1, len - 2); |
861 | fold_buffer[len - 2] = '\000'; | |
14f9c5c9 AS |
862 | } |
863 | else | |
864 | { | |
865 | int i; | |
866 | for (i = 0; i <= len; i += 1) | |
4c4b4cd2 | 867 | fold_buffer[i] = tolower (name[i]); |
14f9c5c9 AS |
868 | } |
869 | ||
870 | return fold_buffer; | |
871 | } | |
872 | ||
529cad9c PH |
873 | /* Return nonzero if C is either a digit or a lowercase alphabet character. */ |
874 | ||
875 | static int | |
876 | is_lower_alphanum (const char c) | |
877 | { | |
878 | return (isdigit (c) || (isalpha (c) && islower (c))); | |
879 | } | |
880 | ||
29480c32 JB |
881 | /* Remove either of these suffixes: |
882 | . .{DIGIT}+ | |
883 | . ${DIGIT}+ | |
884 | . ___{DIGIT}+ | |
885 | . __{DIGIT}+. | |
886 | These are suffixes introduced by the compiler for entities such as | |
887 | nested subprogram for instance, in order to avoid name clashes. | |
888 | They do not serve any purpose for the debugger. */ | |
889 | ||
890 | static void | |
891 | ada_remove_trailing_digits (const char *encoded, int *len) | |
892 | { | |
893 | if (*len > 1 && isdigit (encoded[*len - 1])) | |
894 | { | |
895 | int i = *len - 2; | |
896 | while (i > 0 && isdigit (encoded[i])) | |
897 | i--; | |
898 | if (i >= 0 && encoded[i] == '.') | |
899 | *len = i; | |
900 | else if (i >= 0 && encoded[i] == '$') | |
901 | *len = i; | |
902 | else if (i >= 2 && strncmp (encoded + i - 2, "___", 3) == 0) | |
903 | *len = i - 2; | |
904 | else if (i >= 1 && strncmp (encoded + i - 1, "__", 2) == 0) | |
905 | *len = i - 1; | |
906 | } | |
907 | } | |
908 | ||
909 | /* Remove the suffix introduced by the compiler for protected object | |
910 | subprograms. */ | |
911 | ||
912 | static void | |
913 | ada_remove_po_subprogram_suffix (const char *encoded, int *len) | |
914 | { | |
915 | /* Remove trailing N. */ | |
916 | ||
917 | /* Protected entry subprograms are broken into two | |
918 | separate subprograms: The first one is unprotected, and has | |
919 | a 'N' suffix; the second is the protected version, and has | |
920 | the 'P' suffix. The second calls the first one after handling | |
921 | the protection. Since the P subprograms are internally generated, | |
922 | we leave these names undecoded, giving the user a clue that this | |
923 | entity is internal. */ | |
924 | ||
925 | if (*len > 1 | |
926 | && encoded[*len - 1] == 'N' | |
927 | && (isdigit (encoded[*len - 2]) || islower (encoded[*len - 2]))) | |
928 | *len = *len - 1; | |
929 | } | |
930 | ||
931 | /* If ENCODED follows the GNAT entity encoding conventions, then return | |
932 | the decoded form of ENCODED. Otherwise, return "<%s>" where "%s" is | |
933 | replaced by ENCODED. | |
14f9c5c9 | 934 | |
4c4b4cd2 | 935 | The resulting string is valid until the next call of ada_decode. |
29480c32 | 936 | If the string is unchanged by decoding, the original string pointer |
4c4b4cd2 PH |
937 | is returned. */ |
938 | ||
939 | const char * | |
940 | ada_decode (const char *encoded) | |
14f9c5c9 AS |
941 | { |
942 | int i, j; | |
943 | int len0; | |
d2e4a39e | 944 | const char *p; |
4c4b4cd2 | 945 | char *decoded; |
14f9c5c9 | 946 | int at_start_name; |
4c4b4cd2 PH |
947 | static char *decoding_buffer = NULL; |
948 | static size_t decoding_buffer_size = 0; | |
d2e4a39e | 949 | |
29480c32 JB |
950 | /* The name of the Ada main procedure starts with "_ada_". |
951 | This prefix is not part of the decoded name, so skip this part | |
952 | if we see this prefix. */ | |
4c4b4cd2 PH |
953 | if (strncmp (encoded, "_ada_", 5) == 0) |
954 | encoded += 5; | |
14f9c5c9 | 955 | |
29480c32 JB |
956 | /* If the name starts with '_', then it is not a properly encoded |
957 | name, so do not attempt to decode it. Similarly, if the name | |
958 | starts with '<', the name should not be decoded. */ | |
4c4b4cd2 | 959 | if (encoded[0] == '_' || encoded[0] == '<') |
14f9c5c9 AS |
960 | goto Suppress; |
961 | ||
4c4b4cd2 | 962 | len0 = strlen (encoded); |
4c4b4cd2 | 963 | |
29480c32 JB |
964 | ada_remove_trailing_digits (encoded, &len0); |
965 | ada_remove_po_subprogram_suffix (encoded, &len0); | |
529cad9c | 966 | |
4c4b4cd2 PH |
967 | /* Remove the ___X.* suffix if present. Do not forget to verify that |
968 | the suffix is located before the current "end" of ENCODED. We want | |
969 | to avoid re-matching parts of ENCODED that have previously been | |
970 | marked as discarded (by decrementing LEN0). */ | |
971 | p = strstr (encoded, "___"); | |
972 | if (p != NULL && p - encoded < len0 - 3) | |
14f9c5c9 AS |
973 | { |
974 | if (p[3] == 'X') | |
4c4b4cd2 | 975 | len0 = p - encoded; |
14f9c5c9 | 976 | else |
4c4b4cd2 | 977 | goto Suppress; |
14f9c5c9 | 978 | } |
4c4b4cd2 | 979 | |
29480c32 JB |
980 | /* Remove any trailing TKB suffix. It tells us that this symbol |
981 | is for the body of a task, but that information does not actually | |
982 | appear in the decoded name. */ | |
983 | ||
4c4b4cd2 | 984 | if (len0 > 3 && strncmp (encoded + len0 - 3, "TKB", 3) == 0) |
14f9c5c9 | 985 | len0 -= 3; |
76a01679 | 986 | |
29480c32 JB |
987 | /* Remove trailing "B" suffixes. */ |
988 | /* FIXME: brobecker/2006-04-19: Not sure what this are used for... */ | |
989 | ||
4c4b4cd2 | 990 | if (len0 > 1 && strncmp (encoded + len0 - 1, "B", 1) == 0) |
14f9c5c9 AS |
991 | len0 -= 1; |
992 | ||
4c4b4cd2 | 993 | /* Make decoded big enough for possible expansion by operator name. */ |
29480c32 | 994 | |
4c4b4cd2 PH |
995 | GROW_VECT (decoding_buffer, decoding_buffer_size, 2 * len0 + 1); |
996 | decoded = decoding_buffer; | |
14f9c5c9 | 997 | |
29480c32 JB |
998 | /* Remove trailing __{digit}+ or trailing ${digit}+. */ |
999 | ||
4c4b4cd2 | 1000 | if (len0 > 1 && isdigit (encoded[len0 - 1])) |
d2e4a39e | 1001 | { |
4c4b4cd2 PH |
1002 | i = len0 - 2; |
1003 | while ((i >= 0 && isdigit (encoded[i])) | |
1004 | || (i >= 1 && encoded[i] == '_' && isdigit (encoded[i - 1]))) | |
1005 | i -= 1; | |
1006 | if (i > 1 && encoded[i] == '_' && encoded[i - 1] == '_') | |
1007 | len0 = i - 1; | |
1008 | else if (encoded[i] == '$') | |
1009 | len0 = i; | |
d2e4a39e | 1010 | } |
14f9c5c9 | 1011 | |
29480c32 JB |
1012 | /* The first few characters that are not alphabetic are not part |
1013 | of any encoding we use, so we can copy them over verbatim. */ | |
1014 | ||
4c4b4cd2 PH |
1015 | for (i = 0, j = 0; i < len0 && !isalpha (encoded[i]); i += 1, j += 1) |
1016 | decoded[j] = encoded[i]; | |
14f9c5c9 AS |
1017 | |
1018 | at_start_name = 1; | |
1019 | while (i < len0) | |
1020 | { | |
29480c32 | 1021 | /* Is this a symbol function? */ |
4c4b4cd2 PH |
1022 | if (at_start_name && encoded[i] == 'O') |
1023 | { | |
1024 | int k; | |
1025 | for (k = 0; ada_opname_table[k].encoded != NULL; k += 1) | |
1026 | { | |
1027 | int op_len = strlen (ada_opname_table[k].encoded); | |
06d5cf63 JB |
1028 | if ((strncmp (ada_opname_table[k].encoded + 1, encoded + i + 1, |
1029 | op_len - 1) == 0) | |
1030 | && !isalnum (encoded[i + op_len])) | |
4c4b4cd2 PH |
1031 | { |
1032 | strcpy (decoded + j, ada_opname_table[k].decoded); | |
1033 | at_start_name = 0; | |
1034 | i += op_len; | |
1035 | j += strlen (ada_opname_table[k].decoded); | |
1036 | break; | |
1037 | } | |
1038 | } | |
1039 | if (ada_opname_table[k].encoded != NULL) | |
1040 | continue; | |
1041 | } | |
14f9c5c9 AS |
1042 | at_start_name = 0; |
1043 | ||
529cad9c PH |
1044 | /* Replace "TK__" with "__", which will eventually be translated |
1045 | into "." (just below). */ | |
1046 | ||
4c4b4cd2 PH |
1047 | if (i < len0 - 4 && strncmp (encoded + i, "TK__", 4) == 0) |
1048 | i += 2; | |
529cad9c | 1049 | |
29480c32 JB |
1050 | /* Replace "__B_{DIGITS}+__" sequences by "__", which will eventually |
1051 | be translated into "." (just below). These are internal names | |
1052 | generated for anonymous blocks inside which our symbol is nested. */ | |
1053 | ||
1054 | if (len0 - i > 5 && encoded [i] == '_' && encoded [i+1] == '_' | |
1055 | && encoded [i+2] == 'B' && encoded [i+3] == '_' | |
1056 | && isdigit (encoded [i+4])) | |
1057 | { | |
1058 | int k = i + 5; | |
1059 | ||
1060 | while (k < len0 && isdigit (encoded[k])) | |
1061 | k++; /* Skip any extra digit. */ | |
1062 | ||
1063 | /* Double-check that the "__B_{DIGITS}+" sequence we found | |
1064 | is indeed followed by "__". */ | |
1065 | if (len0 - k > 2 && encoded [k] == '_' && encoded [k+1] == '_') | |
1066 | i = k; | |
1067 | } | |
1068 | ||
529cad9c PH |
1069 | /* Remove _E{DIGITS}+[sb] */ |
1070 | ||
1071 | /* Just as for protected object subprograms, there are 2 categories | |
1072 | of subprograms created by the compiler for each entry. The first | |
1073 | one implements the actual entry code, and has a suffix following | |
1074 | the convention above; the second one implements the barrier and | |
1075 | uses the same convention as above, except that the 'E' is replaced | |
1076 | by a 'B'. | |
1077 | ||
1078 | Just as above, we do not decode the name of barrier functions | |
1079 | to give the user a clue that the code he is debugging has been | |
1080 | internally generated. */ | |
1081 | ||
1082 | if (len0 - i > 3 && encoded [i] == '_' && encoded[i+1] == 'E' | |
1083 | && isdigit (encoded[i+2])) | |
1084 | { | |
1085 | int k = i + 3; | |
1086 | ||
1087 | while (k < len0 && isdigit (encoded[k])) | |
1088 | k++; | |
1089 | ||
1090 | if (k < len0 | |
1091 | && (encoded[k] == 'b' || encoded[k] == 's')) | |
1092 | { | |
1093 | k++; | |
1094 | /* Just as an extra precaution, make sure that if this | |
1095 | suffix is followed by anything else, it is a '_'. | |
1096 | Otherwise, we matched this sequence by accident. */ | |
1097 | if (k == len0 | |
1098 | || (k < len0 && encoded[k] == '_')) | |
1099 | i = k; | |
1100 | } | |
1101 | } | |
1102 | ||
1103 | /* Remove trailing "N" in [a-z0-9]+N__. The N is added by | |
1104 | the GNAT front-end in protected object subprograms. */ | |
1105 | ||
1106 | if (i < len0 + 3 | |
1107 | && encoded[i] == 'N' && encoded[i+1] == '_' && encoded[i+2] == '_') | |
1108 | { | |
1109 | /* Backtrack a bit up until we reach either the begining of | |
1110 | the encoded name, or "__". Make sure that we only find | |
1111 | digits or lowercase characters. */ | |
1112 | const char *ptr = encoded + i - 1; | |
1113 | ||
1114 | while (ptr >= encoded && is_lower_alphanum (ptr[0])) | |
1115 | ptr--; | |
1116 | if (ptr < encoded | |
1117 | || (ptr > encoded && ptr[0] == '_' && ptr[-1] == '_')) | |
1118 | i++; | |
1119 | } | |
1120 | ||
4c4b4cd2 PH |
1121 | if (encoded[i] == 'X' && i != 0 && isalnum (encoded[i - 1])) |
1122 | { | |
29480c32 JB |
1123 | /* This is a X[bn]* sequence not separated from the previous |
1124 | part of the name with a non-alpha-numeric character (in other | |
1125 | words, immediately following an alpha-numeric character), then | |
1126 | verify that it is placed at the end of the encoded name. If | |
1127 | not, then the encoding is not valid and we should abort the | |
1128 | decoding. Otherwise, just skip it, it is used in body-nested | |
1129 | package names. */ | |
4c4b4cd2 PH |
1130 | do |
1131 | i += 1; | |
1132 | while (i < len0 && (encoded[i] == 'b' || encoded[i] == 'n')); | |
1133 | if (i < len0) | |
1134 | goto Suppress; | |
1135 | } | |
1136 | else if (!ADA_RETAIN_DOTS | |
1137 | && i < len0 - 2 && encoded[i] == '_' && encoded[i + 1] == '_') | |
1138 | { | |
29480c32 | 1139 | /* Replace '__' by '.'. */ |
4c4b4cd2 PH |
1140 | decoded[j] = '.'; |
1141 | at_start_name = 1; | |
1142 | i += 2; | |
1143 | j += 1; | |
1144 | } | |
14f9c5c9 | 1145 | else |
4c4b4cd2 | 1146 | { |
29480c32 JB |
1147 | /* It's a character part of the decoded name, so just copy it |
1148 | over. */ | |
4c4b4cd2 PH |
1149 | decoded[j] = encoded[i]; |
1150 | i += 1; | |
1151 | j += 1; | |
1152 | } | |
14f9c5c9 | 1153 | } |
4c4b4cd2 | 1154 | decoded[j] = '\000'; |
14f9c5c9 | 1155 | |
29480c32 JB |
1156 | /* Decoded names should never contain any uppercase character. |
1157 | Double-check this, and abort the decoding if we find one. */ | |
1158 | ||
4c4b4cd2 PH |
1159 | for (i = 0; decoded[i] != '\0'; i += 1) |
1160 | if (isupper (decoded[i]) || decoded[i] == ' ') | |
14f9c5c9 AS |
1161 | goto Suppress; |
1162 | ||
4c4b4cd2 PH |
1163 | if (strcmp (decoded, encoded) == 0) |
1164 | return encoded; | |
1165 | else | |
1166 | return decoded; | |
14f9c5c9 AS |
1167 | |
1168 | Suppress: | |
4c4b4cd2 PH |
1169 | GROW_VECT (decoding_buffer, decoding_buffer_size, strlen (encoded) + 3); |
1170 | decoded = decoding_buffer; | |
1171 | if (encoded[0] == '<') | |
1172 | strcpy (decoded, encoded); | |
14f9c5c9 | 1173 | else |
4c4b4cd2 PH |
1174 | sprintf (decoded, "<%s>", encoded); |
1175 | return decoded; | |
1176 | ||
1177 | } | |
1178 | ||
1179 | /* Table for keeping permanent unique copies of decoded names. Once | |
1180 | allocated, names in this table are never released. While this is a | |
1181 | storage leak, it should not be significant unless there are massive | |
1182 | changes in the set of decoded names in successive versions of a | |
1183 | symbol table loaded during a single session. */ | |
1184 | static struct htab *decoded_names_store; | |
1185 | ||
1186 | /* Returns the decoded name of GSYMBOL, as for ada_decode, caching it | |
1187 | in the language-specific part of GSYMBOL, if it has not been | |
1188 | previously computed. Tries to save the decoded name in the same | |
1189 | obstack as GSYMBOL, if possible, and otherwise on the heap (so that, | |
1190 | in any case, the decoded symbol has a lifetime at least that of | |
1191 | GSYMBOL). | |
1192 | The GSYMBOL parameter is "mutable" in the C++ sense: logically | |
1193 | const, but nevertheless modified to a semantically equivalent form | |
1194 | when a decoded name is cached in it. | |
76a01679 | 1195 | */ |
4c4b4cd2 | 1196 | |
76a01679 JB |
1197 | char * |
1198 | ada_decode_symbol (const struct general_symbol_info *gsymbol) | |
4c4b4cd2 | 1199 | { |
76a01679 | 1200 | char **resultp = |
4c4b4cd2 PH |
1201 | (char **) &gsymbol->language_specific.cplus_specific.demangled_name; |
1202 | if (*resultp == NULL) | |
1203 | { | |
1204 | const char *decoded = ada_decode (gsymbol->name); | |
1205 | if (gsymbol->bfd_section != NULL) | |
76a01679 JB |
1206 | { |
1207 | bfd *obfd = gsymbol->bfd_section->owner; | |
1208 | if (obfd != NULL) | |
1209 | { | |
1210 | struct objfile *objf; | |
1211 | ALL_OBJFILES (objf) | |
1212 | { | |
1213 | if (obfd == objf->obfd) | |
1214 | { | |
1215 | *resultp = obsavestring (decoded, strlen (decoded), | |
1216 | &objf->objfile_obstack); | |
1217 | break; | |
1218 | } | |
1219 | } | |
1220 | } | |
1221 | } | |
4c4b4cd2 | 1222 | /* Sometimes, we can't find a corresponding objfile, in which |
76a01679 JB |
1223 | case, we put the result on the heap. Since we only decode |
1224 | when needed, we hope this usually does not cause a | |
1225 | significant memory leak (FIXME). */ | |
4c4b4cd2 | 1226 | if (*resultp == NULL) |
76a01679 JB |
1227 | { |
1228 | char **slot = (char **) htab_find_slot (decoded_names_store, | |
1229 | decoded, INSERT); | |
1230 | if (*slot == NULL) | |
1231 | *slot = xstrdup (decoded); | |
1232 | *resultp = *slot; | |
1233 | } | |
4c4b4cd2 | 1234 | } |
14f9c5c9 | 1235 | |
4c4b4cd2 PH |
1236 | return *resultp; |
1237 | } | |
76a01679 JB |
1238 | |
1239 | char * | |
1240 | ada_la_decode (const char *encoded, int options) | |
4c4b4cd2 PH |
1241 | { |
1242 | return xstrdup (ada_decode (encoded)); | |
14f9c5c9 AS |
1243 | } |
1244 | ||
1245 | /* Returns non-zero iff SYM_NAME matches NAME, ignoring any trailing | |
4c4b4cd2 PH |
1246 | suffixes that encode debugging information or leading _ada_ on |
1247 | SYM_NAME (see is_name_suffix commentary for the debugging | |
1248 | information that is ignored). If WILD, then NAME need only match a | |
1249 | suffix of SYM_NAME minus the same suffixes. Also returns 0 if | |
1250 | either argument is NULL. */ | |
14f9c5c9 AS |
1251 | |
1252 | int | |
d2e4a39e | 1253 | ada_match_name (const char *sym_name, const char *name, int wild) |
14f9c5c9 AS |
1254 | { |
1255 | if (sym_name == NULL || name == NULL) | |
1256 | return 0; | |
1257 | else if (wild) | |
1258 | return wild_match (name, strlen (name), sym_name); | |
d2e4a39e AS |
1259 | else |
1260 | { | |
1261 | int len_name = strlen (name); | |
4c4b4cd2 PH |
1262 | return (strncmp (sym_name, name, len_name) == 0 |
1263 | && is_name_suffix (sym_name + len_name)) | |
1264 | || (strncmp (sym_name, "_ada_", 5) == 0 | |
1265 | && strncmp (sym_name + 5, name, len_name) == 0 | |
1266 | && is_name_suffix (sym_name + len_name + 5)); | |
d2e4a39e | 1267 | } |
14f9c5c9 AS |
1268 | } |
1269 | ||
4c4b4cd2 PH |
1270 | /* True (non-zero) iff, in Ada mode, the symbol SYM should be |
1271 | suppressed in info listings. */ | |
14f9c5c9 AS |
1272 | |
1273 | int | |
ebf56fd3 | 1274 | ada_suppress_symbol_printing (struct symbol *sym) |
14f9c5c9 | 1275 | { |
176620f1 | 1276 | if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN) |
14f9c5c9 | 1277 | return 1; |
d2e4a39e | 1278 | else |
4c4b4cd2 | 1279 | return is_suppressed_name (SYMBOL_LINKAGE_NAME (sym)); |
14f9c5c9 | 1280 | } |
14f9c5c9 | 1281 | \f |
d2e4a39e | 1282 | |
4c4b4cd2 | 1283 | /* Arrays */ |
14f9c5c9 | 1284 | |
4c4b4cd2 | 1285 | /* Names of MAX_ADA_DIMENS bounds in P_BOUNDS fields of array descriptors. */ |
14f9c5c9 | 1286 | |
d2e4a39e AS |
1287 | static char *bound_name[] = { |
1288 | "LB0", "UB0", "LB1", "UB1", "LB2", "UB2", "LB3", "UB3", | |
14f9c5c9 AS |
1289 | "LB4", "UB4", "LB5", "UB5", "LB6", "UB6", "LB7", "UB7" |
1290 | }; | |
1291 | ||
1292 | /* Maximum number of array dimensions we are prepared to handle. */ | |
1293 | ||
4c4b4cd2 | 1294 | #define MAX_ADA_DIMENS (sizeof(bound_name) / (2*sizeof(char *))) |
14f9c5c9 | 1295 | |
4c4b4cd2 | 1296 | /* Like modify_field, but allows bitpos > wordlength. */ |
14f9c5c9 AS |
1297 | |
1298 | static void | |
ebf56fd3 | 1299 | modify_general_field (char *addr, LONGEST fieldval, int bitpos, int bitsize) |
14f9c5c9 | 1300 | { |
4c4b4cd2 | 1301 | modify_field (addr + bitpos / 8, fieldval, bitpos % 8, bitsize); |
14f9c5c9 AS |
1302 | } |
1303 | ||
1304 | ||
4c4b4cd2 PH |
1305 | /* The desc_* routines return primitive portions of array descriptors |
1306 | (fat pointers). */ | |
14f9c5c9 AS |
1307 | |
1308 | /* The descriptor or array type, if any, indicated by TYPE; removes | |
4c4b4cd2 PH |
1309 | level of indirection, if needed. */ |
1310 | ||
d2e4a39e AS |
1311 | static struct type * |
1312 | desc_base_type (struct type *type) | |
14f9c5c9 AS |
1313 | { |
1314 | if (type == NULL) | |
1315 | return NULL; | |
61ee279c | 1316 | type = ada_check_typedef (type); |
1265e4aa JB |
1317 | if (type != NULL |
1318 | && (TYPE_CODE (type) == TYPE_CODE_PTR | |
1319 | || TYPE_CODE (type) == TYPE_CODE_REF)) | |
61ee279c | 1320 | return ada_check_typedef (TYPE_TARGET_TYPE (type)); |
14f9c5c9 AS |
1321 | else |
1322 | return type; | |
1323 | } | |
1324 | ||
4c4b4cd2 PH |
1325 | /* True iff TYPE indicates a "thin" array pointer type. */ |
1326 | ||
14f9c5c9 | 1327 | static int |
d2e4a39e | 1328 | is_thin_pntr (struct type *type) |
14f9c5c9 | 1329 | { |
d2e4a39e | 1330 | return |
14f9c5c9 AS |
1331 | is_suffix (ada_type_name (desc_base_type (type)), "___XUT") |
1332 | || is_suffix (ada_type_name (desc_base_type (type)), "___XUT___XVE"); | |
1333 | } | |
1334 | ||
4c4b4cd2 PH |
1335 | /* The descriptor type for thin pointer type TYPE. */ |
1336 | ||
d2e4a39e AS |
1337 | static struct type * |
1338 | thin_descriptor_type (struct type *type) | |
14f9c5c9 | 1339 | { |
d2e4a39e | 1340 | struct type *base_type = desc_base_type (type); |
14f9c5c9 AS |
1341 | if (base_type == NULL) |
1342 | return NULL; | |
1343 | if (is_suffix (ada_type_name (base_type), "___XVE")) | |
1344 | return base_type; | |
d2e4a39e | 1345 | else |
14f9c5c9 | 1346 | { |
d2e4a39e | 1347 | struct type *alt_type = ada_find_parallel_type (base_type, "___XVE"); |
14f9c5c9 | 1348 | if (alt_type == NULL) |
4c4b4cd2 | 1349 | return base_type; |
14f9c5c9 | 1350 | else |
4c4b4cd2 | 1351 | return alt_type; |
14f9c5c9 AS |
1352 | } |
1353 | } | |
1354 | ||
4c4b4cd2 PH |
1355 | /* A pointer to the array data for thin-pointer value VAL. */ |
1356 | ||
d2e4a39e AS |
1357 | static struct value * |
1358 | thin_data_pntr (struct value *val) | |
14f9c5c9 | 1359 | { |
df407dfe | 1360 | struct type *type = value_type (val); |
14f9c5c9 | 1361 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
d2e4a39e | 1362 | return value_cast (desc_data_type (thin_descriptor_type (type)), |
4c4b4cd2 | 1363 | value_copy (val)); |
d2e4a39e | 1364 | else |
14f9c5c9 | 1365 | return value_from_longest (desc_data_type (thin_descriptor_type (type)), |
df407dfe | 1366 | VALUE_ADDRESS (val) + value_offset (val)); |
14f9c5c9 AS |
1367 | } |
1368 | ||
4c4b4cd2 PH |
1369 | /* True iff TYPE indicates a "thick" array pointer type. */ |
1370 | ||
14f9c5c9 | 1371 | static int |
d2e4a39e | 1372 | is_thick_pntr (struct type *type) |
14f9c5c9 AS |
1373 | { |
1374 | type = desc_base_type (type); | |
1375 | return (type != NULL && TYPE_CODE (type) == TYPE_CODE_STRUCT | |
4c4b4cd2 | 1376 | && lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL); |
14f9c5c9 AS |
1377 | } |
1378 | ||
4c4b4cd2 PH |
1379 | /* If TYPE is the type of an array descriptor (fat or thin pointer) or a |
1380 | pointer to one, the type of its bounds data; otherwise, NULL. */ | |
76a01679 | 1381 | |
d2e4a39e AS |
1382 | static struct type * |
1383 | desc_bounds_type (struct type *type) | |
14f9c5c9 | 1384 | { |
d2e4a39e | 1385 | struct type *r; |
14f9c5c9 AS |
1386 | |
1387 | type = desc_base_type (type); | |
1388 | ||
1389 | if (type == NULL) | |
1390 | return NULL; | |
1391 | else if (is_thin_pntr (type)) | |
1392 | { | |
1393 | type = thin_descriptor_type (type); | |
1394 | if (type == NULL) | |
4c4b4cd2 | 1395 | return NULL; |
14f9c5c9 AS |
1396 | r = lookup_struct_elt_type (type, "BOUNDS", 1); |
1397 | if (r != NULL) | |
61ee279c | 1398 | return ada_check_typedef (r); |
14f9c5c9 AS |
1399 | } |
1400 | else if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
1401 | { | |
1402 | r = lookup_struct_elt_type (type, "P_BOUNDS", 1); | |
1403 | if (r != NULL) | |
61ee279c | 1404 | return ada_check_typedef (TYPE_TARGET_TYPE (ada_check_typedef (r))); |
14f9c5c9 AS |
1405 | } |
1406 | return NULL; | |
1407 | } | |
1408 | ||
1409 | /* If ARR is an array descriptor (fat or thin pointer), or pointer to | |
4c4b4cd2 PH |
1410 | one, a pointer to its bounds data. Otherwise NULL. */ |
1411 | ||
d2e4a39e AS |
1412 | static struct value * |
1413 | desc_bounds (struct value *arr) | |
14f9c5c9 | 1414 | { |
df407dfe | 1415 | struct type *type = ada_check_typedef (value_type (arr)); |
d2e4a39e | 1416 | if (is_thin_pntr (type)) |
14f9c5c9 | 1417 | { |
d2e4a39e | 1418 | struct type *bounds_type = |
4c4b4cd2 | 1419 | desc_bounds_type (thin_descriptor_type (type)); |
14f9c5c9 AS |
1420 | LONGEST addr; |
1421 | ||
4cdfadb1 | 1422 | if (bounds_type == NULL) |
323e0a4a | 1423 | error (_("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1424 | |
1425 | /* NOTE: The following calculation is not really kosher, but | |
d2e4a39e | 1426 | since desc_type is an XVE-encoded type (and shouldn't be), |
4c4b4cd2 | 1427 | the correct calculation is a real pain. FIXME (and fix GCC). */ |
14f9c5c9 | 1428 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
4c4b4cd2 | 1429 | addr = value_as_long (arr); |
d2e4a39e | 1430 | else |
df407dfe | 1431 | addr = VALUE_ADDRESS (arr) + value_offset (arr); |
14f9c5c9 | 1432 | |
d2e4a39e | 1433 | return |
4c4b4cd2 PH |
1434 | value_from_longest (lookup_pointer_type (bounds_type), |
1435 | addr - TYPE_LENGTH (bounds_type)); | |
14f9c5c9 AS |
1436 | } |
1437 | ||
1438 | else if (is_thick_pntr (type)) | |
d2e4a39e | 1439 | return value_struct_elt (&arr, NULL, "P_BOUNDS", NULL, |
323e0a4a | 1440 | _("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1441 | else |
1442 | return NULL; | |
1443 | } | |
1444 | ||
4c4b4cd2 PH |
1445 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit |
1446 | position of the field containing the address of the bounds data. */ | |
1447 | ||
14f9c5c9 | 1448 | static int |
d2e4a39e | 1449 | fat_pntr_bounds_bitpos (struct type *type) |
14f9c5c9 AS |
1450 | { |
1451 | return TYPE_FIELD_BITPOS (desc_base_type (type), 1); | |
1452 | } | |
1453 | ||
1454 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1455 | size of the field containing the address of the bounds data. */ |
1456 | ||
14f9c5c9 | 1457 | static int |
d2e4a39e | 1458 | fat_pntr_bounds_bitsize (struct type *type) |
14f9c5c9 AS |
1459 | { |
1460 | type = desc_base_type (type); | |
1461 | ||
d2e4a39e | 1462 | if (TYPE_FIELD_BITSIZE (type, 1) > 0) |
14f9c5c9 AS |
1463 | return TYPE_FIELD_BITSIZE (type, 1); |
1464 | else | |
61ee279c | 1465 | return 8 * TYPE_LENGTH (ada_check_typedef (TYPE_FIELD_TYPE (type, 1))); |
14f9c5c9 AS |
1466 | } |
1467 | ||
4c4b4cd2 | 1468 | /* If TYPE is the type of an array descriptor (fat or thin pointer) or a |
14f9c5c9 | 1469 | pointer to one, the type of its array data (a |
4c4b4cd2 PH |
1470 | pointer-to-array-with-no-bounds type); otherwise, NULL. Use |
1471 | ada_type_of_array to get an array type with bounds data. */ | |
1472 | ||
d2e4a39e AS |
1473 | static struct type * |
1474 | desc_data_type (struct type *type) | |
14f9c5c9 AS |
1475 | { |
1476 | type = desc_base_type (type); | |
1477 | ||
4c4b4cd2 | 1478 | /* NOTE: The following is bogus; see comment in desc_bounds. */ |
14f9c5c9 | 1479 | if (is_thin_pntr (type)) |
d2e4a39e AS |
1480 | return lookup_pointer_type |
1481 | (desc_base_type (TYPE_FIELD_TYPE (thin_descriptor_type (type), 1))); | |
14f9c5c9 AS |
1482 | else if (is_thick_pntr (type)) |
1483 | return lookup_struct_elt_type (type, "P_ARRAY", 1); | |
1484 | else | |
1485 | return NULL; | |
1486 | } | |
1487 | ||
1488 | /* If ARR is an array descriptor (fat or thin pointer), a pointer to | |
1489 | its array data. */ | |
4c4b4cd2 | 1490 | |
d2e4a39e AS |
1491 | static struct value * |
1492 | desc_data (struct value *arr) | |
14f9c5c9 | 1493 | { |
df407dfe | 1494 | struct type *type = value_type (arr); |
14f9c5c9 AS |
1495 | if (is_thin_pntr (type)) |
1496 | return thin_data_pntr (arr); | |
1497 | else if (is_thick_pntr (type)) | |
d2e4a39e | 1498 | return value_struct_elt (&arr, NULL, "P_ARRAY", NULL, |
323e0a4a | 1499 | _("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1500 | else |
1501 | return NULL; | |
1502 | } | |
1503 | ||
1504 | ||
1505 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1506 | position of the field containing the address of the data. */ |
1507 | ||
14f9c5c9 | 1508 | static int |
d2e4a39e | 1509 | fat_pntr_data_bitpos (struct type *type) |
14f9c5c9 AS |
1510 | { |
1511 | return TYPE_FIELD_BITPOS (desc_base_type (type), 0); | |
1512 | } | |
1513 | ||
1514 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1515 | size of the field containing the address of the data. */ |
1516 | ||
14f9c5c9 | 1517 | static int |
d2e4a39e | 1518 | fat_pntr_data_bitsize (struct type *type) |
14f9c5c9 AS |
1519 | { |
1520 | type = desc_base_type (type); | |
1521 | ||
1522 | if (TYPE_FIELD_BITSIZE (type, 0) > 0) | |
1523 | return TYPE_FIELD_BITSIZE (type, 0); | |
d2e4a39e | 1524 | else |
14f9c5c9 AS |
1525 | return TARGET_CHAR_BIT * TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)); |
1526 | } | |
1527 | ||
4c4b4cd2 | 1528 | /* If BOUNDS is an array-bounds structure (or pointer to one), return |
14f9c5c9 | 1529 | the Ith lower bound stored in it, if WHICH is 0, and the Ith upper |
4c4b4cd2 PH |
1530 | bound, if WHICH is 1. The first bound is I=1. */ |
1531 | ||
d2e4a39e AS |
1532 | static struct value * |
1533 | desc_one_bound (struct value *bounds, int i, int which) | |
14f9c5c9 | 1534 | { |
d2e4a39e | 1535 | return value_struct_elt (&bounds, NULL, bound_name[2 * i + which - 2], NULL, |
323e0a4a | 1536 | _("Bad GNAT array descriptor bounds")); |
14f9c5c9 AS |
1537 | } |
1538 | ||
1539 | /* If BOUNDS is an array-bounds structure type, return the bit position | |
1540 | of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper | |
4c4b4cd2 PH |
1541 | bound, if WHICH is 1. The first bound is I=1. */ |
1542 | ||
14f9c5c9 | 1543 | static int |
d2e4a39e | 1544 | desc_bound_bitpos (struct type *type, int i, int which) |
14f9c5c9 | 1545 | { |
d2e4a39e | 1546 | return TYPE_FIELD_BITPOS (desc_base_type (type), 2 * i + which - 2); |
14f9c5c9 AS |
1547 | } |
1548 | ||
1549 | /* If BOUNDS is an array-bounds structure type, return the bit field size | |
1550 | of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper | |
4c4b4cd2 PH |
1551 | bound, if WHICH is 1. The first bound is I=1. */ |
1552 | ||
76a01679 | 1553 | static int |
d2e4a39e | 1554 | desc_bound_bitsize (struct type *type, int i, int which) |
14f9c5c9 AS |
1555 | { |
1556 | type = desc_base_type (type); | |
1557 | ||
d2e4a39e AS |
1558 | if (TYPE_FIELD_BITSIZE (type, 2 * i + which - 2) > 0) |
1559 | return TYPE_FIELD_BITSIZE (type, 2 * i + which - 2); | |
1560 | else | |
1561 | return 8 * TYPE_LENGTH (TYPE_FIELD_TYPE (type, 2 * i + which - 2)); | |
14f9c5c9 AS |
1562 | } |
1563 | ||
1564 | /* If TYPE is the type of an array-bounds structure, the type of its | |
4c4b4cd2 PH |
1565 | Ith bound (numbering from 1). Otherwise, NULL. */ |
1566 | ||
d2e4a39e AS |
1567 | static struct type * |
1568 | desc_index_type (struct type *type, int i) | |
14f9c5c9 AS |
1569 | { |
1570 | type = desc_base_type (type); | |
1571 | ||
1572 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
d2e4a39e AS |
1573 | return lookup_struct_elt_type (type, bound_name[2 * i - 2], 1); |
1574 | else | |
14f9c5c9 AS |
1575 | return NULL; |
1576 | } | |
1577 | ||
4c4b4cd2 PH |
1578 | /* The number of index positions in the array-bounds type TYPE. |
1579 | Return 0 if TYPE is NULL. */ | |
1580 | ||
14f9c5c9 | 1581 | static int |
d2e4a39e | 1582 | desc_arity (struct type *type) |
14f9c5c9 AS |
1583 | { |
1584 | type = desc_base_type (type); | |
1585 | ||
1586 | if (type != NULL) | |
1587 | return TYPE_NFIELDS (type) / 2; | |
1588 | return 0; | |
1589 | } | |
1590 | ||
4c4b4cd2 PH |
1591 | /* Non-zero iff TYPE is a simple array type (not a pointer to one) or |
1592 | an array descriptor type (representing an unconstrained array | |
1593 | type). */ | |
1594 | ||
76a01679 JB |
1595 | static int |
1596 | ada_is_direct_array_type (struct type *type) | |
4c4b4cd2 PH |
1597 | { |
1598 | if (type == NULL) | |
1599 | return 0; | |
61ee279c | 1600 | type = ada_check_typedef (type); |
4c4b4cd2 | 1601 | return (TYPE_CODE (type) == TYPE_CODE_ARRAY |
76a01679 | 1602 | || ada_is_array_descriptor_type (type)); |
4c4b4cd2 PH |
1603 | } |
1604 | ||
52ce6436 PH |
1605 | /* Non-zero iff TYPE represents any kind of array in Ada, or a pointer |
1606 | * to one. */ | |
1607 | ||
1608 | int | |
1609 | ada_is_array_type (struct type *type) | |
1610 | { | |
1611 | while (type != NULL | |
1612 | && (TYPE_CODE (type) == TYPE_CODE_PTR | |
1613 | || TYPE_CODE (type) == TYPE_CODE_REF)) | |
1614 | type = TYPE_TARGET_TYPE (type); | |
1615 | return ada_is_direct_array_type (type); | |
1616 | } | |
1617 | ||
4c4b4cd2 | 1618 | /* Non-zero iff TYPE is a simple array type or pointer to one. */ |
14f9c5c9 | 1619 | |
14f9c5c9 | 1620 | int |
4c4b4cd2 | 1621 | ada_is_simple_array_type (struct type *type) |
14f9c5c9 AS |
1622 | { |
1623 | if (type == NULL) | |
1624 | return 0; | |
61ee279c | 1625 | type = ada_check_typedef (type); |
14f9c5c9 | 1626 | return (TYPE_CODE (type) == TYPE_CODE_ARRAY |
4c4b4cd2 PH |
1627 | || (TYPE_CODE (type) == TYPE_CODE_PTR |
1628 | && TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_ARRAY)); | |
14f9c5c9 AS |
1629 | } |
1630 | ||
4c4b4cd2 PH |
1631 | /* Non-zero iff TYPE belongs to a GNAT array descriptor. */ |
1632 | ||
14f9c5c9 | 1633 | int |
4c4b4cd2 | 1634 | ada_is_array_descriptor_type (struct type *type) |
14f9c5c9 | 1635 | { |
d2e4a39e | 1636 | struct type *data_type = desc_data_type (type); |
14f9c5c9 AS |
1637 | |
1638 | if (type == NULL) | |
1639 | return 0; | |
61ee279c | 1640 | type = ada_check_typedef (type); |
d2e4a39e | 1641 | return |
14f9c5c9 AS |
1642 | data_type != NULL |
1643 | && ((TYPE_CODE (data_type) == TYPE_CODE_PTR | |
4c4b4cd2 PH |
1644 | && TYPE_TARGET_TYPE (data_type) != NULL |
1645 | && TYPE_CODE (TYPE_TARGET_TYPE (data_type)) == TYPE_CODE_ARRAY) | |
1265e4aa | 1646 | || TYPE_CODE (data_type) == TYPE_CODE_ARRAY) |
14f9c5c9 AS |
1647 | && desc_arity (desc_bounds_type (type)) > 0; |
1648 | } | |
1649 | ||
1650 | /* Non-zero iff type is a partially mal-formed GNAT array | |
4c4b4cd2 | 1651 | descriptor. FIXME: This is to compensate for some problems with |
14f9c5c9 | 1652 | debugging output from GNAT. Re-examine periodically to see if it |
4c4b4cd2 PH |
1653 | is still needed. */ |
1654 | ||
14f9c5c9 | 1655 | int |
ebf56fd3 | 1656 | ada_is_bogus_array_descriptor (struct type *type) |
14f9c5c9 | 1657 | { |
d2e4a39e | 1658 | return |
14f9c5c9 AS |
1659 | type != NULL |
1660 | && TYPE_CODE (type) == TYPE_CODE_STRUCT | |
1661 | && (lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL | |
4c4b4cd2 PH |
1662 | || lookup_struct_elt_type (type, "P_ARRAY", 1) != NULL) |
1663 | && !ada_is_array_descriptor_type (type); | |
14f9c5c9 AS |
1664 | } |
1665 | ||
1666 | ||
4c4b4cd2 | 1667 | /* If ARR has a record type in the form of a standard GNAT array descriptor, |
14f9c5c9 | 1668 | (fat pointer) returns the type of the array data described---specifically, |
4c4b4cd2 | 1669 | a pointer-to-array type. If BOUNDS is non-zero, the bounds data are filled |
14f9c5c9 | 1670 | in from the descriptor; otherwise, they are left unspecified. If |
4c4b4cd2 PH |
1671 | the ARR denotes a null array descriptor and BOUNDS is non-zero, |
1672 | returns NULL. The result is simply the type of ARR if ARR is not | |
14f9c5c9 | 1673 | a descriptor. */ |
d2e4a39e AS |
1674 | struct type * |
1675 | ada_type_of_array (struct value *arr, int bounds) | |
14f9c5c9 | 1676 | { |
df407dfe AC |
1677 | if (ada_is_packed_array_type (value_type (arr))) |
1678 | return decode_packed_array_type (value_type (arr)); | |
14f9c5c9 | 1679 | |
df407dfe AC |
1680 | if (!ada_is_array_descriptor_type (value_type (arr))) |
1681 | return value_type (arr); | |
d2e4a39e AS |
1682 | |
1683 | if (!bounds) | |
1684 | return | |
df407dfe | 1685 | ada_check_typedef (TYPE_TARGET_TYPE (desc_data_type (value_type (arr)))); |
14f9c5c9 AS |
1686 | else |
1687 | { | |
d2e4a39e | 1688 | struct type *elt_type; |
14f9c5c9 | 1689 | int arity; |
d2e4a39e | 1690 | struct value *descriptor; |
df407dfe | 1691 | struct objfile *objf = TYPE_OBJFILE (value_type (arr)); |
14f9c5c9 | 1692 | |
df407dfe AC |
1693 | elt_type = ada_array_element_type (value_type (arr), -1); |
1694 | arity = ada_array_arity (value_type (arr)); | |
14f9c5c9 | 1695 | |
d2e4a39e | 1696 | if (elt_type == NULL || arity == 0) |
df407dfe | 1697 | return ada_check_typedef (value_type (arr)); |
14f9c5c9 AS |
1698 | |
1699 | descriptor = desc_bounds (arr); | |
d2e4a39e | 1700 | if (value_as_long (descriptor) == 0) |
4c4b4cd2 | 1701 | return NULL; |
d2e4a39e | 1702 | while (arity > 0) |
4c4b4cd2 PH |
1703 | { |
1704 | struct type *range_type = alloc_type (objf); | |
1705 | struct type *array_type = alloc_type (objf); | |
1706 | struct value *low = desc_one_bound (descriptor, arity, 0); | |
1707 | struct value *high = desc_one_bound (descriptor, arity, 1); | |
1708 | arity -= 1; | |
1709 | ||
df407dfe | 1710 | create_range_type (range_type, value_type (low), |
529cad9c PH |
1711 | longest_to_int (value_as_long (low)), |
1712 | longest_to_int (value_as_long (high))); | |
4c4b4cd2 PH |
1713 | elt_type = create_array_type (array_type, elt_type, range_type); |
1714 | } | |
14f9c5c9 AS |
1715 | |
1716 | return lookup_pointer_type (elt_type); | |
1717 | } | |
1718 | } | |
1719 | ||
1720 | /* If ARR does not represent an array, returns ARR unchanged. | |
4c4b4cd2 PH |
1721 | Otherwise, returns either a standard GDB array with bounds set |
1722 | appropriately or, if ARR is a non-null fat pointer, a pointer to a standard | |
1723 | GDB array. Returns NULL if ARR is a null fat pointer. */ | |
1724 | ||
d2e4a39e AS |
1725 | struct value * |
1726 | ada_coerce_to_simple_array_ptr (struct value *arr) | |
14f9c5c9 | 1727 | { |
df407dfe | 1728 | if (ada_is_array_descriptor_type (value_type (arr))) |
14f9c5c9 | 1729 | { |
d2e4a39e | 1730 | struct type *arrType = ada_type_of_array (arr, 1); |
14f9c5c9 | 1731 | if (arrType == NULL) |
4c4b4cd2 | 1732 | return NULL; |
14f9c5c9 AS |
1733 | return value_cast (arrType, value_copy (desc_data (arr))); |
1734 | } | |
df407dfe | 1735 | else if (ada_is_packed_array_type (value_type (arr))) |
14f9c5c9 AS |
1736 | return decode_packed_array (arr); |
1737 | else | |
1738 | return arr; | |
1739 | } | |
1740 | ||
1741 | /* If ARR does not represent an array, returns ARR unchanged. | |
1742 | Otherwise, returns a standard GDB array describing ARR (which may | |
4c4b4cd2 PH |
1743 | be ARR itself if it already is in the proper form). */ |
1744 | ||
1745 | static struct value * | |
d2e4a39e | 1746 | ada_coerce_to_simple_array (struct value *arr) |
14f9c5c9 | 1747 | { |
df407dfe | 1748 | if (ada_is_array_descriptor_type (value_type (arr))) |
14f9c5c9 | 1749 | { |
d2e4a39e | 1750 | struct value *arrVal = ada_coerce_to_simple_array_ptr (arr); |
14f9c5c9 | 1751 | if (arrVal == NULL) |
323e0a4a | 1752 | error (_("Bounds unavailable for null array pointer.")); |
529cad9c | 1753 | check_size (TYPE_TARGET_TYPE (value_type (arrVal))); |
14f9c5c9 AS |
1754 | return value_ind (arrVal); |
1755 | } | |
df407dfe | 1756 | else if (ada_is_packed_array_type (value_type (arr))) |
14f9c5c9 | 1757 | return decode_packed_array (arr); |
d2e4a39e | 1758 | else |
14f9c5c9 AS |
1759 | return arr; |
1760 | } | |
1761 | ||
1762 | /* If TYPE represents a GNAT array type, return it translated to an | |
1763 | ordinary GDB array type (possibly with BITSIZE fields indicating | |
4c4b4cd2 PH |
1764 | packing). For other types, is the identity. */ |
1765 | ||
d2e4a39e AS |
1766 | struct type * |
1767 | ada_coerce_to_simple_array_type (struct type *type) | |
14f9c5c9 | 1768 | { |
d2e4a39e AS |
1769 | struct value *mark = value_mark (); |
1770 | struct value *dummy = value_from_longest (builtin_type_long, 0); | |
1771 | struct type *result; | |
04624583 | 1772 | deprecated_set_value_type (dummy, type); |
14f9c5c9 | 1773 | result = ada_type_of_array (dummy, 0); |
4c4b4cd2 | 1774 | value_free_to_mark (mark); |
14f9c5c9 AS |
1775 | return result; |
1776 | } | |
1777 | ||
4c4b4cd2 PH |
1778 | /* Non-zero iff TYPE represents a standard GNAT packed-array type. */ |
1779 | ||
14f9c5c9 | 1780 | int |
d2e4a39e | 1781 | ada_is_packed_array_type (struct type *type) |
14f9c5c9 AS |
1782 | { |
1783 | if (type == NULL) | |
1784 | return 0; | |
4c4b4cd2 | 1785 | type = desc_base_type (type); |
61ee279c | 1786 | type = ada_check_typedef (type); |
d2e4a39e | 1787 | return |
14f9c5c9 AS |
1788 | ada_type_name (type) != NULL |
1789 | && strstr (ada_type_name (type), "___XP") != NULL; | |
1790 | } | |
1791 | ||
1792 | /* Given that TYPE is a standard GDB array type with all bounds filled | |
1793 | in, and that the element size of its ultimate scalar constituents | |
1794 | (that is, either its elements, or, if it is an array of arrays, its | |
1795 | elements' elements, etc.) is *ELT_BITS, return an identical type, | |
1796 | but with the bit sizes of its elements (and those of any | |
1797 | constituent arrays) recorded in the BITSIZE components of its | |
4c4b4cd2 PH |
1798 | TYPE_FIELD_BITSIZE values, and with *ELT_BITS set to its total size |
1799 | in bits. */ | |
1800 | ||
d2e4a39e AS |
1801 | static struct type * |
1802 | packed_array_type (struct type *type, long *elt_bits) | |
14f9c5c9 | 1803 | { |
d2e4a39e AS |
1804 | struct type *new_elt_type; |
1805 | struct type *new_type; | |
14f9c5c9 AS |
1806 | LONGEST low_bound, high_bound; |
1807 | ||
61ee279c | 1808 | type = ada_check_typedef (type); |
14f9c5c9 AS |
1809 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY) |
1810 | return type; | |
1811 | ||
1812 | new_type = alloc_type (TYPE_OBJFILE (type)); | |
61ee279c | 1813 | new_elt_type = packed_array_type (ada_check_typedef (TYPE_TARGET_TYPE (type)), |
4c4b4cd2 | 1814 | elt_bits); |
14f9c5c9 AS |
1815 | create_array_type (new_type, new_elt_type, TYPE_FIELD_TYPE (type, 0)); |
1816 | TYPE_FIELD_BITSIZE (new_type, 0) = *elt_bits; | |
1817 | TYPE_NAME (new_type) = ada_type_name (type); | |
1818 | ||
d2e4a39e | 1819 | if (get_discrete_bounds (TYPE_FIELD_TYPE (type, 0), |
4c4b4cd2 | 1820 | &low_bound, &high_bound) < 0) |
14f9c5c9 AS |
1821 | low_bound = high_bound = 0; |
1822 | if (high_bound < low_bound) | |
1823 | *elt_bits = TYPE_LENGTH (new_type) = 0; | |
d2e4a39e | 1824 | else |
14f9c5c9 AS |
1825 | { |
1826 | *elt_bits *= (high_bound - low_bound + 1); | |
d2e4a39e | 1827 | TYPE_LENGTH (new_type) = |
4c4b4cd2 | 1828 | (*elt_bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; |
14f9c5c9 AS |
1829 | } |
1830 | ||
4c4b4cd2 | 1831 | TYPE_FLAGS (new_type) |= TYPE_FLAG_FIXED_INSTANCE; |
14f9c5c9 AS |
1832 | return new_type; |
1833 | } | |
1834 | ||
4c4b4cd2 PH |
1835 | /* The array type encoded by TYPE, where ada_is_packed_array_type (TYPE). */ |
1836 | ||
d2e4a39e AS |
1837 | static struct type * |
1838 | decode_packed_array_type (struct type *type) | |
1839 | { | |
4c4b4cd2 | 1840 | struct symbol *sym; |
d2e4a39e | 1841 | struct block **blocks; |
727e3d2e JB |
1842 | char *raw_name = ada_type_name (ada_check_typedef (type)); |
1843 | char *name; | |
1844 | char *tail; | |
d2e4a39e | 1845 | struct type *shadow_type; |
14f9c5c9 AS |
1846 | long bits; |
1847 | int i, n; | |
1848 | ||
727e3d2e JB |
1849 | if (!raw_name) |
1850 | raw_name = ada_type_name (desc_base_type (type)); | |
1851 | ||
1852 | if (!raw_name) | |
1853 | return NULL; | |
1854 | ||
1855 | name = (char *) alloca (strlen (raw_name) + 1); | |
1856 | tail = strstr (raw_name, "___XP"); | |
4c4b4cd2 PH |
1857 | type = desc_base_type (type); |
1858 | ||
14f9c5c9 AS |
1859 | memcpy (name, raw_name, tail - raw_name); |
1860 | name[tail - raw_name] = '\000'; | |
1861 | ||
4c4b4cd2 PH |
1862 | sym = standard_lookup (name, get_selected_block (0), VAR_DOMAIN); |
1863 | if (sym == NULL || SYMBOL_TYPE (sym) == NULL) | |
14f9c5c9 | 1864 | { |
323e0a4a | 1865 | lim_warning (_("could not find bounds information on packed array")); |
14f9c5c9 AS |
1866 | return NULL; |
1867 | } | |
4c4b4cd2 | 1868 | shadow_type = SYMBOL_TYPE (sym); |
14f9c5c9 AS |
1869 | |
1870 | if (TYPE_CODE (shadow_type) != TYPE_CODE_ARRAY) | |
1871 | { | |
323e0a4a | 1872 | lim_warning (_("could not understand bounds information on packed array")); |
14f9c5c9 AS |
1873 | return NULL; |
1874 | } | |
d2e4a39e | 1875 | |
14f9c5c9 AS |
1876 | if (sscanf (tail + sizeof ("___XP") - 1, "%ld", &bits) != 1) |
1877 | { | |
4c4b4cd2 | 1878 | lim_warning |
323e0a4a | 1879 | (_("could not understand bit size information on packed array")); |
14f9c5c9 AS |
1880 | return NULL; |
1881 | } | |
d2e4a39e | 1882 | |
14f9c5c9 AS |
1883 | return packed_array_type (shadow_type, &bits); |
1884 | } | |
1885 | ||
4c4b4cd2 | 1886 | /* Given that ARR is a struct value *indicating a GNAT packed array, |
14f9c5c9 AS |
1887 | returns a simple array that denotes that array. Its type is a |
1888 | standard GDB array type except that the BITSIZEs of the array | |
1889 | target types are set to the number of bits in each element, and the | |
4c4b4cd2 | 1890 | type length is set appropriately. */ |
14f9c5c9 | 1891 | |
d2e4a39e AS |
1892 | static struct value * |
1893 | decode_packed_array (struct value *arr) | |
14f9c5c9 | 1894 | { |
4c4b4cd2 | 1895 | struct type *type; |
14f9c5c9 | 1896 | |
4c4b4cd2 | 1897 | arr = ada_coerce_ref (arr); |
df407dfe | 1898 | if (TYPE_CODE (value_type (arr)) == TYPE_CODE_PTR) |
4c4b4cd2 PH |
1899 | arr = ada_value_ind (arr); |
1900 | ||
df407dfe | 1901 | type = decode_packed_array_type (value_type (arr)); |
14f9c5c9 AS |
1902 | if (type == NULL) |
1903 | { | |
323e0a4a | 1904 | error (_("can't unpack array")); |
14f9c5c9 AS |
1905 | return NULL; |
1906 | } | |
61ee279c | 1907 | |
32c9a795 MD |
1908 | if (gdbarch_bits_big_endian (current_gdbarch) |
1909 | && ada_is_modular_type (value_type (arr))) | |
61ee279c PH |
1910 | { |
1911 | /* This is a (right-justified) modular type representing a packed | |
1912 | array with no wrapper. In order to interpret the value through | |
1913 | the (left-justified) packed array type we just built, we must | |
1914 | first left-justify it. */ | |
1915 | int bit_size, bit_pos; | |
1916 | ULONGEST mod; | |
1917 | ||
df407dfe | 1918 | mod = ada_modulus (value_type (arr)) - 1; |
61ee279c PH |
1919 | bit_size = 0; |
1920 | while (mod > 0) | |
1921 | { | |
1922 | bit_size += 1; | |
1923 | mod >>= 1; | |
1924 | } | |
df407dfe | 1925 | bit_pos = HOST_CHAR_BIT * TYPE_LENGTH (value_type (arr)) - bit_size; |
61ee279c PH |
1926 | arr = ada_value_primitive_packed_val (arr, NULL, |
1927 | bit_pos / HOST_CHAR_BIT, | |
1928 | bit_pos % HOST_CHAR_BIT, | |
1929 | bit_size, | |
1930 | type); | |
1931 | } | |
1932 | ||
4c4b4cd2 | 1933 | return coerce_unspec_val_to_type (arr, type); |
14f9c5c9 AS |
1934 | } |
1935 | ||
1936 | ||
1937 | /* The value of the element of packed array ARR at the ARITY indices | |
4c4b4cd2 | 1938 | given in IND. ARR must be a simple array. */ |
14f9c5c9 | 1939 | |
d2e4a39e AS |
1940 | static struct value * |
1941 | value_subscript_packed (struct value *arr, int arity, struct value **ind) | |
14f9c5c9 AS |
1942 | { |
1943 | int i; | |
1944 | int bits, elt_off, bit_off; | |
1945 | long elt_total_bit_offset; | |
d2e4a39e AS |
1946 | struct type *elt_type; |
1947 | struct value *v; | |
14f9c5c9 AS |
1948 | |
1949 | bits = 0; | |
1950 | elt_total_bit_offset = 0; | |
df407dfe | 1951 | elt_type = ada_check_typedef (value_type (arr)); |
d2e4a39e | 1952 | for (i = 0; i < arity; i += 1) |
14f9c5c9 | 1953 | { |
d2e4a39e | 1954 | if (TYPE_CODE (elt_type) != TYPE_CODE_ARRAY |
4c4b4cd2 PH |
1955 | || TYPE_FIELD_BITSIZE (elt_type, 0) == 0) |
1956 | error | |
323e0a4a | 1957 | (_("attempt to do packed indexing of something other than a packed array")); |
14f9c5c9 | 1958 | else |
4c4b4cd2 PH |
1959 | { |
1960 | struct type *range_type = TYPE_INDEX_TYPE (elt_type); | |
1961 | LONGEST lowerbound, upperbound; | |
1962 | LONGEST idx; | |
1963 | ||
1964 | if (get_discrete_bounds (range_type, &lowerbound, &upperbound) < 0) | |
1965 | { | |
323e0a4a | 1966 | lim_warning (_("don't know bounds of array")); |
4c4b4cd2 PH |
1967 | lowerbound = upperbound = 0; |
1968 | } | |
1969 | ||
1970 | idx = value_as_long (value_pos_atr (ind[i])); | |
1971 | if (idx < lowerbound || idx > upperbound) | |
323e0a4a | 1972 | lim_warning (_("packed array index %ld out of bounds"), (long) idx); |
4c4b4cd2 PH |
1973 | bits = TYPE_FIELD_BITSIZE (elt_type, 0); |
1974 | elt_total_bit_offset += (idx - lowerbound) * bits; | |
61ee279c | 1975 | elt_type = ada_check_typedef (TYPE_TARGET_TYPE (elt_type)); |
4c4b4cd2 | 1976 | } |
14f9c5c9 AS |
1977 | } |
1978 | elt_off = elt_total_bit_offset / HOST_CHAR_BIT; | |
1979 | bit_off = elt_total_bit_offset % HOST_CHAR_BIT; | |
d2e4a39e AS |
1980 | |
1981 | v = ada_value_primitive_packed_val (arr, NULL, elt_off, bit_off, | |
4c4b4cd2 | 1982 | bits, elt_type); |
14f9c5c9 AS |
1983 | return v; |
1984 | } | |
1985 | ||
4c4b4cd2 | 1986 | /* Non-zero iff TYPE includes negative integer values. */ |
14f9c5c9 AS |
1987 | |
1988 | static int | |
d2e4a39e | 1989 | has_negatives (struct type *type) |
14f9c5c9 | 1990 | { |
d2e4a39e AS |
1991 | switch (TYPE_CODE (type)) |
1992 | { | |
1993 | default: | |
1994 | return 0; | |
1995 | case TYPE_CODE_INT: | |
1996 | return !TYPE_UNSIGNED (type); | |
1997 | case TYPE_CODE_RANGE: | |
1998 | return TYPE_LOW_BOUND (type) < 0; | |
1999 | } | |
14f9c5c9 | 2000 | } |
d2e4a39e | 2001 | |
14f9c5c9 AS |
2002 | |
2003 | /* Create a new value of type TYPE from the contents of OBJ starting | |
2004 | at byte OFFSET, and bit offset BIT_OFFSET within that byte, | |
2005 | proceeding for BIT_SIZE bits. If OBJ is an lval in memory, then | |
4c4b4cd2 PH |
2006 | assigning through the result will set the field fetched from. |
2007 | VALADDR is ignored unless OBJ is NULL, in which case, | |
2008 | VALADDR+OFFSET must address the start of storage containing the | |
2009 | packed value. The value returned in this case is never an lval. | |
2010 | Assumes 0 <= BIT_OFFSET < HOST_CHAR_BIT. */ | |
14f9c5c9 | 2011 | |
d2e4a39e | 2012 | struct value * |
fc1a4b47 | 2013 | ada_value_primitive_packed_val (struct value *obj, const gdb_byte *valaddr, |
a2bd3dcd | 2014 | long offset, int bit_offset, int bit_size, |
4c4b4cd2 | 2015 | struct type *type) |
14f9c5c9 | 2016 | { |
d2e4a39e | 2017 | struct value *v; |
4c4b4cd2 PH |
2018 | int src, /* Index into the source area */ |
2019 | targ, /* Index into the target area */ | |
2020 | srcBitsLeft, /* Number of source bits left to move */ | |
2021 | nsrc, ntarg, /* Number of source and target bytes */ | |
2022 | unusedLS, /* Number of bits in next significant | |
2023 | byte of source that are unused */ | |
2024 | accumSize; /* Number of meaningful bits in accum */ | |
2025 | unsigned char *bytes; /* First byte containing data to unpack */ | |
d2e4a39e | 2026 | unsigned char *unpacked; |
4c4b4cd2 | 2027 | unsigned long accum; /* Staging area for bits being transferred */ |
14f9c5c9 AS |
2028 | unsigned char sign; |
2029 | int len = (bit_size + bit_offset + HOST_CHAR_BIT - 1) / 8; | |
4c4b4cd2 PH |
2030 | /* Transmit bytes from least to most significant; delta is the direction |
2031 | the indices move. */ | |
32c9a795 | 2032 | int delta = gdbarch_bits_big_endian (current_gdbarch) ? -1 : 1; |
14f9c5c9 | 2033 | |
61ee279c | 2034 | type = ada_check_typedef (type); |
14f9c5c9 AS |
2035 | |
2036 | if (obj == NULL) | |
2037 | { | |
2038 | v = allocate_value (type); | |
d2e4a39e | 2039 | bytes = (unsigned char *) (valaddr + offset); |
14f9c5c9 | 2040 | } |
9214ee5f | 2041 | else if (VALUE_LVAL (obj) == lval_memory && value_lazy (obj)) |
14f9c5c9 AS |
2042 | { |
2043 | v = value_at (type, | |
df407dfe | 2044 | VALUE_ADDRESS (obj) + value_offset (obj) + offset); |
d2e4a39e | 2045 | bytes = (unsigned char *) alloca (len); |
14f9c5c9 AS |
2046 | read_memory (VALUE_ADDRESS (v), bytes, len); |
2047 | } | |
d2e4a39e | 2048 | else |
14f9c5c9 AS |
2049 | { |
2050 | v = allocate_value (type); | |
0fd88904 | 2051 | bytes = (unsigned char *) value_contents (obj) + offset; |
14f9c5c9 | 2052 | } |
d2e4a39e AS |
2053 | |
2054 | if (obj != NULL) | |
14f9c5c9 AS |
2055 | { |
2056 | VALUE_LVAL (v) = VALUE_LVAL (obj); | |
2057 | if (VALUE_LVAL (obj) == lval_internalvar) | |
4c4b4cd2 | 2058 | VALUE_LVAL (v) = lval_internalvar_component; |
df407dfe | 2059 | VALUE_ADDRESS (v) = VALUE_ADDRESS (obj) + value_offset (obj) + offset; |
9bbda503 AC |
2060 | set_value_bitpos (v, bit_offset + value_bitpos (obj)); |
2061 | set_value_bitsize (v, bit_size); | |
df407dfe | 2062 | if (value_bitpos (v) >= HOST_CHAR_BIT) |
4c4b4cd2 PH |
2063 | { |
2064 | VALUE_ADDRESS (v) += 1; | |
9bbda503 | 2065 | set_value_bitpos (v, value_bitpos (v) - HOST_CHAR_BIT); |
4c4b4cd2 | 2066 | } |
14f9c5c9 AS |
2067 | } |
2068 | else | |
9bbda503 | 2069 | set_value_bitsize (v, bit_size); |
0fd88904 | 2070 | unpacked = (unsigned char *) value_contents (v); |
14f9c5c9 AS |
2071 | |
2072 | srcBitsLeft = bit_size; | |
2073 | nsrc = len; | |
2074 | ntarg = TYPE_LENGTH (type); | |
2075 | sign = 0; | |
2076 | if (bit_size == 0) | |
2077 | { | |
