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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 AS |
5 | |
6 | This file is part of GDB. | |
7 | ||
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 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
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. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
20 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
14f9c5c9 | 22 | |
96d887e8 | 23 | |
4c4b4cd2 | 24 | #include "defs.h" |
14f9c5c9 | 25 | #include <stdio.h> |
0c30c098 | 26 | #include "gdb_string.h" |
14f9c5c9 AS |
27 | #include <ctype.h> |
28 | #include <stdarg.h> | |
29 | #include "demangle.h" | |
4c4b4cd2 PH |
30 | #include "gdb_regex.h" |
31 | #include "frame.h" | |
14f9c5c9 AS |
32 | #include "symtab.h" |
33 | #include "gdbtypes.h" | |
34 | #include "gdbcmd.h" | |
35 | #include "expression.h" | |
36 | #include "parser-defs.h" | |
37 | #include "language.h" | |
38 | #include "c-lang.h" | |
39 | #include "inferior.h" | |
40 | #include "symfile.h" | |
41 | #include "objfiles.h" | |
42 | #include "breakpoint.h" | |
43 | #include "gdbcore.h" | |
4c4b4cd2 PH |
44 | #include "hashtab.h" |
45 | #include "gdb_obstack.h" | |
14f9c5c9 | 46 | #include "ada-lang.h" |
4c4b4cd2 PH |
47 | #include "completer.h" |
48 | #include "gdb_stat.h" | |
49 | #ifdef UI_OUT | |
14f9c5c9 | 50 | #include "ui-out.h" |
4c4b4cd2 | 51 | #endif |
fe898f56 | 52 | #include "block.h" |
04714b91 | 53 | #include "infcall.h" |
de4f826b | 54 | #include "dictionary.h" |
60250e8b | 55 | #include "exceptions.h" |
f7f9143b JB |
56 | #include "annotate.h" |
57 | #include "valprint.h" | |
9bbc9174 | 58 | #include "source.h" |
0259addd | 59 | #include "observer.h" |
14f9c5c9 | 60 | |
4c4b4cd2 PH |
61 | #ifndef ADA_RETAIN_DOTS |
62 | #define ADA_RETAIN_DOTS 0 | |
63 | #endif | |
64 | ||
65 | /* Define whether or not the C operator '/' truncates towards zero for | |
66 | differently signed operands (truncation direction is undefined in C). | |
67 | Copied from valarith.c. */ | |
68 | ||
69 | #ifndef TRUNCATION_TOWARDS_ZERO | |
70 | #define TRUNCATION_TOWARDS_ZERO ((-5 / 2) == -2) | |
71 | #endif | |
72 | ||
4c4b4cd2 | 73 | |
4c4b4cd2 | 74 | static void extract_string (CORE_ADDR addr, char *buf); |
14f9c5c9 | 75 | |
d2e4a39e | 76 | static struct type *ada_create_fundamental_type (struct objfile *, int); |
14f9c5c9 AS |
77 | |
78 | static void modify_general_field (char *, LONGEST, int, int); | |
79 | ||
d2e4a39e | 80 | static struct type *desc_base_type (struct type *); |
14f9c5c9 | 81 | |
d2e4a39e | 82 | static struct type *desc_bounds_type (struct type *); |
14f9c5c9 | 83 | |
d2e4a39e | 84 | static struct value *desc_bounds (struct value *); |
14f9c5c9 | 85 | |
d2e4a39e | 86 | static int fat_pntr_bounds_bitpos (struct type *); |
14f9c5c9 | 87 | |
d2e4a39e | 88 | static int fat_pntr_bounds_bitsize (struct type *); |
14f9c5c9 | 89 | |
d2e4a39e | 90 | static struct type *desc_data_type (struct type *); |
14f9c5c9 | 91 | |
d2e4a39e | 92 | static struct value *desc_data (struct value *); |
14f9c5c9 | 93 | |
d2e4a39e | 94 | static int fat_pntr_data_bitpos (struct type *); |
14f9c5c9 | 95 | |
d2e4a39e | 96 | static int fat_pntr_data_bitsize (struct type *); |
14f9c5c9 | 97 | |
d2e4a39e | 98 | static struct value *desc_one_bound (struct value *, int, int); |
14f9c5c9 | 99 | |
d2e4a39e | 100 | static int desc_bound_bitpos (struct type *, int, int); |
14f9c5c9 | 101 | |
d2e4a39e | 102 | static int desc_bound_bitsize (struct type *, int, int); |
14f9c5c9 | 103 | |
d2e4a39e | 104 | static struct type *desc_index_type (struct type *, int); |
14f9c5c9 | 105 | |
d2e4a39e | 106 | static int desc_arity (struct type *); |
14f9c5c9 | 107 | |
d2e4a39e | 108 | static int ada_type_match (struct type *, struct type *, int); |
14f9c5c9 | 109 | |
d2e4a39e | 110 | static int ada_args_match (struct symbol *, struct value **, int); |
14f9c5c9 | 111 | |
4c4b4cd2 | 112 | static struct value *ensure_lval (struct value *, CORE_ADDR *); |
14f9c5c9 | 113 | |
d2e4a39e | 114 | static struct value *convert_actual (struct value *, struct type *, |
4c4b4cd2 | 115 | CORE_ADDR *); |
14f9c5c9 | 116 | |
d2e4a39e | 117 | static struct value *make_array_descriptor (struct type *, struct value *, |
4c4b4cd2 | 118 | CORE_ADDR *); |
14f9c5c9 | 119 | |
4c4b4cd2 | 120 | static void ada_add_block_symbols (struct obstack *, |
76a01679 | 121 | struct block *, const char *, |
4c4b4cd2 | 122 | domain_enum, struct objfile *, |
76a01679 | 123 | struct symtab *, int); |
14f9c5c9 | 124 | |
4c4b4cd2 | 125 | static int is_nonfunction (struct ada_symbol_info *, int); |
14f9c5c9 | 126 | |
76a01679 JB |
127 | static void add_defn_to_vec (struct obstack *, struct symbol *, |
128 | struct block *, struct symtab *); | |
14f9c5c9 | 129 | |
4c4b4cd2 PH |
130 | static int num_defns_collected (struct obstack *); |
131 | ||
132 | static struct ada_symbol_info *defns_collected (struct obstack *, int); | |
14f9c5c9 | 133 | |
d2e4a39e | 134 | static struct partial_symbol *ada_lookup_partial_symbol (struct partial_symtab |
76a01679 JB |
135 | *, const char *, int, |
136 | domain_enum, int); | |
14f9c5c9 | 137 | |
d2e4a39e | 138 | static struct symtab *symtab_for_sym (struct symbol *); |
14f9c5c9 | 139 | |
4c4b4cd2 | 140 | static struct value *resolve_subexp (struct expression **, int *, int, |
76a01679 | 141 | struct type *); |
14f9c5c9 | 142 | |
d2e4a39e | 143 | static void replace_operator_with_call (struct expression **, int, int, int, |
4c4b4cd2 | 144 | struct symbol *, struct block *); |
14f9c5c9 | 145 | |
d2e4a39e | 146 | static int possible_user_operator_p (enum exp_opcode, struct value **); |
14f9c5c9 | 147 | |
4c4b4cd2 PH |
148 | static char *ada_op_name (enum exp_opcode); |
149 | ||
150 | static const char *ada_decoded_op_name (enum exp_opcode); | |
14f9c5c9 | 151 | |
d2e4a39e | 152 | static int numeric_type_p (struct type *); |
14f9c5c9 | 153 | |
d2e4a39e | 154 | static int integer_type_p (struct type *); |
14f9c5c9 | 155 | |
d2e4a39e | 156 | static int scalar_type_p (struct type *); |
14f9c5c9 | 157 | |
d2e4a39e | 158 | static int discrete_type_p (struct type *); |
14f9c5c9 | 159 | |
4c4b4cd2 | 160 | static struct type *ada_lookup_struct_elt_type (struct type *, char *, |
76a01679 | 161 | int, int, int *); |
4c4b4cd2 | 162 | |
d2e4a39e | 163 | static struct value *evaluate_subexp (struct type *, struct expression *, |
4c4b4cd2 | 164 | int *, enum noside); |
14f9c5c9 | 165 | |
d2e4a39e | 166 | static struct value *evaluate_subexp_type (struct expression *, int *); |
14f9c5c9 | 167 | |
d2e4a39e | 168 | static int is_dynamic_field (struct type *, int); |
14f9c5c9 | 169 | |
10a2c479 | 170 | static struct type *to_fixed_variant_branch_type (struct type *, |
fc1a4b47 | 171 | const gdb_byte *, |
4c4b4cd2 PH |
172 | CORE_ADDR, struct value *); |
173 | ||
174 | static struct type *to_fixed_array_type (struct type *, struct value *, int); | |
14f9c5c9 | 175 | |
d2e4a39e | 176 | static struct type *to_fixed_range_type (char *, struct value *, |
4c4b4cd2 | 177 | struct objfile *); |
14f9c5c9 | 178 | |
d2e4a39e | 179 | static struct type *to_static_fixed_type (struct type *); |
14f9c5c9 | 180 | |
d2e4a39e | 181 | static struct value *unwrap_value (struct value *); |
14f9c5c9 | 182 | |
d2e4a39e | 183 | static struct type *packed_array_type (struct type *, long *); |
14f9c5c9 | 184 | |
d2e4a39e | 185 | static struct type *decode_packed_array_type (struct type *); |
14f9c5c9 | 186 | |
d2e4a39e | 187 | static struct value *decode_packed_array (struct value *); |
14f9c5c9 | 188 | |
d2e4a39e | 189 | static struct value *value_subscript_packed (struct value *, int, |
4c4b4cd2 | 190 | struct value **); |
14f9c5c9 | 191 | |
52ce6436 PH |
192 | static void move_bits (gdb_byte *, int, const gdb_byte *, int, int); |
193 | ||
4c4b4cd2 PH |
194 | static struct value *coerce_unspec_val_to_type (struct value *, |
195 | struct type *); | |
14f9c5c9 | 196 | |
d2e4a39e | 197 | static struct value *get_var_value (char *, char *); |
14f9c5c9 | 198 | |
d2e4a39e | 199 | static int lesseq_defined_than (struct symbol *, struct symbol *); |
14f9c5c9 | 200 | |
d2e4a39e | 201 | static int equiv_types (struct type *, struct type *); |
14f9c5c9 | 202 | |
d2e4a39e | 203 | static int is_name_suffix (const char *); |
14f9c5c9 | 204 | |
d2e4a39e | 205 | static int wild_match (const char *, int, const char *); |
14f9c5c9 | 206 | |
d2e4a39e | 207 | static struct value *ada_coerce_ref (struct value *); |
14f9c5c9 | 208 | |
4c4b4cd2 PH |
209 | static LONGEST pos_atr (struct value *); |
210 | ||
d2e4a39e | 211 | static struct value *value_pos_atr (struct value *); |
14f9c5c9 | 212 | |
d2e4a39e | 213 | static struct value *value_val_atr (struct type *, struct value *); |
14f9c5c9 | 214 | |
4c4b4cd2 PH |
215 | static struct symbol *standard_lookup (const char *, const struct block *, |
216 | domain_enum); | |
14f9c5c9 | 217 | |
4c4b4cd2 PH |
218 | static struct value *ada_search_struct_field (char *, struct value *, int, |
219 | struct type *); | |
220 | ||
221 | static struct value *ada_value_primitive_field (struct value *, int, int, | |
222 | struct type *); | |
223 | ||
76a01679 | 224 | static int find_struct_field (char *, struct type *, int, |
52ce6436 | 225 | struct type **, int *, int *, int *, int *); |
4c4b4cd2 PH |
226 | |
227 | static struct value *ada_to_fixed_value_create (struct type *, CORE_ADDR, | |
228 | struct value *); | |
229 | ||
230 | static struct value *ada_to_fixed_value (struct value *); | |
14f9c5c9 | 231 | |
4c4b4cd2 PH |
232 | static int ada_resolve_function (struct ada_symbol_info *, int, |
233 | struct value **, int, const char *, | |
234 | struct type *); | |
235 | ||
236 | static struct value *ada_coerce_to_simple_array (struct value *); | |
237 | ||
238 | static int ada_is_direct_array_type (struct type *); | |
239 | ||
72d5681a PH |
240 | static void ada_language_arch_info (struct gdbarch *, |
241 | struct language_arch_info *); | |
714e53ab PH |
242 | |
243 | static void check_size (const struct type *); | |
52ce6436 PH |
244 | |
245 | static struct value *ada_index_struct_field (int, struct value *, int, | |
246 | struct type *); | |
247 | ||
248 | static struct value *assign_aggregate (struct value *, struct value *, | |
249 | struct expression *, int *, enum noside); | |
250 | ||
251 | static void aggregate_assign_from_choices (struct value *, struct value *, | |
252 | struct expression *, | |
253 | int *, LONGEST *, int *, | |
254 | int, LONGEST, LONGEST); | |
255 | ||
256 | static void aggregate_assign_positional (struct value *, struct value *, | |
257 | struct expression *, | |
258 | int *, LONGEST *, int *, int, | |
259 | LONGEST, LONGEST); | |
260 | ||
261 | ||
262 | static void aggregate_assign_others (struct value *, struct value *, | |
263 | struct expression *, | |
264 | int *, LONGEST *, int, LONGEST, LONGEST); | |
265 | ||
266 | ||
267 | static void add_component_interval (LONGEST, LONGEST, LONGEST *, int *, int); | |
268 | ||
269 | ||
270 | static struct value *ada_evaluate_subexp (struct type *, struct expression *, | |
271 | int *, enum noside); | |
272 | ||
273 | static void ada_forward_operator_length (struct expression *, int, int *, | |
274 | int *); | |
4c4b4cd2 PH |
275 | \f |
276 | ||
76a01679 | 277 | |
4c4b4cd2 | 278 | /* Maximum-sized dynamic type. */ |
14f9c5c9 AS |
279 | static unsigned int varsize_limit; |
280 | ||
4c4b4cd2 PH |
281 | /* FIXME: brobecker/2003-09-17: No longer a const because it is |
282 | returned by a function that does not return a const char *. */ | |
283 | static char *ada_completer_word_break_characters = | |
284 | #ifdef VMS | |
285 | " \t\n!@#%^&*()+=|~`}{[]\";:?/,-"; | |
286 | #else | |
14f9c5c9 | 287 | " \t\n!@#$%^&*()+=|~`}{[]\";:?/,-"; |
4c4b4cd2 | 288 | #endif |
14f9c5c9 | 289 | |
4c4b4cd2 | 290 | /* The name of the symbol to use to get the name of the main subprogram. */ |
76a01679 | 291 | static const char ADA_MAIN_PROGRAM_SYMBOL_NAME[] |
4c4b4cd2 | 292 | = "__gnat_ada_main_program_name"; |
14f9c5c9 | 293 | |
4c4b4cd2 PH |
294 | /* Limit on the number of warnings to raise per expression evaluation. */ |
295 | static int warning_limit = 2; | |
296 | ||
297 | /* Number of warning messages issued; reset to 0 by cleanups after | |
298 | expression evaluation. */ | |
299 | static int warnings_issued = 0; | |
300 | ||
301 | static const char *known_runtime_file_name_patterns[] = { | |
302 | ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS NULL | |
303 | }; | |
304 | ||
305 | static const char *known_auxiliary_function_name_patterns[] = { | |
306 | ADA_KNOWN_AUXILIARY_FUNCTION_NAME_PATTERNS NULL | |
307 | }; | |
308 | ||
309 | /* Space for allocating results of ada_lookup_symbol_list. */ | |
310 | static struct obstack symbol_list_obstack; | |
311 | ||
312 | /* Utilities */ | |
313 | ||
96d887e8 | 314 | |
4c4b4cd2 PH |
315 | static char * |
316 | ada_get_gdb_completer_word_break_characters (void) | |
317 | { | |
318 | return ada_completer_word_break_characters; | |
319 | } | |
320 | ||
e79af960 JB |
321 | /* Print an array element index using the Ada syntax. */ |
322 | ||
323 | static void | |
324 | ada_print_array_index (struct value *index_value, struct ui_file *stream, | |
325 | int format, enum val_prettyprint pretty) | |
326 | { | |
327 | LA_VALUE_PRINT (index_value, stream, format, pretty); | |
328 | fprintf_filtered (stream, " => "); | |
329 | } | |
330 | ||
4c4b4cd2 PH |
331 | /* Read the string located at ADDR from the inferior and store the |
332 | result into BUF. */ | |
333 | ||
334 | static void | |
14f9c5c9 AS |
335 | extract_string (CORE_ADDR addr, char *buf) |
336 | { | |
d2e4a39e | 337 | int char_index = 0; |
14f9c5c9 | 338 | |
4c4b4cd2 PH |
339 | /* Loop, reading one byte at a time, until we reach the '\000' |
340 | end-of-string marker. */ | |
d2e4a39e AS |
341 | do |
342 | { | |
343 | target_read_memory (addr + char_index * sizeof (char), | |
4c4b4cd2 | 344 | buf + char_index * sizeof (char), sizeof (char)); |
d2e4a39e AS |
345 | char_index++; |
346 | } | |
347 | while (buf[char_index - 1] != '\000'); | |
14f9c5c9 AS |
348 | } |
349 | ||
f27cf670 | 350 | /* Assuming VECT points to an array of *SIZE objects of size |
14f9c5c9 | 351 | ELEMENT_SIZE, grow it to contain at least MIN_SIZE objects, |
f27cf670 | 352 | updating *SIZE as necessary and returning the (new) array. */ |
14f9c5c9 | 353 | |
f27cf670 AS |
354 | void * |
355 | grow_vect (void *vect, size_t *size, size_t min_size, int element_size) | |
14f9c5c9 | 356 | { |
d2e4a39e AS |
357 | if (*size < min_size) |
358 | { | |
359 | *size *= 2; | |
360 | if (*size < min_size) | |
4c4b4cd2 | 361 | *size = min_size; |
f27cf670 | 362 | vect = xrealloc (vect, *size * element_size); |
d2e4a39e | 363 | } |
f27cf670 | 364 | return vect; |
14f9c5c9 AS |
365 | } |
366 | ||
367 | /* True (non-zero) iff TARGET matches FIELD_NAME up to any trailing | |
4c4b4cd2 | 368 | suffix of FIELD_NAME beginning "___". */ |
14f9c5c9 AS |
369 | |
370 | static int | |
ebf56fd3 | 371 | field_name_match (const char *field_name, const char *target) |
14f9c5c9 AS |
372 | { |
373 | int len = strlen (target); | |
d2e4a39e | 374 | return |
4c4b4cd2 PH |
375 | (strncmp (field_name, target, len) == 0 |
376 | && (field_name[len] == '\0' | |
377 | || (strncmp (field_name + len, "___", 3) == 0 | |
76a01679 JB |
378 | && strcmp (field_name + strlen (field_name) - 6, |
379 | "___XVN") != 0))); | |
14f9c5c9 AS |
380 | } |
381 | ||
382 | ||
4c4b4cd2 PH |
383 | /* Assuming TYPE is a TYPE_CODE_STRUCT, find the field whose name matches |
384 | FIELD_NAME, and return its index. This function also handles fields | |
385 | whose name have ___ suffixes because the compiler sometimes alters | |
386 | their name by adding such a suffix to represent fields with certain | |
387 | constraints. If the field could not be found, return a negative | |
388 | number if MAYBE_MISSING is set. Otherwise raise an error. */ | |
389 | ||
390 | int | |
391 | ada_get_field_index (const struct type *type, const char *field_name, | |
392 | int maybe_missing) | |
393 | { | |
394 | int fieldno; | |
395 | for (fieldno = 0; fieldno < TYPE_NFIELDS (type); fieldno++) | |
396 | if (field_name_match (TYPE_FIELD_NAME (type, fieldno), field_name)) | |
397 | return fieldno; | |
398 | ||
399 | if (!maybe_missing) | |
323e0a4a | 400 | error (_("Unable to find field %s in struct %s. Aborting"), |
4c4b4cd2 PH |
401 | field_name, TYPE_NAME (type)); |
402 | ||
403 | return -1; | |
404 | } | |
405 | ||
406 | /* The length of the prefix of NAME prior to any "___" suffix. */ | |
14f9c5c9 AS |
407 | |
408 | int | |
d2e4a39e | 409 | ada_name_prefix_len (const char *name) |
14f9c5c9 AS |
410 | { |
411 | if (name == NULL) | |
412 | return 0; | |
d2e4a39e | 413 | else |
14f9c5c9 | 414 | { |
d2e4a39e | 415 | const char *p = strstr (name, "___"); |
14f9c5c9 | 416 | if (p == NULL) |
4c4b4cd2 | 417 | return strlen (name); |
14f9c5c9 | 418 | else |
4c4b4cd2 | 419 | return p - name; |
14f9c5c9 AS |
420 | } |
421 | } | |
422 | ||
4c4b4cd2 PH |
423 | /* Return non-zero if SUFFIX is a suffix of STR. |
424 | Return zero if STR is null. */ | |
425 | ||
14f9c5c9 | 426 | static int |
d2e4a39e | 427 | is_suffix (const char *str, const char *suffix) |
14f9c5c9 AS |
428 | { |
429 | int len1, len2; | |
430 | if (str == NULL) | |
431 | return 0; | |
432 | len1 = strlen (str); | |
433 | len2 = strlen (suffix); | |
4c4b4cd2 | 434 | return (len1 >= len2 && strcmp (str + len1 - len2, suffix) == 0); |
14f9c5c9 AS |
435 | } |
436 | ||
437 | /* Create a value of type TYPE whose contents come from VALADDR, if it | |
4c4b4cd2 PH |
438 | is non-null, and whose memory address (in the inferior) is |
439 | ADDRESS. */ | |
440 | ||
d2e4a39e | 441 | struct value * |
10a2c479 | 442 | value_from_contents_and_address (struct type *type, |
fc1a4b47 | 443 | const gdb_byte *valaddr, |
4c4b4cd2 | 444 | CORE_ADDR address) |
14f9c5c9 | 445 | { |
d2e4a39e AS |
446 | struct value *v = allocate_value (type); |
447 | if (valaddr == NULL) | |
dfa52d88 | 448 | set_value_lazy (v, 1); |
14f9c5c9 | 449 | else |
990a07ab | 450 | memcpy (value_contents_raw (v), valaddr, TYPE_LENGTH (type)); |
14f9c5c9 AS |
451 | VALUE_ADDRESS (v) = address; |
452 | if (address != 0) | |
453 | VALUE_LVAL (v) = lval_memory; | |
454 | return v; | |
455 | } | |
456 | ||
4c4b4cd2 PH |
457 | /* The contents of value VAL, treated as a value of type TYPE. The |
458 | result is an lval in memory if VAL is. */ | |
14f9c5c9 | 459 | |
d2e4a39e | 460 | static struct value * |
4c4b4cd2 | 461 | coerce_unspec_val_to_type (struct value *val, struct type *type) |
14f9c5c9 | 462 | { |
61ee279c | 463 | type = ada_check_typedef (type); |
df407dfe | 464 | if (value_type (val) == type) |
4c4b4cd2 | 465 | return val; |
d2e4a39e | 466 | else |
14f9c5c9 | 467 | { |
4c4b4cd2 PH |
468 | struct value *result; |
469 | ||
470 | /* Make sure that the object size is not unreasonable before | |
471 | trying to allocate some memory for it. */ | |
714e53ab | 472 | check_size (type); |
4c4b4cd2 PH |
473 | |
474 | result = allocate_value (type); | |
475 | VALUE_LVAL (result) = VALUE_LVAL (val); | |
9bbda503 AC |
476 | set_value_bitsize (result, value_bitsize (val)); |
477 | set_value_bitpos (result, value_bitpos (val)); | |
df407dfe | 478 | VALUE_ADDRESS (result) = VALUE_ADDRESS (val) + value_offset (val); |
d69fe07e | 479 | if (value_lazy (val) |
df407dfe | 480 | || TYPE_LENGTH (type) > TYPE_LENGTH (value_type (val))) |
dfa52d88 | 481 | set_value_lazy (result, 1); |
d2e4a39e | 482 | else |
0fd88904 | 483 | memcpy (value_contents_raw (result), value_contents (val), |
4c4b4cd2 | 484 | TYPE_LENGTH (type)); |
14f9c5c9 AS |
485 | return result; |
486 | } | |
487 | } | |
488 | ||
fc1a4b47 AC |
489 | static const gdb_byte * |
490 | cond_offset_host (const gdb_byte *valaddr, long offset) | |
14f9c5c9 AS |
491 | { |
492 | if (valaddr == NULL) | |
493 | return NULL; | |
494 | else | |
495 | return valaddr + offset; | |
496 | } | |
497 | ||
498 | static CORE_ADDR | |
ebf56fd3 | 499 | cond_offset_target (CORE_ADDR address, long offset) |
14f9c5c9 AS |
500 | { |
501 | if (address == 0) | |
502 | return 0; | |
d2e4a39e | 503 | else |
14f9c5c9 AS |
504 | return address + offset; |
505 | } | |
506 | ||
4c4b4cd2 PH |
507 | /* Issue a warning (as for the definition of warning in utils.c, but |
508 | with exactly one argument rather than ...), unless the limit on the | |
509 | number of warnings has passed during the evaluation of the current | |
510 | expression. */ | |
a2249542 | 511 | |
77109804 AC |
512 | /* FIXME: cagney/2004-10-10: This function is mimicking the behavior |
513 | provided by "complaint". */ | |
514 | static void lim_warning (const char *format, ...) ATTR_FORMAT (printf, 1, 2); | |
515 | ||
14f9c5c9 | 516 | static void |
a2249542 | 517 | lim_warning (const char *format, ...) |
14f9c5c9 | 518 | { |
a2249542 MK |
519 | va_list args; |
520 | va_start (args, format); | |
521 | ||
4c4b4cd2 PH |
522 | warnings_issued += 1; |
523 | if (warnings_issued <= warning_limit) | |
a2249542 MK |
524 | vwarning (format, args); |
525 | ||
526 | va_end (args); | |
4c4b4cd2 PH |
527 | } |
528 | ||
714e53ab PH |
529 | /* Issue an error if the size of an object of type T is unreasonable, |
530 | i.e. if it would be a bad idea to allocate a value of this type in | |
531 | GDB. */ | |
532 | ||
533 | static void | |
534 | check_size (const struct type *type) | |
535 | { | |
536 | if (TYPE_LENGTH (type) > varsize_limit) | |
323e0a4a | 537 | error (_("object size is larger than varsize-limit")); |
714e53ab PH |
538 | } |
539 | ||
540 | ||
c3e5cd34 PH |
541 | /* Note: would have used MAX_OF_TYPE and MIN_OF_TYPE macros from |
542 | gdbtypes.h, but some of the necessary definitions in that file | |
543 | seem to have gone missing. */ | |
544 | ||
545 | /* Maximum value of a SIZE-byte signed integer type. */ | |
4c4b4cd2 | 546 | static LONGEST |
c3e5cd34 | 547 | max_of_size (int size) |
4c4b4cd2 | 548 | { |
76a01679 JB |
549 | LONGEST top_bit = (LONGEST) 1 << (size * 8 - 2); |
550 | return top_bit | (top_bit - 1); | |
4c4b4cd2 PH |
551 | } |
552 | ||
c3e5cd34 | 553 | /* Minimum value of a SIZE-byte signed integer type. */ |
4c4b4cd2 | 554 | static LONGEST |
c3e5cd34 | 555 | min_of_size (int size) |
4c4b4cd2 | 556 | { |
c3e5cd34 | 557 | return -max_of_size (size) - 1; |
4c4b4cd2 PH |
558 | } |
559 | ||
c3e5cd34 | 560 | /* Maximum value of a SIZE-byte unsigned integer type. */ |
4c4b4cd2 | 561 | static ULONGEST |
c3e5cd34 | 562 | umax_of_size (int size) |
4c4b4cd2 | 563 | { |
76a01679 JB |
564 | ULONGEST top_bit = (ULONGEST) 1 << (size * 8 - 1); |
565 | return top_bit | (top_bit - 1); | |
4c4b4cd2 PH |
566 | } |
567 | ||
c3e5cd34 PH |
568 | /* Maximum value of integral type T, as a signed quantity. */ |
569 | static LONGEST | |
570 | max_of_type (struct type *t) | |
4c4b4cd2 | 571 | { |
c3e5cd34 PH |
572 | if (TYPE_UNSIGNED (t)) |
573 | return (LONGEST) umax_of_size (TYPE_LENGTH (t)); | |
574 | else | |
575 | return max_of_size (TYPE_LENGTH (t)); | |
576 | } | |
577 | ||
578 | /* Minimum value of integral type T, as a signed quantity. */ | |
579 | static LONGEST | |
580 | min_of_type (struct type *t) | |
581 | { | |
582 | if (TYPE_UNSIGNED (t)) | |
583 | return 0; | |
584 | else | |
585 | return min_of_size (TYPE_LENGTH (t)); | |
4c4b4cd2 PH |
586 | } |
587 | ||
588 | /* The largest value in the domain of TYPE, a discrete type, as an integer. */ | |
589 | static struct value * | |
590 | discrete_type_high_bound (struct type *type) | |
591 | { | |
76a01679 | 592 | switch (TYPE_CODE (type)) |
4c4b4cd2 PH |
593 | { |
594 | case TYPE_CODE_RANGE: | |
595 | return value_from_longest (TYPE_TARGET_TYPE (type), | |
76a01679 | 596 | TYPE_HIGH_BOUND (type)); |
4c4b4cd2 | 597 | case TYPE_CODE_ENUM: |
76a01679 JB |
598 | return |
599 | value_from_longest (type, | |
600 | TYPE_FIELD_BITPOS (type, | |
601 | TYPE_NFIELDS (type) - 1)); | |
602 | case TYPE_CODE_INT: | |
c3e5cd34 | 603 | return value_from_longest (type, max_of_type (type)); |
4c4b4cd2 | 604 | default: |
323e0a4a | 605 | error (_("Unexpected type in discrete_type_high_bound.")); |
4c4b4cd2 PH |
606 | } |
607 | } | |
608 | ||
609 | /* The largest value in the domain of TYPE, a discrete type, as an integer. */ | |
610 | static struct value * | |
611 | discrete_type_low_bound (struct type *type) | |
612 | { | |
76a01679 | 613 | switch (TYPE_CODE (type)) |
4c4b4cd2 PH |
614 | { |
615 | case TYPE_CODE_RANGE: | |
616 | return value_from_longest (TYPE_TARGET_TYPE (type), | |
76a01679 | 617 | TYPE_LOW_BOUND (type)); |
4c4b4cd2 | 618 | case TYPE_CODE_ENUM: |
76a01679 JB |
619 | return value_from_longest (type, TYPE_FIELD_BITPOS (type, 0)); |
620 | case TYPE_CODE_INT: | |
c3e5cd34 | 621 | return value_from_longest (type, min_of_type (type)); |
4c4b4cd2 | 622 | default: |
323e0a4a | 623 | error (_("Unexpected type in discrete_type_low_bound.")); |
4c4b4cd2 PH |
624 | } |
625 | } | |
626 | ||
627 | /* The identity on non-range types. For range types, the underlying | |
76a01679 | 628 | non-range scalar type. */ |
4c4b4cd2 PH |
629 | |
630 | static struct type * | |
631 | base_type (struct type *type) | |
632 | { | |
633 | while (type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE) | |
634 | { | |
76a01679 JB |
635 | if (type == TYPE_TARGET_TYPE (type) || TYPE_TARGET_TYPE (type) == NULL) |
636 | return type; | |
4c4b4cd2 PH |
637 | type = TYPE_TARGET_TYPE (type); |
638 | } | |
639 | return type; | |
14f9c5c9 | 640 | } |
4c4b4cd2 | 641 | \f |
76a01679 | 642 | |
4c4b4cd2 | 643 | /* Language Selection */ |
14f9c5c9 AS |
644 | |
645 | /* If the main program is in Ada, return language_ada, otherwise return LANG | |
646 | (the main program is in Ada iif the adainit symbol is found). | |
647 | ||
4c4b4cd2 | 648 | MAIN_PST is not used. */ |
d2e4a39e | 649 | |
14f9c5c9 | 650 | enum language |
d2e4a39e | 651 | ada_update_initial_language (enum language lang, |
4c4b4cd2 | 652 | struct partial_symtab *main_pst) |
14f9c5c9 | 653 | { |
d2e4a39e | 654 | if (lookup_minimal_symbol ("adainit", (const char *) NULL, |
4c4b4cd2 PH |
655 | (struct objfile *) NULL) != NULL) |
656 | return language_ada; | |
14f9c5c9 AS |
657 | |
658 | return lang; | |
659 | } | |
96d887e8 PH |
660 | |
661 | /* If the main procedure is written in Ada, then return its name. | |
662 | The result is good until the next call. Return NULL if the main | |
663 | procedure doesn't appear to be in Ada. */ | |
664 | ||
665 | char * | |
666 | ada_main_name (void) | |
667 | { | |
668 | struct minimal_symbol *msym; | |
669 | CORE_ADDR main_program_name_addr; | |
670 | static char main_program_name[1024]; | |
6c038f32 | 671 | |
96d887e8 PH |
672 | /* For Ada, the name of the main procedure is stored in a specific |
673 | string constant, generated by the binder. Look for that symbol, | |
674 | extract its address, and then read that string. If we didn't find | |
675 | that string, then most probably the main procedure is not written | |
676 | in Ada. */ | |
677 | msym = lookup_minimal_symbol (ADA_MAIN_PROGRAM_SYMBOL_NAME, NULL, NULL); | |
678 | ||
679 | if (msym != NULL) | |
680 | { | |
681 | main_program_name_addr = SYMBOL_VALUE_ADDRESS (msym); | |
682 | if (main_program_name_addr == 0) | |
323e0a4a | 683 | error (_("Invalid address for Ada main program name.")); |
96d887e8 PH |
684 | |
685 | extract_string (main_program_name_addr, main_program_name); | |
686 | return main_program_name; | |
687 | } | |
688 | ||
689 | /* The main procedure doesn't seem to be in Ada. */ | |
690 | return NULL; | |
691 | } | |
14f9c5c9 | 692 | \f |
4c4b4cd2 | 693 | /* Symbols */ |
d2e4a39e | 694 | |
4c4b4cd2 PH |
695 | /* Table of Ada operators and their GNAT-encoded names. Last entry is pair |
696 | of NULLs. */ | |
14f9c5c9 | 697 | |
d2e4a39e AS |
698 | const struct ada_opname_map ada_opname_table[] = { |
699 | {"Oadd", "\"+\"", BINOP_ADD}, | |
700 | {"Osubtract", "\"-\"", BINOP_SUB}, | |
701 | {"Omultiply", "\"*\"", BINOP_MUL}, | |
702 | {"Odivide", "\"/\"", BINOP_DIV}, | |
703 | {"Omod", "\"mod\"", BINOP_MOD}, | |
704 | {"Orem", "\"rem\"", BINOP_REM}, | |
705 | {"Oexpon", "\"**\"", BINOP_EXP}, | |
706 | {"Olt", "\"<\"", BINOP_LESS}, | |
707 | {"Ole", "\"<=\"", BINOP_LEQ}, | |
708 | {"Ogt", "\">\"", BINOP_GTR}, | |
709 | {"Oge", "\">=\"", BINOP_GEQ}, | |
710 | {"Oeq", "\"=\"", BINOP_EQUAL}, | |
711 | {"One", "\"/=\"", BINOP_NOTEQUAL}, | |
712 | {"Oand", "\"and\"", BINOP_BITWISE_AND}, | |
713 | {"Oor", "\"or\"", BINOP_BITWISE_IOR}, | |
714 | {"Oxor", "\"xor\"", BINOP_BITWISE_XOR}, | |
715 | {"Oconcat", "\"&\"", BINOP_CONCAT}, | |
716 | {"Oabs", "\"abs\"", UNOP_ABS}, | |
717 | {"Onot", "\"not\"", UNOP_LOGICAL_NOT}, | |
718 | {"Oadd", "\"+\"", UNOP_PLUS}, | |
719 | {"Osubtract", "\"-\"", UNOP_NEG}, | |
720 | {NULL, NULL} | |
14f9c5c9 AS |
721 | }; |
722 | ||
4c4b4cd2 PH |
723 | /* Return non-zero if STR should be suppressed in info listings. */ |
724 | ||
14f9c5c9 | 725 | static int |
d2e4a39e | 726 | is_suppressed_name (const char *str) |
14f9c5c9 | 727 | { |
4c4b4cd2 | 728 | if (strncmp (str, "_ada_", 5) == 0) |
14f9c5c9 AS |
729 | str += 5; |
730 | if (str[0] == '_' || str[0] == '\000') | |
731 | return 1; | |
732 | else | |
733 | { | |
d2e4a39e AS |
734 | const char *p; |
735 | const char *suffix = strstr (str, "___"); | |
14f9c5c9 | 736 | if (suffix != NULL && suffix[3] != 'X') |
4c4b4cd2 | 737 | return 1; |
14f9c5c9 | 738 | if (suffix == NULL) |
4c4b4cd2 | 739 | suffix = str + strlen (str); |
d2e4a39e | 740 | for (p = suffix - 1; p != str; p -= 1) |
4c4b4cd2 PH |
741 | if (isupper (*p)) |
742 | { | |
743 | int i; | |
744 | if (p[0] == 'X' && p[-1] != '_') | |
745 | goto OK; | |
746 | if (*p != 'O') | |
747 | return 1; | |
748 | for (i = 0; ada_opname_table[i].encoded != NULL; i += 1) | |
749 | if (strncmp (ada_opname_table[i].encoded, p, | |
750 | strlen (ada_opname_table[i].encoded)) == 0) | |
751 | goto OK; | |
752 | return 1; | |
753 | OK:; | |
754 | } | |
14f9c5c9 AS |
755 | return 0; |
756 | } | |
757 | } | |
758 | ||
4c4b4cd2 PH |
759 | /* The "encoded" form of DECODED, according to GNAT conventions. |
760 | The result is valid until the next call to ada_encode. */ | |
761 | ||
14f9c5c9 | 762 | char * |
4c4b4cd2 | 763 | ada_encode (const char *decoded) |
14f9c5c9 | 764 | { |
4c4b4cd2 PH |
765 | static char *encoding_buffer = NULL; |
766 | static size_t encoding_buffer_size = 0; | |
d2e4a39e | 767 | const char *p; |
14f9c5c9 | 768 | int k; |
d2e4a39e | 769 | |
4c4b4cd2 | 770 | if (decoded == NULL) |
14f9c5c9 AS |
771 | return NULL; |
772 | ||
4c4b4cd2 PH |
773 | GROW_VECT (encoding_buffer, encoding_buffer_size, |
774 | 2 * strlen (decoded) + 10); | |
14f9c5c9 AS |
775 | |
776 | k = 0; | |
4c4b4cd2 | 777 | for (p = decoded; *p != '\0'; p += 1) |
14f9c5c9 | 778 | { |
4c4b4cd2 PH |
779 | if (!ADA_RETAIN_DOTS && *p == '.') |
780 | { | |
781 | encoding_buffer[k] = encoding_buffer[k + 1] = '_'; | |
782 | k += 2; | |
783 | } | |
14f9c5c9 | 784 | else if (*p == '"') |
4c4b4cd2 PH |
785 | { |
786 | const struct ada_opname_map *mapping; | |
787 | ||
788 | for (mapping = ada_opname_table; | |
1265e4aa JB |
789 | mapping->encoded != NULL |
790 | && strncmp (mapping->decoded, p, | |
791 | strlen (mapping->decoded)) != 0; mapping += 1) | |
4c4b4cd2 PH |
792 | ; |
793 | if (mapping->encoded == NULL) | |
323e0a4a | 794 | error (_("invalid Ada operator name: %s"), p); |
4c4b4cd2 PH |
795 | strcpy (encoding_buffer + k, mapping->encoded); |
796 | k += strlen (mapping->encoded); | |
797 | break; | |
798 | } | |
d2e4a39e | 799 | else |
4c4b4cd2 PH |
800 | { |
801 | encoding_buffer[k] = *p; | |
802 | k += 1; | |
803 | } | |
14f9c5c9 AS |
804 | } |
805 | ||
4c4b4cd2 PH |
806 | encoding_buffer[k] = '\0'; |
807 | return encoding_buffer; | |
14f9c5c9 AS |
808 | } |
809 | ||
810 | /* Return NAME folded to lower case, or, if surrounded by single | |
4c4b4cd2 PH |
811 | quotes, unfolded, but with the quotes stripped away. Result good |
812 | to next call. */ | |
813 | ||
d2e4a39e AS |
814 | char * |
815 | ada_fold_name (const char *name) | |
14f9c5c9 | 816 | { |
d2e4a39e | 817 | static char *fold_buffer = NULL; |
14f9c5c9 AS |
818 | static size_t fold_buffer_size = 0; |
819 | ||
820 | int len = strlen (name); | |
d2e4a39e | 821 | GROW_VECT (fold_buffer, fold_buffer_size, len + 1); |
14f9c5c9 AS |
822 | |
823 | if (name[0] == '\'') | |
824 | { | |
d2e4a39e AS |
825 | strncpy (fold_buffer, name + 1, len - 2); |
826 | fold_buffer[len - 2] = '\000'; | |
14f9c5c9 AS |
827 | } |
828 | else | |
829 | { | |
830 | int i; | |
831 | for (i = 0; i <= len; i += 1) | |
4c4b4cd2 | 832 | fold_buffer[i] = tolower (name[i]); |
14f9c5c9 AS |
833 | } |
834 | ||
835 | return fold_buffer; | |
836 | } | |
837 | ||
529cad9c PH |
838 | /* Return nonzero if C is either a digit or a lowercase alphabet character. */ |
839 | ||
840 | static int | |
841 | is_lower_alphanum (const char c) | |
842 | { | |
843 | return (isdigit (c) || (isalpha (c) && islower (c))); | |
844 | } | |
845 | ||
846 | /* Decode: | |
847 | . Discard trailing .{DIGIT}+, ${DIGIT}+ or ___{DIGIT}+ | |
4c4b4cd2 PH |
848 | These are suffixes introduced by GNAT5 to nested subprogram |
849 | names, and do not serve any purpose for the debugger. | |
529cad9c PH |
850 | . Discard final __{DIGIT}+ or $({DIGIT}+(__{DIGIT}+)*) |
851 | . Discard final N if it follows a lowercase alphanumeric character | |
852 | (protected object subprogram suffix) | |
853 | . Convert other instances of embedded "__" to `.'. | |
854 | . Discard leading _ada_. | |
855 | . Convert operator names to the appropriate quoted symbols. | |
856 | . Remove everything after first ___ if it is followed by | |
14f9c5c9 | 857 | 'X'. |
529cad9c PH |
858 | . Replace TK__ with __, and a trailing B or TKB with nothing. |
859 | . Replace _[EB]{DIGIT}+[sb] with nothing (protected object entries) | |
860 | . Put symbols that should be suppressed in <...> brackets. | |
861 | . Remove trailing X[bn]* suffix (indicating names in package bodies). | |
14f9c5c9 | 862 | |
4c4b4cd2 PH |
863 | The resulting string is valid until the next call of ada_decode. |
864 | If the string is unchanged by demangling, the original string pointer | |
865 | is returned. */ | |
866 | ||
867 | const char * | |
868 | ada_decode (const char *encoded) | |
14f9c5c9 AS |
869 | { |
870 | int i, j; | |
871 | int len0; | |
d2e4a39e | 872 | const char *p; |
4c4b4cd2 | 873 | char *decoded; |
14f9c5c9 | 874 | int at_start_name; |
4c4b4cd2 PH |
875 | static char *decoding_buffer = NULL; |
876 | static size_t decoding_buffer_size = 0; | |
d2e4a39e | 877 | |
4c4b4cd2 PH |
878 | if (strncmp (encoded, "_ada_", 5) == 0) |
879 | encoded += 5; | |
14f9c5c9 | 880 | |
4c4b4cd2 | 881 | if (encoded[0] == '_' || encoded[0] == '<') |
14f9c5c9 AS |
882 | goto Suppress; |
883 | ||
529cad9c | 884 | /* Remove trailing .{DIGIT}+ or ___{DIGIT}+ or __{DIGIT}+. */ |
4c4b4cd2 PH |
885 | len0 = strlen (encoded); |
886 | if (len0 > 1 && isdigit (encoded[len0 - 1])) | |
887 | { | |
888 | i = len0 - 2; | |
889 | while (i > 0 && isdigit (encoded[i])) | |
890 | i--; | |
891 | if (i >= 0 && encoded[i] == '.') | |
892 | len0 = i; | |
529cad9c PH |
893 | else if (i >= 0 && encoded[i] == '$') |
894 | len0 = i; | |
4c4b4cd2 PH |
895 | else if (i >= 2 && strncmp (encoded + i - 2, "___", 3) == 0) |
896 | len0 = i - 2; | |
529cad9c PH |
897 | else if (i >= 1 && strncmp (encoded + i - 1, "__", 2) == 0) |
898 | len0 = i - 1; | |
4c4b4cd2 PH |
899 | } |
900 | ||
529cad9c PH |
901 | /* Remove trailing N. */ |
902 | ||
903 | /* Protected entry subprograms are broken into two | |
904 | separate subprograms: The first one is unprotected, and has | |
905 | a 'N' suffix; the second is the protected version, and has | |
906 | the 'P' suffix. The second calls the first one after handling | |
907 | the protection. Since the P subprograms are internally generated, | |
908 | we leave these names undecoded, giving the user a clue that this | |
909 | entity is internal. */ | |
910 | ||
911 | if (len0 > 1 | |
912 | && encoded[len0 - 1] == 'N' | |
913 | && (isdigit (encoded[len0 - 2]) || islower (encoded[len0 - 2]))) | |
914 | len0--; | |
915 | ||
4c4b4cd2 PH |
916 | /* Remove the ___X.* suffix if present. Do not forget to verify that |
917 | the suffix is located before the current "end" of ENCODED. We want | |
918 | to avoid re-matching parts of ENCODED that have previously been | |
919 | marked as discarded (by decrementing LEN0). */ | |
920 | p = strstr (encoded, "___"); | |
921 | if (p != NULL && p - encoded < len0 - 3) | |
14f9c5c9 AS |
922 | { |
923 | if (p[3] == 'X') | |
4c4b4cd2 | 924 | len0 = p - encoded; |
14f9c5c9 | 925 | else |
4c4b4cd2 | 926 | goto Suppress; |
14f9c5c9 | 927 | } |
4c4b4cd2 PH |
928 | |
929 | if (len0 > 3 && strncmp (encoded + len0 - 3, "TKB", 3) == 0) | |
14f9c5c9 | 930 | len0 -= 3; |
76a01679 | 931 | |
4c4b4cd2 | 932 | if (len0 > 1 && strncmp (encoded + len0 - 1, "B", 1) == 0) |
14f9c5c9 AS |
933 | len0 -= 1; |
934 | ||
4c4b4cd2 PH |
935 | /* Make decoded big enough for possible expansion by operator name. */ |
936 | GROW_VECT (decoding_buffer, decoding_buffer_size, 2 * len0 + 1); | |
937 | decoded = decoding_buffer; | |
14f9c5c9 | 938 | |
4c4b4cd2 | 939 | if (len0 > 1 && isdigit (encoded[len0 - 1])) |
d2e4a39e | 940 | { |
4c4b4cd2 PH |
941 | i = len0 - 2; |
942 | while ((i >= 0 && isdigit (encoded[i])) | |
943 | || (i >= 1 && encoded[i] == '_' && isdigit (encoded[i - 1]))) | |
944 | i -= 1; | |
945 | if (i > 1 && encoded[i] == '_' && encoded[i - 1] == '_') | |
946 | len0 = i - 1; | |
947 | else if (encoded[i] == '$') | |
948 | len0 = i; | |
d2e4a39e | 949 | } |
14f9c5c9 | 950 | |
4c4b4cd2 PH |
951 | for (i = 0, j = 0; i < len0 && !isalpha (encoded[i]); i += 1, j += 1) |
952 | decoded[j] = encoded[i]; | |
14f9c5c9 AS |
953 | |
954 | at_start_name = 1; | |
955 | while (i < len0) | |
956 | { | |
4c4b4cd2 PH |
957 | if (at_start_name && encoded[i] == 'O') |
958 | { | |
959 | int k; | |
960 | for (k = 0; ada_opname_table[k].encoded != NULL; k += 1) | |
961 | { | |
962 | int op_len = strlen (ada_opname_table[k].encoded); | |
06d5cf63 JB |
963 | if ((strncmp (ada_opname_table[k].encoded + 1, encoded + i + 1, |
964 | op_len - 1) == 0) | |
965 | && !isalnum (encoded[i + op_len])) | |
4c4b4cd2 PH |
966 | { |
967 | strcpy (decoded + j, ada_opname_table[k].decoded); | |
968 | at_start_name = 0; | |
969 | i += op_len; | |
970 | j += strlen (ada_opname_table[k].decoded); | |
971 | break; | |
972 | } | |
973 | } | |
974 | if (ada_opname_table[k].encoded != NULL) | |
975 | continue; | |
976 | } | |
14f9c5c9 AS |
977 | at_start_name = 0; |
978 | ||
529cad9c PH |
979 | /* Replace "TK__" with "__", which will eventually be translated |
980 | into "." (just below). */ | |
981 | ||
4c4b4cd2 PH |
982 | if (i < len0 - 4 && strncmp (encoded + i, "TK__", 4) == 0) |
983 | i += 2; | |
529cad9c PH |
984 | |
985 | /* Remove _E{DIGITS}+[sb] */ | |
986 | ||
987 | /* Just as for protected object subprograms, there are 2 categories | |
988 | of subprograms created by the compiler for each entry. The first | |
989 | one implements the actual entry code, and has a suffix following | |
990 | the convention above; the second one implements the barrier and | |
991 | uses the same convention as above, except that the 'E' is replaced | |
992 | by a 'B'. | |
993 | ||
994 | Just as above, we do not decode the name of barrier functions | |
995 | to give the user a clue that the code he is debugging has been | |
996 | internally generated. */ | |
997 | ||
998 | if (len0 - i > 3 && encoded [i] == '_' && encoded[i+1] == 'E' | |
999 | && isdigit (encoded[i+2])) | |
1000 | { | |
1001 | int k = i + 3; | |
1002 | ||
1003 | while (k < len0 && isdigit (encoded[k])) | |
1004 | k++; | |
1005 | ||
1006 | if (k < len0 | |
1007 | && (encoded[k] == 'b' || encoded[k] == 's')) | |
1008 | { | |
1009 | k++; | |
1010 | /* Just as an extra precaution, make sure that if this | |
1011 | suffix is followed by anything else, it is a '_'. | |
1012 | Otherwise, we matched this sequence by accident. */ | |
1013 | if (k == len0 | |
1014 | || (k < len0 && encoded[k] == '_')) | |
1015 | i = k; | |
1016 | } | |
1017 | } | |
1018 | ||
1019 | /* Remove trailing "N" in [a-z0-9]+N__. The N is added by | |
1020 | the GNAT front-end in protected object subprograms. */ | |
1021 | ||
1022 | if (i < len0 + 3 | |
1023 | && encoded[i] == 'N' && encoded[i+1] == '_' && encoded[i+2] == '_') | |
1024 | { | |
1025 | /* Backtrack a bit up until we reach either the begining of | |
1026 | the encoded name, or "__". Make sure that we only find | |
1027 | digits or lowercase characters. */ | |
1028 | const char *ptr = encoded + i - 1; | |
1029 | ||
1030 | while (ptr >= encoded && is_lower_alphanum (ptr[0])) | |
1031 | ptr--; | |
1032 | if (ptr < encoded | |
1033 | || (ptr > encoded && ptr[0] == '_' && ptr[-1] == '_')) | |
1034 | i++; | |
1035 | } | |
1036 | ||
4c4b4cd2 PH |
1037 | if (encoded[i] == 'X' && i != 0 && isalnum (encoded[i - 1])) |
1038 | { | |
1039 | do | |
1040 | i += 1; | |
1041 | while (i < len0 && (encoded[i] == 'b' || encoded[i] == 'n')); | |
1042 | if (i < len0) | |
1043 | goto Suppress; | |
1044 | } | |
1045 | else if (!ADA_RETAIN_DOTS | |
1046 | && i < len0 - 2 && encoded[i] == '_' && encoded[i + 1] == '_') | |
1047 | { | |
1048 | decoded[j] = '.'; | |
1049 | at_start_name = 1; | |
1050 | i += 2; | |
1051 | j += 1; | |
1052 | } | |
14f9c5c9 | 1053 | else |
4c4b4cd2 PH |
1054 | { |
1055 | decoded[j] = encoded[i]; | |
1056 | i += 1; | |
1057 | j += 1; | |
1058 | } | |
14f9c5c9 | 1059 | } |
4c4b4cd2 | 1060 | decoded[j] = '\000'; |
14f9c5c9 | 1061 | |
4c4b4cd2 PH |
1062 | for (i = 0; decoded[i] != '\0'; i += 1) |
1063 | if (isupper (decoded[i]) || decoded[i] == ' ') | |
14f9c5c9 AS |
1064 | goto Suppress; |
1065 | ||
4c4b4cd2 PH |
1066 | if (strcmp (decoded, encoded) == 0) |
1067 | return encoded; | |
1068 | else | |
1069 | return decoded; | |
14f9c5c9 AS |
1070 | |
1071 | Suppress: | |
4c4b4cd2 PH |
1072 | GROW_VECT (decoding_buffer, decoding_buffer_size, strlen (encoded) + 3); |
1073 | decoded = decoding_buffer; | |
1074 | if (encoded[0] == '<') | |
1075 | strcpy (decoded, encoded); | |
14f9c5c9 | 1076 | else |
4c4b4cd2 PH |
1077 | sprintf (decoded, "<%s>", encoded); |
1078 | return decoded; | |
1079 | ||
1080 | } | |
1081 | ||
1082 | /* Table for keeping permanent unique copies of decoded names. Once | |
1083 | allocated, names in this table are never released. While this is a | |
1084 | storage leak, it should not be significant unless there are massive | |
1085 | changes in the set of decoded names in successive versions of a | |
1086 | symbol table loaded during a single session. */ | |
1087 | static struct htab *decoded_names_store; | |
1088 | ||
1089 | /* Returns the decoded name of GSYMBOL, as for ada_decode, caching it | |
1090 | in the language-specific part of GSYMBOL, if it has not been | |
1091 | previously computed. Tries to save the decoded name in the same | |
1092 | obstack as GSYMBOL, if possible, and otherwise on the heap (so that, | |
1093 | in any case, the decoded symbol has a lifetime at least that of | |
1094 | GSYMBOL). | |
1095 | The GSYMBOL parameter is "mutable" in the C++ sense: logically | |
1096 | const, but nevertheless modified to a semantically equivalent form | |
1097 | when a decoded name is cached in it. | |
76a01679 | 1098 | */ |
4c4b4cd2 | 1099 | |
76a01679 JB |
1100 | char * |
1101 | ada_decode_symbol (const struct general_symbol_info *gsymbol) | |
4c4b4cd2 | 1102 | { |
76a01679 | 1103 | char **resultp = |
4c4b4cd2 PH |
1104 | (char **) &gsymbol->language_specific.cplus_specific.demangled_name; |
1105 | if (*resultp == NULL) | |
1106 | { | |
1107 | const char *decoded = ada_decode (gsymbol->name); | |
1108 | if (gsymbol->bfd_section != NULL) | |
76a01679 JB |
1109 | { |
1110 | bfd *obfd = gsymbol->bfd_section->owner; | |
1111 | if (obfd != NULL) | |
1112 | { | |
1113 | struct objfile *objf; | |
1114 | ALL_OBJFILES (objf) | |
1115 | { | |
1116 | if (obfd == objf->obfd) | |
1117 | { | |
1118 | *resultp = obsavestring (decoded, strlen (decoded), | |
1119 | &objf->objfile_obstack); | |
1120 | break; | |
1121 | } | |
1122 | } | |
1123 | } | |
1124 | } | |
4c4b4cd2 | 1125 | /* Sometimes, we can't find a corresponding objfile, in which |
76a01679 JB |
1126 | case, we put the result on the heap. Since we only decode |
1127 | when needed, we hope this usually does not cause a | |
1128 | significant memory leak (FIXME). */ | |
4c4b4cd2 | 1129 | if (*resultp == NULL) |
76a01679 JB |
1130 | { |
1131 | char **slot = (char **) htab_find_slot (decoded_names_store, | |
1132 | decoded, INSERT); | |
1133 | if (*slot == NULL) | |
1134 | *slot = xstrdup (decoded); | |
1135 | *resultp = *slot; | |
1136 | } | |
4c4b4cd2 | 1137 | } |
14f9c5c9 | 1138 | |
4c4b4cd2 PH |
1139 | return *resultp; |
1140 | } | |
76a01679 JB |
1141 | |
1142 | char * | |
1143 | ada_la_decode (const char *encoded, int options) | |
4c4b4cd2 PH |
1144 | { |
1145 | return xstrdup (ada_decode (encoded)); | |
14f9c5c9 AS |
1146 | } |
1147 | ||
1148 | /* Returns non-zero iff SYM_NAME matches NAME, ignoring any trailing | |
4c4b4cd2 PH |
1149 | suffixes that encode debugging information or leading _ada_ on |
1150 | SYM_NAME (see is_name_suffix commentary for the debugging | |
1151 | information that is ignored). If WILD, then NAME need only match a | |
1152 | suffix of SYM_NAME minus the same suffixes. Also returns 0 if | |
1153 | either argument is NULL. */ | |
14f9c5c9 AS |
1154 | |
1155 | int | |
d2e4a39e | 1156 | ada_match_name (const char *sym_name, const char *name, int wild) |
14f9c5c9 AS |
1157 | { |
1158 | if (sym_name == NULL || name == NULL) | |
1159 | return 0; | |
1160 | else if (wild) | |
1161 | return wild_match (name, strlen (name), sym_name); | |
d2e4a39e AS |
1162 | else |
1163 | { | |
1164 | int len_name = strlen (name); | |
4c4b4cd2 PH |
1165 | return (strncmp (sym_name, name, len_name) == 0 |
1166 | && is_name_suffix (sym_name + len_name)) | |
1167 | || (strncmp (sym_name, "_ada_", 5) == 0 | |
1168 | && strncmp (sym_name + 5, name, len_name) == 0 | |
1169 | && is_name_suffix (sym_name + len_name + 5)); | |
d2e4a39e | 1170 | } |
14f9c5c9 AS |
1171 | } |
1172 | ||
4c4b4cd2 PH |
1173 | /* True (non-zero) iff, in Ada mode, the symbol SYM should be |
1174 | suppressed in info listings. */ | |
14f9c5c9 AS |
1175 | |
1176 | int | |
ebf56fd3 | 1177 | ada_suppress_symbol_printing (struct symbol *sym) |
14f9c5c9 | 1178 | { |
176620f1 | 1179 | if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN) |
14f9c5c9 | 1180 | return 1; |
d2e4a39e | 1181 | else |
4c4b4cd2 | 1182 | return is_suppressed_name (SYMBOL_LINKAGE_NAME (sym)); |
14f9c5c9 | 1183 | } |
14f9c5c9 | 1184 | \f |
d2e4a39e | 1185 | |
4c4b4cd2 | 1186 | /* Arrays */ |
14f9c5c9 | 1187 | |
4c4b4cd2 | 1188 | /* Names of MAX_ADA_DIMENS bounds in P_BOUNDS fields of array descriptors. */ |
14f9c5c9 | 1189 | |
d2e4a39e AS |
1190 | static char *bound_name[] = { |
1191 | "LB0", "UB0", "LB1", "UB1", "LB2", "UB2", "LB3", "UB3", | |
14f9c5c9 AS |
1192 | "LB4", "UB4", "LB5", "UB5", "LB6", "UB6", "LB7", "UB7" |
1193 | }; | |
1194 | ||
1195 | /* Maximum number of array dimensions we are prepared to handle. */ | |
1196 | ||
4c4b4cd2 | 1197 | #define MAX_ADA_DIMENS (sizeof(bound_name) / (2*sizeof(char *))) |
14f9c5c9 | 1198 | |
4c4b4cd2 | 1199 | /* Like modify_field, but allows bitpos > wordlength. */ |
14f9c5c9 AS |
1200 | |
1201 | static void | |
ebf56fd3 | 1202 | modify_general_field (char *addr, LONGEST fieldval, int bitpos, int bitsize) |
14f9c5c9 | 1203 | { |
4c4b4cd2 | 1204 | modify_field (addr + bitpos / 8, fieldval, bitpos % 8, bitsize); |
14f9c5c9 AS |
1205 | } |
1206 | ||
1207 | ||
4c4b4cd2 PH |
1208 | /* The desc_* routines return primitive portions of array descriptors |
1209 | (fat pointers). */ | |
14f9c5c9 AS |
1210 | |
1211 | /* The descriptor or array type, if any, indicated by TYPE; removes | |
4c4b4cd2 PH |
1212 | level of indirection, if needed. */ |
1213 | ||
d2e4a39e AS |
1214 | static struct type * |
1215 | desc_base_type (struct type *type) | |
14f9c5c9 AS |
1216 | { |
1217 | if (type == NULL) | |
1218 | return NULL; | |
61ee279c | 1219 | type = ada_check_typedef (type); |
1265e4aa JB |
1220 | if (type != NULL |
1221 | && (TYPE_CODE (type) == TYPE_CODE_PTR | |
1222 | || TYPE_CODE (type) == TYPE_CODE_REF)) | |
61ee279c | 1223 | return ada_check_typedef (TYPE_TARGET_TYPE (type)); |
14f9c5c9 AS |
1224 | else |
1225 | return type; | |
1226 | } | |
1227 | ||
4c4b4cd2 PH |
1228 | /* True iff TYPE indicates a "thin" array pointer type. */ |
1229 | ||
14f9c5c9 | 1230 | static int |
d2e4a39e | 1231 | is_thin_pntr (struct type *type) |
14f9c5c9 | 1232 | { |
d2e4a39e | 1233 | return |
14f9c5c9 AS |
1234 | is_suffix (ada_type_name (desc_base_type (type)), "___XUT") |
1235 | || is_suffix (ada_type_name (desc_base_type (type)), "___XUT___XVE"); | |
1236 | } | |
1237 | ||
4c4b4cd2 PH |
1238 | /* The descriptor type for thin pointer type TYPE. */ |
1239 | ||
d2e4a39e AS |
1240 | static struct type * |
1241 | thin_descriptor_type (struct type *type) | |
14f9c5c9 | 1242 | { |
d2e4a39e | 1243 | struct type *base_type = desc_base_type (type); |
14f9c5c9 AS |
1244 | if (base_type == NULL) |
1245 | return NULL; | |
1246 | if (is_suffix (ada_type_name (base_type), "___XVE")) | |
1247 | return base_type; | |
d2e4a39e | 1248 | else |
14f9c5c9 | 1249 | { |
d2e4a39e | 1250 | struct type *alt_type = ada_find_parallel_type (base_type, "___XVE"); |
14f9c5c9 | 1251 | if (alt_type == NULL) |
4c4b4cd2 | 1252 | return base_type; |
14f9c5c9 | 1253 | else |
4c4b4cd2 | 1254 | return alt_type; |
14f9c5c9 AS |
1255 | } |
1256 | } | |
1257 | ||
4c4b4cd2 PH |
1258 | /* A pointer to the array data for thin-pointer value VAL. */ |
1259 | ||
d2e4a39e AS |
1260 | static struct value * |
1261 | thin_data_pntr (struct value *val) | |
14f9c5c9 | 1262 | { |
df407dfe | 1263 | struct type *type = value_type (val); |
14f9c5c9 | 1264 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
d2e4a39e | 1265 | return value_cast (desc_data_type (thin_descriptor_type (type)), |
4c4b4cd2 | 1266 | value_copy (val)); |
d2e4a39e | 1267 | else |
14f9c5c9 | 1268 | return value_from_longest (desc_data_type (thin_descriptor_type (type)), |
df407dfe | 1269 | VALUE_ADDRESS (val) + value_offset (val)); |
14f9c5c9 AS |
1270 | } |
1271 | ||
4c4b4cd2 PH |
1272 | /* True iff TYPE indicates a "thick" array pointer type. */ |
1273 | ||
14f9c5c9 | 1274 | static int |
d2e4a39e | 1275 | is_thick_pntr (struct type *type) |
14f9c5c9 AS |
1276 | { |
1277 | type = desc_base_type (type); | |
1278 | return (type != NULL && TYPE_CODE (type) == TYPE_CODE_STRUCT | |
4c4b4cd2 | 1279 | && lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL); |
14f9c5c9 AS |
1280 | } |
1281 | ||
4c4b4cd2 PH |
1282 | /* If TYPE is the type of an array descriptor (fat or thin pointer) or a |
1283 | pointer to one, the type of its bounds data; otherwise, NULL. */ | |
76a01679 | 1284 | |
d2e4a39e AS |
1285 | static struct type * |
1286 | desc_bounds_type (struct type *type) | |
14f9c5c9 | 1287 | { |
d2e4a39e | 1288 | struct type *r; |
14f9c5c9 AS |
1289 | |
1290 | type = desc_base_type (type); | |
1291 | ||
1292 | if (type == NULL) | |
1293 | return NULL; | |
1294 | else if (is_thin_pntr (type)) | |
1295 | { | |
1296 | type = thin_descriptor_type (type); | |
1297 | if (type == NULL) | |
4c4b4cd2 | 1298 | return NULL; |
14f9c5c9 AS |
1299 | r = lookup_struct_elt_type (type, "BOUNDS", 1); |
1300 | if (r != NULL) | |
61ee279c | 1301 | return ada_check_typedef (r); |
14f9c5c9 AS |
1302 | } |
1303 | else if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
1304 | { | |
1305 | r = lookup_struct_elt_type (type, "P_BOUNDS", 1); | |
1306 | if (r != NULL) | |
61ee279c | 1307 | return ada_check_typedef (TYPE_TARGET_TYPE (ada_check_typedef (r))); |
14f9c5c9 AS |
1308 | } |
1309 | return NULL; | |
1310 | } | |
1311 | ||
1312 | /* If ARR is an array descriptor (fat or thin pointer), or pointer to | |
4c4b4cd2 PH |
1313 | one, a pointer to its bounds data. Otherwise NULL. */ |
1314 | ||
d2e4a39e AS |
1315 | static struct value * |
1316 | desc_bounds (struct value *arr) | |
14f9c5c9 | 1317 | { |
df407dfe | 1318 | struct type *type = ada_check_typedef (value_type (arr)); |
d2e4a39e | 1319 | if (is_thin_pntr (type)) |
14f9c5c9 | 1320 | { |
d2e4a39e | 1321 | struct type *bounds_type = |
4c4b4cd2 | 1322 | desc_bounds_type (thin_descriptor_type (type)); |
14f9c5c9 AS |
1323 | LONGEST addr; |
1324 | ||
4cdfadb1 | 1325 | if (bounds_type == NULL) |
323e0a4a | 1326 | error (_("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1327 | |
1328 | /* NOTE: The following calculation is not really kosher, but | |
d2e4a39e | 1329 | since desc_type is an XVE-encoded type (and shouldn't be), |
4c4b4cd2 | 1330 | the correct calculation is a real pain. FIXME (and fix GCC). */ |
14f9c5c9 | 1331 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
4c4b4cd2 | 1332 | addr = value_as_long (arr); |
d2e4a39e | 1333 | else |
df407dfe | 1334 | addr = VALUE_ADDRESS (arr) + value_offset (arr); |
14f9c5c9 | 1335 | |
d2e4a39e | 1336 | return |
4c4b4cd2 PH |
1337 | value_from_longest (lookup_pointer_type (bounds_type), |
1338 | addr - TYPE_LENGTH (bounds_type)); | |
14f9c5c9 AS |
1339 | } |
1340 | ||
1341 | else if (is_thick_pntr (type)) | |
d2e4a39e | 1342 | return value_struct_elt (&arr, NULL, "P_BOUNDS", NULL, |
323e0a4a | 1343 | _("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1344 | else |
1345 | return NULL; | |
1346 | } | |
1347 | ||
4c4b4cd2 PH |
1348 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit |
1349 | position of the field containing the address of the bounds data. */ | |
1350 | ||
14f9c5c9 | 1351 | static int |
d2e4a39e | 1352 | fat_pntr_bounds_bitpos (struct type *type) |
14f9c5c9 AS |
1353 | { |
1354 | return TYPE_FIELD_BITPOS (desc_base_type (type), 1); | |
1355 | } | |
1356 | ||
1357 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1358 | size of the field containing the address of the bounds data. */ |
1359 | ||
14f9c5c9 | 1360 | static int |
d2e4a39e | 1361 | fat_pntr_bounds_bitsize (struct type *type) |
14f9c5c9 AS |
1362 | { |
1363 | type = desc_base_type (type); | |
1364 | ||
d2e4a39e | 1365 | if (TYPE_FIELD_BITSIZE (type, 1) > 0) |
14f9c5c9 AS |
1366 | return TYPE_FIELD_BITSIZE (type, 1); |
1367 | else | |
61ee279c | 1368 | return 8 * TYPE_LENGTH (ada_check_typedef (TYPE_FIELD_TYPE (type, 1))); |
14f9c5c9 AS |
1369 | } |
1370 | ||
4c4b4cd2 | 1371 | /* If TYPE is the type of an array descriptor (fat or thin pointer) or a |
14f9c5c9 | 1372 | pointer to one, the type of its array data (a |
4c4b4cd2 PH |
1373 | pointer-to-array-with-no-bounds type); otherwise, NULL. Use |
1374 | ada_type_of_array to get an array type with bounds data. */ | |
1375 | ||
d2e4a39e AS |
1376 | static struct type * |
1377 | desc_data_type (struct type *type) | |
14f9c5c9 AS |
1378 | { |
1379 | type = desc_base_type (type); | |
1380 | ||
4c4b4cd2 | 1381 | /* NOTE: The following is bogus; see comment in desc_bounds. */ |
14f9c5c9 | 1382 | if (is_thin_pntr (type)) |
d2e4a39e AS |
1383 | return lookup_pointer_type |
1384 | (desc_base_type (TYPE_FIELD_TYPE (thin_descriptor_type (type), 1))); | |
14f9c5c9 AS |
1385 | else if (is_thick_pntr (type)) |
1386 | return lookup_struct_elt_type (type, "P_ARRAY", 1); | |
1387 | else | |
1388 | return NULL; | |
1389 | } | |
1390 | ||
1391 | /* If ARR is an array descriptor (fat or thin pointer), a pointer to | |
1392 | its array data. */ | |
4c4b4cd2 | 1393 | |
d2e4a39e AS |
1394 | static struct value * |
1395 | desc_data (struct value *arr) | |
14f9c5c9 | 1396 | { |
df407dfe | 1397 | struct type *type = value_type (arr); |
14f9c5c9 AS |
1398 | if (is_thin_pntr (type)) |
1399 | return thin_data_pntr (arr); | |
1400 | else if (is_thick_pntr (type)) | |
d2e4a39e | 1401 | return value_struct_elt (&arr, NULL, "P_ARRAY", NULL, |
323e0a4a | 1402 | _("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1403 | else |
1404 | return NULL; | |
1405 | } | |
1406 | ||
1407 | ||
1408 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1409 | position of the field containing the address of the data. */ |
1410 | ||
14f9c5c9 | 1411 | static int |
d2e4a39e | 1412 | fat_pntr_data_bitpos (struct type *type) |
14f9c5c9 AS |
1413 | { |
1414 | return TYPE_FIELD_BITPOS (desc_base_type (type), 0); | |
1415 | } | |
1416 | ||
1417 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1418 | size of the field containing the address of the data. */ |
1419 | ||
14f9c5c9 | 1420 | static int |
d2e4a39e | 1421 | fat_pntr_data_bitsize (struct type *type) |
14f9c5c9 AS |
1422 | { |
1423 | type = desc_base_type (type); | |
1424 | ||
1425 | if (TYPE_FIELD_BITSIZE (type, 0) > 0) | |
1426 | return TYPE_FIELD_BITSIZE (type, 0); | |
d2e4a39e | 1427 | else |
14f9c5c9 AS |
1428 | return TARGET_CHAR_BIT * TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)); |
1429 | } | |
1430 | ||
4c4b4cd2 | 1431 | /* If BOUNDS is an array-bounds structure (or pointer to one), return |
14f9c5c9 | 1432 | the Ith lower bound stored in it, if WHICH is 0, and the Ith upper |
4c4b4cd2 PH |
1433 | bound, if WHICH is 1. The first bound is I=1. */ |
1434 | ||
d2e4a39e AS |
1435 | static struct value * |
1436 | desc_one_bound (struct value *bounds, int i, int which) | |
14f9c5c9 | 1437 | { |
d2e4a39e | 1438 | return value_struct_elt (&bounds, NULL, bound_name[2 * i + which - 2], NULL, |
323e0a4a | 1439 | _("Bad GNAT array descriptor bounds")); |
14f9c5c9 AS |
1440 | } |
1441 | ||
1442 | /* If BOUNDS is an array-bounds structure type, return the bit position | |
1443 | of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper | |
4c4b4cd2 PH |
1444 | bound, if WHICH is 1. The first bound is I=1. */ |
1445 | ||
14f9c5c9 | 1446 | static int |
d2e4a39e | 1447 | desc_bound_bitpos (struct type *type, int i, int which) |
14f9c5c9 | 1448 | { |
d2e4a39e | 1449 | return TYPE_FIELD_BITPOS (desc_base_type (type), 2 * i + which - 2); |
14f9c5c9 AS |
1450 | } |
1451 | ||
1452 | /* If BOUNDS is an array-bounds structure type, return the bit field size | |
1453 | of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper | |
4c4b4cd2 PH |
1454 | bound, if WHICH is 1. The first bound is I=1. */ |
1455 | ||
76a01679 | 1456 | static int |
d2e4a39e | 1457 | desc_bound_bitsize (struct type *type, int i, int which) |
14f9c5c9 AS |
1458 | { |
1459 | type = desc_base_type (type); | |
1460 | ||
d2e4a39e AS |
1461 | if (TYPE_FIELD_BITSIZE (type, 2 * i + which - 2) > 0) |
1462 | return TYPE_FIELD_BITSIZE (type, 2 * i + which - 2); | |
1463 | else | |
1464 | return 8 * TYPE_LENGTH (TYPE_FIELD_TYPE (type, 2 * i + which - 2)); | |
14f9c5c9 AS |
1465 | } |
1466 | ||
1467 | /* If TYPE is the type of an array-bounds structure, the type of its | |
4c4b4cd2 PH |
1468 | Ith bound (numbering from 1). Otherwise, NULL. */ |
1469 | ||
d2e4a39e AS |
1470 | static struct type * |
1471 | desc_index_type (struct type *type, int i) | |
14f9c5c9 AS |
1472 | { |
1473 | type = desc_base_type (type); | |
1474 | ||
1475 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
d2e4a39e AS |
1476 | return lookup_struct_elt_type (type, bound_name[2 * i - 2], 1); |
1477 | else | |
14f9c5c9 AS |
1478 | return NULL; |
1479 | } | |
1480 | ||
4c4b4cd2 PH |
1481 | /* The number of index positions in the array-bounds type TYPE. |
1482 | Return 0 if TYPE is NULL. */ | |
1483 | ||
14f9c5c9 | 1484 | static int |
d2e4a39e | 1485 | desc_arity (struct type *type) |
14f9c5c9 AS |
1486 | { |
1487 | type = desc_base_type (type); | |
1488 | ||
1489 | if (type != NULL) | |
1490 | return TYPE_NFIELDS (type) / 2; | |
1491 | return 0; | |
1492 | } | |
1493 | ||
4c4b4cd2 PH |
1494 | /* Non-zero iff TYPE is a simple array type (not a pointer to one) or |
1495 | an array descriptor type (representing an unconstrained array | |
1496 | type). */ | |
1497 | ||
76a01679 JB |
1498 | static int |
1499 | ada_is_direct_array_type (struct type *type) | |
4c4b4cd2 PH |
1500 | { |
1501 | if (type == NULL) | |
1502 | return 0; | |
61ee279c | 1503 | type = ada_check_typedef (type); |
4c4b4cd2 | 1504 | return (TYPE_CODE (type) == TYPE_CODE_ARRAY |
76a01679 | 1505 | || ada_is_array_descriptor_type (type)); |
4c4b4cd2 PH |
1506 | } |
1507 | ||
52ce6436 PH |
1508 | /* Non-zero iff TYPE represents any kind of array in Ada, or a pointer |
1509 | * to one. */ | |
1510 | ||
1511 | int | |
1512 | ada_is_array_type (struct type *type) | |
1513 | { | |
1514 | while (type != NULL | |
1515 | && (TYPE_CODE (type) == TYPE_CODE_PTR | |
1516 | || TYPE_CODE (type) == TYPE_CODE_REF)) | |
1517 | type = TYPE_TARGET_TYPE (type); | |
1518 | return ada_is_direct_array_type (type); | |
1519 | } | |
1520 | ||
4c4b4cd2 | 1521 | /* Non-zero iff TYPE is a simple array type or pointer to one. */ |
14f9c5c9 | 1522 | |
14f9c5c9 | 1523 | int |
4c4b4cd2 | 1524 | ada_is_simple_array_type (struct type *type) |
14f9c5c9 AS |
1525 | { |
1526 | if (type == NULL) | |
1527 | return 0; | |
61ee279c | 1528 | type = ada_check_typedef (type); |
14f9c5c9 | 1529 | return (TYPE_CODE (type) == TYPE_CODE_ARRAY |
4c4b4cd2 PH |
1530 | || (TYPE_CODE (type) == TYPE_CODE_PTR |
1531 | && TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_ARRAY)); | |
14f9c5c9 AS |
1532 | } |
1533 | ||
4c4b4cd2 PH |
1534 | /* Non-zero iff TYPE belongs to a GNAT array descriptor. */ |
1535 | ||
14f9c5c9 | 1536 | int |
4c4b4cd2 | 1537 | ada_is_array_descriptor_type (struct type *type) |
14f9c5c9 | 1538 | { |
d2e4a39e | 1539 | struct type *data_type = desc_data_type (type); |
14f9c5c9 AS |
1540 | |
1541 | if (type == NULL) | |
1542 | return 0; | |
61ee279c | 1543 | type = ada_check_typedef (type); |
d2e4a39e | 1544 | return |
14f9c5c9 AS |
1545 | data_type != NULL |
1546 | && ((TYPE_CODE (data_type) == TYPE_CODE_PTR | |
4c4b4cd2 PH |
1547 | && TYPE_TARGET_TYPE (data_type) != NULL |
1548 | && TYPE_CODE (TYPE_TARGET_TYPE (data_type)) == TYPE_CODE_ARRAY) | |
1265e4aa | 1549 | || TYPE_CODE (data_type) == TYPE_CODE_ARRAY) |
14f9c5c9 AS |
1550 | && desc_arity (desc_bounds_type (type)) > 0; |
1551 | } | |
1552 | ||
1553 | /* Non-zero iff type is a partially mal-formed GNAT array | |
4c4b4cd2 | 1554 | descriptor. FIXME: This is to compensate for some problems with |
14f9c5c9 | 1555 | debugging output from GNAT. Re-examine periodically to see if it |
4c4b4cd2 PH |
1556 | is still needed. */ |
1557 | ||
14f9c5c9 | 1558 | int |
ebf56fd3 | 1559 | ada_is_bogus_array_descriptor (struct type *type) |
14f9c5c9 | 1560 | { |
d2e4a39e | 1561 | return |
14f9c5c9 AS |
1562 | type != NULL |
1563 | && TYPE_CODE (type) == TYPE_CODE_STRUCT | |
1564 | && (lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL | |
4c4b4cd2 PH |
1565 | || lookup_struct_elt_type (type, "P_ARRAY", 1) != NULL) |
1566 | && !ada_is_array_descriptor_type (type); | |
14f9c5c9 AS |
1567 | } |
1568 | ||
1569 | ||
4c4b4cd2 | 1570 | /* If ARR has a record type in the form of a standard GNAT array descriptor, |
14f9c5c9 | 1571 | (fat pointer) returns the type of the array data described---specifically, |
4c4b4cd2 | 1572 | a pointer-to-array type. If BOUNDS is non-zero, the bounds data are filled |
14f9c5c9 | 1573 | in from the descriptor; otherwise, they are left unspecified. If |
4c4b4cd2 PH |
1574 | the ARR denotes a null array descriptor and BOUNDS is non-zero, |
1575 | returns NULL. The result is simply the type of ARR if ARR is not | |
14f9c5c9 | 1576 | a descriptor. */ |
d2e4a39e AS |
1577 | struct type * |
1578 | ada_type_of_array (struct value *arr, int bounds) | |
14f9c5c9 | 1579 | { |
df407dfe AC |
1580 | if (ada_is_packed_array_type (value_type (arr))) |
1581 | return decode_packed_array_type (value_type (arr)); | |
14f9c5c9 | 1582 | |
df407dfe AC |
1583 | if (!ada_is_array_descriptor_type (value_type (arr))) |
1584 | return value_type (arr); | |
d2e4a39e AS |
1585 | |
1586 | if (!bounds) | |
1587 | return | |
df407dfe | 1588 | ada_check_typedef (TYPE_TARGET_TYPE (desc_data_type (value_type (arr)))); |
14f9c5c9 AS |
1589 | else |
1590 | { | |
d2e4a39e | 1591 | struct type *elt_type; |
14f9c5c9 | 1592 | int arity; |
d2e4a39e | 1593 | struct value *descriptor; |
df407dfe | 1594 | struct objfile *objf = TYPE_OBJFILE (value_type (arr)); |
14f9c5c9 | 1595 | |
df407dfe AC |
1596 | elt_type = ada_array_element_type (value_type (arr), -1); |
1597 | arity = ada_array_arity (value_type (arr)); | |
14f9c5c9 | 1598 | |
d2e4a39e | 1599 | if (elt_type == NULL || arity == 0) |
df407dfe | 1600 | return ada_check_typedef (value_type (arr)); |
14f9c5c9 AS |
1601 | |
1602 | descriptor = desc_bounds (arr); | |
d2e4a39e | 1603 | if (value_as_long (descriptor) == 0) |
4c4b4cd2 | 1604 | return NULL; |
d2e4a39e | 1605 | while (arity > 0) |
4c4b4cd2 PH |
1606 | { |
1607 | struct type *range_type = alloc_type (objf); | |
1608 | struct type *array_type = alloc_type (objf); | |
1609 | struct value *low = desc_one_bound (descriptor, arity, 0); | |
1610 | struct value *high = desc_one_bound (descriptor, arity, 1); | |
1611 | arity -= 1; | |
1612 | ||
df407dfe | 1613 | create_range_type (range_type, value_type (low), |
529cad9c PH |
1614 | longest_to_int (value_as_long (low)), |
1615 | longest_to_int (value_as_long (high))); | |
4c4b4cd2 PH |
1616 | elt_type = create_array_type (array_type, elt_type, range_type); |
1617 | } | |
14f9c5c9 AS |
1618 | |
1619 | return lookup_pointer_type (elt_type); | |
1620 | } | |
1621 | } | |
1622 | ||
1623 | /* If ARR does not represent an array, returns ARR unchanged. | |
4c4b4cd2 PH |
1624 | Otherwise, returns either a standard GDB array with bounds set |
1625 | appropriately or, if ARR is a non-null fat pointer, a pointer to a standard | |
1626 | GDB array. Returns NULL if ARR is a null fat pointer. */ | |
1627 | ||
d2e4a39e AS |
1628 | struct value * |
1629 | ada_coerce_to_simple_array_ptr (struct value *arr) | |
14f9c5c9 | 1630 | { |
df407dfe | 1631 | if (ada_is_array_descriptor_type (value_type (arr))) |
14f9c5c9 | 1632 | { |
d2e4a39e | 1633 | struct type *arrType = ada_type_of_array (arr, 1); |
14f9c5c9 | 1634 | if (arrType == NULL) |
4c4b4cd2 | 1635 | return NULL; |
14f9c5c9 AS |
1636 | return value_cast (arrType, value_copy (desc_data (arr))); |
1637 | } | |
df407dfe | 1638 | else if (ada_is_packed_array_type (value_type (arr))) |
14f9c5c9 AS |
1639 | return decode_packed_array (arr); |
1640 | else | |
1641 | return arr; | |
1642 | } | |
1643 | ||
1644 | /* If ARR does not represent an array, returns ARR unchanged. | |
1645 | Otherwise, returns a standard GDB array describing ARR (which may | |
4c4b4cd2 PH |
1646 | be ARR itself if it already is in the proper form). */ |
1647 | ||
1648 | static struct value * | |
d2e4a39e | 1649 | ada_coerce_to_simple_array (struct value *arr) |
14f9c5c9 | 1650 | { |
df407dfe | 1651 | if (ada_is_array_descriptor_type (value_type (arr))) |
14f9c5c9 | 1652 | { |
d2e4a39e | 1653 | struct value *arrVal = ada_coerce_to_simple_array_ptr (arr); |
14f9c5c9 | 1654 | if (arrVal == NULL) |
323e0a4a | 1655 | error (_("Bounds unavailable for null array pointer.")); |
529cad9c | 1656 | check_size (TYPE_TARGET_TYPE (value_type (arrVal))); |
14f9c5c9 AS |
1657 | return value_ind (arrVal); |
1658 | } | |
df407dfe | 1659 | else if (ada_is_packed_array_type (value_type (arr))) |
14f9c5c9 | 1660 | return decode_packed_array (arr); |
d2e4a39e | 1661 | else |
14f9c5c9 AS |
1662 | return arr; |
1663 | } | |
1664 | ||
1665 | /* If TYPE represents a GNAT array type, return it translated to an | |
1666 | ordinary GDB array type (possibly with BITSIZE fields indicating | |
4c4b4cd2 PH |
1667 | packing). For other types, is the identity. */ |
1668 | ||
d2e4a39e AS |
1669 | struct type * |
1670 | ada_coerce_to_simple_array_type (struct type *type) | |
14f9c5c9 | 1671 | { |
d2e4a39e AS |
1672 | struct value *mark = value_mark (); |
1673 | struct value *dummy = value_from_longest (builtin_type_long, 0); | |
1674 | struct type *result; | |
04624583 | 1675 | deprecated_set_value_type (dummy, type); |
14f9c5c9 | 1676 | result = ada_type_of_array (dummy, 0); |
4c4b4cd2 | 1677 | value_free_to_mark (mark); |
14f9c5c9 AS |
1678 | return result; |
1679 | } | |
1680 | ||
4c4b4cd2 PH |
1681 | /* Non-zero iff TYPE represents a standard GNAT packed-array type. */ |
1682 | ||
14f9c5c9 | 1683 | int |
d2e4a39e | 1684 | ada_is_packed_array_type (struct type *type) |
14f9c5c9 AS |
1685 | { |
1686 | if (type == NULL) | |
1687 | return 0; | |
4c4b4cd2 | 1688 | type = desc_base_type (type); |
61ee279c | 1689 | type = ada_check_typedef (type); |
d2e4a39e | 1690 | return |
14f9c5c9 AS |
1691 | ada_type_name (type) != NULL |
1692 | && strstr (ada_type_name (type), "___XP") != NULL; | |
1693 | } | |
1694 | ||
1695 | /* Given that TYPE is a standard GDB array type with all bounds filled | |
1696 | in, and that the element size of its ultimate scalar constituents | |
1697 | (that is, either its elements, or, if it is an array of arrays, its | |
1698 | elements' elements, etc.) is *ELT_BITS, return an identical type, | |
1699 | but with the bit sizes of its elements (and those of any | |
1700 | constituent arrays) recorded in the BITSIZE components of its | |
4c4b4cd2 PH |
1701 | TYPE_FIELD_BITSIZE values, and with *ELT_BITS set to its total size |
1702 | in bits. */ | |
1703 | ||
d2e4a39e AS |
1704 | static struct type * |
1705 | packed_array_type (struct type *type, long *elt_bits) | |
14f9c5c9 | 1706 | { |
d2e4a39e AS |
1707 | struct type *new_elt_type; |
1708 | struct type *new_type; | |
14f9c5c9 AS |
1709 | LONGEST low_bound, high_bound; |
1710 | ||
61ee279c | 1711 | type = ada_check_typedef (type); |
14f9c5c9 AS |
1712 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY) |
1713 | return type; | |
1714 | ||
1715 | new_type = alloc_type (TYPE_OBJFILE (type)); | |
61ee279c | 1716 | new_elt_type = packed_array_type (ada_check_typedef (TYPE_TARGET_TYPE (type)), |
4c4b4cd2 | 1717 | elt_bits); |
14f9c5c9 AS |
1718 | create_array_type (new_type, new_elt_type, TYPE_FIELD_TYPE (type, 0)); |
1719 | TYPE_FIELD_BITSIZE (new_type, 0) = *elt_bits; | |
1720 | TYPE_NAME (new_type) = ada_type_name (type); | |
1721 | ||
d2e4a39e | 1722 | if (get_discrete_bounds (TYPE_FIELD_TYPE (type, 0), |
4c4b4cd2 | 1723 | &low_bound, &high_bound) < 0) |
14f9c5c9 AS |
1724 | low_bound = high_bound = 0; |
1725 | if (high_bound < low_bound) | |
1726 | *elt_bits = TYPE_LENGTH (new_type) = 0; | |
d2e4a39e | 1727 | else |
14f9c5c9 AS |
1728 | { |
1729 | *elt_bits *= (high_bound - low_bound + 1); | |
d2e4a39e | 1730 | TYPE_LENGTH (new_type) = |
4c4b4cd2 | 1731 | (*elt_bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; |
14f9c5c9 AS |
1732 | } |
1733 | ||
4c4b4cd2 | 1734 | TYPE_FLAGS (new_type) |= TYPE_FLAG_FIXED_INSTANCE; |
14f9c5c9 AS |
1735 | return new_type; |
1736 | } | |
1737 | ||
4c4b4cd2 PH |
1738 | /* The array type encoded by TYPE, where ada_is_packed_array_type (TYPE). */ |
1739 | ||
d2e4a39e AS |
1740 | static struct type * |
1741 | decode_packed_array_type (struct type *type) | |
1742 | { | |
4c4b4cd2 | 1743 | struct symbol *sym; |
d2e4a39e | 1744 | struct block **blocks; |
61ee279c | 1745 | const char *raw_name = ada_type_name (ada_check_typedef (type)); |
d2e4a39e AS |
1746 | char *name = (char *) alloca (strlen (raw_name) + 1); |
1747 | char *tail = strstr (raw_name, "___XP"); | |
1748 | struct type *shadow_type; | |
14f9c5c9 AS |
1749 | long bits; |
1750 | int i, n; | |
1751 | ||
4c4b4cd2 PH |
1752 | type = desc_base_type (type); |
1753 | ||
14f9c5c9 AS |
1754 | memcpy (name, raw_name, tail - raw_name); |
1755 | name[tail - raw_name] = '\000'; | |
1756 | ||
4c4b4cd2 PH |
1757 | sym = standard_lookup (name, get_selected_block (0), VAR_DOMAIN); |
1758 | if (sym == NULL || SYMBOL_TYPE (sym) == NULL) | |
14f9c5c9 | 1759 | { |
323e0a4a | 1760 | lim_warning (_("could not find bounds information on packed array")); |
14f9c5c9 AS |
1761 | return NULL; |
1762 | } | |
4c4b4cd2 | 1763 | shadow_type = SYMBOL_TYPE (sym); |
14f9c5c9 AS |
1764 | |
1765 | if (TYPE_CODE (shadow_type) != TYPE_CODE_ARRAY) | |
1766 | { | |
323e0a4a | 1767 | lim_warning (_("could not understand bounds information on packed array")); |
14f9c5c9 AS |
1768 | return NULL; |
1769 | } | |
d2e4a39e | 1770 | |
14f9c5c9 AS |
1771 | if (sscanf (tail + sizeof ("___XP") - 1, "%ld", &bits) != 1) |
1772 | { | |
4c4b4cd2 | 1773 | lim_warning |
323e0a4a | 1774 | (_("could not understand bit size information on packed array")); |
14f9c5c9 AS |
1775 | return NULL; |
1776 | } | |
d2e4a39e | 1777 | |
14f9c5c9 AS |
1778 | return packed_array_type (shadow_type, &bits); |
1779 | } | |
1780 | ||
4c4b4cd2 | 1781 | /* Given that ARR is a struct value *indicating a GNAT packed array, |
14f9c5c9 AS |
1782 | returns a simple array that denotes that array. Its type is a |
1783 | standard GDB array type except that the BITSIZEs of the array | |
1784 | target types are set to the number of bits in each element, and the | |
4c4b4cd2 | 1785 | type length is set appropriately. */ |
14f9c5c9 | 1786 | |
d2e4a39e AS |
1787 | static struct value * |
1788 | decode_packed_array (struct value *arr) | |
14f9c5c9 | 1789 | { |
4c4b4cd2 | 1790 | struct type *type; |
14f9c5c9 | 1791 | |
4c4b4cd2 | 1792 | arr = ada_coerce_ref (arr); |
df407dfe | 1793 | if (TYPE_CODE (value_type (arr)) == TYPE_CODE_PTR) |
4c4b4cd2 PH |
1794 | arr = ada_value_ind (arr); |
1795 | ||
df407dfe | 1796 | type = decode_packed_array_type (value_type (arr)); |
14f9c5c9 AS |
1797 | if (type == NULL) |
1798 | { | |
323e0a4a | 1799 | error (_("can't unpack array")); |
14f9c5c9 AS |
1800 | return NULL; |
1801 | } | |
61ee279c | 1802 | |
df407dfe | 1803 | if (BITS_BIG_ENDIAN && ada_is_modular_type (value_type (arr))) |
61ee279c PH |
1804 | { |
1805 | /* This is a (right-justified) modular type representing a packed | |
1806 | array with no wrapper. In order to interpret the value through | |
1807 | the (left-justified) packed array type we just built, we must | |
1808 | first left-justify it. */ | |
1809 | int bit_size, bit_pos; | |
1810 | ULONGEST mod; | |
1811 | ||
df407dfe | 1812 | mod = ada_modulus (value_type (arr)) - 1; |
61ee279c PH |
1813 | bit_size = 0; |
1814 | while (mod > 0) | |
1815 | { | |
1816 | bit_size += 1; | |
1817 | mod >>= 1; | |
1818 | } | |
df407dfe | 1819 | bit_pos = HOST_CHAR_BIT * TYPE_LENGTH (value_type (arr)) - bit_size; |
61ee279c PH |
1820 | arr = ada_value_primitive_packed_val (arr, NULL, |
1821 | bit_pos / HOST_CHAR_BIT, | |
1822 | bit_pos % HOST_CHAR_BIT, | |
1823 | bit_size, | |
1824 | type); | |
1825 | } | |
1826 | ||
4c4b4cd2 | 1827 | return coerce_unspec_val_to_type (arr, type); |
14f9c5c9 AS |
1828 | } |
1829 | ||
1830 | ||
1831 | /* The value of the element of packed array ARR at the ARITY indices | |
4c4b4cd2 | 1832 | given in IND. ARR must be a simple array. */ |
14f9c5c9 | 1833 | |
d2e4a39e AS |
1834 | static struct value * |
1835 | value_subscript_packed (struct value *arr, int arity, struct value **ind) | |
14f9c5c9 AS |
1836 | { |
1837 | int i; | |
1838 | int bits, elt_off, bit_off; | |
1839 | long elt_total_bit_offset; | |
d2e4a39e AS |
1840 | struct type *elt_type; |
1841 | struct value *v; | |
14f9c5c9 AS |
1842 | |
1843 | bits = 0; | |
1844 | elt_total_bit_offset = 0; | |
df407dfe | 1845 | elt_type = ada_check_typedef (value_type (arr)); |
d2e4a39e | 1846 | for (i = 0; i < arity; i += 1) |
14f9c5c9 | 1847 | { |
d2e4a39e | 1848 | if (TYPE_CODE (elt_type) != TYPE_CODE_ARRAY |
4c4b4cd2 PH |
1849 | || TYPE_FIELD_BITSIZE (elt_type, 0) == 0) |
1850 | error | |
323e0a4a | 1851 | (_("attempt to do packed indexing of something other than a packed array")); |
14f9c5c9 | 1852 | else |
4c4b4cd2 PH |
1853 | { |
1854 | struct type *range_type = TYPE_INDEX_TYPE (elt_type); | |
1855 | LONGEST lowerbound, upperbound; | |
1856 | LONGEST idx; | |
1857 | ||
1858 | if (get_discrete_bounds (range_type, &lowerbound, &upperbound) < 0) | |
1859 | { | |
323e0a4a | 1860 | lim_warning (_("don't know bounds of array")); |
4c4b4cd2 PH |
1861 | lowerbound = upperbound = 0; |
1862 | } | |
1863 | ||
1864 | idx = value_as_long (value_pos_atr (ind[i])); | |
1865 | if (idx < lowerbound || idx > upperbound) | |
323e0a4a | 1866 | lim_warning (_("packed array index %ld out of bounds"), (long) idx); |
4c4b4cd2 PH |
1867 | bits = TYPE_FIELD_BITSIZE (elt_type, 0); |
1868 | elt_total_bit_offset += (idx - lowerbound) * bits; | |
61ee279c | 1869 | elt_type = ada_check_typedef (TYPE_TARGET_TYPE (elt_type)); |
4c4b4cd2 | 1870 | } |
14f9c5c9 AS |
1871 | } |
1872 | elt_off = elt_total_bit_offset / HOST_CHAR_BIT; | |
1873 | bit_off = elt_total_bit_offset % HOST_CHAR_BIT; | |
d2e4a39e AS |
1874 | |
1875 | v = ada_value_primitive_packed_val (arr, NULL, elt_off, bit_off, | |
4c4b4cd2 | 1876 | bits, elt_type); |
14f9c5c9 AS |
1877 | return v; |
1878 | } | |
1879 | ||
4c4b4cd2 | 1880 | /* Non-zero iff TYPE includes negative integer values. */ |
14f9c5c9 AS |
1881 | |
1882 | static int | |
d2e4a39e | 1883 | has_negatives (struct type *type) |
14f9c5c9 | 1884 | { |
d2e4a39e AS |
1885 | switch (TYPE_CODE (type)) |
1886 | { | |
1887 | default: | |
1888 | return 0; | |
1889 | case TYPE_CODE_INT: | |
1890 | return !TYPE_UNSIGNED (type); | |
1891 | case TYPE_CODE_RANGE: | |
1892 | return TYPE_LOW_BOUND (type) < 0; | |
1893 | } | |
14f9c5c9 | 1894 | } |
d2e4a39e | 1895 | |
14f9c5c9 AS |
1896 | |
1897 | /* Create a new value of type TYPE from the contents of OBJ starting | |
1898 | at byte OFFSET, and bit offset BIT_OFFSET within that byte, | |
1899 | proceeding for BIT_SIZE bits. If OBJ is an lval in memory, then | |
4c4b4cd2 PH |
1900 | assigning through the result will set the field fetched from. |
1901 | VALADDR is ignored unless OBJ is NULL, in which case, | |
1902 | VALADDR+OFFSET must address the start of storage containing the | |
1903 | packed value. The value returned in this case is never an lval. | |
1904 | Assumes 0 <= BIT_OFFSET < HOST_CHAR_BIT. */ | |
14f9c5c9 | 1905 | |
d2e4a39e | 1906 | struct value * |
fc1a4b47 | 1907 | ada_value_primitive_packed_val (struct value *obj, const gdb_byte *valaddr, |
a2bd3dcd | 1908 | long offset, int bit_offset, int bit_size, |
4c4b4cd2 | 1909 | struct type *type) |
14f9c5c9 | 1910 | { |
d2e4a39e | 1911 | struct value *v; |
4c4b4cd2 PH |
1912 | int src, /* Index into the source area */ |
1913 | targ, /* Index into the target area */ | |
1914 | srcBitsLeft, /* Number of source bits left to move */ | |
1915 | nsrc, ntarg, /* Number of source and target bytes */ | |
1916 | unusedLS, /* Number of bits in next significant | |
1917 | byte of source that are unused */ | |
1918 | accumSize; /* Number of meaningful bits in accum */ | |
1919 | unsigned char *bytes; /* First byte containing data to unpack */ | |
d2e4a39e | 1920 | unsigned char *unpacked; |
4c4b4cd2 | 1921 | unsigned long accum; /* Staging area for bits being transferred */ |
14f9c5c9 AS |
1922 | unsigned char sign; |
1923 | int len = (bit_size + bit_offset + HOST_CHAR_BIT - 1) / 8; | |
4c4b4cd2 PH |
1924 | /* Transmit bytes from least to most significant; delta is the direction |
1925 | the indices move. */ | |
14f9c5c9 AS |
1926 | int delta = BITS_BIG_ENDIAN ? -1 : 1; |
1927 | ||
61ee279c | 1928 | type = ada_check_typedef (type); |
14f9c5c9 AS |
1929 | |
1930 | if (obj == NULL) | |
1931 | { | |
1932 | v = allocate_value (type); | |
d2e4a39e | 1933 | bytes = (unsigned char *) (valaddr + offset); |
14f9c5c9 | 1934 | } |
d69fe07e | 1935 | else if (value_lazy (obj)) |
14f9c5c9 AS |
1936 | { |
1937 | v = value_at (type, | |
df407dfe | 1938 | VALUE_ADDRESS (obj) + value_offset (obj) + offset); |
d2e4a39e | 1939 | bytes = (unsigned char *) alloca (len); |
14f9c5c9 AS |
1940 | read_memory (VALUE_ADDRESS (v), bytes, len); |
1941 | } | |
d2e4a39e | 1942 | else |
14f9c5c9 AS |
1943 | { |
1944 | v = allocate_value (type); | |
0fd88904 | 1945 | bytes = (unsigned char *) value_contents (obj) + offset; |
14f9c5c9 | 1946 | } |
d2e4a39e AS |
1947 | |
1948 | if (obj != NULL) | |
14f9c5c9 AS |
1949 | { |
1950 | VALUE_LVAL (v) = VALUE_LVAL (obj); | |
1951 | if (VALUE_LVAL (obj) == lval_internalvar) | |
4c4b4cd2 | 1952 | VALUE_LVAL (v) = lval_internalvar_component; |
df407dfe | 1953 | VALUE_ADDRESS (v) = VALUE_ADDRESS (obj) + value_offset (obj) + offset; |
9bbda503 AC |
1954 | set_value_bitpos (v, bit_offset + value_bitpos (obj)); |
1955 | set_value_bitsize (v, bit_size); | |
df407dfe | 1956 | if (value_bitpos (v) >= HOST_CHAR_BIT) |
4c4b4cd2 PH |
1957 | { |
1958 | VALUE_ADDRESS (v) += 1; | |
9bbda503 | 1959 | set_value_bitpos (v, value_bitpos (v) - HOST_CHAR_BIT); |
4c4b4cd2 | 1960 | } |
14f9c5c9 AS |
1961 | } |
1962 | else | |
9bbda503 | 1963 | set_value_bitsize (v, bit_size); |
0fd88904 | 1964 | unpacked = (unsigned char *) value_contents (v); |
14f9c5c9 AS |
1965 | |
1966 | srcBitsLeft = bit_size; | |
1967 | nsrc = len; | |
1968 | ntarg = TYPE_LENGTH (type); | |
1969 | sign = 0; | |
1970 | if (bit_size == 0) | |
1971 | { | |
1972 | memset (unpacked, 0, TYPE_LENGTH (type)); | |
1973 | return v; | |
1974 | } | |
1975 | else if (BITS_BIG_ENDIAN) | |
1976 | { | |
d2e4a39e | 1977 | src = len - 1; |
1265e4aa JB |
1978 | if (has_negatives (type) |
1979 | && ((bytes[0] << bit_offset) & (1 << (HOST_CHAR_BIT - 1)))) | |
4c4b4cd2 | 1980 | sign = ~0; |
d2e4a39e AS |
1981 | |
1982 | unusedLS = | |
4c4b4cd2 PH |
1983 | (HOST_CHAR_BIT - (bit_size + bit_offset) % HOST_CHAR_BIT) |
1984 | % HOST_CHAR_BIT; | |
14f9c5c9 AS |
1985 | |
1986 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
1987 | { |
1988 | case TYPE_CODE_ARRAY: | |
1989 | case TYPE_CODE_UNION: | |
1990 | case TYPE_CODE_STRUCT: | |
1991 | /* Non-scalar values must be aligned at a byte boundary... */ | |
1992 | accumSize = | |
1993 | (HOST_CHAR_BIT - bit_size % HOST_CHAR_BIT) % HOST_CHAR_BIT; | |
1994 | /* ... And are placed at the beginning (most-significant) bytes | |
1995 | of the target. */ | |
529cad9c | 1996 | targ = (bit_size + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT - 1; |
4c4b4cd2 PH |
1997 | break; |
1998 | default: | |
1999 | accumSize = 0; | |
2000 | targ = TYPE_LENGTH (type) - 1; | |
2001 | break; | |
2002 | } | |
14f9c5c9 | 2003 | } |
d2e4a39e | 2004 | else |
14f9c5c9 AS |
2005 | { |
2006 | int sign_bit_offset = (bit_size + bit_offset - 1) % 8; | |
2007 | ||
2008 | src = targ = 0; | |
2009 | unusedLS = bit_offset; | |
2010 | accumSize = 0; | |
2011 | ||
d2e4a39e | 2012 | if (has_negatives (type) && (bytes[len - 1] & (1 << sign_bit_offset))) |
4c4b4cd2 | 2013 | sign = ~0; |
14f9c5c9 | 2014 | } |
d2e4a39e | 2015 | |
14f9c5c9 AS |
2016 | accum = 0; |
2017 | while (nsrc > 0) | |
2018 | { | |
2019 | /* Mask for removing bits of the next source byte that are not | |
4c4b4cd2 | 2020 | part of the value. */ |
d2e4a39e | 2021 | unsigned int unusedMSMask = |
4c4b4cd2 PH |
2022 | (1 << (srcBitsLeft >= HOST_CHAR_BIT ? HOST_CHAR_BIT : srcBitsLeft)) - |
2023 | 1; | |
2024 | /* Sign-extend bits for this byte. */ | |
14f9c5c9 | 2025 | unsigned int signMask = sign & ~unusedMSMask; |
d2e4a39e | 2026 | accum |= |
4c4b4cd2 | 2027 | (((bytes[src] >> unusedLS) & unusedMSMask) | signMask) << accumSize; |
14f9c5c9 | 2028 | accumSize += HOST_CHAR_BIT - unusedLS; |
d2e4a39e | 2029 | if (accumSize >= HOST_CHAR_BIT) |
4c4b4cd2 PH |
2030 | { |
2031 | unpacked[targ] = accum & ~(~0L << HOST_CHAR_BIT); | |
2032 | accumSize -= HOST_CHAR_BIT; | |
2033 | accum >>= HOST_CHAR_BIT; | |
2034 | ntarg -= 1; | |
2035 | targ += delta; | |
2036 | } | |
14f9c5c9 AS |
2037 | srcBitsLeft -= HOST_CHAR_BIT - unusedLS; |
2038 | unusedLS = 0; | |
2039 | nsrc -= 1; | |
2040 | src += delta; | |
2041 | } | |
2042 | while (ntarg > 0) | |
2043 | { | |
2044 | accum |= sign << accumSize; | |
2045 | unpacked[targ] = accum & ~(~0L << HOST_CHAR_BIT); | |
2046 | accumSize -= HOST_CHAR_BIT; | |
2047 | accum >>= HOST_CHAR_BIT; | |
2048 | ntarg -= 1; | |
2049 | targ += delta; | |
2050 | } | |
2051 | ||
2052 | return v; | |
2053 | } | |
d2e4a39e | 2054 | |
14f9c5c9 AS |
2055 | /* Move N bits from SOURCE, starting at bit offset SRC_OFFSET to |
2056 | TARGET, starting at bit offset TARG_OFFSET. SOURCE and TARGET must | |
4c4b4cd2 | 2057 | not overlap. */ |
14f9c5c9 | 2058 | static void |
fc1a4b47 | 2059 | move_bits (gdb_byte *target, int targ_offset, const gdb_byte *source, |
0fd88904 | 2060 | int src_offset, int n) |
14f9c5c9 AS |
2061 | { |
2062 | unsigned int accum, mask; | |
2063 | int accum_bits, chunk_size; | |
2064 | ||
2065 | target += targ_offset / HOST_CHAR_BIT; | |
2066 | targ_offset %= HOST_CHAR_BIT; | |
2067 | source += src_offset / HOST_CHAR_BIT; | |
2068 | src_offset %= HOST_CHAR_BIT; | |
d2e4a39e | 2069 | if (BITS_BIG_ENDIAN) |
14f9c5c9 AS |
2070 | { |
2071 | accum = (unsigned char) *source; | |
2072 | source += 1; | |
2073 | accum_bits = HOST_CHAR_BIT - src_offset; | |
2074 | ||
d2e4a39e | 2075 | while (n > 0) |
4c4b4cd2 PH |
2076 | { |
2077 | int unused_right; | |
2078 | accum = (accum << HOST_CHAR_BIT) + (unsigned char) *source; | |
2079 | accum_bits += HOST_CHAR_BIT; | |
2080 | source += 1; | |
2081 | chunk_size = HOST_CHAR_BIT - targ_offset; | |
2082 | if (chunk_size > n) | |
2083 | chunk_size = n; | |
2084 | unused_right = HOST_CHAR_BIT - (chunk_size + targ_offset); | |
2085 | mask = ((1 << chunk_size) - 1) << unused_right; | |
2086 | *target = | |
2087 | (*target & ~mask) | |
2088 | | ((accum >> (accum_bits - chunk_size - unused_right)) & mask); | |
2089 | n -= chunk_size; | |
2090 | accum_bits -= chunk_size; | |
2091 | target += 1; | |
2092 | targ_offset = 0; | |
2093 | } | |
14f9c5c9 AS |
2094 | } |
2095 | else | |
2096 | { | |
2097 | accum = (unsigned char) *source >> src_offset; | |
2098 | source += 1; | |
2099 | accum_bits = HOST_CHAR_BIT - src_offset; | |
2100 | ||
d2e4a39e | 2101 | while (n > 0) |
4c4b4cd2 PH |
2102 | { |
2103 | accum = accum + ((unsigned char) *source << accum_bits); | |
2104 | accum_bits += HOST_CHAR_BIT; | |
2105 | source += 1; | |
2106 | chunk_size = HOST_CHAR_BIT - targ_offset; | |
2107 | if (chunk_size > n) | |
2108 | chunk_size = n; | |
2109 | mask = ((1 << chunk_size) - 1) << targ_offset; | |
2110 | *target = (*target & ~mask) | ((accum << targ_offset) & mask); | |
2111 | n -= chunk_size; | |
2112 | accum_bits -= chunk_size; | |
2113 | accum >>= chunk_size; | |
2114 | target += 1; | |
2115 | targ_offset = 0; | |
2116 | } | |
14f9c5c9 AS |
2117 | } |
2118 | } | |
2119 | ||
14f9c5c9 AS |
2120 | /* Store the contents of FROMVAL into the location of TOVAL. |
2121 | Return a new value with the location of TOVAL and contents of | |
2122 | FROMVAL. Handles assignment into packed fields that have | |
4c4b4cd2 | 2123 | floating-point or non-scalar types. */ |
14f9c5c9 | 2124 | |
d2e4a39e AS |
2125 | static struct value * |
2126 | ada_value_assign (struct value *toval, struct value *fromval) | |
14f9c5c9 | 2127 | { |
df407dfe AC |
2128 | struct type *type = value_type (toval); |
2129 | int bits = value_bitsize (toval); | |
14f9c5c9 | 2130 | |
52ce6436 PH |
2131 | toval = ada_coerce_ref (toval); |
2132 | fromval = ada_coerce_ref (fromval); | |
2133 | ||
2134 | if (ada_is_direct_array_type (value_type (toval))) | |
2135 | toval = ada_coerce_to_simple_array (toval); | |
2136 | if (ada_is_direct_array_type (value_type (fromval))) | |
2137 | fromval = ada_coerce_to_simple_array (fromval); | |
2138 | ||
88e3b34b | 2139 | if (!deprecated_value_modifiable (toval)) |
323e0a4a | 2140 | error (_("Left operand of assignment is not a modifiable lvalue.")); |
14f9c5c9 | 2141 | |
d2e4a39e | 2142 | if (VALUE_LVAL (toval) == lval_memory |
14f9c5c9 | 2143 | && bits > 0 |
d2e4a39e | 2144 | && (TYPE_CODE (type) == TYPE_CODE_FLT |
4c4b4cd2 | 2145 | || TYPE_CODE (type) == TYPE_CODE_STRUCT)) |
14f9c5c9 | 2146 | { |
df407dfe AC |
2147 | int len = (value_bitpos (toval) |
2148 | + bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; | |
d2e4a39e AS |
2149 | char *buffer = (char *) alloca (len); |
2150 | struct value *val; | |
52ce6436 | 2151 | CORE_ADDR to_addr = VALUE_ADDRESS (toval) + value_offset (toval); |
14f9c5c9 AS |
2152 | |
2153 | if (TYPE_CODE (type) == TYPE_CODE_FLT) | |
4c4b4cd2 | 2154 | fromval = value_cast (type, fromval); |
14f9c5c9 | 2155 | |
52ce6436 | 2156 | read_memory (to_addr, buffer, len); |
14f9c5c9 | 2157 | if (BITS_BIG_ENDIAN) |
df407dfe | 2158 | move_bits (buffer, value_bitpos (toval), |
0fd88904 | 2159 | value_contents (fromval), |
df407dfe | 2160 | TYPE_LENGTH (value_type (fromval)) * TARGET_CHAR_BIT - |
4c4b4cd2 | 2161 | bits, bits); |
14f9c5c9 | 2162 | else |
0fd88904 | 2163 | move_bits (buffer, value_bitpos (toval), value_contents (fromval), |
4c4b4cd2 | 2164 | 0, bits); |
52ce6436 PH |
2165 | write_memory (to_addr, buffer, len); |
2166 | if (deprecated_memory_changed_hook) | |
2167 | deprecated_memory_changed_hook (to_addr, len); | |
2168 | ||
14f9c5c9 | 2169 | val = value_copy (toval); |
0fd88904 | 2170 | memcpy (value_contents_raw (val), value_contents (fromval), |
4c4b4cd2 | 2171 | TYPE_LENGTH (type)); |
04624583 | 2172 | deprecated_set_value_type (val, type); |
d2e4a39e | 2173 | |
14f9c5c9 AS |
2174 | return val; |
2175 | } | |
2176 | ||
2177 | return value_assign (toval, fromval); | |
2178 | } | |
2179 | ||
2180 | ||
52ce6436 PH |
2181 | /* Given that COMPONENT is a memory lvalue that is part of the lvalue |
2182 | * CONTAINER, assign the contents of VAL to COMPONENTS's place in | |
2183 | * CONTAINER. Modifies the VALUE_CONTENTS of CONTAINER only, not | |
2184 | * COMPONENT, and not the inferior's memory. The current contents | |