2078 | memset (unpacked, 0, TYPE_LENGTH (type)); | |
2079 | return v; | |
2080 | } | |
32c9a795 | 2081 | else if (gdbarch_bits_big_endian (current_gdbarch)) |
14f9c5c9 | 2082 | { |
d2e4a39e | 2083 | src = len - 1; |
1265e4aa JB |
2084 | if (has_negatives (type) |
2085 | && ((bytes[0] << bit_offset) & (1 << (HOST_CHAR_BIT - 1)))) | |
4c4b4cd2 | 2086 | sign = ~0; |
d2e4a39e AS |
2087 | |
2088 | unusedLS = | |
4c4b4cd2 PH |
2089 | (HOST_CHAR_BIT - (bit_size + bit_offset) % HOST_CHAR_BIT) |
2090 | % HOST_CHAR_BIT; | |
14f9c5c9 AS |
2091 | |
2092 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
2093 | { |
2094 | case TYPE_CODE_ARRAY: | |
2095 | case TYPE_CODE_UNION: | |
2096 | case TYPE_CODE_STRUCT: | |
2097 | /* Non-scalar values must be aligned at a byte boundary... */ | |
2098 | accumSize = | |
2099 | (HOST_CHAR_BIT - bit_size % HOST_CHAR_BIT) % HOST_CHAR_BIT; | |
2100 | /* ... And are placed at the beginning (most-significant) bytes | |
2101 | of the target. */ | |
529cad9c | 2102 | targ = (bit_size + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT - 1; |
4c4b4cd2 PH |
2103 | break; |
2104 | default: | |
2105 | accumSize = 0; | |
2106 | targ = TYPE_LENGTH (type) - 1; | |
2107 | break; | |
2108 | } | |
14f9c5c9 | 2109 | } |
d2e4a39e | 2110 | else |
14f9c5c9 AS |
2111 | { |
2112 | int sign_bit_offset = (bit_size + bit_offset - 1) % 8; | |
2113 | ||
2114 | src = targ = 0; | |
2115 | unusedLS = bit_offset; | |
2116 | accumSize = 0; | |
2117 | ||
d2e4a39e | 2118 | if (has_negatives (type) && (bytes[len - 1] & (1 << sign_bit_offset))) |
4c4b4cd2 | 2119 | sign = ~0; |
14f9c5c9 | 2120 | } |
d2e4a39e | 2121 | |
14f9c5c9 AS |
2122 | accum = 0; |
2123 | while (nsrc > 0) | |
2124 | { | |
2125 | /* Mask for removing bits of the next source byte that are not | |
4c4b4cd2 | 2126 | part of the value. */ |
d2e4a39e | 2127 | unsigned int unusedMSMask = |
4c4b4cd2 PH |
2128 | (1 << (srcBitsLeft >= HOST_CHAR_BIT ? HOST_CHAR_BIT : srcBitsLeft)) - |
2129 | 1; | |
2130 | /* Sign-extend bits for this byte. */ | |
14f9c5c9 | 2131 | unsigned int signMask = sign & ~unusedMSMask; |
d2e4a39e | 2132 | accum |= |
4c4b4cd2 | 2133 | (((bytes[src] >> unusedLS) & unusedMSMask) | signMask) << accumSize; |
14f9c5c9 | 2134 | accumSize += HOST_CHAR_BIT - unusedLS; |
d2e4a39e | 2135 | if (accumSize >= HOST_CHAR_BIT) |
4c4b4cd2 PH |
2136 | { |
2137 | unpacked[targ] = accum & ~(~0L << HOST_CHAR_BIT); | |
2138 | accumSize -= HOST_CHAR_BIT; | |
2139 | accum >>= HOST_CHAR_BIT; | |
2140 | ntarg -= 1; | |
2141 | targ += delta; | |
2142 | } | |
14f9c5c9 AS |
2143 | srcBitsLeft -= HOST_CHAR_BIT - unusedLS; |
2144 | unusedLS = 0; | |
2145 | nsrc -= 1; | |
2146 | src += delta; | |
2147 | } | |
2148 | while (ntarg > 0) | |
2149 | { | |
2150 | accum |= sign << accumSize; | |
2151 | unpacked[targ] = accum & ~(~0L << HOST_CHAR_BIT); | |
2152 | accumSize -= HOST_CHAR_BIT; | |
2153 | accum >>= HOST_CHAR_BIT; | |
2154 | ntarg -= 1; | |
2155 | targ += delta; | |
2156 | } | |
2157 | ||
2158 | return v; | |
2159 | } | |
d2e4a39e | 2160 | |
14f9c5c9 AS |
2161 | /* Move N bits from SOURCE, starting at bit offset SRC_OFFSET to |
2162 | TARGET, starting at bit offset TARG_OFFSET. SOURCE and TARGET must | |
4c4b4cd2 | 2163 | not overlap. */ |
14f9c5c9 | 2164 | static void |
fc1a4b47 | 2165 | move_bits (gdb_byte *target, int targ_offset, const gdb_byte *source, |
0fd88904 | 2166 | int src_offset, int n) |
14f9c5c9 AS |
2167 | { |
2168 | unsigned int accum, mask; | |
2169 | int accum_bits, chunk_size; | |
2170 | ||
2171 | target += targ_offset / HOST_CHAR_BIT; | |
2172 | targ_offset %= HOST_CHAR_BIT; | |
2173 | source += src_offset / HOST_CHAR_BIT; | |
2174 | src_offset %= HOST_CHAR_BIT; | |
32c9a795 | 2175 | if (gdbarch_bits_big_endian (current_gdbarch)) |
14f9c5c9 AS |
2176 | { |
2177 | accum = (unsigned char) *source; | |
2178 | source += 1; | |
2179 | accum_bits = HOST_CHAR_BIT - src_offset; | |
2180 | ||
d2e4a39e | 2181 | while (n > 0) |
4c4b4cd2 PH |
2182 | { |
2183 | int unused_right; | |
2184 | accum = (accum << HOST_CHAR_BIT) + (unsigned char) *source; | |
2185 | accum_bits += HOST_CHAR_BIT; | |
2186 | source += 1; | |
2187 | chunk_size = HOST_CHAR_BIT - targ_offset; | |
2188 | if (chunk_size > n) | |
2189 | chunk_size = n; | |
2190 | unused_right = HOST_CHAR_BIT - (chunk_size + targ_offset); | |
2191 | mask = ((1 << chunk_size) - 1) << unused_right; | |
2192 | *target = | |
2193 | (*target & ~mask) | |
2194 | | ((accum >> (accum_bits - chunk_size - unused_right)) & mask); | |
2195 | n -= chunk_size; | |
2196 | accum_bits -= chunk_size; | |
2197 | target += 1; | |
2198 | targ_offset = 0; | |
2199 | } | |
14f9c5c9 AS |
2200 | } |
2201 | else | |
2202 | { | |
2203 | accum = (unsigned char) *source >> src_offset; | |
2204 | source += 1; | |
2205 | accum_bits = HOST_CHAR_BIT - src_offset; | |
2206 | ||
d2e4a39e | 2207 | while (n > 0) |
4c4b4cd2 PH |
2208 | { |
2209 | accum = accum + ((unsigned char) *source << accum_bits); | |
2210 | accum_bits += HOST_CHAR_BIT; | |
2211 | source += 1; | |
2212 | chunk_size = HOST_CHAR_BIT - targ_offset; | |
2213 | if (chunk_size > n) | |
2214 | chunk_size = n; | |
2215 | mask = ((1 << chunk_size) - 1) << targ_offset; | |
2216 | *target = (*target & ~mask) | ((accum << targ_offset) & mask); | |
2217 | n -= chunk_size; | |
2218 | accum_bits -= chunk_size; | |
2219 | accum >>= chunk_size; | |
2220 | target += 1; | |
2221 | targ_offset = 0; | |
2222 | } | |
14f9c5c9 AS |
2223 | } |
2224 | } | |
2225 | ||
14f9c5c9 AS |
2226 | /* Store the contents of FROMVAL into the location of TOVAL. |
2227 | Return a new value with the location of TOVAL and contents of | |
2228 | FROMVAL. Handles assignment into packed fields that have | |
4c4b4cd2 | 2229 | floating-point or non-scalar types. */ |
14f9c5c9 | 2230 | |
d2e4a39e AS |
2231 | static struct value * |
2232 | ada_value_assign (struct value *toval, struct value *fromval) | |
14f9c5c9 | 2233 | { |
df407dfe AC |
2234 | struct type *type = value_type (toval); |
2235 | int bits = value_bitsize (toval); | |
14f9c5c9 | 2236 | |
52ce6436 PH |
2237 | toval = ada_coerce_ref (toval); |
2238 | fromval = ada_coerce_ref (fromval); | |
2239 | ||
2240 | if (ada_is_direct_array_type (value_type (toval))) | |
2241 | toval = ada_coerce_to_simple_array (toval); | |
2242 | if (ada_is_direct_array_type (value_type (fromval))) | |
2243 | fromval = ada_coerce_to_simple_array (fromval); | |
2244 | ||
88e3b34b | 2245 | if (!deprecated_value_modifiable (toval)) |
323e0a4a | 2246 | error (_("Left operand of assignment is not a modifiable lvalue.")); |
14f9c5c9 | 2247 | |
d2e4a39e | 2248 | if (VALUE_LVAL (toval) == lval_memory |
14f9c5c9 | 2249 | && bits > 0 |
d2e4a39e | 2250 | && (TYPE_CODE (type) == TYPE_CODE_FLT |
4c4b4cd2 | 2251 | || TYPE_CODE (type) == TYPE_CODE_STRUCT)) |
14f9c5c9 | 2252 | { |
df407dfe AC |
2253 | int len = (value_bitpos (toval) |
2254 | + bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; | |
d2e4a39e AS |
2255 | char *buffer = (char *) alloca (len); |
2256 | struct value *val; | |
52ce6436 | 2257 | CORE_ADDR to_addr = VALUE_ADDRESS (toval) + value_offset (toval); |
14f9c5c9 AS |
2258 | |
2259 | if (TYPE_CODE (type) == TYPE_CODE_FLT) | |
4c4b4cd2 | 2260 | fromval = value_cast (type, fromval); |
14f9c5c9 | 2261 | |
52ce6436 | 2262 | read_memory (to_addr, buffer, len); |
32c9a795 | 2263 | if (gdbarch_bits_big_endian (current_gdbarch)) |
df407dfe | 2264 | move_bits (buffer, value_bitpos (toval), |
0fd88904 | 2265 | value_contents (fromval), |
df407dfe | 2266 | TYPE_LENGTH (value_type (fromval)) * TARGET_CHAR_BIT - |
4c4b4cd2 | 2267 | bits, bits); |
14f9c5c9 | 2268 | else |
0fd88904 | 2269 | move_bits (buffer, value_bitpos (toval), value_contents (fromval), |
4c4b4cd2 | 2270 | 0, bits); |
52ce6436 PH |
2271 | write_memory (to_addr, buffer, len); |
2272 | if (deprecated_memory_changed_hook) | |
2273 | deprecated_memory_changed_hook (to_addr, len); | |
2274 | ||
14f9c5c9 | 2275 | val = value_copy (toval); |
0fd88904 | 2276 | memcpy (value_contents_raw (val), value_contents (fromval), |
4c4b4cd2 | 2277 | TYPE_LENGTH (type)); |
04624583 | 2278 | deprecated_set_value_type (val, type); |
d2e4a39e | 2279 | |
14f9c5c9 AS |
2280 | return val; |
2281 | } | |
2282 | ||
2283 | return value_assign (toval, fromval); | |
2284 | } | |
2285 | ||
2286 | ||
52ce6436 PH |
2287 | /* Given that COMPONENT is a memory lvalue that is part of the lvalue |
2288 | * CONTAINER, assign the contents of VAL to COMPONENTS's place in | |
2289 | * CONTAINER. Modifies the VALUE_CONTENTS of CONTAINER only, not | |
2290 | * COMPONENT, and not the inferior's memory. The current contents | |
2291 | * of COMPONENT are ignored. */ | |
2292 | static void | |
2293 | value_assign_to_component (struct value *container, struct value *component, | |
2294 | struct value *val) | |
2295 | { | |
2296 | LONGEST offset_in_container = | |
2297 | (LONGEST) (VALUE_ADDRESS (component) + value_offset (component) | |
2298 | - VALUE_ADDRESS (container) - value_offset (container)); | |
2299 | int bit_offset_in_container = | |
2300 | value_bitpos (component) - value_bitpos (container); | |
2301 | int bits; | |
2302 | ||
2303 | val = value_cast (value_type (component), val); | |
2304 | ||
2305 | if (value_bitsize (component) == 0) | |
2306 | bits = TARGET_CHAR_BIT * TYPE_LENGTH (value_type (component)); | |
2307 | else | |
2308 | bits = value_bitsize (component); | |
2309 | ||
32c9a795 | 2310 | if (gdbarch_bits_big_endian (current_gdbarch)) |
52ce6436 PH |
2311 | move_bits (value_contents_writeable (container) + offset_in_container, |
2312 | value_bitpos (container) + bit_offset_in_container, | |
2313 | value_contents (val), | |
2314 | TYPE_LENGTH (value_type (component)) * TARGET_CHAR_BIT - bits, | |
2315 | bits); | |
2316 | else | |
2317 | move_bits (value_contents_writeable (container) + offset_in_container, | |
2318 | value_bitpos (container) + bit_offset_in_container, | |
2319 | value_contents (val), 0, bits); | |
2320 | } | |
2321 | ||
4c4b4cd2 PH |
2322 | /* The value of the element of array ARR at the ARITY indices given in IND. |
2323 | ARR may be either a simple array, GNAT array descriptor, or pointer | |
14f9c5c9 AS |
2324 | thereto. */ |
2325 | ||
d2e4a39e AS |
2326 | struct value * |
2327 | ada_value_subscript (struct value *arr, int arity, struct value **ind) | |
14f9c5c9 AS |
2328 | { |
2329 | int k; | |
d2e4a39e AS |
2330 | struct value *elt; |
2331 | struct type *elt_type; | |
14f9c5c9 AS |
2332 | |
2333 | elt = ada_coerce_to_simple_array (arr); | |
2334 | ||
df407dfe | 2335 | elt_type = ada_check_typedef (value_type (elt)); |
d2e4a39e | 2336 | if (TYPE_CODE (elt_type) == TYPE_CODE_ARRAY |
14f9c5c9 AS |
2337 | && TYPE_FIELD_BITSIZE (elt_type, 0) > 0) |
2338 | return value_subscript_packed (elt, arity, ind); | |
2339 | ||
2340 | for (k = 0; k < arity; k += 1) | |
2341 | { | |
2342 | if (TYPE_CODE (elt_type) != TYPE_CODE_ARRAY) | |
323e0a4a | 2343 | error (_("too many subscripts (%d expected)"), k); |
14f9c5c9 AS |
2344 | elt = value_subscript (elt, value_pos_atr (ind[k])); |
2345 | } | |
2346 | return elt; | |
2347 | } | |
2348 | ||
2349 | /* Assuming ARR is a pointer to a standard GDB array of type TYPE, the | |
2350 | value of the element of *ARR at the ARITY indices given in | |
4c4b4cd2 | 2351 | IND. Does not read the entire array into memory. */ |
14f9c5c9 | 2352 | |
d2e4a39e AS |
2353 | struct value * |
2354 | ada_value_ptr_subscript (struct value *arr, struct type *type, int arity, | |
4c4b4cd2 | 2355 | struct value **ind) |
14f9c5c9 AS |
2356 | { |
2357 | int k; | |
2358 | ||
2359 | for (k = 0; k < arity; k += 1) | |
2360 | { | |
2361 | LONGEST lwb, upb; | |
d2e4a39e | 2362 | struct value *idx; |
14f9c5c9 AS |
2363 | |
2364 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY) | |
323e0a4a | 2365 | error (_("too many subscripts (%d expected)"), k); |
d2e4a39e | 2366 | arr = value_cast (lookup_pointer_type (TYPE_TARGET_TYPE (type)), |
4c4b4cd2 | 2367 | value_copy (arr)); |
14f9c5c9 | 2368 | get_discrete_bounds (TYPE_INDEX_TYPE (type), &lwb, &upb); |
4c4b4cd2 PH |
2369 | idx = value_pos_atr (ind[k]); |
2370 | if (lwb != 0) | |
2371 | idx = value_sub (idx, value_from_longest (builtin_type_int, lwb)); | |
14f9c5c9 AS |
2372 | arr = value_add (arr, idx); |
2373 | type = TYPE_TARGET_TYPE (type); | |
2374 | } | |
2375 | ||
2376 | return value_ind (arr); | |
2377 | } | |
2378 | ||
0b5d8877 PH |
2379 | /* Given that ARRAY_PTR is a pointer or reference to an array of type TYPE (the |
2380 | actual type of ARRAY_PTR is ignored), returns a reference to | |
2381 | the Ada slice of HIGH-LOW+1 elements starting at index LOW. The lower | |
2382 | bound of this array is LOW, as per Ada rules. */ | |
2383 | static struct value * | |
6c038f32 | 2384 | ada_value_slice_ptr (struct value *array_ptr, struct type *type, |
0b5d8877 PH |
2385 | int low, int high) |
2386 | { | |
6c038f32 | 2387 | CORE_ADDR base = value_as_address (array_ptr) |
0b5d8877 PH |
2388 | + ((low - TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type))) |
2389 | * TYPE_LENGTH (TYPE_TARGET_TYPE (type))); | |
6c038f32 PH |
2390 | struct type *index_type = |
2391 | create_range_type (NULL, TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (type)), | |
0b5d8877 | 2392 | low, high); |
6c038f32 | 2393 | struct type *slice_type = |
0b5d8877 PH |
2394 | create_array_type (NULL, TYPE_TARGET_TYPE (type), index_type); |
2395 | return value_from_pointer (lookup_reference_type (slice_type), base); | |
2396 | } | |
2397 | ||
2398 | ||
2399 | static struct value * | |
2400 | ada_value_slice (struct value *array, int low, int high) | |
2401 | { | |
df407dfe | 2402 | struct type *type = value_type (array); |
6c038f32 | 2403 | struct type *index_type = |
0b5d8877 | 2404 | create_range_type (NULL, TYPE_INDEX_TYPE (type), low, high); |
6c038f32 | 2405 | struct type *slice_type = |
0b5d8877 | 2406 | create_array_type (NULL, TYPE_TARGET_TYPE (type), index_type); |
6c038f32 | 2407 | return value_cast (slice_type, value_slice (array, low, high - low + 1)); |
0b5d8877 PH |
2408 | } |
2409 | ||
14f9c5c9 AS |
2410 | /* If type is a record type in the form of a standard GNAT array |
2411 | descriptor, returns the number of dimensions for type. If arr is a | |
2412 | simple array, returns the number of "array of"s that prefix its | |
4c4b4cd2 | 2413 | type designation. Otherwise, returns 0. */ |
14f9c5c9 AS |
2414 | |
2415 | int | |
d2e4a39e | 2416 | ada_array_arity (struct type *type) |
14f9c5c9 AS |
2417 | { |
2418 | int arity; | |
2419 | ||
2420 | if (type == NULL) | |
2421 | return 0; | |
2422 | ||
2423 | type = desc_base_type (type); | |
2424 | ||
2425 | arity = 0; | |
d2e4a39e | 2426 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
14f9c5c9 | 2427 | return desc_arity (desc_bounds_type (type)); |
d2e4a39e AS |
2428 | else |
2429 | while (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
14f9c5c9 | 2430 | { |
4c4b4cd2 | 2431 | arity += 1; |
61ee279c | 2432 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
14f9c5c9 | 2433 | } |
d2e4a39e | 2434 | |
14f9c5c9 AS |
2435 | return arity; |
2436 | } | |
2437 | ||
2438 | /* If TYPE is a record type in the form of a standard GNAT array | |
2439 | descriptor or a simple array type, returns the element type for | |
2440 | TYPE after indexing by NINDICES indices, or by all indices if | |
4c4b4cd2 | 2441 | NINDICES is -1. Otherwise, returns NULL. */ |
14f9c5c9 | 2442 | |
d2e4a39e AS |
2443 | struct type * |
2444 | ada_array_element_type (struct type *type, int nindices) | |
14f9c5c9 AS |
2445 | { |
2446 | type = desc_base_type (type); | |
2447 | ||
d2e4a39e | 2448 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
14f9c5c9 AS |
2449 | { |
2450 | int k; | |
d2e4a39e | 2451 | struct type *p_array_type; |
14f9c5c9 AS |
2452 | |
2453 | p_array_type = desc_data_type (type); | |
2454 | ||
2455 | k = ada_array_arity (type); | |
2456 | if (k == 0) | |
4c4b4cd2 | 2457 | return NULL; |
d2e4a39e | 2458 | |
4c4b4cd2 | 2459 | /* Initially p_array_type = elt_type(*)[]...(k times)...[]. */ |
14f9c5c9 | 2460 | if (nindices >= 0 && k > nindices) |
4c4b4cd2 | 2461 | k = nindices; |
14f9c5c9 | 2462 | p_array_type = TYPE_TARGET_TYPE (p_array_type); |
d2e4a39e | 2463 | while (k > 0 && p_array_type != NULL) |
4c4b4cd2 | 2464 | { |
61ee279c | 2465 | p_array_type = ada_check_typedef (TYPE_TARGET_TYPE (p_array_type)); |
4c4b4cd2 PH |
2466 | k -= 1; |
2467 | } | |
14f9c5c9 AS |
2468 | return p_array_type; |
2469 | } | |
2470 | else if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
2471 | { | |
2472 | while (nindices != 0 && TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
4c4b4cd2 PH |
2473 | { |
2474 | type = TYPE_TARGET_TYPE (type); | |
2475 | nindices -= 1; | |
2476 | } | |
14f9c5c9 AS |
2477 | return type; |
2478 | } | |
2479 | ||
2480 | return NULL; | |
2481 | } | |
2482 | ||
4c4b4cd2 PH |
2483 | /* The type of nth index in arrays of given type (n numbering from 1). |
2484 | Does not examine memory. */ | |
14f9c5c9 | 2485 | |
d2e4a39e AS |
2486 | struct type * |
2487 | ada_index_type (struct type *type, int n) | |
14f9c5c9 | 2488 | { |
4c4b4cd2 PH |
2489 | struct type *result_type; |
2490 | ||
14f9c5c9 AS |
2491 | type = desc_base_type (type); |
2492 | ||
2493 | if (n > ada_array_arity (type)) | |
2494 | return NULL; | |
2495 | ||
4c4b4cd2 | 2496 | if (ada_is_simple_array_type (type)) |
14f9c5c9 AS |
2497 | { |
2498 | int i; | |
2499 | ||
2500 | for (i = 1; i < n; i += 1) | |
4c4b4cd2 PH |
2501 | type = TYPE_TARGET_TYPE (type); |
2502 | result_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0)); | |
2503 | /* FIXME: The stabs type r(0,0);bound;bound in an array type | |
2504 | has a target type of TYPE_CODE_UNDEF. We compensate here, but | |
76a01679 JB |
2505 | perhaps stabsread.c would make more sense. */ |
2506 | if (result_type == NULL || TYPE_CODE (result_type) == TYPE_CODE_UNDEF) | |
2507 | result_type = builtin_type_int; | |
14f9c5c9 | 2508 | |
4c4b4cd2 | 2509 | return result_type; |
14f9c5c9 | 2510 | } |
d2e4a39e | 2511 | else |
14f9c5c9 AS |
2512 | return desc_index_type (desc_bounds_type (type), n); |
2513 | } | |
2514 | ||
2515 | /* Given that arr is an array type, returns the lower bound of the | |
2516 | Nth index (numbering from 1) if WHICH is 0, and the upper bound if | |
4c4b4cd2 PH |
2517 | WHICH is 1. This returns bounds 0 .. -1 if ARR_TYPE is an |
2518 | array-descriptor type. If TYPEP is non-null, *TYPEP is set to the | |
2519 | bounds type. It works for other arrays with bounds supplied by | |
2520 | run-time quantities other than discriminants. */ | |
14f9c5c9 | 2521 | |
abb68b3e | 2522 | static LONGEST |
d2e4a39e | 2523 | ada_array_bound_from_type (struct type * arr_type, int n, int which, |
4c4b4cd2 | 2524 | struct type ** typep) |
14f9c5c9 | 2525 | { |
d2e4a39e AS |
2526 | struct type *type; |
2527 | struct type *index_type_desc; | |
14f9c5c9 AS |
2528 | |
2529 | if (ada_is_packed_array_type (arr_type)) | |
2530 | arr_type = decode_packed_array_type (arr_type); | |
2531 | ||
4c4b4cd2 | 2532 | if (arr_type == NULL || !ada_is_simple_array_type (arr_type)) |
14f9c5c9 AS |
2533 | { |
2534 | if (typep != NULL) | |
4c4b4cd2 | 2535 | *typep = builtin_type_int; |
d2e4a39e | 2536 | return (LONGEST) - which; |
14f9c5c9 AS |
2537 | } |
2538 | ||
2539 | if (TYPE_CODE (arr_type) == TYPE_CODE_PTR) | |
2540 | type = TYPE_TARGET_TYPE (arr_type); | |
2541 | else | |
2542 | type = arr_type; | |
2543 | ||
2544 | index_type_desc = ada_find_parallel_type (type, "___XA"); | |
d2e4a39e | 2545 | if (index_type_desc == NULL) |
14f9c5c9 | 2546 | { |
d2e4a39e | 2547 | struct type *index_type; |
14f9c5c9 | 2548 | |
d2e4a39e | 2549 | while (n > 1) |
4c4b4cd2 PH |
2550 | { |
2551 | type = TYPE_TARGET_TYPE (type); | |
2552 | n -= 1; | |
2553 | } | |
14f9c5c9 | 2554 | |
abb68b3e | 2555 | index_type = TYPE_INDEX_TYPE (type); |
14f9c5c9 | 2556 | if (typep != NULL) |
4c4b4cd2 | 2557 | *typep = index_type; |
abb68b3e JB |
2558 | |
2559 | /* The index type is either a range type or an enumerated type. | |
2560 | For the range type, we have some macros that allow us to | |
2561 | extract the value of the low and high bounds. But they | |
2562 | do now work for enumerated types. The expressions used | |
2563 | below work for both range and enum types. */ | |
d2e4a39e | 2564 | return |
4c4b4cd2 | 2565 | (LONGEST) (which == 0 |
abb68b3e JB |
2566 | ? TYPE_FIELD_BITPOS (index_type, 0) |
2567 | : TYPE_FIELD_BITPOS (index_type, | |
2568 | TYPE_NFIELDS (index_type) - 1)); | |
14f9c5c9 | 2569 | } |
d2e4a39e | 2570 | else |
14f9c5c9 | 2571 | { |
d2e4a39e | 2572 | struct type *index_type = |
4c4b4cd2 PH |
2573 | to_fixed_range_type (TYPE_FIELD_NAME (index_type_desc, n - 1), |
2574 | NULL, TYPE_OBJFILE (arr_type)); | |
abb68b3e | 2575 | |
14f9c5c9 | 2576 | if (typep != NULL) |
abb68b3e JB |
2577 | *typep = index_type; |
2578 | ||
d2e4a39e | 2579 | return |
4c4b4cd2 PH |
2580 | (LONGEST) (which == 0 |
2581 | ? TYPE_LOW_BOUND (index_type) | |
2582 | : TYPE_HIGH_BOUND (index_type)); | |
14f9c5c9 AS |
2583 | } |
2584 | } | |
2585 | ||
2586 | /* Given that arr is an array value, returns the lower bound of the | |
abb68b3e JB |
2587 | nth index (numbering from 1) if WHICH is 0, and the upper bound if |
2588 | WHICH is 1. This routine will also work for arrays with bounds | |
4c4b4cd2 | 2589 | supplied by run-time quantities other than discriminants. */ |
14f9c5c9 | 2590 | |
d2e4a39e | 2591 | struct value * |
4dc81987 | 2592 | ada_array_bound (struct value *arr, int n, int which) |
14f9c5c9 | 2593 | { |
df407dfe | 2594 | struct type *arr_type = value_type (arr); |
14f9c5c9 AS |
2595 | |
2596 | if (ada_is_packed_array_type (arr_type)) | |
2597 | return ada_array_bound (decode_packed_array (arr), n, which); | |
4c4b4cd2 | 2598 | else if (ada_is_simple_array_type (arr_type)) |
14f9c5c9 | 2599 | { |
d2e4a39e | 2600 | struct type *type; |
14f9c5c9 AS |
2601 | LONGEST v = ada_array_bound_from_type (arr_type, n, which, &type); |
2602 | return value_from_longest (type, v); | |
2603 | } | |
2604 | else | |
2605 | return desc_one_bound (desc_bounds (arr), n, which); | |
2606 | } | |
2607 | ||
2608 | /* Given that arr is an array value, returns the length of the | |
2609 | nth index. This routine will also work for arrays with bounds | |
4c4b4cd2 PH |
2610 | supplied by run-time quantities other than discriminants. |
2611 | Does not work for arrays indexed by enumeration types with representation | |
2612 | clauses at the moment. */ | |
14f9c5c9 | 2613 | |
d2e4a39e AS |
2614 | struct value * |
2615 | ada_array_length (struct value *arr, int n) | |
14f9c5c9 | 2616 | { |
df407dfe | 2617 | struct type *arr_type = ada_check_typedef (value_type (arr)); |
14f9c5c9 AS |
2618 | |
2619 | if (ada_is_packed_array_type (arr_type)) | |
2620 | return ada_array_length (decode_packed_array (arr), n); | |
2621 | ||
4c4b4cd2 | 2622 | if (ada_is_simple_array_type (arr_type)) |
14f9c5c9 | 2623 | { |
d2e4a39e | 2624 | struct type *type; |
14f9c5c9 | 2625 | LONGEST v = |
4c4b4cd2 PH |
2626 | ada_array_bound_from_type (arr_type, n, 1, &type) - |
2627 | ada_array_bound_from_type (arr_type, n, 0, NULL) + 1; | |
14f9c5c9 AS |
2628 | return value_from_longest (type, v); |
2629 | } | |
2630 | else | |
d2e4a39e | 2631 | return |
72d5681a | 2632 | value_from_longest (builtin_type_int, |
4c4b4cd2 PH |
2633 | value_as_long (desc_one_bound (desc_bounds (arr), |
2634 | n, 1)) | |
2635 | - value_as_long (desc_one_bound (desc_bounds (arr), | |
2636 | n, 0)) + 1); | |
2637 | } | |
2638 | ||
2639 | /* An empty array whose type is that of ARR_TYPE (an array type), | |
2640 | with bounds LOW to LOW-1. */ | |
2641 | ||
2642 | static struct value * | |
2643 | empty_array (struct type *arr_type, int low) | |
2644 | { | |
6c038f32 | 2645 | struct type *index_type = |
0b5d8877 PH |
2646 | create_range_type (NULL, TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (arr_type)), |
2647 | low, low - 1); | |
2648 | struct type *elt_type = ada_array_element_type (arr_type, 1); | |
2649 | return allocate_value (create_array_type (NULL, elt_type, index_type)); | |
14f9c5c9 | 2650 | } |
14f9c5c9 | 2651 | \f |
d2e4a39e | 2652 | |
4c4b4cd2 | 2653 | /* Name resolution */ |
14f9c5c9 | 2654 | |
4c4b4cd2 PH |
2655 | /* The "decoded" name for the user-definable Ada operator corresponding |
2656 | to OP. */ | |
14f9c5c9 | 2657 | |
d2e4a39e | 2658 | static const char * |
4c4b4cd2 | 2659 | ada_decoded_op_name (enum exp_opcode op) |
14f9c5c9 AS |
2660 | { |
2661 | int i; | |
2662 | ||
4c4b4cd2 | 2663 | for (i = 0; ada_opname_table[i].encoded != NULL; i += 1) |
14f9c5c9 AS |
2664 | { |
2665 | if (ada_opname_table[i].op == op) | |
4c4b4cd2 | 2666 | return ada_opname_table[i].decoded; |
14f9c5c9 | 2667 | } |
323e0a4a | 2668 | error (_("Could not find operator name for opcode")); |
14f9c5c9 AS |
2669 | } |
2670 | ||
2671 | ||
4c4b4cd2 PH |
2672 | /* Same as evaluate_type (*EXP), but resolves ambiguous symbol |
2673 | references (marked by OP_VAR_VALUE nodes in which the symbol has an | |
2674 | undefined namespace) and converts operators that are | |
2675 | user-defined into appropriate function calls. If CONTEXT_TYPE is | |
14f9c5c9 AS |
2676 | non-null, it provides a preferred result type [at the moment, only |
2677 | type void has any effect---causing procedures to be preferred over | |
2678 | functions in calls]. A null CONTEXT_TYPE indicates that a non-void | |
4c4b4cd2 | 2679 | return type is preferred. May change (expand) *EXP. */ |
14f9c5c9 | 2680 | |
4c4b4cd2 PH |
2681 | static void |
2682 | resolve (struct expression **expp, int void_context_p) | |
14f9c5c9 AS |
2683 | { |
2684 | int pc; | |
2685 | pc = 0; | |
4c4b4cd2 | 2686 | resolve_subexp (expp, &pc, 1, void_context_p ? builtin_type_void : NULL); |
14f9c5c9 AS |
2687 | } |
2688 | ||
4c4b4cd2 PH |
2689 | /* Resolve the operator of the subexpression beginning at |
2690 | position *POS of *EXPP. "Resolving" consists of replacing | |
2691 | the symbols that have undefined namespaces in OP_VAR_VALUE nodes | |
2692 | with their resolutions, replacing built-in operators with | |
2693 | function calls to user-defined operators, where appropriate, and, | |
2694 | when DEPROCEDURE_P is non-zero, converting function-valued variables | |
2695 | into parameterless calls. May expand *EXPP. The CONTEXT_TYPE functions | |
2696 | are as in ada_resolve, above. */ | |
14f9c5c9 | 2697 | |
d2e4a39e | 2698 | static struct value * |
4c4b4cd2 | 2699 | resolve_subexp (struct expression **expp, int *pos, int deprocedure_p, |
76a01679 | 2700 | struct type *context_type) |
14f9c5c9 AS |
2701 | { |
2702 | int pc = *pos; | |
2703 | int i; | |
4c4b4cd2 | 2704 | struct expression *exp; /* Convenience: == *expp. */ |
14f9c5c9 | 2705 | enum exp_opcode op = (*expp)->elts[pc].opcode; |
4c4b4cd2 PH |
2706 | struct value **argvec; /* Vector of operand types (alloca'ed). */ |
2707 | int nargs; /* Number of operands. */ | |
52ce6436 | 2708 | int oplen; |
14f9c5c9 AS |
2709 | |
2710 | argvec = NULL; | |
2711 | nargs = 0; | |
2712 | exp = *expp; | |
2713 | ||
52ce6436 PH |
2714 | /* Pass one: resolve operands, saving their types and updating *pos, |
2715 | if needed. */ | |
14f9c5c9 AS |
2716 | switch (op) |
2717 | { | |
4c4b4cd2 PH |
2718 | case OP_FUNCALL: |
2719 | if (exp->elts[pc + 3].opcode == OP_VAR_VALUE | |
76a01679 JB |
2720 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
2721 | *pos += 7; | |
4c4b4cd2 PH |
2722 | else |
2723 | { | |
2724 | *pos += 3; | |
2725 | resolve_subexp (expp, pos, 0, NULL); | |
2726 | } | |
2727 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
14f9c5c9 AS |
2728 | break; |
2729 | ||
14f9c5c9 | 2730 | case UNOP_ADDR: |
4c4b4cd2 PH |
2731 | *pos += 1; |
2732 | resolve_subexp (expp, pos, 0, NULL); | |
2733 | break; | |
2734 | ||
52ce6436 PH |
2735 | case UNOP_QUAL: |
2736 | *pos += 3; | |
2737 | resolve_subexp (expp, pos, 1, exp->elts[pc + 1].type); | |
4c4b4cd2 PH |
2738 | break; |
2739 | ||
52ce6436 | 2740 | case OP_ATR_MODULUS: |
4c4b4cd2 PH |
2741 | case OP_ATR_SIZE: |
2742 | case OP_ATR_TAG: | |
4c4b4cd2 PH |
2743 | case OP_ATR_FIRST: |
2744 | case OP_ATR_LAST: | |
2745 | case OP_ATR_LENGTH: | |
2746 | case OP_ATR_POS: | |
2747 | case OP_ATR_VAL: | |
4c4b4cd2 PH |
2748 | case OP_ATR_MIN: |
2749 | case OP_ATR_MAX: | |
52ce6436 PH |
2750 | case TERNOP_IN_RANGE: |
2751 | case BINOP_IN_BOUNDS: | |
2752 | case UNOP_IN_RANGE: | |
2753 | case OP_AGGREGATE: | |
2754 | case OP_OTHERS: | |
2755 | case OP_CHOICES: | |
2756 | case OP_POSITIONAL: | |
2757 | case OP_DISCRETE_RANGE: | |
2758 | case OP_NAME: | |
2759 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
2760 | *pos += oplen; | |
14f9c5c9 AS |
2761 | break; |
2762 | ||
2763 | case BINOP_ASSIGN: | |
2764 | { | |
4c4b4cd2 PH |
2765 | struct value *arg1; |
2766 | ||
2767 | *pos += 1; | |
2768 | arg1 = resolve_subexp (expp, pos, 0, NULL); | |
2769 | if (arg1 == NULL) | |
2770 | resolve_subexp (expp, pos, 1, NULL); | |
2771 | else | |
df407dfe | 2772 | resolve_subexp (expp, pos, 1, value_type (arg1)); |
4c4b4cd2 | 2773 | break; |
14f9c5c9 AS |
2774 | } |
2775 | ||
4c4b4cd2 | 2776 | case UNOP_CAST: |
4c4b4cd2 PH |
2777 | *pos += 3; |
2778 | nargs = 1; | |
2779 | break; | |
14f9c5c9 | 2780 | |
4c4b4cd2 PH |
2781 | case BINOP_ADD: |
2782 | case BINOP_SUB: | |
2783 | case BINOP_MUL: | |
2784 | case BINOP_DIV: | |
2785 | case BINOP_REM: | |
2786 | case BINOP_MOD: | |
2787 | case BINOP_EXP: | |
2788 | case BINOP_CONCAT: | |
2789 | case BINOP_LOGICAL_AND: | |
2790 | case BINOP_LOGICAL_OR: | |
2791 | case BINOP_BITWISE_AND: | |
2792 | case BINOP_BITWISE_IOR: | |
2793 | case BINOP_BITWISE_XOR: | |
14f9c5c9 | 2794 | |
4c4b4cd2 PH |
2795 | case BINOP_EQUAL: |
2796 | case BINOP_NOTEQUAL: | |
2797 | case BINOP_LESS: | |
2798 | case BINOP_GTR: | |
2799 | case BINOP_LEQ: | |
2800 | case BINOP_GEQ: | |
14f9c5c9 | 2801 | |
4c4b4cd2 PH |
2802 | case BINOP_REPEAT: |
2803 | case BINOP_SUBSCRIPT: | |
2804 | case BINOP_COMMA: | |
40c8aaa9 JB |
2805 | *pos += 1; |
2806 | nargs = 2; | |
2807 | break; | |
14f9c5c9 | 2808 | |
4c4b4cd2 PH |
2809 | case UNOP_NEG: |
2810 | case UNOP_PLUS: | |
2811 | case UNOP_LOGICAL_NOT: | |
2812 | case UNOP_ABS: | |
2813 | case UNOP_IND: | |
2814 | *pos += 1; | |
2815 | nargs = 1; | |
2816 | break; | |
14f9c5c9 | 2817 | |
4c4b4cd2 PH |
2818 | case OP_LONG: |
2819 | case OP_DOUBLE: | |
2820 | case OP_VAR_VALUE: | |
2821 | *pos += 4; | |
2822 | break; | |
14f9c5c9 | 2823 | |
4c4b4cd2 PH |
2824 | case OP_TYPE: |
2825 | case OP_BOOL: | |
2826 | case OP_LAST: | |
4c4b4cd2 PH |
2827 | case OP_INTERNALVAR: |
2828 | *pos += 3; | |
2829 | break; | |
14f9c5c9 | 2830 | |
4c4b4cd2 PH |
2831 | case UNOP_MEMVAL: |
2832 | *pos += 3; | |
2833 | nargs = 1; | |
2834 | break; | |
2835 | ||
67f3407f DJ |
2836 | case OP_REGISTER: |
2837 | *pos += 4 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1); | |
2838 | break; | |
2839 | ||
4c4b4cd2 PH |
2840 | case STRUCTOP_STRUCT: |
2841 | *pos += 4 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1); | |
2842 | nargs = 1; | |
2843 | break; | |
2844 | ||
4c4b4cd2 | 2845 | case TERNOP_SLICE: |
4c4b4cd2 PH |
2846 | *pos += 1; |
2847 | nargs = 3; | |
2848 | break; | |
2849 | ||
52ce6436 | 2850 | case OP_STRING: |
14f9c5c9 | 2851 | break; |
4c4b4cd2 PH |
2852 | |
2853 | default: | |
323e0a4a | 2854 | error (_("Unexpected operator during name resolution")); |
14f9c5c9 AS |
2855 | } |
2856 | ||
76a01679 | 2857 | argvec = (struct value * *) alloca (sizeof (struct value *) * (nargs + 1)); |
4c4b4cd2 PH |
2858 | for (i = 0; i < nargs; i += 1) |
2859 | argvec[i] = resolve_subexp (expp, pos, 1, NULL); | |
2860 | argvec[i] = NULL; | |
2861 | exp = *expp; | |
2862 | ||
2863 | /* Pass two: perform any resolution on principal operator. */ | |
14f9c5c9 AS |
2864 | switch (op) |
2865 | { | |
2866 | default: | |
2867 | break; | |
2868 | ||
14f9c5c9 | 2869 | case OP_VAR_VALUE: |
4c4b4cd2 | 2870 | if (SYMBOL_DOMAIN (exp->elts[pc + 2].symbol) == UNDEF_DOMAIN) |
76a01679 JB |
2871 | { |
2872 | struct ada_symbol_info *candidates; | |
2873 | int n_candidates; | |
2874 | ||
2875 | n_candidates = | |
2876 | ada_lookup_symbol_list (SYMBOL_LINKAGE_NAME | |
2877 | (exp->elts[pc + 2].symbol), | |
2878 | exp->elts[pc + 1].block, VAR_DOMAIN, | |
2879 | &candidates); | |
2880 | ||
2881 | if (n_candidates > 1) | |
2882 | { | |
2883 | /* Types tend to get re-introduced locally, so if there | |
2884 | are any local symbols that are not types, first filter | |
2885 | out all types. */ | |
2886 | int j; | |
2887 | for (j = 0; j < n_candidates; j += 1) | |
2888 | switch (SYMBOL_CLASS (candidates[j].sym)) | |
2889 | { | |
2890 | case LOC_REGISTER: | |
2891 | case LOC_ARG: | |
2892 | case LOC_REF_ARG: | |
2893 | case LOC_REGPARM: | |
2894 | case LOC_REGPARM_ADDR: | |
2895 | case LOC_LOCAL: | |
2896 | case LOC_LOCAL_ARG: | |
2897 | case LOC_BASEREG: | |
2898 | case LOC_BASEREG_ARG: | |
2899 | case LOC_COMPUTED: | |
2900 | case LOC_COMPUTED_ARG: | |
2901 | goto FoundNonType; | |
2902 | default: | |
2903 | break; | |
2904 | } | |
2905 | FoundNonType: | |
2906 | if (j < n_candidates) | |
2907 | { | |
2908 | j = 0; | |
2909 | while (j < n_candidates) | |
2910 | { | |
2911 | if (SYMBOL_CLASS (candidates[j].sym) == LOC_TYPEDEF) | |
2912 | { | |
2913 | candidates[j] = candidates[n_candidates - 1]; | |
2914 | n_candidates -= 1; | |
2915 | } | |
2916 | else | |
2917 | j += 1; | |
2918 | } | |
2919 | } | |
2920 | } | |
2921 | ||
2922 | if (n_candidates == 0) | |
323e0a4a | 2923 | error (_("No definition found for %s"), |
76a01679 JB |
2924 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
2925 | else if (n_candidates == 1) | |
2926 | i = 0; | |
2927 | else if (deprocedure_p | |
2928 | && !is_nonfunction (candidates, n_candidates)) | |
2929 | { | |
06d5cf63 JB |
2930 | i = ada_resolve_function |
2931 | (candidates, n_candidates, NULL, 0, | |
2932 | SYMBOL_LINKAGE_NAME (exp->elts[pc + 2].symbol), | |
2933 | context_type); | |
76a01679 | 2934 | if (i < 0) |
323e0a4a | 2935 | error (_("Could not find a match for %s"), |
76a01679 JB |
2936 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
2937 | } | |
2938 | else | |
2939 | { | |
323e0a4a | 2940 | printf_filtered (_("Multiple matches for %s\n"), |
76a01679 JB |
2941 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
2942 | user_select_syms (candidates, n_candidates, 1); | |
2943 | i = 0; | |
2944 | } | |
2945 | ||
2946 | exp->elts[pc + 1].block = candidates[i].block; | |
2947 | exp->elts[pc + 2].symbol = candidates[i].sym; | |
1265e4aa JB |
2948 | if (innermost_block == NULL |
2949 | || contained_in (candidates[i].block, innermost_block)) | |
76a01679 JB |
2950 | innermost_block = candidates[i].block; |
2951 | } | |
2952 | ||
2953 | if (deprocedure_p | |
2954 | && (TYPE_CODE (SYMBOL_TYPE (exp->elts[pc + 2].symbol)) | |
2955 | == TYPE_CODE_FUNC)) | |
2956 | { | |
2957 | replace_operator_with_call (expp, pc, 0, 0, | |
2958 | exp->elts[pc + 2].symbol, | |
2959 | exp->elts[pc + 1].block); | |
2960 | exp = *expp; | |
2961 | } | |
14f9c5c9 AS |
2962 | break; |
2963 | ||
2964 | case OP_FUNCALL: | |
2965 | { | |
4c4b4cd2 | 2966 | if (exp->elts[pc + 3].opcode == OP_VAR_VALUE |
76a01679 | 2967 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
4c4b4cd2 PH |
2968 | { |
2969 | struct ada_symbol_info *candidates; | |
2970 | int n_candidates; | |
2971 | ||
2972 | n_candidates = | |
76a01679 JB |
2973 | ada_lookup_symbol_list (SYMBOL_LINKAGE_NAME |
2974 | (exp->elts[pc + 5].symbol), | |
2975 | exp->elts[pc + 4].block, VAR_DOMAIN, | |
2976 | &candidates); | |
4c4b4cd2 PH |
2977 | if (n_candidates == 1) |
2978 | i = 0; | |
2979 | else | |
2980 | { | |
06d5cf63 JB |
2981 | i = ada_resolve_function |
2982 | (candidates, n_candidates, | |
2983 | argvec, nargs, | |
2984 | SYMBOL_LINKAGE_NAME (exp->elts[pc + 5].symbol), | |
2985 | context_type); | |
4c4b4cd2 | 2986 | if (i < 0) |
323e0a4a | 2987 | error (_("Could not find a match for %s"), |
4c4b4cd2 PH |
2988 | SYMBOL_PRINT_NAME (exp->elts[pc + 5].symbol)); |
2989 | } | |
2990 | ||
2991 | exp->elts[pc + 4].block = candidates[i].block; | |
2992 | exp->elts[pc + 5].symbol = candidates[i].sym; | |
1265e4aa JB |
2993 | if (innermost_block == NULL |
2994 | || contained_in (candidates[i].block, innermost_block)) | |
4c4b4cd2 PH |
2995 | innermost_block = candidates[i].block; |
2996 | } | |
14f9c5c9 AS |
2997 | } |
2998 | break; | |
2999 | case BINOP_ADD: | |
3000 | case BINOP_SUB: | |
3001 | case BINOP_MUL: | |
3002 | case BINOP_DIV: | |
3003 | case BINOP_REM: | |
3004 | case BINOP_MOD: | |
3005 | case BINOP_CONCAT: | |
3006 | case BINOP_BITWISE_AND: | |
3007 | case BINOP_BITWISE_IOR: | |
3008 | case BINOP_BITWISE_XOR: | |
3009 | case BINOP_EQUAL: | |
3010 | case BINOP_NOTEQUAL: | |
3011 | case BINOP_LESS: | |
3012 | case BINOP_GTR: | |
3013 | case BINOP_LEQ: | |
3014 | case BINOP_GEQ: | |
3015 | case BINOP_EXP: | |
3016 | case UNOP_NEG: | |
3017 | case UNOP_PLUS: | |
3018 | case UNOP_LOGICAL_NOT: | |
3019 | case UNOP_ABS: | |
3020 | if (possible_user_operator_p (op, argvec)) | |
4c4b4cd2 PH |
3021 | { |
3022 | struct ada_symbol_info *candidates; | |
3023 | int n_candidates; | |
3024 | ||
3025 | n_candidates = | |
3026 | ada_lookup_symbol_list (ada_encode (ada_decoded_op_name (op)), | |
3027 | (struct block *) NULL, VAR_DOMAIN, | |
3028 | &candidates); | |
3029 | i = ada_resolve_function (candidates, n_candidates, argvec, nargs, | |
76a01679 | 3030 | ada_decoded_op_name (op), NULL); |
4c4b4cd2 PH |
3031 | if (i < 0) |
3032 | break; | |
3033 | ||
76a01679 JB |
3034 | replace_operator_with_call (expp, pc, nargs, 1, |
3035 | candidates[i].sym, candidates[i].block); | |
4c4b4cd2 PH |
3036 | exp = *expp; |
3037 | } | |
14f9c5c9 | 3038 | break; |
4c4b4cd2 PH |
3039 | |
3040 | case OP_TYPE: | |
b3dbf008 | 3041 | case OP_REGISTER: |
4c4b4cd2 | 3042 | return NULL; |
14f9c5c9 AS |
3043 | } |
3044 | ||
3045 | *pos = pc; | |
3046 | return evaluate_subexp_type (exp, pos); | |
3047 | } | |
3048 | ||
3049 | /* Return non-zero if formal type FTYPE matches actual type ATYPE. If | |
4c4b4cd2 PH |
3050 | MAY_DEREF is non-zero, the formal may be a pointer and the actual |
3051 | a non-pointer. A type of 'void' (which is never a valid expression type) | |
3052 | by convention matches anything. */ | |
14f9c5c9 | 3053 | /* The term "match" here is rather loose. The match is heuristic and |
4c4b4cd2 | 3054 | liberal. FIXME: TOO liberal, in fact. */ |
14f9c5c9 AS |
3055 | |
3056 | static int | |
4dc81987 | 3057 | ada_type_match (struct type *ftype, struct type *atype, int may_deref) |
14f9c5c9 | 3058 | { |
61ee279c PH |
3059 | ftype = ada_check_typedef (ftype); |
3060 | atype = ada_check_typedef (atype); | |
14f9c5c9 AS |
3061 | |
3062 | if (TYPE_CODE (ftype) == TYPE_CODE_REF) | |
3063 | ftype = TYPE_TARGET_TYPE (ftype); | |
3064 | if (TYPE_CODE (atype) == TYPE_CODE_REF) | |
3065 | atype = TYPE_TARGET_TYPE (atype); | |
3066 | ||
d2e4a39e | 3067 | if (TYPE_CODE (ftype) == TYPE_CODE_VOID |
14f9c5c9 AS |
3068 | || TYPE_CODE (atype) == TYPE_CODE_VOID) |
3069 | return 1; | |
3070 | ||
d2e4a39e | 3071 | switch (TYPE_CODE (ftype)) |
14f9c5c9 AS |
3072 | { |
3073 | default: | |
3074 | return 1; | |
3075 | case TYPE_CODE_PTR: | |
3076 | if (TYPE_CODE (atype) == TYPE_CODE_PTR) | |
4c4b4cd2 PH |
3077 | return ada_type_match (TYPE_TARGET_TYPE (ftype), |
3078 | TYPE_TARGET_TYPE (atype), 0); | |
d2e4a39e | 3079 | else |
1265e4aa JB |
3080 | return (may_deref |
3081 | && ada_type_match (TYPE_TARGET_TYPE (ftype), atype, 0)); | |
14f9c5c9 AS |
3082 | case TYPE_CODE_INT: |
3083 | case TYPE_CODE_ENUM: | |
3084 | case TYPE_CODE_RANGE: | |
3085 | switch (TYPE_CODE (atype)) | |
4c4b4cd2 PH |
3086 | { |
3087 | case TYPE_CODE_INT: | |
3088 | case TYPE_CODE_ENUM: | |
3089 | case TYPE_CODE_RANGE: | |
3090 | return 1; | |
3091 | default: | |
3092 | return 0; | |
3093 | } | |
14f9c5c9 AS |
3094 | |
3095 | case TYPE_CODE_ARRAY: | |
d2e4a39e | 3096 | return (TYPE_CODE (atype) == TYPE_CODE_ARRAY |
4c4b4cd2 | 3097 | || ada_is_array_descriptor_type (atype)); |
14f9c5c9 AS |
3098 | |
3099 | case TYPE_CODE_STRUCT: | |
4c4b4cd2 PH |
3100 | if (ada_is_array_descriptor_type (ftype)) |
3101 | return (TYPE_CODE (atype) == TYPE_CODE_ARRAY | |
3102 | || ada_is_array_descriptor_type (atype)); | |
14f9c5c9 | 3103 | else |
4c4b4cd2 PH |
3104 | return (TYPE_CODE (atype) == TYPE_CODE_STRUCT |
3105 | && !ada_is_array_descriptor_type (atype)); | |
14f9c5c9 AS |
3106 | |
3107 | case TYPE_CODE_UNION: | |
3108 | case TYPE_CODE_FLT: | |
3109 | return (TYPE_CODE (atype) == TYPE_CODE (ftype)); | |
3110 | } | |
3111 | } | |
3112 | ||
3113 | /* Return non-zero if the formals of FUNC "sufficiently match" the | |
3114 | vector of actual argument types ACTUALS of size N_ACTUALS. FUNC | |
3115 | may also be an enumeral, in which case it is treated as a 0- | |
4c4b4cd2 | 3116 | argument function. */ |
14f9c5c9 AS |
3117 | |
3118 | static int | |
d2e4a39e | 3119 | ada_args_match (struct symbol *func, struct value **actuals, int n_actuals) |
14f9c5c9 AS |
3120 | { |
3121 | int i; | |
d2e4a39e | 3122 | struct type *func_type = SYMBOL_TYPE (func); |
14f9c5c9 | 3123 | |
1265e4aa JB |
3124 | if (SYMBOL_CLASS (func) == LOC_CONST |
3125 | && TYPE_CODE (func_type) == TYPE_CODE_ENUM) | |
14f9c5c9 AS |
3126 | return (n_actuals == 0); |
3127 | else if (func_type == NULL || TYPE_CODE (func_type) != TYPE_CODE_FUNC) | |
3128 | return 0; | |
3129 | ||
3130 | if (TYPE_NFIELDS (func_type) != n_actuals) | |
3131 | return 0; | |
3132 | ||
3133 | for (i = 0; i < n_actuals; i += 1) | |
3134 | { | |
4c4b4cd2 | 3135 | if (actuals[i] == NULL) |
76a01679 JB |
3136 | return 0; |
3137 | else | |
3138 | { | |
61ee279c | 3139 | struct type *ftype = ada_check_typedef (TYPE_FIELD_TYPE (func_type, i)); |
df407dfe | 3140 | struct type *atype = ada_check_typedef (value_type (actuals[i])); |
4c4b4cd2 | 3141 | |
76a01679 JB |
3142 | if (!ada_type_match (ftype, atype, 1)) |
3143 | return 0; | |
3144 | } | |
14f9c5c9 AS |
3145 | } |
3146 | return 1; | |
3147 | } | |
3148 | ||
3149 | /* False iff function type FUNC_TYPE definitely does not produce a value | |
3150 | compatible with type CONTEXT_TYPE. Conservatively returns 1 if | |
3151 | FUNC_TYPE is not a valid function type with a non-null return type | |
3152 | or an enumerated type. A null CONTEXT_TYPE indicates any non-void type. */ | |
3153 | ||
3154 | static int | |
d2e4a39e | 3155 | return_match (struct type *func_type, struct type *context_type) |
14f9c5c9 | 3156 | { |
d2e4a39e | 3157 | struct type *return_type; |
14f9c5c9 AS |
3158 | |
3159 | if (func_type == NULL) | |
3160 | return 1; | |
3161 | ||
4c4b4cd2 PH |
3162 | if (TYPE_CODE (func_type) == TYPE_CODE_FUNC) |
3163 | return_type = base_type (TYPE_TARGET_TYPE (func_type)); | |
3164 | else | |
3165 | return_type = base_type (func_type); | |
14f9c5c9 AS |
3166 | if (return_type == NULL) |
3167 | return 1; | |
3168 | ||
4c4b4cd2 | 3169 | context_type = base_type (context_type); |
14f9c5c9 AS |
3170 | |
3171 | if (TYPE_CODE (return_type) == TYPE_CODE_ENUM) | |
3172 | return context_type == NULL || return_type == context_type; | |
3173 | else if (context_type == NULL) | |
3174 | return TYPE_CODE (return_type) != TYPE_CODE_VOID; | |
3175 | else | |
3176 | return TYPE_CODE (return_type) == TYPE_CODE (context_type); | |
3177 | } | |
3178 | ||
3179 | ||
4c4b4cd2 | 3180 | /* Returns the index in SYMS[0..NSYMS-1] that contains the symbol for the |
14f9c5c9 | 3181 | function (if any) that matches the types of the NARGS arguments in |
4c4b4cd2 PH |
3182 | ARGS. If CONTEXT_TYPE is non-null and there is at least one match |
3183 | that returns that type, then eliminate matches that don't. If | |
3184 | CONTEXT_TYPE is void and there is at least one match that does not | |
3185 | return void, eliminate all matches that do. | |
3186 | ||
14f9c5c9 AS |
3187 | Asks the user if there is more than one match remaining. Returns -1 |
3188 | if there is no such symbol or none is selected. NAME is used | |
4c4b4cd2 PH |
3189 | solely for messages. May re-arrange and modify SYMS in |
3190 | the process; the index returned is for the modified vector. */ | |
14f9c5c9 | 3191 | |
4c4b4cd2 PH |
3192 | static int |
3193 | ada_resolve_function (struct ada_symbol_info syms[], | |
3194 | int nsyms, struct value **args, int nargs, | |
3195 | const char *name, struct type *context_type) | |
14f9c5c9 AS |
3196 | { |
3197 | int k; | |
4c4b4cd2 | 3198 | int m; /* Number of hits */ |
d2e4a39e AS |
3199 | struct type *fallback; |
3200 | struct type *return_type; | |
14f9c5c9 AS |
3201 | |
3202 | return_type = context_type; | |
3203 | if (context_type == NULL) | |
3204 | fallback = builtin_type_void; | |
3205 | else | |
3206 | fallback = NULL; | |
3207 | ||
d2e4a39e | 3208 | m = 0; |
14f9c5c9 AS |
3209 | while (1) |
3210 | { | |
3211 | for (k = 0; k < nsyms; k += 1) | |
4c4b4cd2 | 3212 | { |
61ee279c | 3213 | struct type *type = ada_check_typedef (SYMBOL_TYPE (syms[k].sym)); |
4c4b4cd2 PH |
3214 | |
3215 | if (ada_args_match (syms[k].sym, args, nargs) | |
3216 | && return_match (type, return_type)) | |
3217 | { | |
3218 | syms[m] = syms[k]; | |
3219 | m += 1; | |
3220 | } | |
3221 | } | |
14f9c5c9 | 3222 | if (m > 0 || return_type == fallback) |
4c4b4cd2 | 3223 | break; |
14f9c5c9 | 3224 | else |
4c4b4cd2 | 3225 | return_type = fallback; |
14f9c5c9 AS |
3226 | } |
3227 | ||
3228 | if (m == 0) | |
3229 | return -1; | |
3230 | else if (m > 1) | |
3231 | { | |
323e0a4a | 3232 | printf_filtered (_("Multiple matches for %s\n"), name); |
4c4b4cd2 | 3233 | user_select_syms (syms, m, 1); |
14f9c5c9 AS |
3234 | return 0; |
3235 | } | |
3236 | return 0; | |
3237 | } | |
3238 | ||
4c4b4cd2 PH |
3239 | /* Returns true (non-zero) iff decoded name N0 should appear before N1 |
3240 | in a listing of choices during disambiguation (see sort_choices, below). | |
3241 | The idea is that overloadings of a subprogram name from the | |
3242 | same package should sort in their source order. We settle for ordering | |
3243 | such symbols by their trailing number (__N or $N). */ | |
3244 | ||
14f9c5c9 | 3245 | static int |
4c4b4cd2 | 3246 | encoded_ordered_before (char *N0, char *N1) |
14f9c5c9 AS |
3247 | { |
3248 | if (N1 == NULL) | |
3249 | return 0; | |
3250 | else if (N0 == NULL) | |
3251 | return 1; | |
3252 | else | |
3253 | { | |
3254 | int k0, k1; | |
d2e4a39e | 3255 | for (k0 = strlen (N0) - 1; k0 > 0 && isdigit (N0[k0]); k0 -= 1) |
4c4b4cd2 | 3256 | ; |
d2e4a39e | 3257 | for (k1 = strlen (N1) - 1; k1 > 0 && isdigit (N1[k1]); k1 -= 1) |
4c4b4cd2 | 3258 | ; |
d2e4a39e | 3259 | if ((N0[k0] == '_' || N0[k0] == '$') && N0[k0 + 1] != '\000' |
4c4b4cd2 PH |
3260 | && (N1[k1] == '_' || N1[k1] == '$') && N1[k1 + 1] != '\000') |
3261 | { | |
3262 | int n0, n1; | |
3263 | n0 = k0; | |
3264 | while (N0[n0] == '_' && n0 > 0 && N0[n0 - 1] == '_') | |
3265 | n0 -= 1; | |
3266 | n1 = k1; | |
3267 | while (N1[n1] == '_' && n1 > 0 && N1[n1 - 1] == '_') | |
3268 | n1 -= 1; | |
3269 | if (n0 == n1 && strncmp (N0, N1, n0) == 0) | |
3270 | return (atoi (N0 + k0 + 1) < atoi (N1 + k1 + 1)); | |
3271 | } | |
14f9c5c9 AS |
3272 | return (strcmp (N0, N1) < 0); |
3273 | } | |
3274 | } | |
d2e4a39e | 3275 | |
4c4b4cd2 PH |
3276 | /* Sort SYMS[0..NSYMS-1] to put the choices in a canonical order by the |
3277 | encoded names. */ | |
3278 | ||
d2e4a39e | 3279 | static void |
4c4b4cd2 | 3280 | sort_choices (struct ada_symbol_info syms[], int nsyms) |
14f9c5c9 | 3281 | { |
4c4b4cd2 | 3282 | int i; |
d2e4a39e | 3283 | for (i = 1; i < nsyms; i += 1) |
14f9c5c9 | 3284 | { |
4c4b4cd2 | 3285 | struct ada_symbol_info sym = syms[i]; |
14f9c5c9 AS |
3286 | int j; |
3287 | ||
d2e4a39e | 3288 | for (j = i - 1; j >= 0; j -= 1) |
4c4b4cd2 PH |
3289 | { |
3290 | if (encoded_ordered_before (SYMBOL_LINKAGE_NAME (syms[j].sym), | |
3291 | SYMBOL_LINKAGE_NAME (sym.sym))) | |
3292 | break; | |
3293 | syms[j + 1] = syms[j]; | |
3294 | } | |
d2e4a39e | 3295 | syms[j + 1] = sym; |
14f9c5c9 AS |
3296 | } |
3297 | } | |
3298 | ||
4c4b4cd2 PH |
3299 | /* Given a list of NSYMS symbols in SYMS, select up to MAX_RESULTS>0 |
3300 | by asking the user (if necessary), returning the number selected, | |
3301 | and setting the first elements of SYMS items. Error if no symbols | |
3302 | selected. */ | |
14f9c5c9 AS |
3303 | |
3304 | /* NOTE: Adapted from decode_line_2 in symtab.c, with which it ought | |
4c4b4cd2 | 3305 | to be re-integrated one of these days. */ |
14f9c5c9 AS |
3306 | |
3307 | int | |
4c4b4cd2 | 3308 | user_select_syms (struct ada_symbol_info *syms, int nsyms, int max_results) |
14f9c5c9 AS |
3309 | { |
3310 | int i; | |
d2e4a39e | 3311 | int *chosen = (int *) alloca (sizeof (int) * nsyms); |
14f9c5c9 AS |
3312 | int n_chosen; |
3313 | int first_choice = (max_results == 1) ? 1 : 2; | |
717d2f5a | 3314 | const char *select_mode = multiple_symbols_select_mode (); |
14f9c5c9 AS |
3315 | |
3316 | if (max_results < 1) | |
323e0a4a | 3317 | error (_("Request to select 0 symbols!")); |
14f9c5c9 AS |
3318 | if (nsyms <= 1) |
3319 | return nsyms; | |
3320 | ||
717d2f5a JB |
3321 | if (select_mode == multiple_symbols_cancel) |
3322 | error (_("\ | |
3323 | canceled because the command is ambiguous\n\ | |
3324 | See set/show multiple-symbol.")); | |
3325 | ||
3326 | /* If select_mode is "all", then return all possible symbols. | |
3327 | Only do that if more than one symbol can be selected, of course. | |
3328 | Otherwise, display the menu as usual. */ | |
3329 | if (select_mode == multiple_symbols_all && max_results > 1) | |
3330 | return nsyms; | |
3331 | ||
323e0a4a | 3332 | printf_unfiltered (_("[0] cancel\n")); |
14f9c5c9 | 3333 | if (max_results > 1) |
323e0a4a | 3334 | printf_unfiltered (_("[1] all\n")); |
14f9c5c9 | 3335 | |
4c4b4cd2 | 3336 | sort_choices (syms, nsyms); |
14f9c5c9 AS |
3337 | |
3338 | for (i = 0; i < nsyms; i += 1) | |
3339 | { | |
4c4b4cd2 PH |
3340 | if (syms[i].sym == NULL) |
3341 | continue; | |
3342 | ||
3343 | if (SYMBOL_CLASS (syms[i].sym) == LOC_BLOCK) | |
3344 | { | |
76a01679 JB |
3345 | struct symtab_and_line sal = |
3346 | find_function_start_sal (syms[i].sym, 1); | |
323e0a4a AC |
3347 | if (sal.symtab == NULL) |
3348 | printf_unfiltered (_("[%d] %s at <no source file available>:%d\n"), | |
3349 | i + first_choice, | |
3350 | SYMBOL_PRINT_NAME (syms[i].sym), | |
3351 | sal.line); | |
3352 | else | |
3353 | printf_unfiltered (_("[%d] %s at %s:%d\n"), i + first_choice, | |
3354 | SYMBOL_PRINT_NAME (syms[i].sym), | |
3355 | sal.symtab->filename, sal.line); | |
4c4b4cd2 PH |
3356 | continue; |
3357 | } | |
d2e4a39e | 3358 | else |
4c4b4cd2 PH |
3359 | { |
3360 | int is_enumeral = | |
3361 | (SYMBOL_CLASS (syms[i].sym) == LOC_CONST | |
3362 | && SYMBOL_TYPE (syms[i].sym) != NULL | |
3363 | && TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) == TYPE_CODE_ENUM); | |
3364 | struct symtab *symtab = symtab_for_sym (syms[i].sym); | |
3365 | ||
3366 | if (SYMBOL_LINE (syms[i].sym) != 0 && symtab != NULL) | |
323e0a4a | 3367 | printf_unfiltered (_("[%d] %s at %s:%d\n"), |
4c4b4cd2 PH |
3368 | i + first_choice, |
3369 | SYMBOL_PRINT_NAME (syms[i].sym), | |
3370 | symtab->filename, SYMBOL_LINE (syms[i].sym)); | |
76a01679 JB |
3371 | else if (is_enumeral |
3372 | && TYPE_NAME (SYMBOL_TYPE (syms[i].sym)) != NULL) | |
4c4b4cd2 | 3373 | { |
a3f17187 | 3374 | printf_unfiltered (("[%d] "), i + first_choice); |
76a01679 JB |
3375 | ada_print_type (SYMBOL_TYPE (syms[i].sym), NULL, |
3376 | gdb_stdout, -1, 0); | |
323e0a4a | 3377 | printf_unfiltered (_("'(%s) (enumeral)\n"), |
4c4b4cd2 PH |
3378 | SYMBOL_PRINT_NAME (syms[i].sym)); |