2185 | * of COMPONENT are ignored. */ | |
2186 | static void | |
2187 | value_assign_to_component (struct value *container, struct value *component, | |
2188 | struct value *val) | |
2189 | { | |
2190 | LONGEST offset_in_container = | |
2191 | (LONGEST) (VALUE_ADDRESS (component) + value_offset (component) | |
2192 | - VALUE_ADDRESS (container) - value_offset (container)); | |
2193 | int bit_offset_in_container = | |
2194 | value_bitpos (component) - value_bitpos (container); | |
2195 | int bits; | |
2196 | ||
2197 | val = value_cast (value_type (component), val); | |
2198 | ||
2199 | if (value_bitsize (component) == 0) | |
2200 | bits = TARGET_CHAR_BIT * TYPE_LENGTH (value_type (component)); | |
2201 | else | |
2202 | bits = value_bitsize (component); | |
2203 | ||
2204 | if (BITS_BIG_ENDIAN) | |
2205 | move_bits (value_contents_writeable (container) + offset_in_container, | |
2206 | value_bitpos (container) + bit_offset_in_container, | |
2207 | value_contents (val), | |
2208 | TYPE_LENGTH (value_type (component)) * TARGET_CHAR_BIT - bits, | |
2209 | bits); | |
2210 | else | |
2211 | move_bits (value_contents_writeable (container) + offset_in_container, | |
2212 | value_bitpos (container) + bit_offset_in_container, | |
2213 | value_contents (val), 0, bits); | |
2214 | } | |
2215 | ||
4c4b4cd2 PH |
2216 | /* The value of the element of array ARR at the ARITY indices given in IND. |
2217 | ARR may be either a simple array, GNAT array descriptor, or pointer | |
14f9c5c9 AS |
2218 | thereto. */ |
2219 | ||
d2e4a39e AS |
2220 | struct value * |
2221 | ada_value_subscript (struct value *arr, int arity, struct value **ind) | |
14f9c5c9 AS |
2222 | { |
2223 | int k; | |
d2e4a39e AS |
2224 | struct value *elt; |
2225 | struct type *elt_type; | |
14f9c5c9 AS |
2226 | |
2227 | elt = ada_coerce_to_simple_array (arr); | |
2228 | ||
df407dfe | 2229 | elt_type = ada_check_typedef (value_type (elt)); |
d2e4a39e | 2230 | if (TYPE_CODE (elt_type) == TYPE_CODE_ARRAY |
14f9c5c9 AS |
2231 | && TYPE_FIELD_BITSIZE (elt_type, 0) > 0) |
2232 | return value_subscript_packed (elt, arity, ind); | |
2233 | ||
2234 | for (k = 0; k < arity; k += 1) | |
2235 | { | |
2236 | if (TYPE_CODE (elt_type) != TYPE_CODE_ARRAY) | |
323e0a4a | 2237 | error (_("too many subscripts (%d expected)"), k); |
14f9c5c9 AS |
2238 | elt = value_subscript (elt, value_pos_atr (ind[k])); |
2239 | } | |
2240 | return elt; | |
2241 | } | |
2242 | ||
2243 | /* Assuming ARR is a pointer to a standard GDB array of type TYPE, the | |
2244 | value of the element of *ARR at the ARITY indices given in | |
4c4b4cd2 | 2245 | IND. Does not read the entire array into memory. */ |
14f9c5c9 | 2246 | |
d2e4a39e AS |
2247 | struct value * |
2248 | ada_value_ptr_subscript (struct value *arr, struct type *type, int arity, | |
4c4b4cd2 | 2249 | struct value **ind) |
14f9c5c9 AS |
2250 | { |
2251 | int k; | |
2252 | ||
2253 | for (k = 0; k < arity; k += 1) | |
2254 | { | |
2255 | LONGEST lwb, upb; | |
d2e4a39e | 2256 | struct value *idx; |
14f9c5c9 AS |
2257 | |
2258 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY) | |
323e0a4a | 2259 | error (_("too many subscripts (%d expected)"), k); |
d2e4a39e | 2260 | arr = value_cast (lookup_pointer_type (TYPE_TARGET_TYPE (type)), |
4c4b4cd2 | 2261 | value_copy (arr)); |
14f9c5c9 | 2262 | get_discrete_bounds (TYPE_INDEX_TYPE (type), &lwb, &upb); |
4c4b4cd2 PH |
2263 | idx = value_pos_atr (ind[k]); |
2264 | if (lwb != 0) | |
2265 | idx = value_sub (idx, value_from_longest (builtin_type_int, lwb)); | |
14f9c5c9 AS |
2266 | arr = value_add (arr, idx); |
2267 | type = TYPE_TARGET_TYPE (type); | |
2268 | } | |
2269 | ||
2270 | return value_ind (arr); | |
2271 | } | |
2272 | ||
0b5d8877 PH |
2273 | /* Given that ARRAY_PTR is a pointer or reference to an array of type TYPE (the |
2274 | actual type of ARRAY_PTR is ignored), returns a reference to | |
2275 | the Ada slice of HIGH-LOW+1 elements starting at index LOW. The lower | |
2276 | bound of this array is LOW, as per Ada rules. */ | |
2277 | static struct value * | |
6c038f32 | 2278 | ada_value_slice_ptr (struct value *array_ptr, struct type *type, |
0b5d8877 PH |
2279 | int low, int high) |
2280 | { | |
6c038f32 | 2281 | CORE_ADDR base = value_as_address (array_ptr) |
0b5d8877 PH |
2282 | + ((low - TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type))) |
2283 | * TYPE_LENGTH (TYPE_TARGET_TYPE (type))); | |
6c038f32 PH |
2284 | struct type *index_type = |
2285 | create_range_type (NULL, TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (type)), | |
0b5d8877 | 2286 | low, high); |
6c038f32 | 2287 | struct type *slice_type = |
0b5d8877 PH |
2288 | create_array_type (NULL, TYPE_TARGET_TYPE (type), index_type); |
2289 | return value_from_pointer (lookup_reference_type (slice_type), base); | |
2290 | } | |
2291 | ||
2292 | ||
2293 | static struct value * | |
2294 | ada_value_slice (struct value *array, int low, int high) | |
2295 | { | |
df407dfe | 2296 | struct type *type = value_type (array); |
6c038f32 | 2297 | struct type *index_type = |
0b5d8877 | 2298 | create_range_type (NULL, TYPE_INDEX_TYPE (type), low, high); |
6c038f32 | 2299 | struct type *slice_type = |
0b5d8877 | 2300 | create_array_type (NULL, TYPE_TARGET_TYPE (type), index_type); |
6c038f32 | 2301 | return value_cast (slice_type, value_slice (array, low, high - low + 1)); |
0b5d8877 PH |
2302 | } |
2303 | ||
14f9c5c9 AS |
2304 | /* If type is a record type in the form of a standard GNAT array |
2305 | descriptor, returns the number of dimensions for type. If arr is a | |
2306 | simple array, returns the number of "array of"s that prefix its | |
4c4b4cd2 | 2307 | type designation. Otherwise, returns 0. */ |
14f9c5c9 AS |
2308 | |
2309 | int | |
d2e4a39e | 2310 | ada_array_arity (struct type *type) |
14f9c5c9 AS |
2311 | { |
2312 | int arity; | |
2313 | ||
2314 | if (type == NULL) | |
2315 | return 0; | |
2316 | ||
2317 | type = desc_base_type (type); | |
2318 | ||
2319 | arity = 0; | |
d2e4a39e | 2320 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
14f9c5c9 | 2321 | return desc_arity (desc_bounds_type (type)); |
d2e4a39e AS |
2322 | else |
2323 | while (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
14f9c5c9 | 2324 | { |
4c4b4cd2 | 2325 | arity += 1; |
61ee279c | 2326 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
14f9c5c9 | 2327 | } |
d2e4a39e | 2328 | |
14f9c5c9 AS |
2329 | return arity; |
2330 | } | |
2331 | ||
2332 | /* If TYPE is a record type in the form of a standard GNAT array | |
2333 | descriptor or a simple array type, returns the element type for | |
2334 | TYPE after indexing by NINDICES indices, or by all indices if | |
4c4b4cd2 | 2335 | NINDICES is -1. Otherwise, returns NULL. */ |
14f9c5c9 | 2336 | |
d2e4a39e AS |
2337 | struct type * |
2338 | ada_array_element_type (struct type *type, int nindices) | |
14f9c5c9 AS |
2339 | { |
2340 | type = desc_base_type (type); | |
2341 | ||
d2e4a39e | 2342 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
14f9c5c9 AS |
2343 | { |
2344 | int k; | |
d2e4a39e | 2345 | struct type *p_array_type; |
14f9c5c9 AS |
2346 | |
2347 | p_array_type = desc_data_type (type); | |
2348 | ||
2349 | k = ada_array_arity (type); | |
2350 | if (k == 0) | |
4c4b4cd2 | 2351 | return NULL; |
d2e4a39e | 2352 | |
4c4b4cd2 | 2353 | /* Initially p_array_type = elt_type(*)[]...(k times)...[]. */ |
14f9c5c9 | 2354 | if (nindices >= 0 && k > nindices) |
4c4b4cd2 | 2355 | k = nindices; |
14f9c5c9 | 2356 | p_array_type = TYPE_TARGET_TYPE (p_array_type); |
d2e4a39e | 2357 | while (k > 0 && p_array_type != NULL) |
4c4b4cd2 | 2358 | { |
61ee279c | 2359 | p_array_type = ada_check_typedef (TYPE_TARGET_TYPE (p_array_type)); |
4c4b4cd2 PH |
2360 | k -= 1; |
2361 | } | |
14f9c5c9 AS |
2362 | return p_array_type; |
2363 | } | |
2364 | else if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
2365 | { | |
2366 | while (nindices != 0 && TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
4c4b4cd2 PH |
2367 | { |
2368 | type = TYPE_TARGET_TYPE (type); | |
2369 | nindices -= 1; | |
2370 | } | |
14f9c5c9 AS |
2371 | return type; |
2372 | } | |
2373 | ||
2374 | return NULL; | |
2375 | } | |
2376 | ||
4c4b4cd2 PH |
2377 | /* The type of nth index in arrays of given type (n numbering from 1). |
2378 | Does not examine memory. */ | |
14f9c5c9 | 2379 | |
d2e4a39e AS |
2380 | struct type * |
2381 | ada_index_type (struct type *type, int n) | |
14f9c5c9 | 2382 | { |
4c4b4cd2 PH |
2383 | struct type *result_type; |
2384 | ||
14f9c5c9 AS |
2385 | type = desc_base_type (type); |
2386 | ||
2387 | if (n > ada_array_arity (type)) | |
2388 | return NULL; | |
2389 | ||
4c4b4cd2 | 2390 | if (ada_is_simple_array_type (type)) |
14f9c5c9 AS |
2391 | { |
2392 | int i; | |
2393 | ||
2394 | for (i = 1; i < n; i += 1) | |
4c4b4cd2 PH |
2395 | type = TYPE_TARGET_TYPE (type); |
2396 | result_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0)); | |
2397 | /* FIXME: The stabs type r(0,0);bound;bound in an array type | |
2398 | has a target type of TYPE_CODE_UNDEF. We compensate here, but | |
76a01679 JB |
2399 | perhaps stabsread.c would make more sense. */ |
2400 | if (result_type == NULL || TYPE_CODE (result_type) == TYPE_CODE_UNDEF) | |
2401 | result_type = builtin_type_int; | |
14f9c5c9 | 2402 | |
4c4b4cd2 | 2403 | return result_type; |
14f9c5c9 | 2404 | } |
d2e4a39e | 2405 | else |
14f9c5c9 AS |
2406 | return desc_index_type (desc_bounds_type (type), n); |
2407 | } | |
2408 | ||
2409 | /* Given that arr is an array type, returns the lower bound of the | |
2410 | Nth index (numbering from 1) if WHICH is 0, and the upper bound if | |
4c4b4cd2 PH |
2411 | WHICH is 1. This returns bounds 0 .. -1 if ARR_TYPE is an |
2412 | array-descriptor type. If TYPEP is non-null, *TYPEP is set to the | |
2413 | bounds type. It works for other arrays with bounds supplied by | |
2414 | run-time quantities other than discriminants. */ | |
14f9c5c9 AS |
2415 | |
2416 | LONGEST | |
d2e4a39e | 2417 | ada_array_bound_from_type (struct type * arr_type, int n, int which, |
4c4b4cd2 | 2418 | struct type ** typep) |
14f9c5c9 | 2419 | { |
d2e4a39e AS |
2420 | struct type *type; |
2421 | struct type *index_type_desc; | |
14f9c5c9 AS |
2422 | |
2423 | if (ada_is_packed_array_type (arr_type)) | |
2424 | arr_type = decode_packed_array_type (arr_type); | |
2425 | ||
4c4b4cd2 | 2426 | if (arr_type == NULL || !ada_is_simple_array_type (arr_type)) |
14f9c5c9 AS |
2427 | { |
2428 | if (typep != NULL) | |
4c4b4cd2 | 2429 | *typep = builtin_type_int; |
d2e4a39e | 2430 | return (LONGEST) - which; |
14f9c5c9 AS |
2431 | } |
2432 | ||
2433 | if (TYPE_CODE (arr_type) == TYPE_CODE_PTR) | |
2434 | type = TYPE_TARGET_TYPE (arr_type); | |
2435 | else | |
2436 | type = arr_type; | |
2437 | ||
2438 | index_type_desc = ada_find_parallel_type (type, "___XA"); | |
d2e4a39e | 2439 | if (index_type_desc == NULL) |
14f9c5c9 | 2440 | { |
d2e4a39e AS |
2441 | struct type *range_type; |
2442 | struct type *index_type; | |
14f9c5c9 | 2443 | |
d2e4a39e | 2444 | while (n > 1) |
4c4b4cd2 PH |
2445 | { |
2446 | type = TYPE_TARGET_TYPE (type); | |
2447 | n -= 1; | |
2448 | } | |
14f9c5c9 AS |
2449 | |
2450 | range_type = TYPE_INDEX_TYPE (type); | |
2451 | index_type = TYPE_TARGET_TYPE (range_type); | |
2452 | if (TYPE_CODE (index_type) == TYPE_CODE_UNDEF) | |
4c4b4cd2 | 2453 | index_type = builtin_type_long; |
14f9c5c9 | 2454 | if (typep != NULL) |
4c4b4cd2 | 2455 | *typep = index_type; |
d2e4a39e | 2456 | return |
4c4b4cd2 PH |
2457 | (LONGEST) (which == 0 |
2458 | ? TYPE_LOW_BOUND (range_type) | |
2459 | : TYPE_HIGH_BOUND (range_type)); | |
14f9c5c9 | 2460 | } |
d2e4a39e | 2461 | else |
14f9c5c9 | 2462 | { |
d2e4a39e | 2463 | struct type *index_type = |
4c4b4cd2 PH |
2464 | to_fixed_range_type (TYPE_FIELD_NAME (index_type_desc, n - 1), |
2465 | NULL, TYPE_OBJFILE (arr_type)); | |
14f9c5c9 | 2466 | if (typep != NULL) |
4c4b4cd2 | 2467 | *typep = TYPE_TARGET_TYPE (index_type); |
d2e4a39e | 2468 | return |
4c4b4cd2 PH |
2469 | (LONGEST) (which == 0 |
2470 | ? TYPE_LOW_BOUND (index_type) | |
2471 | : TYPE_HIGH_BOUND (index_type)); | |
14f9c5c9 AS |
2472 | } |
2473 | } | |
2474 | ||
2475 | /* Given that arr is an array value, returns the lower bound of the | |
2476 | nth index (numbering from 1) if which is 0, and the upper bound if | |
4c4b4cd2 PH |
2477 | which is 1. This routine will also work for arrays with bounds |
2478 | supplied by run-time quantities other than discriminants. */ | |
14f9c5c9 | 2479 | |
d2e4a39e | 2480 | struct value * |
4dc81987 | 2481 | ada_array_bound (struct value *arr, int n, int which) |
14f9c5c9 | 2482 | { |
df407dfe | 2483 | struct type *arr_type = value_type (arr); |
14f9c5c9 AS |
2484 | |
2485 | if (ada_is_packed_array_type (arr_type)) | |
2486 | return ada_array_bound (decode_packed_array (arr), n, which); | |
4c4b4cd2 | 2487 | else if (ada_is_simple_array_type (arr_type)) |
14f9c5c9 | 2488 | { |
d2e4a39e | 2489 | struct type *type; |
14f9c5c9 AS |
2490 | LONGEST v = ada_array_bound_from_type (arr_type, n, which, &type); |
2491 | return value_from_longest (type, v); | |
2492 | } | |
2493 | else | |
2494 | return desc_one_bound (desc_bounds (arr), n, which); | |
2495 | } | |
2496 | ||
2497 | /* Given that arr is an array value, returns the length of the | |
2498 | nth index. This routine will also work for arrays with bounds | |
4c4b4cd2 PH |
2499 | supplied by run-time quantities other than discriminants. |
2500 | Does not work for arrays indexed by enumeration types with representation | |
2501 | clauses at the moment. */ | |
14f9c5c9 | 2502 | |
d2e4a39e AS |
2503 | struct value * |
2504 | ada_array_length (struct value *arr, int n) | |
14f9c5c9 | 2505 | { |
df407dfe | 2506 | struct type *arr_type = ada_check_typedef (value_type (arr)); |
14f9c5c9 AS |
2507 | |
2508 | if (ada_is_packed_array_type (arr_type)) | |
2509 | return ada_array_length (decode_packed_array (arr), n); | |
2510 | ||
4c4b4cd2 | 2511 | if (ada_is_simple_array_type (arr_type)) |
14f9c5c9 | 2512 | { |
d2e4a39e | 2513 | struct type *type; |
14f9c5c9 | 2514 | LONGEST v = |
4c4b4cd2 PH |
2515 | ada_array_bound_from_type (arr_type, n, 1, &type) - |
2516 | ada_array_bound_from_type (arr_type, n, 0, NULL) + 1; | |
14f9c5c9 AS |
2517 | return value_from_longest (type, v); |
2518 | } | |
2519 | else | |
d2e4a39e | 2520 | return |
72d5681a | 2521 | value_from_longest (builtin_type_int, |
4c4b4cd2 PH |
2522 | value_as_long (desc_one_bound (desc_bounds (arr), |
2523 | n, 1)) | |
2524 | - value_as_long (desc_one_bound (desc_bounds (arr), | |
2525 | n, 0)) + 1); | |
2526 | } | |
2527 | ||
2528 | /* An empty array whose type is that of ARR_TYPE (an array type), | |
2529 | with bounds LOW to LOW-1. */ | |
2530 | ||
2531 | static struct value * | |
2532 | empty_array (struct type *arr_type, int low) | |
2533 | { | |
6c038f32 | 2534 | struct type *index_type = |
0b5d8877 PH |
2535 | create_range_type (NULL, TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (arr_type)), |
2536 | low, low - 1); | |
2537 | struct type *elt_type = ada_array_element_type (arr_type, 1); | |
2538 | return allocate_value (create_array_type (NULL, elt_type, index_type)); | |
14f9c5c9 | 2539 | } |
14f9c5c9 | 2540 | \f |
d2e4a39e | 2541 | |
4c4b4cd2 | 2542 | /* Name resolution */ |
14f9c5c9 | 2543 | |
4c4b4cd2 PH |
2544 | /* The "decoded" name for the user-definable Ada operator corresponding |
2545 | to OP. */ | |
14f9c5c9 | 2546 | |
d2e4a39e | 2547 | static const char * |
4c4b4cd2 | 2548 | ada_decoded_op_name (enum exp_opcode op) |
14f9c5c9 AS |
2549 | { |
2550 | int i; | |
2551 | ||
4c4b4cd2 | 2552 | for (i = 0; ada_opname_table[i].encoded != NULL; i += 1) |
14f9c5c9 AS |
2553 | { |
2554 | if (ada_opname_table[i].op == op) | |
4c4b4cd2 | 2555 | return ada_opname_table[i].decoded; |
14f9c5c9 | 2556 | } |
323e0a4a | 2557 | error (_("Could not find operator name for opcode")); |
14f9c5c9 AS |
2558 | } |
2559 | ||
2560 | ||
4c4b4cd2 PH |
2561 | /* Same as evaluate_type (*EXP), but resolves ambiguous symbol |
2562 | references (marked by OP_VAR_VALUE nodes in which the symbol has an | |
2563 | undefined namespace) and converts operators that are | |
2564 | user-defined into appropriate function calls. If CONTEXT_TYPE is | |
14f9c5c9 AS |
2565 | non-null, it provides a preferred result type [at the moment, only |
2566 | type void has any effect---causing procedures to be preferred over | |
2567 | functions in calls]. A null CONTEXT_TYPE indicates that a non-void | |
4c4b4cd2 | 2568 | return type is preferred. May change (expand) *EXP. */ |
14f9c5c9 | 2569 | |
4c4b4cd2 PH |
2570 | static void |
2571 | resolve (struct expression **expp, int void_context_p) | |
14f9c5c9 AS |
2572 | { |
2573 | int pc; | |
2574 | pc = 0; | |
4c4b4cd2 | 2575 | resolve_subexp (expp, &pc, 1, void_context_p ? builtin_type_void : NULL); |
14f9c5c9 AS |
2576 | } |
2577 | ||
4c4b4cd2 PH |
2578 | /* Resolve the operator of the subexpression beginning at |
2579 | position *POS of *EXPP. "Resolving" consists of replacing | |
2580 | the symbols that have undefined namespaces in OP_VAR_VALUE nodes | |
2581 | with their resolutions, replacing built-in operators with | |
2582 | function calls to user-defined operators, where appropriate, and, | |
2583 | when DEPROCEDURE_P is non-zero, converting function-valued variables | |
2584 | into parameterless calls. May expand *EXPP. The CONTEXT_TYPE functions | |
2585 | are as in ada_resolve, above. */ | |
14f9c5c9 | 2586 | |
d2e4a39e | 2587 | static struct value * |
4c4b4cd2 | 2588 | resolve_subexp (struct expression **expp, int *pos, int deprocedure_p, |
76a01679 | 2589 | struct type *context_type) |
14f9c5c9 AS |
2590 | { |
2591 | int pc = *pos; | |
2592 | int i; | |
4c4b4cd2 | 2593 | struct expression *exp; /* Convenience: == *expp. */ |
14f9c5c9 | 2594 | enum exp_opcode op = (*expp)->elts[pc].opcode; |
4c4b4cd2 PH |
2595 | struct value **argvec; /* Vector of operand types (alloca'ed). */ |
2596 | int nargs; /* Number of operands. */ | |
52ce6436 | 2597 | int oplen; |
14f9c5c9 AS |
2598 | |
2599 | argvec = NULL; | |
2600 | nargs = 0; | |
2601 | exp = *expp; | |
2602 | ||
52ce6436 PH |
2603 | /* Pass one: resolve operands, saving their types and updating *pos, |
2604 | if needed. */ | |
14f9c5c9 AS |
2605 | switch (op) |
2606 | { | |
4c4b4cd2 PH |
2607 | case OP_FUNCALL: |
2608 | if (exp->elts[pc + 3].opcode == OP_VAR_VALUE | |
76a01679 JB |
2609 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
2610 | *pos += 7; | |
4c4b4cd2 PH |
2611 | else |
2612 | { | |
2613 | *pos += 3; | |
2614 | resolve_subexp (expp, pos, 0, NULL); | |
2615 | } | |
2616 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
14f9c5c9 AS |
2617 | break; |
2618 | ||
14f9c5c9 | 2619 | case UNOP_ADDR: |
4c4b4cd2 PH |
2620 | *pos += 1; |
2621 | resolve_subexp (expp, pos, 0, NULL); | |
2622 | break; | |
2623 | ||
52ce6436 PH |
2624 | case UNOP_QUAL: |
2625 | *pos += 3; | |
2626 | resolve_subexp (expp, pos, 1, exp->elts[pc + 1].type); | |
4c4b4cd2 PH |
2627 | break; |
2628 | ||
52ce6436 | 2629 | case OP_ATR_MODULUS: |
4c4b4cd2 PH |
2630 | case OP_ATR_SIZE: |
2631 | case OP_ATR_TAG: | |
4c4b4cd2 PH |
2632 | case OP_ATR_FIRST: |
2633 | case OP_ATR_LAST: | |
2634 | case OP_ATR_LENGTH: | |
2635 | case OP_ATR_POS: | |
2636 | case OP_ATR_VAL: | |
4c4b4cd2 PH |
2637 | case OP_ATR_MIN: |
2638 | case OP_ATR_MAX: | |
52ce6436 PH |
2639 | case TERNOP_IN_RANGE: |
2640 | case BINOP_IN_BOUNDS: | |
2641 | case UNOP_IN_RANGE: | |
2642 | case OP_AGGREGATE: | |
2643 | case OP_OTHERS: | |
2644 | case OP_CHOICES: | |
2645 | case OP_POSITIONAL: | |
2646 | case OP_DISCRETE_RANGE: | |
2647 | case OP_NAME: | |
2648 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
2649 | *pos += oplen; | |
14f9c5c9 AS |
2650 | break; |
2651 | ||
2652 | case BINOP_ASSIGN: | |
2653 | { | |
4c4b4cd2 PH |
2654 | struct value *arg1; |
2655 | ||
2656 | *pos += 1; | |
2657 | arg1 = resolve_subexp (expp, pos, 0, NULL); | |
2658 | if (arg1 == NULL) | |
2659 | resolve_subexp (expp, pos, 1, NULL); | |
2660 | else | |
df407dfe | 2661 | resolve_subexp (expp, pos, 1, value_type (arg1)); |
4c4b4cd2 | 2662 | break; |
14f9c5c9 AS |
2663 | } |
2664 | ||
4c4b4cd2 | 2665 | case UNOP_CAST: |
4c4b4cd2 PH |
2666 | *pos += 3; |
2667 | nargs = 1; | |
2668 | break; | |
14f9c5c9 | 2669 | |
4c4b4cd2 PH |
2670 | case BINOP_ADD: |
2671 | case BINOP_SUB: | |
2672 | case BINOP_MUL: | |
2673 | case BINOP_DIV: | |
2674 | case BINOP_REM: | |
2675 | case BINOP_MOD: | |
2676 | case BINOP_EXP: | |
2677 | case BINOP_CONCAT: | |
2678 | case BINOP_LOGICAL_AND: | |
2679 | case BINOP_LOGICAL_OR: | |
2680 | case BINOP_BITWISE_AND: | |
2681 | case BINOP_BITWISE_IOR: | |
2682 | case BINOP_BITWISE_XOR: | |
14f9c5c9 | 2683 | |
4c4b4cd2 PH |
2684 | case BINOP_EQUAL: |
2685 | case BINOP_NOTEQUAL: | |
2686 | case BINOP_LESS: | |
2687 | case BINOP_GTR: | |
2688 | case BINOP_LEQ: | |
2689 | case BINOP_GEQ: | |
14f9c5c9 | 2690 | |
4c4b4cd2 PH |
2691 | case BINOP_REPEAT: |
2692 | case BINOP_SUBSCRIPT: | |
2693 | case BINOP_COMMA: | |
14f9c5c9 | 2694 | |
4c4b4cd2 PH |
2695 | case UNOP_NEG: |
2696 | case UNOP_PLUS: | |
2697 | case UNOP_LOGICAL_NOT: | |
2698 | case UNOP_ABS: | |
2699 | case UNOP_IND: | |
2700 | *pos += 1; | |
2701 | nargs = 1; | |
2702 | break; | |
14f9c5c9 | 2703 | |
4c4b4cd2 PH |
2704 | case OP_LONG: |
2705 | case OP_DOUBLE: | |
2706 | case OP_VAR_VALUE: | |
2707 | *pos += 4; | |
2708 | break; | |
14f9c5c9 | 2709 | |
4c4b4cd2 PH |
2710 | case OP_TYPE: |
2711 | case OP_BOOL: | |
2712 | case OP_LAST: | |
4c4b4cd2 PH |
2713 | case OP_INTERNALVAR: |
2714 | *pos += 3; | |
2715 | break; | |
14f9c5c9 | 2716 | |
4c4b4cd2 PH |
2717 | case UNOP_MEMVAL: |
2718 | *pos += 3; | |
2719 | nargs = 1; | |
2720 | break; | |
2721 | ||
67f3407f DJ |
2722 | case OP_REGISTER: |
2723 | *pos += 4 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1); | |
2724 | break; | |
2725 | ||
4c4b4cd2 PH |
2726 | case STRUCTOP_STRUCT: |
2727 | *pos += 4 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1); | |
2728 | nargs = 1; | |
2729 | break; | |
2730 | ||
4c4b4cd2 | 2731 | case TERNOP_SLICE: |
4c4b4cd2 PH |
2732 | *pos += 1; |
2733 | nargs = 3; | |
2734 | break; | |
2735 | ||
52ce6436 | 2736 | case OP_STRING: |
14f9c5c9 | 2737 | break; |
4c4b4cd2 PH |
2738 | |
2739 | default: | |
323e0a4a | 2740 | error (_("Unexpected operator during name resolution")); |
14f9c5c9 AS |
2741 | } |
2742 | ||
76a01679 | 2743 | argvec = (struct value * *) alloca (sizeof (struct value *) * (nargs + 1)); |
4c4b4cd2 PH |
2744 | for (i = 0; i < nargs; i += 1) |
2745 | argvec[i] = resolve_subexp (expp, pos, 1, NULL); | |
2746 | argvec[i] = NULL; | |
2747 | exp = *expp; | |
2748 | ||
2749 | /* Pass two: perform any resolution on principal operator. */ | |
14f9c5c9 AS |
2750 | switch (op) |
2751 | { | |
2752 | default: | |
2753 | break; | |
2754 | ||
14f9c5c9 | 2755 | case OP_VAR_VALUE: |
4c4b4cd2 | 2756 | if (SYMBOL_DOMAIN (exp->elts[pc + 2].symbol) == UNDEF_DOMAIN) |
76a01679 JB |
2757 | { |
2758 | struct ada_symbol_info *candidates; | |
2759 | int n_candidates; | |
2760 | ||
2761 | n_candidates = | |
2762 | ada_lookup_symbol_list (SYMBOL_LINKAGE_NAME | |
2763 | (exp->elts[pc + 2].symbol), | |
2764 | exp->elts[pc + 1].block, VAR_DOMAIN, | |
2765 | &candidates); | |
2766 | ||
2767 | if (n_candidates > 1) | |
2768 | { | |
2769 | /* Types tend to get re-introduced locally, so if there | |
2770 | are any local symbols that are not types, first filter | |
2771 | out all types. */ | |
2772 | int j; | |
2773 | for (j = 0; j < n_candidates; j += 1) | |
2774 | switch (SYMBOL_CLASS (candidates[j].sym)) | |
2775 | { | |
2776 | case LOC_REGISTER: | |
2777 | case LOC_ARG: | |
2778 | case LOC_REF_ARG: | |
2779 | case LOC_REGPARM: | |
2780 | case LOC_REGPARM_ADDR: | |
2781 | case LOC_LOCAL: | |
2782 | case LOC_LOCAL_ARG: | |
2783 | case LOC_BASEREG: | |
2784 | case LOC_BASEREG_ARG: | |
2785 | case LOC_COMPUTED: | |
2786 | case LOC_COMPUTED_ARG: | |
2787 | goto FoundNonType; | |
2788 | default: | |
2789 | break; | |
2790 | } | |
2791 | FoundNonType: | |
2792 | if (j < n_candidates) | |
2793 | { | |
2794 | j = 0; | |
2795 | while (j < n_candidates) | |
2796 | { | |
2797 | if (SYMBOL_CLASS (candidates[j].sym) == LOC_TYPEDEF) | |
2798 | { | |
2799 | candidates[j] = candidates[n_candidates - 1]; | |
2800 | n_candidates -= 1; | |
2801 | } | |
2802 | else | |
2803 | j += 1; | |
2804 | } | |
2805 | } | |
2806 | } | |
2807 | ||
2808 | if (n_candidates == 0) | |
323e0a4a | 2809 | error (_("No definition found for %s"), |
76a01679 JB |
2810 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
2811 | else if (n_candidates == 1) | |
2812 | i = 0; | |
2813 | else if (deprocedure_p | |
2814 | && !is_nonfunction (candidates, n_candidates)) | |
2815 | { | |
06d5cf63 JB |
2816 | i = ada_resolve_function |
2817 | (candidates, n_candidates, NULL, 0, | |
2818 | SYMBOL_LINKAGE_NAME (exp->elts[pc + 2].symbol), | |
2819 | context_type); | |
76a01679 | 2820 | if (i < 0) |
323e0a4a | 2821 | error (_("Could not find a match for %s"), |
76a01679 JB |
2822 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
2823 | } | |
2824 | else | |
2825 | { | |
323e0a4a | 2826 | printf_filtered (_("Multiple matches for %s\n"), |
76a01679 JB |
2827 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
2828 | user_select_syms (candidates, n_candidates, 1); | |
2829 | i = 0; | |
2830 | } | |
2831 | ||
2832 | exp->elts[pc + 1].block = candidates[i].block; | |
2833 | exp->elts[pc + 2].symbol = candidates[i].sym; | |
1265e4aa JB |
2834 | if (innermost_block == NULL |
2835 | || contained_in (candidates[i].block, innermost_block)) | |
76a01679 JB |
2836 | innermost_block = candidates[i].block; |
2837 | } | |
2838 | ||
2839 | if (deprocedure_p | |
2840 | && (TYPE_CODE (SYMBOL_TYPE (exp->elts[pc + 2].symbol)) | |
2841 | == TYPE_CODE_FUNC)) | |
2842 | { | |
2843 | replace_operator_with_call (expp, pc, 0, 0, | |
2844 | exp->elts[pc + 2].symbol, | |
2845 | exp->elts[pc + 1].block); | |
2846 | exp = *expp; | |
2847 | } | |
14f9c5c9 AS |
2848 | break; |
2849 | ||
2850 | case OP_FUNCALL: | |
2851 | { | |
4c4b4cd2 | 2852 | if (exp->elts[pc + 3].opcode == OP_VAR_VALUE |
76a01679 | 2853 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
4c4b4cd2 PH |
2854 | { |
2855 | struct ada_symbol_info *candidates; | |
2856 | int n_candidates; | |
2857 | ||
2858 | n_candidates = | |
76a01679 JB |
2859 | ada_lookup_symbol_list (SYMBOL_LINKAGE_NAME |
2860 | (exp->elts[pc + 5].symbol), | |
2861 | exp->elts[pc + 4].block, VAR_DOMAIN, | |
2862 | &candidates); | |
4c4b4cd2 PH |
2863 | if (n_candidates == 1) |
2864 | i = 0; | |
2865 | else | |
2866 | { | |
06d5cf63 JB |
2867 | i = ada_resolve_function |
2868 | (candidates, n_candidates, | |
2869 | argvec, nargs, | |
2870 | SYMBOL_LINKAGE_NAME (exp->elts[pc + 5].symbol), | |
2871 | context_type); | |
4c4b4cd2 | 2872 | if (i < 0) |
323e0a4a | 2873 | error (_("Could not find a match for %s"), |
4c4b4cd2 PH |
2874 | SYMBOL_PRINT_NAME (exp->elts[pc + 5].symbol)); |
2875 | } | |
2876 | ||
2877 | exp->elts[pc + 4].block = candidates[i].block; | |
2878 | exp->elts[pc + 5].symbol = candidates[i].sym; | |
1265e4aa JB |
2879 | if (innermost_block == NULL |
2880 | || contained_in (candidates[i].block, innermost_block)) | |
4c4b4cd2 PH |
2881 | innermost_block = candidates[i].block; |
2882 | } | |
14f9c5c9 AS |
2883 | } |
2884 | break; | |
2885 | case BINOP_ADD: | |
2886 | case BINOP_SUB: | |
2887 | case BINOP_MUL: | |
2888 | case BINOP_DIV: | |
2889 | case BINOP_REM: | |
2890 | case BINOP_MOD: | |
2891 | case BINOP_CONCAT: | |
2892 | case BINOP_BITWISE_AND: | |
2893 | case BINOP_BITWISE_IOR: | |
2894 | case BINOP_BITWISE_XOR: | |
2895 | case BINOP_EQUAL: | |
2896 | case BINOP_NOTEQUAL: | |
2897 | case BINOP_LESS: | |
2898 | case BINOP_GTR: | |
2899 | case BINOP_LEQ: | |
2900 | case BINOP_GEQ: | |
2901 | case BINOP_EXP: | |
2902 | case UNOP_NEG: | |
2903 | case UNOP_PLUS: | |
2904 | case UNOP_LOGICAL_NOT: | |
2905 | case UNOP_ABS: | |
2906 | if (possible_user_operator_p (op, argvec)) | |
4c4b4cd2 PH |
2907 | { |
2908 | struct ada_symbol_info *candidates; | |
2909 | int n_candidates; | |
2910 | ||
2911 | n_candidates = | |
2912 | ada_lookup_symbol_list (ada_encode (ada_decoded_op_name (op)), | |
2913 | (struct block *) NULL, VAR_DOMAIN, | |
2914 | &candidates); | |
2915 | i = ada_resolve_function (candidates, n_candidates, argvec, nargs, | |
76a01679 | 2916 | ada_decoded_op_name (op), NULL); |
4c4b4cd2 PH |
2917 | if (i < 0) |
2918 | break; | |
2919 | ||
76a01679 JB |
2920 | replace_operator_with_call (expp, pc, nargs, 1, |
2921 | candidates[i].sym, candidates[i].block); | |
4c4b4cd2 PH |
2922 | exp = *expp; |
2923 | } | |
14f9c5c9 | 2924 | break; |
4c4b4cd2 PH |
2925 | |
2926 | case OP_TYPE: | |
2927 | return NULL; | |
14f9c5c9 AS |
2928 | } |
2929 | ||
2930 | *pos = pc; | |
2931 | return evaluate_subexp_type (exp, pos); | |
2932 | } | |
2933 | ||
2934 | /* Return non-zero if formal type FTYPE matches actual type ATYPE. If | |
4c4b4cd2 PH |
2935 | MAY_DEREF is non-zero, the formal may be a pointer and the actual |
2936 | a non-pointer. A type of 'void' (which is never a valid expression type) | |
2937 | by convention matches anything. */ | |
14f9c5c9 | 2938 | /* The term "match" here is rather loose. The match is heuristic and |
4c4b4cd2 | 2939 | liberal. FIXME: TOO liberal, in fact. */ |
14f9c5c9 AS |
2940 | |
2941 | static int | |
4dc81987 | 2942 | ada_type_match (struct type *ftype, struct type *atype, int may_deref) |
14f9c5c9 | 2943 | { |
61ee279c PH |
2944 | ftype = ada_check_typedef (ftype); |
2945 | atype = ada_check_typedef (atype); | |
14f9c5c9 AS |
2946 | |
2947 | if (TYPE_CODE (ftype) == TYPE_CODE_REF) | |
2948 | ftype = TYPE_TARGET_TYPE (ftype); | |
2949 | if (TYPE_CODE (atype) == TYPE_CODE_REF) | |
2950 | atype = TYPE_TARGET_TYPE (atype); | |
2951 | ||
d2e4a39e | 2952 | if (TYPE_CODE (ftype) == TYPE_CODE_VOID |
14f9c5c9 AS |
2953 | || TYPE_CODE (atype) == TYPE_CODE_VOID) |
2954 | return 1; | |
2955 | ||
d2e4a39e | 2956 | switch (TYPE_CODE (ftype)) |
14f9c5c9 AS |
2957 | { |
2958 | default: | |
2959 | return 1; | |
2960 | case TYPE_CODE_PTR: | |
2961 | if (TYPE_CODE (atype) == TYPE_CODE_PTR) | |
4c4b4cd2 PH |
2962 | return ada_type_match (TYPE_TARGET_TYPE (ftype), |
2963 | TYPE_TARGET_TYPE (atype), 0); | |
d2e4a39e | 2964 | else |
1265e4aa JB |
2965 | return (may_deref |
2966 | && ada_type_match (TYPE_TARGET_TYPE (ftype), atype, 0)); | |
14f9c5c9 AS |
2967 | case TYPE_CODE_INT: |
2968 | case TYPE_CODE_ENUM: | |
2969 | case TYPE_CODE_RANGE: | |
2970 | switch (TYPE_CODE (atype)) | |
4c4b4cd2 PH |
2971 | { |
2972 | case TYPE_CODE_INT: | |
2973 | case TYPE_CODE_ENUM: | |
2974 | case TYPE_CODE_RANGE: | |
2975 | return 1; | |
2976 | default: | |
2977 | return 0; | |
2978 | } | |
14f9c5c9 AS |
2979 | |
2980 | case TYPE_CODE_ARRAY: | |
d2e4a39e | 2981 | return (TYPE_CODE (atype) == TYPE_CODE_ARRAY |
4c4b4cd2 | 2982 | || ada_is_array_descriptor_type (atype)); |
14f9c5c9 AS |
2983 | |
2984 | case TYPE_CODE_STRUCT: | |
4c4b4cd2 PH |
2985 | if (ada_is_array_descriptor_type (ftype)) |
2986 | return (TYPE_CODE (atype) == TYPE_CODE_ARRAY | |
2987 | || ada_is_array_descriptor_type (atype)); | |
14f9c5c9 | 2988 | else |
4c4b4cd2 PH |
2989 | return (TYPE_CODE (atype) == TYPE_CODE_STRUCT |
2990 | && !ada_is_array_descriptor_type (atype)); | |
14f9c5c9 AS |
2991 | |
2992 | case TYPE_CODE_UNION: | |
2993 | case TYPE_CODE_FLT: | |
2994 | return (TYPE_CODE (atype) == TYPE_CODE (ftype)); | |
2995 | } | |
2996 | } | |
2997 | ||
2998 | /* Return non-zero if the formals of FUNC "sufficiently match" the | |
2999 | vector of actual argument types ACTUALS of size N_ACTUALS. FUNC | |
3000 | may also be an enumeral, in which case it is treated as a 0- | |
4c4b4cd2 | 3001 | argument function. */ |
14f9c5c9 AS |
3002 | |
3003 | static int | |
d2e4a39e | 3004 | ada_args_match (struct symbol *func, struct value **actuals, int n_actuals) |
14f9c5c9 AS |
3005 | { |
3006 | int i; | |
d2e4a39e | 3007 | struct type *func_type = SYMBOL_TYPE (func); |
14f9c5c9 | 3008 | |
1265e4aa JB |
3009 | if (SYMBOL_CLASS (func) == LOC_CONST |
3010 | && TYPE_CODE (func_type) == TYPE_CODE_ENUM) | |
14f9c5c9 AS |
3011 | return (n_actuals == 0); |
3012 | else if (func_type == NULL || TYPE_CODE (func_type) != TYPE_CODE_FUNC) | |
3013 | return 0; | |
3014 | ||
3015 | if (TYPE_NFIELDS (func_type) != n_actuals) | |
3016 | return 0; | |
3017 | ||
3018 | for (i = 0; i < n_actuals; i += 1) | |
3019 | { | |
4c4b4cd2 | 3020 | if (actuals[i] == NULL) |
76a01679 JB |
3021 | return 0; |
3022 | else | |
3023 | { | |
61ee279c | 3024 | struct type *ftype = ada_check_typedef (TYPE_FIELD_TYPE (func_type, i)); |
df407dfe | 3025 | struct type *atype = ada_check_typedef (value_type (actuals[i])); |
4c4b4cd2 | 3026 | |
76a01679 JB |
3027 | if (!ada_type_match (ftype, atype, 1)) |
3028 | return 0; | |
3029 | } | |
14f9c5c9 AS |
3030 | } |
3031 | return 1; | |
3032 | } | |
3033 | ||
3034 | /* False iff function type FUNC_TYPE definitely does not produce a value | |
3035 | compatible with type CONTEXT_TYPE. Conservatively returns 1 if | |
3036 | FUNC_TYPE is not a valid function type with a non-null return type | |
3037 | or an enumerated type. A null CONTEXT_TYPE indicates any non-void type. */ | |
3038 | ||
3039 | static int | |
d2e4a39e | 3040 | return_match (struct type *func_type, struct type *context_type) |
14f9c5c9 | 3041 | { |
d2e4a39e | 3042 | struct type *return_type; |
14f9c5c9 AS |
3043 | |
3044 | if (func_type == NULL) | |
3045 | return 1; | |
3046 | ||
4c4b4cd2 PH |
3047 | if (TYPE_CODE (func_type) == TYPE_CODE_FUNC) |
3048 | return_type = base_type (TYPE_TARGET_TYPE (func_type)); | |
3049 | else | |
3050 | return_type = base_type (func_type); | |
14f9c5c9 AS |
3051 | if (return_type == NULL) |
3052 | return 1; | |
3053 | ||
4c4b4cd2 | 3054 | context_type = base_type (context_type); |
14f9c5c9 AS |
3055 | |
3056 | if (TYPE_CODE (return_type) == TYPE_CODE_ENUM) | |
3057 | return context_type == NULL || return_type == context_type; | |
3058 | else if (context_type == NULL) | |
3059 | return TYPE_CODE (return_type) != TYPE_CODE_VOID; | |
3060 | else | |
3061 | return TYPE_CODE (return_type) == TYPE_CODE (context_type); | |
3062 | } | |
3063 | ||
3064 | ||
4c4b4cd2 | 3065 | /* Returns the index in SYMS[0..NSYMS-1] that contains the symbol for the |
14f9c5c9 | 3066 | function (if any) that matches the types of the NARGS arguments in |
4c4b4cd2 PH |
3067 | ARGS. If CONTEXT_TYPE is non-null and there is at least one match |
3068 | that returns that type, then eliminate matches that don't. If | |
3069 | CONTEXT_TYPE is void and there is at least one match that does not | |
3070 | return void, eliminate all matches that do. | |
3071 | ||
14f9c5c9 AS |
3072 | Asks the user if there is more than one match remaining. Returns -1 |
3073 | if there is no such symbol or none is selected. NAME is used | |
4c4b4cd2 PH |
3074 | solely for messages. May re-arrange and modify SYMS in |
3075 | the process; the index returned is for the modified vector. */ | |
14f9c5c9 | 3076 | |
4c4b4cd2 PH |
3077 | static int |
3078 | ada_resolve_function (struct ada_symbol_info syms[], | |
3079 | int nsyms, struct value **args, int nargs, | |
3080 | const char *name, struct type *context_type) | |
14f9c5c9 AS |
3081 | { |
3082 | int k; | |
4c4b4cd2 | 3083 | int m; /* Number of hits */ |
d2e4a39e AS |
3084 | struct type *fallback; |
3085 | struct type *return_type; | |
14f9c5c9 AS |
3086 | |
3087 | return_type = context_type; | |
3088 | if (context_type == NULL) | |
3089 | fallback = builtin_type_void; | |
3090 | else | |
3091 | fallback = NULL; | |
3092 | ||
d2e4a39e | 3093 | m = 0; |
14f9c5c9 AS |
3094 | while (1) |
3095 | { | |
3096 | for (k = 0; k < nsyms; k += 1) | |
4c4b4cd2 | 3097 | { |
61ee279c | 3098 | struct type *type = ada_check_typedef (SYMBOL_TYPE (syms[k].sym)); |
4c4b4cd2 PH |
3099 | |
3100 | if (ada_args_match (syms[k].sym, args, nargs) | |
3101 | && return_match (type, return_type)) | |
3102 | { | |
3103 | syms[m] = syms[k]; | |
3104 | m += 1; | |
3105 | } | |
3106 | } | |
14f9c5c9 | 3107 | if (m > 0 || return_type == fallback) |
4c4b4cd2 | 3108 | break; |
14f9c5c9 | 3109 | else |
4c4b4cd2 | 3110 | return_type = fallback; |
14f9c5c9 AS |
3111 | } |
3112 | ||
3113 | if (m == 0) | |
3114 | return -1; | |
3115 | else if (m > 1) | |
3116 | { | |
323e0a4a | 3117 | printf_filtered (_("Multiple matches for %s\n"), name); |
4c4b4cd2 | 3118 | user_select_syms (syms, m, 1); |
14f9c5c9 AS |
3119 | return 0; |
3120 | } | |
3121 | return 0; | |
3122 | } | |
3123 | ||
4c4b4cd2 PH |
3124 | /* Returns true (non-zero) iff decoded name N0 should appear before N1 |
3125 | in a listing of choices during disambiguation (see sort_choices, below). | |
3126 | The idea is that overloadings of a subprogram name from the | |
3127 | same package should sort in their source order. We settle for ordering | |
3128 | such symbols by their trailing number (__N or $N). */ | |
3129 | ||
14f9c5c9 | 3130 | static int |
4c4b4cd2 | 3131 | encoded_ordered_before (char *N0, char *N1) |
14f9c5c9 AS |
3132 | { |
3133 | if (N1 == NULL) | |
3134 | return 0; | |
3135 | else if (N0 == NULL) | |
3136 | return 1; | |
3137 | else | |
3138 | { | |
3139 | int k0, k1; | |
d2e4a39e | 3140 | for (k0 = strlen (N0) - 1; k0 > 0 && isdigit (N0[k0]); k0 -= 1) |
4c4b4cd2 | 3141 | ; |
d2e4a39e | 3142 | for (k1 = strlen (N1) - 1; k1 > 0 && isdigit (N1[k1]); k1 -= 1) |
4c4b4cd2 | 3143 | ; |
d2e4a39e | 3144 | if ((N0[k0] == '_' || N0[k0] == '$') && N0[k0 + 1] != '\000' |
4c4b4cd2 PH |
3145 | && (N1[k1] == '_' || N1[k1] == '$') && N1[k1 + 1] != '\000') |
3146 | { | |
3147 | int n0, n1; | |
3148 | n0 = k0; | |
3149 | while (N0[n0] == '_' && n0 > 0 && N0[n0 - 1] == '_') | |
3150 | n0 -= 1; | |
3151 | n1 = k1; | |
3152 | while (N1[n1] == '_' && n1 > 0 && N1[n1 - 1] == '_') | |
3153 | n1 -= 1; | |
3154 | if (n0 == n1 && strncmp (N0, N1, n0) == 0) | |
3155 | return (atoi (N0 + k0 + 1) < atoi (N1 + k1 + 1)); | |
3156 | } | |
14f9c5c9 AS |
3157 | return (strcmp (N0, N1) < 0); |
3158 | } | |
3159 | } | |
d2e4a39e | 3160 | |
4c4b4cd2 PH |
3161 | /* Sort SYMS[0..NSYMS-1] to put the choices in a canonical order by the |
3162 | encoded names. */ | |
3163 | ||
d2e4a39e | 3164 | static void |
4c4b4cd2 | 3165 | sort_choices (struct ada_symbol_info syms[], int nsyms) |
14f9c5c9 | 3166 | { |
4c4b4cd2 | 3167 | int i; |
d2e4a39e | 3168 | for (i = 1; i < nsyms; i += 1) |
14f9c5c9 | 3169 | { |
4c4b4cd2 | 3170 | struct ada_symbol_info sym = syms[i]; |
14f9c5c9 AS |
3171 | int j; |
3172 | ||
d2e4a39e | 3173 | for (j = i - 1; j >= 0; j -= 1) |
4c4b4cd2 PH |
3174 | { |
3175 | if (encoded_ordered_before (SYMBOL_LINKAGE_NAME (syms[j].sym), | |
3176 | SYMBOL_LINKAGE_NAME (sym.sym))) | |
3177 | break; | |
3178 | syms[j + 1] = syms[j]; | |
3179 | } | |
d2e4a39e | 3180 | syms[j + 1] = sym; |
14f9c5c9 AS |
3181 | } |
3182 | } | |
3183 | ||
4c4b4cd2 PH |
3184 | /* Given a list of NSYMS symbols in SYMS, select up to MAX_RESULTS>0 |
3185 | by asking the user (if necessary), returning the number selected, | |
3186 | and setting the first elements of SYMS items. Error if no symbols | |
3187 | selected. */ | |
14f9c5c9 AS |
3188 | |
3189 | /* NOTE: Adapted from decode_line_2 in symtab.c, with which it ought | |
4c4b4cd2 | 3190 | to be re-integrated one of these days. */ |
14f9c5c9 AS |
3191 | |
3192 | int | |
4c4b4cd2 | 3193 | user_select_syms (struct ada_symbol_info *syms, int nsyms, int max_results) |
14f9c5c9 AS |
3194 | { |
3195 | int i; | |
d2e4a39e | 3196 | int *chosen = (int *) alloca (sizeof (int) * nsyms); |
14f9c5c9 AS |
3197 | int n_chosen; |
3198 | int first_choice = (max_results == 1) ? 1 : 2; | |
3199 | ||
3200 | if (max_results < 1) | |
323e0a4a | 3201 | error (_("Request to select 0 symbols!")); |
14f9c5c9 AS |
3202 | if (nsyms <= 1) |
3203 | return nsyms; | |
3204 | ||
323e0a4a | 3205 | printf_unfiltered (_("[0] cancel\n")); |
14f9c5c9 | 3206 | if (max_results > 1) |
323e0a4a | 3207 | printf_unfiltered (_("[1] all\n")); |
14f9c5c9 | 3208 | |
4c4b4cd2 | 3209 | sort_choices (syms, nsyms); |
14f9c5c9 AS |
3210 | |
3211 | for (i = 0; i < nsyms; i += 1) | |
3212 | { | |
4c4b4cd2 PH |
3213 | if (syms[i].sym == NULL) |
3214 | continue; | |
3215 | ||
3216 | if (SYMBOL_CLASS (syms[i].sym) == LOC_BLOCK) | |
3217 | { | |
76a01679 JB |
3218 | struct symtab_and_line sal = |
3219 | find_function_start_sal (syms[i].sym, 1); | |
323e0a4a AC |
3220 | if (sal.symtab == NULL) |
3221 | printf_unfiltered (_("[%d] %s at <no source file available>:%d\n"), | |
3222 | i + first_choice, | |
3223 | SYMBOL_PRINT_NAME (syms[i].sym), | |
3224 | sal.line); | |
3225 | else | |
3226 | printf_unfiltered (_("[%d] %s at %s:%d\n"), i + first_choice, | |
3227 | SYMBOL_PRINT_NAME (syms[i].sym), | |
3228 | sal.symtab->filename, sal.line); | |
4c4b4cd2 PH |
3229 | continue; |
3230 | } | |
d2e4a39e | 3231 | else |
4c4b4cd2 PH |
3232 | { |
3233 | int is_enumeral = | |
3234 | (SYMBOL_CLASS (syms[i].sym) == LOC_CONST | |
3235 | && SYMBOL_TYPE (syms[i].sym) != NULL | |
3236 | && TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) == TYPE_CODE_ENUM); | |
3237 | struct symtab *symtab = symtab_for_sym (syms[i].sym); | |
3238 | ||
3239 | if (SYMBOL_LINE (syms[i].sym) != 0 && symtab != NULL) | |
323e0a4a | 3240 | printf_unfiltered (_("[%d] %s at %s:%d\n"), |
4c4b4cd2 PH |
3241 | i + first_choice, |
3242 | SYMBOL_PRINT_NAME (syms[i].sym), | |
3243 | symtab->filename, SYMBOL_LINE (syms[i].sym)); | |
76a01679 JB |
3244 | else if (is_enumeral |
3245 | && TYPE_NAME (SYMBOL_TYPE (syms[i].sym)) != NULL) | |
4c4b4cd2 | 3246 | { |
a3f17187 | 3247 | printf_unfiltered (("[%d] "), i + first_choice); |
76a01679 JB |
3248 | ada_print_type (SYMBOL_TYPE (syms[i].sym), NULL, |
3249 | gdb_stdout, -1, 0); | |
323e0a4a | 3250 | printf_unfiltered (_("'(%s) (enumeral)\n"), |
4c4b4cd2 PH |
3251 | SYMBOL_PRINT_NAME (syms[i].sym)); |
3252 | } | |
3253 | else if (symtab != NULL) | |
3254 | printf_unfiltered (is_enumeral | |
323e0a4a AC |
3255 | ? _("[%d] %s in %s (enumeral)\n") |
3256 | : _("[%d] %s at %s:?\n"), | |
4c4b4cd2 PH |
3257 | i + first_choice, |
3258 | SYMBOL_PRINT_NAME (syms[i].sym), | |
3259 | symtab->filename); | |
3260 | else | |
3261 | printf_unfiltered (is_enumeral | |
323e0a4a AC |
3262 | ? _("[%d] %s (enumeral)\n") |
3263 | : _("[%d] %s at ?\n"), | |
4c4b4cd2 PH |
3264 | i + first_choice, |
3265 | SYMBOL_PRINT_NAME (syms[i].sym)); | |
3266 | } | |
14f9c5c9 | 3267 | } |
d2e4a39e | 3268 | |
14f9c5c9 | 3269 | n_chosen = get_selections (chosen, nsyms, max_results, max_results > 1, |
4c4b4cd2 | 3270 | "overload-choice"); |
14f9c5c9 AS |
3271 | |
3272 | for (i = 0; i < n_chosen; i += 1) | |
4c4b4cd2 | 3273 | syms[i] = syms[chosen[i]]; |
14f9c5c9 AS |
3274 | |
3275 | return n_chosen; | |
3276 | } | |
3277 | ||
3278 | /* Read and validate a set of numeric choices from the user in the | |
4c4b4cd2 | 3279 | range 0 .. N_CHOICES-1. Place the results in increasing |
14f9c5c9 AS |
3280 | order in CHOICES[0 .. N-1], and return N. |
3281 | ||
3282 | The user types choices as a sequence of numbers on one line | |
3283 | separated by blanks, encoding them as follows: | |
3284 | ||
4c4b4cd2 | 3285 | + A choice of 0 means to cancel the selection, throwing an error. |
14f9c5c9 AS |
3286 | + If IS_ALL_CHOICE, a choice of 1 selects the entire set 0 .. N_CHOICES-1. |
3287 | + The user chooses k by typing k+IS_ALL_CHOICE+1. | |
3288 | ||
4c4b4cd2 | 3289 | The user is not allowed to choose more than MAX_RESULTS values. |
14f9c5c9 AS |
3290 | |
3291 | ANNOTATION_SUFFIX, if present, is used to annotate the input | |
4c4b4cd2 | 3292 | prompts (for use with the -f switch). */ |
14f9c5c9 AS |
3293 | |
3294 | int | |
d2e4a39e | 3295 | get_selections (int *choices, int n_choices, int max_results, |
4c4b4cd2 | 3296 | int is_all_choice, char *annotation_suffix) |
14f9c5c9 | 3297 | { |
d2e4a39e AS |
3298 | char *args; |
3299 | const char *prompt; | |
14f9c5c9 AS |
3300 | int n_chosen; |
3301 | int first_choice = is_all_choice ? 2 : 1; | |
d2e4a39e | 3302 | |
14f9c5c9 AS |
3303 | prompt = getenv ("PS2"); |
3304 | if (prompt == NULL) | |
3305 | prompt = ">"; | |
3306 | ||
a3f17187 | 3307 | printf_unfiltered (("%s "), prompt); |
14f9c5c9 AS |
3308 | gdb_flush (gdb_stdout); |
3309 | ||
3310 | args = command_line_input ((char *) NULL, 0, annotation_suffix); | |
d2e4a39e | 3311 | |
14f9c5c9 | 3312 | if (args == NULL) |
323e0a4a | 3313 | error_no_arg (_("one or more choice numbers")); |
14f9c5c9 AS |
3314 | |
3315 | n_chosen = 0; | |
76a01679 | 3316 | |
4c4b4cd2 PH |
3317 | /* Set choices[0 .. n_chosen-1] to the users' choices in ascending |