3379 | } | |
3380 | else if (symtab != NULL) | |
3381 | printf_unfiltered (is_enumeral | |
323e0a4a AC |
3382 | ? _("[%d] %s in %s (enumeral)\n") |
3383 | : _("[%d] %s at %s:?\n"), | |
4c4b4cd2 PH |
3384 | i + first_choice, |
3385 | SYMBOL_PRINT_NAME (syms[i].sym), | |
3386 | symtab->filename); | |
3387 | else | |
3388 | printf_unfiltered (is_enumeral | |
323e0a4a AC |
3389 | ? _("[%d] %s (enumeral)\n") |
3390 | : _("[%d] %s at ?\n"), | |
4c4b4cd2 PH |
3391 | i + first_choice, |
3392 | SYMBOL_PRINT_NAME (syms[i].sym)); | |
3393 | } | |
14f9c5c9 | 3394 | } |
d2e4a39e | 3395 | |
14f9c5c9 | 3396 | n_chosen = get_selections (chosen, nsyms, max_results, max_results > 1, |
4c4b4cd2 | 3397 | "overload-choice"); |
14f9c5c9 AS |
3398 | |
3399 | for (i = 0; i < n_chosen; i += 1) | |
4c4b4cd2 | 3400 | syms[i] = syms[chosen[i]]; |
14f9c5c9 AS |
3401 | |
3402 | return n_chosen; | |
3403 | } | |
3404 | ||
3405 | /* Read and validate a set of numeric choices from the user in the | |
4c4b4cd2 | 3406 | range 0 .. N_CHOICES-1. Place the results in increasing |
14f9c5c9 AS |
3407 | order in CHOICES[0 .. N-1], and return N. |
3408 | ||
3409 | The user types choices as a sequence of numbers on one line | |
3410 | separated by blanks, encoding them as follows: | |
3411 | ||
4c4b4cd2 | 3412 | + A choice of 0 means to cancel the selection, throwing an error. |
14f9c5c9 AS |
3413 | + If IS_ALL_CHOICE, a choice of 1 selects the entire set 0 .. N_CHOICES-1. |
3414 | + The user chooses k by typing k+IS_ALL_CHOICE+1. | |
3415 | ||
4c4b4cd2 | 3416 | The user is not allowed to choose more than MAX_RESULTS values. |
14f9c5c9 AS |
3417 | |
3418 | ANNOTATION_SUFFIX, if present, is used to annotate the input | |
4c4b4cd2 | 3419 | prompts (for use with the -f switch). */ |
14f9c5c9 AS |
3420 | |
3421 | int | |
d2e4a39e | 3422 | get_selections (int *choices, int n_choices, int max_results, |
4c4b4cd2 | 3423 | int is_all_choice, char *annotation_suffix) |
14f9c5c9 | 3424 | { |
d2e4a39e | 3425 | char *args; |
0bcd0149 | 3426 | char *prompt; |
14f9c5c9 AS |
3427 | int n_chosen; |
3428 | int first_choice = is_all_choice ? 2 : 1; | |
d2e4a39e | 3429 | |
14f9c5c9 AS |
3430 | prompt = getenv ("PS2"); |
3431 | if (prompt == NULL) | |
0bcd0149 | 3432 | prompt = "> "; |
14f9c5c9 | 3433 | |
0bcd0149 | 3434 | args = command_line_input (prompt, 0, annotation_suffix); |
d2e4a39e | 3435 | |
14f9c5c9 | 3436 | if (args == NULL) |
323e0a4a | 3437 | error_no_arg (_("one or more choice numbers")); |
14f9c5c9 AS |
3438 | |
3439 | n_chosen = 0; | |
76a01679 | 3440 | |
4c4b4cd2 PH |
3441 | /* Set choices[0 .. n_chosen-1] to the users' choices in ascending |
3442 | order, as given in args. Choices are validated. */ | |
14f9c5c9 AS |
3443 | while (1) |
3444 | { | |
d2e4a39e | 3445 | char *args2; |
14f9c5c9 AS |
3446 | int choice, j; |
3447 | ||
3448 | while (isspace (*args)) | |
4c4b4cd2 | 3449 | args += 1; |
14f9c5c9 | 3450 | if (*args == '\0' && n_chosen == 0) |
323e0a4a | 3451 | error_no_arg (_("one or more choice numbers")); |
14f9c5c9 | 3452 | else if (*args == '\0') |
4c4b4cd2 | 3453 | break; |
14f9c5c9 AS |
3454 | |
3455 | choice = strtol (args, &args2, 10); | |
d2e4a39e | 3456 | if (args == args2 || choice < 0 |
4c4b4cd2 | 3457 | || choice > n_choices + first_choice - 1) |
323e0a4a | 3458 | error (_("Argument must be choice number")); |
14f9c5c9 AS |
3459 | args = args2; |
3460 | ||
d2e4a39e | 3461 | if (choice == 0) |
323e0a4a | 3462 | error (_("cancelled")); |
14f9c5c9 AS |
3463 | |
3464 | if (choice < first_choice) | |
4c4b4cd2 PH |
3465 | { |
3466 | n_chosen = n_choices; | |
3467 | for (j = 0; j < n_choices; j += 1) | |
3468 | choices[j] = j; | |
3469 | break; | |
3470 | } | |
14f9c5c9 AS |
3471 | choice -= first_choice; |
3472 | ||
d2e4a39e | 3473 | for (j = n_chosen - 1; j >= 0 && choice < choices[j]; j -= 1) |
4c4b4cd2 PH |
3474 | { |
3475 | } | |
14f9c5c9 AS |
3476 | |
3477 | if (j < 0 || choice != choices[j]) | |
4c4b4cd2 PH |
3478 | { |
3479 | int k; | |
3480 | for (k = n_chosen - 1; k > j; k -= 1) | |
3481 | choices[k + 1] = choices[k]; | |
3482 | choices[j + 1] = choice; | |
3483 | n_chosen += 1; | |
3484 | } | |
14f9c5c9 AS |
3485 | } |
3486 | ||
3487 | if (n_chosen > max_results) | |
323e0a4a | 3488 | error (_("Select no more than %d of the above"), max_results); |
d2e4a39e | 3489 | |
14f9c5c9 AS |
3490 | return n_chosen; |
3491 | } | |
3492 | ||
4c4b4cd2 PH |
3493 | /* Replace the operator of length OPLEN at position PC in *EXPP with a call |
3494 | on the function identified by SYM and BLOCK, and taking NARGS | |
3495 | arguments. Update *EXPP as needed to hold more space. */ | |
14f9c5c9 AS |
3496 | |
3497 | static void | |
d2e4a39e | 3498 | replace_operator_with_call (struct expression **expp, int pc, int nargs, |
4c4b4cd2 PH |
3499 | int oplen, struct symbol *sym, |
3500 | struct block *block) | |
14f9c5c9 AS |
3501 | { |
3502 | /* A new expression, with 6 more elements (3 for funcall, 4 for function | |
4c4b4cd2 | 3503 | symbol, -oplen for operator being replaced). */ |
d2e4a39e | 3504 | struct expression *newexp = (struct expression *) |
14f9c5c9 | 3505 | xmalloc (sizeof (struct expression) |
4c4b4cd2 | 3506 | + EXP_ELEM_TO_BYTES ((*expp)->nelts + 7 - oplen)); |
d2e4a39e | 3507 | struct expression *exp = *expp; |
14f9c5c9 AS |
3508 | |
3509 | newexp->nelts = exp->nelts + 7 - oplen; | |
3510 | newexp->language_defn = exp->language_defn; | |
3511 | memcpy (newexp->elts, exp->elts, EXP_ELEM_TO_BYTES (pc)); | |
d2e4a39e | 3512 | memcpy (newexp->elts + pc + 7, exp->elts + pc + oplen, |
4c4b4cd2 | 3513 | EXP_ELEM_TO_BYTES (exp->nelts - pc - oplen)); |
14f9c5c9 AS |
3514 | |
3515 | newexp->elts[pc].opcode = newexp->elts[pc + 2].opcode = OP_FUNCALL; | |
3516 | newexp->elts[pc + 1].longconst = (LONGEST) nargs; | |
3517 | ||
3518 | newexp->elts[pc + 3].opcode = newexp->elts[pc + 6].opcode = OP_VAR_VALUE; | |
3519 | newexp->elts[pc + 4].block = block; | |
3520 | newexp->elts[pc + 5].symbol = sym; | |
3521 | ||
3522 | *expp = newexp; | |
aacb1f0a | 3523 | xfree (exp); |
d2e4a39e | 3524 | } |
14f9c5c9 AS |
3525 | |
3526 | /* Type-class predicates */ | |
3527 | ||
4c4b4cd2 PH |
3528 | /* True iff TYPE is numeric (i.e., an INT, RANGE (of numeric type), |
3529 | or FLOAT). */ | |
14f9c5c9 AS |
3530 | |
3531 | static int | |
d2e4a39e | 3532 | numeric_type_p (struct type *type) |
14f9c5c9 AS |
3533 | { |
3534 | if (type == NULL) | |
3535 | return 0; | |
d2e4a39e AS |
3536 | else |
3537 | { | |
3538 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3539 | { |
3540 | case TYPE_CODE_INT: | |
3541 | case TYPE_CODE_FLT: | |
3542 | return 1; | |
3543 | case TYPE_CODE_RANGE: | |
3544 | return (type == TYPE_TARGET_TYPE (type) | |
3545 | || numeric_type_p (TYPE_TARGET_TYPE (type))); | |
3546 | default: | |
3547 | return 0; | |
3548 | } | |
d2e4a39e | 3549 | } |
14f9c5c9 AS |
3550 | } |
3551 | ||
4c4b4cd2 | 3552 | /* True iff TYPE is integral (an INT or RANGE of INTs). */ |
14f9c5c9 AS |
3553 | |
3554 | static int | |
d2e4a39e | 3555 | integer_type_p (struct type *type) |
14f9c5c9 AS |
3556 | { |
3557 | if (type == NULL) | |
3558 | return 0; | |
d2e4a39e AS |
3559 | else |
3560 | { | |
3561 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3562 | { |
3563 | case TYPE_CODE_INT: | |
3564 | return 1; | |
3565 | case TYPE_CODE_RANGE: | |
3566 | return (type == TYPE_TARGET_TYPE (type) | |
3567 | || integer_type_p (TYPE_TARGET_TYPE (type))); | |
3568 | default: | |
3569 | return 0; | |
3570 | } | |
d2e4a39e | 3571 | } |
14f9c5c9 AS |
3572 | } |
3573 | ||
4c4b4cd2 | 3574 | /* True iff TYPE is scalar (INT, RANGE, FLOAT, ENUM). */ |
14f9c5c9 AS |
3575 | |
3576 | static int | |
d2e4a39e | 3577 | scalar_type_p (struct type *type) |
14f9c5c9 AS |
3578 | { |
3579 | if (type == NULL) | |
3580 | return 0; | |
d2e4a39e AS |
3581 | else |
3582 | { | |
3583 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3584 | { |
3585 | case TYPE_CODE_INT: | |
3586 | case TYPE_CODE_RANGE: | |
3587 | case TYPE_CODE_ENUM: | |
3588 | case TYPE_CODE_FLT: | |
3589 | return 1; | |
3590 | default: | |
3591 | return 0; | |
3592 | } | |
d2e4a39e | 3593 | } |
14f9c5c9 AS |
3594 | } |
3595 | ||
4c4b4cd2 | 3596 | /* True iff TYPE is discrete (INT, RANGE, ENUM). */ |
14f9c5c9 AS |
3597 | |
3598 | static int | |
d2e4a39e | 3599 | discrete_type_p (struct type *type) |
14f9c5c9 AS |
3600 | { |
3601 | if (type == NULL) | |
3602 | return 0; | |
d2e4a39e AS |
3603 | else |
3604 | { | |
3605 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3606 | { |
3607 | case TYPE_CODE_INT: | |
3608 | case TYPE_CODE_RANGE: | |
3609 | case TYPE_CODE_ENUM: | |
3610 | return 1; | |
3611 | default: | |
3612 | return 0; | |
3613 | } | |
d2e4a39e | 3614 | } |
14f9c5c9 AS |
3615 | } |
3616 | ||
4c4b4cd2 PH |
3617 | /* Returns non-zero if OP with operands in the vector ARGS could be |
3618 | a user-defined function. Errs on the side of pre-defined operators | |
3619 | (i.e., result 0). */ | |
14f9c5c9 AS |
3620 | |
3621 | static int | |
d2e4a39e | 3622 | possible_user_operator_p (enum exp_opcode op, struct value *args[]) |
14f9c5c9 | 3623 | { |
76a01679 | 3624 | struct type *type0 = |
df407dfe | 3625 | (args[0] == NULL) ? NULL : ada_check_typedef (value_type (args[0])); |
d2e4a39e | 3626 | struct type *type1 = |
df407dfe | 3627 | (args[1] == NULL) ? NULL : ada_check_typedef (value_type (args[1])); |
d2e4a39e | 3628 | |
4c4b4cd2 PH |
3629 | if (type0 == NULL) |
3630 | return 0; | |
3631 | ||
14f9c5c9 AS |
3632 | switch (op) |
3633 | { | |
3634 | default: | |
3635 | return 0; | |
3636 | ||
3637 | case BINOP_ADD: | |
3638 | case BINOP_SUB: | |
3639 | case BINOP_MUL: | |
3640 | case BINOP_DIV: | |
d2e4a39e | 3641 | return (!(numeric_type_p (type0) && numeric_type_p (type1))); |
14f9c5c9 AS |
3642 | |
3643 | case BINOP_REM: | |
3644 | case BINOP_MOD: | |
3645 | case BINOP_BITWISE_AND: | |
3646 | case BINOP_BITWISE_IOR: | |
3647 | case BINOP_BITWISE_XOR: | |
d2e4a39e | 3648 | return (!(integer_type_p (type0) && integer_type_p (type1))); |
14f9c5c9 AS |
3649 | |
3650 | case BINOP_EQUAL: | |
3651 | case BINOP_NOTEQUAL: | |
3652 | case BINOP_LESS: | |
3653 | case BINOP_GTR: | |
3654 | case BINOP_LEQ: | |
3655 | case BINOP_GEQ: | |
d2e4a39e | 3656 | return (!(scalar_type_p (type0) && scalar_type_p (type1))); |
14f9c5c9 AS |
3657 | |
3658 | case BINOP_CONCAT: | |
ee90b9ab | 3659 | return !ada_is_array_type (type0) || !ada_is_array_type (type1); |
14f9c5c9 AS |
3660 | |
3661 | case BINOP_EXP: | |
d2e4a39e | 3662 | return (!(numeric_type_p (type0) && integer_type_p (type1))); |
14f9c5c9 AS |
3663 | |
3664 | case UNOP_NEG: | |
3665 | case UNOP_PLUS: | |
3666 | case UNOP_LOGICAL_NOT: | |
d2e4a39e AS |
3667 | case UNOP_ABS: |
3668 | return (!numeric_type_p (type0)); | |
14f9c5c9 AS |
3669 | |
3670 | } | |
3671 | } | |
3672 | \f | |
4c4b4cd2 | 3673 | /* Renaming */ |
14f9c5c9 | 3674 | |
aeb5907d JB |
3675 | /* NOTES: |
3676 | ||
3677 | 1. In the following, we assume that a renaming type's name may | |
3678 | have an ___XD suffix. It would be nice if this went away at some | |
3679 | point. | |
3680 | 2. We handle both the (old) purely type-based representation of | |
3681 | renamings and the (new) variable-based encoding. At some point, | |
3682 | it is devoutly to be hoped that the former goes away | |
3683 | (FIXME: hilfinger-2007-07-09). | |
3684 | 3. Subprogram renamings are not implemented, although the XRS | |
3685 | suffix is recognized (FIXME: hilfinger-2007-07-09). */ | |
3686 | ||
3687 | /* If SYM encodes a renaming, | |
3688 | ||
3689 | <renaming> renames <renamed entity>, | |
3690 | ||
3691 | sets *LEN to the length of the renamed entity's name, | |
3692 | *RENAMED_ENTITY to that name (not null-terminated), and *RENAMING_EXPR to | |
3693 | the string describing the subcomponent selected from the renamed | |
3694 | entity. Returns ADA_NOT_RENAMING if SYM does not encode a renaming | |
3695 | (in which case, the values of *RENAMED_ENTITY, *LEN, and *RENAMING_EXPR | |
3696 | are undefined). Otherwise, returns a value indicating the category | |
3697 | of entity renamed: an object (ADA_OBJECT_RENAMING), exception | |
3698 | (ADA_EXCEPTION_RENAMING), package (ADA_PACKAGE_RENAMING), or | |
3699 | subprogram (ADA_SUBPROGRAM_RENAMING). Does no allocation; the | |
3700 | strings returned in *RENAMED_ENTITY and *RENAMING_EXPR should not be | |
3701 | deallocated. The values of RENAMED_ENTITY, LEN, or RENAMING_EXPR | |
3702 | may be NULL, in which case they are not assigned. | |
3703 | ||
3704 | [Currently, however, GCC does not generate subprogram renamings.] */ | |
3705 | ||
3706 | enum ada_renaming_category | |
3707 | ada_parse_renaming (struct symbol *sym, | |
3708 | const char **renamed_entity, int *len, | |
3709 | const char **renaming_expr) | |
3710 | { | |
3711 | enum ada_renaming_category kind; | |
3712 | const char *info; | |
3713 | const char *suffix; | |
3714 | ||
3715 | if (sym == NULL) | |
3716 | return ADA_NOT_RENAMING; | |
3717 | switch (SYMBOL_CLASS (sym)) | |
14f9c5c9 | 3718 | { |
aeb5907d JB |
3719 | default: |
3720 | return ADA_NOT_RENAMING; | |
3721 | case LOC_TYPEDEF: | |
3722 | return parse_old_style_renaming (SYMBOL_TYPE (sym), | |
3723 | renamed_entity, len, renaming_expr); | |
3724 | case LOC_LOCAL: | |
3725 | case LOC_STATIC: | |
3726 | case LOC_COMPUTED: | |
3727 | case LOC_OPTIMIZED_OUT: | |
3728 | info = strstr (SYMBOL_LINKAGE_NAME (sym), "___XR"); | |
3729 | if (info == NULL) | |
3730 | return ADA_NOT_RENAMING; | |
3731 | switch (info[5]) | |
3732 | { | |
3733 | case '_': | |
3734 | kind = ADA_OBJECT_RENAMING; | |
3735 | info += 6; | |
3736 | break; | |
3737 | case 'E': | |
3738 | kind = ADA_EXCEPTION_RENAMING; | |
3739 | info += 7; | |
3740 | break; | |
3741 | case 'P': | |
3742 | kind = ADA_PACKAGE_RENAMING; | |
3743 | info += 7; | |
3744 | break; | |
3745 | case 'S': | |
3746 | kind = ADA_SUBPROGRAM_RENAMING; | |
3747 | info += 7; | |
3748 | break; | |
3749 | default: | |
3750 | return ADA_NOT_RENAMING; | |
3751 | } | |
14f9c5c9 | 3752 | } |
4c4b4cd2 | 3753 | |
aeb5907d JB |
3754 | if (renamed_entity != NULL) |
3755 | *renamed_entity = info; | |
3756 | suffix = strstr (info, "___XE"); | |
3757 | if (suffix == NULL || suffix == info) | |
3758 | return ADA_NOT_RENAMING; | |
3759 | if (len != NULL) | |
3760 | *len = strlen (info) - strlen (suffix); | |
3761 | suffix += 5; | |
3762 | if (renaming_expr != NULL) | |
3763 | *renaming_expr = suffix; | |
3764 | return kind; | |
3765 | } | |
3766 | ||
3767 | /* Assuming TYPE encodes a renaming according to the old encoding in | |
3768 | exp_dbug.ads, returns details of that renaming in *RENAMED_ENTITY, | |
3769 | *LEN, and *RENAMING_EXPR, as for ada_parse_renaming, above. Returns | |
3770 | ADA_NOT_RENAMING otherwise. */ | |
3771 | static enum ada_renaming_category | |
3772 | parse_old_style_renaming (struct type *type, | |
3773 | const char **renamed_entity, int *len, | |
3774 | const char **renaming_expr) | |
3775 | { | |
3776 | enum ada_renaming_category kind; | |
3777 | const char *name; | |
3778 | const char *info; | |
3779 | const char *suffix; | |
14f9c5c9 | 3780 | |
aeb5907d JB |
3781 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_ENUM |
3782 | || TYPE_NFIELDS (type) != 1) | |
3783 | return ADA_NOT_RENAMING; | |
14f9c5c9 | 3784 | |
aeb5907d JB |
3785 | name = type_name_no_tag (type); |
3786 | if (name == NULL) | |
3787 | return ADA_NOT_RENAMING; | |
3788 | ||
3789 | name = strstr (name, "___XR"); | |
3790 | if (name == NULL) | |
3791 | return ADA_NOT_RENAMING; | |
3792 | switch (name[5]) | |
3793 | { | |
3794 | case '\0': | |
3795 | case '_': | |
3796 | kind = ADA_OBJECT_RENAMING; | |
3797 | break; | |
3798 | case 'E': | |
3799 | kind = ADA_EXCEPTION_RENAMING; | |
3800 | break; | |
3801 | case 'P': | |
3802 | kind = ADA_PACKAGE_RENAMING; | |
3803 | break; | |
3804 | case 'S': | |
3805 | kind = ADA_SUBPROGRAM_RENAMING; | |
3806 | break; | |
3807 | default: | |
3808 | return ADA_NOT_RENAMING; | |
3809 | } | |
14f9c5c9 | 3810 | |
aeb5907d JB |
3811 | info = TYPE_FIELD_NAME (type, 0); |
3812 | if (info == NULL) | |
3813 | return ADA_NOT_RENAMING; | |
3814 | if (renamed_entity != NULL) | |
3815 | *renamed_entity = info; | |
3816 | suffix = strstr (info, "___XE"); | |
3817 | if (renaming_expr != NULL) | |
3818 | *renaming_expr = suffix + 5; | |
3819 | if (suffix == NULL || suffix == info) | |
3820 | return ADA_NOT_RENAMING; | |
3821 | if (len != NULL) | |
3822 | *len = suffix - info; | |
3823 | return kind; | |
3824 | } | |
52ce6436 | 3825 | |
14f9c5c9 | 3826 | \f |
d2e4a39e | 3827 | |
4c4b4cd2 | 3828 | /* Evaluation: Function Calls */ |
14f9c5c9 | 3829 | |
4c4b4cd2 PH |
3830 | /* Return an lvalue containing the value VAL. This is the identity on |
3831 | lvalues, and otherwise has the side-effect of pushing a copy of VAL | |
3832 | on the stack, using and updating *SP as the stack pointer, and | |
3833 | returning an lvalue whose VALUE_ADDRESS points to the copy. */ | |
14f9c5c9 | 3834 | |
d2e4a39e | 3835 | static struct value * |
4c4b4cd2 | 3836 | ensure_lval (struct value *val, CORE_ADDR *sp) |
14f9c5c9 | 3837 | { |
c3e5cd34 PH |
3838 | if (! VALUE_LVAL (val)) |
3839 | { | |
df407dfe | 3840 | int len = TYPE_LENGTH (ada_check_typedef (value_type (val))); |
c3e5cd34 PH |
3841 | |
3842 | /* The following is taken from the structure-return code in | |
3843 | call_function_by_hand. FIXME: Therefore, some refactoring seems | |
3844 | indicated. */ | |
4d1e7dd1 | 3845 | if (gdbarch_inner_than (current_gdbarch, 1, 2)) |
c3e5cd34 PH |
3846 | { |
3847 | /* Stack grows downward. Align SP and VALUE_ADDRESS (val) after | |
3848 | reserving sufficient space. */ | |
3849 | *sp -= len; | |
3850 | if (gdbarch_frame_align_p (current_gdbarch)) | |
3851 | *sp = gdbarch_frame_align (current_gdbarch, *sp); | |
3852 | VALUE_ADDRESS (val) = *sp; | |
3853 | } | |
3854 | else | |
3855 | { | |
3856 | /* Stack grows upward. Align the frame, allocate space, and | |
3857 | then again, re-align the frame. */ | |
3858 | if (gdbarch_frame_align_p (current_gdbarch)) | |
3859 | *sp = gdbarch_frame_align (current_gdbarch, *sp); | |
3860 | VALUE_ADDRESS (val) = *sp; | |
3861 | *sp += len; | |
3862 | if (gdbarch_frame_align_p (current_gdbarch)) | |
3863 | *sp = gdbarch_frame_align (current_gdbarch, *sp); | |
3864 | } | |
a84a8a0d | 3865 | VALUE_LVAL (val) = lval_memory; |
14f9c5c9 | 3866 | |
990a07ab | 3867 | write_memory (VALUE_ADDRESS (val), value_contents_raw (val), len); |
c3e5cd34 | 3868 | } |
14f9c5c9 AS |
3869 | |
3870 | return val; | |
3871 | } | |
3872 | ||
3873 | /* Return the value ACTUAL, converted to be an appropriate value for a | |
3874 | formal of type FORMAL_TYPE. Use *SP as a stack pointer for | |
3875 | allocating any necessary descriptors (fat pointers), or copies of | |
4c4b4cd2 | 3876 | values not residing in memory, updating it as needed. */ |
14f9c5c9 | 3877 | |
a93c0eb6 JB |
3878 | struct value * |
3879 | ada_convert_actual (struct value *actual, struct type *formal_type0, | |
3880 | CORE_ADDR *sp) | |
14f9c5c9 | 3881 | { |
df407dfe | 3882 | struct type *actual_type = ada_check_typedef (value_type (actual)); |
61ee279c | 3883 | struct type *formal_type = ada_check_typedef (formal_type0); |
d2e4a39e AS |
3884 | struct type *formal_target = |
3885 | TYPE_CODE (formal_type) == TYPE_CODE_PTR | |
61ee279c | 3886 | ? ada_check_typedef (TYPE_TARGET_TYPE (formal_type)) : formal_type; |
d2e4a39e AS |
3887 | struct type *actual_target = |
3888 | TYPE_CODE (actual_type) == TYPE_CODE_PTR | |
61ee279c | 3889 | ? ada_check_typedef (TYPE_TARGET_TYPE (actual_type)) : actual_type; |
14f9c5c9 | 3890 | |
4c4b4cd2 | 3891 | if (ada_is_array_descriptor_type (formal_target) |
14f9c5c9 AS |
3892 | && TYPE_CODE (actual_target) == TYPE_CODE_ARRAY) |
3893 | return make_array_descriptor (formal_type, actual, sp); | |
a84a8a0d JB |
3894 | else if (TYPE_CODE (formal_type) == TYPE_CODE_PTR |
3895 | || TYPE_CODE (formal_type) == TYPE_CODE_REF) | |
14f9c5c9 | 3896 | { |
a84a8a0d | 3897 | struct value *result; |
14f9c5c9 | 3898 | if (TYPE_CODE (formal_target) == TYPE_CODE_ARRAY |
4c4b4cd2 | 3899 | && ada_is_array_descriptor_type (actual_target)) |
a84a8a0d | 3900 | result = desc_data (actual); |
14f9c5c9 | 3901 | else if (TYPE_CODE (actual_type) != TYPE_CODE_PTR) |
4c4b4cd2 PH |
3902 | { |
3903 | if (VALUE_LVAL (actual) != lval_memory) | |
3904 | { | |
3905 | struct value *val; | |
df407dfe | 3906 | actual_type = ada_check_typedef (value_type (actual)); |
4c4b4cd2 | 3907 | val = allocate_value (actual_type); |
990a07ab | 3908 | memcpy ((char *) value_contents_raw (val), |
0fd88904 | 3909 | (char *) value_contents (actual), |
4c4b4cd2 PH |
3910 | TYPE_LENGTH (actual_type)); |
3911 | actual = ensure_lval (val, sp); | |
3912 | } | |
a84a8a0d | 3913 | result = value_addr (actual); |
4c4b4cd2 | 3914 | } |
a84a8a0d JB |
3915 | else |
3916 | return actual; | |
3917 | return value_cast_pointers (formal_type, result); | |
14f9c5c9 AS |
3918 | } |
3919 | else if (TYPE_CODE (actual_type) == TYPE_CODE_PTR) | |
3920 | return ada_value_ind (actual); | |
3921 | ||
3922 | return actual; | |
3923 | } | |
3924 | ||
3925 | ||
4c4b4cd2 PH |
3926 | /* Push a descriptor of type TYPE for array value ARR on the stack at |
3927 | *SP, updating *SP to reflect the new descriptor. Return either | |
14f9c5c9 | 3928 | an lvalue representing the new descriptor, or (if TYPE is a pointer- |
4c4b4cd2 PH |
3929 | to-descriptor type rather than a descriptor type), a struct value * |
3930 | representing a pointer to this descriptor. */ | |
14f9c5c9 | 3931 | |
d2e4a39e AS |
3932 | static struct value * |
3933 | make_array_descriptor (struct type *type, struct value *arr, CORE_ADDR *sp) | |
14f9c5c9 | 3934 | { |
d2e4a39e AS |
3935 | struct type *bounds_type = desc_bounds_type (type); |
3936 | struct type *desc_type = desc_base_type (type); | |
3937 | struct value *descriptor = allocate_value (desc_type); | |
3938 | struct value *bounds = allocate_value (bounds_type); | |
14f9c5c9 | 3939 | int i; |
d2e4a39e | 3940 | |
df407dfe | 3941 | for (i = ada_array_arity (ada_check_typedef (value_type (arr))); i > 0; i -= 1) |
14f9c5c9 | 3942 | { |
0fd88904 | 3943 | modify_general_field (value_contents_writeable (bounds), |
4c4b4cd2 PH |
3944 | value_as_long (ada_array_bound (arr, i, 0)), |
3945 | desc_bound_bitpos (bounds_type, i, 0), | |
3946 | desc_bound_bitsize (bounds_type, i, 0)); | |
0fd88904 | 3947 | modify_general_field (value_contents_writeable (bounds), |
4c4b4cd2 PH |
3948 | value_as_long (ada_array_bound (arr, i, 1)), |
3949 | desc_bound_bitpos (bounds_type, i, 1), | |
3950 | desc_bound_bitsize (bounds_type, i, 1)); | |
14f9c5c9 | 3951 | } |
d2e4a39e | 3952 | |
4c4b4cd2 | 3953 | bounds = ensure_lval (bounds, sp); |
d2e4a39e | 3954 | |
0fd88904 | 3955 | modify_general_field (value_contents_writeable (descriptor), |
76a01679 JB |
3956 | VALUE_ADDRESS (ensure_lval (arr, sp)), |
3957 | fat_pntr_data_bitpos (desc_type), | |
3958 | fat_pntr_data_bitsize (desc_type)); | |
4c4b4cd2 | 3959 | |
0fd88904 | 3960 | modify_general_field (value_contents_writeable (descriptor), |
4c4b4cd2 PH |
3961 | VALUE_ADDRESS (bounds), |
3962 | fat_pntr_bounds_bitpos (desc_type), | |
3963 | fat_pntr_bounds_bitsize (desc_type)); | |
14f9c5c9 | 3964 | |
4c4b4cd2 | 3965 | descriptor = ensure_lval (descriptor, sp); |
14f9c5c9 AS |
3966 | |
3967 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
3968 | return value_addr (descriptor); | |
3969 | else | |
3970 | return descriptor; | |
3971 | } | |
14f9c5c9 | 3972 | \f |
963a6417 PH |
3973 | /* Dummy definitions for an experimental caching module that is not |
3974 | * used in the public sources. */ | |
96d887e8 | 3975 | |
96d887e8 PH |
3976 | static int |
3977 | lookup_cached_symbol (const char *name, domain_enum namespace, | |
2570f2b7 | 3978 | struct symbol **sym, struct block **block) |
96d887e8 PH |
3979 | { |
3980 | return 0; | |
3981 | } | |
3982 | ||
3983 | static void | |
3984 | cache_symbol (const char *name, domain_enum namespace, struct symbol *sym, | |
2570f2b7 | 3985 | struct block *block) |
96d887e8 PH |
3986 | { |
3987 | } | |
4c4b4cd2 PH |
3988 | \f |
3989 | /* Symbol Lookup */ | |
3990 | ||
3991 | /* Return the result of a standard (literal, C-like) lookup of NAME in | |
3992 | given DOMAIN, visible from lexical block BLOCK. */ | |
3993 | ||
3994 | static struct symbol * | |
3995 | standard_lookup (const char *name, const struct block *block, | |
3996 | domain_enum domain) | |
3997 | { | |
3998 | struct symbol *sym; | |
4c4b4cd2 | 3999 | |
2570f2b7 | 4000 | if (lookup_cached_symbol (name, domain, &sym, NULL)) |
4c4b4cd2 | 4001 | return sym; |
2570f2b7 UW |
4002 | sym = lookup_symbol_in_language (name, block, domain, language_c, 0); |
4003 | cache_symbol (name, domain, sym, block_found); | |
4c4b4cd2 PH |
4004 | return sym; |
4005 | } | |
4006 | ||
4007 | ||
4008 | /* Non-zero iff there is at least one non-function/non-enumeral symbol | |
4009 | in the symbol fields of SYMS[0..N-1]. We treat enumerals as functions, | |
4010 | since they contend in overloading in the same way. */ | |
4011 | static int | |
4012 | is_nonfunction (struct ada_symbol_info syms[], int n) | |
4013 | { | |
4014 | int i; | |
4015 | ||
4016 | for (i = 0; i < n; i += 1) | |
4017 | if (TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) != TYPE_CODE_FUNC | |
4018 | && (TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) != TYPE_CODE_ENUM | |
4019 | || SYMBOL_CLASS (syms[i].sym) != LOC_CONST)) | |
14f9c5c9 AS |
4020 | return 1; |
4021 | ||
4022 | return 0; | |
4023 | } | |
4024 | ||
4025 | /* If true (non-zero), then TYPE0 and TYPE1 represent equivalent | |
4c4b4cd2 | 4026 | struct types. Otherwise, they may not. */ |
14f9c5c9 AS |
4027 | |
4028 | static int | |
d2e4a39e | 4029 | equiv_types (struct type *type0, struct type *type1) |
14f9c5c9 | 4030 | { |
d2e4a39e | 4031 | if (type0 == type1) |
14f9c5c9 | 4032 | return 1; |
d2e4a39e | 4033 | if (type0 == NULL || type1 == NULL |
14f9c5c9 AS |
4034 | || TYPE_CODE (type0) != TYPE_CODE (type1)) |
4035 | return 0; | |
d2e4a39e | 4036 | if ((TYPE_CODE (type0) == TYPE_CODE_STRUCT |
14f9c5c9 AS |
4037 | || TYPE_CODE (type0) == TYPE_CODE_ENUM) |
4038 | && ada_type_name (type0) != NULL && ada_type_name (type1) != NULL | |
4c4b4cd2 | 4039 | && strcmp (ada_type_name (type0), ada_type_name (type1)) == 0) |
14f9c5c9 | 4040 | return 1; |
d2e4a39e | 4041 | |
14f9c5c9 AS |
4042 | return 0; |
4043 | } | |
4044 | ||
4045 | /* True iff SYM0 represents the same entity as SYM1, or one that is | |
4c4b4cd2 | 4046 | no more defined than that of SYM1. */ |
14f9c5c9 AS |
4047 | |
4048 | static int | |
d2e4a39e | 4049 | lesseq_defined_than (struct symbol *sym0, struct symbol *sym1) |
14f9c5c9 AS |
4050 | { |
4051 | if (sym0 == sym1) | |
4052 | return 1; | |
176620f1 | 4053 | if (SYMBOL_DOMAIN (sym0) != SYMBOL_DOMAIN (sym1) |
14f9c5c9 AS |
4054 | || SYMBOL_CLASS (sym0) != SYMBOL_CLASS (sym1)) |
4055 | return 0; | |
4056 | ||
d2e4a39e | 4057 | switch (SYMBOL_CLASS (sym0)) |
14f9c5c9 AS |
4058 | { |
4059 | case LOC_UNDEF: | |
4060 | return 1; | |
4061 | case LOC_TYPEDEF: | |
4062 | { | |
4c4b4cd2 PH |
4063 | struct type *type0 = SYMBOL_TYPE (sym0); |
4064 | struct type *type1 = SYMBOL_TYPE (sym1); | |
4065 | char *name0 = SYMBOL_LINKAGE_NAME (sym0); | |
4066 | char *name1 = SYMBOL_LINKAGE_NAME (sym1); | |
4067 | int len0 = strlen (name0); | |
4068 | return | |
4069 | TYPE_CODE (type0) == TYPE_CODE (type1) | |
4070 | && (equiv_types (type0, type1) | |
4071 | || (len0 < strlen (name1) && strncmp (name0, name1, len0) == 0 | |
4072 | && strncmp (name1 + len0, "___XV", 5) == 0)); | |
14f9c5c9 AS |
4073 | } |
4074 | case LOC_CONST: | |
4075 | return SYMBOL_VALUE (sym0) == SYMBOL_VALUE (sym1) | |
4c4b4cd2 | 4076 | && equiv_types (SYMBOL_TYPE (sym0), SYMBOL_TYPE (sym1)); |
d2e4a39e AS |
4077 | default: |
4078 | return 0; | |
14f9c5c9 AS |
4079 | } |
4080 | } | |
4081 | ||
4c4b4cd2 PH |
4082 | /* Append (SYM,BLOCK,SYMTAB) to the end of the array of struct ada_symbol_info |
4083 | records in OBSTACKP. Do nothing if SYM is a duplicate. */ | |
14f9c5c9 AS |
4084 | |
4085 | static void | |
76a01679 JB |
4086 | add_defn_to_vec (struct obstack *obstackp, |
4087 | struct symbol *sym, | |
2570f2b7 | 4088 | struct block *block) |
14f9c5c9 AS |
4089 | { |
4090 | int i; | |
4091 | size_t tmp; | |
4c4b4cd2 | 4092 | struct ada_symbol_info *prevDefns = defns_collected (obstackp, 0); |
14f9c5c9 | 4093 | |
529cad9c PH |
4094 | /* Do not try to complete stub types, as the debugger is probably |
4095 | already scanning all symbols matching a certain name at the | |
4096 | time when this function is called. Trying to replace the stub | |
4097 | type by its associated full type will cause us to restart a scan | |
4098 | which may lead to an infinite recursion. Instead, the client | |
4099 | collecting the matching symbols will end up collecting several | |
4100 | matches, with at least one of them complete. It can then filter | |
4101 | out the stub ones if needed. */ | |
4102 | ||
4c4b4cd2 PH |
4103 | for (i = num_defns_collected (obstackp) - 1; i >= 0; i -= 1) |
4104 | { | |
4105 | if (lesseq_defined_than (sym, prevDefns[i].sym)) | |
4106 | return; | |
4107 | else if (lesseq_defined_than (prevDefns[i].sym, sym)) | |
4108 | { | |
4109 | prevDefns[i].sym = sym; | |
4110 | prevDefns[i].block = block; | |
4c4b4cd2 | 4111 | return; |
76a01679 | 4112 | } |
4c4b4cd2 PH |
4113 | } |
4114 | ||
4115 | { | |
4116 | struct ada_symbol_info info; | |
4117 | ||
4118 | info.sym = sym; | |
4119 | info.block = block; | |
4c4b4cd2 PH |
4120 | obstack_grow (obstackp, &info, sizeof (struct ada_symbol_info)); |
4121 | } | |
4122 | } | |
4123 | ||
4124 | /* Number of ada_symbol_info structures currently collected in | |
4125 | current vector in *OBSTACKP. */ | |
4126 | ||
76a01679 JB |
4127 | static int |
4128 | num_defns_collected (struct obstack *obstackp) | |
4c4b4cd2 PH |
4129 | { |
4130 | return obstack_object_size (obstackp) / sizeof (struct ada_symbol_info); | |
4131 | } | |
4132 | ||
4133 | /* Vector of ada_symbol_info structures currently collected in current | |
4134 | vector in *OBSTACKP. If FINISH, close off the vector and return | |
4135 | its final address. */ | |
4136 | ||
76a01679 | 4137 | static struct ada_symbol_info * |
4c4b4cd2 PH |
4138 | defns_collected (struct obstack *obstackp, int finish) |
4139 | { | |
4140 | if (finish) | |
4141 | return obstack_finish (obstackp); | |
4142 | else | |
4143 | return (struct ada_symbol_info *) obstack_base (obstackp); | |
4144 | } | |
4145 | ||
96d887e8 PH |
4146 | /* Look, in partial_symtab PST, for symbol NAME in given namespace. |
4147 | Check the global symbols if GLOBAL, the static symbols if not. | |
4148 | Do wild-card match if WILD. */ | |
4c4b4cd2 | 4149 | |
96d887e8 PH |
4150 | static struct partial_symbol * |
4151 | ada_lookup_partial_symbol (struct partial_symtab *pst, const char *name, | |
4152 | int global, domain_enum namespace, int wild) | |
4c4b4cd2 | 4153 | { |
96d887e8 PH |
4154 | struct partial_symbol **start; |
4155 | int name_len = strlen (name); | |
4156 | int length = (global ? pst->n_global_syms : pst->n_static_syms); | |
4157 | int i; | |
4c4b4cd2 | 4158 | |
96d887e8 | 4159 | if (length == 0) |
4c4b4cd2 | 4160 | { |
96d887e8 | 4161 | return (NULL); |
4c4b4cd2 PH |
4162 | } |
4163 | ||
96d887e8 PH |
4164 | start = (global ? |
4165 | pst->objfile->global_psymbols.list + pst->globals_offset : | |
4166 | pst->objfile->static_psymbols.list + pst->statics_offset); | |
4c4b4cd2 | 4167 | |
96d887e8 | 4168 | if (wild) |
4c4b4cd2 | 4169 | { |
96d887e8 PH |
4170 | for (i = 0; i < length; i += 1) |
4171 | { | |
4172 | struct partial_symbol *psym = start[i]; | |
4c4b4cd2 | 4173 | |
5eeb2539 AR |
4174 | if (symbol_matches_domain (SYMBOL_LANGUAGE (psym), |
4175 | SYMBOL_DOMAIN (psym), namespace) | |
1265e4aa | 4176 | && wild_match (name, name_len, SYMBOL_LINKAGE_NAME (psym))) |
96d887e8 PH |
4177 | return psym; |
4178 | } | |
4179 | return NULL; | |
4c4b4cd2 | 4180 | } |
96d887e8 PH |
4181 | else |
4182 | { | |
4183 | if (global) | |
4184 | { | |
4185 | int U; | |
4186 | i = 0; | |
4187 | U = length - 1; | |
4188 | while (U - i > 4) | |
4189 | { | |
4190 | int M = (U + i) >> 1; | |
4191 | struct partial_symbol *psym = start[M]; | |
4192 | if (SYMBOL_LINKAGE_NAME (psym)[0] < name[0]) | |
4193 | i = M + 1; | |
4194 | else if (SYMBOL_LINKAGE_NAME (psym)[0] > name[0]) | |
4195 | U = M - 1; | |
4196 | else if (strcmp (SYMBOL_LINKAGE_NAME (psym), name) < 0) | |
4197 | i = M + 1; | |
4198 | else | |
4199 | U = M; | |
4200 | } | |
4201 | } | |
4202 | else | |
4203 | i = 0; | |
4c4b4cd2 | 4204 | |
96d887e8 PH |
4205 | while (i < length) |
4206 | { | |
4207 | struct partial_symbol *psym = start[i]; | |
4c4b4cd2 | 4208 | |
5eeb2539 AR |
4209 | if (symbol_matches_domain (SYMBOL_LANGUAGE (psym), |
4210 | SYMBOL_DOMAIN (psym), namespace)) | |
96d887e8 PH |
4211 | { |
4212 | int cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym), name_len); | |
4c4b4cd2 | 4213 | |
96d887e8 PH |
4214 | if (cmp < 0) |
4215 | { | |
4216 | if (global) | |
4217 | break; | |
4218 | } | |
4219 | else if (cmp == 0 | |
4220 | && is_name_suffix (SYMBOL_LINKAGE_NAME (psym) | |
76a01679 | 4221 | + name_len)) |
96d887e8 PH |
4222 | return psym; |
4223 | } | |
4224 | i += 1; | |
4225 | } | |
4c4b4cd2 | 4226 | |
96d887e8 PH |
4227 | if (global) |
4228 | { | |
4229 | int U; | |
4230 | i = 0; | |
4231 | U = length - 1; | |
4232 | while (U - i > 4) | |
4233 | { | |
4234 | int M = (U + i) >> 1; | |
4235 | struct partial_symbol *psym = start[M]; | |
4236 | if (SYMBOL_LINKAGE_NAME (psym)[0] < '_') | |
4237 | i = M + 1; | |
4238 | else if (SYMBOL_LINKAGE_NAME (psym)[0] > '_') | |
4239 | U = M - 1; | |
4240 | else if (strcmp (SYMBOL_LINKAGE_NAME (psym), "_ada_") < 0) | |
4241 | i = M + 1; | |
4242 | else | |
4243 | U = M; | |
4244 | } | |
4245 | } | |
4246 | else | |
4247 | i = 0; | |
4c4b4cd2 | 4248 | |
96d887e8 PH |
4249 | while (i < length) |
4250 | { | |
4251 | struct partial_symbol *psym = start[i]; | |
4c4b4cd2 | 4252 | |
5eeb2539 AR |
4253 | if (symbol_matches_domain (SYMBOL_LANGUAGE (psym), |
4254 | SYMBOL_DOMAIN (psym), namespace)) | |
96d887e8 PH |
4255 | { |
4256 | int cmp; | |
4c4b4cd2 | 4257 | |
96d887e8 PH |
4258 | cmp = (int) '_' - (int) SYMBOL_LINKAGE_NAME (psym)[0]; |
4259 | if (cmp == 0) | |
4260 | { | |
4261 | cmp = strncmp ("_ada_", SYMBOL_LINKAGE_NAME (psym), 5); | |
4262 | if (cmp == 0) | |
4263 | cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym) + 5, | |
76a01679 | 4264 | name_len); |
96d887e8 | 4265 | } |
4c4b4cd2 | 4266 | |
96d887e8 PH |
4267 | if (cmp < 0) |
4268 | { | |
4269 | if (global) | |
4270 | break; | |
4271 | } | |
4272 | else if (cmp == 0 | |
4273 | && is_name_suffix (SYMBOL_LINKAGE_NAME (psym) | |
76a01679 | 4274 | + name_len + 5)) |
96d887e8 PH |
4275 | return psym; |
4276 | } | |
4277 | i += 1; | |
4278 | } | |
4279 | } | |
4280 | return NULL; | |
4c4b4cd2 PH |
4281 | } |
4282 | ||
96d887e8 | 4283 | /* Find a symbol table containing symbol SYM or NULL if none. */ |
4c4b4cd2 | 4284 | |
96d887e8 PH |
4285 | static struct symtab * |
4286 | symtab_for_sym (struct symbol *sym) | |
4c4b4cd2 | 4287 | { |
96d887e8 PH |
4288 | struct symtab *s; |
4289 | struct objfile *objfile; | |
4290 | struct block *b; | |
4291 | struct symbol *tmp_sym; | |
4292 | struct dict_iterator iter; | |
4293 | int j; | |
4c4b4cd2 | 4294 | |
11309657 | 4295 | ALL_PRIMARY_SYMTABS (objfile, s) |
96d887e8 PH |
4296 | { |
4297 | switch (SYMBOL_CLASS (sym)) | |
4298 | { | |
4299 | case LOC_CONST: | |
4300 | case LOC_STATIC: | |
4301 | case LOC_TYPEDEF: | |
4302 | case LOC_REGISTER: | |
4303 | case LOC_LABEL: | |
4304 | case LOC_BLOCK: | |
4305 | case LOC_CONST_BYTES: | |
76a01679 JB |
4306 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); |
4307 | ALL_BLOCK_SYMBOLS (b, iter, tmp_sym) if (sym == tmp_sym) | |
4308 | return s; | |
4309 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
4310 | ALL_BLOCK_SYMBOLS (b, iter, tmp_sym) if (sym == tmp_sym) | |
4311 | return s; | |
96d887e8 PH |
4312 | break; |
4313 | default: | |
4314 | break; | |
4315 | } | |
4316 | switch (SYMBOL_CLASS (sym)) | |
4317 | { | |
4318 | case LOC_REGISTER: | |
4319 | case LOC_ARG: | |
4320 | case LOC_REF_ARG: | |
4321 | case LOC_REGPARM: | |
4322 | case LOC_REGPARM_ADDR: | |
4323 | case LOC_LOCAL: | |
4324 | case LOC_TYPEDEF: | |
4325 | case LOC_LOCAL_ARG: | |
4326 | case LOC_BASEREG: | |
4327 | case LOC_BASEREG_ARG: | |
4328 | case LOC_COMPUTED: | |
4329 | case LOC_COMPUTED_ARG: | |
76a01679 JB |
4330 | for (j = FIRST_LOCAL_BLOCK; |
4331 | j < BLOCKVECTOR_NBLOCKS (BLOCKVECTOR (s)); j += 1) | |
4332 | { | |
4333 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), j); | |
4334 | ALL_BLOCK_SYMBOLS (b, iter, tmp_sym) if (sym == tmp_sym) | |
4335 | return s; | |
4336 | } | |
4337 | break; | |
96d887e8 PH |
4338 | default: |
4339 | break; | |
4340 | } | |
4341 | } | |
4342 | return NULL; | |
4c4b4cd2 PH |
4343 | } |
4344 | ||
96d887e8 PH |
4345 | /* Return a minimal symbol matching NAME according to Ada decoding |
4346 | rules. Returns NULL if there is no such minimal symbol. Names | |
4347 | prefixed with "standard__" are handled specially: "standard__" is | |
4348 | first stripped off, and only static and global symbols are searched. */ | |
4c4b4cd2 | 4349 | |
96d887e8 PH |
4350 | struct minimal_symbol * |
4351 | ada_lookup_simple_minsym (const char *name) | |
4c4b4cd2 | 4352 | { |
4c4b4cd2 | 4353 | struct objfile *objfile; |
96d887e8 PH |
4354 | struct minimal_symbol *msymbol; |
4355 | int wild_match; | |
4c4b4cd2 | 4356 | |
96d887e8 | 4357 | if (strncmp (name, "standard__", sizeof ("standard__") - 1) == 0) |
4c4b4cd2 | 4358 | { |
96d887e8 | 4359 | name += sizeof ("standard__") - 1; |
4c4b4cd2 | 4360 | wild_match = 0; |
4c4b4cd2 PH |
4361 | } |
4362 | else | |
96d887e8 | 4363 | wild_match = (strstr (name, "__") == NULL); |
4c4b4cd2 | 4364 | |
96d887e8 PH |
4365 | ALL_MSYMBOLS (objfile, msymbol) |
4366 | { | |
4367 | if (ada_match_name (SYMBOL_LINKAGE_NAME (msymbol), name, wild_match) | |
4368 | && MSYMBOL_TYPE (msymbol) != mst_solib_trampoline) | |
4369 | return msymbol; | |
4370 | } | |
4c4b4cd2 | 4371 | |
96d887e8 PH |
4372 | return NULL; |
4373 | } | |
4c4b4cd2 | 4374 | |
96d887e8 PH |
4375 | /* For all subprograms that statically enclose the subprogram of the |
4376 | selected frame, add symbols matching identifier NAME in DOMAIN | |
4377 | and their blocks to the list of data in OBSTACKP, as for | |
4378 | ada_add_block_symbols (q.v.). If WILD, treat as NAME with a | |
4379 | wildcard prefix. */ | |
4c4b4cd2 | 4380 | |
96d887e8 PH |
4381 | static void |
4382 | add_symbols_from_enclosing_procs (struct obstack *obstackp, | |
76a01679 | 4383 | const char *name, domain_enum namespace, |
96d887e8 PH |
4384 | int wild_match) |
4385 | { | |
96d887e8 | 4386 | } |
14f9c5c9 | 4387 | |
96d887e8 PH |
4388 | /* True if TYPE is definitely an artificial type supplied to a symbol |
4389 | for which no debugging information was given in the symbol file. */ | |
14f9c5c9 | 4390 | |
96d887e8 PH |
4391 | static int |
4392 | is_nondebugging_type (struct type *type) | |
4393 | { | |
4394 | char *name = ada_type_name (type); | |
4395 | return (name != NULL && strcmp (name, "<variable, no debug info>") == 0); | |
4396 | } | |
4c4b4cd2 | 4397 | |
96d887e8 PH |
4398 | /* Remove any non-debugging symbols in SYMS[0 .. NSYMS-1] that definitely |
4399 | duplicate other symbols in the list (The only case I know of where | |
4400 | this happens is when object files containing stabs-in-ecoff are | |
4401 | linked with files containing ordinary ecoff debugging symbols (or no | |
4402 | debugging symbols)). Modifies SYMS to squeeze out deleted entries. | |
4403 | Returns the number of items in the modified list. */ | |
4c4b4cd2 | 4404 | |
96d887e8 PH |
4405 | static int |
4406 | remove_extra_symbols (struct ada_symbol_info *syms, int nsyms) | |
4407 | { | |
4408 | int i, j; | |
4c4b4cd2 | 4409 | |
96d887e8 PH |
4410 | i = 0; |
4411 | while (i < nsyms) | |
4412 | { | |
4413 | if (SYMBOL_LINKAGE_NAME (syms[i].sym) != NULL | |
4414 | && SYMBOL_CLASS (syms[i].sym) == LOC_STATIC | |
4415 | && is_nondebugging_type (SYMBOL_TYPE (syms[i].sym))) | |
4416 | { | |
4417 | for (j = 0; j < nsyms; j += 1) | |
4418 | { | |
4419 | if (i != j | |
4420 | && SYMBOL_LINKAGE_NAME (syms[j].sym) != NULL | |
4421 | && strcmp (SYMBOL_LINKAGE_NAME (syms[i].sym), | |
76a01679 | 4422 | SYMBOL_LINKAGE_NAME (syms[j].sym)) == 0 |
96d887e8 PH |
4423 | && SYMBOL_CLASS (syms[i].sym) == SYMBOL_CLASS (syms[j].sym) |
4424 | && SYMBOL_VALUE_ADDRESS (syms[i].sym) | |
4425 | == SYMBOL_VALUE_ADDRESS (syms[j].sym)) | |
4c4b4cd2 | 4426 | { |
96d887e8 PH |
4427 | int k; |
4428 | for (k = i + 1; k < nsyms; k += 1) | |
76a01679 | 4429 | syms[k - 1] = syms[k]; |
96d887e8 PH |
4430 | nsyms -= 1; |
4431 | goto NextSymbol; | |
4c4b4cd2 | 4432 | } |
4c4b4cd2 | 4433 | } |
4c4b4cd2 | 4434 | } |
96d887e8 PH |
4435 | i += 1; |
4436 | NextSymbol: | |
4437 | ; | |
14f9c5c9 | 4438 | } |
96d887e8 | 4439 | return nsyms; |
14f9c5c9 AS |
4440 | } |
4441 | ||
96d887e8 PH |
4442 | /* Given a type that corresponds to a renaming entity, use the type name |
4443 | to extract the scope (package name or function name, fully qualified, | |
4444 | and following the GNAT encoding convention) where this renaming has been | |
4445 | defined. The string returned needs to be deallocated after use. */ | |
4c4b4cd2 | 4446 | |
96d887e8 PH |
4447 | static char * |
4448 | xget_renaming_scope (struct type *renaming_type) | |
14f9c5c9 | 4449 | { |
96d887e8 PH |
4450 | /* The renaming types adhere to the following convention: |
4451 | <scope>__<rename>___<XR extension>. | |
4452 | So, to extract the scope, we search for the "___XR" extension, | |
4453 | and then backtrack until we find the first "__". */ | |
76a01679 | 4454 | |
96d887e8 PH |
4455 | const char *name = type_name_no_tag (renaming_type); |
4456 | char *suffix = strstr (name, "___XR"); | |
4457 | char *last; | |
4458 | int scope_len; | |
4459 | char *scope; | |
14f9c5c9 | 4460 | |
96d887e8 PH |
4461 | /* Now, backtrack a bit until we find the first "__". Start looking |
4462 | at suffix - 3, as the <rename> part is at least one character long. */ | |
14f9c5c9 | 4463 | |
96d887e8 PH |
4464 | for (last = suffix - 3; last > name; last--) |
4465 | if (last[0] == '_' && last[1] == '_') | |
4466 | break; | |
76a01679 | 4467 | |
96d887e8 | 4468 | /* Make a copy of scope and return it. */ |
14f9c5c9 | 4469 | |
96d887e8 PH |
4470 | scope_len = last - name; |
4471 | scope = (char *) xmalloc ((scope_len + 1) * sizeof (char)); | |
14f9c5c9 | 4472 | |
96d887e8 PH |
4473 | strncpy (scope, name, scope_len); |
4474 | scope[scope_len] = '\0'; | |
4c4b4cd2 | 4475 | |
96d887e8 | 4476 | return scope; |
4c4b4cd2 PH |
4477 | } |
4478 | ||
96d887e8 | 4479 | /* Return nonzero if NAME corresponds to a package name. */ |
4c4b4cd2 | 4480 | |
96d887e8 PH |
4481 | static int |
4482 | is_package_name (const char *name) | |
4c4b4cd2 | 4483 | { |
96d887e8 PH |
4484 | /* Here, We take advantage of the fact that no symbols are generated |
4485 | for packages, while symbols are generated for each function. | |
4486 | So the condition for NAME represent a package becomes equivalent | |
4487 | to NAME not existing in our list of symbols. There is only one | |
4488 | small complication with library-level functions (see below). */ | |
4c4b4cd2 | 4489 | |
96d887e8 | 4490 | char *fun_name; |
76a01679 | 4491 | |
96d887e8 PH |
4492 | /* If it is a function that has not been defined at library level, |
4493 | then we should be able to look it up in the symbols. */ | |
4494 | if (standard_lookup (name, NULL, VAR_DOMAIN) != NULL) | |
4495 | return 0; | |
14f9c5c9 | 4496 | |
96d887e8 PH |
4497 | /* Library-level function names start with "_ada_". See if function |
4498 | "_ada_" followed by NAME can be found. */ | |
14f9c5c9 | 4499 | |
96d887e8 | 4500 | /* Do a quick check that NAME does not contain "__", since library-level |
e1d5a0d2 | 4501 | functions names cannot contain "__" in them. */ |
96d887e8 PH |
4502 | if (strstr (name, "__") != NULL) |
4503 | return 0; | |
4c4b4cd2 | 4504 | |
b435e160 | 4505 | fun_name = xstrprintf ("_ada_%s", name); |
14f9c5c9 | 4506 | |
96d887e8 PH |
4507 | return (standard_lookup (fun_name, NULL, VAR_DOMAIN) == NULL); |
4508 | } | |
14f9c5c9 | 4509 | |
96d887e8 | 4510 | /* Return nonzero if SYM corresponds to a renaming entity that is |
aeb5907d | 4511 | not visible from FUNCTION_NAME. */ |
14f9c5c9 | 4512 | |
96d887e8 | 4513 | static int |
aeb5907d | 4514 | old_renaming_is_invisible (const struct symbol *sym, char *function_name) |
96d887e8 | 4515 | { |
aeb5907d JB |
4516 | char *scope; |
4517 | ||
4518 | if (SYMBOL_CLASS (sym) != LOC_TYPEDEF) | |
4519 | return 0; | |
4520 | ||
4521 | scope = xget_renaming_scope (SYMBOL_TYPE (sym)); | |
d2e4a39e | 4522 | |
96d887e8 | 4523 | make_cleanup (xfree, scope); |
14f9c5c9 | 4524 | |
96d887e8 PH |
4525 | /* If the rename has been defined in a package, then it is visible. */ |
4526 | if (is_package_name (scope)) | |
aeb5907d | 4527 | return 0; |
14f9c5c9 | 4528 | |
96d887e8 PH |
4529 | /* Check that the rename is in the current function scope by checking |
4530 | that its name starts with SCOPE. */ | |
76a01679 | 4531 | |
96d887e8 PH |
4532 | /* If the function name starts with "_ada_", it means that it is |
4533 | a library-level function. Strip this prefix before doing the | |
4534 | comparison, as the encoding for the renaming does not contain | |
4535 | this prefix. */ | |
4536 | if (strncmp (function_name, "_ada_", 5) == 0) | |
4537 | function_name += 5; | |
f26caa11 | 4538 | |
aeb5907d | 4539 | return (strncmp (function_name, scope, strlen (scope)) != 0); |
f26caa11 PH |
4540 | } |
4541 | ||
aeb5907d JB |
4542 | /* Remove entries from SYMS that corresponds to a renaming entity that |
4543 | is not visible from the function associated with CURRENT_BLOCK or | |
4544 | that is superfluous due to the presence of more specific renaming | |
4545 | information. Places surviving symbols in the initial entries of | |
4546 | SYMS and returns the number of surviving symbols. | |
96d887e8 PH |
4547 | |
4548 | Rationale: | |
aeb5907d JB |
4549 | First, in cases where an object renaming is implemented as a |
4550 | reference variable, GNAT may produce both the actual reference | |
4551 | variable and the renaming encoding. In this case, we discard the | |
4552 | latter. | |
4553 | ||
4554 | Second, GNAT emits a type following a specified encoding for each renaming | |
96d887e8 PH |
4555 | entity. Unfortunately, STABS currently does not support the definition |
4556 | of types that are local to a given lexical block, so all renamings types | |
4557 | are emitted at library level. As a consequence, if an application | |
4558 | contains two renaming entities using the same name, and a user tries to | |
4559 | print the value of one of these entities, the result of the ada symbol | |
4560 | lookup will also contain the wrong renaming type. | |
f26caa11 | 4561 | |
96d887e8 PH |
4562 | This function partially covers for this limitation by attempting to |
4563 | remove from the SYMS list renaming symbols that should be visible | |
4564 | from CURRENT_BLOCK. However, there does not seem be a 100% reliable | |
4565 | method with the current information available. The implementation | |
4566 | below has a couple of limitations (FIXME: brobecker-2003-05-12): | |
4567 | ||
4568 | - When the user tries to print a rename in a function while there | |
4569 | is another rename entity defined in a package: Normally, the | |
4570 | rename in the function has precedence over the rename in the | |
4571 | package, so the latter should be removed from the list. This is | |
4572 | currently not the case. | |
4573 | ||
4574 | - This function will incorrectly remove valid renames if | |
4575 | the CURRENT_BLOCK corresponds to a function which symbol name | |
4576 | has been changed by an "Export" pragma. As a consequence, | |
4577 | the user will be unable to print such rename entities. */ | |
4c4b4cd2 | 4578 | |
14f9c5c9 | 4579 | static int |
aeb5907d JB |
4580 | remove_irrelevant_renamings (struct ada_symbol_info *syms, |
4581 | int nsyms, const struct block *current_block) | |
4c4b4cd2 PH |
4582 | { |
4583 | struct symbol *current_function; | |
4584 | char *current_function_name; | |
4585 | int i; | |
aeb5907d JB |
4586 | int is_new_style_renaming; |
4587 | ||
4588 | /* If there is both a renaming foo___XR... encoded as a variable and | |
4589 | a simple variable foo in the same block, discard the latter. | |
4590 | First, zero out such symbols, then compress. */ | |
4591 | is_new_style_renaming = 0; | |
4592 | for (i = 0; i < nsyms; i += 1) | |
4593 | { | |
4594 | struct symbol *sym = syms[i].sym; | |
4595 | struct block *block = syms[i].block; | |
4596 | const char *name; | |
4597 | const char *suffix; | |
4598 | ||
4599 | if (sym == NULL || SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
4600 | continue; | |
4601 | name = SYMBOL_LINKAGE_NAME (sym); | |
4602 | suffix = strstr (name, "___XR"); | |
4603 | ||
4604 | if (suffix != NULL) | |
4605 | { | |
4606 | int name_len = suffix - name; | |
4607 | int j; | |
4608 | is_new_style_renaming = 1; | |
4609 | for (j = 0; j < nsyms; j += 1) | |
4610 | if (i != j && syms[j].sym != NULL | |
4611 | && strncmp (name, SYMBOL_LINKAGE_NAME (syms[j].sym), | |
4612 | name_len) == 0 | |
4613 | && block == syms[j].block) | |
4614 | syms[j].sym = NULL; | |
4615 | } | |
4616 | } | |
4617 | if (is_new_style_renaming) | |
4618 | { | |
4619 | int j, k; | |
4620 | ||
4621 | for (j = k = 0; j < nsyms; j += 1) | |
4622 | if (syms[j].sym != NULL) | |
4623 | { | |
4624 | syms[k] = syms[j]; | |
4625 | k += 1; | |
4626 | } | |
4627 | return k; | |
4628 | } | |
4c4b4cd2 PH |
4629 | |
4630 | /* Extract the function name associated to CURRENT_BLOCK. | |
4631 | Abort if unable to do so. */ | |
76a01679 | 4632 | |
4c4b4cd2 PH |
4633 | if (current_block == NULL) |
4634 | return nsyms; | |
76a01679 | 4635 | |
4c4b4cd2 PH |
4636 | current_function = block_function (current_block); |
4637 | if (current_function == NULL) | |
4638 | return nsyms; | |
4639 | ||
4640 | current_function_name = SYMBOL_LINKAGE_NAME (current_function); | |
4641 | if (current_function_name == NULL) | |
4642 | return nsyms; | |
4643 | ||
4644 | /* Check each of the symbols, and remove it from the list if it is | |
4645 | a type corresponding to a renaming that is out of the scope of | |
4646 | the current block. */ | |
4647 | ||
4648 | i = 0; | |
4649 | while (i < nsyms) | |
4650 | { | |
aeb5907d JB |
4651 | if (ada_parse_renaming (syms[i].sym, NULL, NULL, NULL) |
4652 | == ADA_OBJECT_RENAMING | |
4653 | && old_renaming_is_invisible (syms[i].sym, current_function_name)) | |
4c4b4cd2 PH |
4654 | { |
4655 | int j; | |
aeb5907d | 4656 | for (j = i + 1; j < nsyms; j += 1) |
76a01679 | 4657 | syms[j - 1] = syms[j]; |
4c4b4cd2 PH |
4658 | nsyms -= 1; |
4659 | } | |
4660 | else | |
4661 | i += 1; | |
4662 | } | |
4663 | ||
4664 | return nsyms; | |
4665 | } | |
4666 | ||
4667 | /* Find symbols in DOMAIN matching NAME0, in BLOCK0 and enclosing | |
4668 | scope and in global scopes, returning the number of matches. Sets | |
4669 | *RESULTS to point to a vector of (SYM,BLOCK,SYMTAB) triples, | |
4670 | indicating the symbols found and the blocks and symbol tables (if | |
4671 | any) in which they were found. This vector are transient---good only to | |
4672 | the next call of ada_lookup_symbol_list. Any non-function/non-enumeral | |
4673 | symbol match within the nest of blocks whose innermost member is BLOCK0, | |
4674 | is the one match returned (no other matches in that or | |
4675 | enclosing blocks is returned). If there are any matches in or | |
4676 | surrounding BLOCK0, then these alone are returned. Otherwise, the | |
4677 | search extends to global and file-scope (static) symbol tables. | |
4678 | Names prefixed with "standard__" are handled specially: "standard__" | |
4679 | is first stripped off, and only static and global symbols are searched. */ | |
14f9c5c9 AS |
4680 | |
4681 | int | |
4c4b4cd2 | 4682 | ada_lookup_symbol_list (const char *name0, const struct block *block0, |
76a01679 JB |
4683 | domain_enum namespace, |
4684 | struct ada_symbol_info **results) | |
14f9c5c9 AS |
4685 | { |
4686 | struct symbol *sym; | |
4687 | struct symtab *s; | |
4688 | struct partial_symtab *ps; | |
4689 | struct blockvector *bv; | |
4690 | struct objfile *objfile; | |
14f9c5c9 | 4691 | struct block *block; |
4c4b4cd2 | 4692 | const char *name; |
14f9c5c9 | 4693 | struct minimal_symbol *msymbol; |
4c4b4cd2 | 4694 | int wild_match; |
14f9c5c9 | 4695 | int cacheIfUnique; |
4c4b4cd2 PH |
4696 | int block_depth; |
4697 | int ndefns; | |
14f9c5c9 | 4698 | |
4c4b4cd2 PH |
4699 | obstack_free (&symbol_list_obstack, NULL); |
4700 | obstack_init (&symbol_list_obstack); | |
14f9c5c9 | 4701 | |
14f9c5c9 AS |
4702 | cacheIfUnique = 0; |
4703 | ||
4704 | /* Search specified block and its superiors. */ | |
4705 | ||
4c4b4cd2 PH |
4706 | wild_match = (strstr (name0, "__") == NULL); |
4707 | name = name0; | |
76a01679 JB |
4708 | block = (struct block *) block0; /* FIXME: No cast ought to be |
4709 | needed, but adding const will | |
4710 | have a cascade effect. */ | |
4c4b4cd2 PH |
4711 | if (strncmp (name0, "standard__", sizeof ("standard__") - 1) == 0) |
4712 | { | |
4713 | wild_match = 0; | |
4714 | block = NULL; | |
4715 | name = name0 + sizeof ("standard__") - 1; | |
4716 | } | |
4717 | ||
4718 | block_depth = 0; | |
14f9c5c9 AS |
4719 | while (block != NULL) |
4720 | { | |
4c4b4cd2 | 4721 | block_depth += 1; |
76a01679 | 4722 | ada_add_block_symbols (&symbol_list_obstack, block, name, |
2570f2b7 | 4723 | namespace, NULL, wild_match); |
14f9c5c9 | 4724 | |
4c4b4cd2 PH |
4725 | /* If we found a non-function match, assume that's the one. */ |
4726 | if (is_nonfunction (defns_collected (&symbol_list_obstack, 0), | |
76a01679 | 4727 | num_defns_collected (&symbol_list_obstack))) |
4c4b4cd2 | 4728 | goto done; |
14f9c5c9 AS |
4729 | |
4730 | block = BLOCK_SUPERBLOCK (block); | |
4731 | } | |
4732 | ||
4c4b4cd2 PH |
4733 | /* If no luck so far, try to find NAME as a local symbol in some lexically |
4734 | enclosing subprogram. */ | |
4735 | if (num_defns_collected (&symbol_list_obstack) == 0 && block_depth > 2) | |
4736 | add_symbols_from_enclosing_procs (&symbol_list_obstack, | |
76a01679 | 4737 | name, namespace, wild_match); |
4c4b4cd2 PH |
4738 | |
4739 | /* If we found ANY matches among non-global symbols, we're done. */ | |
14f9c5c9 | 4740 | |
4c4b4cd2 | 4741 | if (num_defns_collected (&symbol_list_obstack) > 0) |
14f9c5c9 | 4742 | goto done; |
d2e4a39e | 4743 | |
14f9c5c9 | 4744 | cacheIfUnique = 1; |
2570f2b7 | 4745 | if (lookup_cached_symbol (name0, namespace, &sym, &block)) |
4c4b4cd2 PH |
4746 | { |
4747 | if (sym != NULL) | |
2570f2b7 | 4748 | add_defn_to_vec (&symbol_list_obstack, sym, block); |
4c4b4cd2 PH |
4749 | goto done; |
4750 | } | |
14f9c5c9 AS |
4751 | |
4752 | /* Now add symbols from all global blocks: symbol tables, minimal symbol | |
4c4b4cd2 | 4753 | tables, and psymtab's. */ |
14f9c5c9 | 4754 | |
11309657 | 4755 | ALL_PRIMARY_SYMTABS (objfile, s) |
d2e4a39e AS |
4756 | { |
4757 | QUIT; | |
d2e4a39e AS |
4758 | bv = BLOCKVECTOR (s); |
4759 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
76a01679 | 4760 | ada_add_block_symbols (&symbol_list_obstack, block, name, namespace, |
2570f2b7 | 4761 | objfile, wild_match); |
d2e4a39e | 4762 | } |
14f9c5c9 | 4763 | |
4c4b4cd2 | 4764 | if (namespace == VAR_DOMAIN) |
14f9c5c9 AS |
4765 | { |
4766 | ALL_MSYMBOLS (objfile, msymbol) | |
d2e4a39e | 4767 | { |
4c4b4cd2 PH |
4768 | if (ada_match_name (SYMBOL_LINKAGE_NAME (msymbol), name, wild_match)) |
4769 | { | |
4770 | switch (MSYMBOL_TYPE (msymbol)) | |
4771 | { | |
4772 | case mst_solib_trampoline: | |
4773 | break; | |
4774 | default: | |
4775 | s = find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)); | |
4776 | if (s != NULL) | |
4777 | { | |
4778 | int ndefns0 = num_defns_collected (&symbol_list_obstack); | |
4779 | QUIT; | |
4780 | bv = BLOCKVECTOR (s); | |
4781 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
4782 | ada_add_block_symbols (&symbol_list_obstack, block, | |
4783 | SYMBOL_LINKAGE_NAME (msymbol), | |
2570f2b7 | 4784 | namespace, objfile, wild_match); |
76a01679 | 4785 | |
4c4b4cd2 PH |
4786 | if (num_defns_collected (&symbol_list_obstack) == ndefns0) |
4787 | { | |
4788 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
4789 | ada_add_block_symbols (&symbol_list_obstack, block, | |
4790 | SYMBOL_LINKAGE_NAME (msymbol), | |
2570f2b7 | 4791 | namespace, objfile, |
4c4b4cd2 PH |
4792 | wild_match); |
4793 | } | |
4794 | } | |
4795 | } | |
4796 | } | |
d2e4a39e | 4797 | } |
14f9c5c9 | 4798 | } |
d2e4a39e | 4799 | |
14f9c5c9 | 4800 | ALL_PSYMTABS (objfile, ps) |
d2e4a39e AS |
4801 | { |
4802 | QUIT; | |
4803 | if (!ps->readin | |
4c4b4cd2 | 4804 | && ada_lookup_partial_symbol (ps, name, 1, namespace, wild_match)) |
d2e4a39e | 4805 | { |
4c4b4cd2 PH |
4806 | s = PSYMTAB_TO_SYMTAB (ps); |
4807 | if (!s->primary) | |
4808 | continue; | |
4809 | bv = BLOCKVECTOR (s); | |
4810 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
4811 | ada_add_block_symbols (&symbol_list_obstack, block, name, | |
2570f2b7 | 4812 | namespace, objfile, wild_match); |
d2e4a39e AS |
4813 | } |
4814 | } | |
4815 | ||
4c4b4cd2 | 4816 | /* Now add symbols from all per-file blocks if we've gotten no hits |
14f9c5c9 | 4817 | (Not strictly correct, but perhaps better than an error). |
4c4b4cd2 | 4818 | Do the symtabs first, then check the psymtabs. */ |
d2e4a39e | 4819 | |
4c4b4cd2 | 4820 | if (num_defns_collected (&symbol_list_obstack) == 0) |
14f9c5c9 AS |
4821 | { |
4822 | ||
11309657 | 4823 | ALL_PRIMARY_SYMTABS (objfile, s) |
d2e4a39e | 4824 | { |
4c4b4cd2 | 4825 | QUIT; |
4c4b4cd2 PH |
4826 | bv = BLOCKVECTOR (s); |
4827 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
76a01679 | 4828 | ada_add_block_symbols (&symbol_list_obstack, block, name, namespace, |
2570f2b7 | 4829 | objfile, wild_match); |
d2e4a39e AS |
4830 | } |
4831 | ||
14f9c5c9 | 4832 | ALL_PSYMTABS (objfile, ps) |
d2e4a39e | 4833 | { |
4c4b4cd2 PH |
4834 | QUIT; |
4835 | if (!ps->readin | |
4836 | && ada_lookup_partial_symbol (ps, name, 0, namespace, wild_match)) | |
4837 | { | |
4838 | s = PSYMTAB_TO_SYMTAB (ps); | |
4839 | bv = BLOCKVECTOR (s); | |
4840 | if (!s->primary) | |
4841 | continue; | |
4842 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
76a01679 | 4843 | ada_add_block_symbols (&symbol_list_obstack, block, name, |
2570f2b7 | 4844 | namespace, objfile, wild_match); |
4c4b4cd2 | 4845 | } |
d2e4a39e AS |
4846 | } |
4847 | } | |
14f9c5c9 | 4848 | |
4c4b4cd2 PH |
4849 | done: |
4850 | ndefns = num_defns_collected (&symbol_list_obstack); | |
4851 | *results = defns_collected (&symbol_list_obstack, 1); | |
4852 | ||
4853 | ndefns = remove_extra_symbols (*results, ndefns); | |
4854 | ||
d2e4a39e | 4855 | if (ndefns == 0) |
2570f2b7 | 4856 | cache_symbol (name0, namespace, NULL, NULL); |
14f9c5c9 | 4857 | |
4c4b4cd2 | 4858 | if (ndefns == 1 && cacheIfUnique) |
2570f2b7 | 4859 | cache_symbol (name0, namespace, (*results)[0].sym, (*results)[0].block); |
14f9c5c9 | 4860 | |
aeb5907d | 4861 | ndefns = remove_irrelevant_renamings (*results, ndefns, block0); |
14f9c5c9 | 4862 | |
14f9c5c9 AS |
4863 | return ndefns; |
4864 | } | |
4865 | ||
d2e4a39e | 4866 | struct symbol * |
aeb5907d | 4867 | ada_lookup_encoded_symbol (const char *name, const struct block *block0, |
21b556f4 | 4868 | domain_enum namespace, struct block **block_found) |
14f9c5c9 | 4869 | { |
4c4b4cd2 | 4870 | struct ada_symbol_info *candidates; |
14f9c5c9 AS |
4871 | int n_candidates; |
4872 | ||
aeb5907d | 4873 | n_candidates = ada_lookup_symbol_list (name, block0, namespace, &candidates); |
14f9c5c9 AS |
4874 | |
4875 | if (n_candidates == 0) | |
4876 | return NULL; | |
4c4b4cd2 | 4877 | |
aeb5907d JB |
4878 | if (block_found != NULL) |
4879 | *block_found = candidates[0].block; | |
4c4b4cd2 | 4880 | |
21b556f4 | 4881 | return fixup_symbol_section (candidates[0].sym, NULL); |
aeb5907d JB |
4882 | } |
4883 | ||
4884 | /* Return a symbol in DOMAIN matching NAME, in BLOCK0 and enclosing | |
4885 | scope and in global scopes, or NULL if none. NAME is folded and | |
4886 | encoded first. Otherwise, the result is as for ada_lookup_symbol_list, | |
4887 | choosing the first symbol if there are multiple choices. | |
4888 | *IS_A_FIELD_OF_THIS is set to 0 and *SYMTAB is set to the symbol | |
4889 | table in which the symbol was found (in both cases, these | |
4890 | assignments occur only if the pointers are non-null). */ | |
4891 | struct symbol * | |
4892 | ada_lookup_symbol (const char *name, const struct block *block0, | |
21b556f4 | 4893 | domain_enum namespace, int *is_a_field_of_this) |
aeb5907d JB |
4894 | { |
4895 | if (is_a_field_of_this != NULL) | |
4896 | *is_a_field_of_this = 0; | |
4897 | ||
4898 | return | |
4899 | ada_lookup_encoded_symbol (ada_encode (ada_fold_name (name)), | |
21b556f4 | 4900 | block0, namespace, NULL); |
4c4b4cd2 | 4901 | } |
14f9c5c9 | 4902 | |
4c4b4cd2 PH |
4903 | static struct symbol * |
4904 | ada_lookup_symbol_nonlocal (const char *name, | |
76a01679 JB |
4905 | const char *linkage_name, |
4906 | const struct block *block, | |
21b556f4 | 4907 | const domain_enum domain) |
4c4b4cd2 PH |
4908 | { |
4909 | if (linkage_name == NULL) | |
4910 | linkage_name = name; | |
76a01679 | 4911 | return ada_lookup_symbol (linkage_name, block_static_block (block), domain, |
21b556f4 | 4912 | NULL); |
14f9c5c9 AS |
4913 | } |
4914 | ||
4915 | ||
4c4b4cd2 PH |
4916 | /* True iff STR is a possible encoded suffix of a normal Ada name |
4917 | that is to be ignored for matching purposes. Suffixes of parallel | |
4918 | names (e.g., XVE) are not included here. Currently, the possible suffixes | |
4919 | are given by either of the regular expression: | |
4920 | ||
babe1480 JB |
4921 | [.$][0-9]+ [nested subprogram suffix, on platforms such as GNU/Linux] |
4922 | ___[0-9]+ [nested subprogram suffix, on platforms such as HP/UX] | |
4923 | _E[0-9]+[bs]$ [protected object entry suffixes] | |
61ee279c | 4924 | (X[nb]*)?((\$|__)[0-9](_?[0-9]+)|___(JM|LJM|X([FDBUP].*|R[^T]?)))?$ |
babe1480 JB |
4925 | |
4926 | Also, any leading "__[0-9]+" sequence is skipped before the suffix | |
4927 | match is performed. This sequence is used to differentiate homonyms, | |
4928 | is an optional part of a valid name suffix. */ | |
4c4b4cd2 | 4929 | |
14f9c5c9 | 4930 | static int |
d2e4a39e | 4931 | is_name_suffix (const char *str) |
14f9c5c9 AS |
4932 | { |
4933 | int k; | |
4c4b4cd2 PH |
4934 | const char *matching; |
4935 | const int len = strlen (str); | |
4936 | ||
babe1480 JB |
4937 | /* Skip optional leading __[0-9]+. */ |
4938 | ||
4c4b4cd2 PH |
4939 | if (len > 3 && str[0] == '_' && str[1] == '_' && isdigit (str[2])) |
4940 | { | |
babe1480 JB |
4941 | str += 3; |
4942 | while (isdigit (str[0])) | |
4943 | str += 1; | |
4c4b4cd2 | 4944 | } |
babe1480 JB |
4945 | |
4946 | /* [.$][0-9]+ */ | |
4c4b4cd2 | 4947 | |
babe1480 | 4948 | if (str[0] == '.' || str[0] == '$') |
4c4b4cd2 | 4949 | { |
babe1480 | 4950 | matching = str + 1; |
4c4b4cd2 PH |
4951 | while (isdigit (matching[0])) |
4952 | matching += 1; | |
4953 | if (matching[0] == '\0') | |
4954 | return 1; | |
4955 | } | |
4956 | ||
4957 | /* ___[0-9]+ */ | |
babe1480 | 4958 | |
4c4b4cd2 PH |
4959 | if (len > 3 && str[0] == '_' && str[1] == '_' && str[2] == '_') |
4960 | { | |
4961 | matching = str + 3; | |
4962 | while (isdigit (matching[0])) | |
4963 | matching += 1; | |
4964 | if (matching[0] == '\0') | |
4965 | return 1; | |
4966 | } | |
4967 | ||
529cad9c PH |
4968 | #if 0 |
4969 | /* FIXME: brobecker/2005-09-23: Protected Object subprograms end | |
4970 | with a N at the end. Unfortunately, the compiler uses the same | |
4971 | convention for other internal types it creates. So treating | |
4972 | all entity names that end with an "N" as a name suffix causes | |
4973 | some regressions. For instance, consider the case of an enumerated | |
4974 | type. To support the 'Image attribute, it creates an array whose | |
4975 | name ends with N. | |
4976 | Having a single character like this as a suffix carrying some | |
4977 | information is a bit risky. Perhaps we should change the encoding | |
4978 | to be something like "_N" instead. In the meantime, do not do | |
4979 | the following check. */ | |
4980 | /* Protected Object Subprograms */ | |
4981 | if (len == 1 && str [0] == 'N') | |
4982 | return 1; | |
4983 | #endif | |
4984 | ||
4985 | /* _E[0-9]+[bs]$ */ | |
4986 | if (len > 3 && str[0] == '_' && str [1] == 'E' && isdigit (str[2])) | |
4987 | { | |
4988 | matching = str + 3; | |
4989 | while (isdigit (matching[0])) | |
4990 | matching += 1; | |
4991 | if ((matching[0] == 'b' || matching[0] == 's') | |
4992 | && matching [1] == '\0') | |
4993 | return 1; | |
4994 | } | |
4995 | ||
4c4b4cd2 PH |
4996 | /* ??? We should not modify STR directly, as we are doing below. This |
4997 | is fine in this case, but may become problematic later if we find | |
4998 | that this alternative did not work, and want to try matching | |
4999 | another one from the begining of STR. Since we modified it, we | |
5000 | won't be able to find the begining of the string anymore! */ | |
14f9c5c9 AS |
5001 | if (str[0] == 'X') |
5002 | { | |
5003 | str += 1; | |
d2e4a39e | 5004 | while (str[0] != '_' && str[0] != '\0') |
4c4b4cd2 PH |
5005 | { |
5006 | if (str[0] != 'n' && str[0] != 'b') | |
5007 | return 0; | |
5008 | str += 1; | |
5009 | } | |
14f9c5c9 | 5010 | } |
babe1480 | 5011 | |
14f9c5c9 AS |
5012 | if (str[0] == '\000') |
5013 | return 1; | |
babe1480 | 5014 | |
d2e4a39e | 5015 | if (str[0] == '_') |
14f9c5c9 AS |
5016 | { |
5017 | if (str[1] != '_' || str[2] == '\000') | |
4c4b4cd2 | 5018 | return 0; |
d2e4a39e | 5019 | if (str[2] == '_') |
4c4b4cd2 | 5020 | { |
61ee279c PH |
5021 | if (strcmp (str + 3, "JM") == 0) |
5022 | return 1; | |
5023 | /* FIXME: brobecker/2004-09-30: GNAT will soon stop using | |
5024 | the LJM suffix in favor of the JM one. But we will | |
5025 | still accept LJM as a valid suffix for a reasonable | |
5026 | amount of time, just to allow ourselves to debug programs | |
5027 | compiled using an older version of GNAT. */ | |
4c4b4cd2 PH |
5028 | if (strcmp (str + 3, "LJM") == 0) |
5029 | return 1; | |
5030 | if (str[3] != 'X') | |
5031 | return 0; | |
1265e4aa JB |
5032 | if (str[4] == 'F' || str[4] == 'D' || str[4] == 'B' |
5033 | || str[4] == 'U' || str[4] == 'P') | |
4c4b4cd2 PH |
5034 | return 1; |
5035 | if (str[4] == 'R' && str[5] != 'T') | |
5036 | return 1; | |
5037 | return 0; | |
5038 | } | |
5039 | if (!isdigit (str[2])) | |
5040 | return 0; | |
5041 | for (k = 3; str[k] != '\0'; k += 1) | |
5042 | if (!isdigit (str[k]) && str[k] != '_') | |
5043 | return 0; | |
14f9c5c9 AS |
5044 | return 1; |
5045 | } | |
4c4b4cd2 | 5046 | if (str[0] == '$' && isdigit (str[1])) |
14f9c5c9 | 5047 | { |
4c4b4cd2 PH |
5048 | for (k = 2; str[k] != '\0'; k += 1) |
5049 | if (!isdigit (str[k]) && str[k] != '_') | |
5050 | return 0; | |
14f9c5c9 AS |
5051 | return 1; |
5052 | } | |
5053 | return 0; | |
5054 | } | |
d2e4a39e | 5055 | |
4c4b4cd2 PH |
5056 | /* Return nonzero if the given string starts with a dot ('.') |
5057 | followed by zero or more digits. | |
5058 | ||
5059 | Note: brobecker/2003-11-10: A forward declaration has not been | |
5060 | added at the begining of this file yet, because this function | |
5061 | is only used to work around a problem found during wild matching | |
5062 | when trying to match minimal symbol names against symbol names | |
5063 | obtained from dwarf-2 data. This function is therefore currently | |
5064 | only used in wild_match() and is likely to be deleted when the | |
5065 | problem in dwarf-2 is fixed. */ | |
5066 | ||
5067 | static int | |
5068 | is_dot_digits_suffix (const char *str) | |
5069 | { | |
5070 | if (str[0] != '.') | |
5071 | return 0; | |
5072 | ||
5073 | str++; | |
5074 | while (isdigit (str[0])) | |
5075 | str++; | |
5076 | return (str[0] == '\0'); | |
5077 | } | |
5078 | ||
aeb5907d JB |
5079 | /* Return non-zero if the string starting at NAME and ending before |
5080 | NAME_END contains no capital letters. */ | |
529cad9c PH |
5081 | |
5082 | static int | |
5083 | is_valid_name_for_wild_match (const char *name0) | |
5084 | { | |
5085 | const char *decoded_name = ada_decode (name0); | |
5086 | int i; | |
5087 | ||
5088 | for (i=0; decoded_name[i] != '\0'; i++) | |
5089 | if (isalpha (decoded_name[i]) && !islower (decoded_name[i])) | |
5090 | return 0; | |
5091 | ||
5092 | return 1; | |
5093 | } | |
5094 | ||
4c4b4cd2 PH |
5095 | /* True if NAME represents a name of the form A1.A2....An, n>=1 and |
5096 | PATN[0..PATN_LEN-1] = Ak.Ak+1.....An for some k >= 1. Ignores | |
5097 | informational suffixes of NAME (i.e., for which is_name_suffix is | |
5098 | true). */ | |
5099 | ||
14f9c5c9 | 5100 | static int |
4c4b4cd2 | 5101 | wild_match (const char *patn0, int patn_len, const char *name0) |
14f9c5c9 AS |
5102 | { |
5103 | int name_len; | |
4c4b4cd2 | 5104 | char *name; |
aeb5907d | 5105 | char *name_start; |
4c4b4cd2 PH |
5106 | char *patn; |
5107 | ||
5108 | /* FIXME: brobecker/2003-11-10: For some reason, the symbol name | |
5109 | stored in the symbol table for nested function names is sometimes | |
5110 | different from the name of the associated entity stored in | |
5111 | the dwarf-2 data: This is the case for nested subprograms, where | |
5112 | the minimal symbol name contains a trailing ".[:digit:]+" suffix, | |
5113 | while the symbol name from the dwarf-2 data does not. | |
5114 | ||
5115 | Although the DWARF-2 standard documents that entity names stored | |
5116 | in the dwarf-2 data should be identical to the name as seen in | |
5117 | the source code, GNAT takes a different approach as we already use | |
5118 | a special encoding mechanism to convey the information so that | |
5119 | a C debugger can still use the information generated to debug | |
5120 | Ada programs. A corollary is that the symbol names in the dwarf-2 | |
5121 | data should match the names found in the symbol table. I therefore | |
5122 | consider this issue as a compiler defect. | |
76a01679 | 5123 | |
4c4b4cd2 PH |
5124 | Until the compiler is properly fixed, we work-around the problem |
5125 | by ignoring such suffixes during the match. We do so by making | |
5126 | a copy of PATN0 and NAME0, and then by stripping such a suffix | |
5127 | if present. We then perform the match on the resulting strings. */ | |
5128 | { | |
5129 | char *dot; | |
5130 | name_len = strlen (name0); | |
5131 | ||
aeb5907d | 5132 | name = name_start = (char *) alloca ((name_len + 1) * sizeof (char)); |
4c4b4cd2 PH |
5133 | strcpy (name, name0); |
5134 | dot = strrchr (name, '.'); | |
5135 | if (dot != NULL && is_dot_digits_suffix (dot)) | |
5136 | *dot = '\0'; | |
5137 | ||
5138 | patn = (char *) alloca ((patn_len + 1) * sizeof (char)); | |
5139 | strncpy (patn, patn0, patn_len); | |
5140 | patn[patn_len] = '\0'; | |
5141 | dot = strrchr (patn, '.'); | |
5142 | if (dot != NULL && is_dot_digits_suffix (dot)) | |
5143 | { | |
5144 | *dot = '\0'; | |
5145 | patn_len = dot - patn; | |
5146 | } | |
5147 | } | |
5148 | ||
5149 | /* Now perform the wild match. */ | |
14f9c5c9 AS |
5150 | |
5151 | name_len = strlen (name); | |
4c4b4cd2 PH |
5152 | if (name_len >= patn_len + 5 && strncmp (name, "_ada_", 5) == 0 |
5153 | && strncmp (patn, name + 5, patn_len) == 0 | |
d2e4a39e | 5154 | && is_name_suffix (name + patn_len + 5)) |
14f9c5c9 AS |
5155 | return 1; |
5156 | ||
d2e4a39e | 5157 | while (name_len >= patn_len) |
14f9c5c9 | 5158 | { |
4c4b4cd2 PH |
5159 | if (strncmp (patn, name, patn_len) == 0 |
5160 | && is_name_suffix (name + patn_len)) | |
aeb5907d | 5161 | return (name == name_start || is_valid_name_for_wild_match (name0)); |
4c4b4cd2 PH |
5162 | do |
5163 | { | |
5164 | name += 1; | |
5165 | name_len -= 1; | |
5166 | } | |
d2e4a39e | 5167 | while (name_len > 0 |
4c4b4cd2 | 5168 | && name[0] != '.' && (name[0] != '_' || name[1] != '_')); |
14f9c5c9 | 5169 | if (name_len <= 0) |
4c4b4cd2 | 5170 | return 0; |
14f9c5c9 | 5171 | if (name[0] == '_') |
4c4b4cd2 PH |
5172 | { |
5173 | if (!islower (name[2])) | |
5174 | return 0; | |
5175 | name += 2; | |
5176 | name_len -= 2; | |
5177 | } | |
14f9c5c9 | 5178 | else |
4c4b4cd2 PH |
5179 | { |
5180 | if (!islower (name[1])) | |
5181 | return 0; | |
5182 | name += 1; | |
5183 | name_len -= 1; | |
5184 | } | |
96d887e8 PH |
5185 | } |
5186 | ||
5187 | return 0; | |
5188 | } | |
5189 | ||
5190 | ||
5191 | /* Add symbols from BLOCK matching identifier NAME in DOMAIN to | |
5192 | vector *defn_symbols, updating the list of symbols in OBSTACKP | |
5193 | (if necessary). If WILD, treat as NAME with a wildcard prefix. | |
5194 | OBJFILE is the section containing BLOCK. | |
5195 | SYMTAB is recorded with each symbol added. */ | |
5196 | ||
5197 | static void | |
5198 | ada_add_block_symbols (struct obstack *obstackp, | |
76a01679 | 5199 | struct block *block, const char *name, |
96d887e8 | 5200 | domain_enum domain, struct objfile *objfile, |
2570f2b7 | 5201 | int wild) |
96d887e8 PH |
5202 | { |
5203 | struct dict_iterator iter; | |
5204 | int name_len = strlen (name); | |
5205 | /* A matching argument symbol, if any. */ | |
5206 | struct symbol *arg_sym; | |
5207 | /* Set true when we find a matching non-argument symbol. */ | |
5208 | int found_sym; | |
5209 | struct symbol *sym; | |
5210 | ||
5211 | arg_sym = NULL; | |
5212 | found_sym = 0; | |
5213 | if (wild) | |
5214 | { | |
5215 | struct symbol *sym; | |
5216 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
76a01679 | 5217 | { |
5eeb2539 AR |
5218 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
5219 | SYMBOL_DOMAIN (sym), domain) | |
1265e4aa | 5220 | && wild_match (name, name_len, SYMBOL_LINKAGE_NAME (sym))) |
76a01679 JB |
5221 | { |
5222 | switch (SYMBOL_CLASS (sym)) | |
5223 | { | |
5224 | case LOC_ARG: | |
5225 | case LOC_LOCAL_ARG: | |
5226 | case LOC_REF_ARG: | |
5227 | case LOC_REGPARM: | |
5228 | case LOC_REGPARM_ADDR: | |
5229 | case LOC_BASEREG_ARG: | |
5230 | case LOC_COMPUTED_ARG: | |
5231 | arg_sym = sym; | |
5232 | break; | |
5233 | case LOC_UNRESOLVED: | |
5234 | continue; | |
5235 | default: | |
5236 | found_sym = 1; | |
5237 | add_defn_to_vec (obstackp, | |
5238 | fixup_symbol_section (sym, objfile), | |
2570f2b7 | 5239 | block); |
76a01679 JB |
5240 | break; |
5241 | } | |
5242 | } | |
5243 | } | |
96d887e8 PH |
5244 | } |
5245 | else | |
5246 | { | |
5247 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
76a01679 | 5248 | { |
5eeb2539 AR |
5249 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
5250 | SYMBOL_DOMAIN (sym), domain)) | |
76a01679 JB |
5251 | { |
5252 | int cmp = strncmp (name, SYMBOL_LINKAGE_NAME (sym), name_len); | |
5253 | if (cmp == 0 | |
5254 | && is_name_suffix (SYMBOL_LINKAGE_NAME (sym) + name_len)) | |
5255 | { | |
5256 | switch (SYMBOL_CLASS (sym)) | |
5257 | { | |
5258 | case LOC_ARG: | |
5259 | case LOC_LOCAL_ARG: | |
5260 | case LOC_REF_ARG: | |
5261 | case LOC_REGPARM: | |
5262 | case LOC_REGPARM_ADDR: | |
5263 | case LOC_BASEREG_ARG: | |
5264 | case LOC_COMPUTED_ARG: | |
5265 | arg_sym = sym; | |
5266 | break; | |
5267 | case LOC_UNRESOLVED: | |
5268 | break; | |
5269 | default: | |
5270 | found_sym = 1; | |
5271 | add_defn_to_vec (obstackp, | |
5272 | fixup_symbol_section (sym, objfile), | |
2570f2b7 | 5273 | block); |
76a01679 JB |
5274 | break; |
5275 | } | |
5276 | } | |
5277 | } | |
5278 | } | |
96d887e8 PH |
5279 | } |
5280 | ||
5281 | if (!found_sym && arg_sym != NULL) | |
5282 | { | |
76a01679 JB |
5283 | add_defn_to_vec (obstackp, |
5284 | fixup_symbol_section (arg_sym, objfile), | |
2570f2b7 | 5285 | block); |
96d887e8 PH |
5286 | } |
5287 | ||
5288 | if (!wild) | |
5289 | { | |
5290 | arg_sym = NULL; | |
5291 | found_sym = 0; | |
5292 | ||
5293 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
76a01679 | 5294 | { |
5eeb2539 AR |
5295 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
5296 | SYMBOL_DOMAIN (sym), domain)) | |
76a01679 JB |
5297 | { |
5298 | int cmp; | |
5299 | ||
5300 | cmp = (int) '_' - (int) SYMBOL_LINKAGE_NAME (sym)[0]; | |
5301 | if (cmp == 0) | |
5302 | { | |
5303 | cmp = strncmp ("_ada_", SYMBOL_LINKAGE_NAME (sym), 5); | |
5304 | if (cmp == 0) | |
5305 | cmp = strncmp (name, SYMBOL_LINKAGE_NAME (sym) + 5, | |
5306 | name_len); | |
5307 | } | |
5308 | ||
5309 | if (cmp == 0 | |
5310 | && is_name_suffix (SYMBOL_LINKAGE_NAME (sym) + name_len + 5)) | |
5311 | { | |
5312 | switch (SYMBOL_CLASS (sym)) | |
5313 | { | |
5314 | case LOC_ARG: | |
5315 | case LOC_LOCAL_ARG: | |
5316 | case LOC_REF_ARG: | |
5317 | case LOC_REGPARM: | |
5318 | case LOC_REGPARM_ADDR: | |
5319 | case LOC_BASEREG_ARG: | |
5320 | case LOC_COMPUTED_ARG: | |
5321 | arg_sym = sym; | |
5322 | break; | |
5323 | case LOC_UNRESOLVED: | |
5324 | break; | |
5325 | default: | |
5326 | found_sym = 1; | |
5327 | add_defn_to_vec (obstackp, | |
5328 | fixup_symbol_section (sym, objfile), | |
2570f2b7 | 5329 | block); |
76a01679 JB |
5330 | break; |
5331 | } | |
5332 | } | |
5333 | } | |
76a01679 | 5334 | } |
96d887e8 PH |
5335 | |
5336 | /* NOTE: This really shouldn't be needed for _ada_ symbols. | |
5337 | They aren't parameters, right? */ | |
5338 | if (!found_sym && arg_sym != NULL) | |
5339 | { | |
5340 | add_defn_to_vec (obstackp, | |
76a01679 | 5341 | fixup_symbol_section (arg_sym, objfile), |
2570f2b7 | 5342 | block); |
96d887e8 PH |
5343 | } |
5344 | } | |
5345 | } | |
5346 | \f | |
41d27058 JB |
5347 | |
5348 | /* Symbol Completion */ | |
5349 | ||
5350 | /* If SYM_NAME is a completion candidate for TEXT, return this symbol | |
5351 | name in a form that's appropriate for the completion. The result | |
5352 | does not need to be deallocated, but is only good until the next call. | |
5353 | ||
5354 | TEXT_LEN is equal to the length of TEXT. | |
5355 | Perform a wild match if WILD_MATCH is set. | |
5356 | ENCODED should be set if TEXT represents the start of a symbol name | |
5357 | in its encoded form. */ | |
5358 | ||
5359 | static const char * | |
5360 | symbol_completion_match (const char *sym_name, | |
5361 | const char *text, int text_len, | |
5362 | int wild_match, int encoded) | |
5363 | { | |
5364 | char *result; | |
5365 | const int verbatim_match = (text[0] == '<'); | |
5366 | int match = 0; | |
5367 | ||
5368 | if (verbatim_match) | |
5369 | { | |
5370 | /* Strip the leading angle bracket. */ | |
5371 | text = text + 1; | |
5372 | text_len--; | |
5373 | } | |
5374 | ||
5375 | /* First, test against the fully qualified name of the symbol. */ | |
5376 | ||
5377 | if (strncmp (sym_name, text, text_len) == 0) | |
5378 | match = 1; | |
5379 | ||
5380 | if (match && !encoded) | |
5381 | { | |
5382 | /* One needed check before declaring a positive match is to verify | |
5383 | that iff we are doing a verbatim match, the decoded version | |
5384 | of the symbol name starts with '<'. Otherwise, this symbol name | |
5385 | is not a suitable completion. */ | |
5386 | const char *sym_name_copy = sym_name; | |
5387 | int has_angle_bracket; | |
5388 | ||
5389 | sym_name = ada_decode (sym_name); | |
5390 | has_angle_bracket = (sym_name[0] == '<'); | |
5391 | match = (has_angle_bracket == verbatim_match); | |
5392 | sym_name = sym_name_copy; | |
5393 | } | |
5394 | ||
5395 | if (match && !verbatim_match) | |
5396 | { | |
5397 | /* When doing non-verbatim match, another check that needs to | |
5398 | be done is to verify that the potentially matching symbol name | |
5399 | does not include capital letters, because the ada-mode would | |
5400 | not be able to understand these symbol names without the | |
5401 | angle bracket notation. */ | |
5402 | const char *tmp; | |
5403 | ||
5404 | for (tmp = sym_name; *tmp != '\0' && !isupper (*tmp); tmp++); | |
5405 | if (*tmp != '\0') | |
5406 | match = 0; | |
5407 | } | |
5408 | ||
5409 | /* Second: Try wild matching... */ | |
5410 | ||
5411 | if (!match && wild_match) | |
5412 | { | |
5413 | /* Since we are doing wild matching, this means that TEXT | |
5414 | may represent an unqualified symbol name. We therefore must | |
5415 | also compare TEXT against the unqualified name of the symbol. */ | |
5416 | sym_name = ada_unqualified_name (ada_decode (sym_name)); | |
5417 | ||
5418 | if (strncmp (sym_name, text, text_len) == 0) | |
5419 | match = 1; | |
5420 | } | |
5421 | ||
5422 | /* Finally: If we found a mach, prepare the result to return. */ | |
5423 | ||
5424 | if (!match) | |
5425 | return NULL; | |
5426 | ||
5427 | if (verbatim_match) | |
5428 | sym_name = add_angle_brackets (sym_name); | |
5429 | ||
5430 | if (!encoded) | |
5431 | sym_name = ada_decode (sym_name); | |
5432 | ||
5433 | return sym_name; | |
5434 | } | |
5435 | ||
2ba95b9b JB |
5436 | typedef char *char_ptr; |
5437 | DEF_VEC_P (char_ptr); | |
5438 | ||
41d27058 JB |
5439 | /* A companion function to ada_make_symbol_completion_list(). |
5440 | Check if SYM_NAME represents a symbol which name would be suitable | |
5441 | to complete TEXT (TEXT_LEN is the length of TEXT), in which case | |
5442 | it is appended at the end of the given string vector SV. | |
5443 | ||
5444 | ORIG_TEXT is the string original string from the user command | |
5445 | that needs to be completed. WORD is the entire command on which | |
5446 | completion should be performed. These two parameters are used to | |
5447 | determine which part of the symbol name should be added to the | |
5448 | completion vector. | |
5449 | if WILD_MATCH is set, then wild matching is performed. | |
5450 | ENCODED should be set if TEXT represents a symbol name in its | |
5451 | encoded formed (in which case the completion should also be | |
5452 | encoded). */ | |
5453 | ||
5454 | static void | |
d6565258 | 5455 | symbol_completion_add (VEC(char_ptr) **sv, |
41d27058 JB |
5456 | const char *sym_name, |
5457 | const char *text, int text_len, | |
5458 | const char *orig_text, const char *word, | |
5459 | int wild_match, int encoded) | |
5460 | { | |
5461 | const char *match = symbol_completion_match (sym_name, text, text_len, | |
5462 | wild_match, encoded); | |
5463 | char *completion; | |
5464 | ||
5465 | if (match == NULL) | |
5466 | return; | |
5467 | ||
5468 | /* We found a match, so add the appropriate completion to the given | |
5469 | string vector. */ | |
5470 | ||
5471 | if (word == orig_text) | |
5472 | { | |
5473 | completion = xmalloc (strlen (match) + 5); | |
5474 | strcpy (completion, match); | |
5475 | } | |
5476 | else if (word > orig_text) | |
5477 | { | |
5478 | /* Return some portion of sym_name. */ | |
5479 | completion = xmalloc (strlen (match) + 5); | |
5480 | strcpy (completion, match + (word - orig_text)); | |
5481 | } | |
5482 | else | |
5483 | { | |
5484 | /* Return some of ORIG_TEXT plus sym_name. */ | |
5485 | completion = xmalloc (strlen (match) + (orig_text - word) + 5); | |
5486 | strncpy (completion, word, orig_text - word); | |
5487 | completion[orig_text - word] = '\0'; | |
5488 | strcat (completion, match); | |
5489 | } | |
5490 | ||
d6565258 | 5491 | VEC_safe_push (char_ptr, *sv, completion); |
41d27058 JB |
5492 | } |
5493 | ||
5494 | /* Return a list of possible symbol names completing TEXT0. The list | |
5495 | is NULL terminated. WORD is the entire command on which completion | |
5496 | is made. */ | |
5497 | ||
5498 | static char ** | |
5499 | ada_make_symbol_completion_list (char *text0, char *word) | |
5500 | { | |
5501 | char *text; | |
5502 | int text_len; | |
5503 | int wild_match; | |
5504 | int encoded; | |
2ba95b9b | 5505 | VEC(char_ptr) *completions = VEC_alloc (char_ptr, 128); |
41d27058 JB |
5506 | struct symbol *sym; |
5507 | struct symtab *s; | |
5508 | struct partial_symtab *ps; | |
5509 | struct minimal_symbol *msymbol; | |
5510 | struct objfile *objfile; | |
5511 | struct block *b, *surrounding_static_block = 0; | |
5512 | int i; | |
5513 | struct dict_iterator iter; | |
5514 | ||
5515 | if (text0[0] == '<') | |
5516 | { | |
5517 | text = xstrdup (text0); | |
5518 | make_cleanup (xfree, text); | |
5519 | text_len = strlen (text); | |
5520 | wild_match = 0; | |
5521 | encoded = 1; | |
5522 | } | |
5523 | else | |
5524 | { | |
5525 | text = xstrdup (ada_encode (text0)); | |
5526 | make_cleanup (xfree, text); | |
5527 | text_len = strlen (text); | |
5528 | for (i = 0; i < text_len; i++) | |
5529 | text[i] = tolower (text[i]); | |
5530 | ||
5531 | encoded = (strstr (text0, "__") != NULL); | |
5532 | /* If the name contains a ".", then the user is entering a fully | |
5533 | qualified entity name, and the match must not be done in wild | |
5534 | mode. Similarly, if the user wants to complete what looks like | |
5535 | an encoded name, the match must not be done in wild mode. */ | |
5536 | wild_match = (strchr (text0, '.') == NULL && !encoded); | |
5537 | } | |
5538 | ||
5539 | /* First, look at the partial symtab symbols. */ | |
5540 | ALL_PSYMTABS (objfile, ps) | |
5541 | { | |
5542 | struct partial_symbol **psym; | |
5543 | ||
5544 | /* If the psymtab's been read in we'll get it when we search | |
5545 | through the blockvector. */ | |
5546 | if (ps->readin) | |
5547 | continue; | |
5548 | ||
5549 | for (psym = objfile->global_psymbols.list + ps->globals_offset; | |
5550 | psym < (objfile->global_psymbols.list + ps->globals_offset | |
5551 | + ps->n_global_syms); psym++) | |
5552 | { | |
5553 | QUIT; | |
d6565258 | 5554 | symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (*psym), |
41d27058 JB |
5555 | text, text_len, text0, word, |
5556 | wild_match, encoded); | |
5557 | } | |
5558 | ||
5559 | for (psym = objfile->static_psymbols.list + ps->statics_offset; | |
5560 | psym < (objfile->static_psymbols.list + ps->statics_offset | |
5561 | + ps->n_static_syms); psym++) | |
5562 | { | |
5563 | QUIT; | |
d6565258 | 5564 | symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (*psym), |
41d27058 JB |
5565 | text, text_len, text0, word, |
5566 | wild_match, encoded); | |
5567 | } | |
5568 | } | |
5569 | ||
5570 | /* At this point scan through the misc symbol vectors and add each | |
5571 | symbol you find to the list. Eventually we want to ignore | |
5572 | anything that isn't a text symbol (everything else will be | |
5573 | handled by the psymtab code above). */ | |
5574 | ||
5575 | ALL_MSYMBOLS (objfile, msymbol) | |
5576 | { | |
5577 | QUIT; | |
d6565258 | 5578 | symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (msymbol), |
41d27058 JB |
5579 | text, text_len, text0, word, wild_match, encoded); |
5580 | } | |
5581 | ||
5582 | /* Search upwards from currently selected frame (so that we can | |
5583 | complete on local vars. */ | |
5584 | ||
5585 | for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b)) | |
5586 | { | |
5587 | if (!BLOCK_SUPERBLOCK (b)) | |
5588 | surrounding_static_block = b; /* For elmin of dups */ | |
5589 | ||
5590 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
5591 | { | |
d6565258 | 5592 | symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (sym), |
41d27058 JB |
5593 | text, text_len, text0, word, |
5594 | wild_match, encoded); | |
5595 | } | |
5596 | } | |
5597 | ||
5598 | /* Go through the symtabs and check the externs and statics for | |
5599 | symbols which match. */ | |
5600 | ||
5601 | ALL_SYMTABS (objfile, s) | |
5602 | { | |
5603 | QUIT; | |
5604 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); | |
5605 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
5606 | { | |
d6565258 | 5607 | symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (sym), |
41d27058 JB |
5608 | text, text_len, text0, word, |
5609 | wild_match, encoded); | |
5610 | } | |
5611 | } | |
5612 | ||
5613 | ALL_SYMTABS (objfile, s) | |
5614 | { | |
5615 | QUIT; | |
5616 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
5617 | /* Don't do this block twice. */ | |
5618 | if (b == surrounding_static_block) | |
5619 | continue; | |
5620 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
5621 | { | |
d6565258 | 5622 | symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (sym), |
41d27058 JB |
5623 | text, text_len, text0, word, |
5624 | wild_match, encoded); | |
5625 | } | |
5626 | } | |
5627 | ||
5628 | /* Append the closing NULL entry. */ | |
2ba95b9b | 5629 | VEC_safe_push (char_ptr, completions, NULL); |
41d27058 | 5630 | |
2ba95b9b JB |
5631 | /* Make a copy of the COMPLETIONS VEC before we free it, and then |
5632 | return the copy. It's unfortunate that we have to make a copy | |
5633 | of an array that we're about to destroy, but there is nothing much | |
5634 | we can do about it. Fortunately, it's typically not a very large | |
5635 | array. */ | |
5636 | { | |
5637 | const size_t completions_size = | |
5638 | VEC_length (char_ptr, completions) * sizeof (char *); | |
5639 | char **result = malloc (completions_size); | |
5640 | ||
5641 | memcpy (result, VEC_address (char_ptr, completions), completions_size); | |
5642 | ||
5643 | VEC_free (char_ptr, completions); | |
5644 | return result; | |
5645 | } | |
41d27058 JB |
5646 | } |
5647 | ||
963a6417 | 5648 | /* Field Access */ |
96d887e8 | 5649 | |
73fb9985 JB |
5650 | /* Return non-zero if TYPE is a pointer to the GNAT dispatch table used |
5651 | for tagged types. */ | |
5652 | ||
5653 | static int | |
5654 | ada_is_dispatch_table_ptr_type (struct type *type) | |
5655 | { | |
5656 | char *name; | |
5657 | ||
5658 | if (TYPE_CODE (type) != TYPE_CODE_PTR) | |
5659 | return 0; | |
5660 | ||
5661 | name = TYPE_NAME (TYPE_TARGET_TYPE (type)); | |
5662 | if (name == NULL) | |
5663 | return 0; | |
5664 | ||
5665 | return (strcmp (name, "ada__tags__dispatch_table") == 0); | |
5666 | } | |
5667 | ||
963a6417 PH |
5668 | /* True if field number FIELD_NUM in struct or union type TYPE is supposed |
5669 | to be invisible to users. */ | |
96d887e8 | 5670 | |
963a6417 PH |
5671 | int |
5672 | ada_is_ignored_field (struct type *type, int field_num) | |
96d887e8 | 5673 | { |
963a6417 PH |
5674 | if (field_num < 0 || field_num > TYPE_NFIELDS (type)) |
5675 | return 1; | |
73fb9985 JB |
5676 | |
5677 | /* Check the name of that field. */ | |
5678 | { | |
5679 | const char *name = TYPE_FIELD_NAME (type, field_num); | |
5680 | ||
5681 | /* Anonymous field names should not be printed. | |
5682 | brobecker/2007-02-20: I don't think this can actually happen | |
5683 | but we don't want to print the value of annonymous fields anyway. */ | |
5684 | if (name == NULL) | |
5685 | return 1; | |
5686 | ||
5687 | /* A field named "_parent" is internally generated by GNAT for | |
5688 | tagged types, and should not be printed either. */ | |
5689 | if (name[0] == '_' && strncmp (name, "_parent", 7) != 0) | |
5690 | return 1; | |
5691 | } | |
5692 | ||
5693 | /* If this is the dispatch table of a tagged type, then ignore. */ | |
5694 | if (ada_is_tagged_type (type, 1) | |
5695 | && ada_is_dispatch_table_ptr_type (TYPE_FIELD_TYPE (type, field_num))) | |
5696 | return 1; | |
5697 | ||
5698 | /* Not a special field, so it should not be ignored. */ | |
5699 | return 0; | |
963a6417 | 5700 | } |
96d887e8 | 5701 | |
963a6417 PH |
5702 | /* True iff TYPE has a tag field. If REFOK, then TYPE may also be a |
5703 | pointer or reference type whose ultimate target has a tag field. */ | |
96d887e8 | 5704 | |
963a6417 PH |
5705 | int |
5706 | ada_is_tagged_type (struct type *type, int refok) | |
5707 | { | |
5708 | return (ada_lookup_struct_elt_type (type, "_tag", refok, 1, NULL) != NULL); | |
5709 | } | |
96d887e8 | 5710 | |
963a6417 | 5711 | /* True iff TYPE represents the type of X'Tag */ |
96d887e8 | 5712 | |
963a6417 PH |
5713 | int |
5714 | ada_is_tag_type (struct type *type) | |
5715 | { | |
5716 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_PTR) | |
5717 | return 0; | |
5718 | else | |
96d887e8 | 5719 | { |
963a6417 PH |
5720 | const char *name = ada_type_name (TYPE_TARGET_TYPE (type)); |
5721 | return (name != NULL | |
5722 | && strcmp (name, "ada__tags__dispatch_table") == 0); | |
96d887e8 | 5723 | } |
96d887e8 PH |
5724 | } |
5725 | ||
963a6417 | 5726 | /* The type of the tag on VAL. */ |
76a01679 | 5727 | |
963a6417 PH |
5728 | struct type * |
5729 | ada_tag_type (struct value *val) | |
96d887e8 | 5730 | { |
df407dfe | 5731 | return ada_lookup_struct_elt_type (value_type (val), "_tag", 1, 0, NULL); |
963a6417 | 5732 | } |
96d887e8 | 5733 | |
963a6417 | 5734 | /* The value of the tag on VAL. */ |
96d887e8 | 5735 | |
963a6417 PH |
5736 | struct value * |
5737 | ada_value_tag (struct value *val) | |
5738 | { | |
03ee6b2e | 5739 | return ada_value_struct_elt (val, "_tag", 0); |
96d887e8 PH |
5740 | } |
5741 | ||
963a6417 PH |
5742 | /* The value of the tag on the object of type TYPE whose contents are |
5743 | saved at VALADDR, if it is non-null, or is at memory address | |
5744 | ADDRESS. */ | |
96d887e8 | 5745 | |
963a6417 | 5746 | static struct value * |
10a2c479 | 5747 | value_tag_from_contents_and_address (struct type *type, |
fc1a4b47 | 5748 | const gdb_byte *valaddr, |
963a6417 | 5749 | CORE_ADDR address) |
96d887e8 | 5750 | { |
963a6417 PH |
5751 | int tag_byte_offset, dummy1, dummy2; |
5752 | struct type *tag_type; | |
5753 | if (find_struct_field ("_tag", type, 0, &tag_type, &tag_byte_offset, | |
52ce6436 | 5754 | NULL, NULL, NULL)) |
96d887e8 | 5755 | { |
fc1a4b47 | 5756 | const gdb_byte *valaddr1 = ((valaddr == NULL) |
10a2c479 AC |
5757 | ? NULL |
5758 | : valaddr + tag_byte_offset); | |
963a6417 | 5759 | CORE_ADDR address1 = (address == 0) ? 0 : address + tag_byte_offset; |
96d887e8 | 5760 | |
963a6417 | 5761 | return value_from_contents_and_address (tag_type, valaddr1, address1); |
96d887e8 | 5762 | } |
963a6417 PH |
5763 | return NULL; |
5764 | } | |
96d887e8 | 5765 | |
963a6417 PH |
5766 | static struct type * |
5767 | type_from_tag (struct value *tag) | |
5768 | { | |
5769 | const char *type_name = ada_tag_name (tag); | |
5770 | if (type_name != NULL) | |
5771 | return ada_find_any_type (ada_encode (type_name)); | |
5772 | return NULL; | |
5773 | } | |
96d887e8 | 5774 | |
963a6417 PH |
5775 | struct tag_args |
5776 | { | |
5777 | struct value *tag; | |
5778 | char *name; | |
5779 | }; | |
4c4b4cd2 | 5780 | |
529cad9c PH |
5781 | |
5782 | static int ada_tag_name_1 (void *); | |
5783 | static int ada_tag_name_2 (struct tag_args *); | |
5784 | ||
4c4b4cd2 PH |
5785 | /* Wrapper function used by ada_tag_name. Given a struct tag_args* |
5786 | value ARGS, sets ARGS->name to the tag name of ARGS->tag. | |
5787 | The value stored in ARGS->name is valid until the next call to | |
5788 | ada_tag_name_1. */ | |
5789 | ||
5790 | static int | |
5791 | ada_tag_name_1 (void *args0) | |
5792 | { | |
5793 | struct tag_args *args = (struct tag_args *) args0; | |
5794 | static char name[1024]; | |
76a01679 | 5795 | char *p; |
4c4b4cd2 PH |
5796 | struct value *val; |
5797 | args->name = NULL; | |
03ee6b2e | 5798 | val = ada_value_struct_elt (args->tag, "tsd", 1); |
529cad9c PH |
5799 | if (val == NULL) |
5800 | return ada_tag_name_2 (args); | |
03ee6b2e | 5801 | val = ada_value_struct_elt (val, "expanded_name", 1); |
529cad9c PH |
5802 | if (val == NULL) |
5803 | return 0; | |
5804 | read_memory_string (value_as_address (val), name, sizeof (name) - 1); | |
5805 | for (p = name; *p != '\0'; p += 1) | |
5806 | if (isalpha (*p)) | |
5807 | *p = tolower (*p); | |
5808 | args->name = name; | |
5809 | return 0; | |
5810 | } | |
5811 | ||
5812 | /* Utility function for ada_tag_name_1 that tries the second | |
5813 | representation for the dispatch table (in which there is no | |
5814 | explicit 'tsd' field in the referent of the tag pointer, and instead | |
5815 | the tsd pointer is stored just before the dispatch table. */ | |
5816 | ||
5817 | static int | |
5818 | ada_tag_name_2 (struct tag_args *args) | |
5819 | { | |
5820 | struct type *info_type; | |
5821 | static char name[1024]; | |
5822 | char *p; | |
5823 | struct value *val, *valp; | |
5824 | ||
5825 | args->name = NULL; | |
5826 | info_type = ada_find_any_type ("ada__tags__type_specific_data"); | |
5827 | if (info_type == NULL) | |
5828 | return 0; | |
5829 | info_type = lookup_pointer_type (lookup_pointer_type (info_type)); | |
5830 | valp = value_cast (info_type, args->tag); | |
5831 | if (valp == NULL) | |
5832 | return 0; | |
5833 | val = value_ind (value_add (valp, value_from_longest (builtin_type_int, -1))); | |
4c4b4cd2 PH |
5834 | if (val == NULL) |
5835 | return 0; | |
03ee6b2e | 5836 | val = ada_value_struct_elt (val, "expanded_name", 1); |
4c4b4cd2 PH |
5837 | if (val == NULL) |
5838 | return 0; | |
5839 | read_memory_string (value_as_address (val), name, sizeof (name) - 1); | |
5840 | for (p = name; *p != '\0'; p += 1) | |
5841 | if (isalpha (*p)) | |
5842 | *p = tolower (*p); | |
5843 | args->name = name; | |
5844 | return 0; | |
5845 | } | |
5846 | ||
5847 | /* The type name of the dynamic type denoted by the 'tag value TAG, as | |
5848 | * a C string. */ | |
5849 | ||
5850 | const char * | |
5851 | ada_tag_name (struct value *tag) | |
5852 | { | |
5853 | struct tag_args args; | |
df407dfe | 5854 | if (!ada_is_tag_type (value_type (tag))) |
4c4b4cd2 | 5855 | return NULL; |
76a01679 | 5856 | args.tag = tag; |
4c4b4cd2 PH |
5857 | args.name = NULL; |
5858 | catch_errors (ada_tag_name_1, &args, NULL, RETURN_MASK_ALL); | |
5859 | return args.name; | |
5860 | } | |
5861 | ||
5862 | /* The parent type of TYPE, or NULL if none. */ | |
14f9c5c9 | 5863 | |
d2e4a39e | 5864 | struct type * |
ebf56fd3 | 5865 | ada_parent_type (struct type *type) |
14f9c5c9 AS |
5866 | { |
5867 | int i; | |
5868 | ||
61ee279c | 5869 | type = ada_check_typedef (type); |
14f9c5c9 AS |
5870 | |
5871 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT) | |
5872 | return NULL; | |
5873 | ||
5874 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
5875 | if (ada_is_parent_field (type, i)) | |
61ee279c | 5876 | return ada_check_typedef (TYPE_FIELD_TYPE (type, i)); |
14f9c5c9 AS |
5877 | |
5878 | return NULL; | |
5879 | } | |
5880 | ||
4c4b4cd2 PH |
5881 | /* True iff field number FIELD_NUM of structure type TYPE contains the |
5882 | parent-type (inherited) fields of a derived type. Assumes TYPE is | |
5883 | a structure type with at least FIELD_NUM+1 fields. */ | |
14f9c5c9 AS |
5884 | |
5885 | int | |
ebf56fd3 | 5886 | ada_is_parent_field (struct type *type, int field_num) |
14f9c5c9 | 5887 | { |
61ee279c | 5888 | const char *name = TYPE_FIELD_NAME (ada_check_typedef (type), field_num); |
4c4b4cd2 PH |
5889 | return (name != NULL |
5890 | && (strncmp (name, "PARENT", 6) == 0 | |
5891 | || strncmp (name, "_parent", 7) == 0)); | |
14f9c5c9 AS |
5892 | } |
5893 | ||
4c4b4cd2 | 5894 | /* True iff field number FIELD_NUM of structure type TYPE is a |
14f9c5c9 | 5895 | transparent wrapper field (which should be silently traversed when doing |
4c4b4cd2 | 5896 | field selection and flattened when printing). Assumes TYPE is a |
14f9c5c9 | 5897 | structure type with at least FIELD_NUM+1 fields. Such fields are always |
4c4b4cd2 | 5898 | structures. */ |
14f9c5c9 AS |
5899 | |
5900 | int | |
ebf56fd3 | 5901 | ada_is_wrapper_field (struct type *type, int field_num) |
14f9c5c9 | 5902 | { |
d2e4a39e AS |
5903 | const char *name = TYPE_FIELD_NAME (type, field_num); |
5904 | return (name != NULL | |
4c4b4cd2 PH |
5905 | && (strncmp (name, "PARENT", 6) == 0 |
5906 | || strcmp (name, "REP") == 0 | |
5907 | || strncmp (name, "_parent", 7) == 0 | |
5908 | || name[0] == 'S' || name[0] == 'R' || name[0] == 'O')); | |
14f9c5c9 AS |
5909 | } |
5910 | ||
4c4b4cd2 PH |
5911 | /* True iff field number FIELD_NUM of structure or union type TYPE |
5912 | is a variant wrapper. Assumes TYPE is a structure type with at least | |
5913 | FIELD_NUM+1 fields. */ | |
14f9c5c9 AS |
5914 | |
5915 | int | |
ebf56fd3 | 5916 | ada_is_variant_part (struct type *type, int field_num) |
14f9c5c9 | 5917 | { |
d2e4a39e | 5918 | struct type *field_type = TYPE_FIELD_TYPE (type, field_num); |
14f9c5c9 | 5919 | return (TYPE_CODE (field_type) == TYPE_CODE_UNION |
4c4b4cd2 | 5920 | || (is_dynamic_field (type, field_num) |
c3e5cd34 PH |
5921 | && (TYPE_CODE (TYPE_TARGET_TYPE (field_type)) |
5922 | == TYPE_CODE_UNION))); | |
14f9c5c9 AS |
5923 | } |
5924 | ||
5925 | /* Assuming that VAR_TYPE is a variant wrapper (type of the variant part) | |
4c4b4cd2 | 5926 | whose discriminants are contained in the record type OUTER_TYPE, |
14f9c5c9 AS |
5927 | returns the type of the controlling discriminant for the variant. */ |
5928 | ||
d2e4a39e | 5929 | struct type * |
ebf56fd3 | 5930 | ada_variant_discrim_type (struct type *var_type, struct type *outer_type) |
14f9c5c9 | 5931 | { |
d2e4a39e | 5932 | char *name = ada_variant_discrim_name (var_type); |
76a01679 | 5933 | struct type *type = |
4c4b4cd2 | 5934 | ada_lookup_struct_elt_type (outer_type, name, 1, 1, NULL); |
14f9c5c9 AS |
5935 | if (type == NULL) |
5936 | return builtin_type_int; | |
5937 | else | |
5938 | return type; | |
5939 | } | |
5940 | ||
4c4b4cd2 | 5941 | /* Assuming that TYPE is the type of a variant wrapper, and FIELD_NUM is a |
14f9c5c9 | 5942 | valid field number within it, returns 1 iff field FIELD_NUM of TYPE |
4c4b4cd2 | 5943 | represents a 'when others' clause; otherwise 0. */ |
14f9c5c9 AS |
5944 | |
5945 | int | |
ebf56fd3 | 5946 | ada_is_others_clause (struct type *type, int field_num) |
14f9c5c9 | 5947 | { |
d2e4a39e | 5948 | const char *name = TYPE_FIELD_NAME (type, field_num); |
14f9c5c9 AS |
5949 | return (name != NULL && name[0] == 'O'); |
5950 | } | |
5951 | ||
5952 | /* Assuming that TYPE0 is the type of the variant part of a record, | |
4c4b4cd2 PH |
5953 | returns the name of the discriminant controlling the variant. |
5954 | The value is valid until the next call to ada_variant_discrim_name. */ | |
14f9c5c9 | 5955 | |
d2e4a39e | 5956 | char * |
ebf56fd3 | 5957 | ada_variant_discrim_name (struct type *type0) |
14f9c5c9 | 5958 | { |
d2e4a39e | 5959 | static char *result = NULL; |
14f9c5c9 | 5960 | static size_t result_len = 0; |
d2e4a39e AS |
5961 | struct type *type; |
5962 | const char *name; | |
5963 | const char *discrim_end; | |
5964 | const char *discrim_start; | |
14f9c5c9 AS |
5965 | |
5966 | if (TYPE_CODE (type0) == TYPE_CODE_PTR) | |
5967 | type = TYPE_TARGET_TYPE (type0); | |
5968 | else | |
5969 | type = type0; | |
5970 | ||
5971 | name = ada_type_name (type); | |
5972 | ||
5973 | if (name == NULL || name[0] == '\000') | |
5974 | return ""; | |
5975 | ||
5976 | for (discrim_end = name + strlen (name) - 6; discrim_end != name; | |
5977 | discrim_end -= 1) | |
5978 | { | |
4c4b4cd2 PH |
5979 | if (strncmp (discrim_end, "___XVN", 6) == 0) |
5980 | break; | |
14f9c5c9 AS |
5981 | } |
5982 | if (discrim_end == name) | |
5983 | return ""; | |
5984 | ||
d2e4a39e | 5985 | for (discrim_start = discrim_end; discrim_start != name + 3; |