3318 | order, as given in args. Choices are validated. */ | |
14f9c5c9 AS |
3319 | while (1) |
3320 | { | |
d2e4a39e | 3321 | char *args2; |
14f9c5c9 AS |
3322 | int choice, j; |
3323 | ||
3324 | while (isspace (*args)) | |
4c4b4cd2 | 3325 | args += 1; |
14f9c5c9 | 3326 | if (*args == '\0' && n_chosen == 0) |
323e0a4a | 3327 | error_no_arg (_("one or more choice numbers")); |
14f9c5c9 | 3328 | else if (*args == '\0') |
4c4b4cd2 | 3329 | break; |
14f9c5c9 AS |
3330 | |
3331 | choice = strtol (args, &args2, 10); | |
d2e4a39e | 3332 | if (args == args2 || choice < 0 |
4c4b4cd2 | 3333 | || choice > n_choices + first_choice - 1) |
323e0a4a | 3334 | error (_("Argument must be choice number")); |
14f9c5c9 AS |
3335 | args = args2; |
3336 | ||
d2e4a39e | 3337 | if (choice == 0) |
323e0a4a | 3338 | error (_("cancelled")); |
14f9c5c9 AS |
3339 | |
3340 | if (choice < first_choice) | |
4c4b4cd2 PH |
3341 | { |
3342 | n_chosen = n_choices; | |
3343 | for (j = 0; j < n_choices; j += 1) | |
3344 | choices[j] = j; | |
3345 | break; | |
3346 | } | |
14f9c5c9 AS |
3347 | choice -= first_choice; |
3348 | ||
d2e4a39e | 3349 | for (j = n_chosen - 1; j >= 0 && choice < choices[j]; j -= 1) |
4c4b4cd2 PH |
3350 | { |
3351 | } | |
14f9c5c9 AS |
3352 | |
3353 | if (j < 0 || choice != choices[j]) | |
4c4b4cd2 PH |
3354 | { |
3355 | int k; | |
3356 | for (k = n_chosen - 1; k > j; k -= 1) | |
3357 | choices[k + 1] = choices[k]; | |
3358 | choices[j + 1] = choice; | |
3359 | n_chosen += 1; | |
3360 | } | |
14f9c5c9 AS |
3361 | } |
3362 | ||
3363 | if (n_chosen > max_results) | |
323e0a4a | 3364 | error (_("Select no more than %d of the above"), max_results); |
d2e4a39e | 3365 | |
14f9c5c9 AS |
3366 | return n_chosen; |
3367 | } | |
3368 | ||
4c4b4cd2 PH |
3369 | /* Replace the operator of length OPLEN at position PC in *EXPP with a call |
3370 | on the function identified by SYM and BLOCK, and taking NARGS | |
3371 | arguments. Update *EXPP as needed to hold more space. */ | |
14f9c5c9 AS |
3372 | |
3373 | static void | |
d2e4a39e | 3374 | replace_operator_with_call (struct expression **expp, int pc, int nargs, |
4c4b4cd2 PH |
3375 | int oplen, struct symbol *sym, |
3376 | struct block *block) | |
14f9c5c9 AS |
3377 | { |
3378 | /* A new expression, with 6 more elements (3 for funcall, 4 for function | |
4c4b4cd2 | 3379 | symbol, -oplen for operator being replaced). */ |
d2e4a39e | 3380 | struct expression *newexp = (struct expression *) |
14f9c5c9 | 3381 | xmalloc (sizeof (struct expression) |
4c4b4cd2 | 3382 | + EXP_ELEM_TO_BYTES ((*expp)->nelts + 7 - oplen)); |
d2e4a39e | 3383 | struct expression *exp = *expp; |
14f9c5c9 AS |
3384 | |
3385 | newexp->nelts = exp->nelts + 7 - oplen; | |
3386 | newexp->language_defn = exp->language_defn; | |
3387 | memcpy (newexp->elts, exp->elts, EXP_ELEM_TO_BYTES (pc)); | |
d2e4a39e | 3388 | memcpy (newexp->elts + pc + 7, exp->elts + pc + oplen, |
4c4b4cd2 | 3389 | EXP_ELEM_TO_BYTES (exp->nelts - pc - oplen)); |
14f9c5c9 AS |
3390 | |
3391 | newexp->elts[pc].opcode = newexp->elts[pc + 2].opcode = OP_FUNCALL; | |
3392 | newexp->elts[pc + 1].longconst = (LONGEST) nargs; | |
3393 | ||
3394 | newexp->elts[pc + 3].opcode = newexp->elts[pc + 6].opcode = OP_VAR_VALUE; | |
3395 | newexp->elts[pc + 4].block = block; | |
3396 | newexp->elts[pc + 5].symbol = sym; | |
3397 | ||
3398 | *expp = newexp; | |
aacb1f0a | 3399 | xfree (exp); |
d2e4a39e | 3400 | } |
14f9c5c9 AS |
3401 | |
3402 | /* Type-class predicates */ | |
3403 | ||
4c4b4cd2 PH |
3404 | /* True iff TYPE is numeric (i.e., an INT, RANGE (of numeric type), |
3405 | or FLOAT). */ | |
14f9c5c9 AS |
3406 | |
3407 | static int | |
d2e4a39e | 3408 | numeric_type_p (struct type *type) |
14f9c5c9 AS |
3409 | { |
3410 | if (type == NULL) | |
3411 | return 0; | |
d2e4a39e AS |
3412 | else |
3413 | { | |
3414 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3415 | { |
3416 | case TYPE_CODE_INT: | |
3417 | case TYPE_CODE_FLT: | |
3418 | return 1; | |
3419 | case TYPE_CODE_RANGE: | |
3420 | return (type == TYPE_TARGET_TYPE (type) | |
3421 | || numeric_type_p (TYPE_TARGET_TYPE (type))); | |
3422 | default: | |
3423 | return 0; | |
3424 | } | |
d2e4a39e | 3425 | } |
14f9c5c9 AS |
3426 | } |
3427 | ||
4c4b4cd2 | 3428 | /* True iff TYPE is integral (an INT or RANGE of INTs). */ |
14f9c5c9 AS |
3429 | |
3430 | static int | |
d2e4a39e | 3431 | integer_type_p (struct type *type) |
14f9c5c9 AS |
3432 | { |
3433 | if (type == NULL) | |
3434 | return 0; | |
d2e4a39e AS |
3435 | else |
3436 | { | |
3437 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3438 | { |
3439 | case TYPE_CODE_INT: | |
3440 | return 1; | |
3441 | case TYPE_CODE_RANGE: | |
3442 | return (type == TYPE_TARGET_TYPE (type) | |
3443 | || integer_type_p (TYPE_TARGET_TYPE (type))); | |
3444 | default: | |
3445 | return 0; | |
3446 | } | |
d2e4a39e | 3447 | } |
14f9c5c9 AS |
3448 | } |
3449 | ||
4c4b4cd2 | 3450 | /* True iff TYPE is scalar (INT, RANGE, FLOAT, ENUM). */ |
14f9c5c9 AS |
3451 | |
3452 | static int | |
d2e4a39e | 3453 | scalar_type_p (struct type *type) |
14f9c5c9 AS |
3454 | { |
3455 | if (type == NULL) | |
3456 | return 0; | |
d2e4a39e AS |
3457 | else |
3458 | { | |
3459 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3460 | { |
3461 | case TYPE_CODE_INT: | |
3462 | case TYPE_CODE_RANGE: | |
3463 | case TYPE_CODE_ENUM: | |
3464 | case TYPE_CODE_FLT: | |
3465 | return 1; | |
3466 | default: | |
3467 | return 0; | |
3468 | } | |
d2e4a39e | 3469 | } |
14f9c5c9 AS |
3470 | } |
3471 | ||
4c4b4cd2 | 3472 | /* True iff TYPE is discrete (INT, RANGE, ENUM). */ |
14f9c5c9 AS |
3473 | |
3474 | static int | |
d2e4a39e | 3475 | discrete_type_p (struct type *type) |
14f9c5c9 AS |
3476 | { |
3477 | if (type == NULL) | |
3478 | return 0; | |
d2e4a39e AS |
3479 | else |
3480 | { | |
3481 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3482 | { |
3483 | case TYPE_CODE_INT: | |
3484 | case TYPE_CODE_RANGE: | |
3485 | case TYPE_CODE_ENUM: | |
3486 | return 1; | |
3487 | default: | |
3488 | return 0; | |
3489 | } | |
d2e4a39e | 3490 | } |
14f9c5c9 AS |
3491 | } |
3492 | ||
4c4b4cd2 PH |
3493 | /* Returns non-zero if OP with operands in the vector ARGS could be |
3494 | a user-defined function. Errs on the side of pre-defined operators | |
3495 | (i.e., result 0). */ | |
14f9c5c9 AS |
3496 | |
3497 | static int | |
d2e4a39e | 3498 | possible_user_operator_p (enum exp_opcode op, struct value *args[]) |
14f9c5c9 | 3499 | { |
76a01679 | 3500 | struct type *type0 = |
df407dfe | 3501 | (args[0] == NULL) ? NULL : ada_check_typedef (value_type (args[0])); |
d2e4a39e | 3502 | struct type *type1 = |
df407dfe | 3503 | (args[1] == NULL) ? NULL : ada_check_typedef (value_type (args[1])); |
d2e4a39e | 3504 | |
4c4b4cd2 PH |
3505 | if (type0 == NULL) |
3506 | return 0; | |
3507 | ||
14f9c5c9 AS |
3508 | switch (op) |
3509 | { | |
3510 | default: | |
3511 | return 0; | |
3512 | ||
3513 | case BINOP_ADD: | |
3514 | case BINOP_SUB: | |
3515 | case BINOP_MUL: | |
3516 | case BINOP_DIV: | |
d2e4a39e | 3517 | return (!(numeric_type_p (type0) && numeric_type_p (type1))); |
14f9c5c9 AS |
3518 | |
3519 | case BINOP_REM: | |
3520 | case BINOP_MOD: | |
3521 | case BINOP_BITWISE_AND: | |
3522 | case BINOP_BITWISE_IOR: | |
3523 | case BINOP_BITWISE_XOR: | |
d2e4a39e | 3524 | return (!(integer_type_p (type0) && integer_type_p (type1))); |
14f9c5c9 AS |
3525 | |
3526 | case BINOP_EQUAL: | |
3527 | case BINOP_NOTEQUAL: | |
3528 | case BINOP_LESS: | |
3529 | case BINOP_GTR: | |
3530 | case BINOP_LEQ: | |
3531 | case BINOP_GEQ: | |
d2e4a39e | 3532 | return (!(scalar_type_p (type0) && scalar_type_p (type1))); |
14f9c5c9 AS |
3533 | |
3534 | case BINOP_CONCAT: | |
1265e4aa JB |
3535 | return |
3536 | ((TYPE_CODE (type0) != TYPE_CODE_ARRAY | |
3537 | && (TYPE_CODE (type0) != TYPE_CODE_PTR | |
3538 | || TYPE_CODE (TYPE_TARGET_TYPE (type0)) != TYPE_CODE_ARRAY)) | |
6d307763 | 3539 | || (type1 != NULL && TYPE_CODE (type1) != TYPE_CODE_ARRAY |
1265e4aa | 3540 | && (TYPE_CODE (type1) != TYPE_CODE_PTR |
c3e5cd34 PH |
3541 | || (TYPE_CODE (TYPE_TARGET_TYPE (type1)) |
3542 | != TYPE_CODE_ARRAY)))); | |
14f9c5c9 AS |
3543 | |
3544 | case BINOP_EXP: | |
d2e4a39e | 3545 | return (!(numeric_type_p (type0) && integer_type_p (type1))); |
14f9c5c9 AS |
3546 | |
3547 | case UNOP_NEG: | |
3548 | case UNOP_PLUS: | |
3549 | case UNOP_LOGICAL_NOT: | |
d2e4a39e AS |
3550 | case UNOP_ABS: |
3551 | return (!numeric_type_p (type0)); | |
14f9c5c9 AS |
3552 | |
3553 | } | |
3554 | } | |
3555 | \f | |
4c4b4cd2 | 3556 | /* Renaming */ |
14f9c5c9 | 3557 | |
4c4b4cd2 PH |
3558 | /* NOTE: In the following, we assume that a renaming type's name may |
3559 | have an ___XD suffix. It would be nice if this went away at some | |
3560 | point. */ | |
14f9c5c9 AS |
3561 | |
3562 | /* If TYPE encodes a renaming, returns the renaming suffix, which | |
4c4b4cd2 PH |
3563 | is XR for an object renaming, XRP for a procedure renaming, XRE for |
3564 | an exception renaming, and XRS for a subprogram renaming. Returns | |
3565 | NULL if NAME encodes none of these. */ | |
3566 | ||
d2e4a39e AS |
3567 | const char * |
3568 | ada_renaming_type (struct type *type) | |
14f9c5c9 AS |
3569 | { |
3570 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_ENUM) | |
3571 | { | |
d2e4a39e AS |
3572 | const char *name = type_name_no_tag (type); |
3573 | const char *suffix = (name == NULL) ? NULL : strstr (name, "___XR"); | |
3574 | if (suffix == NULL | |
4c4b4cd2 PH |
3575 | || (suffix[5] != '\000' && strchr ("PES_", suffix[5]) == NULL)) |
3576 | return NULL; | |
14f9c5c9 | 3577 | else |
4c4b4cd2 | 3578 | return suffix + 3; |
14f9c5c9 AS |
3579 | } |
3580 | else | |
3581 | return NULL; | |
3582 | } | |
3583 | ||
4c4b4cd2 PH |
3584 | /* Return non-zero iff SYM encodes an object renaming. */ |
3585 | ||
14f9c5c9 | 3586 | int |
d2e4a39e | 3587 | ada_is_object_renaming (struct symbol *sym) |
14f9c5c9 | 3588 | { |
d2e4a39e AS |
3589 | const char *renaming_type = ada_renaming_type (SYMBOL_TYPE (sym)); |
3590 | return renaming_type != NULL | |
14f9c5c9 AS |
3591 | && (renaming_type[2] == '\0' || renaming_type[2] == '_'); |
3592 | } | |
3593 | ||
3594 | /* Assuming that SYM encodes a non-object renaming, returns the original | |
4c4b4cd2 PH |
3595 | name of the renamed entity. The name is good until the end of |
3596 | parsing. */ | |
3597 | ||
3598 | char * | |
d2e4a39e | 3599 | ada_simple_renamed_entity (struct symbol *sym) |
14f9c5c9 | 3600 | { |
d2e4a39e AS |
3601 | struct type *type; |
3602 | const char *raw_name; | |
14f9c5c9 | 3603 | int len; |
d2e4a39e | 3604 | char *result; |
14f9c5c9 AS |
3605 | |
3606 | type = SYMBOL_TYPE (sym); | |
3607 | if (type == NULL || TYPE_NFIELDS (type) < 1) | |
323e0a4a | 3608 | error (_("Improperly encoded renaming.")); |
14f9c5c9 AS |
3609 | |
3610 | raw_name = TYPE_FIELD_NAME (type, 0); | |
3611 | len = (raw_name == NULL ? 0 : strlen (raw_name)) - 5; | |
3612 | if (len <= 0) | |
323e0a4a | 3613 | error (_("Improperly encoded renaming.")); |
14f9c5c9 AS |
3614 | |
3615 | result = xmalloc (len + 1); | |
14f9c5c9 AS |
3616 | strncpy (result, raw_name, len); |
3617 | result[len] = '\000'; | |
3618 | return result; | |
3619 | } | |
52ce6436 | 3620 | |
14f9c5c9 | 3621 | \f |
d2e4a39e | 3622 | |
4c4b4cd2 | 3623 | /* Evaluation: Function Calls */ |
14f9c5c9 | 3624 | |
4c4b4cd2 PH |
3625 | /* Return an lvalue containing the value VAL. This is the identity on |
3626 | lvalues, and otherwise has the side-effect of pushing a copy of VAL | |
3627 | on the stack, using and updating *SP as the stack pointer, and | |
3628 | returning an lvalue whose VALUE_ADDRESS points to the copy. */ | |
14f9c5c9 | 3629 | |
d2e4a39e | 3630 | static struct value * |
4c4b4cd2 | 3631 | ensure_lval (struct value *val, CORE_ADDR *sp) |
14f9c5c9 | 3632 | { |
c3e5cd34 PH |
3633 | if (! VALUE_LVAL (val)) |
3634 | { | |
df407dfe | 3635 | int len = TYPE_LENGTH (ada_check_typedef (value_type (val))); |
c3e5cd34 PH |
3636 | |
3637 | /* The following is taken from the structure-return code in | |
3638 | call_function_by_hand. FIXME: Therefore, some refactoring seems | |
3639 | indicated. */ | |
4d1e7dd1 | 3640 | if (gdbarch_inner_than (current_gdbarch, 1, 2)) |
c3e5cd34 PH |
3641 | { |
3642 | /* Stack grows downward. Align SP and VALUE_ADDRESS (val) after | |
3643 | reserving sufficient space. */ | |
3644 | *sp -= len; | |
3645 | if (gdbarch_frame_align_p (current_gdbarch)) | |
3646 | *sp = gdbarch_frame_align (current_gdbarch, *sp); | |
3647 | VALUE_ADDRESS (val) = *sp; | |
3648 | } | |
3649 | else | |
3650 | { | |
3651 | /* Stack grows upward. Align the frame, allocate space, and | |
3652 | then again, re-align the frame. */ | |
3653 | if (gdbarch_frame_align_p (current_gdbarch)) | |
3654 | *sp = gdbarch_frame_align (current_gdbarch, *sp); | |
3655 | VALUE_ADDRESS (val) = *sp; | |
3656 | *sp += len; | |
3657 | if (gdbarch_frame_align_p (current_gdbarch)) | |
3658 | *sp = gdbarch_frame_align (current_gdbarch, *sp); | |
3659 | } | |
14f9c5c9 | 3660 | |
990a07ab | 3661 | write_memory (VALUE_ADDRESS (val), value_contents_raw (val), len); |
c3e5cd34 | 3662 | } |
14f9c5c9 AS |
3663 | |
3664 | return val; | |
3665 | } | |
3666 | ||
3667 | /* Return the value ACTUAL, converted to be an appropriate value for a | |
3668 | formal of type FORMAL_TYPE. Use *SP as a stack pointer for | |
3669 | allocating any necessary descriptors (fat pointers), or copies of | |
4c4b4cd2 | 3670 | values not residing in memory, updating it as needed. */ |
14f9c5c9 | 3671 | |
d2e4a39e AS |
3672 | static struct value * |
3673 | convert_actual (struct value *actual, struct type *formal_type0, | |
4c4b4cd2 | 3674 | CORE_ADDR *sp) |
14f9c5c9 | 3675 | { |
df407dfe | 3676 | struct type *actual_type = ada_check_typedef (value_type (actual)); |
61ee279c | 3677 | struct type *formal_type = ada_check_typedef (formal_type0); |
d2e4a39e AS |
3678 | struct type *formal_target = |
3679 | TYPE_CODE (formal_type) == TYPE_CODE_PTR | |
61ee279c | 3680 | ? ada_check_typedef (TYPE_TARGET_TYPE (formal_type)) : formal_type; |
d2e4a39e AS |
3681 | struct type *actual_target = |
3682 | TYPE_CODE (actual_type) == TYPE_CODE_PTR | |
61ee279c | 3683 | ? ada_check_typedef (TYPE_TARGET_TYPE (actual_type)) : actual_type; |
14f9c5c9 | 3684 | |
4c4b4cd2 | 3685 | if (ada_is_array_descriptor_type (formal_target) |
14f9c5c9 AS |
3686 | && TYPE_CODE (actual_target) == TYPE_CODE_ARRAY) |
3687 | return make_array_descriptor (formal_type, actual, sp); | |
3688 | else if (TYPE_CODE (formal_type) == TYPE_CODE_PTR) | |
3689 | { | |
3690 | if (TYPE_CODE (formal_target) == TYPE_CODE_ARRAY | |
4c4b4cd2 PH |
3691 | && ada_is_array_descriptor_type (actual_target)) |
3692 | return desc_data (actual); | |
14f9c5c9 | 3693 | else if (TYPE_CODE (actual_type) != TYPE_CODE_PTR) |
4c4b4cd2 PH |
3694 | { |
3695 | if (VALUE_LVAL (actual) != lval_memory) | |
3696 | { | |
3697 | struct value *val; | |
df407dfe | 3698 | actual_type = ada_check_typedef (value_type (actual)); |
4c4b4cd2 | 3699 | val = allocate_value (actual_type); |
990a07ab | 3700 | memcpy ((char *) value_contents_raw (val), |
0fd88904 | 3701 | (char *) value_contents (actual), |
4c4b4cd2 PH |
3702 | TYPE_LENGTH (actual_type)); |
3703 | actual = ensure_lval (val, sp); | |
3704 | } | |
3705 | return value_addr (actual); | |
3706 | } | |
14f9c5c9 AS |
3707 | } |
3708 | else if (TYPE_CODE (actual_type) == TYPE_CODE_PTR) | |
3709 | return ada_value_ind (actual); | |
3710 | ||
3711 | return actual; | |
3712 | } | |
3713 | ||
3714 | ||
4c4b4cd2 PH |
3715 | /* Push a descriptor of type TYPE for array value ARR on the stack at |
3716 | *SP, updating *SP to reflect the new descriptor. Return either | |
14f9c5c9 | 3717 | an lvalue representing the new descriptor, or (if TYPE is a pointer- |
4c4b4cd2 PH |
3718 | to-descriptor type rather than a descriptor type), a struct value * |
3719 | representing a pointer to this descriptor. */ | |
14f9c5c9 | 3720 | |
d2e4a39e AS |
3721 | static struct value * |
3722 | make_array_descriptor (struct type *type, struct value *arr, CORE_ADDR *sp) | |
14f9c5c9 | 3723 | { |
d2e4a39e AS |
3724 | struct type *bounds_type = desc_bounds_type (type); |
3725 | struct type *desc_type = desc_base_type (type); | |
3726 | struct value *descriptor = allocate_value (desc_type); | |
3727 | struct value *bounds = allocate_value (bounds_type); | |
14f9c5c9 | 3728 | int i; |
d2e4a39e | 3729 | |
df407dfe | 3730 | for (i = ada_array_arity (ada_check_typedef (value_type (arr))); i > 0; i -= 1) |
14f9c5c9 | 3731 | { |
0fd88904 | 3732 | modify_general_field (value_contents_writeable (bounds), |
4c4b4cd2 PH |
3733 | value_as_long (ada_array_bound (arr, i, 0)), |
3734 | desc_bound_bitpos (bounds_type, i, 0), | |
3735 | desc_bound_bitsize (bounds_type, i, 0)); | |
0fd88904 | 3736 | modify_general_field (value_contents_writeable (bounds), |
4c4b4cd2 PH |
3737 | value_as_long (ada_array_bound (arr, i, 1)), |
3738 | desc_bound_bitpos (bounds_type, i, 1), | |
3739 | desc_bound_bitsize (bounds_type, i, 1)); | |
14f9c5c9 | 3740 | } |
d2e4a39e | 3741 | |
4c4b4cd2 | 3742 | bounds = ensure_lval (bounds, sp); |
d2e4a39e | 3743 | |
0fd88904 | 3744 | modify_general_field (value_contents_writeable (descriptor), |
76a01679 JB |
3745 | VALUE_ADDRESS (ensure_lval (arr, sp)), |
3746 | fat_pntr_data_bitpos (desc_type), | |
3747 | fat_pntr_data_bitsize (desc_type)); | |
4c4b4cd2 | 3748 | |
0fd88904 | 3749 | modify_general_field (value_contents_writeable (descriptor), |
4c4b4cd2 PH |
3750 | VALUE_ADDRESS (bounds), |
3751 | fat_pntr_bounds_bitpos (desc_type), | |
3752 | fat_pntr_bounds_bitsize (desc_type)); | |
14f9c5c9 | 3753 | |
4c4b4cd2 | 3754 | descriptor = ensure_lval (descriptor, sp); |
14f9c5c9 AS |
3755 | |
3756 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
3757 | return value_addr (descriptor); | |
3758 | else | |
3759 | return descriptor; | |
3760 | } | |
3761 | ||
3762 | ||
4c4b4cd2 | 3763 | /* Assuming a dummy frame has been established on the target, perform any |
14f9c5c9 | 3764 | conversions needed for calling function FUNC on the NARGS actual |
4c4b4cd2 | 3765 | parameters in ARGS, other than standard C conversions. Does |
14f9c5c9 | 3766 | nothing if FUNC does not have Ada-style prototype data, or if NARGS |
4c4b4cd2 | 3767 | does not match the number of arguments expected. Use *SP as a |
14f9c5c9 | 3768 | stack pointer for additional data that must be pushed, updating its |
4c4b4cd2 | 3769 | value as needed. */ |
14f9c5c9 AS |
3770 | |
3771 | void | |
d2e4a39e | 3772 | ada_convert_actuals (struct value *func, int nargs, struct value *args[], |
4c4b4cd2 | 3773 | CORE_ADDR *sp) |
14f9c5c9 AS |
3774 | { |
3775 | int i; | |
3776 | ||
df407dfe AC |
3777 | if (TYPE_NFIELDS (value_type (func)) == 0 |
3778 | || nargs != TYPE_NFIELDS (value_type (func))) | |
14f9c5c9 AS |
3779 | return; |
3780 | ||
3781 | for (i = 0; i < nargs; i += 1) | |
d2e4a39e | 3782 | args[i] = |
df407dfe | 3783 | convert_actual (args[i], TYPE_FIELD_TYPE (value_type (func), i), sp); |
14f9c5c9 | 3784 | } |
14f9c5c9 | 3785 | \f |
963a6417 PH |
3786 | /* Dummy definitions for an experimental caching module that is not |
3787 | * used in the public sources. */ | |
96d887e8 | 3788 | |
96d887e8 PH |
3789 | static int |
3790 | lookup_cached_symbol (const char *name, domain_enum namespace, | |
76a01679 JB |
3791 | struct symbol **sym, struct block **block, |
3792 | struct symtab **symtab) | |
96d887e8 PH |
3793 | { |
3794 | return 0; | |
3795 | } | |
3796 | ||
3797 | static void | |
3798 | cache_symbol (const char *name, domain_enum namespace, struct symbol *sym, | |
76a01679 | 3799 | struct block *block, struct symtab *symtab) |
96d887e8 PH |
3800 | { |
3801 | } | |
4c4b4cd2 PH |
3802 | \f |
3803 | /* Symbol Lookup */ | |
3804 | ||
3805 | /* Return the result of a standard (literal, C-like) lookup of NAME in | |
3806 | given DOMAIN, visible from lexical block BLOCK. */ | |
3807 | ||
3808 | static struct symbol * | |
3809 | standard_lookup (const char *name, const struct block *block, | |
3810 | domain_enum domain) | |
3811 | { | |
3812 | struct symbol *sym; | |
3813 | struct symtab *symtab; | |
3814 | ||
3815 | if (lookup_cached_symbol (name, domain, &sym, NULL, NULL)) | |
3816 | return sym; | |
76a01679 JB |
3817 | sym = |
3818 | lookup_symbol_in_language (name, block, domain, language_c, 0, &symtab); | |
4c4b4cd2 PH |
3819 | cache_symbol (name, domain, sym, block_found, symtab); |
3820 | return sym; | |
3821 | } | |
3822 | ||
3823 | ||
3824 | /* Non-zero iff there is at least one non-function/non-enumeral symbol | |
3825 | in the symbol fields of SYMS[0..N-1]. We treat enumerals as functions, | |
3826 | since they contend in overloading in the same way. */ | |
3827 | static int | |
3828 | is_nonfunction (struct ada_symbol_info syms[], int n) | |
3829 | { | |
3830 | int i; | |
3831 | ||
3832 | for (i = 0; i < n; i += 1) | |
3833 | if (TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) != TYPE_CODE_FUNC | |
3834 | && (TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) != TYPE_CODE_ENUM | |
3835 | || SYMBOL_CLASS (syms[i].sym) != LOC_CONST)) | |
14f9c5c9 AS |
3836 | return 1; |
3837 | ||
3838 | return 0; | |
3839 | } | |
3840 | ||
3841 | /* If true (non-zero), then TYPE0 and TYPE1 represent equivalent | |
4c4b4cd2 | 3842 | struct types. Otherwise, they may not. */ |
14f9c5c9 AS |
3843 | |
3844 | static int | |
d2e4a39e | 3845 | equiv_types (struct type *type0, struct type *type1) |
14f9c5c9 | 3846 | { |
d2e4a39e | 3847 | if (type0 == type1) |
14f9c5c9 | 3848 | return 1; |
d2e4a39e | 3849 | if (type0 == NULL || type1 == NULL |
14f9c5c9 AS |
3850 | || TYPE_CODE (type0) != TYPE_CODE (type1)) |
3851 | return 0; | |
d2e4a39e | 3852 | if ((TYPE_CODE (type0) == TYPE_CODE_STRUCT |
14f9c5c9 AS |
3853 | || TYPE_CODE (type0) == TYPE_CODE_ENUM) |
3854 | && ada_type_name (type0) != NULL && ada_type_name (type1) != NULL | |
4c4b4cd2 | 3855 | && strcmp (ada_type_name (type0), ada_type_name (type1)) == 0) |
14f9c5c9 | 3856 | return 1; |
d2e4a39e | 3857 | |
14f9c5c9 AS |
3858 | return 0; |
3859 | } | |
3860 | ||
3861 | /* True iff SYM0 represents the same entity as SYM1, or one that is | |
4c4b4cd2 | 3862 | no more defined than that of SYM1. */ |
14f9c5c9 AS |
3863 | |
3864 | static int | |
d2e4a39e | 3865 | lesseq_defined_than (struct symbol *sym0, struct symbol *sym1) |
14f9c5c9 AS |
3866 | { |
3867 | if (sym0 == sym1) | |
3868 | return 1; | |
176620f1 | 3869 | if (SYMBOL_DOMAIN (sym0) != SYMBOL_DOMAIN (sym1) |
14f9c5c9 AS |
3870 | || SYMBOL_CLASS (sym0) != SYMBOL_CLASS (sym1)) |
3871 | return 0; | |
3872 | ||
d2e4a39e | 3873 | switch (SYMBOL_CLASS (sym0)) |
14f9c5c9 AS |
3874 | { |
3875 | case LOC_UNDEF: | |
3876 | return 1; | |
3877 | case LOC_TYPEDEF: | |
3878 | { | |
4c4b4cd2 PH |
3879 | struct type *type0 = SYMBOL_TYPE (sym0); |
3880 | struct type *type1 = SYMBOL_TYPE (sym1); | |
3881 | char *name0 = SYMBOL_LINKAGE_NAME (sym0); | |
3882 | char *name1 = SYMBOL_LINKAGE_NAME (sym1); | |
3883 | int len0 = strlen (name0); | |
3884 | return | |
3885 | TYPE_CODE (type0) == TYPE_CODE (type1) | |
3886 | && (equiv_types (type0, type1) | |
3887 | || (len0 < strlen (name1) && strncmp (name0, name1, len0) == 0 | |
3888 | && strncmp (name1 + len0, "___XV", 5) == 0)); | |
14f9c5c9 AS |
3889 | } |
3890 | case LOC_CONST: | |
3891 | return SYMBOL_VALUE (sym0) == SYMBOL_VALUE (sym1) | |
4c4b4cd2 | 3892 | && equiv_types (SYMBOL_TYPE (sym0), SYMBOL_TYPE (sym1)); |
d2e4a39e AS |
3893 | default: |
3894 | return 0; | |
14f9c5c9 AS |
3895 | } |
3896 | } | |
3897 | ||
4c4b4cd2 PH |
3898 | /* Append (SYM,BLOCK,SYMTAB) to the end of the array of struct ada_symbol_info |
3899 | records in OBSTACKP. Do nothing if SYM is a duplicate. */ | |
14f9c5c9 AS |
3900 | |
3901 | static void | |
76a01679 JB |
3902 | add_defn_to_vec (struct obstack *obstackp, |
3903 | struct symbol *sym, | |
3904 | struct block *block, struct symtab *symtab) | |
14f9c5c9 AS |
3905 | { |
3906 | int i; | |
3907 | size_t tmp; | |
4c4b4cd2 | 3908 | struct ada_symbol_info *prevDefns = defns_collected (obstackp, 0); |
14f9c5c9 | 3909 | |
529cad9c PH |
3910 | /* Do not try to complete stub types, as the debugger is probably |
3911 | already scanning all symbols matching a certain name at the | |
3912 | time when this function is called. Trying to replace the stub | |
3913 | type by its associated full type will cause us to restart a scan | |
3914 | which may lead to an infinite recursion. Instead, the client | |
3915 | collecting the matching symbols will end up collecting several | |
3916 | matches, with at least one of them complete. It can then filter | |
3917 | out the stub ones if needed. */ | |
3918 | ||
4c4b4cd2 PH |
3919 | for (i = num_defns_collected (obstackp) - 1; i >= 0; i -= 1) |
3920 | { | |
3921 | if (lesseq_defined_than (sym, prevDefns[i].sym)) | |
3922 | return; | |
3923 | else if (lesseq_defined_than (prevDefns[i].sym, sym)) | |
3924 | { | |
3925 | prevDefns[i].sym = sym; | |
3926 | prevDefns[i].block = block; | |
76a01679 | 3927 | prevDefns[i].symtab = symtab; |
4c4b4cd2 | 3928 | return; |
76a01679 | 3929 | } |
4c4b4cd2 PH |
3930 | } |
3931 | ||
3932 | { | |
3933 | struct ada_symbol_info info; | |
3934 | ||
3935 | info.sym = sym; | |
3936 | info.block = block; | |
3937 | info.symtab = symtab; | |
3938 | obstack_grow (obstackp, &info, sizeof (struct ada_symbol_info)); | |
3939 | } | |
3940 | } | |
3941 | ||
3942 | /* Number of ada_symbol_info structures currently collected in | |
3943 | current vector in *OBSTACKP. */ | |
3944 | ||
76a01679 JB |
3945 | static int |
3946 | num_defns_collected (struct obstack *obstackp) | |
4c4b4cd2 PH |
3947 | { |
3948 | return obstack_object_size (obstackp) / sizeof (struct ada_symbol_info); | |
3949 | } | |
3950 | ||
3951 | /* Vector of ada_symbol_info structures currently collected in current | |
3952 | vector in *OBSTACKP. If FINISH, close off the vector and return | |
3953 | its final address. */ | |
3954 | ||
76a01679 | 3955 | static struct ada_symbol_info * |
4c4b4cd2 PH |
3956 | defns_collected (struct obstack *obstackp, int finish) |
3957 | { | |
3958 | if (finish) | |
3959 | return obstack_finish (obstackp); | |
3960 | else | |
3961 | return (struct ada_symbol_info *) obstack_base (obstackp); | |
3962 | } | |
3963 | ||
96d887e8 PH |
3964 | /* Look, in partial_symtab PST, for symbol NAME in given namespace. |
3965 | Check the global symbols if GLOBAL, the static symbols if not. | |
3966 | Do wild-card match if WILD. */ | |
4c4b4cd2 | 3967 | |
96d887e8 PH |
3968 | static struct partial_symbol * |
3969 | ada_lookup_partial_symbol (struct partial_symtab *pst, const char *name, | |
3970 | int global, domain_enum namespace, int wild) | |
4c4b4cd2 | 3971 | { |
96d887e8 PH |
3972 | struct partial_symbol **start; |
3973 | int name_len = strlen (name); | |
3974 | int length = (global ? pst->n_global_syms : pst->n_static_syms); | |
3975 | int i; | |
4c4b4cd2 | 3976 | |
96d887e8 | 3977 | if (length == 0) |
4c4b4cd2 | 3978 | { |
96d887e8 | 3979 | return (NULL); |
4c4b4cd2 PH |
3980 | } |
3981 | ||
96d887e8 PH |
3982 | start = (global ? |
3983 | pst->objfile->global_psymbols.list + pst->globals_offset : | |
3984 | pst->objfile->static_psymbols.list + pst->statics_offset); | |
4c4b4cd2 | 3985 | |
96d887e8 | 3986 | if (wild) |
4c4b4cd2 | 3987 | { |
96d887e8 PH |
3988 | for (i = 0; i < length; i += 1) |
3989 | { | |
3990 | struct partial_symbol *psym = start[i]; | |
4c4b4cd2 | 3991 | |
1265e4aa JB |
3992 | if (SYMBOL_DOMAIN (psym) == namespace |
3993 | && wild_match (name, name_len, SYMBOL_LINKAGE_NAME (psym))) | |
96d887e8 PH |
3994 | return psym; |
3995 | } | |
3996 | return NULL; | |
4c4b4cd2 | 3997 | } |
96d887e8 PH |
3998 | else |
3999 | { | |
4000 | if (global) | |
4001 | { | |
4002 | int U; | |
4003 | i = 0; | |
4004 | U = length - 1; | |
4005 | while (U - i > 4) | |
4006 | { | |
4007 | int M = (U + i) >> 1; | |
4008 | struct partial_symbol *psym = start[M]; | |
4009 | if (SYMBOL_LINKAGE_NAME (psym)[0] < name[0]) | |
4010 | i = M + 1; | |
4011 | else if (SYMBOL_LINKAGE_NAME (psym)[0] > name[0]) | |
4012 | U = M - 1; | |
4013 | else if (strcmp (SYMBOL_LINKAGE_NAME (psym), name) < 0) | |
4014 | i = M + 1; | |
4015 | else | |
4016 | U = M; | |
4017 | } | |
4018 | } | |
4019 | else | |
4020 | i = 0; | |
4c4b4cd2 | 4021 | |
96d887e8 PH |
4022 | while (i < length) |
4023 | { | |
4024 | struct partial_symbol *psym = start[i]; | |
4c4b4cd2 | 4025 | |
96d887e8 PH |
4026 | if (SYMBOL_DOMAIN (psym) == namespace) |
4027 | { | |
4028 | int cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym), name_len); | |
4c4b4cd2 | 4029 | |
96d887e8 PH |
4030 | if (cmp < 0) |
4031 | { | |
4032 | if (global) | |
4033 | break; | |
4034 | } | |
4035 | else if (cmp == 0 | |
4036 | && is_name_suffix (SYMBOL_LINKAGE_NAME (psym) | |
76a01679 | 4037 | + name_len)) |
96d887e8 PH |
4038 | return psym; |
4039 | } | |
4040 | i += 1; | |
4041 | } | |
4c4b4cd2 | 4042 | |
96d887e8 PH |
4043 | if (global) |
4044 | { | |
4045 | int U; | |
4046 | i = 0; | |
4047 | U = length - 1; | |
4048 | while (U - i > 4) | |
4049 | { | |
4050 | int M = (U + i) >> 1; | |
4051 | struct partial_symbol *psym = start[M]; | |
4052 | if (SYMBOL_LINKAGE_NAME (psym)[0] < '_') | |
4053 | i = M + 1; | |
4054 | else if (SYMBOL_LINKAGE_NAME (psym)[0] > '_') | |
4055 | U = M - 1; | |
4056 | else if (strcmp (SYMBOL_LINKAGE_NAME (psym), "_ada_") < 0) | |
4057 | i = M + 1; | |
4058 | else | |
4059 | U = M; | |
4060 | } | |
4061 | } | |
4062 | else | |
4063 | i = 0; | |
4c4b4cd2 | 4064 | |
96d887e8 PH |
4065 | while (i < length) |
4066 | { | |
4067 | struct partial_symbol *psym = start[i]; | |
4c4b4cd2 | 4068 | |
96d887e8 PH |
4069 | if (SYMBOL_DOMAIN (psym) == namespace) |
4070 | { | |
4071 | int cmp; | |
4c4b4cd2 | 4072 | |
96d887e8 PH |
4073 | cmp = (int) '_' - (int) SYMBOL_LINKAGE_NAME (psym)[0]; |
4074 | if (cmp == 0) | |
4075 | { | |
4076 | cmp = strncmp ("_ada_", SYMBOL_LINKAGE_NAME (psym), 5); | |
4077 | if (cmp == 0) | |
4078 | cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym) + 5, | |
76a01679 | 4079 | name_len); |
96d887e8 | 4080 | } |
4c4b4cd2 | 4081 | |
96d887e8 PH |
4082 | if (cmp < 0) |
4083 | { | |
4084 | if (global) | |
4085 | break; | |
4086 | } | |
4087 | else if (cmp == 0 | |
4088 | && is_name_suffix (SYMBOL_LINKAGE_NAME (psym) | |
76a01679 | 4089 | + name_len + 5)) |
96d887e8 PH |
4090 | return psym; |
4091 | } | |
4092 | i += 1; | |
4093 | } | |
4094 | } | |
4095 | return NULL; | |
4c4b4cd2 PH |
4096 | } |
4097 | ||
96d887e8 | 4098 | /* Find a symbol table containing symbol SYM or NULL if none. */ |
4c4b4cd2 | 4099 | |
96d887e8 PH |
4100 | static struct symtab * |
4101 | symtab_for_sym (struct symbol *sym) | |
4c4b4cd2 | 4102 | { |
96d887e8 PH |
4103 | struct symtab *s; |
4104 | struct objfile *objfile; | |
4105 | struct block *b; | |
4106 | struct symbol *tmp_sym; | |
4107 | struct dict_iterator iter; | |
4108 | int j; | |
4c4b4cd2 | 4109 | |
11309657 | 4110 | ALL_PRIMARY_SYMTABS (objfile, s) |
96d887e8 PH |
4111 | { |
4112 | switch (SYMBOL_CLASS (sym)) | |
4113 | { | |
4114 | case LOC_CONST: | |
4115 | case LOC_STATIC: | |
4116 | case LOC_TYPEDEF: | |
4117 | case LOC_REGISTER: | |
4118 | case LOC_LABEL: | |
4119 | case LOC_BLOCK: | |
4120 | case LOC_CONST_BYTES: | |
76a01679 JB |
4121 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); |
4122 | ALL_BLOCK_SYMBOLS (b, iter, tmp_sym) if (sym == tmp_sym) | |
4123 | return s; | |
4124 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
4125 | ALL_BLOCK_SYMBOLS (b, iter, tmp_sym) if (sym == tmp_sym) | |
4126 | return s; | |
96d887e8 PH |
4127 | break; |
4128 | default: | |
4129 | break; | |
4130 | } | |
4131 | switch (SYMBOL_CLASS (sym)) | |
4132 | { | |
4133 | case LOC_REGISTER: | |
4134 | case LOC_ARG: | |
4135 | case LOC_REF_ARG: | |
4136 | case LOC_REGPARM: | |
4137 | case LOC_REGPARM_ADDR: | |
4138 | case LOC_LOCAL: | |
4139 | case LOC_TYPEDEF: | |
4140 | case LOC_LOCAL_ARG: | |
4141 | case LOC_BASEREG: | |
4142 | case LOC_BASEREG_ARG: | |
4143 | case LOC_COMPUTED: | |
4144 | case LOC_COMPUTED_ARG: | |
76a01679 JB |
4145 | for (j = FIRST_LOCAL_BLOCK; |
4146 | j < BLOCKVECTOR_NBLOCKS (BLOCKVECTOR (s)); j += 1) | |
4147 | { | |
4148 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), j); | |
4149 | ALL_BLOCK_SYMBOLS (b, iter, tmp_sym) if (sym == tmp_sym) | |
4150 | return s; | |
4151 | } | |
4152 | break; | |
96d887e8 PH |
4153 | default: |
4154 | break; | |
4155 | } | |
4156 | } | |
4157 | return NULL; | |
4c4b4cd2 PH |
4158 | } |
4159 | ||
96d887e8 PH |
4160 | /* Return a minimal symbol matching NAME according to Ada decoding |
4161 | rules. Returns NULL if there is no such minimal symbol. Names | |
4162 | prefixed with "standard__" are handled specially: "standard__" is | |
4163 | first stripped off, and only static and global symbols are searched. */ | |
4c4b4cd2 | 4164 | |
96d887e8 PH |
4165 | struct minimal_symbol * |
4166 | ada_lookup_simple_minsym (const char *name) | |
4c4b4cd2 | 4167 | { |
4c4b4cd2 | 4168 | struct objfile *objfile; |
96d887e8 PH |
4169 | struct minimal_symbol *msymbol; |
4170 | int wild_match; | |
4c4b4cd2 | 4171 | |
96d887e8 | 4172 | if (strncmp (name, "standard__", sizeof ("standard__") - 1) == 0) |
4c4b4cd2 | 4173 | { |
96d887e8 | 4174 | name += sizeof ("standard__") - 1; |
4c4b4cd2 | 4175 | wild_match = 0; |
4c4b4cd2 PH |
4176 | } |
4177 | else | |
96d887e8 | 4178 | wild_match = (strstr (name, "__") == NULL); |
4c4b4cd2 | 4179 | |
96d887e8 PH |
4180 | ALL_MSYMBOLS (objfile, msymbol) |
4181 | { | |
4182 | if (ada_match_name (SYMBOL_LINKAGE_NAME (msymbol), name, wild_match) | |
4183 | && MSYMBOL_TYPE (msymbol) != mst_solib_trampoline) | |
4184 | return msymbol; | |
4185 | } | |
4c4b4cd2 | 4186 | |
96d887e8 PH |
4187 | return NULL; |
4188 | } | |
4c4b4cd2 | 4189 | |
96d887e8 PH |
4190 | /* For all subprograms that statically enclose the subprogram of the |
4191 | selected frame, add symbols matching identifier NAME in DOMAIN | |
4192 | and their blocks to the list of data in OBSTACKP, as for | |
4193 | ada_add_block_symbols (q.v.). If WILD, treat as NAME with a | |
4194 | wildcard prefix. */ | |
4c4b4cd2 | 4195 | |
96d887e8 PH |
4196 | static void |
4197 | add_symbols_from_enclosing_procs (struct obstack *obstackp, | |
76a01679 | 4198 | const char *name, domain_enum namespace, |
96d887e8 PH |
4199 | int wild_match) |
4200 | { | |
96d887e8 | 4201 | } |
14f9c5c9 | 4202 | |
96d887e8 PH |
4203 | /* True if TYPE is definitely an artificial type supplied to a symbol |
4204 | for which no debugging information was given in the symbol file. */ | |
14f9c5c9 | 4205 | |
96d887e8 PH |
4206 | static int |
4207 | is_nondebugging_type (struct type *type) | |
4208 | { | |
4209 | char *name = ada_type_name (type); | |
4210 | return (name != NULL && strcmp (name, "<variable, no debug info>") == 0); | |
4211 | } | |
4c4b4cd2 | 4212 | |
96d887e8 PH |
4213 | /* Remove any non-debugging symbols in SYMS[0 .. NSYMS-1] that definitely |
4214 | duplicate other symbols in the list (The only case I know of where | |
4215 | this happens is when object files containing stabs-in-ecoff are | |
4216 | linked with files containing ordinary ecoff debugging symbols (or no | |
4217 | debugging symbols)). Modifies SYMS to squeeze out deleted entries. | |
4218 | Returns the number of items in the modified list. */ | |
4c4b4cd2 | 4219 | |
96d887e8 PH |
4220 | static int |
4221 | remove_extra_symbols (struct ada_symbol_info *syms, int nsyms) | |
4222 | { | |
4223 | int i, j; | |
4c4b4cd2 | 4224 | |
96d887e8 PH |
4225 | i = 0; |
4226 | while (i < nsyms) | |
4227 | { | |
4228 | if (SYMBOL_LINKAGE_NAME (syms[i].sym) != NULL | |
4229 | && SYMBOL_CLASS (syms[i].sym) == LOC_STATIC | |
4230 | && is_nondebugging_type (SYMBOL_TYPE (syms[i].sym))) | |
4231 | { | |
4232 | for (j = 0; j < nsyms; j += 1) | |
4233 | { | |
4234 | if (i != j | |
4235 | && SYMBOL_LINKAGE_NAME (syms[j].sym) != NULL | |
4236 | && strcmp (SYMBOL_LINKAGE_NAME (syms[i].sym), | |
76a01679 | 4237 | SYMBOL_LINKAGE_NAME (syms[j].sym)) == 0 |
96d887e8 PH |
4238 | && SYMBOL_CLASS (syms[i].sym) == SYMBOL_CLASS (syms[j].sym) |
4239 | && SYMBOL_VALUE_ADDRESS (syms[i].sym) | |
4240 | == SYMBOL_VALUE_ADDRESS (syms[j].sym)) | |
4c4b4cd2 | 4241 | { |
96d887e8 PH |
4242 | int k; |
4243 | for (k = i + 1; k < nsyms; k += 1) | |
76a01679 | 4244 | syms[k - 1] = syms[k]; |
96d887e8 PH |
4245 | nsyms -= 1; |
4246 | goto NextSymbol; | |
4c4b4cd2 | 4247 | } |
4c4b4cd2 | 4248 | } |
4c4b4cd2 | 4249 | } |
96d887e8 PH |
4250 | i += 1; |
4251 | NextSymbol: | |
4252 | ; | |
14f9c5c9 | 4253 | } |
96d887e8 | 4254 | return nsyms; |
14f9c5c9 AS |
4255 | } |
4256 | ||
96d887e8 PH |
4257 | /* Given a type that corresponds to a renaming entity, use the type name |
4258 | to extract the scope (package name or function name, fully qualified, | |
4259 | and following the GNAT encoding convention) where this renaming has been | |
4260 | defined. The string returned needs to be deallocated after use. */ | |
4c4b4cd2 | 4261 | |
96d887e8 PH |
4262 | static char * |
4263 | xget_renaming_scope (struct type *renaming_type) | |
14f9c5c9 | 4264 | { |
96d887e8 PH |
4265 | /* The renaming types adhere to the following convention: |
4266 | <scope>__<rename>___<XR extension>. | |
4267 | So, to extract the scope, we search for the "___XR" extension, | |
4268 | and then backtrack until we find the first "__". */ | |
76a01679 | 4269 | |
96d887e8 PH |
4270 | const char *name = type_name_no_tag (renaming_type); |
4271 | char *suffix = strstr (name, "___XR"); | |
4272 | char *last; | |
4273 | int scope_len; | |
4274 | char *scope; | |
14f9c5c9 | 4275 | |
96d887e8 PH |
4276 | /* Now, backtrack a bit until we find the first "__". Start looking |
4277 | at suffix - 3, as the <rename> part is at least one character long. */ | |
14f9c5c9 | 4278 | |
96d887e8 PH |
4279 | for (last = suffix - 3; last > name; last--) |
4280 | if (last[0] == '_' && last[1] == '_') | |
4281 | break; | |
76a01679 | 4282 | |
96d887e8 | 4283 | /* Make a copy of scope and return it. */ |
14f9c5c9 | 4284 | |
96d887e8 PH |
4285 | scope_len = last - name; |
4286 | scope = (char *) xmalloc ((scope_len + 1) * sizeof (char)); | |
14f9c5c9 | 4287 | |
96d887e8 PH |
4288 | strncpy (scope, name, scope_len); |
4289 | scope[scope_len] = '\0'; | |
4c4b4cd2 | 4290 | |
96d887e8 | 4291 | return scope; |
4c4b4cd2 PH |
4292 | } |
4293 | ||
96d887e8 | 4294 | /* Return nonzero if NAME corresponds to a package name. */ |
4c4b4cd2 | 4295 | |
96d887e8 PH |
4296 | static int |
4297 | is_package_name (const char *name) | |
4c4b4cd2 | 4298 | { |
96d887e8 PH |
4299 | /* Here, We take advantage of the fact that no symbols are generated |
4300 | for packages, while symbols are generated for each function. | |
4301 | So the condition for NAME represent a package becomes equivalent | |
4302 | to NAME not existing in our list of symbols. There is only one | |
4303 | small complication with library-level functions (see below). */ | |
4c4b4cd2 | 4304 | |
96d887e8 | 4305 | char *fun_name; |
76a01679 | 4306 | |
96d887e8 PH |
4307 | /* If it is a function that has not been defined at library level, |
4308 | then we should be able to look it up in the symbols. */ | |
4309 | if (standard_lookup (name, NULL, VAR_DOMAIN) != NULL) | |
4310 | return 0; | |
14f9c5c9 | 4311 | |
96d887e8 PH |
4312 | /* Library-level function names start with "_ada_". See if function |
4313 | "_ada_" followed by NAME can be found. */ | |
14f9c5c9 | 4314 | |
96d887e8 | 4315 | /* Do a quick check that NAME does not contain "__", since library-level |
e1d5a0d2 | 4316 | functions names cannot contain "__" in them. */ |
96d887e8 PH |
4317 | if (strstr (name, "__") != NULL) |
4318 | return 0; | |
4c4b4cd2 | 4319 | |
b435e160 | 4320 | fun_name = xstrprintf ("_ada_%s", name); |
14f9c5c9 | 4321 | |
96d887e8 PH |
4322 | return (standard_lookup (fun_name, NULL, VAR_DOMAIN) == NULL); |
4323 | } | |
14f9c5c9 | 4324 | |
96d887e8 PH |
4325 | /* Return nonzero if SYM corresponds to a renaming entity that is |
4326 | visible from FUNCTION_NAME. */ | |
14f9c5c9 | 4327 | |
96d887e8 PH |
4328 | static int |
4329 | renaming_is_visible (const struct symbol *sym, char *function_name) | |
4330 | { | |
4331 | char *scope = xget_renaming_scope (SYMBOL_TYPE (sym)); | |
d2e4a39e | 4332 | |
96d887e8 | 4333 | make_cleanup (xfree, scope); |
14f9c5c9 | 4334 | |
96d887e8 PH |
4335 | /* If the rename has been defined in a package, then it is visible. */ |
4336 | if (is_package_name (scope)) | |
4337 | return 1; | |
14f9c5c9 | 4338 | |
96d887e8 PH |
4339 | /* Check that the rename is in the current function scope by checking |
4340 | that its name starts with SCOPE. */ | |
76a01679 | 4341 | |
96d887e8 PH |
4342 | /* If the function name starts with "_ada_", it means that it is |
4343 | a library-level function. Strip this prefix before doing the | |
4344 | comparison, as the encoding for the renaming does not contain | |
4345 | this prefix. */ | |
4346 | if (strncmp (function_name, "_ada_", 5) == 0) | |
4347 | function_name += 5; | |
f26caa11 | 4348 | |
96d887e8 | 4349 | return (strncmp (function_name, scope, strlen (scope)) == 0); |
f26caa11 PH |
4350 | } |
4351 | ||
96d887e8 PH |
4352 | /* Iterates over the SYMS list and remove any entry that corresponds to |
4353 | a renaming entity that is not visible from the function associated | |
4354 | with CURRENT_BLOCK. | |
4355 | ||
4356 | Rationale: | |
4357 | GNAT emits a type following a specified encoding for each renaming | |
4358 | entity. Unfortunately, STABS currently does not support the definition | |
4359 | of types that are local to a given lexical block, so all renamings types | |
4360 | are emitted at library level. As a consequence, if an application | |
4361 | contains two renaming entities using the same name, and a user tries to | |
4362 | print the value of one of these entities, the result of the ada symbol | |
4363 | lookup will also contain the wrong renaming type. | |
f26caa11 | 4364 | |
96d887e8 PH |
4365 | This function partially covers for this limitation by attempting to |
4366 | remove from the SYMS list renaming symbols that should be visible | |
4367 | from CURRENT_BLOCK. However, there does not seem be a 100% reliable | |
4368 | method with the current information available. The implementation | |
4369 | below has a couple of limitations (FIXME: brobecker-2003-05-12): | |
4370 | ||
4371 | - When the user tries to print a rename in a function while there | |
4372 | is another rename entity defined in a package: Normally, the | |
4373 | rename in the function has precedence over the rename in the | |
4374 | package, so the latter should be removed from the list. This is | |
4375 | currently not the case. | |
4376 | ||
4377 | - This function will incorrectly remove valid renames if | |
4378 | the CURRENT_BLOCK corresponds to a function which symbol name | |
4379 | has been changed by an "Export" pragma. As a consequence, | |
4380 | the user will be unable to print such rename entities. */ | |
4c4b4cd2 | 4381 | |
14f9c5c9 | 4382 | static int |
96d887e8 | 4383 | remove_out_of_scope_renamings (struct ada_symbol_info *syms, |
b260b6c1 | 4384 | int nsyms, const struct block *current_block) |
4c4b4cd2 PH |
4385 | { |
4386 | struct symbol *current_function; | |
4387 | char *current_function_name; | |
4388 | int i; | |
4389 | ||
4390 | /* Extract the function name associated to CURRENT_BLOCK. | |
4391 | Abort if unable to do so. */ | |
76a01679 | 4392 | |
4c4b4cd2 PH |
4393 | if (current_block == NULL) |
4394 | return nsyms; | |
76a01679 | 4395 | |
4c4b4cd2 PH |
4396 | current_function = block_function (current_block); |
4397 | if (current_function == NULL) | |
4398 | return nsyms; | |
4399 | ||
4400 | current_function_name = SYMBOL_LINKAGE_NAME (current_function); | |
4401 | if (current_function_name == NULL) | |
4402 | return nsyms; | |
4403 | ||
4404 | /* Check each of the symbols, and remove it from the list if it is | |
4405 | a type corresponding to a renaming that is out of the scope of | |
4406 | the current block. */ | |
4407 | ||
4408 | i = 0; | |
4409 | while (i < nsyms) | |
4410 | { | |
4411 | if (ada_is_object_renaming (syms[i].sym) | |
4412 | && !renaming_is_visible (syms[i].sym, current_function_name)) | |
4413 | { | |
4414 | int j; | |
4415 | for (j = i + 1; j < nsyms; j++) | |
76a01679 | 4416 | syms[j - 1] = syms[j]; |
4c4b4cd2 PH |
4417 | nsyms -= 1; |
4418 | } | |
4419 | else | |
4420 | i += 1; | |
4421 | } | |
4422 | ||
4423 | return nsyms; | |
4424 | } | |
4425 | ||
4426 | /* Find symbols in DOMAIN matching NAME0, in BLOCK0 and enclosing | |
4427 | scope and in global scopes, returning the number of matches. Sets | |
4428 | *RESULTS to point to a vector of (SYM,BLOCK,SYMTAB) triples, | |
4429 | indicating the symbols found and the blocks and symbol tables (if | |
4430 | any) in which they were found. This vector are transient---good only to | |
4431 | the next call of ada_lookup_symbol_list. Any non-function/non-enumeral | |
4432 | symbol match within the nest of blocks whose innermost member is BLOCK0, | |
4433 | is the one match returned (no other matches in that or | |
4434 | enclosing blocks is returned). If there are any matches in or | |
4435 | surrounding BLOCK0, then these alone are returned. Otherwise, the | |
4436 | search extends to global and file-scope (static) symbol tables. | |
4437 | Names prefixed with "standard__" are handled specially: "standard__" | |
4438 | is first stripped off, and only static and global symbols are searched. */ | |
14f9c5c9 AS |
4439 | |
4440 | int | |
4c4b4cd2 | 4441 | ada_lookup_symbol_list (const char *name0, const struct block *block0, |
76a01679 JB |
4442 | domain_enum namespace, |
4443 | struct ada_symbol_info **results) | |
14f9c5c9 AS |
4444 | { |
4445 | struct symbol *sym; | |
4446 | struct symtab *s; | |
4447 | struct partial_symtab *ps; | |
4448 | struct blockvector *bv; | |
4449 | struct objfile *objfile; | |
14f9c5c9 | 4450 | struct block *block; |
4c4b4cd2 | 4451 | const char *name; |
14f9c5c9 | 4452 | struct minimal_symbol *msymbol; |
4c4b4cd2 | 4453 | int wild_match; |
14f9c5c9 | 4454 | int cacheIfUnique; |
4c4b4cd2 PH |
4455 | int block_depth; |
4456 | int ndefns; | |
14f9c5c9 | 4457 | |
4c4b4cd2 PH |
4458 | obstack_free (&symbol_list_obstack, NULL); |
4459 | obstack_init (&symbol_list_obstack); | |
14f9c5c9 | 4460 | |
14f9c5c9 AS |
4461 | cacheIfUnique = 0; |
4462 | ||
4463 | /* Search specified block and its superiors. */ | |
4464 | ||
4c4b4cd2 PH |
4465 | wild_match = (strstr (name0, "__") == NULL); |
4466 | name = name0; | |
76a01679 JB |
4467 | block = (struct block *) block0; /* FIXME: No cast ought to be |
4468 | needed, but adding const will | |
4469 | have a cascade effect. */ | |
4c4b4cd2 PH |
4470 | if (strncmp (name0, "standard__", sizeof ("standard__") - 1) == 0) |
4471 | { | |
4472 | wild_match = 0; | |
4473 | block = NULL; | |
4474 | name = name0 + sizeof ("standard__") - 1; | |
4475 | } | |
4476 | ||
4477 | block_depth = 0; | |
14f9c5c9 AS |
4478 | while (block != NULL) |
4479 | { | |
4c4b4cd2 | 4480 | block_depth += 1; |
76a01679 JB |
4481 | ada_add_block_symbols (&symbol_list_obstack, block, name, |
4482 | namespace, NULL, NULL, wild_match); | |
14f9c5c9 | 4483 | |
4c4b4cd2 PH |
4484 | /* If we found a non-function match, assume that's the one. */ |
4485 | if (is_nonfunction (defns_collected (&symbol_list_obstack, 0), | |
76a01679 | 4486 | num_defns_collected (&symbol_list_obstack))) |
4c4b4cd2 | 4487 | goto done; |
14f9c5c9 AS |
4488 | |
4489 | block = BLOCK_SUPERBLOCK (block); | |
4490 | } | |
4491 | ||
4c4b4cd2 PH |
4492 | /* If no luck so far, try to find NAME as a local symbol in some lexically |
4493 | enclosing subprogram. */ | |
4494 | if (num_defns_collected (&symbol_list_obstack) == 0 && block_depth > 2) | |
4495 | add_symbols_from_enclosing_procs (&symbol_list_obstack, | |
76a01679 | 4496 | name, namespace, wild_match); |
4c4b4cd2 PH |
4497 | |
4498 | /* If we found ANY matches among non-global symbols, we're done. */ | |
14f9c5c9 | 4499 | |
4c4b4cd2 | 4500 | if (num_defns_collected (&symbol_list_obstack) > 0) |
14f9c5c9 | 4501 | goto done; |
d2e4a39e | 4502 | |
14f9c5c9 | 4503 | cacheIfUnique = 1; |
4c4b4cd2 PH |
4504 | if (lookup_cached_symbol (name0, namespace, &sym, &block, &s)) |
4505 | { | |
4506 | if (sym != NULL) | |
4507 | add_defn_to_vec (&symbol_list_obstack, sym, block, s); | |
4508 | goto done; | |
4509 | } | |
14f9c5c9 AS |
4510 | |
4511 | /* Now add symbols from all global blocks: symbol tables, minimal symbol | |
4c4b4cd2 | 4512 | tables, and psymtab's. */ |
14f9c5c9 | 4513 | |
11309657 | 4514 | ALL_PRIMARY_SYMTABS (objfile, s) |
d2e4a39e AS |
4515 | { |
4516 | QUIT; | |
d2e4a39e AS |
4517 | bv = BLOCKVECTOR (s); |
4518 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
76a01679 JB |
4519 | ada_add_block_symbols (&symbol_list_obstack, block, name, namespace, |
4520 | objfile, s, wild_match); | |
d2e4a39e | 4521 | } |
14f9c5c9 | 4522 | |
4c4b4cd2 | 4523 | if (namespace == VAR_DOMAIN) |
14f9c5c9 AS |
4524 | { |
4525 | ALL_MSYMBOLS (objfile, msymbol) | |
d2e4a39e | 4526 | { |
4c4b4cd2 PH |
4527 | if (ada_match_name (SYMBOL_LINKAGE_NAME (msymbol), name, wild_match)) |
4528 | { | |
4529 | switch (MSYMBOL_TYPE (msymbol)) | |
4530 | { | |
4531 | case mst_solib_trampoline: | |
4532 | break; | |
4533 | default: | |
4534 | s = find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)); | |
4535 | if (s != NULL) | |
4536 | { | |
4537 | int ndefns0 = num_defns_collected (&symbol_list_obstack); | |
4538 | QUIT; | |
4539 | bv = BLOCKVECTOR (s); | |
4540 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
4541 | ada_add_block_symbols (&symbol_list_obstack, block, | |
4542 | SYMBOL_LINKAGE_NAME (msymbol), | |
4543 | namespace, objfile, s, wild_match); | |
76a01679 | 4544 | |
4c4b4cd2 PH |
4545 | if (num_defns_collected (&symbol_list_obstack) == ndefns0) |
4546 | { | |
4547 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
4548 | ada_add_block_symbols (&symbol_list_obstack, block, | |
4549 | SYMBOL_LINKAGE_NAME (msymbol), | |
4550 | namespace, objfile, s, | |
4551 | wild_match); | |
4552 | } | |
4553 | } | |
4554 | } | |
4555 | } | |
d2e4a39e | 4556 | } |
14f9c5c9 | 4557 | } |
d2e4a39e | 4558 | |
14f9c5c9 | 4559 | ALL_PSYMTABS (objfile, ps) |
d2e4a39e AS |
4560 | { |
4561 | QUIT; | |
4562 | if (!ps->readin | |
4c4b4cd2 | 4563 | && ada_lookup_partial_symbol (ps, name, 1, namespace, wild_match)) |
d2e4a39e | 4564 | { |
4c4b4cd2 PH |
4565 | s = PSYMTAB_TO_SYMTAB (ps); |
4566 | if (!s->primary) | |
4567 | continue; | |
4568 | bv = BLOCKVECTOR (s); | |
4569 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
4570 | ada_add_block_symbols (&symbol_list_obstack, block, name, | |
76a01679 | 4571 | namespace, objfile, s, wild_match); |
d2e4a39e AS |
4572 | } |
4573 | } | |
4574 | ||
4c4b4cd2 | 4575 | /* Now add symbols from all per-file blocks if we've gotten no hits |
14f9c5c9 | 4576 | (Not strictly correct, but perhaps better than an error). |
4c4b4cd2 | 4577 | Do the symtabs first, then check the psymtabs. */ |
d2e4a39e | 4578 | |
4c4b4cd2 | 4579 | if (num_defns_collected (&symbol_list_obstack) == 0) |
14f9c5c9 AS |
4580 | { |
4581 | ||
11309657 | 4582 | ALL_PRIMARY_SYMTABS (objfile, s) |
d2e4a39e | 4583 | { |
4c4b4cd2 | 4584 | QUIT; |
4c4b4cd2 PH |
4585 | bv = BLOCKVECTOR (s); |
4586 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
76a01679 JB |
4587 | ada_add_block_symbols (&symbol_list_obstack, block, name, namespace, |
4588 | objfile, s, wild_match); | |
d2e4a39e AS |
4589 | } |
4590 | ||
14f9c5c9 | 4591 | ALL_PSYMTABS (objfile, ps) |
d2e4a39e | 4592 | { |
4c4b4cd2 PH |
4593 | QUIT; |
4594 | if (!ps->readin | |
4595 | && ada_lookup_partial_symbol (ps, name, 0, namespace, wild_match)) | |
4596 | { | |
4597 | s = PSYMTAB_TO_SYMTAB (ps); | |
4598 | bv = BLOCKVECTOR (s); | |
4599 | if (!s->primary) | |
4600 | continue; | |
4601 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
76a01679 JB |
4602 | ada_add_block_symbols (&symbol_list_obstack, block, name, |
4603 | namespace, objfile, s, wild_match); | |
4c4b4cd2 | 4604 | } |
d2e4a39e AS |
4605 | } |
4606 | } | |
14f9c5c9 | 4607 | |
4c4b4cd2 PH |
4608 | done: |
4609 | ndefns = num_defns_collected (&symbol_list_obstack); | |
4610 | *results = defns_collected (&symbol_list_obstack, 1); | |
4611 | ||
4612 | ndefns = remove_extra_symbols (*results, ndefns); | |
4613 | ||
d2e4a39e | 4614 | if (ndefns == 0) |
4c4b4cd2 | 4615 | cache_symbol (name0, namespace, NULL, NULL, NULL); |
14f9c5c9 | 4616 | |
4c4b4cd2 | 4617 | if (ndefns == 1 && cacheIfUnique) |
76a01679 JB |
4618 | cache_symbol (name0, namespace, (*results)[0].sym, (*results)[0].block, |
4619 | (*results)[0].symtab); | |
14f9c5c9 | 4620 | |
b260b6c1 | 4621 | ndefns = remove_out_of_scope_renamings (*results, ndefns, block0); |
14f9c5c9 | 4622 | |
14f9c5c9 AS |
4623 | return ndefns; |
4624 | } | |
4625 | ||
4c4b4cd2 PH |
4626 | /* Return a symbol in DOMAIN matching NAME, in BLOCK0 and enclosing |
4627 | scope and in global scopes, or NULL if none. NAME is folded and | |
4628 | encoded first. Otherwise, the result is as for ada_lookup_symbol_list, | |
714e53ab PH |
4629 | choosing the first symbol if there are multiple choices. |
4630 | *IS_A_FIELD_OF_THIS is set to 0 and *SYMTAB is set to the symbol | |
4631 | table in which the symbol was found (in both cases, these | |
4632 | assignments occur only if the pointers are non-null). */ | |
4633 | ||
d2e4a39e | 4634 | struct symbol * |
4c4b4cd2 PH |
4635 | ada_lookup_symbol (const char *name, const struct block *block0, |
4636 | domain_enum namespace, int *is_a_field_of_this, | |
76a01679 | 4637 | struct symtab **symtab) |
14f9c5c9 | 4638 | { |
4c4b4cd2 | 4639 | struct ada_symbol_info *candidates; |
14f9c5c9 AS |
4640 | int n_candidates; |
4641 | ||
4c4b4cd2 PH |
4642 | n_candidates = ada_lookup_symbol_list (ada_encode (ada_fold_name (name)), |
4643 | block0, namespace, &candidates); | |
14f9c5c9 AS |
4644 | |
4645 | if (n_candidates == 0) | |
4646 | return NULL; | |
4c4b4cd2 PH |
4647 | |
4648 | if (is_a_field_of_this != NULL) | |
4649 | *is_a_field_of_this = 0; | |
4650 | ||
76a01679 | 4651 | if (symtab != NULL) |
4c4b4cd2 PH |
4652 | { |
4653 | *symtab = candidates[0].symtab; | |
76a01679 JB |
4654 | if (*symtab == NULL && candidates[0].block != NULL) |
4655 | { | |
4656 | struct objfile *objfile; | |
4657 | struct symtab *s; | |
4658 | struct block *b; | |
4659 | struct blockvector *bv; | |
4660 | ||
4661 | /* Search the list of symtabs for one which contains the | |
4662 | address of the start of this block. */ | |
11309657 | 4663 | ALL_PRIMARY_SYMTABS (objfile, s) |
76a01679 JB |
4664 | { |
4665 | bv = BLOCKVECTOR (s); | |
4666 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
4667 | if (BLOCK_START (b) <= BLOCK_START (candidates[0].block) | |
4668 | && BLOCK_END (b) > BLOCK_START (candidates[0].block)) | |
4669 | { | |
4670 | *symtab = s; | |
4671 | return fixup_symbol_section (candidates[0].sym, objfile); | |
4672 | } | |
76a01679 | 4673 | } |
529cad9c PH |
4674 | /* FIXME: brobecker/2004-11-12: I think that we should never |
4675 | reach this point. I don't see a reason why we would not | |
4676 | find a symtab for a given block, so I suggest raising an | |
4677 | internal_error exception here. Otherwise, we end up | |
4678 | returning a symbol but no symtab, which certain parts of | |
4679 | the code that rely (indirectly) on this function do not | |
4680 | expect, eventually causing a SEGV. */ | |
4681 | return fixup_symbol_section (candidates[0].sym, NULL); | |
76a01679 JB |
4682 | } |
4683 | } | |
4c4b4cd2 PH |
4684 | return candidates[0].sym; |
4685 | } | |
14f9c5c9 | 4686 | |
4c4b4cd2 PH |
4687 | static struct symbol * |
4688 | ada_lookup_symbol_nonlocal (const char *name, | |
76a01679 JB |
4689 | const char *linkage_name, |
4690 | const struct block *block, | |
4691 | const domain_enum domain, struct symtab **symtab) | |
4c4b4cd2 PH |
4692 | { |
4693 | if (linkage_name == NULL) | |
4694 | linkage_name = name; | |
76a01679 JB |
4695 | return ada_lookup_symbol (linkage_name, block_static_block (block), domain, |
4696 | NULL, symtab); | |
14f9c5c9 AS |
4697 | } |
4698 | ||
4699 | ||
4c4b4cd2 PH |
4700 | /* True iff STR is a possible encoded suffix of a normal Ada name |
4701 | that is to be ignored for matching purposes. Suffixes of parallel | |
4702 | names (e.g., XVE) are not included here. Currently, the possible suffixes | |
4703 | are given by either of the regular expression: | |
4704 | ||
529cad9c PH |
4705 | (__[0-9]+)?[.$][0-9]+ [nested subprogram suffix, on platforms such |
4706 | as GNU/Linux] | |
4c4b4cd2 | 4707 | ___[0-9]+ [nested subprogram suffix, on platforms such as HP/UX] |
529cad9c | 4708 | _E[0-9]+[bs]$ [protected object entry suffixes] |
61ee279c | 4709 | (X[nb]*)?((\$|__)[0-9](_?[0-9]+)|___(JM|LJM|X([FDBUP].*|R[^T]?)))?$ |
14f9c5c9 | 4710 | */ |
4c4b4cd2 | 4711 | |
14f9c5c9 | 4712 | static int |
d2e4a39e | 4713 | is_name_suffix (const char *str) |
14f9c5c9 AS |
4714 | { |
4715 | int k; | |
4c4b4cd2 PH |
4716 | const char *matching; |
4717 | const int len = strlen (str); | |
4718 | ||
4719 | /* (__[0-9]+)?\.[0-9]+ */ | |
4720 | matching = str; | |
4721 | if (len > 3 && str[0] == '_' && str[1] == '_' && isdigit (str[2])) | |
4722 | { | |
4723 | matching += 3; | |
4724 | while (isdigit (matching[0])) | |
4725 | matching += 1; | |
4726 | if (matching[0] == '\0') | |
4727 | return 1; | |
4728 | } | |
4729 | ||
529cad9c | 4730 | if (matching[0] == '.' || matching[0] == '$') |
4c4b4cd2 PH |
4731 | { |
4732 | matching += 1; | |
4733 | while (isdigit (matching[0])) | |
4734 | matching += 1; | |
4735 | if (matching[0] == '\0') | |
4736 | return 1; | |
4737 | } | |
4738 | ||
4739 | /* ___[0-9]+ */ | |
4740 | if (len > 3 && str[0] == '_' && str[1] == '_' && str[2] == '_') | |
4741 | { | |
4742 | matching = str + 3; | |
4743 | while (isdigit (matching[0])) | |
4744 | matching += 1; | |
4745 | if (matching[0] == '\0') | |
4746 | return 1; | |
4747 | } | |
4748 | ||
529cad9c PH |
4749 | #if 0 |
4750 | /* FIXME: brobecker/2005-09-23: Protected Object subprograms end | |
4751 | with a N at the end. Unfortunately, the compiler uses the same | |
4752 | convention for other internal types it creates. So treating | |
4753 | all entity names that end with an "N" as a name suffix causes | |
4754 | some regressions. For instance, consider the case of an enumerated | |
4755 | type. To support the 'Image attribute, it creates an array whose | |
4756 | name ends with N. | |
4757 | Having a single character like this as a suffix carrying some | |
4758 | information is a bit risky. Perhaps we should change the encoding | |
4759 | to be something like "_N" instead. In the meantime, do not do | |
4760 | the following check. */ | |
4761 | /* Protected Object Subprograms */ | |
4762 | if (len == 1 && str [0] == 'N') | |
4763 | return 1; | |
4764 | #endif | |
4765 | ||
4766 | /* _E[0-9]+[bs]$ */ | |
4767 | if (len > 3 && str[0] == '_' && str [1] == 'E' && isdigit (str[2])) | |
4768 | { | |
4769 | matching = str + 3; | |
4770 | while (isdigit (matching[0])) | |
4771 | matching += 1; | |
4772 | if ((matching[0] == 'b' || matching[0] == 's') | |
4773 | && matching [1] == '\0') | |
4774 | return 1; | |
4775 | } | |
4776 | ||
4c4b4cd2 PH |
4777 | /* ??? We should not modify STR directly, as we are doing below. This |
4778 | is fine in this case, but may become problematic later if we find | |
4779 | that this alternative did not work, and want to try matching | |
4780 | another one from the begining of STR. Since we modified it, we | |
4781 | won't be able to find the begining of the string anymore! */ | |
14f9c5c9 AS |
4782 | if (str[0] == 'X') |
4783 | { | |
4784 | str += 1; | |
d2e4a39e | 4785 | while (str[0] != '_' && str[0] != '\0') |
4c4b4cd2 PH |
4786 | { |
4787 | if (str[0] != 'n' && str[0] != 'b') | |
4788 | return 0; | |
4789 | str += 1; | |
4790 | } | |
14f9c5c9 AS |
4791 | } |
4792 | if (str[0] == '\000') | |
4793 | return 1; | |
d2e4a39e | 4794 | if (str[0] == '_') |
14f9c5c9 AS |
4795 | { |
4796 | if (str[1] != '_' || str[2] == '\000') | |
4c4b4cd2 | 4797 | return 0; |
d2e4a39e | 4798 | if (str[2] == '_') |
4c4b4cd2 | 4799 | { |
61ee279c PH |
4800 | if (strcmp (str + 3, "JM") == 0) |
4801 | return 1; | |
4802 | /* FIXME: brobecker/2004-09-30: GNAT will soon stop using | |
4803 | the LJM suffix in favor of the JM one. But we will | |
4804 | still accept LJM as a valid suffix for a reasonable | |
4805 | amount of time, just to allow ourselves to debug programs | |
4806 | compiled using an older version of GNAT. */ | |
4c4b4cd2 PH |
4807 | if (strcmp (str + 3, "LJM") == 0) |
4808 | return 1; | |
4809 | if (str[3] != 'X') | |
4810 | return 0; | |
1265e4aa JB |
4811 | if (str[4] == 'F' || str[4] == 'D' || str[4] == 'B' |
4812 | || str[4] == 'U' || str[4] == 'P') | |
4c4b4cd2 PH |
4813 | return 1; |
4814 | if (str[4] == 'R' && str[5] != 'T') | |
4815 | return 1; | |
4816 | return 0; | |
4817 | } | |
4818 | if (!isdigit (str[2])) | |
4819 | return 0; | |
4820 | for (k = 3; str[k] != '\0'; k += 1) | |
4821 | if (!isdigit (str[k]) && str[k] != '_') | |
4822 | return 0; | |
14f9c5c9 AS |
4823 | return 1; |
4824 | } | |
4c4b4cd2 | 4825 | if (str[0] == '$' && isdigit (str[1])) |
14f9c5c9 | 4826 | { |
4c4b4cd2 PH |
4827 | for (k = 2; str[k] != '\0'; k += 1) |
4828 | if (!isdigit (str[k]) && str[k] != '_') | |
4829 | return 0; | |
14f9c5c9 AS |
4830 | return 1; |
4831 | } | |
4832 | return 0; | |
4833 | } | |
d2e4a39e | 4834 | |
4c4b4cd2 PH |
4835 | /* Return nonzero if the given string starts with a dot ('.') |
4836 | followed by zero or more digits. | |
4837 | ||
4838 | Note: brobecker/2003-11-10: A forward declaration has not been | |
4839 | added at the begining of this file yet, because this function | |
4840 | is only used to work around a problem found during wild matching | |
4841 | when trying to match minimal symbol names against symbol names | |
4842 | obtained from dwarf-2 data. This function is therefore currently | |
4843 | only used in wild_match() and is likely to be deleted when the | |
4844 | problem in dwarf-2 is fixed. */ | |
4845 | ||
4846 | static int | |
4847 | is_dot_digits_suffix (const char *str) | |
4848 | { | |
4849 | if (str[0] != '.') | |
4850 | return 0; | |
4851 | ||
4852 | str++; | |
4853 | while (isdigit (str[0])) | |
4854 | str++; | |
4855 | return (str[0] == '\0'); | |
4856 | } | |
4857 | ||
529cad9c PH |
4858 | /* Return non-zero if NAME0 is a valid match when doing wild matching. |
4859 | Certain symbols appear at first to match, except that they turn out | |
4860 | not to follow the Ada encoding and hence should not be used as a wild | |
4861 | match of a given pattern. */ | |
4862 | ||
4863 | static int | |
4864 | is_valid_name_for_wild_match (const char *name0) | |
4865 | { | |
4866 | const char *decoded_name = ada_decode (name0); | |
4867 | int i; | |
4868 | ||
4869 | for (i=0; decoded_name[i] != '\0'; i++) | |
4870 | if (isalpha (decoded_name[i]) && !islower (decoded_name[i])) | |
4871 | return 0; | |
4872 | ||
4873 | return 1; | |
4874 | } | |
4875 | ||
4c4b4cd2 PH |
4876 | /* True if NAME represents a name of the form A1.A2....An, n>=1 and |
4877 | PATN[0..PATN_LEN-1] = Ak.Ak+1.....An for some k >= 1. Ignores | |
4878 | informational suffixes of NAME (i.e., for which is_name_suffix is | |
4879 | true). */ | |
4880 | ||
14f9c5c9 | 4881 | static int |
4c4b4cd2 | 4882 | wild_match (const char *patn0, int patn_len, const char *name0) |
14f9c5c9 AS |
4883 | { |
4884 | int name_len; | |
4c4b4cd2 PH |
4885 | char *name; |
4886 | char *patn; | |
4887 | ||
4888 | /* FIXME: brobecker/2003-11-10: For some reason, the symbol name | |
4889 | stored in the symbol table for nested function names is sometimes | |
4890 | different from the name of the associated entity stored in | |
4891 | the dwarf-2 data: This is the case for nested subprograms, where | |
4892 | the minimal symbol name contains a trailing ".[:digit:]+" suffix, | |
4893 | while the symbol name from the dwarf-2 data does not. | |
4894 | ||
4895 | Although the DWARF-2 standard documents that entity names stored | |
4896 | in the dwarf-2 data should be identical to the name as seen in | |
4897 | the source code, GNAT takes a different approach as we already use | |
4898 | a special encoding mechanism to convey the information so that | |
4899 | a C debugger can still use the information generated to debug | |
4900 | Ada programs. A corollary is that the symbol names in the dwarf-2 | |
4901 | data should match the names found in the symbol table. I therefore | |
4902 | consider this issue as a compiler defect. | |
76a01679 | 4903 | |
4c4b4cd2 PH |
4904 | Until the compiler is properly fixed, we work-around the problem |
4905 | by ignoring such suffixes during the match. We do so by making | |
4906 | a copy of PATN0 and NAME0, and then by stripping such a suffix | |
4907 | if present. We then perform the match on the resulting strings. */ | |
4908 | { | |
4909 | char *dot; | |
4910 | name_len = strlen (name0); | |
4911 | ||
4912 | name = (char *) alloca ((name_len + 1) * sizeof (char)); | |
4913 | strcpy (name, name0); | |
4914 | dot = strrchr (name, '.'); | |
4915 | if (dot != NULL && is_dot_digits_suffix (dot)) | |
4916 | *dot = '\0'; | |
4917 | ||
4918 | patn = (char *) alloca ((patn_len + 1) * sizeof (char)); | |
4919 | strncpy (patn, patn0, patn_len); | |
4920 | patn[patn_len] = '\0'; | |
4921 | dot = strrchr (patn, '.'); | |
4922 | if (dot != NULL && is_dot_digits_suffix (dot)) | |
4923 | { | |
4924 | *dot = '\0'; | |
4925 | patn_len = dot - patn; | |
4926 | } | |
4927 | } | |
4928 | ||
4929 | /* Now perform the wild match. */ | |
14f9c5c9 AS |
4930 | |
4931 | name_len = strlen (name); | |
4c4b4cd2 PH |
4932 | if (name_len >= patn_len + 5 && strncmp (name, "_ada_", 5) == 0 |
4933 | && strncmp (patn, name + 5, patn_len) == 0 | |
d2e4a39e | 4934 | && is_name_suffix (name + patn_len + 5)) |
14f9c5c9 AS |
4935 | return 1; |
4936 | ||
d2e4a39e | 4937 | while (name_len >= patn_len) |
14f9c5c9 | 4938 | { |
4c4b4cd2 PH |
4939 | if (strncmp (patn, name, patn_len) == 0 |
4940 | && is_name_suffix (name + patn_len)) | |
529cad9c | 4941 | return (is_valid_name_for_wild_match (name0)); |
4c4b4cd2 PH |
4942 | do |
4943 | { | |
4944 | name += 1; | |
4945 | name_len -= 1; | |
4946 | } | |
d2e4a39e | 4947 | while (name_len > 0 |
4c4b4cd2 | 4948 | && name[0] != '.' && (name[0] != '_' || name[1] != '_')); |
14f9c5c9 | 4949 | if (name_len <= 0) |
4c4b4cd2 | 4950 | return 0; |
14f9c5c9 | 4951 | if (name[0] == '_') |
4c4b4cd2 PH |
4952 | { |
4953 | if (!islower (name[2])) | |
4954 | return 0; | |
4955 | name += 2; | |
4956 | name_len -= 2; | |
4957 | } | |
14f9c5c9 | 4958 | else |
4c4b4cd2 PH |
4959 | { |
4960 | if (!islower (name[1])) | |
4961 | return 0; | |
4962 | name += 1; | |
4963 | name_len -= 1; | |
4964 | } | |
96d887e8 PH |
4965 | } |
4966 | ||
4967 | return 0; | |
4968 | } | |
4969 | ||
4970 | ||
4971 | /* Add symbols from BLOCK matching identifier NAME in DOMAIN to | |
4972 | vector *defn_symbols, updating the list of symbols in OBSTACKP | |
4973 | (if necessary). If WILD, treat as NAME with a wildcard prefix. | |
4974 | OBJFILE is the section containing BLOCK. | |
4975 | SYMTAB is recorded with each symbol added. */ | |
4976 | ||
4977 | static void | |
4978 | ada_add_block_symbols (struct obstack *obstackp, | |
76a01679 | 4979 | struct block *block, const char *name, |
96d887e8 PH |
4980 | domain_enum domain, struct objfile *objfile, |
4981 | struct symtab *symtab, int wild) | |
4982 | { | |
4983 | struct dict_iterator iter; | |
4984 | int name_len = strlen (name); | |
4985 | /* A matching argument symbol, if any. */ | |
4986 | struct symbol *arg_sym; | |
4987 | /* Set true when we find a matching non-argument symbol. */ | |
4988 | int found_sym; | |
4989 | struct symbol *sym; | |
4990 | ||
4991 | arg_sym = NULL; | |
4992 | found_sym = 0; | |
4993 | if (wild) | |
4994 | { | |
4995 | struct symbol *sym; | |
4996 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
76a01679 | 4997 | { |
1265e4aa JB |
4998 | if (SYMBOL_DOMAIN (sym) == domain |
4999 | && wild_match (name, name_len, SYMBOL_LINKAGE_NAME (sym))) | |
76a01679 JB |
5000 | { |
5001 | switch (SYMBOL_CLASS (sym)) | |
5002 | { | |
5003 | case LOC_ARG: | |
5004 | case LOC_LOCAL_ARG: | |
5005 | case LOC_REF_ARG: | |
5006 | case LOC_REGPARM: | |
5007 | case LOC_REGPARM_ADDR: | |
5008 | case LOC_BASEREG_ARG: | |
5009 | case LOC_COMPUTED_ARG: | |
5010 | arg_sym = sym; | |
5011 | break; | |
5012 | case LOC_UNRESOLVED: | |
5013 | continue; | |
5014 | default: | |
5015 | found_sym = 1; | |
5016 | add_defn_to_vec (obstackp, | |
5017 | fixup_symbol_section (sym, objfile), | |
5018 | block, symtab); | |
5019 | break; | |
5020 | } | |
5021 | } | |
5022 | } | |
96d887e8 PH |
5023 | } |
5024 | else | |
5025 | { | |
5026 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
76a01679 JB |
5027 | { |
5028 | if (SYMBOL_DOMAIN (sym) == domain) | |
5029 | { | |
5030 | int cmp = strncmp (name, SYMBOL_LINKAGE_NAME (sym), name_len); | |
5031 | if (cmp == 0 | |
5032 | && is_name_suffix (SYMBOL_LINKAGE_NAME (sym) + name_len)) | |
5033 | { | |
5034 | switch (SYMBOL_CLASS (sym)) | |
5035 | { | |
5036 | case LOC_ARG: | |
5037 | case LOC_LOCAL_ARG: | |
5038 | case LOC_REF_ARG: | |
5039 | case LOC_REGPARM: | |
5040 | case LOC_REGPARM_ADDR: | |
5041 | case LOC_BASEREG_ARG: | |
5042 | case LOC_COMPUTED_ARG: | |
5043 | arg_sym = sym; | |
5044 | break; | |
5045 | case LOC_UNRESOLVED: | |
5046 | break; | |
5047 | default: | |
5048 | found_sym = 1; | |
5049 | add_defn_to_vec (obstackp, | |
5050 | fixup_symbol_section (sym, objfile), | |
5051 | block, symtab); | |
5052 | break; | |
5053 | } | |
5054 | } | |
5055 | } | |
5056 | } | |
96d887e8 PH |
5057 | } |
5058 | ||
5059 | if (!found_sym && arg_sym != NULL) | |
5060 | { | |
76a01679 JB |
5061 | add_defn_to_vec (obstackp, |
5062 | fixup_symbol_section (arg_sym, objfile), | |
5063 | block, symtab); | |
96d887e8 PH |
5064 | } |
5065 | ||
5066 | if (!wild) | |
5067 | { | |
5068 | arg_sym = NULL; | |
5069 | found_sym = 0; | |
5070 | ||
5071 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
76a01679 JB |
5072 | { |
5073 | if (SYMBOL_DOMAIN (sym) == domain) | |
5074 | { | |
5075 | int cmp; | |
5076 | ||
5077 | cmp = (int) '_' - (int) SYMBOL_LINKAGE_NAME (sym)[0]; | |
5078 | if (cmp == 0) | |
5079 | { | |
5080 | cmp = strncmp ("_ada_", SYMBOL_LINKAGE_NAME (sym), 5); | |
5081 | if (cmp == 0) | |
5082 | cmp = strncmp (name, SYMBOL_LINKAGE_NAME (sym) + 5, | |
5083 | name_len); | |
5084 | } | |
5085 | ||
5086 | if (cmp == 0 | |
5087 | && is_name_suffix (SYMBOL_LINKAGE_NAME (sym) + name_len + 5)) | |
5088 | { | |
5089 | switch (SYMBOL_CLASS (sym)) | |
5090 | { | |
5091 | case LOC_ARG: | |
5092 | case LOC_LOCAL_ARG: | |
5093 | case LOC_REF_ARG: | |
5094 | case LOC_REGPARM: | |
5095 | case LOC_REGPARM_ADDR: | |
5096 | case LOC_BASEREG_ARG: | |
5097 | case LOC_COMPUTED_ARG: | |
5098 | arg_sym = sym; | |
5099 | break; | |
5100 | case LOC_UNRESOLVED: | |
5101 | break; | |
5102 | default: | |
5103 | found_sym = 1; | |
5104 | add_defn_to_vec (obstackp, | |
5105 | fixup_symbol_section (sym, objfile), | |
5106 | block, symtab); | |
5107 | break; | |
5108 | } | |
5109 | } | |
5110 | } | |
76a01679 | 5111 | } |
96d887e8 PH |
5112 | |
5113 | /* NOTE: This really shouldn't be needed for _ada_ symbols. | |
5114 | They aren't parameters, right? */ | |
5115 | if (!found_sym && arg_sym != NULL) | |
5116 | { | |
5117 | add_defn_to_vec (obstackp, | |
76a01679 JB |
5118 | fixup_symbol_section (arg_sym, objfile), |
5119 | block, symtab); | |
96d887e8 PH |
5120 | } |
5121 | } | |
5122 | } | |
5123 | \f | |
963a6417 | 5124 | /* Field Access */ |
96d887e8 | 5125 | |
963a6417 PH |
5126 | /* True if field number FIELD_NUM in struct or union type TYPE is supposed |
5127 | to be invisible to users. */ | |
96d887e8 | 5128 | |
963a6417 PH |
5129 | int |
5130 | ada_is_ignored_field (struct type *type, int field_num) | |
96d887e8 | 5131 | { |
963a6417 PH |
5132 | if (field_num < 0 || field_num > TYPE_NFIELDS (type)) |
5133 | return 1; | |
5134 | else | |
96d887e8 | 5135 | { |
963a6417 PH |
5136 | const char *name = TYPE_FIELD_NAME (type, field_num); |
5137 | return (name == NULL | |
5138 | || (name[0] == '_' && strncmp (name, "_parent", 7) != 0)); | |
96d887e8 | 5139 | } |
963a6417 | 5140 | } |
96d887e8 | 5141 | |
963a6417 PH |
5142 | /* True iff TYPE has a tag field. If REFOK, then TYPE may also be a |
5143 | pointer or reference type whose ultimate target has a tag field. */ | |
96d887e8 | 5144 | |
963a6417 PH |
5145 | int |
5146 | ada_is_tagged_type (struct type *type, int refok) | |
5147 | { | |
5148 | return (ada_lookup_struct_elt_type (type, "_tag", refok, 1, NULL) != NULL); | |
5149 | } | |
96d887e8 | 5150 | |
963a6417 | 5151 | /* True iff TYPE represents the type of X'Tag */ |
96d887e8 | 5152 | |
963a6417 PH |
5153 | int |
5154 | ada_is_tag_type (struct type *type) | |
5155 | { | |
5156 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_PTR) | |
5157 | return 0; | |
5158 | else | |
96d887e8 | 5159 | { |
963a6417 PH |
5160 | const char *name = ada_type_name (TYPE_TARGET_TYPE (type)); |
5161 | return (name != NULL | |
5162 | && strcmp (name, "ada__tags__dispatch_table") == 0); | |
96d887e8 | 5163 | } |
96d887e8 PH |
5164 | } |
5165 | ||
963a6417 | 5166 | /* The type of the tag on VAL. */ |
76a01679 | 5167 | |
963a6417 PH |
5168 | struct type * |
5169 | ada_tag_type (struct value *val) | |
96d887e8 | 5170 | { |
df407dfe | 5171 | return ada_lookup_struct_elt_type (value_type (val), "_tag", 1, 0, NULL); |
963a6417 | 5172 | } |
96d887e8 | 5173 | |
963a6417 | 5174 | /* The value of the tag on VAL. */ |
96d887e8 | 5175 | |
963a6417 PH |
5176 | struct value * |
5177 | ada_value_tag (struct value *val) | |
5178 | { | |
03ee6b2e | 5179 | return ada_value_struct_elt (val, "_tag", 0); |
96d887e8 PH |
5180 | } |
5181 | ||
963a6417 PH |
5182 | /* The value of the tag on the object of type TYPE whose contents are |
5183 | saved at VALADDR, if it is non-null, or is at memory address | |
5184 | ADDRESS. */ | |
96d887e8 | 5185 | |
963a6417 | 5186 | static struct value * |
10a2c479 | 5187 | value_tag_from_contents_and_address (struct type *type, |
fc1a4b47 | 5188 | const gdb_byte *valaddr, |
963a6417 | 5189 | CORE_ADDR address) |
96d887e8 | 5190 | { |
963a6417 PH |
5191 | int tag_byte_offset, dummy1, dummy2; |
5192 | struct type *tag_type; | |
5193 | if (find_struct_field ("_tag", type, 0, &tag_type, &tag_byte_offset, | |
52ce6436 | 5194 | NULL, NULL, NULL)) |
96d887e8 | 5195 | { |
fc1a4b47 | 5196 | const gdb_byte *valaddr1 = ((valaddr == NULL) |
10a2c479 AC |
5197 | ? NULL |
5198 | : valaddr + tag_byte_offset); | |
963a6417 | 5199 | CORE_ADDR address1 = (address == 0) ? 0 : address + tag_byte_offset; |
96d887e8 | 5200 | |
963a6417 | 5201 | return value_from_contents_and_address (tag_type, valaddr1, address1); |
96d887e8 | 5202 | } |
963a6417 PH |
5203 | return NULL; |
5204 | } | |
96d887e8 | 5205 | |
963a6417 PH |
5206 | static struct type * |
5207 | type_from_tag (struct value *tag) | |
5208 | { | |
5209 | const char *type_name = ada_tag_name (tag); | |
5210 | if (type_name != NULL) | |
5211 | return ada_find_any_type (ada_encode (type_name)); | |
5212 | return NULL; | |
5213 | } | |
96d887e8 | 5214 | |
963a6417 PH |
5215 | struct tag_args |
5216 | { | |
5217 | struct value *tag; | |
5218 | char *name; | |
5219 | }; | |
4c4b4cd2 | 5220 | |
529cad9c PH |
5221 | |
5222 | static int ada_tag_name_1 (void *); | |
5223 | static int ada_tag_name_2 (struct tag_args *); | |
5224 | ||
4c4b4cd2 PH |
5225 | /* Wrapper function used by ada_tag_name. Given a struct tag_args* |
5226 | value ARGS, sets ARGS->name to the tag name of ARGS->tag. | |
5227 | The value stored in ARGS->name is valid until the next call to | |
5228 | ada_tag_name_1. */ | |
5229 | ||
5230 | static int | |
5231 | ada_tag_name_1 (void *args0) | |
5232 | { | |
5233 | struct tag_args *args = (struct tag_args *) args0; | |
5234 | static char name[1024]; | |
76a01679 | 5235 | char *p; |
4c4b4cd2 PH |
5236 | struct value *val; |
5237 | args->name = NULL; | |
03ee6b2e | 5238 | val = ada_value_struct_elt (args->tag, "tsd", 1); |
529cad9c PH |
5239 | if (val == NULL) |
5240 | return ada_tag_name_2 (args); | |
03ee6b2e | 5241 | val = ada_value_struct_elt (val, "expanded_name", 1); |
529cad9c PH |
5242 | if (val == NULL) |
5243 | return 0; | |
5244 | read_memory_string (value_as_address (val), name, sizeof (name) - 1); | |
5245 | for (p = name; *p != '\0'; p += 1) | |
5246 | if (isalpha (*p)) | |
5247 | *p = tolower (*p); | |
5248 | args->name = name; | |
5249 | return 0; | |
5250 | } | |
5251 | ||
5252 | /* Utility function for ada_tag_name_1 that tries the second | |
5253 | representation for the dispatch table (in which there is no | |
5254 | explicit 'tsd' field in the referent of the tag pointer, and instead | |
5255 | the tsd pointer is stored just before the dispatch table. */ | |
5256 | ||
5257 | static int | |
5258 | ada_tag_name_2 (struct tag_args *args) | |
5259 | { | |
5260 | struct type *info_type; | |
5261 | static char name[1024]; | |
5262 | char *p; | |
5263 | struct value *val, *valp; | |
5264 | ||
5265 | args->name = NULL; | |
5266 | info_type = ada_find_any_type ("ada__tags__type_specific_data"); | |
5267 | if (info_type == NULL) | |
5268 | return 0; | |
5269 | info_type = lookup_pointer_type (lookup_pointer_type (info_type)); | |
5270 | valp = value_cast (info_type, args->tag); | |
5271 | if (valp == NULL) | |
5272 | return 0; | |
5273 | val = value_ind (value_add (valp, value_from_longest (builtin_type_int, -1))); | |
4c4b4cd2 PH |
5274 | if (val == NULL) |
5275 | return 0; | |
03ee6b2e | 5276 | val = ada_value_struct_elt (val, "expanded_name", 1); |
4c4b4cd2 PH |
5277 | if (val == NULL) |
5278 | return 0; | |
5279 | read_memory_string (value_as_address (val), name, sizeof (name) - 1); | |
5280 | for (p = name; *p != '\0'; p += 1) | |
5281 | if (isalpha (*p)) | |
5282 | *p = tolower (*p); | |
5283 | args->name = name; | |
5284 | return 0; | |
5285 | } | |
5286 | ||
5287 | /* The type name of the dynamic type denoted by the 'tag value TAG, as | |
5288 | * a C string. */ | |
5289 | ||
5290 | const char * | |
5291 | ada_tag_name (struct value *tag) | |
5292 | { | |
5293 | struct tag_args args; | |
df407dfe | 5294 | if (!ada_is_tag_type (value_type (tag))) |
4c4b4cd2 | 5295 | return NULL; |
76a01679 | 5296 | args.tag = tag; |
4c4b4cd2 PH |
5297 | args.name = NULL; |
5298 | catch_errors (ada_tag_name_1, &args, NULL, RETURN_MASK_ALL); | |
5299 | return args.name; | |
5300 | } | |
5301 | ||
5302 | /* The parent type of TYPE, or NULL if none. */ | |
14f9c5c9 | 5303 | |
d2e4a39e | 5304 | struct type * |
ebf56fd3 | 5305 | ada_parent_type (struct type *type) |
14f9c5c9 AS |
5306 | { |
5307 | int i; | |
5308 | ||
61ee279c | 5309 | type = ada_check_typedef (type); |
14f9c5c9 AS |
5310 | |
5311 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT) | |
5312 | return NULL; | |
5313 | ||
5314 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
5315 | if (ada_is_parent_field (type, i)) | |
61ee279c | 5316 | return ada_check_typedef (TYPE_FIELD_TYPE (type, i)); |
14f9c5c9 AS |
5317 | |
5318 | return NULL; | |
5319 | } | |
5320 | ||
4c4b4cd2 PH |
5321 | /* True iff field number FIELD_NUM of structure type TYPE contains the |
5322 | parent-type (inherited) fields of a derived type. Assumes TYPE is | |
5323 | a structure type with at least FIELD_NUM+1 fields. */ | |
14f9c5c9 AS |
5324 | |
5325 | int | |
ebf56fd3 | 5326 | ada_is_parent_field (struct type *type, int field_num) |
14f9c5c9 | 5327 | { |
61ee279c | 5328 | const char *name = TYPE_FIELD_NAME (ada_check_typedef (type), field_num); |
4c4b4cd2 PH |
5329 | return (name != NULL |
5330 | && (strncmp (name, "PARENT", 6) == 0 | |
5331 | || strncmp (name, "_parent", 7) == 0)); | |
14f9c5c9 AS |
5332 | } |
5333 | ||
4c4b4cd2 | 5334 | /* True iff field number FIELD_NUM of structure type TYPE is a |
14f9c5c9 | 5335 | transparent wrapper field (which should be silently traversed when doing |
4c4b4cd2 | 5336 | field selection and flattened when printing). Assumes TYPE is a |
14f9c5c9 | 5337 | structure type with at least FIELD_NUM+1 fields. Such fields are always |
4c4b4cd2 | 5338 | structures. */ |
14f9c5c9 AS |
5339 | |
5340 | int | |
ebf56fd3 | 5341 | ada_is_wrapper_field (struct type *type, int field_num) |
14f9c5c9 | 5342 | { |
d2e4a39e AS |
5343 | const char *name = TYPE_FIELD_NAME (type, field_num); |
5344 | return (name != NULL | |
4c4b4cd2 PH |
5345 | && (strncmp (name, "PARENT", 6) == 0 |
5346 | || strcmp (name, "REP") == 0 | |
5347 | || strncmp (name, "_parent", 7) == 0 | |
5348 | || name[0] == 'S' || name[0] == 'R' || name[0] == 'O')); | |
14f9c5c9 AS |
5349 | } |
5350 | ||
4c4b4cd2 PH |
5351 | /* True iff field number FIELD_NUM of structure or union type TYPE |
5352 | is a variant wrapper. Assumes TYPE is a structure type with at least | |
5353 | FIELD_NUM+1 fields. */ | |
14f9c5c9 AS |
5354 | |
5355 | int | |
ebf56fd3 | 5356 | ada_is_variant_part (struct type *type, int field_num) |
14f9c5c9 | 5357 | { |
d2e4a39e | 5358 | struct type *field_type = TYPE_FIELD_TYPE (type, field_num); |
14f9c5c9 | 5359 | return (TYPE_CODE (field_type) == TYPE_CODE_UNION |
4c4b4cd2 | 5360 | || (is_dynamic_field (type, field_num) |
c3e5cd34 PH |
5361 | && (TYPE_CODE (TYPE_TARGET_TYPE (field_type)) |
5362 | == TYPE_CODE_UNION))); | |
14f9c5c9 AS |
5363 | } |
5364 | ||
5365 | /* Assuming that VAR_TYPE is a variant wrapper (type of the variant part) | |
4c4b4cd2 | 5366 | whose discriminants are contained in the record type OUTER_TYPE, |
14f9c5c9 AS |
5367 | returns the type of the controlling discriminant for the variant. */ |
5368 | ||
d2e4a39e | 5369 | struct type * |
ebf56fd3 | 5370 | ada_variant_discrim_type (struct type *var_type, struct type *outer_type) |
14f9c5c9 | 5371 | { |
d2e4a39e | 5372 | char *name = ada_variant_discrim_name (var_type); |
76a01679 | 5373 | struct type *type = |
4c4b4cd2 | 5374 | ada_lookup_struct_elt_type (outer_type, name, 1, 1, NULL); |
14f9c5c9 AS |
5375 | if (type == NULL) |
5376 | return builtin_type_int; | |
5377 | else | |
5378 | return type; | |
5379 | } | |
5380 | ||
4c4b4cd2 | 5381 | /* Assuming that TYPE is the type of a variant wrapper, and FIELD_NUM is a |
14f9c5c9 | 5382 | valid field number within it, returns 1 iff field FIELD_NUM of TYPE |
4c4b4cd2 | 5383 | represents a 'when others' clause; otherwise 0. */ |
14f9c5c9 AS |
5384 | |
5385 | int | |
ebf56fd3 | 5386 | ada_is_others_clause (struct type *type, int field_num) |
14f9c5c9 | 5387 | { |
d2e4a39e | 5388 | const char *name = TYPE_FIELD_NAME (type, field_num); |
14f9c5c9 AS |
5389 | return (name != NULL && name[0] == 'O'); |
5390 | } | |
5391 | ||
5392 | /* Assuming that TYPE0 is the type of the variant part of a record, | |
4c4b4cd2 PH |
5393 | returns the name of the discriminant controlling the variant. |
5394 | The value is valid until the next call to ada_variant_discrim_name. */ | |
14f9c5c9 | 5395 | |
d2e4a39e | 5396 | char * |
ebf56fd3 | 5397 | ada_variant_discrim_name (struct type *type0) |
14f9c5c9 | 5398 | { |
d2e4a39e | 5399 | static char *result = NULL; |
14f9c5c9 | 5400 | static size_t result_len = 0; |
d2e4a39e AS |
5401 | struct type *type; |
5402 | const char *name; | |
5403 | const char *discrim_end; | |
5404 | const char *discrim_start; | |
14f9c5c9 AS |
5405 | |
5406 | if (TYPE_CODE (type0) == TYPE_CODE_PTR) | |
5407 | type = TYPE_TARGET_TYPE (type0); | |
5408 | else | |
5409 | type = type0; | |
5410 | ||
5411 | name = ada_type_name (type); | |
5412 | ||
5413 | if (name == NULL || name[0] == '\000') | |
5414 | return ""; | |
5415 | ||
5416 | for (discrim_end = name + strlen (name) - 6; discrim_end != name; | |
5417 | discrim_end -= 1) | |
5418 | { | |
4c4b4cd2 PH |
5419 | if (strncmp (discrim_end, "___XVN", 6) == 0) |
5420 | break; | |
14f9c5c9 AS |
5421 | } |
5422 | if (discrim_end == name) | |
5423 | return ""; | |
5424 | ||
d2e4a39e | 5425 | for (discrim_start = discrim_end; discrim_start != name + 3; |
14f9c5c9 AS |
5426 | discrim_start -= 1) |
5427 | { | |
d2e4a39e | 5428 | if (discrim_start == name + 1) |
4c4b4cd2 | 5429 | return ""; |
76a01679 | 5430 | if ((discrim_start > name + 3 |
4c4b4cd2 PH |
5431 | && strncmp (discrim_start - 3, "___", 3) == 0) |
5432 | || discrim_start[-1] == '.') | |
5433 | break; | |
14f9c5c9 AS |
5434 | } |
5435 | ||
5436 | GROW_VECT (result, result_len, discrim_end - discrim_start + 1); | |
5437 | strncpy (result, discrim_start, discrim_end - discrim_start); | |
d2e4a39e | 5438 | result[discrim_end - discrim_start] = '\0'; |
14f9c5c9 AS |
5439 | return result; |
5440 | } | |
5441 | ||
4c4b4cd2 PH |
5442 | /* Scan STR for a subtype-encoded number, beginning at position K. |
5443 | Put the position of the character just past the number scanned in | |
5444 | *NEW_K, if NEW_K!=NULL. Put the scanned number in *R, if R!=NULL. | |
5445 | Return 1 if there was a valid number at the given position, and 0 | |
5446 | otherwise. A "subtype-encoded" number consists of the absolute value | |
5447 | in decimal, followed by the letter 'm' to indicate a negative number. | |
5448 | Assumes 0m does not occur. */ | |
14f9c5c9 AS |
5449 | |
5450 | int | |
d2e4a39e | 5451 | ada_scan_number (const char str[], int k, LONGEST * R, int *new_k) |
14f9c5c9 AS |
5452 | { |
5453 | ULONGEST RU; | |
5454 | ||
d2e4a39e | 5455 | if (!isdigit (str[k])) |
14f9c5c9 AS |
5456 | return 0; |
5457 | ||
4c4b4cd2 | 5458 | /* Do it the hard way so as not to make any assumption about |
14f9c5c9 | 5459 | the relationship of unsigned long (%lu scan format code) and |
4c4b4cd2 | 5460 | LONGEST. */ |
14f9c5c9 AS |
5461 | RU = 0; |
5462 | while (isdigit (str[k])) | |
5463 | { | |
d2e4a39e | 5464 | RU = RU * 10 + (str[k] - '0'); |
14f9c5c9 AS |
5465 | k += 1; |
5466 | } | |
5467 | ||
d2e4a39e | 5468 | if (str[k] == 'm') |
14f9c5c9 AS |
5469 | { |
5470 | if (R != NULL) | |
4c4b4cd2 | 5471 | *R = (-(LONGEST) (RU - 1)) - 1; |
14f9c5c9 AS |
5472 | k += 1; |
5473 | } | |
5474 | else if (R != NULL) | |
5475 | *R = (LONGEST) RU; | |
5476 | ||
4c4b4cd2 | 5477 | /* NOTE on the above: Technically, C does not say what the results of |
14f9c5c9 AS |
5478 | - (LONGEST) RU or (LONGEST) -RU are for RU == largest positive |
5479 | number representable as a LONGEST (although either would probably work | |
5480 | in most implementations). When RU>0, the locution in the then branch | |
4c4b4cd2 | 5481 | above is always equivalent to the negative of RU. */ |
14f9c5c9 AS |
5482 | |
5483 | if (new_k != NULL) | |
5484 | *new_k = k; | |
5485 | return 1; | |
5486 | } | |
5487 | ||
4c4b4cd2 PH |
5488 | /* Assuming that TYPE is a variant part wrapper type (a VARIANTS field), |
5489 | and FIELD_NUM is a valid field number within it, returns 1 iff VAL is | |
5490 | in the range encoded by field FIELD_NUM of TYPE; otherwise 0. */ | |
14f9c5c9 | 5491 | |
d2e4a39e | 5492 | int |
ebf56fd3 | 5493 | ada_in_variant (LONGEST val, struct type *type, int field_num) |
14f9c5c9 | 5494 | { |
d2e4a39e | 5495 | const char *name = TYPE_FIELD_NAME (type, field_num); |
14f9c5c9 AS |
5496 | int p; |
5497 | ||
5498 | p = 0; | |
5499 | while (1) | |
5500 | { | |
d2e4a39e | 5501 | switch (name[p]) |
4c4b4cd2 PH |
5502 | { |
5503 | case '\0': | |
5504 | return 0; | |
5505 | case 'S': | |
5506 | { | |
5507 | LONGEST W; | |
5508 | if (!ada_scan_number (name, p + 1, &W, &p)) | |
5509 | return 0; | |
5510 | if (val == W) | |
5511 | return 1; | |
5512 | break; | |
5513 | } | |
5514 | case 'R': | |
5515 | { | |
5516 | LONGEST L, U; | |
5517 | if (!ada_scan_number (name, p + 1, &L, &p) | |
5518 | || name[p] != 'T' || !ada_scan_number (name, p + 1, &U, &p)) | |
5519 | return 0; | |
5520 | if (val >= L && val <= U) | |
5521 | return 1; | |
5522 | break; | |
5523 | } | |
5524 | case 'O': | |
5525 | return 1; | |
5526 | default: | |
5527 | return 0; | |
5528 | } | |
5529 | } | |
5530 | } | |
5531 | ||
5532 | /* FIXME: Lots of redundancy below. Try to consolidate. */ | |
5533 | ||
5534 | /* Given a value ARG1 (offset by OFFSET bytes) of a struct or union type | |
5535 | ARG_TYPE, extract and return the value of one of its (non-static) | |
5536 | fields. FIELDNO says which field. Differs from value_primitive_field | |
5537 | only in that it can handle packed values of arbitrary type. */ | |
14f9c5c9 | 5538 | |
4c4b4cd2 | 5539 | static struct value * |
d2e4a39e | 5540 | ada_value_primitive_field (struct value *arg1, int offset, int fieldno, |
4c4b4cd2 | 5541 | struct type *arg_type) |
14f9c5c9 | 5542 | { |
14f9c5c9 AS |
5543 | struct type *type; |
5544 | ||
61ee279c | 5545 | arg_type = ada_check_typedef (arg_type); |
14f9c5c9 AS |
5546 | type = TYPE_FIELD_TYPE (arg_type, fieldno); |
5547 | ||
4c4b4cd2 | 5548 | /* Handle packed fields. */ |
14f9c5c9 AS |
5549 | |
5550 | if (TYPE_FIELD_BITSIZE (arg_type, fieldno) != 0) | |
5551 | { | |
5552 | int bit_pos = TYPE_FIELD_BITPOS (arg_type, fieldno); | |
5553 | int bit_size = TYPE_FIELD_BITSIZE (arg_type, fieldno); | |
d2e4a39e | 5554 | |
0fd88904 | 5555 | return ada_value_primitive_packed_val (arg1, value_contents (arg1), |
4c4b4cd2 PH |
5556 | offset + bit_pos / 8, |
5557 | bit_pos % 8, bit_size, type); | |
14f9c5c9 AS |
5558 | } |
5559 | else | |