14f9c5c9 AS |
5986 | discrim_start -= 1) |
5987 | { | |
d2e4a39e | 5988 | if (discrim_start == name + 1) |
4c4b4cd2 | 5989 | return ""; |
76a01679 | 5990 | if ((discrim_start > name + 3 |
4c4b4cd2 PH |
5991 | && strncmp (discrim_start - 3, "___", 3) == 0) |
5992 | || discrim_start[-1] == '.') | |
5993 | break; | |
14f9c5c9 AS |
5994 | } |
5995 | ||
5996 | GROW_VECT (result, result_len, discrim_end - discrim_start + 1); | |
5997 | strncpy (result, discrim_start, discrim_end - discrim_start); | |
d2e4a39e | 5998 | result[discrim_end - discrim_start] = '\0'; |
14f9c5c9 AS |
5999 | return result; |
6000 | } | |
6001 | ||
4c4b4cd2 PH |
6002 | /* Scan STR for a subtype-encoded number, beginning at position K. |
6003 | Put the position of the character just past the number scanned in | |
6004 | *NEW_K, if NEW_K!=NULL. Put the scanned number in *R, if R!=NULL. | |
6005 | Return 1 if there was a valid number at the given position, and 0 | |
6006 | otherwise. A "subtype-encoded" number consists of the absolute value | |
6007 | in decimal, followed by the letter 'm' to indicate a negative number. | |
6008 | Assumes 0m does not occur. */ | |
14f9c5c9 AS |
6009 | |
6010 | int | |
d2e4a39e | 6011 | ada_scan_number (const char str[], int k, LONGEST * R, int *new_k) |
14f9c5c9 AS |
6012 | { |
6013 | ULONGEST RU; | |
6014 | ||
d2e4a39e | 6015 | if (!isdigit (str[k])) |
14f9c5c9 AS |
6016 | return 0; |
6017 | ||
4c4b4cd2 | 6018 | /* Do it the hard way so as not to make any assumption about |
14f9c5c9 | 6019 | the relationship of unsigned long (%lu scan format code) and |
4c4b4cd2 | 6020 | LONGEST. */ |
14f9c5c9 AS |
6021 | RU = 0; |
6022 | while (isdigit (str[k])) | |
6023 | { | |
d2e4a39e | 6024 | RU = RU * 10 + (str[k] - '0'); |
14f9c5c9 AS |
6025 | k += 1; |
6026 | } | |
6027 | ||
d2e4a39e | 6028 | if (str[k] == 'm') |
14f9c5c9 AS |
6029 | { |
6030 | if (R != NULL) | |
4c4b4cd2 | 6031 | *R = (-(LONGEST) (RU - 1)) - 1; |
14f9c5c9 AS |
6032 | k += 1; |
6033 | } | |
6034 | else if (R != NULL) | |
6035 | *R = (LONGEST) RU; | |
6036 | ||
4c4b4cd2 | 6037 | /* NOTE on the above: Technically, C does not say what the results of |
14f9c5c9 AS |
6038 | - (LONGEST) RU or (LONGEST) -RU are for RU == largest positive |
6039 | number representable as a LONGEST (although either would probably work | |
6040 | in most implementations). When RU>0, the locution in the then branch | |
4c4b4cd2 | 6041 | above is always equivalent to the negative of RU. */ |
14f9c5c9 AS |
6042 | |
6043 | if (new_k != NULL) | |
6044 | *new_k = k; | |
6045 | return 1; | |
6046 | } | |
6047 | ||
4c4b4cd2 PH |
6048 | /* Assuming that TYPE is a variant part wrapper type (a VARIANTS field), |
6049 | and FIELD_NUM is a valid field number within it, returns 1 iff VAL is | |
6050 | in the range encoded by field FIELD_NUM of TYPE; otherwise 0. */ | |
14f9c5c9 | 6051 | |
d2e4a39e | 6052 | int |
ebf56fd3 | 6053 | ada_in_variant (LONGEST val, struct type *type, int field_num) |
14f9c5c9 | 6054 | { |
d2e4a39e | 6055 | const char *name = TYPE_FIELD_NAME (type, field_num); |
14f9c5c9 AS |
6056 | int p; |
6057 | ||
6058 | p = 0; | |
6059 | while (1) | |
6060 | { | |
d2e4a39e | 6061 | switch (name[p]) |
4c4b4cd2 PH |
6062 | { |
6063 | case '\0': | |
6064 | return 0; | |
6065 | case 'S': | |
6066 | { | |
6067 | LONGEST W; | |
6068 | if (!ada_scan_number (name, p + 1, &W, &p)) | |
6069 | return 0; | |
6070 | if (val == W) | |
6071 | return 1; | |
6072 | break; | |
6073 | } | |
6074 | case 'R': | |
6075 | { | |
6076 | LONGEST L, U; | |
6077 | if (!ada_scan_number (name, p + 1, &L, &p) | |
6078 | || name[p] != 'T' || !ada_scan_number (name, p + 1, &U, &p)) | |
6079 | return 0; | |
6080 | if (val >= L && val <= U) | |
6081 | return 1; | |
6082 | break; | |
6083 | } | |
6084 | case 'O': | |
6085 | return 1; | |
6086 | default: | |
6087 | return 0; | |
6088 | } | |
6089 | } | |
6090 | } | |
6091 | ||
6092 | /* FIXME: Lots of redundancy below. Try to consolidate. */ | |
6093 | ||
6094 | /* Given a value ARG1 (offset by OFFSET bytes) of a struct or union type | |
6095 | ARG_TYPE, extract and return the value of one of its (non-static) | |
6096 | fields. FIELDNO says which field. Differs from value_primitive_field | |
6097 | only in that it can handle packed values of arbitrary type. */ | |
14f9c5c9 | 6098 | |
4c4b4cd2 | 6099 | static struct value * |
d2e4a39e | 6100 | ada_value_primitive_field (struct value *arg1, int offset, int fieldno, |
4c4b4cd2 | 6101 | struct type *arg_type) |
14f9c5c9 | 6102 | { |
14f9c5c9 AS |
6103 | struct type *type; |
6104 | ||
61ee279c | 6105 | arg_type = ada_check_typedef (arg_type); |
14f9c5c9 AS |
6106 | type = TYPE_FIELD_TYPE (arg_type, fieldno); |
6107 | ||
4c4b4cd2 | 6108 | /* Handle packed fields. */ |
14f9c5c9 AS |
6109 | |
6110 | if (TYPE_FIELD_BITSIZE (arg_type, fieldno) != 0) | |
6111 | { | |
6112 | int bit_pos = TYPE_FIELD_BITPOS (arg_type, fieldno); | |
6113 | int bit_size = TYPE_FIELD_BITSIZE (arg_type, fieldno); | |
d2e4a39e | 6114 | |
0fd88904 | 6115 | return ada_value_primitive_packed_val (arg1, value_contents (arg1), |
4c4b4cd2 PH |
6116 | offset + bit_pos / 8, |
6117 | bit_pos % 8, bit_size, type); | |
14f9c5c9 AS |
6118 | } |
6119 | else | |
6120 | return value_primitive_field (arg1, offset, fieldno, arg_type); | |
6121 | } | |
6122 | ||
52ce6436 PH |
6123 | /* Find field with name NAME in object of type TYPE. If found, |
6124 | set the following for each argument that is non-null: | |
6125 | - *FIELD_TYPE_P to the field's type; | |
6126 | - *BYTE_OFFSET_P to OFFSET + the byte offset of the field within | |
6127 | an object of that type; | |
6128 | - *BIT_OFFSET_P to the bit offset modulo byte size of the field; | |
6129 | - *BIT_SIZE_P to its size in bits if the field is packed, and | |
6130 | 0 otherwise; | |
6131 | If INDEX_P is non-null, increment *INDEX_P by the number of source-visible | |
6132 | fields up to but not including the desired field, or by the total | |
6133 | number of fields if not found. A NULL value of NAME never | |
6134 | matches; the function just counts visible fields in this case. | |
6135 | ||
6136 | Returns 1 if found, 0 otherwise. */ | |
6137 | ||
4c4b4cd2 | 6138 | static int |
76a01679 JB |
6139 | find_struct_field (char *name, struct type *type, int offset, |
6140 | struct type **field_type_p, | |
52ce6436 PH |
6141 | int *byte_offset_p, int *bit_offset_p, int *bit_size_p, |
6142 | int *index_p) | |
4c4b4cd2 PH |
6143 | { |
6144 | int i; | |
6145 | ||
61ee279c | 6146 | type = ada_check_typedef (type); |
76a01679 | 6147 | |
52ce6436 PH |
6148 | if (field_type_p != NULL) |
6149 | *field_type_p = NULL; | |
6150 | if (byte_offset_p != NULL) | |
d5d6fca5 | 6151 | *byte_offset_p = 0; |
52ce6436 PH |
6152 | if (bit_offset_p != NULL) |
6153 | *bit_offset_p = 0; | |
6154 | if (bit_size_p != NULL) | |
6155 | *bit_size_p = 0; | |
6156 | ||
6157 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
4c4b4cd2 PH |
6158 | { |
6159 | int bit_pos = TYPE_FIELD_BITPOS (type, i); | |
6160 | int fld_offset = offset + bit_pos / 8; | |
6161 | char *t_field_name = TYPE_FIELD_NAME (type, i); | |
76a01679 | 6162 | |
4c4b4cd2 PH |
6163 | if (t_field_name == NULL) |
6164 | continue; | |
6165 | ||
52ce6436 | 6166 | else if (name != NULL && field_name_match (t_field_name, name)) |
76a01679 JB |
6167 | { |
6168 | int bit_size = TYPE_FIELD_BITSIZE (type, i); | |
52ce6436 PH |
6169 | if (field_type_p != NULL) |
6170 | *field_type_p = TYPE_FIELD_TYPE (type, i); | |
6171 | if (byte_offset_p != NULL) | |
6172 | *byte_offset_p = fld_offset; | |
6173 | if (bit_offset_p != NULL) | |
6174 | *bit_offset_p = bit_pos % 8; | |
6175 | if (bit_size_p != NULL) | |
6176 | *bit_size_p = bit_size; | |
76a01679 JB |
6177 | return 1; |
6178 | } | |
4c4b4cd2 PH |
6179 | else if (ada_is_wrapper_field (type, i)) |
6180 | { | |
52ce6436 PH |
6181 | if (find_struct_field (name, TYPE_FIELD_TYPE (type, i), fld_offset, |
6182 | field_type_p, byte_offset_p, bit_offset_p, | |
6183 | bit_size_p, index_p)) | |
76a01679 JB |
6184 | return 1; |
6185 | } | |
4c4b4cd2 PH |
6186 | else if (ada_is_variant_part (type, i)) |
6187 | { | |
52ce6436 PH |
6188 | /* PNH: Wait. Do we ever execute this section, or is ARG always of |
6189 | fixed type?? */ | |
4c4b4cd2 | 6190 | int j; |
52ce6436 PH |
6191 | struct type *field_type |
6192 | = ada_check_typedef (TYPE_FIELD_TYPE (type, i)); | |
4c4b4cd2 | 6193 | |
52ce6436 | 6194 | for (j = 0; j < TYPE_NFIELDS (field_type); j += 1) |
4c4b4cd2 | 6195 | { |
76a01679 JB |
6196 | if (find_struct_field (name, TYPE_FIELD_TYPE (field_type, j), |
6197 | fld_offset | |
6198 | + TYPE_FIELD_BITPOS (field_type, j) / 8, | |
6199 | field_type_p, byte_offset_p, | |
52ce6436 | 6200 | bit_offset_p, bit_size_p, index_p)) |
76a01679 | 6201 | return 1; |
4c4b4cd2 PH |
6202 | } |
6203 | } | |
52ce6436 PH |
6204 | else if (index_p != NULL) |
6205 | *index_p += 1; | |
4c4b4cd2 PH |
6206 | } |
6207 | return 0; | |
6208 | } | |
6209 | ||
52ce6436 | 6210 | /* Number of user-visible fields in record type TYPE. */ |
4c4b4cd2 | 6211 | |
52ce6436 PH |
6212 | static int |
6213 | num_visible_fields (struct type *type) | |
6214 | { | |
6215 | int n; | |
6216 | n = 0; | |
6217 | find_struct_field (NULL, type, 0, NULL, NULL, NULL, NULL, &n); | |
6218 | return n; | |
6219 | } | |
14f9c5c9 | 6220 | |
4c4b4cd2 | 6221 | /* Look for a field NAME in ARG. Adjust the address of ARG by OFFSET bytes, |
14f9c5c9 AS |
6222 | and search in it assuming it has (class) type TYPE. |
6223 | If found, return value, else return NULL. | |
6224 | ||
4c4b4cd2 | 6225 | Searches recursively through wrapper fields (e.g., '_parent'). */ |
14f9c5c9 | 6226 | |
4c4b4cd2 | 6227 | static struct value * |
d2e4a39e | 6228 | ada_search_struct_field (char *name, struct value *arg, int offset, |
4c4b4cd2 | 6229 | struct type *type) |
14f9c5c9 AS |
6230 | { |
6231 | int i; | |
61ee279c | 6232 | type = ada_check_typedef (type); |
14f9c5c9 | 6233 | |
52ce6436 | 6234 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) |
14f9c5c9 AS |
6235 | { |
6236 | char *t_field_name = TYPE_FIELD_NAME (type, i); | |
6237 | ||
6238 | if (t_field_name == NULL) | |
4c4b4cd2 | 6239 | continue; |
14f9c5c9 AS |
6240 | |
6241 | else if (field_name_match (t_field_name, name)) | |
4c4b4cd2 | 6242 | return ada_value_primitive_field (arg, offset, i, type); |
14f9c5c9 AS |
6243 | |
6244 | else if (ada_is_wrapper_field (type, i)) | |
4c4b4cd2 | 6245 | { |
06d5cf63 JB |
6246 | struct value *v = /* Do not let indent join lines here. */ |
6247 | ada_search_struct_field (name, arg, | |
6248 | offset + TYPE_FIELD_BITPOS (type, i) / 8, | |
6249 | TYPE_FIELD_TYPE (type, i)); | |
4c4b4cd2 PH |
6250 | if (v != NULL) |
6251 | return v; | |
6252 | } | |
14f9c5c9 AS |
6253 | |
6254 | else if (ada_is_variant_part (type, i)) | |
4c4b4cd2 | 6255 | { |
52ce6436 | 6256 | /* PNH: Do we ever get here? See find_struct_field. */ |
4c4b4cd2 | 6257 | int j; |
61ee279c | 6258 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type, i)); |
4c4b4cd2 PH |
6259 | int var_offset = offset + TYPE_FIELD_BITPOS (type, i) / 8; |
6260 | ||
52ce6436 | 6261 | for (j = 0; j < TYPE_NFIELDS (field_type); j += 1) |
4c4b4cd2 | 6262 | { |
06d5cf63 JB |
6263 | struct value *v = ada_search_struct_field /* Force line break. */ |
6264 | (name, arg, | |
6265 | var_offset + TYPE_FIELD_BITPOS (field_type, j) / 8, | |
6266 | TYPE_FIELD_TYPE (field_type, j)); | |
4c4b4cd2 PH |
6267 | if (v != NULL) |
6268 | return v; | |
6269 | } | |
6270 | } | |
14f9c5c9 AS |
6271 | } |
6272 | return NULL; | |
6273 | } | |
d2e4a39e | 6274 | |
52ce6436 PH |
6275 | static struct value *ada_index_struct_field_1 (int *, struct value *, |
6276 | int, struct type *); | |
6277 | ||
6278 | ||
6279 | /* Return field #INDEX in ARG, where the index is that returned by | |
6280 | * find_struct_field through its INDEX_P argument. Adjust the address | |
6281 | * of ARG by OFFSET bytes, and search in it assuming it has (class) type TYPE. | |
6282 | * If found, return value, else return NULL. */ | |
6283 | ||
6284 | static struct value * | |
6285 | ada_index_struct_field (int index, struct value *arg, int offset, | |
6286 | struct type *type) | |
6287 | { | |
6288 | return ada_index_struct_field_1 (&index, arg, offset, type); | |
6289 | } | |
6290 | ||
6291 | ||
6292 | /* Auxiliary function for ada_index_struct_field. Like | |
6293 | * ada_index_struct_field, but takes index from *INDEX_P and modifies | |
6294 | * *INDEX_P. */ | |
6295 | ||
6296 | static struct value * | |
6297 | ada_index_struct_field_1 (int *index_p, struct value *arg, int offset, | |
6298 | struct type *type) | |
6299 | { | |
6300 | int i; | |
6301 | type = ada_check_typedef (type); | |
6302 | ||
6303 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
6304 | { | |
6305 | if (TYPE_FIELD_NAME (type, i) == NULL) | |
6306 | continue; | |
6307 | else if (ada_is_wrapper_field (type, i)) | |
6308 | { | |
6309 | struct value *v = /* Do not let indent join lines here. */ | |
6310 | ada_index_struct_field_1 (index_p, arg, | |
6311 | offset + TYPE_FIELD_BITPOS (type, i) / 8, | |
6312 | TYPE_FIELD_TYPE (type, i)); | |
6313 | if (v != NULL) | |
6314 | return v; | |
6315 | } | |
6316 | ||
6317 | else if (ada_is_variant_part (type, i)) | |
6318 | { | |
6319 | /* PNH: Do we ever get here? See ada_search_struct_field, | |
6320 | find_struct_field. */ | |
6321 | error (_("Cannot assign this kind of variant record")); | |
6322 | } | |
6323 | else if (*index_p == 0) | |
6324 | return ada_value_primitive_field (arg, offset, i, type); | |
6325 | else | |
6326 | *index_p -= 1; | |
6327 | } | |
6328 | return NULL; | |
6329 | } | |
6330 | ||
4c4b4cd2 PH |
6331 | /* Given ARG, a value of type (pointer or reference to a)* |
6332 | structure/union, extract the component named NAME from the ultimate | |
6333 | target structure/union and return it as a value with its | |
6334 | appropriate type. If ARG is a pointer or reference and the field | |
6335 | is not packed, returns a reference to the field, otherwise the | |
6336 | value of the field (an lvalue if ARG is an lvalue). | |
14f9c5c9 | 6337 | |
4c4b4cd2 PH |
6338 | The routine searches for NAME among all members of the structure itself |
6339 | and (recursively) among all members of any wrapper members | |
14f9c5c9 AS |
6340 | (e.g., '_parent'). |
6341 | ||
03ee6b2e PH |
6342 | If NO_ERR, then simply return NULL in case of error, rather than |
6343 | calling error. */ | |
14f9c5c9 | 6344 | |
d2e4a39e | 6345 | struct value * |
03ee6b2e | 6346 | ada_value_struct_elt (struct value *arg, char *name, int no_err) |
14f9c5c9 | 6347 | { |
4c4b4cd2 | 6348 | struct type *t, *t1; |
d2e4a39e | 6349 | struct value *v; |
14f9c5c9 | 6350 | |
4c4b4cd2 | 6351 | v = NULL; |
df407dfe | 6352 | t1 = t = ada_check_typedef (value_type (arg)); |
4c4b4cd2 PH |
6353 | if (TYPE_CODE (t) == TYPE_CODE_REF) |
6354 | { | |
6355 | t1 = TYPE_TARGET_TYPE (t); | |
6356 | if (t1 == NULL) | |
03ee6b2e | 6357 | goto BadValue; |
61ee279c | 6358 | t1 = ada_check_typedef (t1); |
4c4b4cd2 | 6359 | if (TYPE_CODE (t1) == TYPE_CODE_PTR) |
76a01679 | 6360 | { |
994b9211 | 6361 | arg = coerce_ref (arg); |
76a01679 JB |
6362 | t = t1; |
6363 | } | |
4c4b4cd2 | 6364 | } |
14f9c5c9 | 6365 | |
4c4b4cd2 PH |
6366 | while (TYPE_CODE (t) == TYPE_CODE_PTR) |
6367 | { | |
6368 | t1 = TYPE_TARGET_TYPE (t); | |
6369 | if (t1 == NULL) | |
03ee6b2e | 6370 | goto BadValue; |
61ee279c | 6371 | t1 = ada_check_typedef (t1); |
4c4b4cd2 | 6372 | if (TYPE_CODE (t1) == TYPE_CODE_PTR) |
76a01679 JB |
6373 | { |
6374 | arg = value_ind (arg); | |
6375 | t = t1; | |
6376 | } | |
4c4b4cd2 | 6377 | else |
76a01679 | 6378 | break; |
4c4b4cd2 | 6379 | } |
14f9c5c9 | 6380 | |
4c4b4cd2 | 6381 | if (TYPE_CODE (t1) != TYPE_CODE_STRUCT && TYPE_CODE (t1) != TYPE_CODE_UNION) |
03ee6b2e | 6382 | goto BadValue; |
14f9c5c9 | 6383 | |
4c4b4cd2 PH |
6384 | if (t1 == t) |
6385 | v = ada_search_struct_field (name, arg, 0, t); | |
6386 | else | |
6387 | { | |
6388 | int bit_offset, bit_size, byte_offset; | |
6389 | struct type *field_type; | |
6390 | CORE_ADDR address; | |
6391 | ||
76a01679 JB |
6392 | if (TYPE_CODE (t) == TYPE_CODE_PTR) |
6393 | address = value_as_address (arg); | |
4c4b4cd2 | 6394 | else |
0fd88904 | 6395 | address = unpack_pointer (t, value_contents (arg)); |
14f9c5c9 | 6396 | |
1ed6ede0 | 6397 | t1 = ada_to_fixed_type (ada_get_base_type (t1), NULL, address, NULL, 1); |
76a01679 JB |
6398 | if (find_struct_field (name, t1, 0, |
6399 | &field_type, &byte_offset, &bit_offset, | |
52ce6436 | 6400 | &bit_size, NULL)) |
76a01679 JB |
6401 | { |
6402 | if (bit_size != 0) | |
6403 | { | |
714e53ab PH |
6404 | if (TYPE_CODE (t) == TYPE_CODE_REF) |
6405 | arg = ada_coerce_ref (arg); | |
6406 | else | |
6407 | arg = ada_value_ind (arg); | |
76a01679 JB |
6408 | v = ada_value_primitive_packed_val (arg, NULL, byte_offset, |
6409 | bit_offset, bit_size, | |
6410 | field_type); | |
6411 | } | |
6412 | else | |
6413 | v = value_from_pointer (lookup_reference_type (field_type), | |
6414 | address + byte_offset); | |
6415 | } | |
6416 | } | |
6417 | ||
03ee6b2e PH |
6418 | if (v != NULL || no_err) |
6419 | return v; | |
6420 | else | |
323e0a4a | 6421 | error (_("There is no member named %s."), name); |
14f9c5c9 | 6422 | |
03ee6b2e PH |
6423 | BadValue: |
6424 | if (no_err) | |
6425 | return NULL; | |
6426 | else | |
6427 | error (_("Attempt to extract a component of a value that is not a record.")); | |
14f9c5c9 AS |
6428 | } |
6429 | ||
6430 | /* Given a type TYPE, look up the type of the component of type named NAME. | |
4c4b4cd2 PH |
6431 | If DISPP is non-null, add its byte displacement from the beginning of a |
6432 | structure (pointed to by a value) of type TYPE to *DISPP (does not | |
14f9c5c9 AS |
6433 | work for packed fields). |
6434 | ||
6435 | Matches any field whose name has NAME as a prefix, possibly | |
4c4b4cd2 | 6436 | followed by "___". |
14f9c5c9 | 6437 | |
4c4b4cd2 PH |
6438 | TYPE can be either a struct or union. If REFOK, TYPE may also |
6439 | be a (pointer or reference)+ to a struct or union, and the | |
6440 | ultimate target type will be searched. | |
14f9c5c9 AS |
6441 | |
6442 | Looks recursively into variant clauses and parent types. | |
6443 | ||
4c4b4cd2 PH |
6444 | If NOERR is nonzero, return NULL if NAME is not suitably defined or |
6445 | TYPE is not a type of the right kind. */ | |
14f9c5c9 | 6446 | |
4c4b4cd2 | 6447 | static struct type * |
76a01679 JB |
6448 | ada_lookup_struct_elt_type (struct type *type, char *name, int refok, |
6449 | int noerr, int *dispp) | |
14f9c5c9 AS |
6450 | { |
6451 | int i; | |
6452 | ||
6453 | if (name == NULL) | |
6454 | goto BadName; | |
6455 | ||
76a01679 | 6456 | if (refok && type != NULL) |
4c4b4cd2 PH |
6457 | while (1) |
6458 | { | |
61ee279c | 6459 | type = ada_check_typedef (type); |
76a01679 JB |
6460 | if (TYPE_CODE (type) != TYPE_CODE_PTR |
6461 | && TYPE_CODE (type) != TYPE_CODE_REF) | |
6462 | break; | |
6463 | type = TYPE_TARGET_TYPE (type); | |
4c4b4cd2 | 6464 | } |
14f9c5c9 | 6465 | |
76a01679 | 6466 | if (type == NULL |
1265e4aa JB |
6467 | || (TYPE_CODE (type) != TYPE_CODE_STRUCT |
6468 | && TYPE_CODE (type) != TYPE_CODE_UNION)) | |
14f9c5c9 | 6469 | { |
4c4b4cd2 | 6470 | if (noerr) |
76a01679 | 6471 | return NULL; |
4c4b4cd2 | 6472 | else |
76a01679 JB |
6473 | { |
6474 | target_terminal_ours (); | |
6475 | gdb_flush (gdb_stdout); | |
323e0a4a AC |
6476 | if (type == NULL) |
6477 | error (_("Type (null) is not a structure or union type")); | |
6478 | else | |
6479 | { | |
6480 | /* XXX: type_sprint */ | |
6481 | fprintf_unfiltered (gdb_stderr, _("Type ")); | |
6482 | type_print (type, "", gdb_stderr, -1); | |
6483 | error (_(" is not a structure or union type")); | |
6484 | } | |
76a01679 | 6485 | } |
14f9c5c9 AS |
6486 | } |
6487 | ||
6488 | type = to_static_fixed_type (type); | |
6489 | ||
6490 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
6491 | { | |
6492 | char *t_field_name = TYPE_FIELD_NAME (type, i); | |
6493 | struct type *t; | |
6494 | int disp; | |
d2e4a39e | 6495 | |
14f9c5c9 | 6496 | if (t_field_name == NULL) |
4c4b4cd2 | 6497 | continue; |
14f9c5c9 AS |
6498 | |
6499 | else if (field_name_match (t_field_name, name)) | |
4c4b4cd2 PH |
6500 | { |
6501 | if (dispp != NULL) | |
6502 | *dispp += TYPE_FIELD_BITPOS (type, i) / 8; | |
61ee279c | 6503 | return ada_check_typedef (TYPE_FIELD_TYPE (type, i)); |
4c4b4cd2 | 6504 | } |
14f9c5c9 AS |
6505 | |
6506 | else if (ada_is_wrapper_field (type, i)) | |
4c4b4cd2 PH |
6507 | { |
6508 | disp = 0; | |
6509 | t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, | |
6510 | 0, 1, &disp); | |
6511 | if (t != NULL) | |
6512 | { | |
6513 | if (dispp != NULL) | |
6514 | *dispp += disp + TYPE_FIELD_BITPOS (type, i) / 8; | |
6515 | return t; | |
6516 | } | |
6517 | } | |
14f9c5c9 AS |
6518 | |
6519 | else if (ada_is_variant_part (type, i)) | |
4c4b4cd2 PH |
6520 | { |
6521 | int j; | |
61ee279c | 6522 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type, i)); |
4c4b4cd2 PH |
6523 | |
6524 | for (j = TYPE_NFIELDS (field_type) - 1; j >= 0; j -= 1) | |
6525 | { | |
6526 | disp = 0; | |
6527 | t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (field_type, j), | |
6528 | name, 0, 1, &disp); | |
6529 | if (t != NULL) | |
6530 | { | |
6531 | if (dispp != NULL) | |
6532 | *dispp += disp + TYPE_FIELD_BITPOS (type, i) / 8; | |
6533 | return t; | |
6534 | } | |
6535 | } | |
6536 | } | |
14f9c5c9 AS |
6537 | |
6538 | } | |
6539 | ||
6540 | BadName: | |
d2e4a39e | 6541 | if (!noerr) |
14f9c5c9 AS |
6542 | { |
6543 | target_terminal_ours (); | |
6544 | gdb_flush (gdb_stdout); | |
323e0a4a AC |
6545 | if (name == NULL) |
6546 | { | |
6547 | /* XXX: type_sprint */ | |
6548 | fprintf_unfiltered (gdb_stderr, _("Type ")); | |
6549 | type_print (type, "", gdb_stderr, -1); | |
6550 | error (_(" has no component named <null>")); | |
6551 | } | |
6552 | else | |
6553 | { | |
6554 | /* XXX: type_sprint */ | |
6555 | fprintf_unfiltered (gdb_stderr, _("Type ")); | |
6556 | type_print (type, "", gdb_stderr, -1); | |
6557 | error (_(" has no component named %s"), name); | |
6558 | } | |
14f9c5c9 AS |
6559 | } |
6560 | ||
6561 | return NULL; | |
6562 | } | |
6563 | ||
6564 | /* Assuming that VAR_TYPE is the type of a variant part of a record (a union), | |
6565 | within a value of type OUTER_TYPE that is stored in GDB at | |
4c4b4cd2 PH |
6566 | OUTER_VALADDR, determine which variant clause (field number in VAR_TYPE, |
6567 | numbering from 0) is applicable. Returns -1 if none are. */ | |
14f9c5c9 | 6568 | |
d2e4a39e | 6569 | int |
ebf56fd3 | 6570 | ada_which_variant_applies (struct type *var_type, struct type *outer_type, |
fc1a4b47 | 6571 | const gdb_byte *outer_valaddr) |
14f9c5c9 AS |
6572 | { |
6573 | int others_clause; | |
6574 | int i; | |
d2e4a39e | 6575 | char *discrim_name = ada_variant_discrim_name (var_type); |
0c281816 JB |
6576 | struct value *outer; |
6577 | struct value *discrim; | |
14f9c5c9 AS |
6578 | LONGEST discrim_val; |
6579 | ||
0c281816 JB |
6580 | outer = value_from_contents_and_address (outer_type, outer_valaddr, 0); |
6581 | discrim = ada_value_struct_elt (outer, discrim_name, 1); | |
6582 | if (discrim == NULL) | |
14f9c5c9 | 6583 | return -1; |
0c281816 | 6584 | discrim_val = value_as_long (discrim); |
14f9c5c9 AS |
6585 | |
6586 | others_clause = -1; | |
6587 | for (i = 0; i < TYPE_NFIELDS (var_type); i += 1) | |
6588 | { | |
6589 | if (ada_is_others_clause (var_type, i)) | |
4c4b4cd2 | 6590 | others_clause = i; |
14f9c5c9 | 6591 | else if (ada_in_variant (discrim_val, var_type, i)) |
4c4b4cd2 | 6592 | return i; |
14f9c5c9 AS |
6593 | } |
6594 | ||
6595 | return others_clause; | |
6596 | } | |
d2e4a39e | 6597 | \f |
14f9c5c9 AS |
6598 | |
6599 | ||
4c4b4cd2 | 6600 | /* Dynamic-Sized Records */ |
14f9c5c9 AS |
6601 | |
6602 | /* Strategy: The type ostensibly attached to a value with dynamic size | |
6603 | (i.e., a size that is not statically recorded in the debugging | |
6604 | data) does not accurately reflect the size or layout of the value. | |
6605 | Our strategy is to convert these values to values with accurate, | |
4c4b4cd2 | 6606 | conventional types that are constructed on the fly. */ |
14f9c5c9 AS |
6607 | |
6608 | /* There is a subtle and tricky problem here. In general, we cannot | |
6609 | determine the size of dynamic records without its data. However, | |
6610 | the 'struct value' data structure, which GDB uses to represent | |
6611 | quantities in the inferior process (the target), requires the size | |
6612 | of the type at the time of its allocation in order to reserve space | |
6613 | for GDB's internal copy of the data. That's why the | |
6614 | 'to_fixed_xxx_type' routines take (target) addresses as parameters, | |
4c4b4cd2 | 6615 | rather than struct value*s. |
14f9c5c9 AS |
6616 | |
6617 | However, GDB's internal history variables ($1, $2, etc.) are | |
6618 | struct value*s containing internal copies of the data that are not, in | |
6619 | general, the same as the data at their corresponding addresses in | |
6620 | the target. Fortunately, the types we give to these values are all | |
6621 | conventional, fixed-size types (as per the strategy described | |
6622 | above), so that we don't usually have to perform the | |
6623 | 'to_fixed_xxx_type' conversions to look at their values. | |
6624 | Unfortunately, there is one exception: if one of the internal | |
6625 | history variables is an array whose elements are unconstrained | |
6626 | records, then we will need to create distinct fixed types for each | |
6627 | element selected. */ | |
6628 | ||
6629 | /* The upshot of all of this is that many routines take a (type, host | |
6630 | address, target address) triple as arguments to represent a value. | |
6631 | The host address, if non-null, is supposed to contain an internal | |
6632 | copy of the relevant data; otherwise, the program is to consult the | |
4c4b4cd2 | 6633 | target at the target address. */ |
14f9c5c9 AS |
6634 | |
6635 | /* Assuming that VAL0 represents a pointer value, the result of | |
6636 | dereferencing it. Differs from value_ind in its treatment of | |
4c4b4cd2 | 6637 | dynamic-sized types. */ |
14f9c5c9 | 6638 | |
d2e4a39e AS |
6639 | struct value * |
6640 | ada_value_ind (struct value *val0) | |
14f9c5c9 | 6641 | { |
d2e4a39e | 6642 | struct value *val = unwrap_value (value_ind (val0)); |
4c4b4cd2 | 6643 | return ada_to_fixed_value (val); |
14f9c5c9 AS |
6644 | } |
6645 | ||
6646 | /* The value resulting from dereferencing any "reference to" | |
4c4b4cd2 PH |
6647 | qualifiers on VAL0. */ |
6648 | ||
d2e4a39e AS |
6649 | static struct value * |
6650 | ada_coerce_ref (struct value *val0) | |
6651 | { | |
df407dfe | 6652 | if (TYPE_CODE (value_type (val0)) == TYPE_CODE_REF) |
d2e4a39e AS |
6653 | { |
6654 | struct value *val = val0; | |
994b9211 | 6655 | val = coerce_ref (val); |
d2e4a39e | 6656 | val = unwrap_value (val); |
4c4b4cd2 | 6657 | return ada_to_fixed_value (val); |
d2e4a39e AS |
6658 | } |
6659 | else | |
14f9c5c9 AS |
6660 | return val0; |
6661 | } | |
6662 | ||
6663 | /* Return OFF rounded upward if necessary to a multiple of | |
4c4b4cd2 | 6664 | ALIGNMENT (a power of 2). */ |
14f9c5c9 AS |
6665 | |
6666 | static unsigned int | |
ebf56fd3 | 6667 | align_value (unsigned int off, unsigned int alignment) |
14f9c5c9 AS |
6668 | { |
6669 | return (off + alignment - 1) & ~(alignment - 1); | |
6670 | } | |
6671 | ||
4c4b4cd2 | 6672 | /* Return the bit alignment required for field #F of template type TYPE. */ |
14f9c5c9 AS |
6673 | |
6674 | static unsigned int | |
ebf56fd3 | 6675 | field_alignment (struct type *type, int f) |
14f9c5c9 | 6676 | { |
d2e4a39e | 6677 | const char *name = TYPE_FIELD_NAME (type, f); |
64a1bf19 | 6678 | int len; |
14f9c5c9 AS |
6679 | int align_offset; |
6680 | ||
64a1bf19 JB |
6681 | /* The field name should never be null, unless the debugging information |
6682 | is somehow malformed. In this case, we assume the field does not | |
6683 | require any alignment. */ | |
6684 | if (name == NULL) | |
6685 | return 1; | |
6686 | ||
6687 | len = strlen (name); | |
6688 | ||
4c4b4cd2 PH |
6689 | if (!isdigit (name[len - 1])) |
6690 | return 1; | |
14f9c5c9 | 6691 | |
d2e4a39e | 6692 | if (isdigit (name[len - 2])) |
14f9c5c9 AS |
6693 | align_offset = len - 2; |
6694 | else | |
6695 | align_offset = len - 1; | |
6696 | ||
4c4b4cd2 | 6697 | if (align_offset < 7 || strncmp ("___XV", name + align_offset - 6, 5) != 0) |
14f9c5c9 AS |
6698 | return TARGET_CHAR_BIT; |
6699 | ||
4c4b4cd2 PH |
6700 | return atoi (name + align_offset) * TARGET_CHAR_BIT; |
6701 | } | |
6702 | ||
6703 | /* Find a symbol named NAME. Ignores ambiguity. */ | |
6704 | ||
6705 | struct symbol * | |
6706 | ada_find_any_symbol (const char *name) | |
6707 | { | |
6708 | struct symbol *sym; | |
6709 | ||
6710 | sym = standard_lookup (name, get_selected_block (NULL), VAR_DOMAIN); | |
6711 | if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
6712 | return sym; | |
6713 | ||
6714 | sym = standard_lookup (name, NULL, STRUCT_DOMAIN); | |
6715 | return sym; | |
14f9c5c9 AS |
6716 | } |
6717 | ||
6718 | /* Find a type named NAME. Ignores ambiguity. */ | |
4c4b4cd2 | 6719 | |
d2e4a39e | 6720 | struct type * |
ebf56fd3 | 6721 | ada_find_any_type (const char *name) |
14f9c5c9 | 6722 | { |
4c4b4cd2 | 6723 | struct symbol *sym = ada_find_any_symbol (name); |
14f9c5c9 | 6724 | |
14f9c5c9 AS |
6725 | if (sym != NULL) |
6726 | return SYMBOL_TYPE (sym); | |
6727 | ||
6728 | return NULL; | |
6729 | } | |
6730 | ||
aeb5907d JB |
6731 | /* Given NAME and an associated BLOCK, search all symbols for |
6732 | NAME suffixed with "___XR", which is the ``renaming'' symbol | |
4c4b4cd2 PH |
6733 | associated to NAME. Return this symbol if found, return |
6734 | NULL otherwise. */ | |
6735 | ||
6736 | struct symbol * | |
6737 | ada_find_renaming_symbol (const char *name, struct block *block) | |
aeb5907d JB |
6738 | { |
6739 | struct symbol *sym; | |
6740 | ||
6741 | sym = find_old_style_renaming_symbol (name, block); | |
6742 | ||
6743 | if (sym != NULL) | |
6744 | return sym; | |
6745 | ||
6746 | /* Not right yet. FIXME pnh 7/20/2007. */ | |
6747 | sym = ada_find_any_symbol (name); | |
6748 | if (sym != NULL && strstr (SYMBOL_LINKAGE_NAME (sym), "___XR") != NULL) | |
6749 | return sym; | |
6750 | else | |
6751 | return NULL; | |
6752 | } | |
6753 | ||
6754 | static struct symbol * | |
6755 | find_old_style_renaming_symbol (const char *name, struct block *block) | |
4c4b4cd2 PH |
6756 | { |
6757 | const struct symbol *function_sym = block_function (block); | |
6758 | char *rename; | |
6759 | ||
6760 | if (function_sym != NULL) | |
6761 | { | |
6762 | /* If the symbol is defined inside a function, NAME is not fully | |
6763 | qualified. This means we need to prepend the function name | |
6764 | as well as adding the ``___XR'' suffix to build the name of | |
6765 | the associated renaming symbol. */ | |
6766 | char *function_name = SYMBOL_LINKAGE_NAME (function_sym); | |
529cad9c PH |
6767 | /* Function names sometimes contain suffixes used |
6768 | for instance to qualify nested subprograms. When building | |
6769 | the XR type name, we need to make sure that this suffix is | |
6770 | not included. So do not include any suffix in the function | |
6771 | name length below. */ | |
6772 | const int function_name_len = ada_name_prefix_len (function_name); | |
76a01679 JB |
6773 | const int rename_len = function_name_len + 2 /* "__" */ |
6774 | + strlen (name) + 6 /* "___XR\0" */ ; | |
4c4b4cd2 | 6775 | |
529cad9c PH |
6776 | /* Strip the suffix if necessary. */ |
6777 | function_name[function_name_len] = '\0'; | |
6778 | ||
4c4b4cd2 PH |
6779 | /* Library-level functions are a special case, as GNAT adds |
6780 | a ``_ada_'' prefix to the function name to avoid namespace | |
aeb5907d | 6781 | pollution. However, the renaming symbols themselves do not |
4c4b4cd2 PH |
6782 | have this prefix, so we need to skip this prefix if present. */ |
6783 | if (function_name_len > 5 /* "_ada_" */ | |
6784 | && strstr (function_name, "_ada_") == function_name) | |
6785 | function_name = function_name + 5; | |
6786 | ||
6787 | rename = (char *) alloca (rename_len * sizeof (char)); | |
6788 | sprintf (rename, "%s__%s___XR", function_name, name); | |
6789 | } | |
6790 | else | |
6791 | { | |
6792 | const int rename_len = strlen (name) + 6; | |
6793 | rename = (char *) alloca (rename_len * sizeof (char)); | |
6794 | sprintf (rename, "%s___XR", name); | |
6795 | } | |
6796 | ||
6797 | return ada_find_any_symbol (rename); | |
6798 | } | |
6799 | ||
14f9c5c9 | 6800 | /* Because of GNAT encoding conventions, several GDB symbols may match a |
4c4b4cd2 | 6801 | given type name. If the type denoted by TYPE0 is to be preferred to |
14f9c5c9 | 6802 | that of TYPE1 for purposes of type printing, return non-zero; |
4c4b4cd2 PH |
6803 | otherwise return 0. */ |
6804 | ||
14f9c5c9 | 6805 | int |
d2e4a39e | 6806 | ada_prefer_type (struct type *type0, struct type *type1) |
14f9c5c9 AS |
6807 | { |
6808 | if (type1 == NULL) | |
6809 | return 1; | |
6810 | else if (type0 == NULL) | |
6811 | return 0; | |
6812 | else if (TYPE_CODE (type1) == TYPE_CODE_VOID) | |
6813 | return 1; | |
6814 | else if (TYPE_CODE (type0) == TYPE_CODE_VOID) | |
6815 | return 0; | |
4c4b4cd2 PH |
6816 | else if (TYPE_NAME (type1) == NULL && TYPE_NAME (type0) != NULL) |
6817 | return 1; | |
14f9c5c9 AS |
6818 | else if (ada_is_packed_array_type (type0)) |
6819 | return 1; | |
4c4b4cd2 PH |
6820 | else if (ada_is_array_descriptor_type (type0) |
6821 | && !ada_is_array_descriptor_type (type1)) | |
14f9c5c9 | 6822 | return 1; |
aeb5907d JB |
6823 | else |
6824 | { | |
6825 | const char *type0_name = type_name_no_tag (type0); | |
6826 | const char *type1_name = type_name_no_tag (type1); | |
6827 | ||
6828 | if (type0_name != NULL && strstr (type0_name, "___XR") != NULL | |
6829 | && (type1_name == NULL || strstr (type1_name, "___XR") == NULL)) | |
6830 | return 1; | |
6831 | } | |
14f9c5c9 AS |
6832 | return 0; |
6833 | } | |
6834 | ||
6835 | /* The name of TYPE, which is either its TYPE_NAME, or, if that is | |
4c4b4cd2 PH |
6836 | null, its TYPE_TAG_NAME. Null if TYPE is null. */ |
6837 | ||
d2e4a39e AS |
6838 | char * |
6839 | ada_type_name (struct type *type) | |
14f9c5c9 | 6840 | { |
d2e4a39e | 6841 | if (type == NULL) |
14f9c5c9 AS |
6842 | return NULL; |
6843 | else if (TYPE_NAME (type) != NULL) | |
6844 | return TYPE_NAME (type); | |
6845 | else | |
6846 | return TYPE_TAG_NAME (type); | |
6847 | } | |
6848 | ||
6849 | /* Find a parallel type to TYPE whose name is formed by appending | |
4c4b4cd2 | 6850 | SUFFIX to the name of TYPE. */ |
14f9c5c9 | 6851 | |
d2e4a39e | 6852 | struct type * |
ebf56fd3 | 6853 | ada_find_parallel_type (struct type *type, const char *suffix) |
14f9c5c9 | 6854 | { |
d2e4a39e | 6855 | static char *name; |
14f9c5c9 | 6856 | static size_t name_len = 0; |
14f9c5c9 | 6857 | int len; |
d2e4a39e AS |
6858 | char *typename = ada_type_name (type); |
6859 | ||
14f9c5c9 AS |
6860 | if (typename == NULL) |
6861 | return NULL; | |
6862 | ||
6863 | len = strlen (typename); | |
6864 | ||
d2e4a39e | 6865 | GROW_VECT (name, name_len, len + strlen (suffix) + 1); |
14f9c5c9 AS |
6866 | |
6867 | strcpy (name, typename); | |
6868 | strcpy (name + len, suffix); | |
6869 | ||
6870 | return ada_find_any_type (name); | |
6871 | } | |
6872 | ||
6873 | ||
6874 | /* If TYPE is a variable-size record type, return the corresponding template | |
4c4b4cd2 | 6875 | type describing its fields. Otherwise, return NULL. */ |
14f9c5c9 | 6876 | |
d2e4a39e AS |
6877 | static struct type * |
6878 | dynamic_template_type (struct type *type) | |
14f9c5c9 | 6879 | { |
61ee279c | 6880 | type = ada_check_typedef (type); |
14f9c5c9 AS |
6881 | |
6882 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT | |
d2e4a39e | 6883 | || ada_type_name (type) == NULL) |
14f9c5c9 | 6884 | return NULL; |
d2e4a39e | 6885 | else |
14f9c5c9 AS |
6886 | { |
6887 | int len = strlen (ada_type_name (type)); | |
4c4b4cd2 PH |
6888 | if (len > 6 && strcmp (ada_type_name (type) + len - 6, "___XVE") == 0) |
6889 | return type; | |
14f9c5c9 | 6890 | else |
4c4b4cd2 | 6891 | return ada_find_parallel_type (type, "___XVE"); |
14f9c5c9 AS |
6892 | } |
6893 | } | |
6894 | ||
6895 | /* Assuming that TEMPL_TYPE is a union or struct type, returns | |
4c4b4cd2 | 6896 | non-zero iff field FIELD_NUM of TEMPL_TYPE has dynamic size. */ |
14f9c5c9 | 6897 | |
d2e4a39e AS |
6898 | static int |
6899 | is_dynamic_field (struct type *templ_type, int field_num) | |
14f9c5c9 AS |
6900 | { |
6901 | const char *name = TYPE_FIELD_NAME (templ_type, field_num); | |
d2e4a39e | 6902 | return name != NULL |
14f9c5c9 AS |
6903 | && TYPE_CODE (TYPE_FIELD_TYPE (templ_type, field_num)) == TYPE_CODE_PTR |
6904 | && strstr (name, "___XVL") != NULL; | |
6905 | } | |
6906 | ||
4c4b4cd2 PH |
6907 | /* The index of the variant field of TYPE, or -1 if TYPE does not |
6908 | represent a variant record type. */ | |
14f9c5c9 | 6909 | |
d2e4a39e | 6910 | static int |
4c4b4cd2 | 6911 | variant_field_index (struct type *type) |
14f9c5c9 AS |
6912 | { |
6913 | int f; | |
6914 | ||
4c4b4cd2 PH |
6915 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT) |
6916 | return -1; | |
6917 | ||
6918 | for (f = 0; f < TYPE_NFIELDS (type); f += 1) | |
6919 | { | |
6920 | if (ada_is_variant_part (type, f)) | |
6921 | return f; | |
6922 | } | |
6923 | return -1; | |
14f9c5c9 AS |
6924 | } |
6925 | ||
4c4b4cd2 PH |
6926 | /* A record type with no fields. */ |
6927 | ||
d2e4a39e AS |
6928 | static struct type * |
6929 | empty_record (struct objfile *objfile) | |
14f9c5c9 | 6930 | { |
d2e4a39e | 6931 | struct type *type = alloc_type (objfile); |
14f9c5c9 AS |
6932 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
6933 | TYPE_NFIELDS (type) = 0; | |
6934 | TYPE_FIELDS (type) = NULL; | |
6935 | TYPE_NAME (type) = "<empty>"; | |
6936 | TYPE_TAG_NAME (type) = NULL; | |
6937 | TYPE_FLAGS (type) = 0; | |
6938 | TYPE_LENGTH (type) = 0; | |
6939 | return type; | |
6940 | } | |
6941 | ||
6942 | /* An ordinary record type (with fixed-length fields) that describes | |
4c4b4cd2 PH |
6943 | the value of type TYPE at VALADDR or ADDRESS (see comments at |
6944 | the beginning of this section) VAL according to GNAT conventions. | |
6945 | DVAL0 should describe the (portion of a) record that contains any | |
df407dfe | 6946 | necessary discriminants. It should be NULL if value_type (VAL) is |
14f9c5c9 AS |
6947 | an outer-level type (i.e., as opposed to a branch of a variant.) A |
6948 | variant field (unless unchecked) is replaced by a particular branch | |
4c4b4cd2 | 6949 | of the variant. |
14f9c5c9 | 6950 | |
4c4b4cd2 PH |
6951 | If not KEEP_DYNAMIC_FIELDS, then all fields whose position or |
6952 | length are not statically known are discarded. As a consequence, | |
6953 | VALADDR, ADDRESS and DVAL0 are ignored. | |
6954 | ||
6955 | NOTE: Limitations: For now, we assume that dynamic fields and | |
6956 | variants occupy whole numbers of bytes. However, they need not be | |
6957 | byte-aligned. */ | |
6958 | ||
6959 | struct type * | |
10a2c479 | 6960 | ada_template_to_fixed_record_type_1 (struct type *type, |
fc1a4b47 | 6961 | const gdb_byte *valaddr, |
4c4b4cd2 PH |
6962 | CORE_ADDR address, struct value *dval0, |
6963 | int keep_dynamic_fields) | |
14f9c5c9 | 6964 | { |
d2e4a39e AS |
6965 | struct value *mark = value_mark (); |
6966 | struct value *dval; | |
6967 | struct type *rtype; | |
14f9c5c9 | 6968 | int nfields, bit_len; |
4c4b4cd2 | 6969 | int variant_field; |
14f9c5c9 | 6970 | long off; |
4c4b4cd2 | 6971 | int fld_bit_len, bit_incr; |
14f9c5c9 AS |
6972 | int f; |
6973 | ||
4c4b4cd2 PH |
6974 | /* Compute the number of fields in this record type that are going |
6975 | to be processed: unless keep_dynamic_fields, this includes only | |
6976 | fields whose position and length are static will be processed. */ | |
6977 | if (keep_dynamic_fields) | |
6978 | nfields = TYPE_NFIELDS (type); | |
6979 | else | |
6980 | { | |
6981 | nfields = 0; | |
76a01679 | 6982 | while (nfields < TYPE_NFIELDS (type) |
4c4b4cd2 PH |
6983 | && !ada_is_variant_part (type, nfields) |
6984 | && !is_dynamic_field (type, nfields)) | |
6985 | nfields++; | |
6986 | } | |
6987 | ||
14f9c5c9 AS |
6988 | rtype = alloc_type (TYPE_OBJFILE (type)); |
6989 | TYPE_CODE (rtype) = TYPE_CODE_STRUCT; | |
6990 | INIT_CPLUS_SPECIFIC (rtype); | |
6991 | TYPE_NFIELDS (rtype) = nfields; | |
d2e4a39e | 6992 | TYPE_FIELDS (rtype) = (struct field *) |
14f9c5c9 AS |
6993 | TYPE_ALLOC (rtype, nfields * sizeof (struct field)); |
6994 | memset (TYPE_FIELDS (rtype), 0, sizeof (struct field) * nfields); | |
6995 | TYPE_NAME (rtype) = ada_type_name (type); | |
6996 | TYPE_TAG_NAME (rtype) = NULL; | |
4c4b4cd2 | 6997 | TYPE_FLAGS (rtype) |= TYPE_FLAG_FIXED_INSTANCE; |
14f9c5c9 | 6998 | |
d2e4a39e AS |
6999 | off = 0; |
7000 | bit_len = 0; | |
4c4b4cd2 PH |
7001 | variant_field = -1; |
7002 | ||
14f9c5c9 AS |
7003 | for (f = 0; f < nfields; f += 1) |
7004 | { | |
6c038f32 PH |
7005 | off = align_value (off, field_alignment (type, f)) |
7006 | + TYPE_FIELD_BITPOS (type, f); | |
14f9c5c9 | 7007 | TYPE_FIELD_BITPOS (rtype, f) = off; |
d2e4a39e | 7008 | TYPE_FIELD_BITSIZE (rtype, f) = 0; |
14f9c5c9 | 7009 | |
d2e4a39e | 7010 | if (ada_is_variant_part (type, f)) |
4c4b4cd2 PH |
7011 | { |
7012 | variant_field = f; | |
7013 | fld_bit_len = bit_incr = 0; | |
7014 | } | |
14f9c5c9 | 7015 | else if (is_dynamic_field (type, f)) |
4c4b4cd2 PH |
7016 | { |
7017 | if (dval0 == NULL) | |
7018 | dval = value_from_contents_and_address (rtype, valaddr, address); | |
7019 | else | |
7020 | dval = dval0; | |
7021 | ||
1ed6ede0 JB |
7022 | /* Get the fixed type of the field. Note that, in this case, we |
7023 | do not want to get the real type out of the tag: if the current | |
7024 | field is the parent part of a tagged record, we will get the | |
7025 | tag of the object. Clearly wrong: the real type of the parent | |
7026 | is not the real type of the child. We would end up in an infinite | |
7027 | loop. */ | |
4c4b4cd2 PH |
7028 | TYPE_FIELD_TYPE (rtype, f) = |
7029 | ada_to_fixed_type | |
7030 | (ada_get_base_type | |
7031 | (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, f))), | |
7032 | cond_offset_host (valaddr, off / TARGET_CHAR_BIT), | |
1ed6ede0 | 7033 | cond_offset_target (address, off / TARGET_CHAR_BIT), dval, 0); |
4c4b4cd2 PH |
7034 | TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f); |
7035 | bit_incr = fld_bit_len = | |
7036 | TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, f)) * TARGET_CHAR_BIT; | |
7037 | } | |
14f9c5c9 | 7038 | else |
4c4b4cd2 PH |
7039 | { |
7040 | TYPE_FIELD_TYPE (rtype, f) = TYPE_FIELD_TYPE (type, f); | |
7041 | TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f); | |
7042 | if (TYPE_FIELD_BITSIZE (type, f) > 0) | |
7043 | bit_incr = fld_bit_len = | |
7044 | TYPE_FIELD_BITSIZE (rtype, f) = TYPE_FIELD_BITSIZE (type, f); | |
7045 | else | |
7046 | bit_incr = fld_bit_len = | |
7047 | TYPE_LENGTH (TYPE_FIELD_TYPE (type, f)) * TARGET_CHAR_BIT; | |
7048 | } | |
14f9c5c9 | 7049 | if (off + fld_bit_len > bit_len) |
4c4b4cd2 | 7050 | bit_len = off + fld_bit_len; |
14f9c5c9 | 7051 | off += bit_incr; |
4c4b4cd2 PH |
7052 | TYPE_LENGTH (rtype) = |
7053 | align_value (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT; | |
14f9c5c9 | 7054 | } |
4c4b4cd2 PH |
7055 | |
7056 | /* We handle the variant part, if any, at the end because of certain | |
7057 | odd cases in which it is re-ordered so as NOT the last field of | |
7058 | the record. This can happen in the presence of representation | |
7059 | clauses. */ | |
7060 | if (variant_field >= 0) | |
7061 | { | |
7062 | struct type *branch_type; | |
7063 | ||
7064 | off = TYPE_FIELD_BITPOS (rtype, variant_field); | |
7065 | ||
7066 | if (dval0 == NULL) | |
7067 | dval = value_from_contents_and_address (rtype, valaddr, address); | |
7068 | else | |
7069 | dval = dval0; | |
7070 | ||
7071 | branch_type = | |
7072 | to_fixed_variant_branch_type | |
7073 | (TYPE_FIELD_TYPE (type, variant_field), | |
7074 | cond_offset_host (valaddr, off / TARGET_CHAR_BIT), | |
7075 | cond_offset_target (address, off / TARGET_CHAR_BIT), dval); | |
7076 | if (branch_type == NULL) | |
7077 | { | |
7078 | for (f = variant_field + 1; f < TYPE_NFIELDS (rtype); f += 1) | |
7079 | TYPE_FIELDS (rtype)[f - 1] = TYPE_FIELDS (rtype)[f]; | |
7080 | TYPE_NFIELDS (rtype) -= 1; | |
7081 | } | |
7082 | else | |
7083 | { | |
7084 | TYPE_FIELD_TYPE (rtype, variant_field) = branch_type; | |
7085 | TYPE_FIELD_NAME (rtype, variant_field) = "S"; | |
7086 | fld_bit_len = | |
7087 | TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, variant_field)) * | |
7088 | TARGET_CHAR_BIT; | |
7089 | if (off + fld_bit_len > bit_len) | |
7090 | bit_len = off + fld_bit_len; | |
7091 | TYPE_LENGTH (rtype) = | |
7092 | align_value (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT; | |
7093 | } | |
7094 | } | |
7095 | ||
714e53ab PH |
7096 | /* According to exp_dbug.ads, the size of TYPE for variable-size records |
7097 | should contain the alignment of that record, which should be a strictly | |
7098 | positive value. If null or negative, then something is wrong, most | |
7099 | probably in the debug info. In that case, we don't round up the size | |
7100 | of the resulting type. If this record is not part of another structure, | |
7101 | the current RTYPE length might be good enough for our purposes. */ | |
7102 | if (TYPE_LENGTH (type) <= 0) | |
7103 | { | |
323e0a4a AC |
7104 | if (TYPE_NAME (rtype)) |
7105 | warning (_("Invalid type size for `%s' detected: %d."), | |
7106 | TYPE_NAME (rtype), TYPE_LENGTH (type)); | |
7107 | else | |
7108 | warning (_("Invalid type size for <unnamed> detected: %d."), | |
7109 | TYPE_LENGTH (type)); | |
714e53ab PH |
7110 | } |
7111 | else | |
7112 | { | |
7113 | TYPE_LENGTH (rtype) = align_value (TYPE_LENGTH (rtype), | |
7114 | TYPE_LENGTH (type)); | |
7115 | } | |
14f9c5c9 AS |
7116 | |
7117 | value_free_to_mark (mark); | |
d2e4a39e | 7118 | if (TYPE_LENGTH (rtype) > varsize_limit) |
323e0a4a | 7119 | error (_("record type with dynamic size is larger than varsize-limit")); |
14f9c5c9 AS |
7120 | return rtype; |
7121 | } | |
7122 | ||
4c4b4cd2 PH |
7123 | /* As for ada_template_to_fixed_record_type_1 with KEEP_DYNAMIC_FIELDS |
7124 | of 1. */ | |
14f9c5c9 | 7125 | |
d2e4a39e | 7126 | static struct type * |
fc1a4b47 | 7127 | template_to_fixed_record_type (struct type *type, const gdb_byte *valaddr, |
4c4b4cd2 PH |
7128 | CORE_ADDR address, struct value *dval0) |
7129 | { | |
7130 | return ada_template_to_fixed_record_type_1 (type, valaddr, | |
7131 | address, dval0, 1); | |
7132 | } | |
7133 | ||
7134 | /* An ordinary record type in which ___XVL-convention fields and | |
7135 | ___XVU- and ___XVN-convention field types in TYPE0 are replaced with | |
7136 | static approximations, containing all possible fields. Uses | |
7137 | no runtime values. Useless for use in values, but that's OK, | |
7138 | since the results are used only for type determinations. Works on both | |
7139 | structs and unions. Representation note: to save space, we memorize | |
7140 | the result of this function in the TYPE_TARGET_TYPE of the | |
7141 | template type. */ | |
7142 | ||
7143 | static struct type * | |
7144 | template_to_static_fixed_type (struct type *type0) | |
14f9c5c9 AS |
7145 | { |
7146 | struct type *type; | |
7147 | int nfields; | |
7148 | int f; | |
7149 | ||
4c4b4cd2 PH |
7150 | if (TYPE_TARGET_TYPE (type0) != NULL) |
7151 | return TYPE_TARGET_TYPE (type0); | |
7152 | ||
7153 | nfields = TYPE_NFIELDS (type0); | |
7154 | type = type0; | |
14f9c5c9 AS |
7155 | |
7156 | for (f = 0; f < nfields; f += 1) | |
7157 | { | |
61ee279c | 7158 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type0, f)); |
4c4b4cd2 | 7159 | struct type *new_type; |
14f9c5c9 | 7160 | |
4c4b4cd2 PH |
7161 | if (is_dynamic_field (type0, f)) |
7162 | new_type = to_static_fixed_type (TYPE_TARGET_TYPE (field_type)); | |
14f9c5c9 | 7163 | else |
f192137b | 7164 | new_type = static_unwrap_type (field_type); |
4c4b4cd2 PH |
7165 | if (type == type0 && new_type != field_type) |
7166 | { | |
7167 | TYPE_TARGET_TYPE (type0) = type = alloc_type (TYPE_OBJFILE (type0)); | |
7168 | TYPE_CODE (type) = TYPE_CODE (type0); | |
7169 | INIT_CPLUS_SPECIFIC (type); | |
7170 | TYPE_NFIELDS (type) = nfields; | |
7171 | TYPE_FIELDS (type) = (struct field *) | |
7172 | TYPE_ALLOC (type, nfields * sizeof (struct field)); | |
7173 | memcpy (TYPE_FIELDS (type), TYPE_FIELDS (type0), | |
7174 | sizeof (struct field) * nfields); | |
7175 | TYPE_NAME (type) = ada_type_name (type0); | |
7176 | TYPE_TAG_NAME (type) = NULL; | |
7177 | TYPE_FLAGS (type) |= TYPE_FLAG_FIXED_INSTANCE; | |
7178 | TYPE_LENGTH (type) = 0; | |
7179 | } | |
7180 | TYPE_FIELD_TYPE (type, f) = new_type; | |
7181 | TYPE_FIELD_NAME (type, f) = TYPE_FIELD_NAME (type0, f); | |
14f9c5c9 | 7182 | } |
14f9c5c9 AS |
7183 | return type; |
7184 | } | |
7185 | ||
4c4b4cd2 PH |
7186 | /* Given an object of type TYPE whose contents are at VALADDR and |
7187 | whose address in memory is ADDRESS, returns a revision of TYPE -- | |
7188 | a non-dynamic-sized record with a variant part -- in which | |
7189 | the variant part is replaced with the appropriate branch. Looks | |
7190 | for discriminant values in DVAL0, which can be NULL if the record | |
7191 | contains the necessary discriminant values. */ | |
7192 | ||
d2e4a39e | 7193 | static struct type * |
fc1a4b47 | 7194 | to_record_with_fixed_variant_part (struct type *type, const gdb_byte *valaddr, |
4c4b4cd2 | 7195 | CORE_ADDR address, struct value *dval0) |
14f9c5c9 | 7196 | { |
d2e4a39e | 7197 | struct value *mark = value_mark (); |
4c4b4cd2 | 7198 | struct value *dval; |
d2e4a39e | 7199 | struct type *rtype; |
14f9c5c9 AS |
7200 | struct type *branch_type; |
7201 | int nfields = TYPE_NFIELDS (type); | |
4c4b4cd2 | 7202 | int variant_field = variant_field_index (type); |
14f9c5c9 | 7203 | |
4c4b4cd2 | 7204 | if (variant_field == -1) |
14f9c5c9 AS |
7205 | return type; |
7206 | ||
4c4b4cd2 PH |
7207 | if (dval0 == NULL) |
7208 | dval = value_from_contents_and_address (type, valaddr, address); | |
7209 | else | |
7210 | dval = dval0; | |
7211 | ||
14f9c5c9 AS |
7212 | rtype = alloc_type (TYPE_OBJFILE (type)); |
7213 | TYPE_CODE (rtype) = TYPE_CODE_STRUCT; | |
4c4b4cd2 PH |
7214 | INIT_CPLUS_SPECIFIC (rtype); |
7215 | TYPE_NFIELDS (rtype) = nfields; | |
d2e4a39e AS |
7216 | TYPE_FIELDS (rtype) = |
7217 | (struct field *) TYPE_ALLOC (rtype, nfields * sizeof (struct field)); | |
7218 | memcpy (TYPE_FIELDS (rtype), TYPE_FIELDS (type), | |
4c4b4cd2 | 7219 | sizeof (struct field) * nfields); |
14f9c5c9 AS |
7220 | TYPE_NAME (rtype) = ada_type_name (type); |
7221 | TYPE_TAG_NAME (rtype) = NULL; | |
4c4b4cd2 | 7222 | TYPE_FLAGS (rtype) |= TYPE_FLAG_FIXED_INSTANCE; |
14f9c5c9 AS |
7223 | TYPE_LENGTH (rtype) = TYPE_LENGTH (type); |
7224 | ||
4c4b4cd2 PH |
7225 | branch_type = to_fixed_variant_branch_type |
7226 | (TYPE_FIELD_TYPE (type, variant_field), | |
d2e4a39e | 7227 | cond_offset_host (valaddr, |
4c4b4cd2 PH |
7228 | TYPE_FIELD_BITPOS (type, variant_field) |
7229 | / TARGET_CHAR_BIT), | |
d2e4a39e | 7230 | cond_offset_target (address, |
4c4b4cd2 PH |
7231 | TYPE_FIELD_BITPOS (type, variant_field) |
7232 | / TARGET_CHAR_BIT), dval); | |
d2e4a39e | 7233 | if (branch_type == NULL) |
14f9c5c9 | 7234 | { |