5560 | return value_primitive_field (arg1, offset, fieldno, arg_type); | |
5561 | } | |
5562 | ||
52ce6436 PH |
5563 | /* Find field with name NAME in object of type TYPE. If found, |
5564 | set the following for each argument that is non-null: | |
5565 | - *FIELD_TYPE_P to the field's type; | |
5566 | - *BYTE_OFFSET_P to OFFSET + the byte offset of the field within | |
5567 | an object of that type; | |
5568 | - *BIT_OFFSET_P to the bit offset modulo byte size of the field; | |
5569 | - *BIT_SIZE_P to its size in bits if the field is packed, and | |
5570 | 0 otherwise; | |
5571 | If INDEX_P is non-null, increment *INDEX_P by the number of source-visible | |
5572 | fields up to but not including the desired field, or by the total | |
5573 | number of fields if not found. A NULL value of NAME never | |
5574 | matches; the function just counts visible fields in this case. | |
5575 | ||
5576 | Returns 1 if found, 0 otherwise. */ | |
5577 | ||
4c4b4cd2 | 5578 | static int |
76a01679 JB |
5579 | find_struct_field (char *name, struct type *type, int offset, |
5580 | struct type **field_type_p, | |
52ce6436 PH |
5581 | int *byte_offset_p, int *bit_offset_p, int *bit_size_p, |
5582 | int *index_p) | |
4c4b4cd2 PH |
5583 | { |
5584 | int i; | |
5585 | ||
61ee279c | 5586 | type = ada_check_typedef (type); |
76a01679 | 5587 | |
52ce6436 PH |
5588 | if (field_type_p != NULL) |
5589 | *field_type_p = NULL; | |
5590 | if (byte_offset_p != NULL) | |
d5d6fca5 | 5591 | *byte_offset_p = 0; |
52ce6436 PH |
5592 | if (bit_offset_p != NULL) |
5593 | *bit_offset_p = 0; | |
5594 | if (bit_size_p != NULL) | |
5595 | *bit_size_p = 0; | |
5596 | ||
5597 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
4c4b4cd2 PH |
5598 | { |
5599 | int bit_pos = TYPE_FIELD_BITPOS (type, i); | |
5600 | int fld_offset = offset + bit_pos / 8; | |
5601 | char *t_field_name = TYPE_FIELD_NAME (type, i); | |
76a01679 | 5602 | |
4c4b4cd2 PH |
5603 | if (t_field_name == NULL) |
5604 | continue; | |
5605 | ||
52ce6436 | 5606 | else if (name != NULL && field_name_match (t_field_name, name)) |
76a01679 JB |
5607 | { |
5608 | int bit_size = TYPE_FIELD_BITSIZE (type, i); | |
52ce6436 PH |
5609 | if (field_type_p != NULL) |
5610 | *field_type_p = TYPE_FIELD_TYPE (type, i); | |
5611 | if (byte_offset_p != NULL) | |
5612 | *byte_offset_p = fld_offset; | |
5613 | if (bit_offset_p != NULL) | |
5614 | *bit_offset_p = bit_pos % 8; | |
5615 | if (bit_size_p != NULL) | |
5616 | *bit_size_p = bit_size; | |
76a01679 JB |
5617 | return 1; |
5618 | } | |
4c4b4cd2 PH |
5619 | else if (ada_is_wrapper_field (type, i)) |
5620 | { | |
52ce6436 PH |
5621 | if (find_struct_field (name, TYPE_FIELD_TYPE (type, i), fld_offset, |
5622 | field_type_p, byte_offset_p, bit_offset_p, | |
5623 | bit_size_p, index_p)) | |
76a01679 JB |
5624 | return 1; |
5625 | } | |
4c4b4cd2 PH |
5626 | else if (ada_is_variant_part (type, i)) |
5627 | { | |
52ce6436 PH |
5628 | /* PNH: Wait. Do we ever execute this section, or is ARG always of |
5629 | fixed type?? */ | |
4c4b4cd2 | 5630 | int j; |
52ce6436 PH |
5631 | struct type *field_type |
5632 | = ada_check_typedef (TYPE_FIELD_TYPE (type, i)); | |
4c4b4cd2 | 5633 | |
52ce6436 | 5634 | for (j = 0; j < TYPE_NFIELDS (field_type); j += 1) |
4c4b4cd2 | 5635 | { |
76a01679 JB |
5636 | if (find_struct_field (name, TYPE_FIELD_TYPE (field_type, j), |
5637 | fld_offset | |
5638 | + TYPE_FIELD_BITPOS (field_type, j) / 8, | |
5639 | field_type_p, byte_offset_p, | |
52ce6436 | 5640 | bit_offset_p, bit_size_p, index_p)) |
76a01679 | 5641 | return 1; |
4c4b4cd2 PH |
5642 | } |
5643 | } | |
52ce6436 PH |
5644 | else if (index_p != NULL) |
5645 | *index_p += 1; | |
4c4b4cd2 PH |
5646 | } |
5647 | return 0; | |
5648 | } | |
5649 | ||
52ce6436 | 5650 | /* Number of user-visible fields in record type TYPE. */ |
4c4b4cd2 | 5651 | |
52ce6436 PH |
5652 | static int |
5653 | num_visible_fields (struct type *type) | |
5654 | { | |
5655 | int n; | |
5656 | n = 0; | |
5657 | find_struct_field (NULL, type, 0, NULL, NULL, NULL, NULL, &n); | |
5658 | return n; | |
5659 | } | |
14f9c5c9 | 5660 | |
4c4b4cd2 | 5661 | /* Look for a field NAME in ARG. Adjust the address of ARG by OFFSET bytes, |
14f9c5c9 AS |
5662 | and search in it assuming it has (class) type TYPE. |
5663 | If found, return value, else return NULL. | |
5664 | ||
4c4b4cd2 | 5665 | Searches recursively through wrapper fields (e.g., '_parent'). */ |
14f9c5c9 | 5666 | |
4c4b4cd2 | 5667 | static struct value * |
d2e4a39e | 5668 | ada_search_struct_field (char *name, struct value *arg, int offset, |
4c4b4cd2 | 5669 | struct type *type) |
14f9c5c9 AS |
5670 | { |
5671 | int i; | |
61ee279c | 5672 | type = ada_check_typedef (type); |
14f9c5c9 | 5673 | |
52ce6436 | 5674 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) |
14f9c5c9 AS |
5675 | { |
5676 | char *t_field_name = TYPE_FIELD_NAME (type, i); | |
5677 | ||
5678 | if (t_field_name == NULL) | |
4c4b4cd2 | 5679 | continue; |
14f9c5c9 AS |
5680 | |
5681 | else if (field_name_match (t_field_name, name)) | |
4c4b4cd2 | 5682 | return ada_value_primitive_field (arg, offset, i, type); |
14f9c5c9 AS |
5683 | |
5684 | else if (ada_is_wrapper_field (type, i)) | |
4c4b4cd2 | 5685 | { |
06d5cf63 JB |
5686 | struct value *v = /* Do not let indent join lines here. */ |
5687 | ada_search_struct_field (name, arg, | |
5688 | offset + TYPE_FIELD_BITPOS (type, i) / 8, | |
5689 | TYPE_FIELD_TYPE (type, i)); | |
4c4b4cd2 PH |
5690 | if (v != NULL) |
5691 | return v; | |
5692 | } | |
14f9c5c9 AS |
5693 | |
5694 | else if (ada_is_variant_part (type, i)) | |
4c4b4cd2 | 5695 | { |
52ce6436 | 5696 | /* PNH: Do we ever get here? See find_struct_field. */ |
4c4b4cd2 | 5697 | int j; |
61ee279c | 5698 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type, i)); |
4c4b4cd2 PH |
5699 | int var_offset = offset + TYPE_FIELD_BITPOS (type, i) / 8; |
5700 | ||
52ce6436 | 5701 | for (j = 0; j < TYPE_NFIELDS (field_type); j += 1) |
4c4b4cd2 | 5702 | { |
06d5cf63 JB |
5703 | struct value *v = ada_search_struct_field /* Force line break. */ |
5704 | (name, arg, | |
5705 | var_offset + TYPE_FIELD_BITPOS (field_type, j) / 8, | |
5706 | TYPE_FIELD_TYPE (field_type, j)); | |
4c4b4cd2 PH |
5707 | if (v != NULL) |
5708 | return v; | |
5709 | } | |
5710 | } | |
14f9c5c9 AS |
5711 | } |
5712 | return NULL; | |
5713 | } | |
d2e4a39e | 5714 | |
52ce6436 PH |
5715 | static struct value *ada_index_struct_field_1 (int *, struct value *, |
5716 | int, struct type *); | |
5717 | ||
5718 | ||
5719 | /* Return field #INDEX in ARG, where the index is that returned by | |
5720 | * find_struct_field through its INDEX_P argument. Adjust the address | |
5721 | * of ARG by OFFSET bytes, and search in it assuming it has (class) type TYPE. | |
5722 | * If found, return value, else return NULL. */ | |
5723 | ||
5724 | static struct value * | |
5725 | ada_index_struct_field (int index, struct value *arg, int offset, | |
5726 | struct type *type) | |
5727 | { | |
5728 | return ada_index_struct_field_1 (&index, arg, offset, type); | |
5729 | } | |
5730 | ||
5731 | ||
5732 | /* Auxiliary function for ada_index_struct_field. Like | |
5733 | * ada_index_struct_field, but takes index from *INDEX_P and modifies | |
5734 | * *INDEX_P. */ | |
5735 | ||
5736 | static struct value * | |
5737 | ada_index_struct_field_1 (int *index_p, struct value *arg, int offset, | |
5738 | struct type *type) | |
5739 | { | |
5740 | int i; | |
5741 | type = ada_check_typedef (type); | |
5742 | ||
5743 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
5744 | { | |
5745 | if (TYPE_FIELD_NAME (type, i) == NULL) | |
5746 | continue; | |
5747 | else if (ada_is_wrapper_field (type, i)) | |
5748 | { | |
5749 | struct value *v = /* Do not let indent join lines here. */ | |
5750 | ada_index_struct_field_1 (index_p, arg, | |
5751 | offset + TYPE_FIELD_BITPOS (type, i) / 8, | |
5752 | TYPE_FIELD_TYPE (type, i)); | |
5753 | if (v != NULL) | |
5754 | return v; | |
5755 | } | |
5756 | ||
5757 | else if (ada_is_variant_part (type, i)) | |
5758 | { | |
5759 | /* PNH: Do we ever get here? See ada_search_struct_field, | |
5760 | find_struct_field. */ | |
5761 | error (_("Cannot assign this kind of variant record")); | |
5762 | } | |
5763 | else if (*index_p == 0) | |
5764 | return ada_value_primitive_field (arg, offset, i, type); | |
5765 | else | |
5766 | *index_p -= 1; | |
5767 | } | |
5768 | return NULL; | |
5769 | } | |
5770 | ||
4c4b4cd2 PH |
5771 | /* Given ARG, a value of type (pointer or reference to a)* |
5772 | structure/union, extract the component named NAME from the ultimate | |
5773 | target structure/union and return it as a value with its | |
5774 | appropriate type. If ARG is a pointer or reference and the field | |
5775 | is not packed, returns a reference to the field, otherwise the | |
5776 | value of the field (an lvalue if ARG is an lvalue). | |
14f9c5c9 | 5777 | |
4c4b4cd2 PH |
5778 | The routine searches for NAME among all members of the structure itself |
5779 | and (recursively) among all members of any wrapper members | |
14f9c5c9 AS |
5780 | (e.g., '_parent'). |
5781 | ||
03ee6b2e PH |
5782 | If NO_ERR, then simply return NULL in case of error, rather than |
5783 | calling error. */ | |
14f9c5c9 | 5784 | |
d2e4a39e | 5785 | struct value * |
03ee6b2e | 5786 | ada_value_struct_elt (struct value *arg, char *name, int no_err) |
14f9c5c9 | 5787 | { |
4c4b4cd2 | 5788 | struct type *t, *t1; |
d2e4a39e | 5789 | struct value *v; |
14f9c5c9 | 5790 | |
4c4b4cd2 | 5791 | v = NULL; |
df407dfe | 5792 | t1 = t = ada_check_typedef (value_type (arg)); |
4c4b4cd2 PH |
5793 | if (TYPE_CODE (t) == TYPE_CODE_REF) |
5794 | { | |
5795 | t1 = TYPE_TARGET_TYPE (t); | |
5796 | if (t1 == NULL) | |
03ee6b2e | 5797 | goto BadValue; |
61ee279c | 5798 | t1 = ada_check_typedef (t1); |
4c4b4cd2 | 5799 | if (TYPE_CODE (t1) == TYPE_CODE_PTR) |
76a01679 | 5800 | { |
994b9211 | 5801 | arg = coerce_ref (arg); |
76a01679 JB |
5802 | t = t1; |
5803 | } | |
4c4b4cd2 | 5804 | } |
14f9c5c9 | 5805 | |
4c4b4cd2 PH |
5806 | while (TYPE_CODE (t) == TYPE_CODE_PTR) |
5807 | { | |
5808 | t1 = TYPE_TARGET_TYPE (t); | |
5809 | if (t1 == NULL) | |
03ee6b2e | 5810 | goto BadValue; |
61ee279c | 5811 | t1 = ada_check_typedef (t1); |
4c4b4cd2 | 5812 | if (TYPE_CODE (t1) == TYPE_CODE_PTR) |
76a01679 JB |
5813 | { |
5814 | arg = value_ind (arg); | |
5815 | t = t1; | |
5816 | } | |
4c4b4cd2 | 5817 | else |
76a01679 | 5818 | break; |
4c4b4cd2 | 5819 | } |
14f9c5c9 | 5820 | |
4c4b4cd2 | 5821 | if (TYPE_CODE (t1) != TYPE_CODE_STRUCT && TYPE_CODE (t1) != TYPE_CODE_UNION) |
03ee6b2e | 5822 | goto BadValue; |
14f9c5c9 | 5823 | |
4c4b4cd2 PH |
5824 | if (t1 == t) |
5825 | v = ada_search_struct_field (name, arg, 0, t); | |
5826 | else | |
5827 | { | |
5828 | int bit_offset, bit_size, byte_offset; | |
5829 | struct type *field_type; | |
5830 | CORE_ADDR address; | |
5831 | ||
76a01679 JB |
5832 | if (TYPE_CODE (t) == TYPE_CODE_PTR) |
5833 | address = value_as_address (arg); | |
4c4b4cd2 | 5834 | else |
0fd88904 | 5835 | address = unpack_pointer (t, value_contents (arg)); |
14f9c5c9 | 5836 | |
4c4b4cd2 | 5837 | t1 = ada_to_fixed_type (ada_get_base_type (t1), NULL, address, NULL); |
76a01679 JB |
5838 | if (find_struct_field (name, t1, 0, |
5839 | &field_type, &byte_offset, &bit_offset, | |
52ce6436 | 5840 | &bit_size, NULL)) |
76a01679 JB |
5841 | { |
5842 | if (bit_size != 0) | |
5843 | { | |
714e53ab PH |
5844 | if (TYPE_CODE (t) == TYPE_CODE_REF) |
5845 | arg = ada_coerce_ref (arg); | |
5846 | else | |
5847 | arg = ada_value_ind (arg); | |
76a01679 JB |
5848 | v = ada_value_primitive_packed_val (arg, NULL, byte_offset, |
5849 | bit_offset, bit_size, | |
5850 | field_type); | |
5851 | } | |
5852 | else | |
5853 | v = value_from_pointer (lookup_reference_type (field_type), | |
5854 | address + byte_offset); | |
5855 | } | |
5856 | } | |
5857 | ||
03ee6b2e PH |
5858 | if (v != NULL || no_err) |
5859 | return v; | |
5860 | else | |
323e0a4a | 5861 | error (_("There is no member named %s."), name); |
14f9c5c9 | 5862 | |
03ee6b2e PH |
5863 | BadValue: |
5864 | if (no_err) | |
5865 | return NULL; | |
5866 | else | |
5867 | error (_("Attempt to extract a component of a value that is not a record.")); | |
14f9c5c9 AS |
5868 | } |
5869 | ||
5870 | /* Given a type TYPE, look up the type of the component of type named NAME. | |
4c4b4cd2 PH |
5871 | If DISPP is non-null, add its byte displacement from the beginning of a |
5872 | structure (pointed to by a value) of type TYPE to *DISPP (does not | |
14f9c5c9 AS |
5873 | work for packed fields). |
5874 | ||
5875 | Matches any field whose name has NAME as a prefix, possibly | |
4c4b4cd2 | 5876 | followed by "___". |
14f9c5c9 | 5877 | |
4c4b4cd2 PH |
5878 | TYPE can be either a struct or union. If REFOK, TYPE may also |
5879 | be a (pointer or reference)+ to a struct or union, and the | |
5880 | ultimate target type will be searched. | |
14f9c5c9 AS |
5881 | |
5882 | Looks recursively into variant clauses and parent types. | |
5883 | ||
4c4b4cd2 PH |
5884 | If NOERR is nonzero, return NULL if NAME is not suitably defined or |
5885 | TYPE is not a type of the right kind. */ | |
14f9c5c9 | 5886 | |
4c4b4cd2 | 5887 | static struct type * |
76a01679 JB |
5888 | ada_lookup_struct_elt_type (struct type *type, char *name, int refok, |
5889 | int noerr, int *dispp) | |
14f9c5c9 AS |
5890 | { |
5891 | int i; | |
5892 | ||
5893 | if (name == NULL) | |
5894 | goto BadName; | |
5895 | ||
76a01679 | 5896 | if (refok && type != NULL) |
4c4b4cd2 PH |
5897 | while (1) |
5898 | { | |
61ee279c | 5899 | type = ada_check_typedef (type); |
76a01679 JB |
5900 | if (TYPE_CODE (type) != TYPE_CODE_PTR |
5901 | && TYPE_CODE (type) != TYPE_CODE_REF) | |
5902 | break; | |
5903 | type = TYPE_TARGET_TYPE (type); | |
4c4b4cd2 | 5904 | } |
14f9c5c9 | 5905 | |
76a01679 | 5906 | if (type == NULL |
1265e4aa JB |
5907 | || (TYPE_CODE (type) != TYPE_CODE_STRUCT |
5908 | && TYPE_CODE (type) != TYPE_CODE_UNION)) | |
14f9c5c9 | 5909 | { |
4c4b4cd2 | 5910 | if (noerr) |
76a01679 | 5911 | return NULL; |
4c4b4cd2 | 5912 | else |
76a01679 JB |
5913 | { |
5914 | target_terminal_ours (); | |
5915 | gdb_flush (gdb_stdout); | |
323e0a4a AC |
5916 | if (type == NULL) |
5917 | error (_("Type (null) is not a structure or union type")); | |
5918 | else | |
5919 | { | |
5920 | /* XXX: type_sprint */ | |
5921 | fprintf_unfiltered (gdb_stderr, _("Type ")); | |
5922 | type_print (type, "", gdb_stderr, -1); | |
5923 | error (_(" is not a structure or union type")); | |
5924 | } | |
76a01679 | 5925 | } |
14f9c5c9 AS |
5926 | } |
5927 | ||
5928 | type = to_static_fixed_type (type); | |
5929 | ||
5930 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
5931 | { | |
5932 | char *t_field_name = TYPE_FIELD_NAME (type, i); | |
5933 | struct type *t; | |
5934 | int disp; | |
d2e4a39e | 5935 | |
14f9c5c9 | 5936 | if (t_field_name == NULL) |
4c4b4cd2 | 5937 | continue; |
14f9c5c9 AS |
5938 | |
5939 | else if (field_name_match (t_field_name, name)) | |
4c4b4cd2 PH |
5940 | { |
5941 | if (dispp != NULL) | |
5942 | *dispp += TYPE_FIELD_BITPOS (type, i) / 8; | |
61ee279c | 5943 | return ada_check_typedef (TYPE_FIELD_TYPE (type, i)); |
4c4b4cd2 | 5944 | } |
14f9c5c9 AS |
5945 | |
5946 | else if (ada_is_wrapper_field (type, i)) | |
4c4b4cd2 PH |
5947 | { |
5948 | disp = 0; | |
5949 | t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, | |
5950 | 0, 1, &disp); | |
5951 | if (t != NULL) | |
5952 | { | |
5953 | if (dispp != NULL) | |
5954 | *dispp += disp + TYPE_FIELD_BITPOS (type, i) / 8; | |
5955 | return t; | |
5956 | } | |
5957 | } | |
14f9c5c9 AS |
5958 | |
5959 | else if (ada_is_variant_part (type, i)) | |
4c4b4cd2 PH |
5960 | { |
5961 | int j; | |
61ee279c | 5962 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type, i)); |
4c4b4cd2 PH |
5963 | |
5964 | for (j = TYPE_NFIELDS (field_type) - 1; j >= 0; j -= 1) | |
5965 | { | |
5966 | disp = 0; | |
5967 | t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (field_type, j), | |
5968 | name, 0, 1, &disp); | |
5969 | if (t != NULL) | |
5970 | { | |
5971 | if (dispp != NULL) | |
5972 | *dispp += disp + TYPE_FIELD_BITPOS (type, i) / 8; | |
5973 | return t; | |
5974 | } | |
5975 | } | |
5976 | } | |
14f9c5c9 AS |
5977 | |
5978 | } | |
5979 | ||
5980 | BadName: | |
d2e4a39e | 5981 | if (!noerr) |
14f9c5c9 AS |
5982 | { |
5983 | target_terminal_ours (); | |
5984 | gdb_flush (gdb_stdout); | |
323e0a4a AC |
5985 | if (name == NULL) |
5986 | { | |
5987 | /* XXX: type_sprint */ | |
5988 | fprintf_unfiltered (gdb_stderr, _("Type ")); | |
5989 | type_print (type, "", gdb_stderr, -1); | |
5990 | error (_(" has no component named <null>")); | |
5991 | } | |
5992 | else | |
5993 | { | |
5994 | /* XXX: type_sprint */ | |
5995 | fprintf_unfiltered (gdb_stderr, _("Type ")); | |
5996 | type_print (type, "", gdb_stderr, -1); | |
5997 | error (_(" has no component named %s"), name); | |
5998 | } | |
14f9c5c9 AS |
5999 | } |
6000 | ||
6001 | return NULL; | |
6002 | } | |
6003 | ||
6004 | /* Assuming that VAR_TYPE is the type of a variant part of a record (a union), | |
6005 | within a value of type OUTER_TYPE that is stored in GDB at | |
4c4b4cd2 PH |
6006 | OUTER_VALADDR, determine which variant clause (field number in VAR_TYPE, |
6007 | numbering from 0) is applicable. Returns -1 if none are. */ | |
14f9c5c9 | 6008 | |
d2e4a39e | 6009 | int |
ebf56fd3 | 6010 | ada_which_variant_applies (struct type *var_type, struct type *outer_type, |
fc1a4b47 | 6011 | const gdb_byte *outer_valaddr) |
14f9c5c9 AS |
6012 | { |
6013 | int others_clause; | |
6014 | int i; | |
6015 | int disp; | |
d2e4a39e AS |
6016 | struct type *discrim_type; |
6017 | char *discrim_name = ada_variant_discrim_name (var_type); | |
14f9c5c9 AS |
6018 | LONGEST discrim_val; |
6019 | ||
6020 | disp = 0; | |
d2e4a39e | 6021 | discrim_type = |
4c4b4cd2 | 6022 | ada_lookup_struct_elt_type (outer_type, discrim_name, 1, 1, &disp); |
14f9c5c9 AS |
6023 | if (discrim_type == NULL) |
6024 | return -1; | |
6025 | discrim_val = unpack_long (discrim_type, outer_valaddr + disp); | |
6026 | ||
6027 | others_clause = -1; | |
6028 | for (i = 0; i < TYPE_NFIELDS (var_type); i += 1) | |
6029 | { | |
6030 | if (ada_is_others_clause (var_type, i)) | |
4c4b4cd2 | 6031 | others_clause = i; |
14f9c5c9 | 6032 | else if (ada_in_variant (discrim_val, var_type, i)) |
4c4b4cd2 | 6033 | return i; |
14f9c5c9 AS |
6034 | } |
6035 | ||
6036 | return others_clause; | |
6037 | } | |
d2e4a39e | 6038 | \f |
14f9c5c9 AS |
6039 | |
6040 | ||
4c4b4cd2 | 6041 | /* Dynamic-Sized Records */ |
14f9c5c9 AS |
6042 | |
6043 | /* Strategy: The type ostensibly attached to a value with dynamic size | |
6044 | (i.e., a size that is not statically recorded in the debugging | |
6045 | data) does not accurately reflect the size or layout of the value. | |
6046 | Our strategy is to convert these values to values with accurate, | |
4c4b4cd2 | 6047 | conventional types that are constructed on the fly. */ |
14f9c5c9 AS |
6048 | |
6049 | /* There is a subtle and tricky problem here. In general, we cannot | |
6050 | determine the size of dynamic records without its data. However, | |
6051 | the 'struct value' data structure, which GDB uses to represent | |
6052 | quantities in the inferior process (the target), requires the size | |
6053 | of the type at the time of its allocation in order to reserve space | |
6054 | for GDB's internal copy of the data. That's why the | |
6055 | 'to_fixed_xxx_type' routines take (target) addresses as parameters, | |
4c4b4cd2 | 6056 | rather than struct value*s. |
14f9c5c9 AS |
6057 | |
6058 | However, GDB's internal history variables ($1, $2, etc.) are | |
6059 | struct value*s containing internal copies of the data that are not, in | |
6060 | general, the same as the data at their corresponding addresses in | |
6061 | the target. Fortunately, the types we give to these values are all | |
6062 | conventional, fixed-size types (as per the strategy described | |
6063 | above), so that we don't usually have to perform the | |
6064 | 'to_fixed_xxx_type' conversions to look at their values. | |
6065 | Unfortunately, there is one exception: if one of the internal | |
6066 | history variables is an array whose elements are unconstrained | |
6067 | records, then we will need to create distinct fixed types for each | |
6068 | element selected. */ | |
6069 | ||
6070 | /* The upshot of all of this is that many routines take a (type, host | |
6071 | address, target address) triple as arguments to represent a value. | |
6072 | The host address, if non-null, is supposed to contain an internal | |
6073 | copy of the relevant data; otherwise, the program is to consult the | |
4c4b4cd2 | 6074 | target at the target address. */ |
14f9c5c9 AS |
6075 | |
6076 | /* Assuming that VAL0 represents a pointer value, the result of | |
6077 | dereferencing it. Differs from value_ind in its treatment of | |
4c4b4cd2 | 6078 | dynamic-sized types. */ |
14f9c5c9 | 6079 | |
d2e4a39e AS |
6080 | struct value * |
6081 | ada_value_ind (struct value *val0) | |
14f9c5c9 | 6082 | { |
d2e4a39e | 6083 | struct value *val = unwrap_value (value_ind (val0)); |
4c4b4cd2 | 6084 | return ada_to_fixed_value (val); |
14f9c5c9 AS |
6085 | } |
6086 | ||
6087 | /* The value resulting from dereferencing any "reference to" | |
4c4b4cd2 PH |
6088 | qualifiers on VAL0. */ |
6089 | ||
d2e4a39e AS |
6090 | static struct value * |
6091 | ada_coerce_ref (struct value *val0) | |
6092 | { | |
df407dfe | 6093 | if (TYPE_CODE (value_type (val0)) == TYPE_CODE_REF) |
d2e4a39e AS |
6094 | { |
6095 | struct value *val = val0; | |
994b9211 | 6096 | val = coerce_ref (val); |
d2e4a39e | 6097 | val = unwrap_value (val); |
4c4b4cd2 | 6098 | return ada_to_fixed_value (val); |
d2e4a39e AS |
6099 | } |
6100 | else | |
14f9c5c9 AS |
6101 | return val0; |
6102 | } | |
6103 | ||
6104 | /* Return OFF rounded upward if necessary to a multiple of | |
4c4b4cd2 | 6105 | ALIGNMENT (a power of 2). */ |
14f9c5c9 AS |
6106 | |
6107 | static unsigned int | |
ebf56fd3 | 6108 | align_value (unsigned int off, unsigned int alignment) |
14f9c5c9 AS |
6109 | { |
6110 | return (off + alignment - 1) & ~(alignment - 1); | |
6111 | } | |
6112 | ||
4c4b4cd2 | 6113 | /* Return the bit alignment required for field #F of template type TYPE. */ |
14f9c5c9 AS |
6114 | |
6115 | static unsigned int | |
ebf56fd3 | 6116 | field_alignment (struct type *type, int f) |
14f9c5c9 | 6117 | { |
d2e4a39e | 6118 | const char *name = TYPE_FIELD_NAME (type, f); |
64a1bf19 | 6119 | int len; |
14f9c5c9 AS |
6120 | int align_offset; |
6121 | ||
64a1bf19 JB |
6122 | /* The field name should never be null, unless the debugging information |
6123 | is somehow malformed. In this case, we assume the field does not | |
6124 | require any alignment. */ | |
6125 | if (name == NULL) | |
6126 | return 1; | |
6127 | ||
6128 | len = strlen (name); | |
6129 | ||
4c4b4cd2 PH |
6130 | if (!isdigit (name[len - 1])) |
6131 | return 1; | |
14f9c5c9 | 6132 | |
d2e4a39e | 6133 | if (isdigit (name[len - 2])) |
14f9c5c9 AS |
6134 | align_offset = len - 2; |
6135 | else | |
6136 | align_offset = len - 1; | |
6137 | ||
4c4b4cd2 | 6138 | if (align_offset < 7 || strncmp ("___XV", name + align_offset - 6, 5) != 0) |
14f9c5c9 AS |
6139 | return TARGET_CHAR_BIT; |
6140 | ||
4c4b4cd2 PH |
6141 | return atoi (name + align_offset) * TARGET_CHAR_BIT; |
6142 | } | |
6143 | ||
6144 | /* Find a symbol named NAME. Ignores ambiguity. */ | |
6145 | ||
6146 | struct symbol * | |
6147 | ada_find_any_symbol (const char *name) | |
6148 | { | |
6149 | struct symbol *sym; | |
6150 | ||
6151 | sym = standard_lookup (name, get_selected_block (NULL), VAR_DOMAIN); | |
6152 | if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
6153 | return sym; | |
6154 | ||
6155 | sym = standard_lookup (name, NULL, STRUCT_DOMAIN); | |
6156 | return sym; | |
14f9c5c9 AS |
6157 | } |
6158 | ||
6159 | /* Find a type named NAME. Ignores ambiguity. */ | |
4c4b4cd2 | 6160 | |
d2e4a39e | 6161 | struct type * |
ebf56fd3 | 6162 | ada_find_any_type (const char *name) |
14f9c5c9 | 6163 | { |
4c4b4cd2 | 6164 | struct symbol *sym = ada_find_any_symbol (name); |
14f9c5c9 | 6165 | |
14f9c5c9 AS |
6166 | if (sym != NULL) |
6167 | return SYMBOL_TYPE (sym); | |
6168 | ||
6169 | return NULL; | |
6170 | } | |
6171 | ||
4c4b4cd2 PH |
6172 | /* Given a symbol NAME and its associated BLOCK, search all symbols |
6173 | for its ___XR counterpart, which is the ``renaming'' symbol | |
6174 | associated to NAME. Return this symbol if found, return | |
6175 | NULL otherwise. */ | |
6176 | ||
6177 | struct symbol * | |
6178 | ada_find_renaming_symbol (const char *name, struct block *block) | |
6179 | { | |
6180 | const struct symbol *function_sym = block_function (block); | |
6181 | char *rename; | |
6182 | ||
6183 | if (function_sym != NULL) | |
6184 | { | |
6185 | /* If the symbol is defined inside a function, NAME is not fully | |
6186 | qualified. This means we need to prepend the function name | |
6187 | as well as adding the ``___XR'' suffix to build the name of | |
6188 | the associated renaming symbol. */ | |
6189 | char *function_name = SYMBOL_LINKAGE_NAME (function_sym); | |
529cad9c PH |
6190 | /* Function names sometimes contain suffixes used |
6191 | for instance to qualify nested subprograms. When building | |
6192 | the XR type name, we need to make sure that this suffix is | |
6193 | not included. So do not include any suffix in the function | |
6194 | name length below. */ | |
6195 | const int function_name_len = ada_name_prefix_len (function_name); | |
76a01679 JB |
6196 | const int rename_len = function_name_len + 2 /* "__" */ |
6197 | + strlen (name) + 6 /* "___XR\0" */ ; | |
4c4b4cd2 | 6198 | |
529cad9c PH |
6199 | /* Strip the suffix if necessary. */ |
6200 | function_name[function_name_len] = '\0'; | |
6201 | ||
4c4b4cd2 PH |
6202 | /* Library-level functions are a special case, as GNAT adds |
6203 | a ``_ada_'' prefix to the function name to avoid namespace | |
6204 | pollution. However, the renaming symbol themselves do not | |
6205 | have this prefix, so we need to skip this prefix if present. */ | |
6206 | if (function_name_len > 5 /* "_ada_" */ | |
6207 | && strstr (function_name, "_ada_") == function_name) | |
6208 | function_name = function_name + 5; | |
6209 | ||
6210 | rename = (char *) alloca (rename_len * sizeof (char)); | |
6211 | sprintf (rename, "%s__%s___XR", function_name, name); | |
6212 | } | |
6213 | else | |
6214 | { | |
6215 | const int rename_len = strlen (name) + 6; | |
6216 | rename = (char *) alloca (rename_len * sizeof (char)); | |
6217 | sprintf (rename, "%s___XR", name); | |
6218 | } | |
6219 | ||
6220 | return ada_find_any_symbol (rename); | |
6221 | } | |
6222 | ||
14f9c5c9 | 6223 | /* Because of GNAT encoding conventions, several GDB symbols may match a |
4c4b4cd2 | 6224 | given type name. If the type denoted by TYPE0 is to be preferred to |
14f9c5c9 | 6225 | that of TYPE1 for purposes of type printing, return non-zero; |
4c4b4cd2 PH |
6226 | otherwise return 0. */ |
6227 | ||
14f9c5c9 | 6228 | int |
d2e4a39e | 6229 | ada_prefer_type (struct type *type0, struct type *type1) |
14f9c5c9 AS |
6230 | { |
6231 | if (type1 == NULL) | |
6232 | return 1; | |
6233 | else if (type0 == NULL) | |
6234 | return 0; | |
6235 | else if (TYPE_CODE (type1) == TYPE_CODE_VOID) | |
6236 | return 1; | |
6237 | else if (TYPE_CODE (type0) == TYPE_CODE_VOID) | |
6238 | return 0; | |
4c4b4cd2 PH |
6239 | else if (TYPE_NAME (type1) == NULL && TYPE_NAME (type0) != NULL) |
6240 | return 1; | |
14f9c5c9 AS |
6241 | else if (ada_is_packed_array_type (type0)) |
6242 | return 1; | |
4c4b4cd2 PH |
6243 | else if (ada_is_array_descriptor_type (type0) |
6244 | && !ada_is_array_descriptor_type (type1)) | |
14f9c5c9 | 6245 | return 1; |
d2e4a39e | 6246 | else if (ada_renaming_type (type0) != NULL |
4c4b4cd2 | 6247 | && ada_renaming_type (type1) == NULL) |
14f9c5c9 AS |
6248 | return 1; |
6249 | return 0; | |
6250 | } | |
6251 | ||
6252 | /* The name of TYPE, which is either its TYPE_NAME, or, if that is | |
4c4b4cd2 PH |
6253 | null, its TYPE_TAG_NAME. Null if TYPE is null. */ |
6254 | ||
d2e4a39e AS |
6255 | char * |
6256 | ada_type_name (struct type *type) | |
14f9c5c9 | 6257 | { |
d2e4a39e | 6258 | if (type == NULL) |
14f9c5c9 AS |
6259 | return NULL; |
6260 | else if (TYPE_NAME (type) != NULL) | |
6261 | return TYPE_NAME (type); | |
6262 | else | |
6263 | return TYPE_TAG_NAME (type); | |
6264 | } | |
6265 | ||
6266 | /* Find a parallel type to TYPE whose name is formed by appending | |
4c4b4cd2 | 6267 | SUFFIX to the name of TYPE. */ |
14f9c5c9 | 6268 | |
d2e4a39e | 6269 | struct type * |
ebf56fd3 | 6270 | ada_find_parallel_type (struct type *type, const char *suffix) |
14f9c5c9 | 6271 | { |
d2e4a39e | 6272 | static char *name; |
14f9c5c9 | 6273 | static size_t name_len = 0; |
14f9c5c9 | 6274 | int len; |
d2e4a39e AS |
6275 | char *typename = ada_type_name (type); |
6276 | ||
14f9c5c9 AS |
6277 | if (typename == NULL) |
6278 | return NULL; | |
6279 | ||
6280 | len = strlen (typename); | |
6281 | ||
d2e4a39e | 6282 | GROW_VECT (name, name_len, len + strlen (suffix) + 1); |
14f9c5c9 AS |
6283 | |
6284 | strcpy (name, typename); | |
6285 | strcpy (name + len, suffix); | |
6286 | ||
6287 | return ada_find_any_type (name); | |
6288 | } | |
6289 | ||
6290 | ||
6291 | /* If TYPE is a variable-size record type, return the corresponding template | |
4c4b4cd2 | 6292 | type describing its fields. Otherwise, return NULL. */ |
14f9c5c9 | 6293 | |
d2e4a39e AS |
6294 | static struct type * |
6295 | dynamic_template_type (struct type *type) | |
14f9c5c9 | 6296 | { |
61ee279c | 6297 | type = ada_check_typedef (type); |
14f9c5c9 AS |
6298 | |
6299 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT | |
d2e4a39e | 6300 | || ada_type_name (type) == NULL) |
14f9c5c9 | 6301 | return NULL; |
d2e4a39e | 6302 | else |
14f9c5c9 AS |
6303 | { |
6304 | int len = strlen (ada_type_name (type)); | |
4c4b4cd2 PH |
6305 | if (len > 6 && strcmp (ada_type_name (type) + len - 6, "___XVE") == 0) |
6306 | return type; | |
14f9c5c9 | 6307 | else |
4c4b4cd2 | 6308 | return ada_find_parallel_type (type, "___XVE"); |
14f9c5c9 AS |
6309 | } |
6310 | } | |
6311 | ||
6312 | /* Assuming that TEMPL_TYPE is a union or struct type, returns | |
4c4b4cd2 | 6313 | non-zero iff field FIELD_NUM of TEMPL_TYPE has dynamic size. */ |
14f9c5c9 | 6314 | |
d2e4a39e AS |
6315 | static int |
6316 | is_dynamic_field (struct type *templ_type, int field_num) | |
14f9c5c9 AS |
6317 | { |
6318 | const char *name = TYPE_FIELD_NAME (templ_type, field_num); | |
d2e4a39e | 6319 | return name != NULL |
14f9c5c9 AS |
6320 | && TYPE_CODE (TYPE_FIELD_TYPE (templ_type, field_num)) == TYPE_CODE_PTR |
6321 | && strstr (name, "___XVL") != NULL; | |
6322 | } | |
6323 | ||
4c4b4cd2 PH |
6324 | /* The index of the variant field of TYPE, or -1 if TYPE does not |
6325 | represent a variant record type. */ | |
14f9c5c9 | 6326 | |
d2e4a39e | 6327 | static int |
4c4b4cd2 | 6328 | variant_field_index (struct type *type) |
14f9c5c9 AS |
6329 | { |
6330 | int f; | |
6331 | ||
4c4b4cd2 PH |
6332 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT) |
6333 | return -1; | |
6334 | ||
6335 | for (f = 0; f < TYPE_NFIELDS (type); f += 1) | |
6336 | { | |
6337 | if (ada_is_variant_part (type, f)) | |
6338 | return f; | |
6339 | } | |
6340 | return -1; | |
14f9c5c9 AS |
6341 | } |
6342 | ||
4c4b4cd2 PH |
6343 | /* A record type with no fields. */ |
6344 | ||
d2e4a39e AS |
6345 | static struct type * |
6346 | empty_record (struct objfile *objfile) | |
14f9c5c9 | 6347 | { |
d2e4a39e | 6348 | struct type *type = alloc_type (objfile); |
14f9c5c9 AS |
6349 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
6350 | TYPE_NFIELDS (type) = 0; | |
6351 | TYPE_FIELDS (type) = NULL; | |
6352 | TYPE_NAME (type) = "<empty>"; | |
6353 | TYPE_TAG_NAME (type) = NULL; | |
6354 | TYPE_FLAGS (type) = 0; | |
6355 | TYPE_LENGTH (type) = 0; | |
6356 | return type; | |
6357 | } | |
6358 | ||
6359 | /* An ordinary record type (with fixed-length fields) that describes | |
4c4b4cd2 PH |
6360 | the value of type TYPE at VALADDR or ADDRESS (see comments at |
6361 | the beginning of this section) VAL according to GNAT conventions. | |
6362 | DVAL0 should describe the (portion of a) record that contains any | |
df407dfe | 6363 | necessary discriminants. It should be NULL if value_type (VAL) is |
14f9c5c9 AS |
6364 | an outer-level type (i.e., as opposed to a branch of a variant.) A |
6365 | variant field (unless unchecked) is replaced by a particular branch | |
4c4b4cd2 | 6366 | of the variant. |
14f9c5c9 | 6367 | |
4c4b4cd2 PH |
6368 | If not KEEP_DYNAMIC_FIELDS, then all fields whose position or |
6369 | length are not statically known are discarded. As a consequence, | |
6370 | VALADDR, ADDRESS and DVAL0 are ignored. | |
6371 | ||
6372 | NOTE: Limitations: For now, we assume that dynamic fields and | |
6373 | variants occupy whole numbers of bytes. However, they need not be | |
6374 | byte-aligned. */ | |
6375 | ||
6376 | struct type * | |
10a2c479 | 6377 | ada_template_to_fixed_record_type_1 (struct type *type, |
fc1a4b47 | 6378 | const gdb_byte *valaddr, |
4c4b4cd2 PH |
6379 | CORE_ADDR address, struct value *dval0, |
6380 | int keep_dynamic_fields) | |
14f9c5c9 | 6381 | { |
d2e4a39e AS |
6382 | struct value *mark = value_mark (); |
6383 | struct value *dval; | |
6384 | struct type *rtype; | |
14f9c5c9 | 6385 | int nfields, bit_len; |
4c4b4cd2 | 6386 | int variant_field; |
14f9c5c9 | 6387 | long off; |
4c4b4cd2 | 6388 | int fld_bit_len, bit_incr; |
14f9c5c9 AS |
6389 | int f; |
6390 | ||
4c4b4cd2 PH |
6391 | /* Compute the number of fields in this record type that are going |
6392 | to be processed: unless keep_dynamic_fields, this includes only | |
6393 | fields whose position and length are static will be processed. */ | |
6394 | if (keep_dynamic_fields) | |
6395 | nfields = TYPE_NFIELDS (type); | |
6396 | else | |
6397 | { | |
6398 | nfields = 0; | |
76a01679 | 6399 | while (nfields < TYPE_NFIELDS (type) |
4c4b4cd2 PH |
6400 | && !ada_is_variant_part (type, nfields) |
6401 | && !is_dynamic_field (type, nfields)) | |
6402 | nfields++; | |
6403 | } | |
6404 | ||
14f9c5c9 AS |
6405 | rtype = alloc_type (TYPE_OBJFILE (type)); |
6406 | TYPE_CODE (rtype) = TYPE_CODE_STRUCT; | |
6407 | INIT_CPLUS_SPECIFIC (rtype); | |
6408 | TYPE_NFIELDS (rtype) = nfields; | |
d2e4a39e | 6409 | TYPE_FIELDS (rtype) = (struct field *) |
14f9c5c9 AS |
6410 | TYPE_ALLOC (rtype, nfields * sizeof (struct field)); |
6411 | memset (TYPE_FIELDS (rtype), 0, sizeof (struct field) * nfields); | |
6412 | TYPE_NAME (rtype) = ada_type_name (type); | |
6413 | TYPE_TAG_NAME (rtype) = NULL; | |
4c4b4cd2 | 6414 | TYPE_FLAGS (rtype) |= TYPE_FLAG_FIXED_INSTANCE; |
14f9c5c9 | 6415 | |
d2e4a39e AS |
6416 | off = 0; |
6417 | bit_len = 0; | |
4c4b4cd2 PH |
6418 | variant_field = -1; |
6419 | ||
14f9c5c9 AS |
6420 | for (f = 0; f < nfields; f += 1) |
6421 | { | |
6c038f32 PH |
6422 | off = align_value (off, field_alignment (type, f)) |
6423 | + TYPE_FIELD_BITPOS (type, f); | |
14f9c5c9 | 6424 | TYPE_FIELD_BITPOS (rtype, f) = off; |
d2e4a39e | 6425 | TYPE_FIELD_BITSIZE (rtype, f) = 0; |
14f9c5c9 | 6426 | |
d2e4a39e | 6427 | if (ada_is_variant_part (type, f)) |
4c4b4cd2 PH |
6428 | { |
6429 | variant_field = f; | |
6430 | fld_bit_len = bit_incr = 0; | |
6431 | } | |
14f9c5c9 | 6432 | else if (is_dynamic_field (type, f)) |
4c4b4cd2 PH |
6433 | { |
6434 | if (dval0 == NULL) | |
6435 | dval = value_from_contents_and_address (rtype, valaddr, address); | |
6436 | else | |
6437 | dval = dval0; | |
6438 | ||
6439 | TYPE_FIELD_TYPE (rtype, f) = | |
6440 | ada_to_fixed_type | |
6441 | (ada_get_base_type | |
6442 | (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, f))), | |
6443 | cond_offset_host (valaddr, off / TARGET_CHAR_BIT), | |
6444 | cond_offset_target (address, off / TARGET_CHAR_BIT), dval); | |
6445 | TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f); | |
6446 | bit_incr = fld_bit_len = | |
6447 | TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, f)) * TARGET_CHAR_BIT; | |
6448 | } | |
14f9c5c9 | 6449 | else |
4c4b4cd2 PH |
6450 | { |
6451 | TYPE_FIELD_TYPE (rtype, f) = TYPE_FIELD_TYPE (type, f); | |
6452 | TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f); | |
6453 | if (TYPE_FIELD_BITSIZE (type, f) > 0) | |
6454 | bit_incr = fld_bit_len = | |
6455 | TYPE_FIELD_BITSIZE (rtype, f) = TYPE_FIELD_BITSIZE (type, f); | |
6456 | else | |
6457 | bit_incr = fld_bit_len = | |
6458 | TYPE_LENGTH (TYPE_FIELD_TYPE (type, f)) * TARGET_CHAR_BIT; | |
6459 | } | |
14f9c5c9 | 6460 | if (off + fld_bit_len > bit_len) |
4c4b4cd2 | 6461 | bit_len = off + fld_bit_len; |
14f9c5c9 | 6462 | off += bit_incr; |
4c4b4cd2 PH |
6463 | TYPE_LENGTH (rtype) = |
6464 | align_value (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT; | |
14f9c5c9 | 6465 | } |
4c4b4cd2 PH |
6466 | |
6467 | /* We handle the variant part, if any, at the end because of certain | |
6468 | odd cases in which it is re-ordered so as NOT the last field of | |
6469 | the record. This can happen in the presence of representation | |
6470 | clauses. */ | |
6471 | if (variant_field >= 0) | |
6472 | { | |
6473 | struct type *branch_type; | |
6474 | ||
6475 | off = TYPE_FIELD_BITPOS (rtype, variant_field); | |
6476 | ||
6477 | if (dval0 == NULL) | |
6478 | dval = value_from_contents_and_address (rtype, valaddr, address); | |
6479 | else | |
6480 | dval = dval0; | |
6481 | ||
6482 | branch_type = | |
6483 | to_fixed_variant_branch_type | |
6484 | (TYPE_FIELD_TYPE (type, variant_field), | |
6485 | cond_offset_host (valaddr, off / TARGET_CHAR_BIT), | |
6486 | cond_offset_target (address, off / TARGET_CHAR_BIT), dval); | |
6487 | if (branch_type == NULL) | |
6488 | { | |
6489 | for (f = variant_field + 1; f < TYPE_NFIELDS (rtype); f += 1) | |
6490 | TYPE_FIELDS (rtype)[f - 1] = TYPE_FIELDS (rtype)[f]; | |
6491 | TYPE_NFIELDS (rtype) -= 1; | |
6492 | } | |
6493 | else | |
6494 | { | |
6495 | TYPE_FIELD_TYPE (rtype, variant_field) = branch_type; | |
6496 | TYPE_FIELD_NAME (rtype, variant_field) = "S"; | |
6497 | fld_bit_len = | |
6498 | TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, variant_field)) * | |
6499 | TARGET_CHAR_BIT; | |
6500 | if (off + fld_bit_len > bit_len) | |
6501 | bit_len = off + fld_bit_len; | |
6502 | TYPE_LENGTH (rtype) = | |
6503 | align_value (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT; | |
6504 | } | |
6505 | } | |
6506 | ||
714e53ab PH |
6507 | /* According to exp_dbug.ads, the size of TYPE for variable-size records |
6508 | should contain the alignment of that record, which should be a strictly | |
6509 | positive value. If null or negative, then something is wrong, most | |
6510 | probably in the debug info. In that case, we don't round up the size | |
6511 | of the resulting type. If this record is not part of another structure, | |
6512 | the current RTYPE length might be good enough for our purposes. */ | |
6513 | if (TYPE_LENGTH (type) <= 0) | |
6514 | { | |
323e0a4a AC |
6515 | if (TYPE_NAME (rtype)) |
6516 | warning (_("Invalid type size for `%s' detected: %d."), | |
6517 | TYPE_NAME (rtype), TYPE_LENGTH (type)); | |
6518 | else | |
6519 | warning (_("Invalid type size for <unnamed> detected: %d."), | |
6520 | TYPE_LENGTH (type)); | |
714e53ab PH |
6521 | } |
6522 | else | |
6523 | { | |
6524 | TYPE_LENGTH (rtype) = align_value (TYPE_LENGTH (rtype), | |
6525 | TYPE_LENGTH (type)); | |
6526 | } | |
14f9c5c9 AS |
6527 | |
6528 | value_free_to_mark (mark); | |
d2e4a39e | 6529 | if (TYPE_LENGTH (rtype) > varsize_limit) |
323e0a4a | 6530 | error (_("record type with dynamic size is larger than varsize-limit")); |
14f9c5c9 AS |
6531 | return rtype; |
6532 | } | |
6533 | ||
4c4b4cd2 PH |
6534 | /* As for ada_template_to_fixed_record_type_1 with KEEP_DYNAMIC_FIELDS |
6535 | of 1. */ | |
14f9c5c9 | 6536 | |
d2e4a39e | 6537 | static struct type * |
fc1a4b47 | 6538 | template_to_fixed_record_type (struct type *type, const gdb_byte *valaddr, |
4c4b4cd2 PH |
6539 | CORE_ADDR address, struct value *dval0) |
6540 | { | |
6541 | return ada_template_to_fixed_record_type_1 (type, valaddr, | |
6542 | address, dval0, 1); | |
6543 | } | |
6544 | ||
6545 | /* An ordinary record type in which ___XVL-convention fields and | |
6546 | ___XVU- and ___XVN-convention field types in TYPE0 are replaced with | |
6547 | static approximations, containing all possible fields. Uses | |
6548 | no runtime values. Useless for use in values, but that's OK, | |
6549 | since the results are used only for type determinations. Works on both | |
6550 | structs and unions. Representation note: to save space, we memorize | |
6551 | the result of this function in the TYPE_TARGET_TYPE of the | |
6552 | template type. */ | |
6553 | ||
6554 | static struct type * | |
6555 | template_to_static_fixed_type (struct type *type0) | |
14f9c5c9 AS |
6556 | { |
6557 | struct type *type; | |
6558 | int nfields; | |
6559 | int f; | |
6560 | ||
4c4b4cd2 PH |
6561 | if (TYPE_TARGET_TYPE (type0) != NULL) |
6562 | return TYPE_TARGET_TYPE (type0); | |
6563 | ||
6564 | nfields = TYPE_NFIELDS (type0); | |
6565 | type = type0; | |
14f9c5c9 AS |
6566 | |
6567 | for (f = 0; f < nfields; f += 1) | |
6568 | { | |
61ee279c | 6569 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type0, f)); |
4c4b4cd2 | 6570 | struct type *new_type; |
14f9c5c9 | 6571 | |
4c4b4cd2 PH |
6572 | if (is_dynamic_field (type0, f)) |
6573 | new_type = to_static_fixed_type (TYPE_TARGET_TYPE (field_type)); | |
14f9c5c9 | 6574 | else |
4c4b4cd2 PH |
6575 | new_type = to_static_fixed_type (field_type); |
6576 | if (type == type0 && new_type != field_type) | |
6577 | { | |
6578 | TYPE_TARGET_TYPE (type0) = type = alloc_type (TYPE_OBJFILE (type0)); | |
6579 | TYPE_CODE (type) = TYPE_CODE (type0); | |
6580 | INIT_CPLUS_SPECIFIC (type); | |
6581 | TYPE_NFIELDS (type) = nfields; | |
6582 | TYPE_FIELDS (type) = (struct field *) | |
6583 | TYPE_ALLOC (type, nfields * sizeof (struct field)); | |
6584 | memcpy (TYPE_FIELDS (type), TYPE_FIELDS (type0), | |
6585 | sizeof (struct field) * nfields); | |
6586 | TYPE_NAME (type) = ada_type_name (type0); | |
6587 | TYPE_TAG_NAME (type) = NULL; | |
6588 | TYPE_FLAGS (type) |= TYPE_FLAG_FIXED_INSTANCE; | |
6589 | TYPE_LENGTH (type) = 0; | |
6590 | } | |
6591 | TYPE_FIELD_TYPE (type, f) = new_type; | |
6592 | TYPE_FIELD_NAME (type, f) = TYPE_FIELD_NAME (type0, f); | |
14f9c5c9 | 6593 | } |
14f9c5c9 AS |
6594 | return type; |
6595 | } | |
6596 | ||
4c4b4cd2 PH |
6597 | /* Given an object of type TYPE whose contents are at VALADDR and |
6598 | whose address in memory is ADDRESS, returns a revision of TYPE -- | |
6599 | a non-dynamic-sized record with a variant part -- in which | |
6600 | the variant part is replaced with the appropriate branch. Looks | |
6601 | for discriminant values in DVAL0, which can be NULL if the record | |
6602 | contains the necessary discriminant values. */ | |
6603 | ||
d2e4a39e | 6604 | static struct type * |
fc1a4b47 | 6605 | to_record_with_fixed_variant_part (struct type *type, const gdb_byte *valaddr, |
4c4b4cd2 | 6606 | CORE_ADDR address, struct value *dval0) |
14f9c5c9 | 6607 | { |
d2e4a39e | 6608 | struct value *mark = value_mark (); |
4c4b4cd2 | 6609 | struct value *dval; |
d2e4a39e | 6610 | struct type *rtype; |
14f9c5c9 AS |
6611 | struct type *branch_type; |
6612 | int nfields = TYPE_NFIELDS (type); | |
4c4b4cd2 | 6613 | int variant_field = variant_field_index (type); |
14f9c5c9 | 6614 | |
4c4b4cd2 | 6615 | if (variant_field == -1) |
14f9c5c9 AS |
6616 | return type; |
6617 | ||
4c4b4cd2 PH |
6618 | if (dval0 == NULL) |
6619 | dval = value_from_contents_and_address (type, valaddr, address); | |
6620 | else | |
6621 | dval = dval0; | |
6622 | ||
14f9c5c9 AS |
6623 | rtype = alloc_type (TYPE_OBJFILE (type)); |
6624 | TYPE_CODE (rtype) = TYPE_CODE_STRUCT; | |
4c4b4cd2 PH |
6625 | INIT_CPLUS_SPECIFIC (rtype); |
6626 | TYPE_NFIELDS (rtype) = nfields; | |
d2e4a39e AS |
6627 | TYPE_FIELDS (rtype) = |
6628 | (struct field *) TYPE_ALLOC (rtype, nfields * sizeof (struct field)); | |
6629 | memcpy (TYPE_FIELDS (rtype), TYPE_FIELDS (type), | |
4c4b4cd2 | 6630 | sizeof (struct field) * nfields); |
14f9c5c9 AS |
6631 | TYPE_NAME (rtype) = ada_type_name (type); |
6632 | TYPE_TAG_NAME (rtype) = NULL; | |
4c4b4cd2 | 6633 | TYPE_FLAGS (rtype) |= TYPE_FLAG_FIXED_INSTANCE; |
14f9c5c9 AS |
6634 | TYPE_LENGTH (rtype) = TYPE_LENGTH (type); |
6635 | ||
4c4b4cd2 PH |
6636 | branch_type = to_fixed_variant_branch_type |
6637 | (TYPE_FIELD_TYPE (type, variant_field), | |
d2e4a39e | 6638 | cond_offset_host (valaddr, |
4c4b4cd2 PH |
6639 | TYPE_FIELD_BITPOS (type, variant_field) |
6640 | / TARGET_CHAR_BIT), | |
d2e4a39e | 6641 | cond_offset_target (address, |
4c4b4cd2 PH |
6642 | TYPE_FIELD_BITPOS (type, variant_field) |
6643 | / TARGET_CHAR_BIT), dval); | |
d2e4a39e | 6644 | if (branch_type == NULL) |
14f9c5c9 | 6645 | { |
4c4b4cd2 PH |
6646 | int f; |
6647 | for (f = variant_field + 1; f < nfields; f += 1) | |
6648 | TYPE_FIELDS (rtype)[f - 1] = TYPE_FIELDS (rtype)[f]; | |
14f9c5c9 | 6649 | TYPE_NFIELDS (rtype) -= 1; |
14f9c5c9 AS |
6650 | } |
6651 | else | |
6652 | { | |
4c4b4cd2 PH |
6653 | TYPE_FIELD_TYPE (rtype, variant_field) = branch_type; |
6654 | TYPE_FIELD_NAME (rtype, variant_field) = "S"; | |
6655 | TYPE_FIELD_BITSIZE (rtype, variant_field) = 0; | |
14f9c5c9 | 6656 | TYPE_LENGTH (rtype) += TYPE_LENGTH (branch_type); |
14f9c5c9 | 6657 | } |
4c4b4cd2 | 6658 | TYPE_LENGTH (rtype) -= TYPE_LENGTH (TYPE_FIELD_TYPE (type, variant_field)); |
d2e4a39e | 6659 | |
4c4b4cd2 | 6660 | value_free_to_mark (mark); |
14f9c5c9 AS |
6661 | return rtype; |
6662 | } | |
6663 | ||
6664 | /* An ordinary record type (with fixed-length fields) that describes | |
6665 | the value at (TYPE0, VALADDR, ADDRESS) [see explanation at | |
6666 | beginning of this section]. Any necessary discriminants' values | |
4c4b4cd2 PH |
6667 | should be in DVAL, a record value; it may be NULL if the object |
6668 | at ADDR itself contains any necessary discriminant values. | |
6669 | Additionally, VALADDR and ADDRESS may also be NULL if no discriminant | |
6670 | values from the record are needed. Except in the case that DVAL, | |
6671 | VALADDR, and ADDRESS are all 0 or NULL, a variant field (unless | |
6672 | unchecked) is replaced by a particular branch of the variant. | |
6673 | ||
6674 | NOTE: the case in which DVAL and VALADDR are NULL and ADDRESS is 0 | |
6675 | is questionable and may be removed. It can arise during the | |
6676 | processing of an unconstrained-array-of-record type where all the | |
6677 | variant branches have exactly the same size. This is because in | |
6678 | such cases, the compiler does not bother to use the XVS convention | |
6679 | when encoding the record. I am currently dubious of this | |
6680 | shortcut and suspect the compiler should be altered. FIXME. */ | |
14f9c5c9 | 6681 | |
d2e4a39e | 6682 | static struct type * |
fc1a4b47 | 6683 | to_fixed_record_type (struct type *type0, const gdb_byte *valaddr, |
4c4b4cd2 | 6684 | CORE_ADDR address, struct value *dval) |
14f9c5c9 | 6685 | { |
d2e4a39e | 6686 | struct type *templ_type; |
14f9c5c9 | 6687 | |
4c4b4cd2 PH |
6688 | if (TYPE_FLAGS (type0) & TYPE_FLAG_FIXED_INSTANCE) |
6689 | return type0; | |
6690 | ||
d2e4a39e | 6691 | templ_type = dynamic_template_type (type0); |
14f9c5c9 AS |
6692 | |
6693 | if (templ_type != NULL) | |
6694 | return template_to_fixed_record_type (templ_type, valaddr, address, dval); | |
4c4b4cd2 PH |
6695 | else if (variant_field_index (type0) >= 0) |
6696 | { | |
6697 | if (dval == NULL && valaddr == NULL && address == 0) | |
6698 | return type0; | |
6699 | return to_record_with_fixed_variant_part (type0, valaddr, address, | |
6700 | dval); | |
6701 | } | |
14f9c5c9 AS |
6702 | else |
6703 | { | |
4c4b4cd2 | 6704 | TYPE_FLAGS (type0) |= TYPE_FLAG_FIXED_INSTANCE; |
14f9c5c9 AS |
6705 | return type0; |
6706 | } | |
6707 | ||
6708 | } | |
6709 | ||
6710 | /* An ordinary record type (with fixed-length fields) that describes | |
6711 | the value at (VAR_TYPE0, VALADDR, ADDRESS), where VAR_TYPE0 is a | |
6712 | union type. Any necessary discriminants' values should be in DVAL, | |
6713 | a record value. That is, this routine selects the appropriate | |
6714 | branch of the union at ADDR according to the discriminant value | |
4c4b4cd2 | 6715 | indicated in the union's type name. */ |
14f9c5c9 | 6716 | |
d2e4a39e | 6717 | static struct type * |
fc1a4b47 | 6718 | to_fixed_variant_branch_type (struct type *var_type0, const gdb_byte *valaddr, |
4c4b4cd2 | 6719 | CORE_ADDR address, struct value *dval) |
14f9c5c9 AS |
6720 | { |
6721 | int which; | |
d2e4a39e AS |
6722 | struct type *templ_type; |
6723 | struct type *var_type; | |
14f9c5c9 AS |
6724 | |
6725 | if (TYPE_CODE (var_type0) == TYPE_CODE_PTR) | |
6726 | var_type = TYPE_TARGET_TYPE (var_type0); | |
d2e4a39e | 6727 | else |
14f9c5c9 AS |
6728 | var_type = var_type0; |
6729 | ||
6730 | templ_type = ada_find_parallel_type (var_type, "___XVU"); | |
6731 | ||
6732 | if (templ_type != NULL) | |
6733 | var_type = templ_type; | |
6734 | ||
d2e4a39e AS |
6735 | which = |
6736 | ada_which_variant_applies (var_type, | |
0fd88904 | 6737 | value_type (dval), value_contents (dval)); |
14f9c5c9 AS |
6738 | |
6739 | if (which < 0) | |
6740 | return empty_record (TYPE_OBJFILE (var_type)); | |
6741 | else if (is_dynamic_field (var_type, which)) | |
4c4b4cd2 | 6742 | return to_fixed_record_type |
d2e4a39e AS |
6743 | (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (var_type, which)), |
6744 | valaddr, address, dval); | |
4c4b4cd2 | 6745 | else if (variant_field_index (TYPE_FIELD_TYPE (var_type, which)) >= 0) |
d2e4a39e AS |
6746 | return |
6747 | to_fixed_record_type | |
6748 | (TYPE_FIELD_TYPE (var_type, which), valaddr, address, dval); | |
14f9c5c9 AS |
6749 | else |
6750 | return TYPE_FIELD_TYPE (var_type, which); | |
6751 | } | |
6752 | ||
6753 | /* Assuming that TYPE0 is an array type describing the type of a value | |
6754 | at ADDR, and that DVAL describes a record containing any | |
6755 | discriminants used in TYPE0, returns a type for the value that | |
6756 | contains no dynamic components (that is, no components whose sizes | |
6757 | are determined by run-time quantities). Unless IGNORE_TOO_BIG is | |
6758 | true, gives an error message if the resulting type's size is over | |
4c4b4cd2 | 6759 | varsize_limit. */ |
14f9c5c9 | 6760 | |
d2e4a39e AS |
6761 | static struct type * |
6762 | to_fixed_array_type (struct type *type0, struct value *dval, | |
4c4b4cd2 | 6763 | int ignore_too_big) |
14f9c5c9 | 6764 | { |
d2e4a39e AS |
6765 | struct type *index_type_desc; |
6766 | struct type *result; | |
14f9c5c9 | 6767 | |
4c4b4cd2 PH |
6768 | if (ada_is_packed_array_type (type0) /* revisit? */ |
6769 | || (TYPE_FLAGS (type0) & TYPE_FLAG_FIXED_INSTANCE)) | |
6770 | return type0; | |
14f9c5c9 AS |
6771 | |
6772 | index_type_desc = ada_find_parallel_type (type0, "___XA"); | |
6773 | if (index_type_desc == NULL) | |
6774 | { | |
61ee279c | 6775 | struct type *elt_type0 = ada_check_typedef (TYPE_TARGET_TYPE (type0)); |
14f9c5c9 | 6776 | /* NOTE: elt_type---the fixed version of elt_type0---should never |
4c4b4cd2 PH |
6777 | depend on the contents of the array in properly constructed |
6778 | debugging data. */ | |
529cad9c PH |
6779 | /* Create a fixed version of the array element type. |
6780 | We're not providing the address of an element here, | |
e1d5a0d2 | 6781 | and thus the actual object value cannot be inspected to do |
529cad9c PH |
6782 | the conversion. This should not be a problem, since arrays of |
6783 | unconstrained objects are not allowed. In particular, all | |
6784 | the elements of an array of a tagged type should all be of | |
6785 | the same type specified in the debugging info. No need to | |
6786 | consult the object tag. */ | |
d2e4a39e | 6787 | struct type *elt_type = ada_to_fixed_type (elt_type0, 0, 0, dval); |
14f9c5c9 AS |
6788 | |
6789 | if (elt_type0 == elt_type) | |
4c4b4cd2 | 6790 | result = type0; |
14f9c5c9 | 6791 | else |
4c4b4cd2 PH |
6792 | result = create_array_type (alloc_type (TYPE_OBJFILE (type0)), |
6793 | elt_type, TYPE_INDEX_TYPE (type0)); | |
14f9c5c9 AS |
6794 | } |
6795 | else | |
6796 | { | |
6797 | int i; | |
6798 | struct type *elt_type0; | |
6799 | ||
6800 | elt_type0 = type0; | |
6801 | for (i = TYPE_NFIELDS (index_type_desc); i > 0; i -= 1) | |
4c4b4cd2 | 6802 | elt_type0 = TYPE_TARGET_TYPE (elt_type0); |
14f9c5c9 AS |
6803 | |
6804 | /* NOTE: result---the fixed version of elt_type0---should never | |
4c4b4cd2 PH |
6805 | depend on the contents of the array in properly constructed |
6806 | debugging data. */ | |
529cad9c PH |
6807 | /* Create a fixed version of the array element type. |
6808 | We're not providing the address of an element here, | |
e1d5a0d2 | 6809 | and thus the actual object value cannot be inspected to do |
529cad9c PH |
6810 | the conversion. This should not be a problem, since arrays of |
6811 | unconstrained objects are not allowed. In particular, all | |
6812 | the elements of an array of a tagged type should all be of | |
6813 | the same type specified in the debugging info. No need to | |
6814 | consult the object tag. */ | |
61ee279c | 6815 | result = ada_to_fixed_type (ada_check_typedef (elt_type0), 0, 0, dval); |
14f9c5c9 | 6816 | for (i = TYPE_NFIELDS (index_type_desc) - 1; i >= 0; i -= 1) |
4c4b4cd2 PH |
6817 | { |
6818 | struct type *range_type = | |
6819 | to_fixed_range_type (TYPE_FIELD_NAME (index_type_desc, i), | |
6820 | dval, TYPE_OBJFILE (type0)); | |
6821 | result = create_array_type (alloc_type (TYPE_OBJFILE (type0)), | |
6822 | result, range_type); | |
6823 | } | |
d2e4a39e | 6824 | if (!ignore_too_big && TYPE_LENGTH (result) > varsize_limit) |
323e0a4a | 6825 | error (_("array type with dynamic size is larger than varsize-limit")); |
14f9c5c9 AS |
6826 | } |
6827 | ||
4c4b4cd2 | 6828 | TYPE_FLAGS (result) |= TYPE_FLAG_FIXED_INSTANCE; |
14f9c5c9 | 6829 | return result; |
d2e4a39e | 6830 | } |
14f9c5c9 AS |
6831 | |
6832 | ||
6833 | /* A standard type (containing no dynamically sized components) | |
6834 | corresponding to TYPE for the value (TYPE, VALADDR, ADDRESS) | |
6835 | DVAL describes a record containing any discriminants used in TYPE0, | |
4c4b4cd2 | 6836 | and may be NULL if there are none, or if the object of type TYPE at |
529cad9c PH |
6837 | ADDRESS or in VALADDR contains these discriminants. |
6838 | ||
6839 | In the case of tagged types, this function attempts to locate the object's | |
6840 | tag and use it to compute the actual type. However, when ADDRESS is null, | |
6841 | we cannot use it to determine the location of the tag, and therefore | |
6842 | compute the tagged type's actual type. So we return the tagged type | |
6843 | without consulting the tag. */ | |
6844 | ||
d2e4a39e | 6845 | struct type * |
fc1a4b47 | 6846 | ada_to_fixed_type (struct type *type, const gdb_byte *valaddr, |
4c4b4cd2 | 6847 | CORE_ADDR address, struct value *dval) |
14f9c5c9 | 6848 | { |
61ee279c | 6849 | type = ada_check_typedef (type); |
d2e4a39e AS |
6850 | switch (TYPE_CODE (type)) |
6851 | { | |
6852 | default: | |
14f9c5c9 | 6853 | return type; |
d2e4a39e | 6854 | case TYPE_CODE_STRUCT: |
4c4b4cd2 | 6855 | { |
76a01679 | 6856 | struct type *static_type = to_static_fixed_type (type); |
529cad9c PH |
6857 | |
6858 | /* If STATIC_TYPE is a tagged type and we know the object's address, | |
6859 | then we can determine its tag, and compute the object's actual | |
6860 | type from there. */ | |
6861 | ||
6862 | if (address != 0 && ada_is_tagged_type (static_type, 0)) | |
76a01679 JB |
6863 | { |
6864 | struct type *real_type = | |
6865 | type_from_tag (value_tag_from_contents_and_address (static_type, | |
6866 | valaddr, | |
6867 | address)); | |
6868 | if (real_type != NULL) | |
6869 | type = real_type; | |
6870 | } | |
6871 | return to_fixed_record_type (type, valaddr, address, NULL); | |
4c4b4cd2 | 6872 | } |
d2e4a39e | 6873 | case TYPE_CODE_ARRAY: |
4c4b4cd2 | 6874 | return to_fixed_array_type (type, dval, 1); |
d2e4a39e AS |
6875 | case TYPE_CODE_UNION: |
6876 | if (dval == NULL) | |
4c4b4cd2 | 6877 | return type; |
d2e4a39e | 6878 | else |
4c4b4cd2 | 6879 | return to_fixed_variant_branch_type (type, valaddr, address, dval); |
d2e4a39e | 6880 | } |
14f9c5c9 AS |
6881 | } |
6882 | ||
6883 | /* A standard (static-sized) type corresponding as well as possible to | |
4c4b4cd2 | 6884 | TYPE0, but based on no runtime data. */ |
14f9c5c9 | 6885 | |
d2e4a39e AS |
6886 | static struct type * |
6887 | to_static_fixed_type (struct type *type0) | |
14f9c5c9 | 6888 | { |
d2e4a39e | 6889 | struct type *type; |
14f9c5c9 AS |
6890 | |
6891 | if (type0 == NULL) | |
6892 | return NULL; | |
6893 | ||
4c4b4cd2 PH |
6894 | if (TYPE_FLAGS (type0) & TYPE_FLAG_FIXED_INSTANCE) |
6895 | return type0; | |
6896 | ||
61ee279c | 6897 | type0 = ada_check_typedef (type0); |
d2e4a39e | 6898 | |
14f9c5c9 AS |
6899 | switch (TYPE_CODE (type0)) |
6900 | { | |
6901 | default: | |
6902 | return type0; | |
6903 | case TYPE_CODE_STRUCT: | |
6904 | type = dynamic_template_type (type0); | |
d2e4a39e | 6905 | if (type != NULL) |
4c4b4cd2 PH |
6906 | return template_to_static_fixed_type (type); |
6907 | else | |
6908 | return template_to_static_fixed_type (type0); | |
14f9c5c9 AS |
6909 | case TYPE_CODE_UNION: |
6910 | type = ada_find_parallel_type (type0, "___XVU"); | |
6911 | if (type != NULL) | |
4c4b4cd2 PH |
6912 | return template_to_static_fixed_type (type); |
6913 | else | |
6914 | return template_to_static_fixed_type (type0); | |
14f9c5c9 AS |
6915 | } |
6916 | } | |
6917 | ||
4c4b4cd2 PH |
6918 | /* A static approximation of TYPE with all type wrappers removed. */ |
6919 | ||
d2e4a39e AS |
6920 | static struct type * |
6921 | static_unwrap_type (struct type *type) | |
14f9c5c9 AS |
6922 | { |
6923 | if (ada_is_aligner_type (type)) | |
6924 | { | |
61ee279c | 6925 | struct type *type1 = TYPE_FIELD_TYPE (ada_check_typedef (type), 0); |
14f9c5c9 | 6926 | if (ada_type_name (type1) == NULL) |
4c4b4cd2 | 6927 | TYPE_NAME (type1) = ada_type_name (type); |
14f9c5c9 AS |
6928 | |
6929 | return static_unwrap_type (type1); | |
6930 | } | |
d2e4a39e | 6931 | else |
14f9c5c9 | 6932 | { |
d2e4a39e AS |
6933 | struct type *raw_real_type = ada_get_base_type (type); |
6934 | if (raw_real_type == type) | |
4c4b4cd2 | 6935 | return type; |
14f9c5c9 | 6936 | else |
4c4b4cd2 | 6937 | return to_static_fixed_type (raw_real_type); |
14f9c5c9 AS |
6938 | } |
6939 | } | |
6940 | ||
6941 | /* In some cases, incomplete and private types require | |
4c4b4cd2 | 6942 | cross-references that are not resolved as records (for example, |
14f9c5c9 AS |
6943 | type Foo; |
6944 | type FooP is access Foo; | |
6945 | V: FooP; | |
6946 | type Foo is array ...; | |
4c4b4cd2 | 6947 | ). In these cases, since there is no mechanism for producing |
14f9c5c9 AS |
6948 | cross-references to such types, we instead substitute for FooP a |
6949 | stub enumeration type that is nowhere resolved, and whose tag is | |
4c4b4cd2 | 6950 | the name of the actual type. Call these types "non-record stubs". */ |
14f9c5c9 AS |
6951 | |
6952 | /* A type equivalent to TYPE that is not a non-record stub, if one | |
4c4b4cd2 PH |
6953 | exists, otherwise TYPE. */ |
6954 | ||
d2e4a39e | 6955 | struct type * |
61ee279c | 6956 | ada_check_typedef (struct type *type) |
14f9c5c9 AS |
6957 | { |
6958 | CHECK_TYPEDEF (type); | |
6959 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_ENUM | |
529cad9c | 6960 | || !TYPE_STUB (type) |
14f9c5c9 AS |
6961 | || TYPE_TAG_NAME (type) == NULL) |
6962 | return type; | |
d2e4a39e | 6963 | else |
14f9c5c9 | 6964 | { |
d2e4a39e AS |
6965 | char *name = TYPE_TAG_NAME (type); |
6966 | struct type *type1 = ada_find_any_type (name); | |
14f9c5c9 AS |
6967 | return (type1 == NULL) ? type : type1; |
6968 | } | |
6969 | } | |
6970 | ||
6971 | /* A value representing the data at VALADDR/ADDRESS as described by | |
6972 | type TYPE0, but with a standard (static-sized) type that correctly | |
6973 | describes it. If VAL0 is not NULL and TYPE0 already is a standard | |
6974 | type, then return VAL0 [this feature is simply to avoid redundant | |
4c4b4cd2 | 6975 | creation of struct values]. */ |
14f9c5c9 | 6976 | |
4c4b4cd2 PH |
6977 | static struct value * |
6978 | ada_to_fixed_value_create (struct type *type0, CORE_ADDR address, | |
6979 | struct value *val0) | |
14f9c5c9 | 6980 | { |
4c4b4cd2 | 6981 | struct type *type = ada_to_fixed_type (type0, 0, address, NULL); |
14f9c5c9 AS |
6982 | if (type == type0 && val0 != NULL) |
6983 | return val0; | |
d2e4a39e | 6984 | else |
4c4b4cd2 PH |
6985 | return value_from_contents_and_address (type, 0, address); |
6986 | } | |
6987 | ||
6988 | /* A value representing VAL, but with a standard (static-sized) type | |
6989 | that correctly describes it. Does not necessarily create a new | |
6990 | value. */ | |
6991 | ||
6992 | static struct value * | |
6993 | ada_to_fixed_value (struct value *val) | |
6994 | { | |
df407dfe AC |
6995 | return ada_to_fixed_value_create (value_type (val), |
6996 | VALUE_ADDRESS (val) + value_offset (val), | |
4c4b4cd2 | 6997 | val); |
14f9c5c9 AS |
6998 | } |
6999 | ||
4c4b4cd2 | 7000 | /* A value representing VAL, but with a standard (static-sized) type |
14f9c5c9 AS |
7001 | chosen to approximate the real type of VAL as well as possible, but |
7002 | without consulting any runtime values. For Ada dynamic-sized | |
4c4b4cd2 | 7003 | types, therefore, the type of the result is likely to be inaccurate. */ |
14f9c5c9 | 7004 | |
d2e4a39e AS |
7005 | struct value * |
7006 | ada_to_static_fixed_value (struct value *val) | |
14f9c5c9 | 7007 | { |
d2e4a39e | 7008 | struct type *type = |
df407dfe AC |
7009 | to_static_fixed_type (static_unwrap_type (value_type (val))); |
7010 | if (type == value_type (val)) | |
14f9c5c9 AS |
7011 | return val; |
7012 | else | |
4c4b4cd2 | 7013 | return coerce_unspec_val_to_type (val, type); |
14f9c5c9 | 7014 | } |
d2e4a39e | 7015 | \f |
14f9c5c9 | 7016 | |
14f9c5c9 AS |
7017 | /* Attributes */ |
7018 | ||
4c4b4cd2 PH |
7019 | /* Table mapping attribute numbers to names. |
7020 | NOTE: Keep up to date with enum ada_attribute definition in ada-lang.h. */ | |
14f9c5c9 | 7021 | |
d2e4a39e | 7022 | static const char *attribute_names[] = { |
14f9c5c9 AS |
7023 | "<?>", |
7024 | ||
d2e4a39e | 7025 | "first", |
14f9c5c9 AS |
7026 | "last", |
7027 | "length", | |
7028 | "image", | |
14f9c5c9 AS |
7029 | "max", |
7030 | "min", | |
4c4b4cd2 PH |
7031 | "modulus", |
7032 | "pos", | |
7033 | "size", | |
7034 | "tag", | |
14f9c5c9 | 7035 | "val", |
14f9c5c9 AS |
7036 | 0 |
7037 | }; | |
7038 | ||
d2e4a39e | 7039 | const char * |
4c4b4cd2 | 7040 | ada_attribute_name (enum exp_opcode n) |
14f9c5c9 | 7041 | { |
4c4b4cd2 PH |
7042 | if (n >= OP_ATR_FIRST && n <= (int) OP_ATR_VAL) |
7043 | return attribute_names[n - OP_ATR_FIRST + 1]; | |
14f9c5c9 AS |
7044 | else |
7045 | return attribute_names[0]; | |
7046 | } | |
7047 | ||
4c4b4cd2 | 7048 | /* Evaluate the 'POS attribute applied to ARG. */ |
14f9c5c9 | 7049 | |
4c4b4cd2 PH |
7050 | static LONGEST |
7051 | pos_atr (struct value *arg) | |
14f9c5c9 | 7052 | { |
df407dfe | 7053 | struct type *type = value_type (arg); |
14f9c5c9 | 7054 | |
d2e4a39e | 7055 | if (!discrete_type_p (type)) |
323e0a4a | 7056 | error (_("'POS only defined on discrete types")); |
14f9c5c9 AS |
7057 | |
7058 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) | |
7059 | { | |
7060 | int i; | |
7061 | LONGEST v = value_as_long (arg); | |
7062 | ||
d2e4a39e | 7063 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) |
4c4b4cd2 PH |
7064 | { |
7065 | if (v == TYPE_FIELD_BITPOS (type, i)) | |
7066 | return i; | |
7067 | } | |
323e0a4a | 7068 | error (_("enumeration value is invalid: can't find 'POS")); |
14f9c5c9 AS |
7069 | } |
7070 | else | |
4c4b4cd2 PH |
7071 | return value_as_long (arg); |
7072 | } | |
7073 | ||
7074 | static struct value * | |
7075 | value_pos_atr (struct value *arg) | |
7076 | { | |
72d5681a | 7077 | return value_from_longest (builtin_type_int, pos_atr (arg)); |
14f9c5c9 AS |
7078 | } |
7079 | ||
4c4b4cd2 | 7080 | /* Evaluate the TYPE'VAL attribute applied to ARG. */ |
14f9c5c9 | 7081 | |
d2e4a39e AS |
7082 | static struct value * |
7083 | value_val_atr (struct type *type, struct value *arg) | |
14f9c5c9 | 7084 | { |
d2e4a39e | 7085 | if (!discrete_type_p (type)) |
323e0a4a | 7086 | error (_("'VAL only defined on discrete types")); |
df407dfe | 7087 | if (!integer_type_p (value_type (arg))) |
323e0a4a | 7088 | error (_("'VAL requires integral argument")); |
14f9c5c9 AS |
7089 | |
7090 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) | |
7091 | { | |
7092 | long pos = value_as_long (arg); | |
7093 | if (pos < 0 || pos >= TYPE_NFIELDS (type)) | |
323e0a4a | 7094 | error (_("argument to 'VAL out of range")); |
d2e4a39e | 7095 | return value_from_longest (type, TYPE_FIELD_BITPOS (type, pos)); |
14f9c5c9 AS |
7096 | } |
7097 | else | |
7098 | return value_from_longest (type, value_as_long (arg)); | |
7099 | } | |
14f9c5c9 | 7100 | \f |
d2e4a39e | 7101 | |
4c4b4cd2 | 7102 | /* Evaluation */ |
14f9c5c9 | 7103 | |
4c4b4cd2 PH |
7104 | /* True if TYPE appears to be an Ada character type. |
7105 | [At the moment, this is true only for Character and Wide_Character; | |
7106 | It is a heuristic test that could stand improvement]. */ | |
14f9c5c9 | 7107 | |
d2e4a39e AS |
7108 | int |
7109 | ada_is_character_type (struct type *type) | |
14f9c5c9 | 7110 | { |
d2e4a39e AS |
7111 | const char *name = ada_type_name (type); |
7112 | return | |
14f9c5c9 | 7113 | name != NULL |
d2e4a39e | 7114 | && (TYPE_CODE (type) == TYPE_CODE_CHAR |
4c4b4cd2 PH |
7115 | || TYPE_CODE (type) == TYPE_CODE_INT |
7116 | || TYPE_CODE (type) == TYPE_CODE_RANGE) | |
7117 | && (strcmp (name, "character") == 0 | |
7118 | || strcmp (name, "wide_character") == 0 | |
7119 | || strcmp (name, "unsigned char") == 0); | |
14f9c5c9 AS |
7120 | } |
7121 | ||
4c4b4cd2 | 7122 | /* True if TYPE appears to be an Ada string type. */ |
14f9c5c9 AS |
7123 | |
7124 | int | |
ebf56fd3 | 7125 | ada_is_string_type (struct type *type) |
14f9c5c9 | 7126 | { |
61ee279c | 7127 | type = ada_check_typedef (type); |
d2e4a39e | 7128 | if (type != NULL |
14f9c5c9 | 7129 | && TYPE_CODE (type) != TYPE_CODE_PTR |
76a01679 JB |
7130 | && (ada_is_simple_array_type (type) |
7131 | || ada_is_array_descriptor_type (type)) | |
14f9c5c9 AS |
7132 | && ada_array_arity (type) == 1) |
7133 | { | |
7134 | struct type *elttype = ada_array_element_type (type, 1); | |
7135 | ||
7136 | return ada_is_character_type (elttype); | |
7137 | } | |
d2e4a39e | 7138 | else |
14f9c5c9 AS |
7139 | return 0; |
7140 | } | |
7141 | ||
7142 | ||
7143 | /* True if TYPE is a struct type introduced by the compiler to force the | |
7144 | alignment of a value. Such types have a single field with a | |
4c4b4cd2 | 7145 | distinctive name. */ |
14f9c5c9 AS |
7146 | |
7147 | int | |
ebf56fd3 | 7148 | ada_is_aligner_type (struct type *type) |
14f9c5c9 | 7149 | { |
61ee279c | 7150 | type = ada_check_typedef (type); |
714e53ab PH |
7151 | |
7152 | /* If we can find a parallel XVS type, then the XVS type should | |
7153 | be used instead of this type. And hence, this is not an aligner | |
7154 | type. */ | |
7155 | if (ada_find_parallel_type (type, "___XVS") != NULL) | |
7156 | return 0; | |
7157 | ||
14f9c5c9 | 7158 | return (TYPE_CODE (type) == TYPE_CODE_STRUCT |
4c4b4cd2 PH |
7159 | && TYPE_NFIELDS (type) == 1 |
7160 | && strcmp (TYPE_FIELD_NAME (type, 0), "F") == 0); | |
14f9c5c9 AS |
7161 | } |
7162 | ||
7163 | /* If there is an ___XVS-convention type parallel to SUBTYPE, return | |
4c4b4cd2 | 7164 | the parallel type. */ |
14f9c5c9 | 7165 | |
d2e4a39e AS |
7166 | struct type * |
7167 | ada_get_base_type (struct type *raw_type) | |
14f9c5c9 | 7168 | { |
d2e4a39e AS |
7169 | struct type *real_type_namer; |
7170 | struct type *raw_real_type; | |
14f9c5c9 AS |
7171 | |
7172 | if (raw_type == NULL || TYPE_CODE (raw_type) != TYPE_CODE_STRUCT) | |
7173 | return raw_type; | |
7174 | ||
7175 | real_type_namer = ada_find_parallel_type (raw_type, "___XVS"); | |
d2e4a39e | 7176 | if (real_type_namer == NULL |
14f9c5c9 AS |
7177 | || TYPE_CODE (real_type_namer) != TYPE_CODE_STRUCT |
7178 | || TYPE_NFIELDS (real_type_namer) != 1) | |
7179 | return raw_type; | |
7180 | ||
7181 | raw_real_type = ada_find_any_type (TYPE_FIELD_NAME (real_type_namer, 0)); | |
d2e4a39e | 7182 | if (raw_real_type == NULL) |
14f9c5c9 AS |
7183 | return raw_type; |
7184 | else | |
7185 | return raw_real_type; | |
d2e4a39e | 7186 | } |
14f9c5c9 | 7187 | |
4c4b4cd2 | 7188 | /* The type of value designated by TYPE, with all aligners removed. */ |
14f9c5c9 | 7189 | |
d2e4a39e AS |
7190 | struct type * |
7191 | ada_aligned_type (struct type *type) | |
14f9c5c9 AS |
7192 | { |
7193 | if (ada_is_aligner_type (type)) | |
7194 | return ada_aligned_type (TYPE_FIELD_TYPE (type, 0)); | |
7195 | else | |
7196 | return ada_get_base_type (type); | |
7197 | } | |
7198 | ||
7199 | ||
7200 | /* The address of the aligned value in an object at address VALADDR | |
4c4b4cd2 | 7201 | having type TYPE. Assumes ada_is_aligner_type (TYPE). */ |
14f9c5c9 | 7202 | |
fc1a4b47 AC |
7203 | const gdb_byte * |
7204 | ada_aligned_value_addr (struct type *type, const gdb_byte *valaddr) | |
14f9c5c9 | 7205 | { |
d2e4a39e | 7206 | if (ada_is_aligner_type (type)) |
14f9c5c9 | 7207 | return ada_aligned_value_addr (TYPE_FIELD_TYPE (type, 0), |
4c4b4cd2 PH |
7208 | valaddr + |
7209 | TYPE_FIELD_BITPOS (type, | |
7210 | 0) / TARGET_CHAR_BIT); | |
14f9c5c9 AS |
7211 | else |
7212 | return valaddr; | |
7213 | } | |
7214 | ||
4c4b4cd2 PH |
7215 | |
7216 | ||
14f9c5c9 | 7217 | /* The printed representation of an enumeration literal with encoded |
4c4b4cd2 | 7218 | name NAME. The value is good to the next call of ada_enum_name. */ |
d2e4a39e AS |
7219 | const char * |
7220 | ada_enum_name (const char *name) | |
14f9c5c9 | 7221 | { |
4c4b4cd2 PH |
7222 | static char *result; |
7223 | static size_t result_len = 0; | |
d2e4a39e | 7224 | char *tmp; |
14f9c5c9 | 7225 | |
4c4b4cd2 PH |
7226 | /* First, unqualify the enumeration name: |
7227 | 1. Search for the last '.' character. If we find one, then skip | |
76a01679 JB |
7228 | all the preceeding characters, the unqualified name starts |
7229 | right after that dot. | |
4c4b4cd2 | 7230 | 2. Otherwise, we may be debugging on a target where the compiler |
76a01679 JB |
7231 | translates dots into "__". Search forward for double underscores, |
7232 | but stop searching when we hit an overloading suffix, which is | |
7233 | of the form "__" followed by digits. */ | |
4c4b4cd2 | 7234 | |
c3e5cd34 PH |
7235 | tmp = strrchr (name, '.'); |
7236 | if (tmp != NULL) | |
4c4b4cd2 PH |
7237 | name = tmp + 1; |
7238 | else | |
14f9c5c9 | 7239 | { |
4c4b4cd2 PH |
7240 | while ((tmp = strstr (name, "__")) != NULL) |
7241 | { | |
7242 | if (isdigit (tmp[2])) | |
7243 | break; | |
7244 | else | |
7245 | name = tmp + 2; | |
7246 | } | |
14f9c5c9 AS |
7247 | } |
7248 | ||
7249 | if (name[0] == 'Q') | |
7250 | { | |
14f9c5c9 AS |
7251 | int v; |
7252 | if (name[1] == 'U' || name[1] == 'W') | |
4c4b4cd2 PH |
7253 | { |
7254 | if (sscanf (name + 2, "%x", &v) != 1) | |
7255 | return name; | |
7256 | } | |
14f9c5c9 | 7257 | else |
4c4b4cd2 | 7258 | return name; |
14f9c5c9 | 7259 | |
4c4b4cd2 | 7260 | GROW_VECT (result, result_len, 16); |
14f9c5c9 | 7261 | if (isascii (v) && isprint (v)) |
4c4b4cd2 | 7262 | sprintf (result, "'%c'", v); |
14f9c5c9 | 7263 | else if (name[1] == 'U') |
4c4b4cd2 | 7264 | sprintf (result, "[\"%02x\"]", v); |
14f9c5c9 | 7265 | else |
4c4b4cd2 | 7266 | sprintf (result, "[\"%04x\"]", v); |
14f9c5c9 AS |
7267 | |
7268 | return result; | |
7269 | } | |
d2e4a39e | 7270 | else |
4c4b4cd2 | 7271 | { |
c3e5cd34 PH |
7272 | tmp = strstr (name, "__"); |
7273 | if (tmp == NULL) | |
7274 | tmp = strstr (name, "$"); | |
7275 | if (tmp != NULL) | |
4c4b4cd2 PH |
7276 | { |
7277 | GROW_VECT (result, result_len, tmp - name + 1); | |
7278 | strncpy (result, name, tmp - name); | |
7279 | result[tmp - name] = '\0'; | |
7280 | return result; | |
7281 | } | |
7282 | ||
7283 | return name; | |
7284 | } | |
14f9c5c9 AS |
7285 | } |
7286 | ||
d2e4a39e | 7287 | static struct value * |
ebf56fd3 | 7288 | evaluate_subexp (struct type *expect_type, struct expression *exp, int *pos, |
4c4b4cd2 | 7289 | enum noside noside) |
14f9c5c9 | 7290 | { |
76a01679 | 7291 | return (*exp->language_defn->la_exp_desc->evaluate_exp) |
4c4b4cd2 | 7292 | (expect_type, exp, pos, noside); |
14f9c5c9 AS |
7293 | } |
7294 | ||
7295 | /* Evaluate the subexpression of EXP starting at *POS as for | |
7296 | evaluate_type, updating *POS to point just past the evaluated | |
4c4b4cd2 | 7297 | expression. */ |
14f9c5c9 | 7298 | |
d2e4a39e AS |
7299 | static struct value * |
7300 | evaluate_subexp_type (struct expression *exp, int *pos) | |
14f9c5c9 | 7301 | { |
4c4b4cd2 | 7302 | return (*exp->language_defn->la_exp_desc->evaluate_exp) |
14f9c5c9 AS |
7303 | (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); |
7304 | } | |
7305 | ||
7306 | /* If VAL is wrapped in an aligner or subtype wrapper, return the | |
4c4b4cd2 | 7307 | value it wraps. */ |
14f9c5c9 | 7308 | |
d2e4a39e AS |
7309 | static struct value * |
7310 | unwrap_value (struct value *val) | |
14f9c5c9 | 7311 | { |
df407dfe | 7312 | struct type *type = ada_check_typedef (value_type (val)); |
14f9c5c9 AS |
7313 | if (ada_is_aligner_type (type)) |
7314 | { | |
d2e4a39e | 7315 | struct value *v = value_struct_elt (&val, NULL, "F", |
4c4b4cd2 | 7316 | NULL, "internal structure"); |
df407dfe | 7317 | struct type *val_type = ada_check_typedef (value_type (v)); |
14f9c5c9 | 7318 | if (ada_type_name (val_type) == NULL) |
4c4b4cd2 | 7319 | TYPE_NAME (val_type) = ada_type_name (type); |
14f9c5c9 AS |
7320 | |
7321 | return unwrap_value (v); | |
7322 | } | |
d2e4a39e | 7323 | else |
14f9c5c9 | 7324 | { |
d2e4a39e | 7325 | struct type *raw_real_type = |
61ee279c | 7326 | ada_check_typedef (ada_get_base_type (type)); |
d2e4a39e | 7327 | |
14f9c5c9 | 7328 | if (type == raw_real_type) |
4c4b4cd2 | 7329 | return val; |
14f9c5c9 | 7330 | |
d2e4a39e | 7331 | return |
4c4b4cd2 PH |
7332 | coerce_unspec_val_to_type |
7333 | (val, ada_to_fixed_type (raw_real_type, 0, | |
df407dfe | 7334 | VALUE_ADDRESS (val) + value_offset (val), |
4c4b4cd2 | 7335 | NULL)); |
14f9c5c9 AS |
7336 | } |
7337 | } | |
d2e4a39e AS |
7338 | |
7339 | static struct value * | |
7340 | cast_to_fixed (struct type *type, struct value *arg) | |
14f9c5c9 AS |
7341 | { |
7342 | LONGEST val; | |
7343 | ||
df407dfe | 7344 | if (type == value_type (arg)) |
14f9c5c9 | 7345 | return arg; |
df407dfe | 7346 | else if (ada_is_fixed_point_type (value_type (arg))) |
d2e4a39e | 7347 | val = ada_float_to_fixed (type, |
df407dfe | 7348 | ada_fixed_to_float (value_type (arg), |
4c4b4cd2 | 7349 | value_as_long (arg))); |
d2e4a39e | 7350 | else |
14f9c5c9 | 7351 | { |
d2e4a39e | 7352 | DOUBLEST argd = |
4c4b4cd2 | 7353 | value_as_double (value_cast (builtin_type_double, value_copy (arg))); |
14f9c5c9 AS |
7354 | val = ada_float_to_fixed (type, argd); |
7355 | } | |
7356 | ||
7357 | return value_from_longest (type, val); | |
7358 | } | |
7359 | ||
d2e4a39e AS |
7360 | static struct value * |
7361 | cast_from_fixed_to_double (struct value *arg) | |
14f9c5c9 | 7362 | { |
df407dfe | 7363 | DOUBLEST val = ada_fixed_to_float (value_type (arg), |
4c4b4cd2 | 7364 | value_as_long (arg)); |
14f9c5c9 AS |
7365 | return value_from_double (builtin_type_double, val); |
7366 | } | |
7367 | ||
4c4b4cd2 PH |
7368 | /* Coerce VAL as necessary for assignment to an lval of type TYPE, and |
7369 | return the converted value. */ | |
7370 | ||
d2e4a39e AS |
7371 | static struct value * |
7372 | coerce_for_assign (struct type *type, struct value *val) | |
14f9c5c9 | 7373 | { |
df407dfe | 7374 | struct type *type2 = value_type (val); |
14f9c5c9 AS |
7375 | if (type == type2) |
7376 | return val; | |
7377 | ||
61ee279c PH |
7378 | type2 = ada_check_typedef (type2); |
7379 | type = ada_check_typedef (type); | |
14f9c5c9 | 7380 | |
d2e4a39e AS |
7381 | if (TYPE_CODE (type2) == TYPE_CODE_PTR |
7382 | && TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
14f9c5c9 AS |
7383 | { |
7384 | val = ada_value_ind (val); | |
df407dfe | 7385 | type2 = value_type (val); |
14f9c5c9 AS |
7386 | } |
7387 | ||
d2e4a39e | 7388 | if (TYPE_CODE (type2) == TYPE_CODE_ARRAY |
14f9c5c9 AS |
7389 | && TYPE_CODE (type) == TYPE_CODE_ARRAY) |
7390 | { | |
7391 | if (TYPE_LENGTH (type2) != TYPE_LENGTH (type) | |
4c4b4cd2 PH |
7392 | || TYPE_LENGTH (TYPE_TARGET_TYPE (type2)) |
7393 | != TYPE_LENGTH (TYPE_TARGET_TYPE (type2))) | |
323e0a4a | 7394 | error (_("Incompatible types in assignment")); |
04624583 | 7395 | deprecated_set_value_type (val, type); |
14f9c5c9 | 7396 | } |
d2e4a39e | 7397 | return val; |
14f9c5c9 AS |
7398 | } |
7399 | ||
4c4b4cd2 PH |
7400 | static struct value * |
7401 | ada_value_binop (struct value *arg1, struct value *arg2, enum exp_opcode op) | |
7402 | { | |
7403 | struct value *val; | |
7404 | struct type *type1, *type2; | |
7405 | LONGEST v, v1, v2; | |
7406 | ||
994b9211 AC |
7407 | arg1 = coerce_ref (arg1); |
7408 | arg2 = coerce_ref (arg2); | |
df407dfe AC |
7409 | type1 = base_type (ada_check_typedef (value_type (arg1))); |
7410 | type2 = base_type (ada_check_typedef (value_type (arg2))); | |
4c4b4cd2 | 7411 | |
76a01679 JB |
7412 | if (TYPE_CODE (type1) != TYPE_CODE_INT |
7413 | || TYPE_CODE (type2) != TYPE_CODE_INT) | |
4c4b4cd2 PH |
7414 | return value_binop (arg1, arg2, op); |
7415 | ||
76a01679 | 7416 | switch (op) |
4c4b4cd2 PH |
7417 | { |
7418 | case BINOP_MOD: | |
7419 | case BINOP_DIV: | |
7420 | case BINOP_REM: | |
7421 | break; | |
7422 | default: | |
7423 | return value_binop (arg1, arg2, op); | |
7424 | } | |
7425 | ||
7426 | v2 = value_as_long (arg2); | |
7427 | if (v2 == 0) | |
323e0a4a | 7428 | error (_("second operand of %s must not be zero."), op_string (op)); |
4c4b4cd2 PH |
7429 | |
7430 | if (TYPE_UNSIGNED (type1) || op == BINOP_MOD) | |
7431 | return value_binop (arg1, arg2, op); | |
7432 | ||
7433 | v1 = value_as_long (arg1); | |
7434 | switch (op) | |
7435 | { | |
7436 | case BINOP_DIV: | |
7437 | v = v1 / v2; | |
76a01679 JB |
7438 | if (!TRUNCATION_TOWARDS_ZERO && v1 * (v1 % v2) < 0) |
7439 | v += v > 0 ? -1 : 1; | |
4c4b4cd2 PH |
7440 | break; |
7441 | case BINOP_REM: | |
7442 | v = v1 % v2; | |
76a01679 JB |
7443 | if (v * v1 < 0) |
7444 | v -= v2; | |
4c4b4cd2 PH |
7445 | break; |
7446 | default: | |
7447 | /* Should not reach this point. */ | |
7448 | v = 0; | |
7449 | } | |
7450 | ||
7451 | val = allocate_value (type1); | |
990a07ab | 7452 | store_unsigned_integer (value_contents_raw (val), |
df407dfe | 7453 | TYPE_LENGTH (value_type (val)), v); |
4c4b4cd2 PH |
7454 | return val; |
7455 | } | |
7456 | ||
7457 | static int | |
7458 | ada_value_equal (struct value *arg1, struct value *arg2) | |
7459 | { | |
df407dfe AC |
7460 | if (ada_is_direct_array_type (value_type (arg1)) |
7461 | || ada_is_direct_array_type (value_type (arg2))) | |
4c4b4cd2 PH |
7462 | { |
7463 | arg1 = ada_coerce_to_simple_array (arg1); | |
7464 | arg2 = ada_coerce_to_simple_array (arg2); | |
df407dfe AC |
7465 | if (TYPE_CODE (value_type (arg1)) != TYPE_CODE_ARRAY |
7466 | || TYPE_CODE (value_type (arg2)) != TYPE_CODE_ARRAY) | |
323e0a4a | 7467 | error (_("Attempt to compare array with non-array")); |
4c4b4cd2 | 7468 | /* FIXME: The following works only for types whose |
76a01679 JB |
7469 | representations use all bits (no padding or undefined bits) |
7470 | and do not have user-defined equality. */ | |
7471 | return | |
df407dfe | 7472 | TYPE_LENGTH (value_type (arg1)) == TYPE_LENGTH (value_type (arg2)) |
0fd88904 | 7473 | && memcmp (value_contents (arg1), value_contents (arg2), |
df407dfe | 7474 | TYPE_LENGTH (value_type (arg1))) == 0; |
4c4b4cd2 PH |
7475 | } |
7476 | return value_equal (arg1, arg2); | |
7477 | } | |
7478 | ||
52ce6436 PH |
7479 | /* Total number of component associations in the aggregate starting at |
7480 | index PC in EXP. Assumes that index PC is the start of an | |
7481 | OP_AGGREGATE. */ | |
7482 | ||
7483 | static int | |
7484 | num_component_specs (struct expression *exp, int pc) | |
7485 | { | |
7486 | int n, m, i; | |
7487 | m = exp->elts[pc + 1].longconst; | |
7488 | pc += 3; | |
7489 | n = 0; | |
7490 | for (i = 0; i < m; i += 1) | |
7491 | { | |
7492 | switch (exp->elts[pc].opcode) | |
7493 | { | |
7494 | default: | |
7495 | n += 1; | |
7496 | break; | |
7497 | case OP_CHOICES: | |
7498 | n += exp->elts[pc + 1].longconst; | |
7499 | break; | |
7500 | } | |
7501 | ada_evaluate_subexp (NULL, exp, &pc, EVAL_SKIP); | |
7502 | } | |
7503 | return n; | |
7504 | } | |
7505 | ||
7506 | /* Assign the result of evaluating EXP starting at *POS to the INDEXth | |
7507 | component of LHS (a simple array or a record), updating *POS past | |
7508 | the expression, assuming that LHS is contained in CONTAINER. Does | |
7509 | not modify the inferior's memory, nor does it modify LHS (unless | |
7510 | LHS == CONTAINER). */ | |
7511 | ||
7512 | static void | |
7513 | assign_component (struct value *container, struct value *lhs, LONGEST index, | |
7514 | struct expression *exp, int *pos) | |
7515 | { | |
7516 | struct value *mark = value_mark (); | |
7517 | struct value *elt; | |
7518 | if (TYPE_CODE (value_type (lhs)) == TYPE_CODE_ARRAY) | |
7519 | { | |
7520 | struct value *index_val = value_from_longest (builtin_type_int, index); | |
7521 | elt = unwrap_value (ada_value_subscript (lhs, 1, &index_val)); | |
7522 | } | |
7523 | else | |
7524 | { | |
7525 | elt = ada_index_struct_field (index, lhs, 0, value_type (lhs)); | |
7526 | elt = ada_to_fixed_value (unwrap_value (elt)); | |
7527 | } | |
7528 | ||
7529 | if (exp->elts[*pos].opcode == OP_AGGREGATE) | |
7530 | assign_aggregate (container, elt, exp, pos, EVAL_NORMAL); | |
7531 | else | |
7532 | value_assign_to_component (container, elt, | |
7533 | ada_evaluate_subexp (NULL, exp, pos, | |
7534 | EVAL_NORMAL)); | |
7535 | ||
7536 | value_free_to_mark (mark); | |
7537 | } | |
7538 | ||
7539 | /* Assuming that LHS represents an lvalue having a record or array | |
7540 | type, and EXP->ELTS[*POS] is an OP_AGGREGATE, evaluate an assignment | |
7541 | of that aggregate's value to LHS, advancing *POS past the | |
7542 | aggregate. NOSIDE is as for evaluate_subexp. CONTAINER is an | |
7543 | lvalue containing LHS (possibly LHS itself). Does not modify | |
7544 | the inferior's memory, nor does it modify the contents of | |
7545 | LHS (unless == CONTAINER). Returns the modified CONTAINER. */ | |
7546 | ||
7547 | static struct value * | |
7548 | assign_aggregate (struct value *container, | |
7549 | struct value *lhs, struct expression *exp, | |
7550 | int *pos, enum noside noside) | |
7551 | { | |
7552 | struct type *lhs_type; | |
7553 | int n = exp->elts[*pos+1].longconst; | |
7554 | LONGEST low_index, high_index; | |
7555 | int num_specs; | |
7556 | LONGEST *indices; | |
7557 | int max_indices, num_indices; | |
7558 | int is_array_aggregate; | |
7559 | int i; | |
7560 | struct value *mark = value_mark (); | |
7561 | ||
7562 | *pos += 3; | |
7563 | if (noside != EVAL_NORMAL) | |
7564 | { | |
7565 | int i; | |
7566 | for (i = 0; i < n; i += 1) | |
7567 | ada_evaluate_subexp (NULL, exp, pos, noside); | |
7568 | return container; | |
7569 | } | |
7570 | ||
7571 | container = ada_coerce_ref (container); | |
7572 | if (ada_is_direct_array_type (value_type (container))) | |
7573 | container = ada_coerce_to_simple_array (container); | |
7574 | lhs = ada_coerce_ref (lhs); | |
7575 | if (!deprecated_value_modifiable (lhs)) | |
7576 | error (_("Left operand of assignment is not a modifiable lvalue.")); | |
7577 | ||
7578 | lhs_type = value_type (lhs); | |
7579 | if (ada_is_direct_array_type (lhs_type)) | |
7580 | { | |
7581 | lhs = ada_coerce_to_simple_array (lhs); | |
7582 | lhs_type = value_type (lhs); | |
7583 | low_index = TYPE_ARRAY_LOWER_BOUND_VALUE (lhs_type); | |
7584 | high_index = TYPE_ARRAY_UPPER_BOUND_VALUE (lhs_type); | |
7585 | is_array_aggregate = 1; | |
7586 | } | |
7587 | else if (TYPE_CODE (lhs_type) == TYPE_CODE_STRUCT) | |
7588 | { | |
7589 | low_index = 0; | |
7590 | high_index = num_visible_fields (lhs_type) - 1; | |
7591 | is_array_aggregate = 0; | |
7592 | } | |
7593 | else | |
7594 | error (_("Left-hand side must be array or record.")); | |
7595 | ||
7596 | num_specs = num_component_specs (exp, *pos - 3); | |
7597 | max_indices = 4 * num_specs + 4; | |
7598 | indices = alloca (max_indices * sizeof (indices[0])); | |
7599 | indices[0] = indices[1] = low_index - 1; | |
7600 | indices[2] = indices[3] = high_index + 1; | |
7601 | num_indices = 4; | |
7602 | ||
7603 | for (i = 0; i < n; i += 1) | |
7604 | { | |
7605 | switch (exp->elts[*pos].opcode) | |
7606 | { | |
7607 | case OP_CHOICES: | |
7608 | aggregate_assign_from_choices (container, lhs, exp, pos, indices, | |
7609 | &num_indices, max_indices, | |
7610 | low_index, high_index); | |
7611 | break; | |
7612 | case OP_POSITIONAL: | |
7613 | aggregate_assign_positional (container, lhs, exp, pos, indices, | |
7614 | &num_indices, max_indices, | |
7615 | low_index, high_index); | |
7616 | break; | |
7617 | case OP_OTHERS: | |
7618 | if (i != n-1) | |
7619 | error (_("Misplaced 'others' clause")); | |
7620 | aggregate_assign_others (container, lhs, exp, pos, indices, | |
7621 | num_indices, low_index, high_index); | |
7622 | break; | |
7623 | default: | |
7624 | error (_("Internal error: bad aggregate clause")); | |
7625 | } | |
7626 | } | |
7627 | ||
7628 | return container; | |
7629 | } | |
7630 | ||
7631 | /* Assign into the component of LHS indexed by the OP_POSITIONAL | |
7632 | construct at *POS, updating *POS past the construct, given that | |
7633 | the positions are relative to lower bound LOW, where HIGH is the | |
7634 | upper bound. Record the position in INDICES[0 .. MAX_INDICES-1] | |
7635 | updating *NUM_INDICES as needed. CONTAINER is as for | |
7636 | assign_aggregate. */ | |
7637 | static void | |
7638 | aggregate_assign_positional (struct value *container, | |
7639 | struct value *lhs, struct expression *exp, | |
7640 | int *pos, LONGEST *indices, int *num_indices, | |
7641 | int max_indices, LONGEST low, LONGEST high) | |
7642 | { | |
7643 | LONGEST ind = longest_to_int (exp->elts[*pos + 1].longconst) + low; | |
7644 | ||
7645 | if (ind - 1 == high) | |
e1d5a0d2 | 7646 | warning (_("Extra components in aggregate ignored.")); |
52ce6436 PH |
7647 | if (ind <= high) |
7648 | { | |
7649 | add_component_interval (ind, ind, indices, num_indices, max_indices); | |
7650 | *pos += 3; | |
7651 | assign_component (container, lhs, ind, exp, pos); | |
7652 | } | |
7653 | else | |
7654 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
7655 | } | |
7656 | ||
7657 | /* Assign into the components of LHS indexed by the OP_CHOICES | |
7658 | construct at *POS, updating *POS past the construct, given that | |
7659 | the allowable indices are LOW..HIGH. Record the indices assigned | |
7660 | to in INDICES[0 .. MAX_INDICES-1], updating *NUM_INDICES as | |
7661 | needed. CONTAINER is as for assign_aggregate. */ | |
7662 | static void | |
7663 | aggregate_assign_from_choices (struct value *container, | |
7664 | struct value *lhs, struct expression *exp, | |
7665 | int *pos, LONGEST *indices, int *num_indices, | |
7666 | int max_indices, LONGEST low, LONGEST high) | |
7667 | { | |
7668 | int j; | |
7669 | int n_choices = longest_to_int (exp->elts[*pos+1].longconst); | |
7670 | int choice_pos, expr_pc; | |
7671 | int is_array = ada_is_direct_array_type (value_type (lhs)); | |
7672 | ||
7673 | choice_pos = *pos += 3; | |
7674 | ||
7675 | for (j = 0; j < n_choices; j += 1) | |
7676 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
7677 | expr_pc = *pos; | |
7678 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
7679 | ||
7680 | for (j = 0; j < n_choices; j += 1) | |
7681 | { | |
7682 | LONGEST lower, upper; | |
7683 | enum exp_opcode op = exp->elts[choice_pos].opcode; | |
7684 | if (op == OP_DISCRETE_RANGE) | |
7685 | { | |
7686 | choice_pos += 1; | |
7687 | lower = value_as_long (ada_evaluate_subexp (NULL, exp, pos, | |
7688 | EVAL_NORMAL)); | |
7689 | upper = value_as_long (ada_evaluate_subexp (NULL, exp, pos, | |
7690 | EVAL_NORMAL)); | |
7691 | } | |
7692 | else if (is_array) | |
7693 | { | |
7694 | lower = value_as_long (ada_evaluate_subexp (NULL, exp, &choice_pos, | |
7695 | EVAL_NORMAL)); | |
7696 | upper = lower; | |
7697 | } | |
7698 | else | |
7699 | { | |
7700 | int ind; | |
7701 | char *name; | |
7702 | switch (op) | |
7703 | { | |
7704 | case OP_NAME: | |
7705 | name = &exp->elts[choice_pos + 2].string; | |
7706 | break; | |
7707 | case OP_VAR_VALUE: | |
7708 | name = SYMBOL_NATURAL_NAME (exp->elts[choice_pos + 2].symbol); | |
7709 | break; | |
7710 | default: | |
7711 | error (_("Invalid record component association.")); | |
7712 | } | |
7713 | ada_evaluate_subexp (NULL, exp, &choice_pos, EVAL_SKIP); | |
7714 | ind = 0; | |