4c4b4cd2 PH |
7235 | int f; |
7236 | for (f = variant_field + 1; f < nfields; f += 1) | |
7237 | TYPE_FIELDS (rtype)[f - 1] = TYPE_FIELDS (rtype)[f]; | |
14f9c5c9 | 7238 | TYPE_NFIELDS (rtype) -= 1; |
14f9c5c9 AS |
7239 | } |
7240 | else | |
7241 | { | |
4c4b4cd2 PH |
7242 | TYPE_FIELD_TYPE (rtype, variant_field) = branch_type; |
7243 | TYPE_FIELD_NAME (rtype, variant_field) = "S"; | |
7244 | TYPE_FIELD_BITSIZE (rtype, variant_field) = 0; | |
14f9c5c9 | 7245 | TYPE_LENGTH (rtype) += TYPE_LENGTH (branch_type); |
14f9c5c9 | 7246 | } |
4c4b4cd2 | 7247 | TYPE_LENGTH (rtype) -= TYPE_LENGTH (TYPE_FIELD_TYPE (type, variant_field)); |
d2e4a39e | 7248 | |
4c4b4cd2 | 7249 | value_free_to_mark (mark); |
14f9c5c9 AS |
7250 | return rtype; |
7251 | } | |
7252 | ||
7253 | /* An ordinary record type (with fixed-length fields) that describes | |
7254 | the value at (TYPE0, VALADDR, ADDRESS) [see explanation at | |
7255 | beginning of this section]. Any necessary discriminants' values | |
4c4b4cd2 PH |
7256 | should be in DVAL, a record value; it may be NULL if the object |
7257 | at ADDR itself contains any necessary discriminant values. | |
7258 | Additionally, VALADDR and ADDRESS may also be NULL if no discriminant | |
7259 | values from the record are needed. Except in the case that DVAL, | |
7260 | VALADDR, and ADDRESS are all 0 or NULL, a variant field (unless | |
7261 | unchecked) is replaced by a particular branch of the variant. | |
7262 | ||
7263 | NOTE: the case in which DVAL and VALADDR are NULL and ADDRESS is 0 | |
7264 | is questionable and may be removed. It can arise during the | |
7265 | processing of an unconstrained-array-of-record type where all the | |
7266 | variant branches have exactly the same size. This is because in | |
7267 | such cases, the compiler does not bother to use the XVS convention | |
7268 | when encoding the record. I am currently dubious of this | |
7269 | shortcut and suspect the compiler should be altered. FIXME. */ | |
14f9c5c9 | 7270 | |
d2e4a39e | 7271 | static struct type * |
fc1a4b47 | 7272 | to_fixed_record_type (struct type *type0, const gdb_byte *valaddr, |
4c4b4cd2 | 7273 | CORE_ADDR address, struct value *dval) |
14f9c5c9 | 7274 | { |
d2e4a39e | 7275 | struct type *templ_type; |
14f9c5c9 | 7276 | |
4c4b4cd2 PH |
7277 | if (TYPE_FLAGS (type0) & TYPE_FLAG_FIXED_INSTANCE) |
7278 | return type0; | |
7279 | ||
d2e4a39e | 7280 | templ_type = dynamic_template_type (type0); |
14f9c5c9 AS |
7281 | |
7282 | if (templ_type != NULL) | |
7283 | return template_to_fixed_record_type (templ_type, valaddr, address, dval); | |
4c4b4cd2 PH |
7284 | else if (variant_field_index (type0) >= 0) |
7285 | { | |
7286 | if (dval == NULL && valaddr == NULL && address == 0) | |
7287 | return type0; | |
7288 | return to_record_with_fixed_variant_part (type0, valaddr, address, | |
7289 | dval); | |
7290 | } | |
14f9c5c9 AS |
7291 | else |
7292 | { | |
4c4b4cd2 | 7293 | TYPE_FLAGS (type0) |= TYPE_FLAG_FIXED_INSTANCE; |
14f9c5c9 AS |
7294 | return type0; |
7295 | } | |
7296 | ||
7297 | } | |
7298 | ||
7299 | /* An ordinary record type (with fixed-length fields) that describes | |
7300 | the value at (VAR_TYPE0, VALADDR, ADDRESS), where VAR_TYPE0 is a | |
7301 | union type. Any necessary discriminants' values should be in DVAL, | |
7302 | a record value. That is, this routine selects the appropriate | |
7303 | branch of the union at ADDR according to the discriminant value | |
4c4b4cd2 | 7304 | indicated in the union's type name. */ |
14f9c5c9 | 7305 | |
d2e4a39e | 7306 | static struct type * |
fc1a4b47 | 7307 | to_fixed_variant_branch_type (struct type *var_type0, const gdb_byte *valaddr, |
4c4b4cd2 | 7308 | CORE_ADDR address, struct value *dval) |
14f9c5c9 AS |
7309 | { |
7310 | int which; | |
d2e4a39e AS |
7311 | struct type *templ_type; |
7312 | struct type *var_type; | |
14f9c5c9 AS |
7313 | |
7314 | if (TYPE_CODE (var_type0) == TYPE_CODE_PTR) | |
7315 | var_type = TYPE_TARGET_TYPE (var_type0); | |
d2e4a39e | 7316 | else |
14f9c5c9 AS |
7317 | var_type = var_type0; |
7318 | ||
7319 | templ_type = ada_find_parallel_type (var_type, "___XVU"); | |
7320 | ||
7321 | if (templ_type != NULL) | |
7322 | var_type = templ_type; | |
7323 | ||
d2e4a39e AS |
7324 | which = |
7325 | ada_which_variant_applies (var_type, | |
0fd88904 | 7326 | value_type (dval), value_contents (dval)); |
14f9c5c9 AS |
7327 | |
7328 | if (which < 0) | |
7329 | return empty_record (TYPE_OBJFILE (var_type)); | |
7330 | else if (is_dynamic_field (var_type, which)) | |
4c4b4cd2 | 7331 | return to_fixed_record_type |
d2e4a39e AS |
7332 | (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (var_type, which)), |
7333 | valaddr, address, dval); | |
4c4b4cd2 | 7334 | else if (variant_field_index (TYPE_FIELD_TYPE (var_type, which)) >= 0) |
d2e4a39e AS |
7335 | return |
7336 | to_fixed_record_type | |
7337 | (TYPE_FIELD_TYPE (var_type, which), valaddr, address, dval); | |
14f9c5c9 AS |
7338 | else |
7339 | return TYPE_FIELD_TYPE (var_type, which); | |
7340 | } | |
7341 | ||
7342 | /* Assuming that TYPE0 is an array type describing the type of a value | |
7343 | at ADDR, and that DVAL describes a record containing any | |
7344 | discriminants used in TYPE0, returns a type for the value that | |
7345 | contains no dynamic components (that is, no components whose sizes | |
7346 | are determined by run-time quantities). Unless IGNORE_TOO_BIG is | |
7347 | true, gives an error message if the resulting type's size is over | |
4c4b4cd2 | 7348 | varsize_limit. */ |
14f9c5c9 | 7349 | |
d2e4a39e AS |
7350 | static struct type * |
7351 | to_fixed_array_type (struct type *type0, struct value *dval, | |
4c4b4cd2 | 7352 | int ignore_too_big) |
14f9c5c9 | 7353 | { |
d2e4a39e AS |
7354 | struct type *index_type_desc; |
7355 | struct type *result; | |
14f9c5c9 | 7356 | |
4c4b4cd2 PH |
7357 | if (ada_is_packed_array_type (type0) /* revisit? */ |
7358 | || (TYPE_FLAGS (type0) & TYPE_FLAG_FIXED_INSTANCE)) | |
7359 | return type0; | |
14f9c5c9 AS |
7360 | |
7361 | index_type_desc = ada_find_parallel_type (type0, "___XA"); | |
7362 | if (index_type_desc == NULL) | |
7363 | { | |
61ee279c | 7364 | struct type *elt_type0 = ada_check_typedef (TYPE_TARGET_TYPE (type0)); |
14f9c5c9 | 7365 | /* NOTE: elt_type---the fixed version of elt_type0---should never |
4c4b4cd2 PH |
7366 | depend on the contents of the array in properly constructed |
7367 | debugging data. */ | |
529cad9c PH |
7368 | /* Create a fixed version of the array element type. |
7369 | We're not providing the address of an element here, | |
e1d5a0d2 | 7370 | and thus the actual object value cannot be inspected to do |
529cad9c PH |
7371 | the conversion. This should not be a problem, since arrays of |
7372 | unconstrained objects are not allowed. In particular, all | |
7373 | the elements of an array of a tagged type should all be of | |
7374 | the same type specified in the debugging info. No need to | |
7375 | consult the object tag. */ | |
1ed6ede0 | 7376 | struct type *elt_type = ada_to_fixed_type (elt_type0, 0, 0, dval, 1); |
14f9c5c9 AS |
7377 | |
7378 | if (elt_type0 == elt_type) | |
4c4b4cd2 | 7379 | result = type0; |
14f9c5c9 | 7380 | else |
4c4b4cd2 PH |
7381 | result = create_array_type (alloc_type (TYPE_OBJFILE (type0)), |
7382 | elt_type, TYPE_INDEX_TYPE (type0)); | |
14f9c5c9 AS |
7383 | } |
7384 | else | |
7385 | { | |
7386 | int i; | |
7387 | struct type *elt_type0; | |
7388 | ||
7389 | elt_type0 = type0; | |
7390 | for (i = TYPE_NFIELDS (index_type_desc); i > 0; i -= 1) | |
4c4b4cd2 | 7391 | elt_type0 = TYPE_TARGET_TYPE (elt_type0); |
14f9c5c9 AS |
7392 | |
7393 | /* NOTE: result---the fixed version of elt_type0---should never | |
4c4b4cd2 PH |
7394 | depend on the contents of the array in properly constructed |
7395 | debugging data. */ | |
529cad9c PH |
7396 | /* Create a fixed version of the array element type. |
7397 | We're not providing the address of an element here, | |
e1d5a0d2 | 7398 | and thus the actual object value cannot be inspected to do |
529cad9c PH |
7399 | the conversion. This should not be a problem, since arrays of |
7400 | unconstrained objects are not allowed. In particular, all | |
7401 | the elements of an array of a tagged type should all be of | |
7402 | the same type specified in the debugging info. No need to | |
7403 | consult the object tag. */ | |
1ed6ede0 JB |
7404 | result = |
7405 | ada_to_fixed_type (ada_check_typedef (elt_type0), 0, 0, dval, 1); | |
14f9c5c9 | 7406 | for (i = TYPE_NFIELDS (index_type_desc) - 1; i >= 0; i -= 1) |
4c4b4cd2 PH |
7407 | { |
7408 | struct type *range_type = | |
7409 | to_fixed_range_type (TYPE_FIELD_NAME (index_type_desc, i), | |
7410 | dval, TYPE_OBJFILE (type0)); | |
7411 | result = create_array_type (alloc_type (TYPE_OBJFILE (type0)), | |
7412 | result, range_type); | |
7413 | } | |
d2e4a39e | 7414 | if (!ignore_too_big && TYPE_LENGTH (result) > varsize_limit) |
323e0a4a | 7415 | error (_("array type with dynamic size is larger than varsize-limit")); |
14f9c5c9 AS |
7416 | } |
7417 | ||
4c4b4cd2 | 7418 | TYPE_FLAGS (result) |= TYPE_FLAG_FIXED_INSTANCE; |
14f9c5c9 | 7419 | return result; |
d2e4a39e | 7420 | } |
14f9c5c9 AS |
7421 | |
7422 | ||
7423 | /* A standard type (containing no dynamically sized components) | |
7424 | corresponding to TYPE for the value (TYPE, VALADDR, ADDRESS) | |
7425 | DVAL describes a record containing any discriminants used in TYPE0, | |
4c4b4cd2 | 7426 | and may be NULL if there are none, or if the object of type TYPE at |
529cad9c PH |
7427 | ADDRESS or in VALADDR contains these discriminants. |
7428 | ||
1ed6ede0 JB |
7429 | If CHECK_TAG is not null, in the case of tagged types, this function |
7430 | attempts to locate the object's tag and use it to compute the actual | |
7431 | type. However, when ADDRESS is null, we cannot use it to determine the | |
7432 | location of the tag, and therefore compute the tagged type's actual type. | |
7433 | So we return the tagged type without consulting the tag. */ | |
529cad9c | 7434 | |
f192137b JB |
7435 | static struct type * |
7436 | ada_to_fixed_type_1 (struct type *type, const gdb_byte *valaddr, | |
1ed6ede0 | 7437 | CORE_ADDR address, struct value *dval, int check_tag) |
14f9c5c9 | 7438 | { |
61ee279c | 7439 | type = ada_check_typedef (type); |
d2e4a39e AS |
7440 | switch (TYPE_CODE (type)) |
7441 | { | |
7442 | default: | |
14f9c5c9 | 7443 | return type; |
d2e4a39e | 7444 | case TYPE_CODE_STRUCT: |
4c4b4cd2 | 7445 | { |
76a01679 | 7446 | struct type *static_type = to_static_fixed_type (type); |
1ed6ede0 JB |
7447 | struct type *fixed_record_type = |
7448 | to_fixed_record_type (type, valaddr, address, NULL); | |
529cad9c PH |
7449 | /* If STATIC_TYPE is a tagged type and we know the object's address, |
7450 | then we can determine its tag, and compute the object's actual | |
1ed6ede0 JB |
7451 | type from there. Note that we have to use the fixed record |
7452 | type (the parent part of the record may have dynamic fields | |
7453 | and the way the location of _tag is expressed may depend on | |
7454 | them). */ | |
529cad9c | 7455 | |
1ed6ede0 | 7456 | if (check_tag && address != 0 && ada_is_tagged_type (static_type, 0)) |
76a01679 JB |
7457 | { |
7458 | struct type *real_type = | |
1ed6ede0 JB |
7459 | type_from_tag (value_tag_from_contents_and_address |
7460 | (fixed_record_type, | |
7461 | valaddr, | |
7462 | address)); | |
76a01679 | 7463 | if (real_type != NULL) |
1ed6ede0 | 7464 | return to_fixed_record_type (real_type, valaddr, address, NULL); |
76a01679 | 7465 | } |
1ed6ede0 | 7466 | return fixed_record_type; |
4c4b4cd2 | 7467 | } |
d2e4a39e | 7468 | case TYPE_CODE_ARRAY: |
4c4b4cd2 | 7469 | return to_fixed_array_type (type, dval, 1); |
d2e4a39e AS |
7470 | case TYPE_CODE_UNION: |
7471 | if (dval == NULL) | |
4c4b4cd2 | 7472 | return type; |
d2e4a39e | 7473 | else |
4c4b4cd2 | 7474 | return to_fixed_variant_branch_type (type, valaddr, address, dval); |
d2e4a39e | 7475 | } |
14f9c5c9 AS |
7476 | } |
7477 | ||
f192137b JB |
7478 | /* The same as ada_to_fixed_type_1, except that it preserves the type |
7479 | if it is a TYPE_CODE_TYPEDEF of a type that is already fixed. | |
7480 | ada_to_fixed_type_1 would return the type referenced by TYPE. */ | |
7481 | ||
7482 | struct type * | |
7483 | ada_to_fixed_type (struct type *type, const gdb_byte *valaddr, | |
7484 | CORE_ADDR address, struct value *dval, int check_tag) | |
7485 | ||
7486 | { | |
7487 | struct type *fixed_type = | |
7488 | ada_to_fixed_type_1 (type, valaddr, address, dval, check_tag); | |
7489 | ||
7490 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF | |
7491 | && TYPE_TARGET_TYPE (type) == fixed_type) | |
7492 | return type; | |
7493 | ||
7494 | return fixed_type; | |
7495 | } | |
7496 | ||
14f9c5c9 | 7497 | /* A standard (static-sized) type corresponding as well as possible to |
4c4b4cd2 | 7498 | TYPE0, but based on no runtime data. */ |
14f9c5c9 | 7499 | |
d2e4a39e AS |
7500 | static struct type * |
7501 | to_static_fixed_type (struct type *type0) | |
14f9c5c9 | 7502 | { |
d2e4a39e | 7503 | struct type *type; |
14f9c5c9 AS |
7504 | |
7505 | if (type0 == NULL) | |
7506 | return NULL; | |
7507 | ||
4c4b4cd2 PH |
7508 | if (TYPE_FLAGS (type0) & TYPE_FLAG_FIXED_INSTANCE) |
7509 | return type0; | |
7510 | ||
61ee279c | 7511 | type0 = ada_check_typedef (type0); |
d2e4a39e | 7512 | |
14f9c5c9 AS |
7513 | switch (TYPE_CODE (type0)) |
7514 | { | |
7515 | default: | |
7516 | return type0; | |
7517 | case TYPE_CODE_STRUCT: | |
7518 | type = dynamic_template_type (type0); | |
d2e4a39e | 7519 | if (type != NULL) |
4c4b4cd2 PH |
7520 | return template_to_static_fixed_type (type); |
7521 | else | |
7522 | return template_to_static_fixed_type (type0); | |
14f9c5c9 AS |
7523 | case TYPE_CODE_UNION: |
7524 | type = ada_find_parallel_type (type0, "___XVU"); | |
7525 | if (type != NULL) | |
4c4b4cd2 PH |
7526 | return template_to_static_fixed_type (type); |
7527 | else | |
7528 | return template_to_static_fixed_type (type0); | |
14f9c5c9 AS |
7529 | } |
7530 | } | |
7531 | ||
4c4b4cd2 PH |
7532 | /* A static approximation of TYPE with all type wrappers removed. */ |
7533 | ||
d2e4a39e AS |
7534 | static struct type * |
7535 | static_unwrap_type (struct type *type) | |
14f9c5c9 AS |
7536 | { |
7537 | if (ada_is_aligner_type (type)) | |
7538 | { | |
61ee279c | 7539 | struct type *type1 = TYPE_FIELD_TYPE (ada_check_typedef (type), 0); |
14f9c5c9 | 7540 | if (ada_type_name (type1) == NULL) |
4c4b4cd2 | 7541 | TYPE_NAME (type1) = ada_type_name (type); |
14f9c5c9 AS |
7542 | |
7543 | return static_unwrap_type (type1); | |
7544 | } | |
d2e4a39e | 7545 | else |
14f9c5c9 | 7546 | { |
d2e4a39e AS |
7547 | struct type *raw_real_type = ada_get_base_type (type); |
7548 | if (raw_real_type == type) | |
4c4b4cd2 | 7549 | return type; |
14f9c5c9 | 7550 | else |
4c4b4cd2 | 7551 | return to_static_fixed_type (raw_real_type); |
14f9c5c9 AS |
7552 | } |
7553 | } | |
7554 | ||
7555 | /* In some cases, incomplete and private types require | |
4c4b4cd2 | 7556 | cross-references that are not resolved as records (for example, |
14f9c5c9 AS |
7557 | type Foo; |
7558 | type FooP is access Foo; | |
7559 | V: FooP; | |
7560 | type Foo is array ...; | |
4c4b4cd2 | 7561 | ). In these cases, since there is no mechanism for producing |
14f9c5c9 AS |
7562 | cross-references to such types, we instead substitute for FooP a |
7563 | stub enumeration type that is nowhere resolved, and whose tag is | |
4c4b4cd2 | 7564 | the name of the actual type. Call these types "non-record stubs". */ |
14f9c5c9 AS |
7565 | |
7566 | /* A type equivalent to TYPE that is not a non-record stub, if one | |
4c4b4cd2 PH |
7567 | exists, otherwise TYPE. */ |
7568 | ||
d2e4a39e | 7569 | struct type * |
61ee279c | 7570 | ada_check_typedef (struct type *type) |
14f9c5c9 | 7571 | { |
727e3d2e JB |
7572 | if (type == NULL) |
7573 | return NULL; | |
7574 | ||
14f9c5c9 AS |
7575 | CHECK_TYPEDEF (type); |
7576 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_ENUM | |
529cad9c | 7577 | || !TYPE_STUB (type) |
14f9c5c9 AS |
7578 | || TYPE_TAG_NAME (type) == NULL) |
7579 | return type; | |
d2e4a39e | 7580 | else |
14f9c5c9 | 7581 | { |
d2e4a39e AS |
7582 | char *name = TYPE_TAG_NAME (type); |
7583 | struct type *type1 = ada_find_any_type (name); | |
14f9c5c9 AS |
7584 | return (type1 == NULL) ? type : type1; |
7585 | } | |
7586 | } | |
7587 | ||
7588 | /* A value representing the data at VALADDR/ADDRESS as described by | |
7589 | type TYPE0, but with a standard (static-sized) type that correctly | |
7590 | describes it. If VAL0 is not NULL and TYPE0 already is a standard | |
7591 | type, then return VAL0 [this feature is simply to avoid redundant | |
4c4b4cd2 | 7592 | creation of struct values]. */ |
14f9c5c9 | 7593 | |
4c4b4cd2 PH |
7594 | static struct value * |
7595 | ada_to_fixed_value_create (struct type *type0, CORE_ADDR address, | |
7596 | struct value *val0) | |
14f9c5c9 | 7597 | { |
1ed6ede0 | 7598 | struct type *type = ada_to_fixed_type (type0, 0, address, NULL, 1); |
14f9c5c9 AS |
7599 | if (type == type0 && val0 != NULL) |
7600 | return val0; | |
d2e4a39e | 7601 | else |
4c4b4cd2 PH |
7602 | return value_from_contents_and_address (type, 0, address); |
7603 | } | |
7604 | ||
7605 | /* A value representing VAL, but with a standard (static-sized) type | |
7606 | that correctly describes it. Does not necessarily create a new | |
7607 | value. */ | |
7608 | ||
7609 | static struct value * | |
7610 | ada_to_fixed_value (struct value *val) | |
7611 | { | |
df407dfe AC |
7612 | return ada_to_fixed_value_create (value_type (val), |
7613 | VALUE_ADDRESS (val) + value_offset (val), | |
4c4b4cd2 | 7614 | val); |
14f9c5c9 AS |
7615 | } |
7616 | ||
4c4b4cd2 | 7617 | /* A value representing VAL, but with a standard (static-sized) type |
14f9c5c9 AS |
7618 | chosen to approximate the real type of VAL as well as possible, but |
7619 | without consulting any runtime values. For Ada dynamic-sized | |
4c4b4cd2 | 7620 | types, therefore, the type of the result is likely to be inaccurate. */ |
14f9c5c9 | 7621 | |
d2e4a39e AS |
7622 | struct value * |
7623 | ada_to_static_fixed_value (struct value *val) | |
14f9c5c9 | 7624 | { |
d2e4a39e | 7625 | struct type *type = |
df407dfe AC |
7626 | to_static_fixed_type (static_unwrap_type (value_type (val))); |
7627 | if (type == value_type (val)) | |
14f9c5c9 AS |
7628 | return val; |
7629 | else | |
4c4b4cd2 | 7630 | return coerce_unspec_val_to_type (val, type); |
14f9c5c9 | 7631 | } |
d2e4a39e | 7632 | \f |
14f9c5c9 | 7633 | |
14f9c5c9 AS |
7634 | /* Attributes */ |
7635 | ||
4c4b4cd2 PH |
7636 | /* Table mapping attribute numbers to names. |
7637 | NOTE: Keep up to date with enum ada_attribute definition in ada-lang.h. */ | |
14f9c5c9 | 7638 | |
d2e4a39e | 7639 | static const char *attribute_names[] = { |
14f9c5c9 AS |
7640 | "<?>", |
7641 | ||
d2e4a39e | 7642 | "first", |
14f9c5c9 AS |
7643 | "last", |
7644 | "length", | |
7645 | "image", | |
14f9c5c9 AS |
7646 | "max", |
7647 | "min", | |
4c4b4cd2 PH |
7648 | "modulus", |
7649 | "pos", | |
7650 | "size", | |
7651 | "tag", | |
14f9c5c9 | 7652 | "val", |
14f9c5c9 AS |
7653 | 0 |
7654 | }; | |
7655 | ||
d2e4a39e | 7656 | const char * |
4c4b4cd2 | 7657 | ada_attribute_name (enum exp_opcode n) |
14f9c5c9 | 7658 | { |
4c4b4cd2 PH |
7659 | if (n >= OP_ATR_FIRST && n <= (int) OP_ATR_VAL) |
7660 | return attribute_names[n - OP_ATR_FIRST + 1]; | |
14f9c5c9 AS |
7661 | else |
7662 | return attribute_names[0]; | |
7663 | } | |
7664 | ||
4c4b4cd2 | 7665 | /* Evaluate the 'POS attribute applied to ARG. */ |
14f9c5c9 | 7666 | |
4c4b4cd2 PH |
7667 | static LONGEST |
7668 | pos_atr (struct value *arg) | |
14f9c5c9 | 7669 | { |
df407dfe | 7670 | struct type *type = value_type (arg); |
14f9c5c9 | 7671 | |
d2e4a39e | 7672 | if (!discrete_type_p (type)) |
323e0a4a | 7673 | error (_("'POS only defined on discrete types")); |
14f9c5c9 AS |
7674 | |
7675 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) | |
7676 | { | |
7677 | int i; | |
7678 | LONGEST v = value_as_long (arg); | |
7679 | ||
d2e4a39e | 7680 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) |
4c4b4cd2 PH |
7681 | { |
7682 | if (v == TYPE_FIELD_BITPOS (type, i)) | |
7683 | return i; | |
7684 | } | |
323e0a4a | 7685 | error (_("enumeration value is invalid: can't find 'POS")); |
14f9c5c9 AS |
7686 | } |
7687 | else | |
4c4b4cd2 PH |
7688 | return value_as_long (arg); |
7689 | } | |
7690 | ||
7691 | static struct value * | |
7692 | value_pos_atr (struct value *arg) | |
7693 | { | |
72d5681a | 7694 | return value_from_longest (builtin_type_int, pos_atr (arg)); |
14f9c5c9 AS |
7695 | } |
7696 | ||
4c4b4cd2 | 7697 | /* Evaluate the TYPE'VAL attribute applied to ARG. */ |
14f9c5c9 | 7698 | |
d2e4a39e AS |
7699 | static struct value * |
7700 | value_val_atr (struct type *type, struct value *arg) | |
14f9c5c9 | 7701 | { |
d2e4a39e | 7702 | if (!discrete_type_p (type)) |
323e0a4a | 7703 | error (_("'VAL only defined on discrete types")); |
df407dfe | 7704 | if (!integer_type_p (value_type (arg))) |
323e0a4a | 7705 | error (_("'VAL requires integral argument")); |
14f9c5c9 AS |
7706 | |
7707 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) | |
7708 | { | |
7709 | long pos = value_as_long (arg); | |
7710 | if (pos < 0 || pos >= TYPE_NFIELDS (type)) | |
323e0a4a | 7711 | error (_("argument to 'VAL out of range")); |
d2e4a39e | 7712 | return value_from_longest (type, TYPE_FIELD_BITPOS (type, pos)); |
14f9c5c9 AS |
7713 | } |
7714 | else | |
7715 | return value_from_longest (type, value_as_long (arg)); | |
7716 | } | |
14f9c5c9 | 7717 | \f |
d2e4a39e | 7718 | |
4c4b4cd2 | 7719 | /* Evaluation */ |
14f9c5c9 | 7720 | |
4c4b4cd2 PH |
7721 | /* True if TYPE appears to be an Ada character type. |
7722 | [At the moment, this is true only for Character and Wide_Character; | |
7723 | It is a heuristic test that could stand improvement]. */ | |
14f9c5c9 | 7724 | |
d2e4a39e AS |
7725 | int |
7726 | ada_is_character_type (struct type *type) | |
14f9c5c9 | 7727 | { |
7b9f71f2 JB |
7728 | const char *name; |
7729 | ||
7730 | /* If the type code says it's a character, then assume it really is, | |
7731 | and don't check any further. */ | |
7732 | if (TYPE_CODE (type) == TYPE_CODE_CHAR) | |
7733 | return 1; | |
7734 | ||
7735 | /* Otherwise, assume it's a character type iff it is a discrete type | |
7736 | with a known character type name. */ | |
7737 | name = ada_type_name (type); | |
7738 | return (name != NULL | |
7739 | && (TYPE_CODE (type) == TYPE_CODE_INT | |
7740 | || TYPE_CODE (type) == TYPE_CODE_RANGE) | |
7741 | && (strcmp (name, "character") == 0 | |
7742 | || strcmp (name, "wide_character") == 0 | |
5a517ebd | 7743 | || strcmp (name, "wide_wide_character") == 0 |
7b9f71f2 | 7744 | || strcmp (name, "unsigned char") == 0)); |
14f9c5c9 AS |
7745 | } |
7746 | ||
4c4b4cd2 | 7747 | /* True if TYPE appears to be an Ada string type. */ |
14f9c5c9 AS |
7748 | |
7749 | int | |
ebf56fd3 | 7750 | ada_is_string_type (struct type *type) |
14f9c5c9 | 7751 | { |
61ee279c | 7752 | type = ada_check_typedef (type); |
d2e4a39e | 7753 | if (type != NULL |
14f9c5c9 | 7754 | && TYPE_CODE (type) != TYPE_CODE_PTR |
76a01679 JB |
7755 | && (ada_is_simple_array_type (type) |
7756 | || ada_is_array_descriptor_type (type)) | |
14f9c5c9 AS |
7757 | && ada_array_arity (type) == 1) |
7758 | { | |
7759 | struct type *elttype = ada_array_element_type (type, 1); | |
7760 | ||
7761 | return ada_is_character_type (elttype); | |
7762 | } | |
d2e4a39e | 7763 | else |
14f9c5c9 AS |
7764 | return 0; |
7765 | } | |
7766 | ||
7767 | ||
7768 | /* True if TYPE is a struct type introduced by the compiler to force the | |
7769 | alignment of a value. Such types have a single field with a | |
4c4b4cd2 | 7770 | distinctive name. */ |
14f9c5c9 AS |
7771 | |
7772 | int | |
ebf56fd3 | 7773 | ada_is_aligner_type (struct type *type) |
14f9c5c9 | 7774 | { |
61ee279c | 7775 | type = ada_check_typedef (type); |
714e53ab PH |
7776 | |
7777 | /* If we can find a parallel XVS type, then the XVS type should | |
7778 | be used instead of this type. And hence, this is not an aligner | |
7779 | type. */ | |
7780 | if (ada_find_parallel_type (type, "___XVS") != NULL) | |
7781 | return 0; | |
7782 | ||
14f9c5c9 | 7783 | return (TYPE_CODE (type) == TYPE_CODE_STRUCT |
4c4b4cd2 PH |
7784 | && TYPE_NFIELDS (type) == 1 |
7785 | && strcmp (TYPE_FIELD_NAME (type, 0), "F") == 0); | |
14f9c5c9 AS |
7786 | } |
7787 | ||
7788 | /* If there is an ___XVS-convention type parallel to SUBTYPE, return | |
4c4b4cd2 | 7789 | the parallel type. */ |
14f9c5c9 | 7790 | |
d2e4a39e AS |
7791 | struct type * |
7792 | ada_get_base_type (struct type *raw_type) | |
14f9c5c9 | 7793 | { |
d2e4a39e AS |
7794 | struct type *real_type_namer; |
7795 | struct type *raw_real_type; | |
14f9c5c9 AS |
7796 | |
7797 | if (raw_type == NULL || TYPE_CODE (raw_type) != TYPE_CODE_STRUCT) | |
7798 | return raw_type; | |
7799 | ||
7800 | real_type_namer = ada_find_parallel_type (raw_type, "___XVS"); | |
d2e4a39e | 7801 | if (real_type_namer == NULL |
14f9c5c9 AS |
7802 | || TYPE_CODE (real_type_namer) != TYPE_CODE_STRUCT |
7803 | || TYPE_NFIELDS (real_type_namer) != 1) | |
7804 | return raw_type; | |
7805 | ||
7806 | raw_real_type = ada_find_any_type (TYPE_FIELD_NAME (real_type_namer, 0)); | |
d2e4a39e | 7807 | if (raw_real_type == NULL) |
14f9c5c9 AS |
7808 | return raw_type; |
7809 | else | |
7810 | return raw_real_type; | |
d2e4a39e | 7811 | } |
14f9c5c9 | 7812 | |
4c4b4cd2 | 7813 | /* The type of value designated by TYPE, with all aligners removed. */ |
14f9c5c9 | 7814 | |
d2e4a39e AS |
7815 | struct type * |
7816 | ada_aligned_type (struct type *type) | |
14f9c5c9 AS |
7817 | { |
7818 | if (ada_is_aligner_type (type)) | |
7819 | return ada_aligned_type (TYPE_FIELD_TYPE (type, 0)); | |
7820 | else | |
7821 | return ada_get_base_type (type); | |
7822 | } | |
7823 | ||
7824 | ||
7825 | /* The address of the aligned value in an object at address VALADDR | |
4c4b4cd2 | 7826 | having type TYPE. Assumes ada_is_aligner_type (TYPE). */ |
14f9c5c9 | 7827 | |
fc1a4b47 AC |
7828 | const gdb_byte * |
7829 | ada_aligned_value_addr (struct type *type, const gdb_byte *valaddr) | |
14f9c5c9 | 7830 | { |
d2e4a39e | 7831 | if (ada_is_aligner_type (type)) |
14f9c5c9 | 7832 | return ada_aligned_value_addr (TYPE_FIELD_TYPE (type, 0), |
4c4b4cd2 PH |
7833 | valaddr + |
7834 | TYPE_FIELD_BITPOS (type, | |
7835 | 0) / TARGET_CHAR_BIT); | |
14f9c5c9 AS |
7836 | else |
7837 | return valaddr; | |
7838 | } | |
7839 | ||
4c4b4cd2 PH |
7840 | |
7841 | ||
14f9c5c9 | 7842 | /* The printed representation of an enumeration literal with encoded |
4c4b4cd2 | 7843 | name NAME. The value is good to the next call of ada_enum_name. */ |
d2e4a39e AS |
7844 | const char * |
7845 | ada_enum_name (const char *name) | |
14f9c5c9 | 7846 | { |
4c4b4cd2 PH |
7847 | static char *result; |
7848 | static size_t result_len = 0; | |
d2e4a39e | 7849 | char *tmp; |
14f9c5c9 | 7850 | |
4c4b4cd2 PH |
7851 | /* First, unqualify the enumeration name: |
7852 | 1. Search for the last '.' character. If we find one, then skip | |
76a01679 JB |
7853 | all the preceeding characters, the unqualified name starts |
7854 | right after that dot. | |
4c4b4cd2 | 7855 | 2. Otherwise, we may be debugging on a target where the compiler |
76a01679 JB |
7856 | translates dots into "__". Search forward for double underscores, |
7857 | but stop searching when we hit an overloading suffix, which is | |
7858 | of the form "__" followed by digits. */ | |
4c4b4cd2 | 7859 | |
c3e5cd34 PH |
7860 | tmp = strrchr (name, '.'); |
7861 | if (tmp != NULL) | |
4c4b4cd2 PH |
7862 | name = tmp + 1; |
7863 | else | |
14f9c5c9 | 7864 | { |
4c4b4cd2 PH |
7865 | while ((tmp = strstr (name, "__")) != NULL) |
7866 | { | |
7867 | if (isdigit (tmp[2])) | |
7868 | break; | |
7869 | else | |
7870 | name = tmp + 2; | |
7871 | } | |
14f9c5c9 AS |
7872 | } |
7873 | ||
7874 | if (name[0] == 'Q') | |
7875 | { | |
14f9c5c9 AS |
7876 | int v; |
7877 | if (name[1] == 'U' || name[1] == 'W') | |
4c4b4cd2 PH |
7878 | { |
7879 | if (sscanf (name + 2, "%x", &v) != 1) | |
7880 | return name; | |
7881 | } | |
14f9c5c9 | 7882 | else |
4c4b4cd2 | 7883 | return name; |
14f9c5c9 | 7884 | |
4c4b4cd2 | 7885 | GROW_VECT (result, result_len, 16); |
14f9c5c9 | 7886 | if (isascii (v) && isprint (v)) |
4c4b4cd2 | 7887 | sprintf (result, "'%c'", v); |
14f9c5c9 | 7888 | else if (name[1] == 'U') |
4c4b4cd2 | 7889 | sprintf (result, "[\"%02x\"]", v); |
14f9c5c9 | 7890 | else |
4c4b4cd2 | 7891 | sprintf (result, "[\"%04x\"]", v); |
14f9c5c9 AS |
7892 | |
7893 | return result; | |
7894 | } | |
d2e4a39e | 7895 | else |
4c4b4cd2 | 7896 | { |
c3e5cd34 PH |
7897 | tmp = strstr (name, "__"); |
7898 | if (tmp == NULL) | |
7899 | tmp = strstr (name, "$"); | |
7900 | if (tmp != NULL) | |
4c4b4cd2 PH |
7901 | { |
7902 | GROW_VECT (result, result_len, tmp - name + 1); | |
7903 | strncpy (result, name, tmp - name); | |
7904 | result[tmp - name] = '\0'; | |
7905 | return result; | |
7906 | } | |
7907 | ||
7908 | return name; | |
7909 | } | |
14f9c5c9 AS |
7910 | } |
7911 | ||
d2e4a39e | 7912 | static struct value * |
ebf56fd3 | 7913 | evaluate_subexp (struct type *expect_type, struct expression *exp, int *pos, |
4c4b4cd2 | 7914 | enum noside noside) |
14f9c5c9 | 7915 | { |
76a01679 | 7916 | return (*exp->language_defn->la_exp_desc->evaluate_exp) |
4c4b4cd2 | 7917 | (expect_type, exp, pos, noside); |
14f9c5c9 AS |
7918 | } |
7919 | ||
7920 | /* Evaluate the subexpression of EXP starting at *POS as for | |
7921 | evaluate_type, updating *POS to point just past the evaluated | |
4c4b4cd2 | 7922 | expression. */ |
14f9c5c9 | 7923 | |
d2e4a39e AS |
7924 | static struct value * |
7925 | evaluate_subexp_type (struct expression *exp, int *pos) | |
14f9c5c9 | 7926 | { |
4c4b4cd2 | 7927 | return (*exp->language_defn->la_exp_desc->evaluate_exp) |
14f9c5c9 AS |
7928 | (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); |
7929 | } | |
7930 | ||
7931 | /* If VAL is wrapped in an aligner or subtype wrapper, return the | |
4c4b4cd2 | 7932 | value it wraps. */ |
14f9c5c9 | 7933 | |
d2e4a39e AS |
7934 | static struct value * |
7935 | unwrap_value (struct value *val) | |
14f9c5c9 | 7936 | { |
df407dfe | 7937 | struct type *type = ada_check_typedef (value_type (val)); |
14f9c5c9 AS |
7938 | if (ada_is_aligner_type (type)) |
7939 | { | |
de4d072f | 7940 | struct value *v = ada_value_struct_elt (val, "F", 0); |
df407dfe | 7941 | struct type *val_type = ada_check_typedef (value_type (v)); |
14f9c5c9 | 7942 | if (ada_type_name (val_type) == NULL) |
4c4b4cd2 | 7943 | TYPE_NAME (val_type) = ada_type_name (type); |
14f9c5c9 AS |
7944 | |
7945 | return unwrap_value (v); | |
7946 | } | |
d2e4a39e | 7947 | else |
14f9c5c9 | 7948 | { |
d2e4a39e | 7949 | struct type *raw_real_type = |
61ee279c | 7950 | ada_check_typedef (ada_get_base_type (type)); |
d2e4a39e | 7951 | |
14f9c5c9 | 7952 | if (type == raw_real_type) |
4c4b4cd2 | 7953 | return val; |
14f9c5c9 | 7954 | |
d2e4a39e | 7955 | return |
4c4b4cd2 PH |
7956 | coerce_unspec_val_to_type |
7957 | (val, ada_to_fixed_type (raw_real_type, 0, | |
df407dfe | 7958 | VALUE_ADDRESS (val) + value_offset (val), |
1ed6ede0 | 7959 | NULL, 1)); |
14f9c5c9 AS |
7960 | } |
7961 | } | |
d2e4a39e AS |
7962 | |
7963 | static struct value * | |
7964 | cast_to_fixed (struct type *type, struct value *arg) | |
14f9c5c9 AS |
7965 | { |
7966 | LONGEST val; | |
7967 | ||
df407dfe | 7968 | if (type == value_type (arg)) |
14f9c5c9 | 7969 | return arg; |
df407dfe | 7970 | else if (ada_is_fixed_point_type (value_type (arg))) |
d2e4a39e | 7971 | val = ada_float_to_fixed (type, |
df407dfe | 7972 | ada_fixed_to_float (value_type (arg), |
4c4b4cd2 | 7973 | value_as_long (arg))); |
d2e4a39e | 7974 | else |
14f9c5c9 | 7975 | { |
d2e4a39e | 7976 | DOUBLEST argd = |
4c4b4cd2 | 7977 | value_as_double (value_cast (builtin_type_double, value_copy (arg))); |
14f9c5c9 AS |
7978 | val = ada_float_to_fixed (type, argd); |
7979 | } | |
7980 | ||
7981 | return value_from_longest (type, val); | |
7982 | } | |
7983 | ||
d2e4a39e AS |
7984 | static struct value * |
7985 | cast_from_fixed_to_double (struct value *arg) | |
14f9c5c9 | 7986 | { |
df407dfe | 7987 | DOUBLEST val = ada_fixed_to_float (value_type (arg), |
4c4b4cd2 | 7988 | value_as_long (arg)); |
14f9c5c9 AS |
7989 | return value_from_double (builtin_type_double, val); |
7990 | } | |
7991 | ||
4c4b4cd2 PH |
7992 | /* Coerce VAL as necessary for assignment to an lval of type TYPE, and |
7993 | return the converted value. */ | |
7994 | ||
d2e4a39e AS |
7995 | static struct value * |
7996 | coerce_for_assign (struct type *type, struct value *val) | |
14f9c5c9 | 7997 | { |
df407dfe | 7998 | struct type *type2 = value_type (val); |
14f9c5c9 AS |
7999 | if (type == type2) |
8000 | return val; | |
8001 | ||
61ee279c PH |
8002 | type2 = ada_check_typedef (type2); |
8003 | type = ada_check_typedef (type); | |
14f9c5c9 | 8004 | |
d2e4a39e AS |
8005 | if (TYPE_CODE (type2) == TYPE_CODE_PTR |
8006 | && TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
14f9c5c9 AS |
8007 | { |
8008 | val = ada_value_ind (val); | |
df407dfe | 8009 | type2 = value_type (val); |
14f9c5c9 AS |
8010 | } |
8011 | ||
d2e4a39e | 8012 | if (TYPE_CODE (type2) == TYPE_CODE_ARRAY |
14f9c5c9 AS |
8013 | && TYPE_CODE (type) == TYPE_CODE_ARRAY) |
8014 | { | |
8015 | if (TYPE_LENGTH (type2) != TYPE_LENGTH (type) | |
4c4b4cd2 PH |
8016 | || TYPE_LENGTH (TYPE_TARGET_TYPE (type2)) |
8017 | != TYPE_LENGTH (TYPE_TARGET_TYPE (type2))) | |
323e0a4a | 8018 | error (_("Incompatible types in assignment")); |
04624583 | 8019 | deprecated_set_value_type (val, type); |
14f9c5c9 | 8020 | } |
d2e4a39e | 8021 | return val; |
14f9c5c9 AS |
8022 | } |
8023 | ||
4c4b4cd2 PH |
8024 | static struct value * |
8025 | ada_value_binop (struct value *arg1, struct value *arg2, enum exp_opcode op) | |
8026 | { | |
8027 | struct value *val; | |
8028 | struct type *type1, *type2; | |
8029 | LONGEST v, v1, v2; | |
8030 | ||
994b9211 AC |
8031 | arg1 = coerce_ref (arg1); |
8032 | arg2 = coerce_ref (arg2); | |
df407dfe AC |
8033 | type1 = base_type (ada_check_typedef (value_type (arg1))); |
8034 | type2 = base_type (ada_check_typedef (value_type (arg2))); | |
4c4b4cd2 | 8035 | |
76a01679 JB |
8036 | if (TYPE_CODE (type1) != TYPE_CODE_INT |
8037 | || TYPE_CODE (type2) != TYPE_CODE_INT) | |
4c4b4cd2 PH |
8038 | return value_binop (arg1, arg2, op); |
8039 | ||
76a01679 | 8040 | switch (op) |
4c4b4cd2 PH |
8041 | { |
8042 | case BINOP_MOD: | |
8043 | case BINOP_DIV: | |
8044 | case BINOP_REM: | |
8045 | break; | |
8046 | default: | |
8047 | return value_binop (arg1, arg2, op); | |
8048 | } | |
8049 | ||
8050 | v2 = value_as_long (arg2); | |
8051 | if (v2 == 0) | |
323e0a4a | 8052 | error (_("second operand of %s must not be zero."), op_string (op)); |
4c4b4cd2 PH |
8053 | |
8054 | if (TYPE_UNSIGNED (type1) || op == BINOP_MOD) | |
8055 | return value_binop (arg1, arg2, op); | |
8056 | ||
8057 | v1 = value_as_long (arg1); | |
8058 | switch (op) | |
8059 | { | |
8060 | case BINOP_DIV: | |
8061 | v = v1 / v2; | |
76a01679 JB |
8062 | if (!TRUNCATION_TOWARDS_ZERO && v1 * (v1 % v2) < 0) |
8063 | v += v > 0 ? -1 : 1; | |
4c4b4cd2 PH |
8064 | break; |
8065 | case BINOP_REM: | |
8066 | v = v1 % v2; | |
76a01679 JB |
8067 | if (v * v1 < 0) |
8068 | v -= v2; | |
4c4b4cd2 PH |
8069 | break; |
8070 | default: | |
8071 | /* Should not reach this point. */ | |
8072 | v = 0; | |
8073 | } | |
8074 | ||
8075 | val = allocate_value (type1); | |
990a07ab | 8076 | store_unsigned_integer (value_contents_raw (val), |
df407dfe | 8077 | TYPE_LENGTH (value_type (val)), v); |
4c4b4cd2 PH |
8078 | return val; |
8079 | } | |
8080 | ||
8081 | static int | |
8082 | ada_value_equal (struct value *arg1, struct value *arg2) | |
8083 | { | |
df407dfe AC |
8084 | if (ada_is_direct_array_type (value_type (arg1)) |
8085 | || ada_is_direct_array_type (value_type (arg2))) | |
4c4b4cd2 | 8086 | { |
f58b38bf JB |
8087 | /* Automatically dereference any array reference before |
8088 | we attempt to perform the comparison. */ | |
8089 | arg1 = ada_coerce_ref (arg1); | |
8090 | arg2 = ada_coerce_ref (arg2); | |
8091 | ||
4c4b4cd2 PH |
8092 | arg1 = ada_coerce_to_simple_array (arg1); |
8093 | arg2 = ada_coerce_to_simple_array (arg2); | |
df407dfe AC |
8094 | if (TYPE_CODE (value_type (arg1)) != TYPE_CODE_ARRAY |
8095 | || TYPE_CODE (value_type (arg2)) != TYPE_CODE_ARRAY) | |
323e0a4a | 8096 | error (_("Attempt to compare array with non-array")); |
4c4b4cd2 | 8097 | /* FIXME: The following works only for types whose |
76a01679 JB |
8098 | representations use all bits (no padding or undefined bits) |
8099 | and do not have user-defined equality. */ | |
8100 | return | |
df407dfe | 8101 | TYPE_LENGTH (value_type (arg1)) == TYPE_LENGTH (value_type (arg2)) |
0fd88904 | 8102 | && memcmp (value_contents (arg1), value_contents (arg2), |
df407dfe | 8103 | TYPE_LENGTH (value_type (arg1))) == 0; |
4c4b4cd2 PH |
8104 | } |
8105 | return value_equal (arg1, arg2); | |
8106 | } | |
8107 | ||
52ce6436 PH |
8108 | /* Total number of component associations in the aggregate starting at |
8109 | index PC in EXP. Assumes that index PC is the start of an | |
8110 | OP_AGGREGATE. */ | |
8111 | ||
8112 | static int | |
8113 | num_component_specs (struct expression *exp, int pc) | |
8114 | { | |
8115 | int n, m, i; | |
8116 | m = exp->elts[pc + 1].longconst; | |
8117 | pc += 3; | |
8118 | n = 0; | |
8119 | for (i = 0; i < m; i += 1) | |
8120 | { | |
8121 | switch (exp->elts[pc].opcode) | |
8122 | { | |
8123 | default: | |
8124 | n += 1; | |
8125 | break; | |
8126 | case OP_CHOICES: | |
8127 | n += exp->elts[pc + 1].longconst; | |
8128 | break; | |
8129 | } | |
8130 | ada_evaluate_subexp (NULL, exp, &pc, EVAL_SKIP); | |
8131 | } | |
8132 | return n; | |
8133 | } | |
8134 | ||
8135 | /* Assign the result of evaluating EXP starting at *POS to the INDEXth | |
8136 | component of LHS (a simple array or a record), updating *POS past | |
8137 | the expression, assuming that LHS is contained in CONTAINER. Does | |
8138 | not modify the inferior's memory, nor does it modify LHS (unless | |
8139 | LHS == CONTAINER). */ | |
8140 | ||
8141 | static void | |
8142 | assign_component (struct value *container, struct value *lhs, LONGEST index, | |
8143 | struct expression *exp, int *pos) | |
8144 | { | |
8145 | struct value *mark = value_mark (); | |
8146 | struct value *elt; | |
8147 | if (TYPE_CODE (value_type (lhs)) == TYPE_CODE_ARRAY) | |
8148 | { | |
8149 | struct value *index_val = value_from_longest (builtin_type_int, index); | |
8150 | elt = unwrap_value (ada_value_subscript (lhs, 1, &index_val)); | |
8151 | } | |
8152 | else | |
8153 | { | |
8154 | elt = ada_index_struct_field (index, lhs, 0, value_type (lhs)); | |
8155 | elt = ada_to_fixed_value (unwrap_value (elt)); | |
8156 | } | |
8157 | ||
8158 | if (exp->elts[*pos].opcode == OP_AGGREGATE) | |
8159 | assign_aggregate (container, elt, exp, pos, EVAL_NORMAL); | |
8160 | else | |
8161 | value_assign_to_component (container, elt, | |
8162 | ada_evaluate_subexp (NULL, exp, pos, | |
8163 | EVAL_NORMAL)); | |
8164 | ||
8165 | value_free_to_mark (mark); | |
8166 | } | |
8167 | ||
8168 | /* Assuming that LHS represents an lvalue having a record or array | |
8169 | type, and EXP->ELTS[*POS] is an OP_AGGREGATE, evaluate an assignment | |
8170 | of that aggregate's value to LHS, advancing *POS past the | |
8171 | aggregate. NOSIDE is as for evaluate_subexp. CONTAINER is an | |
8172 | lvalue containing LHS (possibly LHS itself). Does not modify | |
8173 | the inferior's memory, nor does it modify the contents of | |
8174 | LHS (unless == CONTAINER). Returns the modified CONTAINER. */ | |
8175 | ||
8176 | static struct value * | |
8177 | assign_aggregate (struct value *container, | |
8178 | struct value *lhs, struct expression *exp, | |
8179 | int *pos, enum noside noside) | |
8180 | { | |
8181 | struct type *lhs_type; | |
8182 | int n = exp->elts[*pos+1].longconst; | |
8183 | LONGEST low_index, high_index; | |
8184 | int num_specs; | |
8185 | LONGEST *indices; | |
8186 | int max_indices, num_indices; | |
8187 | int is_array_aggregate; | |
8188 | int i; | |
8189 | struct value *mark = value_mark (); | |
8190 | ||
8191 | *pos += 3; | |
8192 | if (noside != EVAL_NORMAL) | |
8193 | { | |
8194 | int i; | |
8195 | for (i = 0; i < n; i += 1) | |
8196 | ada_evaluate_subexp (NULL, exp, pos, noside); | |
8197 | return container; | |
8198 | } | |
8199 | ||
8200 | container = ada_coerce_ref (container); | |
8201 | if (ada_is_direct_array_type (value_type (container))) | |
8202 | container = ada_coerce_to_simple_array (container); | |
8203 | lhs = ada_coerce_ref (lhs); | |
8204 | if (!deprecated_value_modifiable (lhs)) | |
8205 | error (_("Left operand of assignment is not a modifiable lvalue.")); | |
8206 | ||
8207 | lhs_type = value_type (lhs); | |
8208 | if (ada_is_direct_array_type (lhs_type)) | |
8209 | { | |
8210 | lhs = ada_coerce_to_simple_array (lhs); | |
8211 | lhs_type = value_type (lhs); | |
8212 | low_index = TYPE_ARRAY_LOWER_BOUND_VALUE (lhs_type); | |
8213 | high_index = TYPE_ARRAY_UPPER_BOUND_VALUE (lhs_type); | |
8214 | is_array_aggregate = 1; | |
8215 | } | |
8216 | else if (TYPE_CODE (lhs_type) == TYPE_CODE_STRUCT) | |
8217 | { | |
8218 | low_index = 0; | |
8219 | high_index = num_visible_fields (lhs_type) - 1; | |
8220 | is_array_aggregate = 0; | |
8221 | } | |
8222 | else | |
8223 | error (_("Left-hand side must be array or record.")); | |
8224 | ||
8225 | num_specs = num_component_specs (exp, *pos - 3); | |
8226 | max_indices = 4 * num_specs + 4; | |
8227 | indices = alloca (max_indices * sizeof (indices[0])); | |
8228 | indices[0] = indices[1] = low_index - 1; | |
8229 | indices[2] = indices[3] = high_index + 1; | |
8230 | num_indices = 4; | |
8231 | ||
8232 | for (i = 0; i < n; i += 1) | |
8233 | { | |
8234 | switch (exp->elts[*pos].opcode) | |
8235 | { | |
8236 | case OP_CHOICES: | |
8237 | aggregate_assign_from_choices (container, lhs, exp, pos, indices, | |
8238 | &num_indices, max_indices, | |
8239 | low_index, high_index); | |
8240 | break; | |
8241 | case OP_POSITIONAL: | |
8242 | aggregate_assign_positional (container, lhs, exp, pos, indices, | |
8243 | &num_indices, max_indices, | |
8244 | low_index, high_index); | |
8245 | break; | |
8246 | case OP_OTHERS: | |
8247 | if (i != n-1) | |
8248 | error (_("Misplaced 'others' clause")); | |
8249 | aggregate_assign_others (container, lhs, exp, pos, indices, | |
8250 | num_indices, low_index, high_index); | |
8251 | break; | |
8252 | default: | |
8253 | error (_("Internal error: bad aggregate clause")); | |
8254 | } | |
8255 | } | |
8256 | ||
8257 | return container; | |
8258 | } | |
8259 | ||
8260 | /* Assign into the component of LHS indexed by the OP_POSITIONAL | |
8261 | construct at *POS, updating *POS past the construct, given that | |
8262 | the positions are relative to lower bound LOW, where HIGH is the | |
8263 | upper bound. Record the position in INDICES[0 .. MAX_INDICES-1] | |
8264 | updating *NUM_INDICES as needed. CONTAINER is as for | |
8265 | assign_aggregate. */ | |
8266 | static void | |
8267 | aggregate_assign_positional (struct value *container, | |
8268 | struct value *lhs, struct expression *exp, | |
8269 | int *pos, LONGEST *indices, int *num_indices, | |
8270 | int max_indices, LONGEST low, LONGEST high) | |
8271 | { | |
8272 | LONGEST ind = longest_to_int (exp->elts[*pos + 1].longconst) + low; | |
8273 | ||
8274 | if (ind - 1 == high) | |
e1d5a0d2 | 8275 | warning (_("Extra components in aggregate ignored.")); |
52ce6436 PH |
8276 | if (ind <= high) |
8277 | { | |
8278 | add_component_interval (ind, ind, indices, num_indices, max_indices); | |
8279 | *pos += 3; | |
8280 | assign_component (container, lhs, ind, exp, pos); | |
8281 | } | |
8282 | else | |
8283 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
8284 | } | |
8285 | ||
8286 | /* Assign into the components of LHS indexed by the OP_CHOICES | |
8287 | construct at *POS, updating *POS past the construct, given that | |
8288 | the allowable indices are LOW..HIGH. Record the indices assigned | |
8289 | to in INDICES[0 .. MAX_INDICES-1], updating *NUM_INDICES as | |
8290 | needed. CONTAINER is as for assign_aggregate. */ | |
8291 | static void | |
8292 | aggregate_assign_from_choices (struct value *container, | |
8293 | struct value *lhs, struct expression *exp, | |
8294 | int *pos, LONGEST *indices, int *num_indices, | |
8295 | int max_indices, LONGEST low, LONGEST high) | |
8296 | { | |
8297 | int j; | |
8298 | int n_choices = longest_to_int (exp->elts[*pos+1].longconst); | |
8299 | int choice_pos, expr_pc; | |
8300 | int is_array = ada_is_direct_array_type (value_type (lhs)); | |
8301 | ||
8302 | choice_pos = *pos += 3; | |
8303 | ||
8304 | for (j = 0; j < n_choices; j += 1) | |
8305 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
8306 | expr_pc = *pos; | |
8307 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
8308 | ||
8309 | for (j = 0; j < n_choices; j += 1) | |
8310 | { | |
8311 | LONGEST lower, upper; | |
8312 | enum exp_opcode op = exp->elts[choice_pos].opcode; | |
8313 | if (op == OP_DISCRETE_RANGE) | |
8314 | { | |
8315 | choice_pos += 1; | |
8316 | lower = value_as_long (ada_evaluate_subexp (NULL, exp, pos, | |
8317 | EVAL_NORMAL)); | |
8318 | upper = value_as_long (ada_evaluate_subexp (NULL, exp, pos, | |
8319 | EVAL_NORMAL)); | |
8320 | } | |
8321 | else if (is_array) | |
8322 | { | |
8323 | lower = value_as_long (ada_evaluate_subexp (NULL, exp, &choice_pos, | |
8324 | EVAL_NORMAL)); | |
8325 | upper = lower; | |
8326 | } | |
8327 | else | |
8328 | { | |
8329 | int ind; | |
8330 | char *name; | |
8331 | switch (op) | |
8332 | { | |
8333 | case OP_NAME: | |
8334 | name = &exp->elts[choice_pos + 2].string; | |
8335 | break; | |
8336 | case OP_VAR_VALUE: | |
8337 | name = SYMBOL_NATURAL_NAME (exp->elts[choice_pos + 2].symbol); | |
8338 | break; | |
8339 | default: | |
8340 | error (_("Invalid record component association.")); | |
8341 | } | |
8342 | ada_evaluate_subexp (NULL, exp, &choice_pos, EVAL_SKIP); | |
8343 | ind = 0; | |
8344 | if (! find_struct_field (name, value_type (lhs), 0, | |
8345 | NULL, NULL, NULL, NULL, &ind)) | |
8346 | error (_("Unknown component name: %s."), name); | |
8347 | lower = upper = ind; | |
8348 | } | |
8349 | ||
8350 | if (lower <= upper && (lower < low || upper > high)) | |
8351 | error (_("Index in component association out of bounds.")); | |
8352 | ||
8353 | add_component_interval (lower, upper, indices, num_indices, | |
8354 | max_indices); | |
8355 | while (lower <= upper) | |
8356 | { | |
8357 | int pos1; | |
8358 | pos1 = expr_pc; | |
8359 | assign_component (container, lhs, lower, exp, &pos1); | |
8360 | lower += 1; | |
8361 | } | |
8362 | } | |
8363 | } | |
8364 | ||
8365 | /* Assign the value of the expression in the OP_OTHERS construct in | |
8366 | EXP at *POS into the components of LHS indexed from LOW .. HIGH that | |
8367 | have not been previously assigned. The index intervals already assigned | |
8368 | are in INDICES[0 .. NUM_INDICES-1]. Updates *POS to after the | |
8369 | OP_OTHERS clause. CONTAINER is as for assign_aggregate*/ | |
8370 | static void | |
8371 | aggregate_assign_others (struct value *container, | |
8372 | struct value *lhs, struct expression *exp, | |
8373 | int *pos, LONGEST *indices, int num_indices, | |
8374 | LONGEST low, LONGEST high) | |
8375 | { | |
8376 | int i; | |
8377 | int expr_pc = *pos+1; | |
8378 | ||
8379 | for (i = 0; i < num_indices - 2; i += 2) | |
8380 | { | |
8381 | LONGEST ind; | |
8382 | for (ind = indices[i + 1] + 1; ind < indices[i + 2]; ind += 1) | |
8383 | { | |
8384 | int pos; | |
8385 | pos = expr_pc; | |
8386 | assign_component (container, lhs, ind, exp, &pos); | |
8387 | } | |
8388 | } | |
8389 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
8390 | } | |
8391 | ||
8392 | /* Add the interval [LOW .. HIGH] to the sorted set of intervals | |
8393 | [ INDICES[0] .. INDICES[1] ],..., [ INDICES[*SIZE-2] .. INDICES[*SIZE-1] ], | |
8394 | modifying *SIZE as needed. It is an error if *SIZE exceeds | |
8395 | MAX_SIZE. The resulting intervals do not overlap. */ | |
8396 | static void | |
8397 | add_component_interval (LONGEST low, LONGEST high, | |
8398 | LONGEST* indices, int *size, int max_size) | |
8399 | { | |
8400 | int i, j; | |
8401 | for (i = 0; i < *size; i += 2) { | |
8402 | if (high >= indices[i] && low <= indices[i + 1]) | |
8403 | { | |
8404 | int kh; | |
8405 | for (kh = i + 2; kh < *size; kh += 2) | |
8406 | if (high < indices[kh]) | |
8407 | break; | |
8408 | if (low < indices[i]) | |
8409 | indices[i] = low; | |
8410 | indices[i + 1] = indices[kh - 1]; | |
8411 | if (high > indices[i + 1]) | |
8412 | indices[i + 1] = high; | |
8413 | memcpy (indices + i + 2, indices + kh, *size - kh); | |
8414 | *size -= kh - i - 2; | |
8415 | return; | |
8416 | } | |
8417 | else if (high < indices[i]) | |
8418 | break; | |
8419 | } | |
8420 | ||
8421 | if (*size == max_size) | |
8422 | error (_("Internal error: miscounted aggregate components.")); | |
8423 | *size += 2; | |
8424 | for (j = *size-1; j >= i+2; j -= 1) | |
8425 | indices[j] = indices[j - 2]; | |
8426 | indices[i] = low; | |
8427 | indices[i + 1] = high; | |
8428 | } | |
8429 | ||
6e48bd2c JB |
8430 | /* Perform and Ada cast of ARG2 to type TYPE if the type of ARG2 |
8431 | is different. */ | |
8432 | ||
8433 | static struct value * | |
8434 | ada_value_cast (struct type *type, struct value *arg2, enum noside noside) | |
8435 | { | |
8436 | if (type == ada_check_typedef (value_type (arg2))) | |
8437 | return arg2; | |
8438 | ||
8439 | if (ada_is_fixed_point_type (type)) | |
8440 | return (cast_to_fixed (type, arg2)); | |
8441 | ||
8442 | if (ada_is_fixed_point_type (value_type (arg2))) | |
8443 | return value_cast (type, cast_from_fixed_to_double (arg2)); | |
8444 | ||
8445 | return value_cast (type, arg2); | |
8446 | } | |
8447 | ||
52ce6436 | 8448 | static struct value * |
ebf56fd3 | 8449 | ada_evaluate_subexp (struct type *expect_type, struct expression *exp, |
4c4b4cd2 | 8450 | int *pos, enum noside noside) |
14f9c5c9 AS |
8451 | { |
8452 | enum exp_opcode op; | |
14f9c5c9 AS |
8453 | int tem, tem2, tem3; |
8454 | int pc; | |
8455 | struct value *arg1 = NULL, *arg2 = NULL, *arg3; | |
8456 | struct type *type; | |
52ce6436 | 8457 | int nargs, oplen; |
d2e4a39e | 8458 | struct value **argvec; |
14f9c5c9 | 8459 | |
d2e4a39e AS |
8460 | pc = *pos; |
8461 | *pos += 1; | |
14f9c5c9 AS |
8462 | op = exp->elts[pc].opcode; |
8463 | ||
d2e4a39e | 8464 | switch (op) |
14f9c5c9 AS |
8465 | { |
8466 | default: | |
8467 | *pos -= 1; | |
6e48bd2c JB |
8468 | arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside); |
8469 | arg1 = unwrap_value (arg1); | |
8470 | ||
8471 | /* If evaluating an OP_DOUBLE and an EXPECT_TYPE was provided, | |
8472 | then we need to perform the conversion manually, because | |
8473 | evaluate_subexp_standard doesn't do it. This conversion is | |
8474 | necessary in Ada because the different kinds of float/fixed | |
8475 | types in Ada have different representations. | |
8476 | ||
8477 | Similarly, we need to perform the conversion from OP_LONG | |
8478 | ourselves. */ | |
8479 | if ((op == OP_DOUBLE || op == OP_LONG) && expect_type != NULL) | |
8480 | arg1 = ada_value_cast (expect_type, arg1, noside); | |
8481 | ||
8482 | return arg1; | |
4c4b4cd2 PH |
8483 | |
8484 | case OP_STRING: | |
8485 | { | |
76a01679 JB |
8486 | struct value *result; |
8487 | *pos -= 1; | |
8488 | result = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
8489 | /* The result type will have code OP_STRING, bashed there from | |
8490 | OP_ARRAY. Bash it back. */ | |
df407dfe AC |
8491 | if (TYPE_CODE (value_type (result)) == TYPE_CODE_STRING) |
8492 | TYPE_CODE (value_type (result)) = TYPE_CODE_ARRAY; | |
76a01679 | 8493 | return result; |
4c4b4cd2 | 8494 | } |
14f9c5c9 AS |
8495 | |
8496 | case UNOP_CAST: | |
8497 | (*pos) += 2; | |
8498 | type = exp->elts[pc + 1].type; | |
8499 | arg1 = evaluate_subexp (type, exp, pos, noside); | |
8500 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 8501 | goto nosideret; |
6e48bd2c | 8502 | arg1 = ada_value_cast (type, arg1, noside); |
14f9c5c9 AS |
8503 | return arg1; |
8504 | ||
4c4b4cd2 PH |
8505 | case UNOP_QUAL: |
8506 | (*pos) += 2; | |
8507 | type = exp->elts[pc + 1].type; | |
8508 | return ada_evaluate_subexp (type, exp, pos, noside); | |
8509 | ||
14f9c5c9 AS |
8510 | case BINOP_ASSIGN: |
8511 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
52ce6436 PH |
8512 | if (exp->elts[*pos].opcode == OP_AGGREGATE) |
8513 | { | |
8514 | arg1 = assign_aggregate (arg1, arg1, exp, pos, noside); | |
8515 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) | |
8516 | return arg1; | |
8517 | return ada_value_assign (arg1, arg1); | |
8518 | } | |
003f3813 JB |
8519 | /* Force the evaluation of the rhs ARG2 to the type of the lhs ARG1, |
8520 | except if the lhs of our assignment is a convenience variable. | |
8521 | In the case of assigning to a convenience variable, the lhs | |
8522 | should be exactly the result of the evaluation of the rhs. */ | |
8523 | type = value_type (arg1); | |
8524 | if (VALUE_LVAL (arg1) == lval_internalvar) | |
8525 | type = NULL; | |
8526 | arg2 = evaluate_subexp (type, exp, pos, noside); | |
14f9c5c9 | 8527 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 | 8528 | return arg1; |
df407dfe AC |
8529 | if (ada_is_fixed_point_type (value_type (arg1))) |
8530 | arg2 = cast_to_fixed (value_type (arg1), arg2); | |
8531 | else if (ada_is_fixed_point_type (value_type (arg2))) | |
76a01679 | 8532 | error |
323e0a4a | 8533 | (_("Fixed-point values must be assigned to fixed-point variables")); |
d2e4a39e | 8534 | else |
df407dfe | 8535 | arg2 = coerce_for_assign (value_type (arg1), arg2); |
4c4b4cd2 | 8536 | return ada_value_assign (arg1, arg2); |
14f9c5c9 AS |
8537 | |
8538 | case BINOP_ADD: | |
8539 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
8540 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
8541 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 8542 | goto nosideret; |
df407dfe AC |
8543 | if ((ada_is_fixed_point_type (value_type (arg1)) |
8544 | || ada_is_fixed_point_type (value_type (arg2))) | |
8545 | && value_type (arg1) != value_type (arg2)) | |
323e0a4a | 8546 | error (_("Operands of fixed-point addition must have the same type")); |
b7789565 JB |
8547 | /* Do the addition, and cast the result to the type of the first |
8548 | argument. We cannot cast the result to a reference type, so if | |
8549 | ARG1 is a reference type, find its underlying type. */ | |
8550 | type = value_type (arg1); | |
8551 | while (TYPE_CODE (type) == TYPE_CODE_REF) | |
8552 | type = TYPE_TARGET_TYPE (type); | |
8553 | return value_cast (type, value_add (arg1, arg2)); | |
14f9c5c9 AS |
8554 | |
8555 | case BINOP_SUB: | |
8556 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
8557 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
8558 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 8559 | goto nosideret; |
df407dfe AC |
8560 | if ((ada_is_fixed_point_type (value_type (arg1)) |
8561 | || ada_is_fixed_point_type (value_type (arg2))) | |
8562 | && value_type (arg1) != value_type (arg2)) | |
323e0a4a | 8563 | error (_("Operands of fixed-point subtraction must have the same type")); |
b7789565 JB |
8564 | /* Do the substraction, and cast the result to the type of the first |
8565 | argument. We cannot cast the result to a reference type, so if | |
8566 | ARG1 is a reference type, find its underlying type. */ | |
8567 | type = value_type (arg1); | |
8568 | while (TYPE_CODE (type) == TYPE_CODE_REF) | |
8569 | type = TYPE_TARGET_TYPE (type); | |
8570 | return value_cast (type, value_sub (arg1, arg2)); | |
14f9c5c9 AS |
8571 | |
8572 | case BINOP_MUL: | |
8573 | case BINOP_DIV: | |
8574 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8575 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8576 | if (noside == EVAL_SKIP) | |
4c4b4cd2 PH |
8577 | goto nosideret; |
8578 | else if (noside == EVAL_AVOID_SIDE_EFFECTS | |
76a01679 | 8579 | && (op == BINOP_DIV || op == BINOP_REM || op == BINOP_MOD)) |
df407dfe | 8580 | return value_zero (value_type (arg1), not_lval); |
14f9c5c9 | 8581 | else |
4c4b4cd2 | 8582 | { |
df407dfe | 8583 | if (ada_is_fixed_point_type (value_type (arg1))) |
4c4b4cd2 | 8584 | arg1 = cast_from_fixed_to_double (arg1); |
df407dfe | 8585 | if (ada_is_fixed_point_type (value_type (arg2))) |
4c4b4cd2 PH |
8586 | arg2 = cast_from_fixed_to_double (arg2); |
8587 | return ada_value_binop (arg1, arg2, op); | |
8588 | } | |
8589 | ||
8590 | case BINOP_REM: | |
8591 | case BINOP_MOD: | |
8592 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8593 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8594 | if (noside == EVAL_SKIP) | |
76a01679 | 8595 | goto nosideret; |
4c4b4cd2 | 8596 | else if (noside == EVAL_AVOID_SIDE_EFFECTS |
76a01679 | 8597 | && (op == BINOP_DIV || op == BINOP_REM || op == BINOP_MOD)) |
df407dfe | 8598 | return value_zero (value_type (arg1), not_lval); |
14f9c5c9 | 8599 | else |
76a01679 | 8600 | return ada_value_binop (arg1, arg2, op); |
14f9c5c9 | 8601 | |
4c4b4cd2 PH |
8602 | case BINOP_EQUAL: |
8603 | case BINOP_NOTEQUAL: | |
14f9c5c9 | 8604 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
df407dfe | 8605 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
14f9c5c9 | 8606 | if (noside == EVAL_SKIP) |
76a01679 | 8607 | goto nosideret; |
4c4b4cd2 | 8608 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 8609 | tem = 0; |
4c4b4cd2 | 8610 | else |
76a01679 | 8611 | tem = ada_value_equal (arg1, arg2); |
4c4b4cd2 | 8612 | if (op == BINOP_NOTEQUAL) |
76a01679 | 8613 | tem = !tem; |
4c4b4cd2 PH |
8614 | return value_from_longest (LA_BOOL_TYPE, (LONGEST) tem); |
8615 | ||
8616 | case UNOP_NEG: | |
8617 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8618 | if (noside == EVAL_SKIP) | |
8619 | goto nosideret; | |
df407dfe AC |
8620 | else if (ada_is_fixed_point_type (value_type (arg1))) |
8621 | return value_cast (value_type (arg1), value_neg (arg1)); | |
14f9c5c9 | 8622 | else |
4c4b4cd2 PH |
8623 | return value_neg (arg1); |
8624 | ||
2330c6c6 JB |
8625 | case BINOP_LOGICAL_AND: |
8626 | case BINOP_LOGICAL_OR: | |
8627 | case UNOP_LOGICAL_NOT: | |
000d5124 JB |
8628 | { |
8629 | struct value *val; | |
8630 | ||
8631 | *pos -= 1; | |
8632 | val = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
8633 | return value_cast (LA_BOOL_TYPE, val); | |
8634 | } | |
2330c6c6 JB |
8635 | |
8636 | case BINOP_BITWISE_AND: | |
8637 | case BINOP_BITWISE_IOR: | |
8638 | case BINOP_BITWISE_XOR: | |
000d5124 JB |
8639 | { |
8640 | struct value *val; | |
8641 | ||
8642 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); | |
8643 | *pos = pc; | |
8644 | val = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
8645 | ||
8646 | return value_cast (value_type (arg1), val); | |
8647 | } | |
2330c6c6 | 8648 | |
14f9c5c9 AS |
8649 | case OP_VAR_VALUE: |
8650 | *pos -= 1; | |
6799def4 JB |
8651 | |
8652 | /* Tagged types are a little special in the fact that the real type | |
8653 | is dynamic and can only be determined by inspecting the object | |
8654 | value. So even if we're support to do an EVAL_AVOID_SIDE_EFFECTS | |
8655 | evaluation, we force an EVAL_NORMAL evaluation for tagged types. */ | |
8656 | if (noside == EVAL_AVOID_SIDE_EFFECTS | |
8657 | && ada_is_tagged_type (SYMBOL_TYPE (exp->elts[pc + 2].symbol), 1)) | |
8658 | noside = EVAL_NORMAL; | |
8659 | ||
14f9c5c9 | 8660 | if (noside == EVAL_SKIP) |
4c4b4cd2 PH |
8661 | { |
8662 | *pos += 4; | |
8663 | goto nosideret; | |
8664 | } | |
8665 | else if (SYMBOL_DOMAIN (exp->elts[pc + 2].symbol) == UNDEF_DOMAIN) | |
76a01679 JB |
8666 | /* Only encountered when an unresolved symbol occurs in a |
8667 | context other than a function call, in which case, it is | |
52ce6436 | 8668 | invalid. */ |
323e0a4a | 8669 | error (_("Unexpected unresolved symbol, %s, during evaluation"), |
4c4b4cd2 | 8670 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
14f9c5c9 | 8671 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 PH |
8672 | { |
8673 | *pos += 4; | |
8674 | return value_zero | |
8675 | (to_static_fixed_type | |
8676 | (static_unwrap_type (SYMBOL_TYPE (exp->elts[pc + 2].symbol))), | |
8677 | not_lval); | |
8678 | } | |
d2e4a39e | 8679 | else |
4c4b4cd2 PH |
8680 | { |
8681 | arg1 = | |
8682 | unwrap_value (evaluate_subexp_standard | |
8683 | (expect_type, exp, pos, noside)); | |
8684 | return ada_to_fixed_value (arg1); | |
8685 | } | |
8686 | ||
8687 | case OP_FUNCALL: | |
8688 | (*pos) += 2; | |
8689 | ||
8690 | /* Allocate arg vector, including space for the function to be | |
8691 | called in argvec[0] and a terminating NULL. */ | |
8692 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
8693 | argvec = | |
8694 | (struct value **) alloca (sizeof (struct value *) * (nargs + 2)); | |
8695 | ||
8696 | if (exp->elts[*pos].opcode == OP_VAR_VALUE | |
76a01679 | 8697 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
323e0a4a | 8698 | error (_("Unexpected unresolved symbol, %s, during evaluation"), |
4c4b4cd2 PH |
8699 | SYMBOL_PRINT_NAME (exp->elts[pc + 5].symbol)); |
8700 | else | |
8701 | { | |
8702 | for (tem = 0; tem <= nargs; tem += 1) | |
8703 | argvec[tem] = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8704 | argvec[tem] = 0; | |
8705 | ||
8706 | if (noside == EVAL_SKIP) | |
8707 | goto nosideret; | |
8708 | } | |
8709 | ||
df407dfe | 8710 | if (ada_is_packed_array_type (desc_base_type (value_type (argvec[0])))) |
4c4b4cd2 | 8711 | argvec[0] = ada_coerce_to_simple_array (argvec[0]); |
df407dfe AC |
8712 | else if (TYPE_CODE (value_type (argvec[0])) == TYPE_CODE_REF |
8713 | || (TYPE_CODE (value_type (argvec[0])) == TYPE_CODE_ARRAY | |
76a01679 | 8714 | && VALUE_LVAL (argvec[0]) == lval_memory)) |
4c4b4cd2 PH |
8715 | argvec[0] = value_addr (argvec[0]); |
8716 | ||
df407dfe | 8717 | type = ada_check_typedef (value_type (argvec[0])); |
4c4b4cd2 PH |
8718 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
8719 | { | |
61ee279c | 8720 | switch (TYPE_CODE (ada_check_typedef (TYPE_TARGET_TYPE (type)))) |
4c4b4cd2 PH |
8721 | { |
8722 | case TYPE_CODE_FUNC: | |
61ee279c | 8723 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
4c4b4cd2 PH |
8724 | break; |
8725 | case TYPE_CODE_ARRAY: | |
8726 | break; | |
8727 | case TYPE_CODE_STRUCT: | |
8728 | if (noside != EVAL_AVOID_SIDE_EFFECTS) | |
8729 | argvec[0] = ada_value_ind (argvec[0]); | |
61ee279c | 8730 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
4c4b4cd2 PH |
8731 | break; |
8732 | default: | |
323e0a4a | 8733 | error (_("cannot subscript or call something of type `%s'"), |
df407dfe | 8734 | ada_type_name (value_type (argvec[0]))); |
4c4b4cd2 PH |
8735 | break; |
8736 | } | |
8737 | } | |
8738 | ||
8739 | switch (TYPE_CODE (type)) | |
8740 | { | |
8741 | case TYPE_CODE_FUNC: | |
8742 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8743 | return allocate_value (TYPE_TARGET_TYPE (type)); | |
8744 | return call_function_by_hand (argvec[0], nargs, argvec + 1); | |
8745 | case TYPE_CODE_STRUCT: | |
8746 | { | |
8747 | int arity; | |
8748 | ||
4c4b4cd2 PH |
8749 | arity = ada_array_arity (type); |
8750 | type = ada_array_element_type (type, nargs); | |
8751 | if (type == NULL) | |
323e0a4a | 8752 | error (_("cannot subscript or call a record")); |
4c4b4cd2 | 8753 | if (arity != nargs) |
323e0a4a | 8754 | error (_("wrong number of subscripts; expecting %d"), arity); |
4c4b4cd2 | 8755 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
0a07e705 | 8756 | return value_zero (ada_aligned_type (type), lval_memory); |
4c4b4cd2 PH |
8757 | return |
8758 | unwrap_value (ada_value_subscript | |
8759 | (argvec[0], nargs, argvec + 1)); | |
8760 | } | |
8761 | case TYPE_CODE_ARRAY: | |
8762 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8763 | { | |
8764 | type = ada_array_element_type (type, nargs); | |
8765 | if (type == NULL) | |
323e0a4a | 8766 | error (_("element type of array unknown")); |
4c4b4cd2 | 8767 | else |
0a07e705 | 8768 | return value_zero (ada_aligned_type (type), lval_memory); |
4c4b4cd2 PH |
8769 | } |
8770 | return | |
8771 | unwrap_value (ada_value_subscript | |
8772 | (ada_coerce_to_simple_array (argvec[0]), | |
8773 | nargs, argvec + 1)); | |
8774 | case TYPE_CODE_PTR: /* Pointer to array */ | |
8775 | type = to_fixed_array_type (TYPE_TARGET_TYPE (type), NULL, 1); | |
8776 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8777 | { | |
8778 | type = ada_array_element_type (type, nargs); | |
8779 | if (type == NULL) | |
323e0a4a | 8780 | error (_("element type of array unknown")); |
4c4b4cd2 | 8781 | else |
0a07e705 | 8782 | return value_zero (ada_aligned_type (type), lval_memory); |
4c4b4cd2 PH |
8783 | } |
8784 | return | |
8785 | unwrap_value (ada_value_ptr_subscript (argvec[0], type, | |
8786 | nargs, argvec + 1)); | |
8787 | ||
8788 | default: | |
e1d5a0d2 PH |
8789 | error (_("Attempt to index or call something other than an " |
8790 | "array or function")); | |
4c4b4cd2 PH |
8791 | } |
8792 | ||
8793 | case TERNOP_SLICE: | |
8794 | { | |
8795 | struct value *array = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8796 | struct value *low_bound_val = | |
8797 | evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
714e53ab PH |
8798 | struct value *high_bound_val = |
8799 | evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8800 | LONGEST low_bound; | |
8801 | LONGEST high_bound; | |
994b9211 AC |
8802 | low_bound_val = coerce_ref (low_bound_val); |
8803 | high_bound_val = coerce_ref (high_bound_val); | |
714e53ab PH |
8804 | low_bound = pos_atr (low_bound_val); |
8805 | high_bound = pos_atr (high_bound_val); | |
963a6417 | 8806 | |
4c4b4cd2 PH |
8807 | if (noside == EVAL_SKIP) |
8808 | goto nosideret; | |
8809 | ||
4c4b4cd2 PH |
8810 | /* If this is a reference to an aligner type, then remove all |
8811 | the aligners. */ | |
df407dfe AC |
8812 | if (TYPE_CODE (value_type (array)) == TYPE_CODE_REF |
8813 | && ada_is_aligner_type (TYPE_TARGET_TYPE (value_type (array)))) | |
8814 | TYPE_TARGET_TYPE (value_type (array)) = | |
8815 | ada_aligned_type (TYPE_TARGET_TYPE (value_type (array))); | |
4c4b4cd2 | 8816 | |
df407dfe | 8817 | if (ada_is_packed_array_type (value_type (array))) |
323e0a4a | 8818 | error (_("cannot slice a packed array")); |
4c4b4cd2 PH |
8819 | |
8820 | /* If this is a reference to an array or an array lvalue, | |
8821 | convert to a pointer. */ | |
df407dfe AC |
8822 | if (TYPE_CODE (value_type (array)) == TYPE_CODE_REF |
8823 | || (TYPE_CODE (value_type (array)) == TYPE_CODE_ARRAY | |
4c4b4cd2 PH |
8824 | && VALUE_LVAL (array) == lval_memory)) |
8825 | array = value_addr (array); | |
8826 | ||
1265e4aa | 8827 | if (noside == EVAL_AVOID_SIDE_EFFECTS |
61ee279c | 8828 | && ada_is_array_descriptor_type (ada_check_typedef |
df407dfe | 8829 | (value_type (array)))) |
0b5d8877 | 8830 | return empty_array (ada_type_of_array (array, 0), low_bound); |
4c4b4cd2 PH |
8831 | |
8832 | array = ada_coerce_to_simple_array_ptr (array); | |
8833 | ||
714e53ab PH |
8834 | /* If we have more than one level of pointer indirection, |
8835 | dereference the value until we get only one level. */ | |
df407dfe AC |
8836 | while (TYPE_CODE (value_type (array)) == TYPE_CODE_PTR |
8837 | && (TYPE_CODE (TYPE_TARGET_TYPE (value_type (array))) | |
714e53ab PH |
8838 | == TYPE_CODE_PTR)) |
8839 | array = value_ind (array); | |
8840 | ||
8841 | /* Make sure we really do have an array type before going further, | |
8842 | to avoid a SEGV when trying to get the index type or the target | |
8843 | type later down the road if the debug info generated by | |
8844 | the compiler is incorrect or incomplete. */ | |
df407dfe | 8845 | if (!ada_is_simple_array_type (value_type (array))) |
323e0a4a | 8846 | error (_("cannot take slice of non-array")); |
714e53ab | 8847 | |
df407dfe | 8848 | if (TYPE_CODE (value_type (array)) == TYPE_CODE_PTR) |
4c4b4cd2 | 8849 | { |
0b5d8877 | 8850 | if (high_bound < low_bound || noside == EVAL_AVOID_SIDE_EFFECTS) |
df407dfe | 8851 | return empty_array (TYPE_TARGET_TYPE (value_type (array)), |
4c4b4cd2 PH |
8852 | low_bound); |
8853 | else | |
8854 | { | |
8855 | struct type *arr_type0 = | |
df407dfe | 8856 | to_fixed_array_type (TYPE_TARGET_TYPE (value_type (array)), |
4c4b4cd2 | 8857 | NULL, 1); |
0b5d8877 | 8858 | return ada_value_slice_ptr (array, arr_type0, |
529cad9c PH |
8859 | longest_to_int (low_bound), |
8860 | longest_to_int (high_bound)); | |
4c4b4cd2 PH |
8861 | } |
8862 | } | |
8863 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8864 | return array; | |
8865 | else if (high_bound < low_bound) | |
df407dfe | 8866 | return empty_array (value_type (array), low_bound); |
4c4b4cd2 | 8867 | else |
529cad9c PH |
8868 | return ada_value_slice (array, longest_to_int (low_bound), |
8869 | longest_to_int (high_bound)); | |
4c4b4cd2 | 8870 | } |
14f9c5c9 | 8871 | |
4c4b4cd2 PH |
8872 | case UNOP_IN_RANGE: |
8873 | (*pos) += 2; | |
8874 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8875 | type = exp->elts[pc + 1].type; | |
14f9c5c9 | 8876 | |
14f9c5c9 | 8877 | if (noside == EVAL_SKIP) |
4c4b4cd2 | 8878 | goto nosideret; |
14f9c5c9 | 8879 | |
4c4b4cd2 PH |
8880 | switch (TYPE_CODE (type)) |
8881 | { | |
8882 | default: | |
e1d5a0d2 PH |
8883 | lim_warning (_("Membership test incompletely implemented; " |
8884 | "always returns true")); | |
4c4b4cd2 PH |
8885 | return value_from_longest (builtin_type_int, (LONGEST) 1); |
8886 | ||
8887 | case TYPE_CODE_RANGE: | |
76a01679 | 8888 | arg2 = value_from_longest (builtin_type_int, TYPE_LOW_BOUND (type)); |
4c4b4cd2 PH |
8889 | arg3 = value_from_longest (builtin_type_int, |
8890 | TYPE_HIGH_BOUND (type)); | |
8891 | return | |
8892 | value_from_longest (builtin_type_int, | |
8893 | (value_less (arg1, arg3) | |
8894 | || value_equal (arg1, arg3)) | |
8895 | && (value_less (arg2, arg1) | |
8896 | || value_equal (arg2, arg1))); | |
8897 | } | |
8898 | ||
8899 | case BINOP_IN_BOUNDS: | |
14f9c5c9 | 8900 | (*pos) += 2; |
4c4b4cd2 PH |
8901 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
8902 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
14f9c5c9 | 8903 | |
4c4b4cd2 PH |
8904 | if (noside == EVAL_SKIP) |
8905 | goto nosideret; | |
14f9c5c9 | 8906 | |
4c4b4cd2 PH |
8907 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
8908 | return value_zero (builtin_type_int, not_lval); | |
14f9c5c9 | 8909 | |
4c4b4cd2 | 8910 | tem = longest_to_int (exp->elts[pc + 1].longconst); |
14f9c5c9 | 8911 | |
df407dfe | 8912 | if (tem < 1 || tem > ada_array_arity (value_type (arg2))) |
323e0a4a | 8913 | error (_("invalid dimension number to 'range")); |
14f9c5c9 | 8914 | |
4c4b4cd2 PH |
8915 | arg3 = ada_array_bound (arg2, tem, 1); |
8916 | arg2 = ada_array_bound (arg2, tem, 0); | |
d2e4a39e | 8917 | |
4c4b4cd2 PH |
8918 | return |
8919 | value_from_longest (builtin_type_int, | |
8920 | (value_less (arg1, arg3) | |
8921 | || value_equal (arg1, arg3)) | |
8922 | && (value_less (arg2, arg1) | |
8923 | || value_equal (arg2, arg1))); | |
8924 | ||
8925 | case TERNOP_IN_RANGE: | |
8926 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8927 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8928 | arg3 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8929 | ||
8930 | if (noside == EVAL_SKIP) | |
8931 | goto nosideret; | |
8932 | ||
8933 | return | |
8934 | value_from_longest (builtin_type_int, | |
8935 | (value_less (arg1, arg3) | |
8936 | || value_equal (arg1, arg3)) | |
8937 | && (value_less (arg2, arg1) | |
8938 | || value_equal (arg2, arg1))); | |
8939 | ||
8940 | case OP_ATR_FIRST: | |
8941 | case OP_ATR_LAST: | |
8942 | case OP_ATR_LENGTH: | |
8943 | { | |
76a01679 JB |
8944 | struct type *type_arg; |
8945 | if (exp->elts[*pos].opcode == OP_TYPE) | |
8946 | { | |
8947 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
8948 | arg1 = NULL; | |
8949 | type_arg = exp->elts[pc + 2].type; | |
8950 | } | |
8951 | else | |
8952 | { | |
8953 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8954 | type_arg = NULL; | |
8955 | } | |
8956 | ||
8957 | if (exp->elts[*pos].opcode != OP_LONG) | |
323e0a4a | 8958 | error (_("Invalid operand to '%s"), ada_attribute_name (op)); |
76a01679 JB |
8959 | tem = longest_to_int (exp->elts[*pos + 2].longconst); |
8960 | *pos += 4; | |
8961 | ||
8962 | if (noside == EVAL_SKIP) | |
8963 | goto nosideret; | |
8964 | ||
8965 | if (type_arg == NULL) | |
8966 | { | |
8967 | arg1 = ada_coerce_ref (arg1); | |
8968 | ||
df407dfe | 8969 | if (ada_is_packed_array_type (value_type (arg1))) |
76a01679 JB |
8970 | arg1 = ada_coerce_to_simple_array (arg1); |
8971 | ||
df407dfe | 8972 | if (tem < 1 || tem > ada_array_arity (value_type (arg1))) |
323e0a4a | 8973 | error (_("invalid dimension number to '%s"), |
76a01679 JB |
8974 | ada_attribute_name (op)); |
8975 | ||
8976 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8977 | { | |
df407dfe | 8978 | type = ada_index_type (value_type (arg1), tem); |
76a01679 JB |
8979 | if (type == NULL) |
8980 | error | |
323e0a4a | 8981 | (_("attempt to take bound of something that is not an array")); |
76a01679 JB |
8982 | return allocate_value (type); |
8983 | } | |
8984 | ||
8985 | switch (op) | |
8986 | { | |
8987 | default: /* Should never happen. */ | |
323e0a4a | 8988 | error (_("unexpected attribute encountered")); |
76a01679 JB |
8989 | case OP_ATR_FIRST: |
8990 | return ada_array_bound (arg1, tem, 0); | |
8991 | case OP_ATR_LAST: | |
8992 | return ada_array_bound (arg1, tem, 1); | |
8993 | case OP_ATR_LENGTH: | |
8994 | return ada_array_length (arg1, tem); | |
8995 | } | |
8996 | } | |
8997 | else if (discrete_type_p (type_arg)) | |
8998 | { | |
8999 | struct type *range_type; | |
9000 | char *name = ada_type_name (type_arg); | |
9001 | range_type = NULL; | |
9002 | if (name != NULL && TYPE_CODE (type_arg) != TYPE_CODE_ENUM) | |
9003 | range_type = | |
9004 | to_fixed_range_type (name, NULL, TYPE_OBJFILE (type_arg)); | |
9005 | if (range_type == NULL) | |
9006 | range_type = type_arg; | |
9007 | switch (op) | |
9008 | { | |
9009 | default: | |
323e0a4a | 9010 | error (_("unexpected attribute encountered")); |
76a01679 JB |
9011 | case OP_ATR_FIRST: |
9012 | return discrete_type_low_bound (range_type); | |
9013 | case OP_ATR_LAST: | |
9014 | return discrete_type_high_bound (range_type); | |
9015 | case OP_ATR_LENGTH: | |
323e0a4a | 9016 | error (_("the 'length attribute applies only to array types")); |
76a01679 JB |
9017 | } |
9018 | } | |
9019 | else if (TYPE_CODE (type_arg) == TYPE_CODE_FLT) | |
323e0a4a | 9020 | error (_("unimplemented type attribute")); |
76a01679 JB |
9021 | else |
9022 | { | |
9023 | LONGEST low, high; | |
9024 | ||
9025 | if (ada_is_packed_array_type (type_arg)) | |
9026 | type_arg = decode_packed_array_type (type_arg); | |
9027 | ||
9028 | if (tem < 1 || tem > ada_array_arity (type_arg)) | |
323e0a4a | 9029 | error (_("invalid dimension number to '%s"), |
76a01679 JB |
9030 | ada_attribute_name (op)); |
9031 | ||
9032 | type = ada_index_type (type_arg, tem); | |
9033 | if (type == NULL) | |
9034 | error | |
323e0a4a | 9035 | (_("attempt to take bound of something that is not an array")); |
76a01679 JB |
9036 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
9037 | return allocate_value (type); | |
9038 | ||
9039 | switch (op) | |
9040 | { | |
9041 | default: | |
323e0a4a | 9042 | error (_("unexpected attribute encountered")); |
76a01679 JB |
9043 | case OP_ATR_FIRST: |
9044 | low = ada_array_bound_from_type (type_arg, tem, 0, &type); | |
9045 | return value_from_longest (type, low); | |
9046 | case OP_ATR_LAST: | |
9047 | high = ada_array_bound_from_type (type_arg, tem, 1, &type); | |
9048 | return value_from_longest (type, high); | |
9049 | case OP_ATR_LENGTH: | |
9050 | low = ada_array_bound_from_type (type_arg, tem, 0, &type); | |
9051 | high = ada_array_bound_from_type (type_arg, tem, 1, NULL); | |
9052 | return value_from_longest (type, high - low + 1); | |
9053 | } | |
9054 | } | |
14f9c5c9 AS |
9055 | } |
9056 | ||
4c4b4cd2 PH |
9057 | case OP_ATR_TAG: |
9058 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9059 | if (noside == EVAL_SKIP) | |
76a01679 | 9060 | goto nosideret; |
4c4b4cd2 PH |
9061 | |
9062 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
76a01679 | 9063 | return value_zero (ada_tag_type (arg1), not_lval); |
4c4b4cd2 PH |
9064 | |
9065 | return ada_value_tag (arg1); | |
9066 | ||
9067 | case OP_ATR_MIN: | |
9068 | case OP_ATR_MAX: | |
9069 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 AS |
9070 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
9071 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9072 | if (noside == EVAL_SKIP) | |
76a01679 | 9073 | goto nosideret; |
d2e4a39e | 9074 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
df407dfe | 9075 | return value_zero (value_type (arg1), not_lval); |
14f9c5c9 | 9076 | else |
76a01679 JB |
9077 | return value_binop (arg1, arg2, |
9078 | op == OP_ATR_MIN ? BINOP_MIN : BINOP_MAX); | |
14f9c5c9 | 9079 | |
4c4b4cd2 PH |
9080 | case OP_ATR_MODULUS: |
9081 | { | |
76a01679 JB |
9082 | struct type *type_arg = exp->elts[pc + 2].type; |
9083 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
4c4b4cd2 | 9084 | |
76a01679 JB |
9085 | if (noside == EVAL_SKIP) |
9086 | goto nosideret; | |
4c4b4cd2 | 9087 | |
76a01679 | 9088 | if (!ada_is_modular_type (type_arg)) |
323e0a4a | 9089 | error (_("'modulus must be applied to modular type")); |
4c4b4cd2 | 9090 | |
76a01679 JB |
9091 | return value_from_longest (TYPE_TARGET_TYPE (type_arg), |
9092 | ada_modulus (type_arg)); | |
4c4b4cd2 PH |
9093 | } |
9094 | ||
9095 | ||
9096 | case OP_ATR_POS: | |
9097 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 AS |
9098 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
9099 | if (noside == EVAL_SKIP) | |
76a01679 | 9100 | goto nosideret; |
4c4b4cd2 | 9101 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
72d5681a | 9102 | return value_zero (builtin_type_int, not_lval); |
14f9c5c9 | 9103 | else |
76a01679 | 9104 | return value_pos_atr (arg1); |
14f9c5c9 | 9105 | |
4c4b4cd2 PH |
9106 | case OP_ATR_SIZE: |
9107 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9108 | if (noside == EVAL_SKIP) | |
76a01679 | 9109 | goto nosideret; |
4c4b4cd2 | 9110 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
72d5681a | 9111 | return value_zero (builtin_type_int, not_lval); |
4c4b4cd2 | 9112 | else |
72d5681a | 9113 | return value_from_longest (builtin_type_int, |
76a01679 | 9114 | TARGET_CHAR_BIT |
df407dfe | 9115 | * TYPE_LENGTH (value_type (arg1))); |
4c4b4cd2 PH |
9116 | |
9117 | case OP_ATR_VAL: | |
9118 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 | 9119 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
4c4b4cd2 | 9120 | type = exp->elts[pc + 2].type; |
14f9c5c9 | 9121 | if (noside == EVAL_SKIP) |
76a01679 | 9122 | goto nosideret; |
4c4b4cd2 | 9123 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 9124 | return value_zero (type, not_lval); |
4c4b4cd2 | 9125 | else |
76a01679 | 9126 | return value_val_atr (type, arg1); |
4c4b4cd2 PH |
9127 | |
9128 | case BINOP_EXP: | |
9129 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9130 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9131 | if (noside == EVAL_SKIP) | |
9132 | goto nosideret; | |
9133 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
df407dfe | 9134 | return value_zero (value_type (arg1), not_lval); |
4c4b4cd2 PH |
9135 | else |
9136 | return value_binop (arg1, arg2, op); | |
9137 | ||
9138 | case UNOP_PLUS: | |
9139 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9140 | if (noside == EVAL_SKIP) | |
9141 | goto nosideret; | |
9142 | else | |
9143 | return arg1; | |
9144 | ||
9145 | case UNOP_ABS: | |
9146 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9147 | if (noside == EVAL_SKIP) | |
9148 | goto nosideret; | |
df407dfe | 9149 | if (value_less (arg1, value_zero (value_type (arg1), not_lval))) |
4c4b4cd2 | 9150 | return value_neg (arg1); |
14f9c5c9 | 9151 | else |
4c4b4cd2 | 9152 | return arg1; |
14f9c5c9 AS |
9153 | |
9154 | case UNOP_IND: | |
9155 | if (expect_type && TYPE_CODE (expect_type) == TYPE_CODE_PTR) | |
61ee279c | 9156 | expect_type = TYPE_TARGET_TYPE (ada_check_typedef (expect_type)); |
14f9c5c9 AS |
9157 | arg1 = evaluate_subexp (expect_type, exp, pos, noside); |
9158 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 9159 | goto nosideret; |
df407dfe | 9160 | type = ada_check_typedef (value_type (arg1)); |
14f9c5c9 | 9161 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 PH |
9162 | { |
9163 | if (ada_is_array_descriptor_type (type)) | |
9164 | /* GDB allows dereferencing GNAT array descriptors. */ | |
9165 | { | |
9166 | struct type *arrType = ada_type_of_array (arg1, 0); | |
9167 | if (arrType == NULL) | |
323e0a4a | 9168 | error (_("Attempt to dereference null array pointer.")); |
00a4c844 | 9169 | return value_at_lazy (arrType, 0); |
4c4b4cd2 PH |
9170 | } |
9171 | else if (TYPE_CODE (type) == TYPE_CODE_PTR | |
9172 | || TYPE_CODE (type) == TYPE_CODE_REF | |
9173 | /* In C you can dereference an array to get the 1st elt. */ | |
9174 | || TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
714e53ab PH |
9175 | { |
9176 | type = to_static_fixed_type | |
9177 | (ada_aligned_type | |
9178 | (ada_check_typedef (TYPE_TARGET_TYPE (type)))); | |
9179 | check_size (type); | |
9180 | return value_zero (type, lval_memory); | |
9181 | } | |
4c4b4cd2 PH |
9182 | else if (TYPE_CODE (type) == TYPE_CODE_INT) |
9183 | /* GDB allows dereferencing an int. */ | |
9184 | return value_zero (builtin_type_int, lval_memory); | |
9185 | else | |
323e0a4a | 9186 | error (_("Attempt to take contents of a non-pointer value.")); |
4c4b4cd2 | 9187 | } |
76a01679 | 9188 | arg1 = ada_coerce_ref (arg1); /* FIXME: What is this for?? */ |
df407dfe | 9189 | type = ada_check_typedef (value_type (arg1)); |
d2e4a39e | 9190 | |
4c4b4cd2 PH |
9191 | if (ada_is_array_descriptor_type (type)) |
9192 | /* GDB allows dereferencing GNAT array descriptors. */ | |
9193 | return ada_coerce_to_simple_array (arg1); | |
14f9c5c9 | 9194 | else |
4c4b4cd2 | 9195 | return ada_value_ind (arg1); |
14f9c5c9 AS |
9196 | |
9197 | case STRUCTOP_STRUCT: | |
9198 | tem = longest_to_int (exp->elts[pc + 1].longconst); | |
9199 | (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); | |
9200 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9201 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 9202 | goto nosideret; |
14f9c5c9 | 9203 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 9204 | { |
df407dfe | 9205 | struct type *type1 = value_type (arg1); |
76a01679 JB |
9206 | if (ada_is_tagged_type (type1, 1)) |
9207 | { | |
9208 | type = ada_lookup_struct_elt_type (type1, | |
9209 | &exp->elts[pc + 2].string, | |
9210 | 1, 1, NULL); | |
9211 | if (type == NULL) | |
9212 | /* In this case, we assume that the field COULD exist | |
9213 | in some extension of the type. Return an object of | |
9214 | "type" void, which will match any formal | |
9215 | (see ada_type_match). */ | |
9216 | return value_zero (builtin_type_void, lval_memory); | |
9217 | } | |
9218 | else | |
9219 | type = | |
9220 | ada_lookup_struct_elt_type (type1, &exp->elts[pc + 2].string, 1, | |
9221 | 0, NULL); | |
9222 | ||
9223 | return value_zero (ada_aligned_type (type), lval_memory); | |
9224 | } | |
14f9c5c9 | 9225 | else |
76a01679 JB |
9226 | return |
9227 | ada_to_fixed_value (unwrap_value | |
9228 | (ada_value_struct_elt | |
03ee6b2e | 9229 | (arg1, &exp->elts[pc + 2].string, 0))); |
14f9c5c9 | 9230 | case OP_TYPE: |
4c4b4cd2 PH |
9231 | /* The value is not supposed to be used. This is here to make it |
9232 | easier to accommodate expressions that contain types. */ | |
14f9c5c9 AS |
9233 | (*pos) += 2; |
9234 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 9235 | goto nosideret; |
14f9c5c9 | 9236 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
a6cfbe68 | 9237 | return allocate_value (exp->elts[pc + 1].type); |
14f9c5c9 | 9238 | else |
323e0a4a | 9239 | error (_("Attempt to use a type name as an expression")); |
52ce6436 PH |
9240 | |
9241 | case OP_AGGREGATE: | |
9242 | case OP_CHOICES: | |
9243 | case OP_OTHERS: | |
9244 | case OP_DISCRETE_RANGE: | |
9245 | case OP_POSITIONAL: | |
9246 | case OP_NAME: | |
9247 | if (noside == EVAL_NORMAL) | |
9248 | switch (op) | |
9249 | { | |
9250 | case OP_NAME: | |
9251 | error (_("Undefined name, ambiguous name, or renaming used in " | |
e1d5a0d2 | 9252 | "component association: %s."), &exp->elts[pc+2].string); |
52ce6436 PH |
9253 | case OP_AGGREGATE: |
9254 | error (_("Aggregates only allowed on the right of an assignment")); | |
9255 | default: | |
e1d5a0d2 | 9256 | internal_error (__FILE__, __LINE__, _("aggregate apparently mangled")); |
52ce6436 PH |
9257 | } |
9258 | ||
9259 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
9260 | *pos += oplen - 1; | |
9261 | for (tem = 0; tem < nargs; tem += 1) | |
9262 | ada_evaluate_subexp (NULL, exp, pos, noside); | |
9263 | goto nosideret; | |
14f9c5c9 AS |
9264 | } |
9265 | ||
9266 | nosideret: | |
9267 | return value_from_longest (builtin_type_long, (LONGEST) 1); | |
9268 | } | |
14f9c5c9 | 9269 | \f |
d2e4a39e | 9270 | |
4c4b4cd2 | 9271 | /* Fixed point */ |
14f9c5c9 AS |
9272 | |
9273 | /* If TYPE encodes an Ada fixed-point type, return the suffix of the | |
9274 | type name that encodes the 'small and 'delta information. | |
4c4b4cd2 | 9275 | Otherwise, return NULL. */ |
14f9c5c9 | 9276 | |
d2e4a39e | 9277 | static const char * |
ebf56fd3 | 9278 | fixed_type_info (struct type *type) |
14f9c5c9 | 9279 | { |
d2e4a39e | 9280 | const char *name = ada_type_name (type); |
14f9c5c9 AS |
9281 | enum type_code code = (type == NULL) ? TYPE_CODE_UNDEF : TYPE_CODE (type); |
9282 | ||
d2e4a39e AS |
9283 | if ((code == TYPE_CODE_INT || code == TYPE_CODE_RANGE) && name != NULL) |
9284 | { | |
14f9c5c9 AS |
9285 | const char *tail = strstr (name, "___XF_"); |
9286 | if (tail == NULL) | |
4c4b4cd2 | 9287 | return NULL; |
d2e4a39e | 9288 | else |
4c4b4cd2 | 9289 | return tail + 5; |
14f9c5c9 AS |
9290 | } |
9291 | else if (code == TYPE_CODE_RANGE && TYPE_TARGET_TYPE (type) != type) | |
9292 | return fixed_type_info (TYPE_TARGET_TYPE (type)); | |
9293 | else | |
9294 | return NULL; | |
9295 | } | |
9296 | ||
4c4b4cd2 | 9297 | /* Returns non-zero iff TYPE represents an Ada fixed-point type. */ |
14f9c5c9 AS |
9298 | |
9299 | int | |
ebf56fd3 | 9300 | ada_is_fixed_point_type (struct type *type) |
14f9c5c9 AS |
9301 | { |
9302 | return fixed_type_info (type) != NULL; | |
9303 | } | |
9304 | ||
4c4b4cd2 PH |
9305 | /* Return non-zero iff TYPE represents a System.Address type. */ |
9306 | ||
9307 | int | |
9308 | ada_is_system_address_type (struct type *type) | |
9309 | { | |
9310 | return (TYPE_NAME (type) | |
9311 | && strcmp (TYPE_NAME (type), "system__address") == 0); | |
9312 | } | |
9313 | ||
14f9c5c9 AS |
9314 | /* Assuming that TYPE is the representation of an Ada fixed-point |
9315 | type, return its delta, or -1 if the type is malformed and the | |
4c4b4cd2 | 9316 | delta cannot be determined. */ |
14f9c5c9 AS |
9317 | |
9318 | DOUBLEST | |
ebf56fd3 | 9319 | ada_delta (struct type *type) |
14f9c5c9 AS |
9320 | { |
9321 | const char *encoding = fixed_type_info (type); | |
9322 | long num, den; | |
9323 | ||
9324 | if (sscanf (encoding, "_%ld_%ld", &num, &den) < 2) | |
9325 | return -1.0; | |
d2e4a39e | 9326 | else |
14f9c5c9 AS |
9327 | return (DOUBLEST) num / (DOUBLEST) den; |
9328 | } | |
9329 | ||
9330 | /* Assuming that ada_is_fixed_point_type (TYPE), return the scaling | |
4c4b4cd2 | 9331 | factor ('SMALL value) associated with the type. */ |
14f9c5c9 AS |
9332 | |
9333 | static DOUBLEST | |
ebf56fd3 | 9334 | scaling_factor (struct type *type) |
14f9c5c9 AS |
9335 | { |
9336 | const char *encoding = fixed_type_info (type); | |
9337 | unsigned long num0, den0, num1, den1; | |
9338 | int n; | |
d2e4a39e | 9339 | |
14f9c5c9 AS |
9340 | n = sscanf (encoding, "_%lu_%lu_%lu_%lu", &num0, &den0, &num1, &den1); |
9341 | ||
9342 | if (n < 2) | |
9343 | return 1.0; | |
9344 | else if (n == 4) | |
9345 | return (DOUBLEST) num1 / (DOUBLEST) den1; | |
d2e4a39e | 9346 | else |
14f9c5c9 AS |
9347 | return (DOUBLEST) num0 / (DOUBLEST) den0; |
9348 | } | |
9349 | ||
9350 | ||
9351 | /* Assuming that X is the representation of a value of fixed-point | |
4c4b4cd2 | 9352 | type TYPE, return its floating-point equivalent. */ |
14f9c5c9 AS |
9353 | |
9354 | DOUBLEST | |
ebf56fd3 | 9355 | ada_fixed_to_float (struct type *type, LONGEST x) |
14f9c5c9 | 9356 | { |
d2e4a39e | 9357 | return (DOUBLEST) x *scaling_factor (type); |
14f9c5c9 AS |
9358 | } |
9359 | ||
4c4b4cd2 PH |
9360 | /* The representation of a fixed-point value of type TYPE |
9361 | corresponding to the value X. */ | |
14f9c5c9 AS |
9362 | |
9363 | LONGEST | |
ebf56fd3 | 9364 | ada_float_to_fixed (struct type *type, DOUBLEST x) |
14f9c5c9 AS |
9365 | { |
9366 | return (LONGEST) (x / scaling_factor (type) + 0.5); | |
9367 | } | |
9368 | ||
9369 | ||
4c4b4cd2 | 9370 | /* VAX floating formats */ |
14f9c5c9 AS |
9371 | |
9372 | /* Non-zero iff TYPE represents one of the special VAX floating-point | |
4c4b4cd2 PH |
9373 | types. */ |
9374 | ||
14f9c5c9 | 9375 | int |
d2e4a39e | 9376 | ada_is_vax_floating_type (struct type *type) |
14f9c5c9 | 9377 | { |
d2e4a39e | 9378 | int name_len = |
14f9c5c9 | 9379 | (ada_type_name (type) == NULL) ? 0 : strlen (ada_type_name (type)); |
d2e4a39e | 9380 | return |
14f9c5c9 | 9381 | name_len > 6 |
d2e4a39e | 9382 | && (TYPE_CODE (type) == TYPE_CODE_INT |
4c4b4cd2 PH |
9383 | || TYPE_CODE (type) == TYPE_CODE_RANGE) |
9384 | && strncmp (ada_type_name (type) + name_len - 6, "___XF", 5) == 0; | |
14f9c5c9 AS |
9385 | } |
9386 | ||
9387 | /* The type of special VAX floating-point type this is, assuming | |
4c4b4cd2 PH |
9388 | ada_is_vax_floating_point. */ |
9389 | ||
14f9c5c9 | 9390 | int |
d2e4a39e | 9391 | ada_vax_float_type_suffix (struct type *type) |
14f9c5c9 | 9392 | { |
d2e4a39e | 9393 | return ada_type_name (type)[strlen (ada_type_name (type)) - 1]; |
14f9c5c9 AS |
9394 | } |
9395 | ||
4c4b4cd2 | 9396 | /* A value representing the special debugging function that outputs |
14f9c5c9 | 9397 | VAX floating-point values of the type represented by TYPE. Assumes |
4c4b4cd2 PH |
9398 | ada_is_vax_floating_type (TYPE). */ |
9399 | ||
d2e4a39e AS |
9400 | struct value * |
9401 | ada_vax_float_print_function (struct type *type) | |
9402 | { | |
9403 | switch (ada_vax_float_type_suffix (type)) | |
9404 | { | |
9405 | case 'F': | |
9406 | return get_var_value ("DEBUG_STRING_F", 0); | |
9407 | case 'D': | |
9408 | return get_var_value ("DEBUG_STRING_D", 0); | |
9409 | case 'G': | |
9410 | return get_var_value ("DEBUG_STRING_G", 0); | |
9411 | default: | |
323e0a4a | 9412 | error (_("invalid VAX floating-point type")); |
d2e4a39e | 9413 | } |
14f9c5c9 | 9414 | } |
14f9c5c9 | 9415 | \f |
d2e4a39e | 9416 | |
4c4b4cd2 | 9417 | /* Range types */ |
14f9c5c9 AS |
9418 | |
9419 | /* Scan STR beginning at position K for a discriminant name, and | |
9420 | return the value of that discriminant field of DVAL in *PX. If | |
9421 | PNEW_K is not null, put the position of the character beyond the | |
9422 | name scanned in *PNEW_K. Return 1 if successful; return 0 and do | |
4c4b4cd2 | 9423 | not alter *PX and *PNEW_K if unsuccessful. */ |
14f9c5c9 AS |
9424 | |
9425 | static int | |
07d8f827 | 9426 | scan_discrim_bound (char *str, int k, struct value *dval, LONGEST * px, |
76a01679 | 9427 | int *pnew_k) |
14f9c5c9 AS |
9428 | { |
9429 | static char *bound_buffer = NULL; | |
9430 | static size_t bound_buffer_len = 0; | |
9431 | char *bound; | |
9432 | char *pend; | |
d2e4a39e | 9433 | struct value *bound_val; |
14f9c5c9 AS |
9434 | |
9435 | if (dval == NULL || str == NULL || str[k] == '\0') | |
9436 | return 0; | |
9437 | ||
d2e4a39e | 9438 | pend = strstr (str + k, "__"); |
14f9c5c9 AS |
9439 | if (pend == NULL) |
9440 | { | |
d2e4a39e | 9441 | bound = str + k; |
14f9c5c9 AS |
9442 | k += strlen (bound); |
9443 | } | |
d2e4a39e | 9444 | else |
14f9c5c9 | 9445 | { |
d2e4a39e | 9446 | GROW_VECT (bound_buffer, bound_buffer_len, pend - (str + k) + 1); |
14f9c5c9 | 9447 | bound = bound_buffer; |
d2e4a39e AS |
9448 | strncpy (bound_buffer, str + k, pend - (str + k)); |
9449 | bound[pend - (str + k)] = '\0'; | |
9450 | k = pend - str; | |
14f9c5c9 | 9451 | } |
d2e4a39e | 9452 | |
df407dfe | 9453 | bound_val = ada_search_struct_field (bound, dval, 0, value_type (dval)); |
14f9c5c9 AS |
9454 | if (bound_val == NULL) |
9455 | return 0; | |
9456 | ||
9457 | *px = value_as_long (bound_val); | |
9458 | if (pnew_k != NULL) | |
9459 | *pnew_k = k; | |
9460 | return 1; | |
9461 | } | |
9462 | ||
9463 | /* Value of variable named NAME in the current environment. If | |
9464 | no such variable found, then if ERR_MSG is null, returns 0, and | |
4c4b4cd2 PH |
9465 | otherwise causes an error with message ERR_MSG. */ |
9466 | ||
d2e4a39e AS |
9467 | static struct value * |
9468 | get_var_value (char *name, char *err_msg) | |
14f9c5c9 | 9469 | { |
4c4b4cd2 | 9470 | struct ada_symbol_info *syms; |
14f9c5c9 AS |
9471 | int nsyms; |
9472 | ||
4c4b4cd2 PH |
9473 | nsyms = ada_lookup_symbol_list (name, get_selected_block (0), VAR_DOMAIN, |
9474 | &syms); | |
14f9c5c9 AS |
9475 | |
9476 | if (nsyms != 1) | |
9477 | { | |
9478 | if (err_msg == NULL) | |
4c4b4cd2 | 9479 | return 0; |
14f9c5c9 | 9480 | else |
8a3fe4f8 | 9481 | error (("%s"), err_msg); |
14f9c5c9 AS |
9482 | } |
9483 | ||
4c4b4cd2 | 9484 | return value_of_variable (syms[0].sym, syms[0].block); |
14f9c5c9 | 9485 | } |
d2e4a39e | 9486 | |
14f9c5c9 | 9487 | /* Value of integer variable named NAME in the current environment. If |
4c4b4cd2 PH |
9488 | no such variable found, returns 0, and sets *FLAG to 0. If |
9489 | successful, sets *FLAG to 1. */ | |
9490 | ||
14f9c5c9 | 9491 | LONGEST |
4c4b4cd2 | 9492 | get_int_var_value (char *name, int *flag) |
14f9c5c9 | 9493 | { |
4c4b4cd2 | 9494 | struct value *var_val = get_var_value (name, 0); |
d2e4a39e | 9495 | |
14f9c5c9 AS |
9496 | if (var_val == 0) |
9497 | { | |
9498 | if (flag != NULL) | |
4c4b4cd2 | 9499 | *flag = 0; |
14f9c5c9 AS |
9500 | return 0; |
9501 | } | |
9502 | else | |
9503 | { | |
9504 | if (flag != NULL) | |
4c4b4cd2 | 9505 | *flag = 1; |
14f9c5c9 AS |
9506 | return value_as_long (var_val); |
9507 | } | |
9508 | } | |
d2e4a39e | 9509 | |
14f9c5c9 AS |
9510 | |
9511 | /* Return a range type whose base type is that of the range type named | |
9512 | NAME in the current environment, and whose bounds are calculated | |
4c4b4cd2 | 9513 | from NAME according to the GNAT range encoding conventions. |
14f9c5c9 AS |
9514 | Extract discriminant values, if needed, from DVAL. If a new type |
9515 | must be created, allocate in OBJFILE's space. The bounds | |
9516 | information, in general, is encoded in NAME, the base type given in | |
4c4b4cd2 | 9517 | the named range type. */ |
14f9c5c9 | 9518 | |
d2e4a39e | 9519 | static struct type * |
ebf56fd3 | 9520 | to_fixed_range_type (char *name, struct value *dval, struct objfile *objfile) |
14f9c5c9 AS |
9521 | { |
9522 | struct type *raw_type = ada_find_any_type (name); | |
9523 | struct type *base_type; | |
d2e4a39e | 9524 | char *subtype_info; |
14f9c5c9 AS |
9525 | |
9526 | if (raw_type == NULL) | |
9527 | base_type = builtin_type_int; | |
9528 | else if (TYPE_CODE (raw_type) == TYPE_CODE_RANGE) | |
9529 | base_type = TYPE_TARGET_TYPE (raw_type); | |
9530 | else | |
9531 | base_type = raw_type; | |
9532 | ||
9533 | subtype_info = strstr (name, "___XD"); | |
9534 | if (subtype_info == NULL) | |
9535 | return raw_type; | |
9536 | else | |
9537 | { | |
9538 | static char *name_buf = NULL; | |
9539 | static size_t name_len = 0; | |
9540 | int prefix_len = subtype_info - name; | |
9541 | LONGEST L, U; | |
9542 | struct type *type; | |
9543 | char *bounds_str; | |
9544 | int n; | |
9545 | ||
9546 | GROW_VECT (name_buf, name_len, prefix_len + 5); | |
9547 | strncpy (name_buf, name, prefix_len); | |
9548 | name_buf[prefix_len] = '\0'; | |
9549 | ||
9550 | subtype_info += 5; | |
9551 | bounds_str = strchr (subtype_info, '_'); | |
9552 | n = 1; | |
9553 | ||
d2e4a39e | 9554 | if (*subtype_info == 'L') |
4c4b4cd2 PH |
9555 | { |
9556 | if (!ada_scan_number (bounds_str, n, &L, &n) | |
9557 | && !scan_discrim_bound (bounds_str, n, dval, &L, &n)) | |
9558 | return raw_type; | |
9559 | if (bounds_str[n] == '_') | |
9560 | n += 2; | |
9561 | else if (bounds_str[n] == '.') /* FIXME? SGI Workshop kludge. */ | |
9562 | n += 1; | |
9563 | subtype_info += 1; | |
9564 | } | |
d2e4a39e | 9565 | else |
4c4b4cd2 PH |
9566 | { |
9567 | int ok; | |
9568 | strcpy (name_buf + prefix_len, "___L"); | |
9569 | L = get_int_var_value (name_buf, &ok); | |
9570 | if (!ok) | |
9571 | { | |
323e0a4a | 9572 | lim_warning (_("Unknown lower bound, using 1.")); |
4c4b4cd2 PH |
9573 | L = 1; |
9574 | } | |
9575 | } | |
14f9c5c9 | 9576 | |
d2e4a39e | 9577 | if (*subtype_info == 'U') |
4c4b4cd2 PH |
9578 | { |
9579 | if (!ada_scan_number (bounds_str, n, &U, &n) | |
9580 | && !scan_discrim_bound (bounds_str, n, dval, &U, &n)) | |
9581 | return raw_type; | |
9582 | } | |
d2e4a39e | 9583 | else |
4c4b4cd2 PH |
9584 | { |
9585 | int ok; | |
9586 | strcpy (name_buf + prefix_len, "___U"); | |
9587 | U = get_int_var_value (name_buf, &ok); | |
9588 | if (!ok) | |
9589 | { | |
323e0a4a | 9590 | lim_warning (_("Unknown upper bound, using %ld."), (long) L); |
4c4b4cd2 PH |
9591 | U = L; |
9592 | } | |
9593 | } | |
14f9c5c9 | 9594 | |
d2e4a39e | 9595 | if (objfile == NULL) |
4c4b4cd2 | 9596 | objfile = TYPE_OBJFILE (base_type); |
14f9c5c9 | 9597 | type = create_range_type (alloc_type (objfile), base_type, L, U); |
d2e4a39e | 9598 | TYPE_NAME (type) = name; |
14f9c5c9 AS |
9599 | return type; |
9600 | } | |
9601 | } | |
9602 | ||
4c4b4cd2 PH |
9603 | /* True iff NAME is the name of a range type. */ |
9604 | ||
14f9c5c9 | 9605 | int |
d2e4a39e | 9606 | ada_is_range_type_name (const char *name) |
14f9c5c9 AS |
9607 | { |
9608 | return (name != NULL && strstr (name, "___XD")); | |
d2e4a39e | 9609 | } |
14f9c5c9 | 9610 | \f |
d2e4a39e | 9611 | |
4c4b4cd2 PH |
9612 | /* Modular types */ |
9613 | ||
9614 | /* True iff TYPE is an Ada modular type. */ | |
14f9c5c9 | 9615 | |
14f9c5c9 | 9616 | int |
d2e4a39e | 9617 | ada_is_modular_type (struct type *type) |
14f9c5c9 | 9618 | { |
4c4b4cd2 | 9619 | struct type *subranged_type = base_type (type); |
14f9c5c9 AS |
9620 | |
9621 | return (subranged_type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE | |
4c4b4cd2 PH |
9622 | && TYPE_CODE (subranged_type) != TYPE_CODE_ENUM |
9623 | && TYPE_UNSIGNED (subranged_type)); | |
14f9c5c9 AS |
9624 | } |
9625 | ||
4c4b4cd2 PH |
9626 | /* Assuming ada_is_modular_type (TYPE), the modulus of TYPE. */ |
9627 | ||
61ee279c | 9628 | ULONGEST |
d2e4a39e | 9629 | ada_modulus (struct type * type) |
14f9c5c9 | 9630 | { |
61ee279c | 9631 | return (ULONGEST) TYPE_HIGH_BOUND (type) + 1; |
14f9c5c9 | 9632 | } |
d2e4a39e | 9633 | \f |
f7f9143b JB |
9634 | |
9635 | /* Ada exception catchpoint support: | |
9636 | --------------------------------- | |
9637 | ||
9638 | We support 3 kinds of exception catchpoints: | |
9639 | . catchpoints on Ada exceptions | |
9640 | . catchpoints on unhandled Ada exceptions | |
9641 | . catchpoints on failed assertions | |
9642 | ||
9643 | Exceptions raised during failed assertions, or unhandled exceptions | |
9644 | could perfectly be caught with the general catchpoint on Ada exceptions. | |
9645 | However, we can easily differentiate these two special cases, and having | |
9646 | the option to distinguish these two cases from the rest can be useful | |
9647 | to zero-in on certain situations. | |
9648 | ||
9649 | Exception catchpoints are a specialized form of breakpoint, | |
9650 | since they rely on inserting breakpoints inside known routines | |
9651 | of the GNAT runtime. The implementation therefore uses a standard | |
9652 | breakpoint structure of the BP_BREAKPOINT type, but with its own set | |
9653 | of breakpoint_ops. | |
9654 | ||
0259addd JB |
9655 | Support in the runtime for exception catchpoints have been changed |
9656 | a few times already, and these changes affect the implementation | |
9657 | of these catchpoints. In order to be able to support several | |
9658 | variants of the runtime, we use a sniffer that will determine | |
9659 | the runtime variant used by the program being debugged. | |
9660 | ||
f7f9143b JB |
9661 | At this time, we do not support the use of conditions on Ada exception |
9662 | catchpoints. The COND and COND_STRING fields are therefore set | |
9663 | to NULL (most of the time, see below). | |
9664 | ||
9665 | Conditions where EXP_STRING, COND, and COND_STRING are used: | |
9666 | ||
9667 | When a user specifies the name of a specific exception in the case | |
9668 | of catchpoints on Ada exceptions, we store the name of that exception | |
9669 | in the EXP_STRING. We then translate this request into an actual | |
9670 | condition stored in COND_STRING, and then parse it into an expression | |
9671 | stored in COND. */ | |
9672 | ||
9673 | /* The different types of catchpoints that we introduced for catching | |
9674 | Ada exceptions. */ | |
9675 | ||
9676 | enum exception_catchpoint_kind | |
9677 | { | |
9678 | ex_catch_exception, | |
9679 | ex_catch_exception_unhandled, | |
9680 | ex_catch_assert | |
9681 | }; | |
9682 | ||
0259addd JB |
9683 | typedef CORE_ADDR (ada_unhandled_exception_name_addr_ftype) (void); |
9684 | ||
9685 | /* A structure that describes how to support exception catchpoints | |
9686 | for a given executable. */ | |
9687 | ||
9688 | struct exception_support_info | |
9689 | { | |
9690 | /* The name of the symbol to break on in order to insert | |
9691 | a catchpoint on exceptions. */ | |
9692 | const char *catch_exception_sym; | |
9693 | ||
9694 | /* The name of the symbol to break on in order to insert | |
9695 | a catchpoint on unhandled exceptions. */ | |
9696 | const char *catch_exception_unhandled_sym; | |
9697 | ||
9698 | /* The name of the symbol to break on in order to insert | |
9699 | a catchpoint on failed assertions. */ | |
9700 | const char *catch_assert_sym; | |
9701 | ||
9702 | /* Assuming that the inferior just triggered an unhandled exception | |
9703 | catchpoint, this function is responsible for returning the address | |
9704 | in inferior memory where the name of that exception is stored. | |
9705 | Return zero if the address could not be computed. */ | |
9706 | ada_unhandled_exception_name_addr_ftype *unhandled_exception_name_addr; | |
9707 | }; | |
9708 | ||
9709 | static CORE_ADDR ada_unhandled_exception_name_addr (void); | |
9710 | static CORE_ADDR ada_unhandled_exception_name_addr_from_raise (void); | |
9711 | ||
9712 | /* The following exception support info structure describes how to | |
9713 | implement exception catchpoints with the latest version of the | |
9714 | Ada runtime (as of 2007-03-06). */ | |
9715 | ||
9716 | static const struct exception_support_info default_exception_support_info = | |
9717 | { | |
9718 | "__gnat_debug_raise_exception", /* catch_exception_sym */ | |
9719 | "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */ | |
9720 | "__gnat_debug_raise_assert_failure", /* catch_assert_sym */ | |
9721 | ada_unhandled_exception_name_addr | |
9722 | }; | |
9723 | ||
9724 | /* The following exception support info structure describes how to | |
9725 | implement exception catchpoints with a slightly older version | |
9726 | of the Ada runtime. */ | |
9727 | ||
9728 | static const struct exception_support_info exception_support_info_fallback = | |
9729 | { | |
9730 | "__gnat_raise_nodefer_with_msg", /* catch_exception_sym */ | |
9731 | "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */ | |
9732 | "system__assertions__raise_assert_failure", /* catch_assert_sym */ | |
9733 | ada_unhandled_exception_name_addr_from_raise | |
9734 | }; | |
9735 | ||
9736 | /* For each executable, we sniff which exception info structure to use | |
9737 | and cache it in the following global variable. */ | |
9738 | ||
9739 | static const struct exception_support_info *exception_info = NULL; | |
9740 | ||
9741 | /* Inspect the Ada runtime and determine which exception info structure | |
9742 | should be used to provide support for exception catchpoints. | |
9743 | ||
9744 | This function will always set exception_info, or raise an error. */ | |
9745 | ||
9746 | static void | |
9747 | ada_exception_support_info_sniffer (void) | |
9748 | { | |
9749 | struct symbol *sym; | |
9750 | ||
9751 | /* If the exception info is already known, then no need to recompute it. */ | |
9752 | if (exception_info != NULL) | |
9753 | return; | |
9754 | ||
9755 | /* Check the latest (default) exception support info. */ | |
9756 | sym = standard_lookup (default_exception_support_info.catch_exception_sym, | |
9757 | NULL, VAR_DOMAIN); | |
9758 | if (sym != NULL) | |
9759 | { | |
9760 | exception_info = &default_exception_support_info; | |
9761 | return; | |
9762 | } | |
9763 | ||
9764 | /* Try our fallback exception suport info. */ | |
9765 | sym = standard_lookup (exception_support_info_fallback.catch_exception_sym, | |
9766 | NULL, VAR_DOMAIN); | |
9767 | if (sym != NULL) | |
9768 | { | |
9769 | exception_info = &exception_support_info_fallback; | |
9770 | return; | |
9771 | } | |
9772 | ||
9773 | /* Sometimes, it is normal for us to not be able to find the routine | |
9774 | we are looking for. This happens when the program is linked with | |
9775 | the shared version of the GNAT runtime, and the program has not been | |
9776 | started yet. Inform the user of these two possible causes if | |
9777 | applicable. */ | |
9778 | ||
9779 | if (ada_update_initial_language (language_unknown, NULL) != language_ada) | |
9780 | error (_("Unable to insert catchpoint. Is this an Ada main program?")); | |
9781 | ||
9782 | /* If the symbol does not exist, then check that the program is | |
9783 | already started, to make sure that shared libraries have been | |
9784 | loaded. If it is not started, this may mean that the symbol is | |
9785 | in a shared library. */ | |
9786 | ||
9787 | if (ptid_get_pid (inferior_ptid) == 0) | |
9788 | error (_("Unable to insert catchpoint. Try to start the program first.")); | |
9789 | ||
9790 | /* At this point, we know that we are debugging an Ada program and | |
9791 | that the inferior has been started, but we still are not able to | |
9792 | find the run-time symbols. That can mean that we are in | |
9793 | configurable run time mode, or that a-except as been optimized | |
9794 | out by the linker... In any case, at this point it is not worth | |
9795 | supporting this feature. */ | |
9796 | ||
9797 | error (_("Cannot insert catchpoints in this configuration.")); | |
9798 | } | |
9799 | ||
9800 | /* An observer of "executable_changed" events. | |
9801 | Its role is to clear certain cached values that need to be recomputed | |
9802 | each time a new executable is loaded by GDB. */ | |
9803 | ||
9804 | static void | |
9805 | ada_executable_changed_observer (void *unused) | |
9806 | { | |
9807 | /* If the executable changed, then it is possible that the Ada runtime | |
9808 | is different. So we need to invalidate the exception support info | |
9809 | cache. */ | |
9810 | exception_info = NULL; | |
9811 | } | |
9812 | ||
f7f9143b JB |
9813 | /* Return the name of the function at PC, NULL if could not find it. |
9814 | This function only checks the debugging information, not the symbol | |
9815 | table. */ | |
9816 | ||
9817 | static char * | |
9818 | function_name_from_pc (CORE_ADDR pc) | |
9819 | { | |
9820 | char *func_name; | |
9821 | ||
9822 | if (!find_pc_partial_function (pc, &func_name, NULL, NULL)) | |
9823 | return NULL; | |
9824 | ||
9825 | return func_name; | |
9826 | } | |
9827 | ||
9828 | /* True iff FRAME is very likely to be that of a function that is | |
9829 | part of the runtime system. This is all very heuristic, but is | |
9830 | intended to be used as advice as to what frames are uninteresting | |
9831 | to most users. */ | |
9832 | ||
9833 | static int | |
9834 | is_known_support_routine (struct frame_info *frame) | |
9835 | { | |
4ed6b5be | 9836 | struct symtab_and_line sal; |
f7f9143b JB |
9837 | char *func_name; |
9838 | int i; | |
f7f9143b | 9839 | |
4ed6b5be JB |
9840 | /* If this code does not have any debugging information (no symtab), |
9841 | This cannot be any user code. */ | |
f7f9143b | 9842 | |
4ed6b5be | 9843 | find_frame_sal (frame, &sal); |
f7f9143b JB |
9844 | if (sal.symtab == NULL) |
9845 | return 1; | |
9846 | ||
4ed6b5be JB |
9847 | /* If there is a symtab, but the associated source file cannot be |
9848 | located, then assume this is not user code: Selecting a frame | |
9849 | for which we cannot display the code would not be very helpful | |
9850 | for the user. This should also take care of case such as VxWorks | |
9851 | where the kernel has some debugging info provided for a few units. */ | |
f7f9143b | 9852 | |
9bbc9174 | 9853 | if (symtab_to_fullname (sal.symtab) == NULL) |
f7f9143b JB |
9854 | return 1; |
9855 | ||
4ed6b5be JB |
9856 | /* Check the unit filename againt the Ada runtime file naming. |
9857 | We also check the name of the objfile against the name of some | |
9858 | known system libraries that sometimes come with debugging info | |
9859 | too. */ | |
9860 | ||
f7f9143b JB |
9861 | for (i = 0; known_runtime_file_name_patterns[i] != NULL; i += 1) |
9862 | { | |
9863 | re_comp (known_runtime_file_name_patterns[i]); | |
9864 | if (re_exec (sal.symtab->filename)) | |
9865 | return 1; | |
4ed6b5be JB |
9866 | if (sal.symtab->objfile != NULL |
9867 | && re_exec (sal.symtab->objfile->name)) | |
9868 | return 1; | |
f7f9143b JB |
9869 | } |
9870 | ||
4ed6b5be | 9871 | /* Check whether the function is a GNAT-generated entity. */ |
f7f9143b | 9872 | |
4ed6b5be | 9873 | func_name = function_name_from_pc (get_frame_address_in_block (frame)); |
f7f9143b JB |
9874 | if (func_name == NULL) |
9875 | return 1; | |
9876 | ||
9877 | for (i = 0; known_auxiliary_function_name_patterns[i] != NULL; i += 1) | |
9878 | { | |
9879 | re_comp (known_auxiliary_function_name_patterns[i]); | |
9880 | if (re_exec (func_name)) | |
9881 | return 1; | |
9882 | } | |
9883 | ||
9884 | return 0; | |
9885 | } | |
9886 | ||
9887 | /* Find the first frame that contains debugging information and that is not | |
9888 | part of the Ada run-time, starting from FI and moving upward. */ | |
9889 | ||
9890 | static void | |
9891 | ada_find_printable_frame (struct frame_info *fi) | |
9892 | { | |
9893 | for (; fi != NULL; fi = get_prev_frame (fi)) | |
9894 | { | |
9895 | if (!is_known_support_routine (fi)) | |
9896 | { | |
9897 | select_frame (fi); | |
9898 | break; | |
9899 | } | |
9900 | } | |
9901 | ||
9902 | } | |
9903 | ||
9904 | /* Assuming that the inferior just triggered an unhandled exception | |
9905 | catchpoint, return the address in inferior memory where the name | |
9906 | of the exception is stored. | |
9907 | ||
9908 | Return zero if the address could not be computed. */ | |
9909 | ||
9910 | static CORE_ADDR | |
9911 | ada_unhandled_exception_name_addr (void) | |
0259addd JB |
9912 | { |
9913 | return parse_and_eval_address ("e.full_name"); | |
9914 | } | |
9915 | ||
9916 | /* Same as ada_unhandled_exception_name_addr, except that this function | |
9917 | should be used when the inferior uses an older version of the runtime, | |
9918 | where the exception name needs to be extracted from a specific frame | |
9919 | several frames up in the callstack. */ | |
9920 | ||
9921 | static CORE_ADDR | |
9922 | ada_unhandled_exception_name_addr_from_raise (void) | |
f7f9143b JB |
9923 | { |
9924 | int frame_level; | |
9925 | struct frame_info *fi; | |
9926 | ||
9927 | /* To determine the name of this exception, we need to select | |
9928 | the frame corresponding to RAISE_SYM_NAME. This frame is | |
9929 | at least 3 levels up, so we simply skip the first 3 frames | |
9930 | without checking the name of their associated function. */ | |
9931 | fi = get_current_frame (); | |
9932 | for (frame_level = 0; frame_level < 3; frame_level += 1) | |
9933 | if (fi != NULL) | |
9934 | fi = get_prev_frame (fi); | |
9935 | ||
9936 | while (fi != NULL) | |
9937 | { | |
9938 | const char *func_name = | |
9939 | function_name_from_pc (get_frame_address_in_block (fi)); | |
9940 | if (func_name != NULL | |
0259addd | 9941 | && strcmp (func_name, exception_info->catch_exception_sym) == 0) |
f7f9143b JB |
9942 | break; /* We found the frame we were looking for... */ |
9943 | fi = get_prev_frame (fi); | |
9944 | } | |
9945 | ||
9946 | if (fi == NULL) | |
9947 | return 0; | |
9948 | ||
9949 | select_frame (fi); | |
9950 | return parse_and_eval_address ("id.full_name"); | |
9951 | } | |
9952 | ||
9953 | /* Assuming the inferior just triggered an Ada exception catchpoint | |
9954 | (of any type), return the address in inferior memory where the name | |
9955 | of the exception is stored, if applicable. | |
9956 | ||
9957 | Return zero if the address could not be computed, or if not relevant. */ | |
9958 | ||
9959 | static CORE_ADDR | |
9960 | ada_exception_name_addr_1 (enum exception_catchpoint_kind ex, | |
9961 | struct breakpoint *b) | |
9962 | { | |
9963 | switch (ex) | |
9964 | { | |
9965 | case ex_catch_exception: | |
9966 | return (parse_and_eval_address ("e.full_name")); | |
9967 | break; | |
9968 | ||
9969 | case ex_catch_exception_unhandled: | |
0259addd | 9970 | return exception_info->unhandled_exception_name_addr (); |
f7f9143b JB |
9971 | break; |
9972 | ||
9973 | case ex_catch_assert: | |
9974 | return 0; /* Exception name is not relevant in this case. */ | |
9975 | break; | |
9976 | ||
9977 | default: | |
9978 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
9979 | break; | |
9980 | } | |
9981 | ||
9982 | return 0; /* Should never be reached. */ | |
9983 | } | |
9984 | ||
9985 | /* Same as ada_exception_name_addr_1, except that it intercepts and contains | |
9986 | any error that ada_exception_name_addr_1 might cause to be thrown. | |
9987 | When an error is intercepted, a warning with the error message is printed, | |
9988 | and zero is returned. */ | |
9989 | ||
9990 | static CORE_ADDR | |
9991 | ada_exception_name_addr (enum exception_catchpoint_kind ex, | |
9992 | struct breakpoint *b) | |
9993 | { | |
9994 | struct gdb_exception e; | |
9995 | CORE_ADDR result = 0; | |
9996 | ||
9997 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
9998 | { | |
9999 | result = ada_exception_name_addr_1 (ex, b); | |
10000 | } | |
10001 | ||
10002 | if (e.reason < 0) | |
10003 | { | |
10004 | warning (_("failed to get exception name: %s"), e.message); | |
10005 | return 0; | |
10006 | } | |
10007 | ||
10008 | return result; | |
10009 | } | |
10010 | ||
10011 | /* Implement the PRINT_IT method in the breakpoint_ops structure | |
10012 | for all exception catchpoint kinds. */ | |
10013 | ||
10014 | static enum print_stop_action | |
10015 | print_it_exception (enum exception_catchpoint_kind ex, struct breakpoint *b) | |
10016 | { | |
10017 | const CORE_ADDR addr = ada_exception_name_addr (ex, b); | |
10018 | char exception_name[256]; | |
10019 | ||
10020 | if (addr != 0) | |
10021 | { | |
10022 | read_memory (addr, exception_name, sizeof (exception_name) - 1); | |
10023 | exception_name [sizeof (exception_name) - 1] = '\0'; | |
10024 | } | |
10025 | ||
10026 | ada_find_printable_frame (get_current_frame ()); | |
10027 | ||
10028 | annotate_catchpoint (b->number); | |
10029 | switch (ex) | |
10030 | { | |
10031 | case ex_catch_exception: | |
10032 | if (addr != 0) | |
10033 | printf_filtered (_("\nCatchpoint %d, %s at "), | |
10034 | b->number, exception_name); | |
10035 | else | |
10036 | printf_filtered (_("\nCatchpoint %d, exception at "), b->number); | |
10037 | break; | |
10038 | case ex_catch_exception_unhandled: | |
10039 | if (addr != 0) | |
10040 | printf_filtered (_("\nCatchpoint %d, unhandled %s at "), | |
10041 | b->number, exception_name); | |
10042 | else | |
10043 | printf_filtered (_("\nCatchpoint %d, unhandled exception at "), | |
10044 | b->number); | |
10045 | break; | |
10046 | case ex_catch_assert: | |
10047 | printf_filtered (_("\nCatchpoint %d, failed assertion at "), | |
10048 | b->number); | |
10049 | break; | |
10050 | } | |
10051 | ||
10052 | return PRINT_SRC_AND_LOC; | |
10053 | } | |
10054 | ||
10055 | /* Implement the PRINT_ONE method in the breakpoint_ops structure | |
10056 | for all exception catchpoint kinds. */ | |
10057 | ||
10058 | static void | |
10059 | print_one_exception (enum exception_catchpoint_kind ex, | |
10060 | struct breakpoint *b, CORE_ADDR *last_addr) | |
10061 | { | |
10062 | if (addressprint) | |
10063 | { | |
10064 | annotate_field (4); | |
10065 | ui_out_field_core_addr (uiout, "addr", b->loc->address); | |
10066 | } | |
10067 | ||
10068 | annotate_field (5); | |
10069 | *last_addr = b->loc->address; | |
10070 | switch (ex) | |
10071 | { | |
10072 | case ex_catch_exception: | |
10073 | if (b->exp_string != NULL) | |
10074 | { | |
10075 | char *msg = xstrprintf (_("`%s' Ada exception"), b->exp_string); | |
10076 | ||
10077 | ui_out_field_string (uiout, "what", msg); | |
10078 | xfree (msg); | |
10079 | } | |
10080 | else | |
10081 | ui_out_field_string (uiout, "what", "all Ada exceptions"); | |
10082 | ||
10083 | break; | |
10084 | ||
10085 | case ex_catch_exception_unhandled: | |
10086 | ui_out_field_string (uiout, "what", "unhandled Ada exceptions"); | |
10087 | break; | |
10088 | ||
10089 | case ex_catch_assert: | |
10090 | ui_out_field_string (uiout, "what", "failed Ada assertions"); | |
10091 | break; | |
10092 | ||
10093 | default: | |
10094 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
10095 | break; | |
10096 | } | |
10097 | } | |
10098 | ||
10099 | /* Implement the PRINT_MENTION method in the breakpoint_ops structure | |
10100 | for all exception catchpoint kinds. */ | |
10101 | ||
10102 | static void | |
10103 | print_mention_exception (enum exception_catchpoint_kind ex, | |
10104 | struct breakpoint *b) | |
10105 | { | |
10106 | switch (ex) | |
10107 | { | |
10108 | case ex_catch_exception: | |
10109 | if (b->exp_string != NULL) | |
10110 | printf_filtered (_("Catchpoint %d: `%s' Ada exception"), | |
10111 | b->number, b->exp_string); | |
10112 | else | |
10113 | printf_filtered (_("Catchpoint %d: all Ada exceptions"), b->number); | |
10114 | ||
10115 | break; | |
10116 | ||
10117 | case ex_catch_exception_unhandled: | |
10118 | printf_filtered (_("Catchpoint %d: unhandled Ada exceptions"), | |
10119 | b->number); | |
10120 | break; | |
10121 | ||
10122 | case ex_catch_assert: | |
10123 | printf_filtered (_("Catchpoint %d: failed Ada assertions"), b->number); | |
10124 | break; | |
10125 | ||
10126 | default: | |
10127 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
10128 | break; | |
10129 | } | |
10130 | } | |
10131 | ||
10132 | /* Virtual table for "catch exception" breakpoints. */ | |
10133 | ||
10134 | static enum print_stop_action | |
10135 | print_it_catch_exception (struct breakpoint *b) | |
10136 | { | |
10137 | return print_it_exception (ex_catch_exception, b); | |
10138 | } | |
10139 | ||
10140 | static void | |
10141 | print_one_catch_exception (struct breakpoint *b, CORE_ADDR *last_addr) | |
10142 | { | |
10143 | print_one_exception (ex_catch_exception, b, last_addr); | |
10144 | } | |
10145 | ||
10146 | static void | |
10147 | print_mention_catch_exception (struct breakpoint *b) | |
10148 | { | |
10149 | print_mention_exception (ex_catch_exception, b); | |
10150 | } | |
10151 | ||
10152 | static struct breakpoint_ops catch_exception_breakpoint_ops = | |
10153 | { | |
10154 | print_it_catch_exception, | |
10155 | print_one_catch_exception, | |
10156 | print_mention_catch_exception | |
10157 | }; | |
10158 | ||
10159 | /* Virtual table for "catch exception unhandled" breakpoints. */ | |
10160 | ||
10161 | static enum print_stop_action | |
10162 | print_it_catch_exception_unhandled (struct breakpoint *b) | |
10163 | { | |
10164 | return print_it_exception (ex_catch_exception_unhandled, b); | |
10165 | } | |
10166 | ||
10167 | static void | |
10168 | print_one_catch_exception_unhandled (struct breakpoint *b, CORE_ADDR *last_addr) | |
10169 | { | |
10170 | print_one_exception (ex_catch_exception_unhandled, b, last_addr); | |
10171 | } | |
10172 | ||
10173 | static void | |
10174 | print_mention_catch_exception_unhandled (struct breakpoint *b) | |
10175 | { | |
10176 | print_mention_exception (ex_catch_exception_unhandled, b); | |
10177 | } | |
10178 | ||
10179 | static struct breakpoint_ops catch_exception_unhandled_breakpoint_ops = { | |
10180 | print_it_catch_exception_unhandled, | |
10181 | print_one_catch_exception_unhandled, | |
10182 | print_mention_catch_exception_unhandled | |
10183 | }; | |
10184 | ||
10185 | /* Virtual table for "catch assert" breakpoints. */ | |
10186 | ||
10187 | static enum print_stop_action | |
10188 | print_it_catch_assert (struct breakpoint *b) | |
10189 | { | |
10190 | return print_it_exception (ex_catch_assert, b); | |
10191 | } | |
10192 | ||
10193 | static void | |
10194 | print_one_catch_assert (struct breakpoint *b, CORE_ADDR *last_addr) | |
10195 | { | |
10196 | print_one_exception (ex_catch_assert, b, last_addr); | |
10197 | } | |
10198 | ||
10199 | static void | |
10200 | print_mention_catch_assert (struct breakpoint *b) | |
10201 | { | |
10202 | print_mention_exception (ex_catch_assert, b); | |
10203 | } | |
10204 | ||
10205 | static struct breakpoint_ops catch_assert_breakpoint_ops = { | |
10206 | print_it_catch_assert, | |
10207 | print_one_catch_assert, | |
10208 | print_mention_catch_assert | |
10209 | }; | |
10210 | ||
10211 | /* Return non-zero if B is an Ada exception catchpoint. */ | |
10212 | ||
10213 | int | |
10214 | ada_exception_catchpoint_p (struct breakpoint *b) | |
10215 | { | |
10216 | return (b->ops == &catch_exception_breakpoint_ops | |
10217 | || b->ops == &catch_exception_unhandled_breakpoint_ops | |
10218 | || b->ops == &catch_assert_breakpoint_ops); | |
10219 | } | |
10220 | ||
f7f9143b JB |
10221 | /* Return a newly allocated copy of the first space-separated token |
10222 | in ARGSP, and then adjust ARGSP to point immediately after that | |
10223 | token. | |
10224 | ||
10225 | Return NULL if ARGPS does not contain any more tokens. */ | |
10226 | ||
10227 | static char * | |
10228 | ada_get_next_arg (char **argsp) | |
10229 | { | |
10230 | char *args = *argsp; | |
10231 | char *end; | |
10232 | char *result; | |
10233 | ||
10234 | /* Skip any leading white space. */ | |
10235 | ||
10236 | while (isspace (*args)) | |
10237 | args++; | |
10238 | ||
10239 | if (args[0] == '\0') | |
10240 | return NULL; /* No more arguments. */ | |
10241 | ||
10242 | /* Find the end of the current argument. */ | |
10243 | ||
10244 | end = args; | |
10245 | while (*end != '\0' && !isspace (*end)) | |
10246 | end++; | |
10247 | ||
10248 | /* Adjust ARGSP to point to the start of the next argument. */ | |
10249 | ||
10250 | *argsp = end; | |
10251 | ||
10252 | /* Make a copy of the current argument and return it. */ | |
10253 | ||
10254 | result = xmalloc (end - args + 1); | |
10255 | strncpy (result, args, end - args); | |
10256 | result[end - args] = '\0'; | |
10257 | ||
10258 | return result; | |
10259 | } | |
10260 | ||
10261 | /* Split the arguments specified in a "catch exception" command. | |
10262 | Set EX to the appropriate catchpoint type. | |
10263 | Set EXP_STRING to the name of the specific exception if | |
10264 | specified by the user. */ | |
10265 | ||
10266 | static void | |
10267 | catch_ada_exception_command_split (char *args, | |
10268 | enum exception_catchpoint_kind *ex, | |
10269 | char **exp_string) | |
10270 | { | |
10271 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); | |
10272 | char *exception_name; | |
10273 | ||
10274 | exception_name = ada_get_next_arg (&args); | |
10275 | make_cleanup (xfree, exception_name); | |
10276 | ||
10277 | /* Check that we do not have any more arguments. Anything else | |
10278 | is unexpected. */ | |
10279 | ||
10280 | while (isspace (*args)) | |
10281 | args++; | |
10282 | ||
10283 | if (args[0] != '\0') | |
10284 | error (_("Junk at end of expression")); | |
10285 | ||
10286 | discard_cleanups (old_chain); | |
10287 | ||
10288 | if (exception_name == NULL) | |
10289 | { | |
10290 | /* Catch all exceptions. */ | |
10291 | *ex = ex_catch_exception; | |
10292 | *exp_string = NULL; | |
10293 | } | |
10294 | else if (strcmp (exception_name, "unhandled") == 0) | |
10295 | { | |
10296 | /* Catch unhandled exceptions. */ | |
10297 | *ex = ex_catch_exception_unhandled; | |
10298 | *exp_string = NULL; | |
10299 | } | |
10300 | else | |
10301 | { | |
10302 | /* Catch a specific exception. */ | |
10303 | *ex = ex_catch_exception; | |
10304 | *exp_string = exception_name; | |
10305 | } | |
10306 | } | |
10307 | ||
10308 | /* Return the name of the symbol on which we should break in order to | |
10309 | implement a catchpoint of the EX kind. */ | |
10310 | ||
10311 | static const char * | |
10312 | ada_exception_sym_name (enum exception_catchpoint_kind ex) | |
10313 | { | |
0259addd JB |
10314 | gdb_assert (exception_info != NULL); |
10315 | ||
f7f9143b JB |
10316 | switch (ex) |
10317 | { | |
10318 | case ex_catch_exception: | |
0259addd | 10319 | return (exception_info->catch_exception_sym); |
f7f9143b JB |
10320 | break; |
10321 | case ex_catch_exception_unhandled: | |
0259addd | 10322 | return (exception_info->catch_exception_unhandled_sym); |
f7f9143b JB |
10323 | break; |
10324 | case ex_catch_assert: | |
0259addd | 10325 | return (exception_info->catch_assert_sym); |
f7f9143b JB |
10326 | break; |
10327 | default: | |
10328 | internal_error (__FILE__, __LINE__, | |
10329 | _("unexpected catchpoint kind (%d)"), ex); | |
10330 | } | |
10331 | } | |
10332 | ||
10333 | /* Return the breakpoint ops "virtual table" used for catchpoints | |
10334 | of the EX kind. */ | |
10335 | ||
10336 | static struct breakpoint_ops * | |
4b9eee8c | 10337 | ada_exception_breakpoint_ops (enum exception_catchpoint_kind ex) |
f7f9143b JB |
10338 | { |
10339 | switch (ex) | |
10340 | { | |
10341 | case ex_catch_exception: | |
10342 | return (&catch_exception_breakpoint_ops); | |
10343 | break; | |
10344 | case ex_catch_exception_unhandled: | |
10345 | return (&catch_exception_unhandled_breakpoint_ops); | |
10346 | break; | |
10347 | case ex_catch_assert: | |
10348 | return (&catch_assert_breakpoint_ops); | |
10349 | break; | |
10350 | default: | |
10351 | internal_error (__FILE__, __LINE__, | |
10352 | _("unexpected catchpoint kind (%d)"), ex); | |
10353 | } | |
10354 | } | |
10355 | ||
10356 | /* Return the condition that will be used to match the current exception | |
10357 | being raised with the exception that the user wants to catch. This | |
10358 | assumes that this condition is used when the inferior just triggered | |
10359 | an exception catchpoint. | |
10360 | ||
10361 | The string returned is a newly allocated string that needs to be | |
10362 | deallocated later. */ | |
10363 | ||
10364 | static char * | |
10365 | ada_exception_catchpoint_cond_string (const char *exp_string) | |
10366 | { | |
10367 | return xstrprintf ("long_integer (e) = long_integer (&%s)", exp_string); | |
10368 | } | |
10369 | ||
10370 | /* Return the expression corresponding to COND_STRING evaluated at SAL. */ | |
10371 | ||
10372 | static struct expression * | |
10373 | ada_parse_catchpoint_condition (char *cond_string, | |
10374 | struct symtab_and_line sal) | |
10375 | { | |
10376 | return (parse_exp_1 (&cond_string, block_for_pc (sal.pc), 0)); | |
10377 | } | |
10378 | ||
10379 | /* Return the symtab_and_line that should be used to insert an exception | |
10380 | catchpoint of the TYPE kind. | |
10381 | ||
10382 | EX_STRING should contain the name of a specific exception | |
10383 | that the catchpoint should catch, or NULL otherwise. | |
10384 | ||
10385 | The idea behind all the remaining parameters is that their names match | |
10386 | the name of certain fields in the breakpoint structure that are used to | |
10387 | handle exception catchpoints. This function returns the value to which | |
10388 | these fields should be set, depending on the type of catchpoint we need | |
10389 | to create. | |
10390 | ||
10391 | If COND and COND_STRING are both non-NULL, any value they might | |
10392 | hold will be free'ed, and then replaced by newly allocated ones. | |
10393 | These parameters are left untouched otherwise. */ | |
10394 | ||
10395 | static struct symtab_and_line | |
10396 | ada_exception_sal (enum exception_catchpoint_kind ex, char *exp_string, | |
10397 | char **addr_string, char **cond_string, | |
10398 | struct expression **cond, struct breakpoint_ops **ops) | |
10399 | { | |
10400 | const char *sym_name; | |
10401 | struct symbol *sym; | |
10402 | struct symtab_and_line sal; | |
10403 | ||
0259addd JB |
10404 | /* First, find out which exception support info to use. */ |
10405 | ada_exception_support_info_sniffer (); | |
10406 | ||
10407 | /* Then lookup the function on which we will break in order to catch | |
f7f9143b JB |
10408 | the Ada exceptions requested by the user. */ |
10409 | ||
10410 | sym_name = ada_exception_sym_name (ex); | |
10411 | sym = standard_lookup (sym_name, NULL, VAR_DOMAIN); | |
10412 | ||
10413 | /* The symbol we're looking up is provided by a unit in the GNAT runtime | |
10414 | that should be compiled with debugging information. As a result, we | |
10415 | expect to find that symbol in the symtabs. If we don't find it, then | |
10416 | the target most likely does not support Ada exceptions, or we cannot | |
10417 | insert exception breakpoints yet, because the GNAT runtime hasn't been | |
10418 | loaded yet. */ | |
10419 | ||
10420 | /* brobecker/2006-12-26: It is conceivable that the runtime was compiled | |
10421 | in such a way that no debugging information is produced for the symbol | |
10422 | we are looking for. In this case, we could search the minimal symbols | |
10423 | as a fall-back mechanism. This would still be operating in degraded | |
10424 | mode, however, as we would still be missing the debugging information | |
10425 | that is needed in order to extract the name of the exception being | |
10426 | raised (this name is printed in the catchpoint message, and is also | |
10427 | used when trying to catch a specific exception). We do not handle | |
10428 | this case for now. */ | |
10429 | ||
10430 | if (sym == NULL) | |
0259addd | 10431 | error (_("Unable to break on '%s' in this configuration."), sym_name); |
f7f9143b JB |
10432 | |
10433 | /* Make sure that the symbol we found corresponds to a function. */ | |
10434 | if (SYMBOL_CLASS (sym) != LOC_BLOCK) | |
10435 | error (_("Symbol \"%s\" is not a function (class = %d)"), | |
10436 | sym_name, SYMBOL_CLASS (sym)); | |
10437 | ||
10438 | sal = find_function_start_sal (sym, 1); | |
10439 | ||
10440 | /* Set ADDR_STRING. */ | |
10441 | ||
10442 | *addr_string = xstrdup (sym_name); | |
10443 | ||
10444 | /* Set the COND and COND_STRING (if not NULL). */ | |
10445 | ||
10446 | if (cond_string != NULL && cond != NULL) | |
10447 | { | |
10448 | if (*cond_string != NULL) | |
10449 | { | |
10450 | xfree (*cond_string); | |
10451 | *cond_string = NULL; | |
10452 | } | |
10453 | if (*cond != NULL) | |
10454 | { | |
10455 | xfree (*cond); | |
10456 | *cond = NULL; | |
10457 | } | |
10458 | if (exp_string != NULL) | |
10459 | { | |
10460 | *cond_string = ada_exception_catchpoint_cond_string (exp_string); | |
10461 | *cond = ada_parse_catchpoint_condition (*cond_string, sal); | |
10462 | } | |
10463 | } | |
10464 | ||
10465 | /* Set OPS. */ | |
4b9eee8c | 10466 | *ops = ada_exception_breakpoint_ops (ex); |
f7f9143b JB |
10467 | |
10468 | return sal; | |
10469 | } | |
10470 | ||
10471 | /* Parse the arguments (ARGS) of the "catch exception" command. | |
10472 | ||
10473 | Set TYPE to the appropriate exception catchpoint type. | |
10474 | If the user asked the catchpoint to catch only a specific | |
10475 | exception, then save the exception name in ADDR_STRING. | |
10476 | ||
10477 | See ada_exception_sal for a description of all the remaining | |
10478 | function arguments of this function. */ | |
10479 | ||
10480 | struct symtab_and_line | |
10481 | ada_decode_exception_location (char *args, char **addr_string, | |
10482 | char **exp_string, char **cond_string, | |
10483 | struct expression **cond, | |
10484 | struct breakpoint_ops **ops) | |
10485 | { | |
10486 | enum exception_catchpoint_kind ex; | |
10487 | ||
10488 | catch_ada_exception_command_split (args, &ex, exp_string); | |
10489 | return ada_exception_sal (ex, *exp_string, addr_string, cond_string, | |
10490 | cond, ops); | |
10491 | } | |
10492 | ||
10493 | struct symtab_and_line | |
10494 | ada_decode_assert_location (char *args, char **addr_string, | |
10495 | struct breakpoint_ops **ops) | |
10496 | { | |
10497 | /* Check that no argument where provided at the end of the command. */ | |
10498 | ||
10499 | if (args != NULL) | |
10500 | { | |
10501 | while (isspace (*args)) | |
10502 | args++; | |
10503 | if (*args != '\0') | |
10504 | error (_("Junk at end of arguments.")); | |
10505 | } | |
10506 | ||
10507 | return ada_exception_sal (ex_catch_assert, NULL, addr_string, NULL, NULL, | |
10508 | ops); | |
10509 | } | |
10510 | ||
4c4b4cd2 PH |
10511 | /* Operators */ |
10512 | /* Information about operators given special treatment in functions | |
10513 | below. */ | |
10514 | /* Format: OP_DEFN (<operator>, <operator length>, <# args>, <binop>). */ | |
10515 | ||
10516 | #define ADA_OPERATORS \ | |
10517 | OP_DEFN (OP_VAR_VALUE, 4, 0, 0) \ | |
10518 | OP_DEFN (BINOP_IN_BOUNDS, 3, 2, 0) \ | |
10519 | OP_DEFN (TERNOP_IN_RANGE, 1, 3, 0) \ | |
10520 | OP_DEFN (OP_ATR_FIRST, 1, 2, 0) \ | |
10521 | OP_DEFN (OP_ATR_LAST, 1, 2, 0) \ | |
10522 | OP_DEFN (OP_ATR_LENGTH, 1, 2, 0) \ | |
10523 | OP_DEFN (OP_ATR_IMAGE, 1, 2, 0) \ | |
10524 | OP_DEFN (OP_ATR_MAX, 1, 3, 0) \ | |
10525 | OP_DEFN (OP_ATR_MIN, 1, 3, 0) \ | |
10526 | OP_DEFN (OP_ATR_MODULUS, 1, 1, 0) \ | |
10527 | OP_DEFN (OP_ATR_POS, 1, 2, 0) \ | |
10528 | OP_DEFN (OP_ATR_SIZE, 1, 1, 0) \ | |
10529 | OP_DEFN (OP_ATR_TAG, 1, 1, 0) \ | |
10530 | OP_DEFN (OP_ATR_VAL, 1, 2, 0) \ | |
10531 | OP_DEFN (UNOP_QUAL, 3, 1, 0) \ | |
52ce6436 PH |
10532 | OP_DEFN (UNOP_IN_RANGE, 3, 1, 0) \ |
10533 | OP_DEFN (OP_OTHERS, 1, 1, 0) \ | |
10534 | OP_DEFN (OP_POSITIONAL, 3, 1, 0) \ | |
10535 | OP_DEFN (OP_DISCRETE_RANGE, 1, 2, 0) | |
4c4b4cd2 PH |
10536 | |
10537 | static void | |
10538 | ada_operator_length (struct expression *exp, int pc, int *oplenp, int *argsp) | |
10539 | { | |
10540 | switch (exp->elts[pc - 1].opcode) | |
10541 | { | |
76a01679 | 10542 | default: |
4c4b4cd2 PH |
10543 | operator_length_standard (exp, pc, oplenp, argsp); |
10544 | break; | |
10545 | ||
10546 | #define OP_DEFN(op, len, args, binop) \ | |
10547 | case op: *oplenp = len; *argsp = args; break; | |
10548 | ADA_OPERATORS; | |
10549 | #undef OP_DEFN | |
52ce6436 PH |
10550 | |
10551 | case OP_AGGREGATE: | |
10552 | *oplenp = 3; | |
10553 | *argsp = longest_to_int (exp->elts[pc - 2].longconst); | |
10554 | break; | |
10555 | ||
10556 | case OP_CHOICES: | |
10557 | *oplenp = 3; | |
10558 | *argsp = longest_to_int (exp->elts[pc - 2].longconst) + 1; | |
10559 | break; | |
4c4b4cd2 PH |
10560 | } |
10561 | } | |
10562 | ||
10563 | static char * | |
10564 | ada_op_name (enum exp_opcode opcode) | |
10565 | { | |
10566 | switch (opcode) | |
10567 | { | |
76a01679 | 10568 | default: |
4c4b4cd2 | 10569 | return op_name_standard (opcode); |
52ce6436 | 10570 | |
4c4b4cd2 PH |
10571 | #define OP_DEFN(op, len, args, binop) case op: return #op; |
10572 | ADA_OPERATORS; | |
10573 | #undef OP_DEFN | |
52ce6436 PH |
10574 | |
10575 | case OP_AGGREGATE: | |
10576 | return "OP_AGGREGATE"; | |
10577 | case OP_CHOICES: | |
10578 | return "OP_CHOICES"; | |
10579 | case OP_NAME: | |
10580 | return "OP_NAME"; | |
4c4b4cd2 PH |
10581 | } |
10582 | } | |
10583 | ||
10584 | /* As for operator_length, but assumes PC is pointing at the first | |
10585 | element of the operator, and gives meaningful results only for the | |
52ce6436 | 10586 | Ada-specific operators, returning 0 for *OPLENP and *ARGSP otherwise. */ |
4c4b4cd2 PH |
10587 | |
10588 | static void | |
76a01679 JB |
10589 | ada_forward_operator_length (struct expression *exp, int pc, |
10590 | int *oplenp, int *argsp) | |
4c4b4cd2 | 10591 | { |
76a01679 | 10592 | switch (exp->elts[pc].opcode) |
4c4b4cd2 PH |
10593 | { |
10594 | default: | |
10595 | *oplenp = *argsp = 0; | |
10596 | break; | |
52ce6436 | 10597 | |
4c4b4cd2 PH |
10598 | #define OP_DEFN(op, len, args, binop) \ |
10599 | case op: *oplenp = len; *argsp = args; break; | |
10600 | ADA_OPERATORS; | |
10601 | #undef OP_DEFN | |
52ce6436 PH |
10602 | |
10603 | case OP_AGGREGATE: | |
10604 | *oplenp = 3; | |
10605 | *argsp = longest_to_int (exp->elts[pc + 1].longconst); | |
10606 | break; | |
10607 | ||
10608 | case OP_CHOICES: | |
10609 | *oplenp = 3; | |
10610 | *argsp = longest_to_int (exp->elts[pc + 1].longconst) + 1; | |
10611 | break; | |
10612 | ||
10613 | case OP_STRING: | |
10614 | case OP_NAME: | |
10615 | { | |
10616 | int len = longest_to_int (exp->elts[pc + 1].longconst); | |
10617 | *oplenp = 4 + BYTES_TO_EXP_ELEM (len + 1); | |
10618 | *argsp = 0; | |
10619 | break; | |
10620 | } | |
4c4b4cd2 PH |
10621 | } |
10622 | } | |
10623 | ||
10624 | static int | |
10625 | ada_dump_subexp_body (struct expression *exp, struct ui_file *stream, int elt) | |
10626 | { | |
10627 | enum exp_opcode op = exp->elts[elt].opcode; | |
10628 | int oplen, nargs; | |
10629 | int pc = elt; | |
10630 | int i; | |
76a01679 | 10631 | |
4c4b4cd2 PH |
10632 | ada_forward_operator_length (exp, elt, &oplen, &nargs); |
10633 | ||
76a01679 | 10634 | switch (op) |
4c4b4cd2 | 10635 | { |
76a01679 | 10636 | /* Ada attributes ('Foo). */ |
4c4b4cd2 PH |
10637 | case OP_ATR_FIRST: |
10638 | case OP_ATR_LAST: | |
10639 | case OP_ATR_LENGTH: | |
10640 | case OP_ATR_IMAGE: | |
10641 | case OP_ATR_MAX: | |
10642 | case OP_ATR_MIN: | |
10643 | case OP_ATR_MODULUS: | |
10644 | case OP_ATR_POS: | |
10645 | case OP_ATR_SIZE: | |
10646 | case OP_ATR_TAG: | |
10647 | case OP_ATR_VAL: | |
10648 | break; | |
10649 | ||
10650 | case UNOP_IN_RANGE: | |
10651 | case UNOP_QUAL: | |
323e0a4a AC |
10652 | /* XXX: gdb_sprint_host_address, type_sprint */ |
10653 | fprintf_filtered (stream, _("Type @")); | |
4c4b4cd2 PH |
10654 | gdb_print_host_address (exp->elts[pc + 1].type, stream); |
10655 | fprintf_filtered (stream, " ("); | |
10656 | type_print (exp->elts[pc + 1].type, NULL, stream, 0); | |
10657 | fprintf_filtered (stream, ")"); | |
10658 | break; | |
10659 | case BINOP_IN_BOUNDS: | |
52ce6436 PH |
10660 | fprintf_filtered (stream, " (%d)", |
10661 | longest_to_int (exp->elts[pc + 2].longconst)); | |
4c4b4cd2 PH |
10662 | break; |
10663 | case TERNOP_IN_RANGE: | |
10664 | break; | |
10665 | ||
52ce6436 PH |
10666 | case OP_AGGREGATE: |
10667 | case OP_OTHERS: | |
10668 | case OP_DISCRETE_RANGE: | |
10669 | case OP_POSITIONAL: | |
10670 | case OP_CHOICES: | |
10671 | break; | |
10672 | ||
10673 | case OP_NAME: | |
10674 | case OP_STRING: | |
10675 | { | |
10676 | char *name = &exp->elts[elt + 2].string; | |
10677 | int len = longest_to_int (exp->elts[elt + 1].longconst); | |
10678 | fprintf_filtered (stream, "Text: `%.*s'", len, name); | |
10679 | break; | |
10680 | } | |
10681 | ||
4c4b4cd2 PH |
10682 | default: |
10683 | return dump_subexp_body_standard (exp, stream, elt); | |
10684 | } | |
10685 | ||
10686 | elt += oplen; | |
10687 | for (i = 0; i < nargs; i += 1) | |
10688 | elt = dump_subexp (exp, stream, elt); | |
10689 | ||
10690 | return elt; | |
10691 | } | |
10692 | ||
10693 | /* The Ada extension of print_subexp (q.v.). */ | |
10694 | ||
76a01679 JB |
10695 | static void |
10696 | ada_print_subexp (struct expression *exp, int *pos, | |
10697 | struct ui_file *stream, enum precedence prec) | |
4c4b4cd2 | 10698 | { |
52ce6436 | 10699 | int oplen, nargs, i; |
4c4b4cd2 PH |
10700 | int pc = *pos; |
10701 | enum exp_opcode op = exp->elts[pc].opcode; | |
10702 | ||
10703 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
10704 | ||
52ce6436 | 10705 | *pos += oplen; |
4c4b4cd2 PH |
10706 | switch (op) |
10707 | { | |
10708 | default: | |
52ce6436 | 10709 | *pos -= oplen; |
4c4b4cd2 PH |
10710 | print_subexp_standard (exp, pos, stream, prec); |
10711 | return; | |
10712 | ||
10713 | case OP_VAR_VALUE: | |
4c4b4cd2 PH |
10714 | fputs_filtered (SYMBOL_NATURAL_NAME (exp->elts[pc + 2].symbol), stream); |
10715 | return; | |
10716 | ||
10717 | case BINOP_IN_BOUNDS: | |
323e0a4a | 10718 | /* XXX: sprint_subexp */ |
4c4b4cd2 | 10719 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 10720 | fputs_filtered (" in ", stream); |
4c4b4cd2 | 10721 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 10722 | fputs_filtered ("'range", stream); |
4c4b4cd2 | 10723 | if (exp->elts[pc + 1].longconst > 1) |
76a01679 JB |
10724 | fprintf_filtered (stream, "(%ld)", |
10725 | (long) exp->elts[pc + 1].longconst); | |
4c4b4cd2 PH |
10726 | return; |
10727 | ||
10728 | case TERNOP_IN_RANGE: | |
4c4b4cd2 | 10729 | if (prec >= PREC_EQUAL) |
76a01679 | 10730 | fputs_filtered ("(", stream); |
323e0a4a | 10731 | /* XXX: sprint_subexp */ |
4c4b4cd2 | 10732 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 10733 | fputs_filtered (" in ", stream); |
4c4b4cd2 PH |
10734 | print_subexp (exp, pos, stream, PREC_EQUAL); |
10735 | fputs_filtered (" .. ", stream); | |
10736 | print_subexp (exp, pos, stream, PREC_EQUAL); | |
10737 | if (prec >= PREC_EQUAL) | |
76a01679 JB |
10738 | fputs_filtered (")", stream); |
10739 | return; | |
4c4b4cd2 PH |
10740 | |
10741 | case OP_ATR_FIRST: | |
10742 | case OP_ATR_LAST: | |
10743 | case OP_ATR_LENGTH: | |
10744 | case OP_ATR_IMAGE: | |
10745 | case OP_ATR_MAX: | |
10746 | case OP_ATR_MIN: | |
10747 | case OP_ATR_MODULUS: | |
10748 | case OP_ATR_POS: | |
10749 | case OP_ATR_SIZE: | |
10750 | case OP_ATR_TAG: | |
10751 | case OP_ATR_VAL: | |
4c4b4cd2 | 10752 | if (exp->elts[*pos].opcode == OP_TYPE) |
76a01679 JB |
10753 | { |
10754 | if (TYPE_CODE (exp->elts[*pos + 1].type) != TYPE_CODE_VOID) | |
10755 | LA_PRINT_TYPE (exp->elts[*pos + 1].type, "", stream, 0, 0); | |
10756 | *pos += 3; | |
10757 | } | |
4c4b4cd2 | 10758 | else |
76a01679 | 10759 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
4c4b4cd2 PH |
10760 | fprintf_filtered (stream, "'%s", ada_attribute_name (op)); |
10761 | if (nargs > 1) | |
76a01679 JB |
10762 | { |
10763 | int tem; | |
10764 | for (tem = 1; tem < nargs; tem += 1) | |
10765 | { | |
10766 | fputs_filtered ((tem == 1) ? " (" : ", ", stream); | |
10767 | print_subexp (exp, pos, stream, PREC_ABOVE_COMMA); | |
10768 | } | |
10769 | fputs_filtered (")", stream); | |
10770 | } | |
4c4b4cd2 | 10771 | return; |
14f9c5c9 | 10772 | |
4c4b4cd2 | 10773 | case UNOP_QUAL: |
4c4b4cd2 PH |
10774 | type_print (exp->elts[pc + 1].type, "", stream, 0); |
10775 | fputs_filtered ("'(", stream); | |
10776 | print_subexp (exp, pos, stream, PREC_PREFIX); | |
10777 | fputs_filtered (")", stream); | |
10778 | return; | |
14f9c5c9 | 10779 | |
4c4b4cd2 | 10780 | case UNOP_IN_RANGE: |
323e0a4a | 10781 | /* XXX: sprint_subexp */ |
4c4b4cd2 | 10782 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 10783 | fputs_filtered (" in ", stream); |
4c4b4cd2 PH |
10784 | LA_PRINT_TYPE (exp->elts[pc + 1].type, "", stream, 1, 0); |
10785 | return; | |
52ce6436 PH |
10786 | |
10787 | case OP_DISCRETE_RANGE: | |
10788 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10789 | fputs_filtered ("..", stream); | |
10790 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10791 | return; | |
10792 | ||
10793 | case OP_OTHERS: | |
10794 | fputs_filtered ("others => ", stream); | |
10795 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10796 | return; | |
10797 | ||
10798 | case OP_CHOICES: | |
10799 | for (i = 0; i < nargs-1; i += 1) | |
10800 | { | |
10801 | if (i > 0) | |
10802 | fputs_filtered ("|", stream); | |
10803 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10804 | } | |
10805 | fputs_filtered (" => ", stream); | |
10806 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10807 | return; | |
10808 | ||
10809 | case OP_POSITIONAL: | |
10810 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10811 | return; | |
10812 | ||
10813 | case OP_AGGREGATE: | |
10814 | fputs_filtered ("(", stream); | |
10815 | for (i = 0; i < nargs; i += 1) | |
10816 | { | |
10817 | if (i > 0) | |
10818 | fputs_filtered (", ", stream); | |
10819 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10820 | } | |
10821 | fputs_filtered (")", stream); | |
10822 | return; | |
4c4b4cd2 PH |
10823 | } |
10824 | } | |
14f9c5c9 AS |
10825 | |
10826 | /* Table mapping opcodes into strings for printing operators | |
10827 | and precedences of the operators. */ | |
10828 | ||
d2e4a39e AS |
10829 | static const struct op_print ada_op_print_tab[] = { |
10830 | {":=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
10831 | {"or else", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
10832 | {"and then", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
10833 | {"or", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
10834 | {"xor", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
10835 | {"and", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
10836 | {"=", BINOP_EQUAL, PREC_EQUAL, 0}, | |
10837 | {"/=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
10838 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
10839 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
10840 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
10841 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
10842 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
10843 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
10844 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
10845 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
10846 | {"&", BINOP_CONCAT, PREC_ADD, 0}, | |
10847 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
10848 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
10849 | {"rem", BINOP_REM, PREC_MUL, 0}, | |
10850 | {"mod", BINOP_MOD, PREC_MUL, 0}, | |
10851 | {"**", BINOP_EXP, PREC_REPEAT, 0}, | |
10852 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
10853 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
10854 | {"+", UNOP_PLUS, PREC_PREFIX, 0}, | |
10855 | {"not ", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
10856 | {"not ", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
10857 | {"abs ", UNOP_ABS, PREC_PREFIX, 0}, | |
4c4b4cd2 PH |
10858 | {".all", UNOP_IND, PREC_SUFFIX, 1}, |
10859 | {"'access", UNOP_ADDR, PREC_SUFFIX, 1}, | |
10860 | {"'size", OP_ATR_SIZE, PREC_SUFFIX, 1}, | |
d2e4a39e | 10861 | {NULL, 0, 0, 0} |
14f9c5c9 AS |
10862 | }; |
10863 | \f | |
72d5681a PH |
10864 | enum ada_primitive_types { |
10865 | ada_primitive_type_int, | |
10866 | ada_primitive_type_long, | |
10867 | ada_primitive_type_short, | |
10868 | ada_primitive_type_char, | |
10869 | ada_primitive_type_float, | |
10870 | ada_primitive_type_double, | |
10871 | ada_primitive_type_void, | |
10872 | ada_primitive_type_long_long, | |
10873 | ada_primitive_type_long_double, | |
10874 | ada_primitive_type_natural, | |
10875 | ada_primitive_type_positive, | |
10876 | ada_primitive_type_system_address, | |
10877 | nr_ada_primitive_types | |
10878 | }; | |
6c038f32 PH |
10879 | |
10880 | static void | |
d4a9a881 | 10881 | ada_language_arch_info (struct gdbarch *gdbarch, |
72d5681a PH |
10882 | struct language_arch_info *lai) |
10883 | { | |
d4a9a881 | 10884 | const struct builtin_type *builtin = builtin_type (gdbarch); |
72d5681a | 10885 | lai->primitive_type_vector |
d4a9a881 | 10886 | = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_ada_primitive_types + 1, |
72d5681a PH |
10887 | struct type *); |
10888 | lai->primitive_type_vector [ada_primitive_type_int] = | |
9a76efb6 | 10889 | init_type (TYPE_CODE_INT, |
d4a9a881 | 10890 | gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT, |
9a76efb6 | 10891 | 0, "integer", (struct objfile *) NULL); |
72d5681a | 10892 | lai->primitive_type_vector [ada_primitive_type_long] = |
9a76efb6 | 10893 | init_type (TYPE_CODE_INT, |
d4a9a881 | 10894 | gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT, |
9a76efb6 | 10895 | 0, "long_integer", (struct objfile *) NULL); |
72d5681a | 10896 | lai->primitive_type_vector [ada_primitive_type_short] = |
9a76efb6 | 10897 | init_type (TYPE_CODE_INT, |
d4a9a881 | 10898 | gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT, |
9a76efb6 | 10899 | 0, "short_integer", (struct objfile *) NULL); |
61ee279c PH |
10900 | lai->string_char_type = |
10901 | lai->primitive_type_vector [ada_primitive_type_char] = | |
6c038f32 PH |
10902 | init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
10903 | 0, "character", (struct objfile *) NULL); | |
72d5681a | 10904 | lai->primitive_type_vector [ada_primitive_type_float] = |
ea06eb3d | 10905 | init_type (TYPE_CODE_FLT, |
d4a9a881 | 10906 | gdbarch_float_bit (gdbarch)/ TARGET_CHAR_BIT, |
6c038f32 | 10907 | 0, "float", (struct objfile *) NULL); |
72d5681a | 10908 | lai->primitive_type_vector [ada_primitive_type_double] = |
ea06eb3d | 10909 | init_type (TYPE_CODE_FLT, |
d4a9a881 | 10910 | gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT, |
6c038f32 | 10911 | 0, "long_float", (struct objfile *) NULL); |
72d5681a | 10912 | lai->primitive_type_vector [ada_primitive_type_long_long] = |
9a76efb6 | 10913 | init_type (TYPE_CODE_INT, |
d4a9a881 | 10914 | gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT, |
6c038f32 | 10915 | 0, "long_long_integer", (struct objfile *) NULL); |
72d5681a | 10916 | lai->primitive_type_vector [ada_primitive_type_long_double] = |
ea06eb3d | 10917 | init_type (TYPE_CODE_FLT, |
d4a9a881 | 10918 | gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT, |
6c038f32 | 10919 | 0, "long_long_float", (struct objfile *) NULL); |
72d5681a | 10920 | lai->primitive_type_vector [ada_primitive_type_natural] = |
9a76efb6 | 10921 | init_type (TYPE_CODE_INT, |
d4a9a881 | 10922 | gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT, |
9a76efb6 | 10923 | 0, "natural", (struct objfile *) NULL); |
72d5681a | 10924 | lai->primitive_type_vector [ada_primitive_type_positive] = |
9a76efb6 | 10925 | init_type (TYPE_CODE_INT, |
d4a9a881 | 10926 | gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT, |
9a76efb6 | 10927 | 0, "positive", (struct objfile *) NULL); |
72d5681a | 10928 | lai->primitive_type_vector [ada_primitive_type_void] = builtin->builtin_void; |
6c038f32 | 10929 | |
72d5681a | 10930 | lai->primitive_type_vector [ada_primitive_type_system_address] = |
6c038f32 PH |
10931 | lookup_pointer_type (init_type (TYPE_CODE_VOID, 1, 0, "void", |
10932 | (struct objfile *) NULL)); | |
72d5681a PH |
10933 | TYPE_NAME (lai->primitive_type_vector [ada_primitive_type_system_address]) |
10934 | = "system__address"; | |
6c038f32 | 10935 | } |
6c038f32 PH |
10936 | \f |
10937 | /* Language vector */ | |
10938 | ||
10939 | /* Not really used, but needed in the ada_language_defn. */ | |
10940 | ||
10941 | static void | |
10942 | emit_char (int c, struct ui_file *stream, int quoter) | |
10943 | { | |
10944 | ada_emit_char (c, stream, quoter, 1); | |
10945 | } | |
10946 | ||
10947 | static int | |
10948 | parse (void) | |
10949 | { | |
10950 | warnings_issued = 0; | |
10951 | return ada_parse (); | |
10952 | } | |
10953 | ||
10954 | static const struct exp_descriptor ada_exp_descriptor = { | |
10955 | ada_print_subexp, | |
10956 | ada_operator_length, | |
10957 | ada_op_name, | |
10958 | ada_dump_subexp_body, | |
10959 | ada_evaluate_subexp | |
10960 | }; | |
10961 | ||
10962 | const struct language_defn ada_language_defn = { | |
10963 | "ada", /* Language name */ | |
10964 | language_ada, | |
6c038f32 PH |
10965 | range_check_off, |
10966 | type_check_off, | |
10967 | case_sensitive_on, /* Yes, Ada is case-insensitive, but | |
10968 | that's not quite what this means. */ | |
6c038f32 PH |
10969 | array_row_major, |
10970 | &ada_exp_descriptor, | |
10971 | parse, | |
10972 | ada_error, | |
10973 | resolve, | |
10974 | ada_printchar, /* Print a character constant */ | |
10975 | ada_printstr, /* Function to print string constant */ | |
10976 | emit_char, /* Function to print single char (not used) */ | |
6c038f32 PH |
10977 | ada_print_type, /* Print a type using appropriate syntax */ |
10978 | ada_val_print, /* Print a value using appropriate syntax */ | |
10979 | ada_value_print, /* Print a top-level value */ | |
10980 | NULL, /* Language specific skip_trampoline */ | |
2b2d9e11 | 10981 | NULL, /* name_of_this */ |
6c038f32 PH |
10982 | ada_lookup_symbol_nonlocal, /* Looking up non-local symbols. */ |
10983 | basic_lookup_transparent_type, /* lookup_transparent_type */ | |
10984 | ada_la_decode, /* Language specific symbol demangler */ | |
10985 | NULL, /* Language specific class_name_from_physname */ | |
10986 | ada_op_print_tab, /* expression operators for printing */ | |
10987 | 0, /* c-style arrays */ | |
10988 | 1, /* String lower bound */ | |
6c038f32 | 10989 | ada_get_gdb_completer_word_break_characters, |
41d27058 | 10990 | ada_make_symbol_completion_list, |
72d5681a | 10991 | ada_language_arch_info, |
e79af960 | 10992 | ada_print_array_index, |
41f1b697 | 10993 | default_pass_by_reference, |
6c038f32 PH |
10994 | LANG_MAGIC |
10995 | }; | |
10996 | ||
d2e4a39e | 10997 | void |
6c038f32 | 10998 | _initialize_ada_language (void) |
14f9c5c9 | 10999 | { |
6c038f32 PH |
11000 | add_language (&ada_language_defn); |
11001 | ||
11002 | varsize_limit = 65536; | |
6c038f32 PH |
11003 | |
11004 | obstack_init (&symbol_list_obstack); | |
11005 | ||
11006 | decoded_names_store = htab_create_alloc | |
11007 | (256, htab_hash_string, (int (*)(const void *, const void *)) streq, | |
11008 | NULL, xcalloc, xfree); | |
6b69afc4 JB |
11009 | |
11010 | observer_attach_executable_changed (ada_executable_changed_observer); | |
14f9c5c9 | 11011 | } |