7715 | if (! find_struct_field (name, value_type (lhs), 0, | |
7716 | NULL, NULL, NULL, NULL, &ind)) | |
7717 | error (_("Unknown component name: %s."), name); | |
7718 | lower = upper = ind; | |
7719 | } | |
7720 | ||
7721 | if (lower <= upper && (lower < low || upper > high)) | |
7722 | error (_("Index in component association out of bounds.")); | |
7723 | ||
7724 | add_component_interval (lower, upper, indices, num_indices, | |
7725 | max_indices); | |
7726 | while (lower <= upper) | |
7727 | { | |
7728 | int pos1; | |
7729 | pos1 = expr_pc; | |
7730 | assign_component (container, lhs, lower, exp, &pos1); | |
7731 | lower += 1; | |
7732 | } | |
7733 | } | |
7734 | } | |
7735 | ||
7736 | /* Assign the value of the expression in the OP_OTHERS construct in | |
7737 | EXP at *POS into the components of LHS indexed from LOW .. HIGH that | |
7738 | have not been previously assigned. The index intervals already assigned | |
7739 | are in INDICES[0 .. NUM_INDICES-1]. Updates *POS to after the | |
7740 | OP_OTHERS clause. CONTAINER is as for assign_aggregate*/ | |
7741 | static void | |
7742 | aggregate_assign_others (struct value *container, | |
7743 | struct value *lhs, struct expression *exp, | |
7744 | int *pos, LONGEST *indices, int num_indices, | |
7745 | LONGEST low, LONGEST high) | |
7746 | { | |
7747 | int i; | |
7748 | int expr_pc = *pos+1; | |
7749 | ||
7750 | for (i = 0; i < num_indices - 2; i += 2) | |
7751 | { | |
7752 | LONGEST ind; | |
7753 | for (ind = indices[i + 1] + 1; ind < indices[i + 2]; ind += 1) | |
7754 | { | |
7755 | int pos; | |
7756 | pos = expr_pc; | |
7757 | assign_component (container, lhs, ind, exp, &pos); | |
7758 | } | |
7759 | } | |
7760 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
7761 | } | |
7762 | ||
7763 | /* Add the interval [LOW .. HIGH] to the sorted set of intervals | |
7764 | [ INDICES[0] .. INDICES[1] ],..., [ INDICES[*SIZE-2] .. INDICES[*SIZE-1] ], | |
7765 | modifying *SIZE as needed. It is an error if *SIZE exceeds | |
7766 | MAX_SIZE. The resulting intervals do not overlap. */ | |
7767 | static void | |
7768 | add_component_interval (LONGEST low, LONGEST high, | |
7769 | LONGEST* indices, int *size, int max_size) | |
7770 | { | |
7771 | int i, j; | |
7772 | for (i = 0; i < *size; i += 2) { | |
7773 | if (high >= indices[i] && low <= indices[i + 1]) | |
7774 | { | |
7775 | int kh; | |
7776 | for (kh = i + 2; kh < *size; kh += 2) | |
7777 | if (high < indices[kh]) | |
7778 | break; | |
7779 | if (low < indices[i]) | |
7780 | indices[i] = low; | |
7781 | indices[i + 1] = indices[kh - 1]; | |
7782 | if (high > indices[i + 1]) | |
7783 | indices[i + 1] = high; | |
7784 | memcpy (indices + i + 2, indices + kh, *size - kh); | |
7785 | *size -= kh - i - 2; | |
7786 | return; | |
7787 | } | |
7788 | else if (high < indices[i]) | |
7789 | break; | |
7790 | } | |
7791 | ||
7792 | if (*size == max_size) | |
7793 | error (_("Internal error: miscounted aggregate components.")); | |
7794 | *size += 2; | |
7795 | for (j = *size-1; j >= i+2; j -= 1) | |
7796 | indices[j] = indices[j - 2]; | |
7797 | indices[i] = low; | |
7798 | indices[i + 1] = high; | |
7799 | } | |
7800 | ||
7801 | static struct value * | |
ebf56fd3 | 7802 | ada_evaluate_subexp (struct type *expect_type, struct expression *exp, |
4c4b4cd2 | 7803 | int *pos, enum noside noside) |
14f9c5c9 AS |
7804 | { |
7805 | enum exp_opcode op; | |
14f9c5c9 AS |
7806 | int tem, tem2, tem3; |
7807 | int pc; | |
7808 | struct value *arg1 = NULL, *arg2 = NULL, *arg3; | |
7809 | struct type *type; | |
52ce6436 | 7810 | int nargs, oplen; |
d2e4a39e | 7811 | struct value **argvec; |
14f9c5c9 | 7812 | |
d2e4a39e AS |
7813 | pc = *pos; |
7814 | *pos += 1; | |
14f9c5c9 AS |
7815 | op = exp->elts[pc].opcode; |
7816 | ||
d2e4a39e | 7817 | switch (op) |
14f9c5c9 AS |
7818 | { |
7819 | default: | |
7820 | *pos -= 1; | |
d2e4a39e | 7821 | return |
4c4b4cd2 PH |
7822 | unwrap_value (evaluate_subexp_standard |
7823 | (expect_type, exp, pos, noside)); | |
7824 | ||
7825 | case OP_STRING: | |
7826 | { | |
76a01679 JB |
7827 | struct value *result; |
7828 | *pos -= 1; | |
7829 | result = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
7830 | /* The result type will have code OP_STRING, bashed there from | |
7831 | OP_ARRAY. Bash it back. */ | |
df407dfe AC |
7832 | if (TYPE_CODE (value_type (result)) == TYPE_CODE_STRING) |
7833 | TYPE_CODE (value_type (result)) = TYPE_CODE_ARRAY; | |
76a01679 | 7834 | return result; |
4c4b4cd2 | 7835 | } |
14f9c5c9 AS |
7836 | |
7837 | case UNOP_CAST: | |
7838 | (*pos) += 2; | |
7839 | type = exp->elts[pc + 1].type; | |
7840 | arg1 = evaluate_subexp (type, exp, pos, noside); | |
7841 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 7842 | goto nosideret; |
df407dfe | 7843 | if (type != ada_check_typedef (value_type (arg1))) |
4c4b4cd2 PH |
7844 | { |
7845 | if (ada_is_fixed_point_type (type)) | |
7846 | arg1 = cast_to_fixed (type, arg1); | |
df407dfe | 7847 | else if (ada_is_fixed_point_type (value_type (arg1))) |
4c4b4cd2 PH |
7848 | arg1 = value_cast (type, cast_from_fixed_to_double (arg1)); |
7849 | else if (VALUE_LVAL (arg1) == lval_memory) | |
7850 | { | |
7851 | /* This is in case of the really obscure (and undocumented, | |
7852 | but apparently expected) case of (Foo) Bar.all, where Bar | |
7853 | is an integer constant and Foo is a dynamic-sized type. | |
7854 | If we don't do this, ARG1 will simply be relabeled with | |
7855 | TYPE. */ | |
7856 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
7857 | return value_zero (to_static_fixed_type (type), not_lval); | |
7858 | arg1 = | |
7859 | ada_to_fixed_value_create | |
df407dfe | 7860 | (type, VALUE_ADDRESS (arg1) + value_offset (arg1), 0); |
4c4b4cd2 PH |
7861 | } |
7862 | else | |
7863 | arg1 = value_cast (type, arg1); | |
7864 | } | |
14f9c5c9 AS |
7865 | return arg1; |
7866 | ||
4c4b4cd2 PH |
7867 | case UNOP_QUAL: |
7868 | (*pos) += 2; | |
7869 | type = exp->elts[pc + 1].type; | |
7870 | return ada_evaluate_subexp (type, exp, pos, noside); | |
7871 | ||
14f9c5c9 AS |
7872 | case BINOP_ASSIGN: |
7873 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
52ce6436 PH |
7874 | if (exp->elts[*pos].opcode == OP_AGGREGATE) |
7875 | { | |
7876 | arg1 = assign_aggregate (arg1, arg1, exp, pos, noside); | |
7877 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) | |
7878 | return arg1; | |
7879 | return ada_value_assign (arg1, arg1); | |
7880 | } | |
df407dfe | 7881 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
14f9c5c9 | 7882 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 | 7883 | return arg1; |
df407dfe AC |
7884 | if (ada_is_fixed_point_type (value_type (arg1))) |
7885 | arg2 = cast_to_fixed (value_type (arg1), arg2); | |
7886 | else if (ada_is_fixed_point_type (value_type (arg2))) | |
76a01679 | 7887 | error |
323e0a4a | 7888 | (_("Fixed-point values must be assigned to fixed-point variables")); |
d2e4a39e | 7889 | else |
df407dfe | 7890 | arg2 = coerce_for_assign (value_type (arg1), arg2); |
4c4b4cd2 | 7891 | return ada_value_assign (arg1, arg2); |
14f9c5c9 AS |
7892 | |
7893 | case BINOP_ADD: | |
7894 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
7895 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
7896 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 7897 | goto nosideret; |
df407dfe AC |
7898 | if ((ada_is_fixed_point_type (value_type (arg1)) |
7899 | || ada_is_fixed_point_type (value_type (arg2))) | |
7900 | && value_type (arg1) != value_type (arg2)) | |
323e0a4a | 7901 | error (_("Operands of fixed-point addition must have the same type")); |
df407dfe | 7902 | return value_cast (value_type (arg1), value_add (arg1, arg2)); |
14f9c5c9 AS |
7903 | |
7904 | case BINOP_SUB: | |
7905 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
7906 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
7907 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 7908 | goto nosideret; |
df407dfe AC |
7909 | if ((ada_is_fixed_point_type (value_type (arg1)) |
7910 | || ada_is_fixed_point_type (value_type (arg2))) | |
7911 | && value_type (arg1) != value_type (arg2)) | |
323e0a4a | 7912 | error (_("Operands of fixed-point subtraction must have the same type")); |
df407dfe | 7913 | return value_cast (value_type (arg1), value_sub (arg1, arg2)); |
14f9c5c9 AS |
7914 | |
7915 | case BINOP_MUL: | |
7916 | case BINOP_DIV: | |
7917 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7918 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7919 | if (noside == EVAL_SKIP) | |
4c4b4cd2 PH |
7920 | goto nosideret; |
7921 | else if (noside == EVAL_AVOID_SIDE_EFFECTS | |
76a01679 | 7922 | && (op == BINOP_DIV || op == BINOP_REM || op == BINOP_MOD)) |
df407dfe | 7923 | return value_zero (value_type (arg1), not_lval); |
14f9c5c9 | 7924 | else |
4c4b4cd2 | 7925 | { |
df407dfe | 7926 | if (ada_is_fixed_point_type (value_type (arg1))) |
4c4b4cd2 | 7927 | arg1 = cast_from_fixed_to_double (arg1); |
df407dfe | 7928 | if (ada_is_fixed_point_type (value_type (arg2))) |
4c4b4cd2 PH |
7929 | arg2 = cast_from_fixed_to_double (arg2); |
7930 | return ada_value_binop (arg1, arg2, op); | |
7931 | } | |
7932 | ||
7933 | case BINOP_REM: | |
7934 | case BINOP_MOD: | |
7935 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7936 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7937 | if (noside == EVAL_SKIP) | |
76a01679 | 7938 | goto nosideret; |
4c4b4cd2 | 7939 | else if (noside == EVAL_AVOID_SIDE_EFFECTS |
76a01679 | 7940 | && (op == BINOP_DIV || op == BINOP_REM || op == BINOP_MOD)) |
df407dfe | 7941 | return value_zero (value_type (arg1), not_lval); |
14f9c5c9 | 7942 | else |
76a01679 | 7943 | return ada_value_binop (arg1, arg2, op); |
14f9c5c9 | 7944 | |
4c4b4cd2 PH |
7945 | case BINOP_EQUAL: |
7946 | case BINOP_NOTEQUAL: | |
14f9c5c9 | 7947 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
df407dfe | 7948 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
14f9c5c9 | 7949 | if (noside == EVAL_SKIP) |
76a01679 | 7950 | goto nosideret; |
4c4b4cd2 | 7951 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 7952 | tem = 0; |
4c4b4cd2 | 7953 | else |
76a01679 | 7954 | tem = ada_value_equal (arg1, arg2); |
4c4b4cd2 | 7955 | if (op == BINOP_NOTEQUAL) |
76a01679 | 7956 | tem = !tem; |
4c4b4cd2 PH |
7957 | return value_from_longest (LA_BOOL_TYPE, (LONGEST) tem); |
7958 | ||
7959 | case UNOP_NEG: | |
7960 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7961 | if (noside == EVAL_SKIP) | |
7962 | goto nosideret; | |
df407dfe AC |
7963 | else if (ada_is_fixed_point_type (value_type (arg1))) |
7964 | return value_cast (value_type (arg1), value_neg (arg1)); | |
14f9c5c9 | 7965 | else |
4c4b4cd2 PH |
7966 | return value_neg (arg1); |
7967 | ||
14f9c5c9 AS |
7968 | case OP_VAR_VALUE: |
7969 | *pos -= 1; | |
7970 | if (noside == EVAL_SKIP) | |
4c4b4cd2 PH |
7971 | { |
7972 | *pos += 4; | |
7973 | goto nosideret; | |
7974 | } | |
7975 | else if (SYMBOL_DOMAIN (exp->elts[pc + 2].symbol) == UNDEF_DOMAIN) | |
76a01679 JB |
7976 | /* Only encountered when an unresolved symbol occurs in a |
7977 | context other than a function call, in which case, it is | |
52ce6436 | 7978 | invalid. */ |
323e0a4a | 7979 | error (_("Unexpected unresolved symbol, %s, during evaluation"), |
4c4b4cd2 | 7980 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
14f9c5c9 | 7981 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 PH |
7982 | { |
7983 | *pos += 4; | |
7984 | return value_zero | |
7985 | (to_static_fixed_type | |
7986 | (static_unwrap_type (SYMBOL_TYPE (exp->elts[pc + 2].symbol))), | |
7987 | not_lval); | |
7988 | } | |
d2e4a39e | 7989 | else |
4c4b4cd2 PH |
7990 | { |
7991 | arg1 = | |
7992 | unwrap_value (evaluate_subexp_standard | |
7993 | (expect_type, exp, pos, noside)); | |
7994 | return ada_to_fixed_value (arg1); | |
7995 | } | |
7996 | ||
7997 | case OP_FUNCALL: | |
7998 | (*pos) += 2; | |
7999 | ||
8000 | /* Allocate arg vector, including space for the function to be | |
8001 | called in argvec[0] and a terminating NULL. */ | |
8002 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
8003 | argvec = | |
8004 | (struct value **) alloca (sizeof (struct value *) * (nargs + 2)); | |
8005 | ||
8006 | if (exp->elts[*pos].opcode == OP_VAR_VALUE | |
76a01679 | 8007 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
323e0a4a | 8008 | error (_("Unexpected unresolved symbol, %s, during evaluation"), |
4c4b4cd2 PH |
8009 | SYMBOL_PRINT_NAME (exp->elts[pc + 5].symbol)); |
8010 | else | |
8011 | { | |
8012 | for (tem = 0; tem <= nargs; tem += 1) | |
8013 | argvec[tem] = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8014 | argvec[tem] = 0; | |
8015 | ||
8016 | if (noside == EVAL_SKIP) | |
8017 | goto nosideret; | |
8018 | } | |
8019 | ||
df407dfe | 8020 | if (ada_is_packed_array_type (desc_base_type (value_type (argvec[0])))) |
4c4b4cd2 | 8021 | argvec[0] = ada_coerce_to_simple_array (argvec[0]); |
df407dfe AC |
8022 | else if (TYPE_CODE (value_type (argvec[0])) == TYPE_CODE_REF |
8023 | || (TYPE_CODE (value_type (argvec[0])) == TYPE_CODE_ARRAY | |
76a01679 | 8024 | && VALUE_LVAL (argvec[0]) == lval_memory)) |
4c4b4cd2 PH |
8025 | argvec[0] = value_addr (argvec[0]); |
8026 | ||
df407dfe | 8027 | type = ada_check_typedef (value_type (argvec[0])); |
4c4b4cd2 PH |
8028 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
8029 | { | |
61ee279c | 8030 | switch (TYPE_CODE (ada_check_typedef (TYPE_TARGET_TYPE (type)))) |
4c4b4cd2 PH |
8031 | { |
8032 | case TYPE_CODE_FUNC: | |
61ee279c | 8033 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
4c4b4cd2 PH |
8034 | break; |
8035 | case TYPE_CODE_ARRAY: | |
8036 | break; | |
8037 | case TYPE_CODE_STRUCT: | |
8038 | if (noside != EVAL_AVOID_SIDE_EFFECTS) | |
8039 | argvec[0] = ada_value_ind (argvec[0]); | |
61ee279c | 8040 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
4c4b4cd2 PH |
8041 | break; |
8042 | default: | |
323e0a4a | 8043 | error (_("cannot subscript or call something of type `%s'"), |
df407dfe | 8044 | ada_type_name (value_type (argvec[0]))); |
4c4b4cd2 PH |
8045 | break; |
8046 | } | |
8047 | } | |
8048 | ||
8049 | switch (TYPE_CODE (type)) | |
8050 | { | |
8051 | case TYPE_CODE_FUNC: | |
8052 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8053 | return allocate_value (TYPE_TARGET_TYPE (type)); | |
8054 | return call_function_by_hand (argvec[0], nargs, argvec + 1); | |
8055 | case TYPE_CODE_STRUCT: | |
8056 | { | |
8057 | int arity; | |
8058 | ||
4c4b4cd2 PH |
8059 | arity = ada_array_arity (type); |
8060 | type = ada_array_element_type (type, nargs); | |
8061 | if (type == NULL) | |
323e0a4a | 8062 | error (_("cannot subscript or call a record")); |
4c4b4cd2 | 8063 | if (arity != nargs) |
323e0a4a | 8064 | error (_("wrong number of subscripts; expecting %d"), arity); |
4c4b4cd2 PH |
8065 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
8066 | return allocate_value (ada_aligned_type (type)); | |
8067 | return | |
8068 | unwrap_value (ada_value_subscript | |
8069 | (argvec[0], nargs, argvec + 1)); | |
8070 | } | |
8071 | case TYPE_CODE_ARRAY: | |
8072 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8073 | { | |
8074 | type = ada_array_element_type (type, nargs); | |
8075 | if (type == NULL) | |
323e0a4a | 8076 | error (_("element type of array unknown")); |
4c4b4cd2 PH |
8077 | else |
8078 | return allocate_value (ada_aligned_type (type)); | |
8079 | } | |
8080 | return | |
8081 | unwrap_value (ada_value_subscript | |
8082 | (ada_coerce_to_simple_array (argvec[0]), | |
8083 | nargs, argvec + 1)); | |
8084 | case TYPE_CODE_PTR: /* Pointer to array */ | |
8085 | type = to_fixed_array_type (TYPE_TARGET_TYPE (type), NULL, 1); | |
8086 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8087 | { | |
8088 | type = ada_array_element_type (type, nargs); | |
8089 | if (type == NULL) | |
323e0a4a | 8090 | error (_("element type of array unknown")); |
4c4b4cd2 PH |
8091 | else |
8092 | return allocate_value (ada_aligned_type (type)); | |
8093 | } | |
8094 | return | |
8095 | unwrap_value (ada_value_ptr_subscript (argvec[0], type, | |
8096 | nargs, argvec + 1)); | |
8097 | ||
8098 | default: | |
e1d5a0d2 PH |
8099 | error (_("Attempt to index or call something other than an " |
8100 | "array or function")); | |
4c4b4cd2 PH |
8101 | } |
8102 | ||
8103 | case TERNOP_SLICE: | |
8104 | { | |
8105 | struct value *array = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8106 | struct value *low_bound_val = | |
8107 | evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
714e53ab PH |
8108 | struct value *high_bound_val = |
8109 | evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8110 | LONGEST low_bound; | |
8111 | LONGEST high_bound; | |
994b9211 AC |
8112 | low_bound_val = coerce_ref (low_bound_val); |
8113 | high_bound_val = coerce_ref (high_bound_val); | |
714e53ab PH |
8114 | low_bound = pos_atr (low_bound_val); |
8115 | high_bound = pos_atr (high_bound_val); | |
963a6417 | 8116 | |
4c4b4cd2 PH |
8117 | if (noside == EVAL_SKIP) |
8118 | goto nosideret; | |
8119 | ||
4c4b4cd2 PH |
8120 | /* If this is a reference to an aligner type, then remove all |
8121 | the aligners. */ | |
df407dfe AC |
8122 | if (TYPE_CODE (value_type (array)) == TYPE_CODE_REF |
8123 | && ada_is_aligner_type (TYPE_TARGET_TYPE (value_type (array)))) | |
8124 | TYPE_TARGET_TYPE (value_type (array)) = | |
8125 | ada_aligned_type (TYPE_TARGET_TYPE (value_type (array))); | |
4c4b4cd2 | 8126 | |
df407dfe | 8127 | if (ada_is_packed_array_type (value_type (array))) |
323e0a4a | 8128 | error (_("cannot slice a packed array")); |
4c4b4cd2 PH |
8129 | |
8130 | /* If this is a reference to an array or an array lvalue, | |
8131 | convert to a pointer. */ | |
df407dfe AC |
8132 | if (TYPE_CODE (value_type (array)) == TYPE_CODE_REF |
8133 | || (TYPE_CODE (value_type (array)) == TYPE_CODE_ARRAY | |
4c4b4cd2 PH |
8134 | && VALUE_LVAL (array) == lval_memory)) |
8135 | array = value_addr (array); | |
8136 | ||
1265e4aa | 8137 | if (noside == EVAL_AVOID_SIDE_EFFECTS |
61ee279c | 8138 | && ada_is_array_descriptor_type (ada_check_typedef |
df407dfe | 8139 | (value_type (array)))) |
0b5d8877 | 8140 | return empty_array (ada_type_of_array (array, 0), low_bound); |
4c4b4cd2 PH |
8141 | |
8142 | array = ada_coerce_to_simple_array_ptr (array); | |
8143 | ||
714e53ab PH |
8144 | /* If we have more than one level of pointer indirection, |
8145 | dereference the value until we get only one level. */ | |
df407dfe AC |
8146 | while (TYPE_CODE (value_type (array)) == TYPE_CODE_PTR |
8147 | && (TYPE_CODE (TYPE_TARGET_TYPE (value_type (array))) | |
714e53ab PH |
8148 | == TYPE_CODE_PTR)) |
8149 | array = value_ind (array); | |
8150 | ||
8151 | /* Make sure we really do have an array type before going further, | |
8152 | to avoid a SEGV when trying to get the index type or the target | |
8153 | type later down the road if the debug info generated by | |
8154 | the compiler is incorrect or incomplete. */ | |
df407dfe | 8155 | if (!ada_is_simple_array_type (value_type (array))) |
323e0a4a | 8156 | error (_("cannot take slice of non-array")); |
714e53ab | 8157 | |
df407dfe | 8158 | if (TYPE_CODE (value_type (array)) == TYPE_CODE_PTR) |
4c4b4cd2 | 8159 | { |
0b5d8877 | 8160 | if (high_bound < low_bound || noside == EVAL_AVOID_SIDE_EFFECTS) |
df407dfe | 8161 | return empty_array (TYPE_TARGET_TYPE (value_type (array)), |
4c4b4cd2 PH |
8162 | low_bound); |
8163 | else | |
8164 | { | |
8165 | struct type *arr_type0 = | |
df407dfe | 8166 | to_fixed_array_type (TYPE_TARGET_TYPE (value_type (array)), |
4c4b4cd2 | 8167 | NULL, 1); |
0b5d8877 | 8168 | return ada_value_slice_ptr (array, arr_type0, |
529cad9c PH |
8169 | longest_to_int (low_bound), |
8170 | longest_to_int (high_bound)); | |
4c4b4cd2 PH |
8171 | } |
8172 | } | |
8173 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8174 | return array; | |
8175 | else if (high_bound < low_bound) | |
df407dfe | 8176 | return empty_array (value_type (array), low_bound); |
4c4b4cd2 | 8177 | else |
529cad9c PH |
8178 | return ada_value_slice (array, longest_to_int (low_bound), |
8179 | longest_to_int (high_bound)); | |
4c4b4cd2 | 8180 | } |
14f9c5c9 | 8181 | |
4c4b4cd2 PH |
8182 | case UNOP_IN_RANGE: |
8183 | (*pos) += 2; | |
8184 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8185 | type = exp->elts[pc + 1].type; | |
14f9c5c9 | 8186 | |
14f9c5c9 | 8187 | if (noside == EVAL_SKIP) |
4c4b4cd2 | 8188 | goto nosideret; |
14f9c5c9 | 8189 | |
4c4b4cd2 PH |
8190 | switch (TYPE_CODE (type)) |
8191 | { | |
8192 | default: | |
e1d5a0d2 PH |
8193 | lim_warning (_("Membership test incompletely implemented; " |
8194 | "always returns true")); | |
4c4b4cd2 PH |
8195 | return value_from_longest (builtin_type_int, (LONGEST) 1); |
8196 | ||
8197 | case TYPE_CODE_RANGE: | |
76a01679 | 8198 | arg2 = value_from_longest (builtin_type_int, TYPE_LOW_BOUND (type)); |
4c4b4cd2 PH |
8199 | arg3 = value_from_longest (builtin_type_int, |
8200 | TYPE_HIGH_BOUND (type)); | |
8201 | return | |
8202 | value_from_longest (builtin_type_int, | |
8203 | (value_less (arg1, arg3) | |
8204 | || value_equal (arg1, arg3)) | |
8205 | && (value_less (arg2, arg1) | |
8206 | || value_equal (arg2, arg1))); | |
8207 | } | |
8208 | ||
8209 | case BINOP_IN_BOUNDS: | |
14f9c5c9 | 8210 | (*pos) += 2; |
4c4b4cd2 PH |
8211 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
8212 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
14f9c5c9 | 8213 | |
4c4b4cd2 PH |
8214 | if (noside == EVAL_SKIP) |
8215 | goto nosideret; | |
14f9c5c9 | 8216 | |
4c4b4cd2 PH |
8217 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
8218 | return value_zero (builtin_type_int, not_lval); | |
14f9c5c9 | 8219 | |
4c4b4cd2 | 8220 | tem = longest_to_int (exp->elts[pc + 1].longconst); |
14f9c5c9 | 8221 | |
df407dfe | 8222 | if (tem < 1 || tem > ada_array_arity (value_type (arg2))) |
323e0a4a | 8223 | error (_("invalid dimension number to 'range")); |
14f9c5c9 | 8224 | |
4c4b4cd2 PH |
8225 | arg3 = ada_array_bound (arg2, tem, 1); |
8226 | arg2 = ada_array_bound (arg2, tem, 0); | |
d2e4a39e | 8227 | |
4c4b4cd2 PH |
8228 | return |
8229 | value_from_longest (builtin_type_int, | |
8230 | (value_less (arg1, arg3) | |
8231 | || value_equal (arg1, arg3)) | |
8232 | && (value_less (arg2, arg1) | |
8233 | || value_equal (arg2, arg1))); | |
8234 | ||
8235 | case TERNOP_IN_RANGE: | |
8236 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8237 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8238 | arg3 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8239 | ||
8240 | if (noside == EVAL_SKIP) | |
8241 | goto nosideret; | |
8242 | ||
8243 | return | |
8244 | value_from_longest (builtin_type_int, | |
8245 | (value_less (arg1, arg3) | |
8246 | || value_equal (arg1, arg3)) | |
8247 | && (value_less (arg2, arg1) | |
8248 | || value_equal (arg2, arg1))); | |
8249 | ||
8250 | case OP_ATR_FIRST: | |
8251 | case OP_ATR_LAST: | |
8252 | case OP_ATR_LENGTH: | |
8253 | { | |
76a01679 JB |
8254 | struct type *type_arg; |
8255 | if (exp->elts[*pos].opcode == OP_TYPE) | |
8256 | { | |
8257 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
8258 | arg1 = NULL; | |
8259 | type_arg = exp->elts[pc + 2].type; | |
8260 | } | |
8261 | else | |
8262 | { | |
8263 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8264 | type_arg = NULL; | |
8265 | } | |
8266 | ||
8267 | if (exp->elts[*pos].opcode != OP_LONG) | |
323e0a4a | 8268 | error (_("Invalid operand to '%s"), ada_attribute_name (op)); |
76a01679 JB |
8269 | tem = longest_to_int (exp->elts[*pos + 2].longconst); |
8270 | *pos += 4; | |
8271 | ||
8272 | if (noside == EVAL_SKIP) | |
8273 | goto nosideret; | |
8274 | ||
8275 | if (type_arg == NULL) | |
8276 | { | |
8277 | arg1 = ada_coerce_ref (arg1); | |
8278 | ||
df407dfe | 8279 | if (ada_is_packed_array_type (value_type (arg1))) |
76a01679 JB |
8280 | arg1 = ada_coerce_to_simple_array (arg1); |
8281 | ||
df407dfe | 8282 | if (tem < 1 || tem > ada_array_arity (value_type (arg1))) |
323e0a4a | 8283 | error (_("invalid dimension number to '%s"), |
76a01679 JB |
8284 | ada_attribute_name (op)); |
8285 | ||
8286 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8287 | { | |
df407dfe | 8288 | type = ada_index_type (value_type (arg1), tem); |
76a01679 JB |
8289 | if (type == NULL) |
8290 | error | |
323e0a4a | 8291 | (_("attempt to take bound of something that is not an array")); |
76a01679 JB |
8292 | return allocate_value (type); |
8293 | } | |
8294 | ||
8295 | switch (op) | |
8296 | { | |
8297 | default: /* Should never happen. */ | |
323e0a4a | 8298 | error (_("unexpected attribute encountered")); |
76a01679 JB |
8299 | case OP_ATR_FIRST: |
8300 | return ada_array_bound (arg1, tem, 0); | |
8301 | case OP_ATR_LAST: | |
8302 | return ada_array_bound (arg1, tem, 1); | |
8303 | case OP_ATR_LENGTH: | |
8304 | return ada_array_length (arg1, tem); | |
8305 | } | |
8306 | } | |
8307 | else if (discrete_type_p (type_arg)) | |
8308 | { | |
8309 | struct type *range_type; | |
8310 | char *name = ada_type_name (type_arg); | |
8311 | range_type = NULL; | |
8312 | if (name != NULL && TYPE_CODE (type_arg) != TYPE_CODE_ENUM) | |
8313 | range_type = | |
8314 | to_fixed_range_type (name, NULL, TYPE_OBJFILE (type_arg)); | |
8315 | if (range_type == NULL) | |
8316 | range_type = type_arg; | |
8317 | switch (op) | |
8318 | { | |
8319 | default: | |
323e0a4a | 8320 | error (_("unexpected attribute encountered")); |
76a01679 JB |
8321 | case OP_ATR_FIRST: |
8322 | return discrete_type_low_bound (range_type); | |
8323 | case OP_ATR_LAST: | |
8324 | return discrete_type_high_bound (range_type); | |
8325 | case OP_ATR_LENGTH: | |
323e0a4a | 8326 | error (_("the 'length attribute applies only to array types")); |
76a01679 JB |
8327 | } |
8328 | } | |
8329 | else if (TYPE_CODE (type_arg) == TYPE_CODE_FLT) | |
323e0a4a | 8330 | error (_("unimplemented type attribute")); |
76a01679 JB |
8331 | else |
8332 | { | |
8333 | LONGEST low, high; | |
8334 | ||
8335 | if (ada_is_packed_array_type (type_arg)) | |
8336 | type_arg = decode_packed_array_type (type_arg); | |
8337 | ||
8338 | if (tem < 1 || tem > ada_array_arity (type_arg)) | |
323e0a4a | 8339 | error (_("invalid dimension number to '%s"), |
76a01679 JB |
8340 | ada_attribute_name (op)); |
8341 | ||
8342 | type = ada_index_type (type_arg, tem); | |
8343 | if (type == NULL) | |
8344 | error | |
323e0a4a | 8345 | (_("attempt to take bound of something that is not an array")); |
76a01679 JB |
8346 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
8347 | return allocate_value (type); | |
8348 | ||
8349 | switch (op) | |
8350 | { | |
8351 | default: | |
323e0a4a | 8352 | error (_("unexpected attribute encountered")); |
76a01679 JB |
8353 | case OP_ATR_FIRST: |
8354 | low = ada_array_bound_from_type (type_arg, tem, 0, &type); | |
8355 | return value_from_longest (type, low); | |
8356 | case OP_ATR_LAST: | |
8357 | high = ada_array_bound_from_type (type_arg, tem, 1, &type); | |
8358 | return value_from_longest (type, high); | |
8359 | case OP_ATR_LENGTH: | |
8360 | low = ada_array_bound_from_type (type_arg, tem, 0, &type); | |
8361 | high = ada_array_bound_from_type (type_arg, tem, 1, NULL); | |
8362 | return value_from_longest (type, high - low + 1); | |
8363 | } | |
8364 | } | |
14f9c5c9 AS |
8365 | } |
8366 | ||
4c4b4cd2 PH |
8367 | case OP_ATR_TAG: |
8368 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8369 | if (noside == EVAL_SKIP) | |
76a01679 | 8370 | goto nosideret; |
4c4b4cd2 PH |
8371 | |
8372 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
76a01679 | 8373 | return value_zero (ada_tag_type (arg1), not_lval); |
4c4b4cd2 PH |
8374 | |
8375 | return ada_value_tag (arg1); | |
8376 | ||
8377 | case OP_ATR_MIN: | |
8378 | case OP_ATR_MAX: | |
8379 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 AS |
8380 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
8381 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8382 | if (noside == EVAL_SKIP) | |
76a01679 | 8383 | goto nosideret; |
d2e4a39e | 8384 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
df407dfe | 8385 | return value_zero (value_type (arg1), not_lval); |
14f9c5c9 | 8386 | else |
76a01679 JB |
8387 | return value_binop (arg1, arg2, |
8388 | op == OP_ATR_MIN ? BINOP_MIN : BINOP_MAX); | |
14f9c5c9 | 8389 | |
4c4b4cd2 PH |
8390 | case OP_ATR_MODULUS: |
8391 | { | |
76a01679 JB |
8392 | struct type *type_arg = exp->elts[pc + 2].type; |
8393 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
4c4b4cd2 | 8394 | |
76a01679 JB |
8395 | if (noside == EVAL_SKIP) |
8396 | goto nosideret; | |
4c4b4cd2 | 8397 | |
76a01679 | 8398 | if (!ada_is_modular_type (type_arg)) |
323e0a4a | 8399 | error (_("'modulus must be applied to modular type")); |
4c4b4cd2 | 8400 | |
76a01679 JB |
8401 | return value_from_longest (TYPE_TARGET_TYPE (type_arg), |
8402 | ada_modulus (type_arg)); | |
4c4b4cd2 PH |
8403 | } |
8404 | ||
8405 | ||
8406 | case OP_ATR_POS: | |
8407 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 AS |
8408 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
8409 | if (noside == EVAL_SKIP) | |
76a01679 | 8410 | goto nosideret; |
4c4b4cd2 | 8411 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
72d5681a | 8412 | return value_zero (builtin_type_int, not_lval); |
14f9c5c9 | 8413 | else |
76a01679 | 8414 | return value_pos_atr (arg1); |
14f9c5c9 | 8415 | |
4c4b4cd2 PH |
8416 | case OP_ATR_SIZE: |
8417 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8418 | if (noside == EVAL_SKIP) | |
76a01679 | 8419 | goto nosideret; |
4c4b4cd2 | 8420 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
72d5681a | 8421 | return value_zero (builtin_type_int, not_lval); |
4c4b4cd2 | 8422 | else |
72d5681a | 8423 | return value_from_longest (builtin_type_int, |
76a01679 | 8424 | TARGET_CHAR_BIT |
df407dfe | 8425 | * TYPE_LENGTH (value_type (arg1))); |
4c4b4cd2 PH |
8426 | |
8427 | case OP_ATR_VAL: | |
8428 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 | 8429 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
4c4b4cd2 | 8430 | type = exp->elts[pc + 2].type; |
14f9c5c9 | 8431 | if (noside == EVAL_SKIP) |
76a01679 | 8432 | goto nosideret; |
4c4b4cd2 | 8433 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 8434 | return value_zero (type, not_lval); |
4c4b4cd2 | 8435 | else |
76a01679 | 8436 | return value_val_atr (type, arg1); |
4c4b4cd2 PH |
8437 | |
8438 | case BINOP_EXP: | |
8439 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8440 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8441 | if (noside == EVAL_SKIP) | |
8442 | goto nosideret; | |
8443 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
df407dfe | 8444 | return value_zero (value_type (arg1), not_lval); |
4c4b4cd2 PH |
8445 | else |
8446 | return value_binop (arg1, arg2, op); | |
8447 | ||
8448 | case UNOP_PLUS: | |
8449 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8450 | if (noside == EVAL_SKIP) | |
8451 | goto nosideret; | |
8452 | else | |
8453 | return arg1; | |
8454 | ||
8455 | case UNOP_ABS: | |
8456 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8457 | if (noside == EVAL_SKIP) | |
8458 | goto nosideret; | |
df407dfe | 8459 | if (value_less (arg1, value_zero (value_type (arg1), not_lval))) |
4c4b4cd2 | 8460 | return value_neg (arg1); |
14f9c5c9 | 8461 | else |
4c4b4cd2 | 8462 | return arg1; |
14f9c5c9 AS |
8463 | |
8464 | case UNOP_IND: | |
8465 | if (expect_type && TYPE_CODE (expect_type) == TYPE_CODE_PTR) | |
61ee279c | 8466 | expect_type = TYPE_TARGET_TYPE (ada_check_typedef (expect_type)); |
14f9c5c9 AS |
8467 | arg1 = evaluate_subexp (expect_type, exp, pos, noside); |
8468 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 8469 | goto nosideret; |
df407dfe | 8470 | type = ada_check_typedef (value_type (arg1)); |
14f9c5c9 | 8471 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 PH |
8472 | { |
8473 | if (ada_is_array_descriptor_type (type)) | |
8474 | /* GDB allows dereferencing GNAT array descriptors. */ | |
8475 | { | |
8476 | struct type *arrType = ada_type_of_array (arg1, 0); | |
8477 | if (arrType == NULL) | |
323e0a4a | 8478 | error (_("Attempt to dereference null array pointer.")); |
00a4c844 | 8479 | return value_at_lazy (arrType, 0); |
4c4b4cd2 PH |
8480 | } |
8481 | else if (TYPE_CODE (type) == TYPE_CODE_PTR | |
8482 | || TYPE_CODE (type) == TYPE_CODE_REF | |
8483 | /* In C you can dereference an array to get the 1st elt. */ | |
8484 | || TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
714e53ab PH |
8485 | { |
8486 | type = to_static_fixed_type | |
8487 | (ada_aligned_type | |
8488 | (ada_check_typedef (TYPE_TARGET_TYPE (type)))); | |
8489 | check_size (type); | |
8490 | return value_zero (type, lval_memory); | |
8491 | } | |
4c4b4cd2 PH |
8492 | else if (TYPE_CODE (type) == TYPE_CODE_INT) |
8493 | /* GDB allows dereferencing an int. */ | |
8494 | return value_zero (builtin_type_int, lval_memory); | |
8495 | else | |
323e0a4a | 8496 | error (_("Attempt to take contents of a non-pointer value.")); |
4c4b4cd2 | 8497 | } |
76a01679 | 8498 | arg1 = ada_coerce_ref (arg1); /* FIXME: What is this for?? */ |
df407dfe | 8499 | type = ada_check_typedef (value_type (arg1)); |
d2e4a39e | 8500 | |
4c4b4cd2 PH |
8501 | if (ada_is_array_descriptor_type (type)) |
8502 | /* GDB allows dereferencing GNAT array descriptors. */ | |
8503 | return ada_coerce_to_simple_array (arg1); | |
14f9c5c9 | 8504 | else |
4c4b4cd2 | 8505 | return ada_value_ind (arg1); |
14f9c5c9 AS |
8506 | |
8507 | case STRUCTOP_STRUCT: | |
8508 | tem = longest_to_int (exp->elts[pc + 1].longconst); | |
8509 | (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); | |
8510 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8511 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 8512 | goto nosideret; |
14f9c5c9 | 8513 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 8514 | { |
df407dfe | 8515 | struct type *type1 = value_type (arg1); |
76a01679 JB |
8516 | if (ada_is_tagged_type (type1, 1)) |
8517 | { | |
8518 | type = ada_lookup_struct_elt_type (type1, | |
8519 | &exp->elts[pc + 2].string, | |
8520 | 1, 1, NULL); | |
8521 | if (type == NULL) | |
8522 | /* In this case, we assume that the field COULD exist | |
8523 | in some extension of the type. Return an object of | |
8524 | "type" void, which will match any formal | |
8525 | (see ada_type_match). */ | |
8526 | return value_zero (builtin_type_void, lval_memory); | |
8527 | } | |
8528 | else | |
8529 | type = | |
8530 | ada_lookup_struct_elt_type (type1, &exp->elts[pc + 2].string, 1, | |
8531 | 0, NULL); | |
8532 | ||
8533 | return value_zero (ada_aligned_type (type), lval_memory); | |
8534 | } | |
14f9c5c9 | 8535 | else |
76a01679 JB |
8536 | return |
8537 | ada_to_fixed_value (unwrap_value | |
8538 | (ada_value_struct_elt | |
03ee6b2e | 8539 | (arg1, &exp->elts[pc + 2].string, 0))); |
14f9c5c9 | 8540 | case OP_TYPE: |
4c4b4cd2 PH |
8541 | /* The value is not supposed to be used. This is here to make it |
8542 | easier to accommodate expressions that contain types. */ | |
14f9c5c9 AS |
8543 | (*pos) += 2; |
8544 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 8545 | goto nosideret; |
14f9c5c9 | 8546 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
a6cfbe68 | 8547 | return allocate_value (exp->elts[pc + 1].type); |
14f9c5c9 | 8548 | else |
323e0a4a | 8549 | error (_("Attempt to use a type name as an expression")); |
52ce6436 PH |
8550 | |
8551 | case OP_AGGREGATE: | |
8552 | case OP_CHOICES: | |
8553 | case OP_OTHERS: | |
8554 | case OP_DISCRETE_RANGE: | |
8555 | case OP_POSITIONAL: | |
8556 | case OP_NAME: | |
8557 | if (noside == EVAL_NORMAL) | |
8558 | switch (op) | |
8559 | { | |
8560 | case OP_NAME: | |
8561 | error (_("Undefined name, ambiguous name, or renaming used in " | |
e1d5a0d2 | 8562 | "component association: %s."), &exp->elts[pc+2].string); |
52ce6436 PH |
8563 | case OP_AGGREGATE: |
8564 | error (_("Aggregates only allowed on the right of an assignment")); | |
8565 | default: | |
e1d5a0d2 | 8566 | internal_error (__FILE__, __LINE__, _("aggregate apparently mangled")); |
52ce6436 PH |
8567 | } |
8568 | ||
8569 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
8570 | *pos += oplen - 1; | |
8571 | for (tem = 0; tem < nargs; tem += 1) | |
8572 | ada_evaluate_subexp (NULL, exp, pos, noside); | |
8573 | goto nosideret; | |
14f9c5c9 AS |
8574 | } |
8575 | ||
8576 | nosideret: | |
8577 | return value_from_longest (builtin_type_long, (LONGEST) 1); | |
8578 | } | |
14f9c5c9 | 8579 | \f |
d2e4a39e | 8580 | |
4c4b4cd2 | 8581 | /* Fixed point */ |
14f9c5c9 AS |
8582 | |
8583 | /* If TYPE encodes an Ada fixed-point type, return the suffix of the | |
8584 | type name that encodes the 'small and 'delta information. | |
4c4b4cd2 | 8585 | Otherwise, return NULL. */ |
14f9c5c9 | 8586 | |
d2e4a39e | 8587 | static const char * |
ebf56fd3 | 8588 | fixed_type_info (struct type *type) |
14f9c5c9 | 8589 | { |
d2e4a39e | 8590 | const char *name = ada_type_name (type); |
14f9c5c9 AS |
8591 | enum type_code code = (type == NULL) ? TYPE_CODE_UNDEF : TYPE_CODE (type); |
8592 | ||
d2e4a39e AS |
8593 | if ((code == TYPE_CODE_INT || code == TYPE_CODE_RANGE) && name != NULL) |
8594 | { | |
14f9c5c9 AS |
8595 | const char *tail = strstr (name, "___XF_"); |
8596 | if (tail == NULL) | |
4c4b4cd2 | 8597 | return NULL; |
d2e4a39e | 8598 | else |
4c4b4cd2 | 8599 | return tail + 5; |
14f9c5c9 AS |
8600 | } |
8601 | else if (code == TYPE_CODE_RANGE && TYPE_TARGET_TYPE (type) != type) | |
8602 | return fixed_type_info (TYPE_TARGET_TYPE (type)); | |
8603 | else | |
8604 | return NULL; | |
8605 | } | |
8606 | ||
4c4b4cd2 | 8607 | /* Returns non-zero iff TYPE represents an Ada fixed-point type. */ |
14f9c5c9 AS |
8608 | |
8609 | int | |
ebf56fd3 | 8610 | ada_is_fixed_point_type (struct type *type) |
14f9c5c9 AS |
8611 | { |
8612 | return fixed_type_info (type) != NULL; | |
8613 | } | |
8614 | ||
4c4b4cd2 PH |
8615 | /* Return non-zero iff TYPE represents a System.Address type. */ |
8616 | ||
8617 | int | |
8618 | ada_is_system_address_type (struct type *type) | |
8619 | { | |
8620 | return (TYPE_NAME (type) | |
8621 | && strcmp (TYPE_NAME (type), "system__address") == 0); | |
8622 | } | |
8623 | ||
14f9c5c9 AS |
8624 | /* Assuming that TYPE is the representation of an Ada fixed-point |
8625 | type, return its delta, or -1 if the type is malformed and the | |
4c4b4cd2 | 8626 | delta cannot be determined. */ |
14f9c5c9 AS |
8627 | |
8628 | DOUBLEST | |
ebf56fd3 | 8629 | ada_delta (struct type *type) |
14f9c5c9 AS |
8630 | { |
8631 | const char *encoding = fixed_type_info (type); | |
8632 | long num, den; | |
8633 | ||
8634 | if (sscanf (encoding, "_%ld_%ld", &num, &den) < 2) | |
8635 | return -1.0; | |
d2e4a39e | 8636 | else |
14f9c5c9 AS |
8637 | return (DOUBLEST) num / (DOUBLEST) den; |
8638 | } | |
8639 | ||
8640 | /* Assuming that ada_is_fixed_point_type (TYPE), return the scaling | |
4c4b4cd2 | 8641 | factor ('SMALL value) associated with the type. */ |
14f9c5c9 AS |
8642 | |
8643 | static DOUBLEST | |
ebf56fd3 | 8644 | scaling_factor (struct type *type) |
14f9c5c9 AS |
8645 | { |
8646 | const char *encoding = fixed_type_info (type); | |
8647 | unsigned long num0, den0, num1, den1; | |
8648 | int n; | |
d2e4a39e | 8649 | |
14f9c5c9 AS |
8650 | n = sscanf (encoding, "_%lu_%lu_%lu_%lu", &num0, &den0, &num1, &den1); |
8651 | ||
8652 | if (n < 2) | |
8653 | return 1.0; | |
8654 | else if (n == 4) | |
8655 | return (DOUBLEST) num1 / (DOUBLEST) den1; | |
d2e4a39e | 8656 | else |
14f9c5c9 AS |
8657 | return (DOUBLEST) num0 / (DOUBLEST) den0; |
8658 | } | |
8659 | ||
8660 | ||
8661 | /* Assuming that X is the representation of a value of fixed-point | |
4c4b4cd2 | 8662 | type TYPE, return its floating-point equivalent. */ |
14f9c5c9 AS |
8663 | |
8664 | DOUBLEST | |
ebf56fd3 | 8665 | ada_fixed_to_float (struct type *type, LONGEST x) |
14f9c5c9 | 8666 | { |
d2e4a39e | 8667 | return (DOUBLEST) x *scaling_factor (type); |
14f9c5c9 AS |
8668 | } |
8669 | ||
4c4b4cd2 PH |
8670 | /* The representation of a fixed-point value of type TYPE |
8671 | corresponding to the value X. */ | |
14f9c5c9 AS |
8672 | |
8673 | LONGEST | |
ebf56fd3 | 8674 | ada_float_to_fixed (struct type *type, DOUBLEST x) |
14f9c5c9 AS |
8675 | { |
8676 | return (LONGEST) (x / scaling_factor (type) + 0.5); | |
8677 | } | |
8678 | ||
8679 | ||
4c4b4cd2 | 8680 | /* VAX floating formats */ |
14f9c5c9 AS |
8681 | |
8682 | /* Non-zero iff TYPE represents one of the special VAX floating-point | |
4c4b4cd2 PH |
8683 | types. */ |
8684 | ||
14f9c5c9 | 8685 | int |
d2e4a39e | 8686 | ada_is_vax_floating_type (struct type *type) |
14f9c5c9 | 8687 | { |
d2e4a39e | 8688 | int name_len = |
14f9c5c9 | 8689 | (ada_type_name (type) == NULL) ? 0 : strlen (ada_type_name (type)); |
d2e4a39e | 8690 | return |
14f9c5c9 | 8691 | name_len > 6 |
d2e4a39e | 8692 | && (TYPE_CODE (type) == TYPE_CODE_INT |
4c4b4cd2 PH |
8693 | || TYPE_CODE (type) == TYPE_CODE_RANGE) |
8694 | && strncmp (ada_type_name (type) + name_len - 6, "___XF", 5) == 0; | |
14f9c5c9 AS |
8695 | } |
8696 | ||
8697 | /* The type of special VAX floating-point type this is, assuming | |
4c4b4cd2 PH |
8698 | ada_is_vax_floating_point. */ |
8699 | ||
14f9c5c9 | 8700 | int |
d2e4a39e | 8701 | ada_vax_float_type_suffix (struct type *type) |
14f9c5c9 | 8702 | { |
d2e4a39e | 8703 | return ada_type_name (type)[strlen (ada_type_name (type)) - 1]; |
14f9c5c9 AS |
8704 | } |
8705 | ||
4c4b4cd2 | 8706 | /* A value representing the special debugging function that outputs |
14f9c5c9 | 8707 | VAX floating-point values of the type represented by TYPE. Assumes |
4c4b4cd2 PH |
8708 | ada_is_vax_floating_type (TYPE). */ |
8709 | ||
d2e4a39e AS |
8710 | struct value * |
8711 | ada_vax_float_print_function (struct type *type) | |
8712 | { | |
8713 | switch (ada_vax_float_type_suffix (type)) | |
8714 | { | |
8715 | case 'F': | |
8716 | return get_var_value ("DEBUG_STRING_F", 0); | |
8717 | case 'D': | |
8718 | return get_var_value ("DEBUG_STRING_D", 0); | |
8719 | case 'G': | |
8720 | return get_var_value ("DEBUG_STRING_G", 0); | |
8721 | default: | |
323e0a4a | 8722 | error (_("invalid VAX floating-point type")); |
d2e4a39e | 8723 | } |
14f9c5c9 | 8724 | } |
14f9c5c9 | 8725 | \f |
d2e4a39e | 8726 | |
4c4b4cd2 | 8727 | /* Range types */ |
14f9c5c9 AS |
8728 | |
8729 | /* Scan STR beginning at position K for a discriminant name, and | |
8730 | return the value of that discriminant field of DVAL in *PX. If | |
8731 | PNEW_K is not null, put the position of the character beyond the | |
8732 | name scanned in *PNEW_K. Return 1 if successful; return 0 and do | |
4c4b4cd2 | 8733 | not alter *PX and *PNEW_K if unsuccessful. */ |
14f9c5c9 AS |
8734 | |
8735 | static int | |
07d8f827 | 8736 | scan_discrim_bound (char *str, int k, struct value *dval, LONGEST * px, |
76a01679 | 8737 | int *pnew_k) |
14f9c5c9 AS |
8738 | { |
8739 | static char *bound_buffer = NULL; | |
8740 | static size_t bound_buffer_len = 0; | |
8741 | char *bound; | |
8742 | char *pend; | |
d2e4a39e | 8743 | struct value *bound_val; |
14f9c5c9 AS |
8744 | |
8745 | if (dval == NULL || str == NULL || str[k] == '\0') | |
8746 | return 0; | |
8747 | ||
d2e4a39e | 8748 | pend = strstr (str + k, "__"); |
14f9c5c9 AS |
8749 | if (pend == NULL) |
8750 | { | |
d2e4a39e | 8751 | bound = str + k; |
14f9c5c9 AS |
8752 | k += strlen (bound); |
8753 | } | |
d2e4a39e | 8754 | else |
14f9c5c9 | 8755 | { |
d2e4a39e | 8756 | GROW_VECT (bound_buffer, bound_buffer_len, pend - (str + k) + 1); |
14f9c5c9 | 8757 | bound = bound_buffer; |
d2e4a39e AS |
8758 | strncpy (bound_buffer, str + k, pend - (str + k)); |
8759 | bound[pend - (str + k)] = '\0'; | |
8760 | k = pend - str; | |
14f9c5c9 | 8761 | } |
d2e4a39e | 8762 | |
df407dfe | 8763 | bound_val = ada_search_struct_field (bound, dval, 0, value_type (dval)); |
14f9c5c9 AS |
8764 | if (bound_val == NULL) |
8765 | return 0; | |
8766 | ||
8767 | *px = value_as_long (bound_val); | |
8768 | if (pnew_k != NULL) | |
8769 | *pnew_k = k; | |
8770 | return 1; | |
8771 | } | |
8772 | ||
8773 | /* Value of variable named NAME in the current environment. If | |
8774 | no such variable found, then if ERR_MSG is null, returns 0, and | |
4c4b4cd2 PH |
8775 | otherwise causes an error with message ERR_MSG. */ |
8776 | ||
d2e4a39e AS |
8777 | static struct value * |
8778 | get_var_value (char *name, char *err_msg) | |
14f9c5c9 | 8779 | { |
4c4b4cd2 | 8780 | struct ada_symbol_info *syms; |
14f9c5c9 AS |
8781 | int nsyms; |
8782 | ||
4c4b4cd2 PH |
8783 | nsyms = ada_lookup_symbol_list (name, get_selected_block (0), VAR_DOMAIN, |
8784 | &syms); | |
14f9c5c9 AS |
8785 | |
8786 | if (nsyms != 1) | |
8787 | { | |
8788 | if (err_msg == NULL) | |
4c4b4cd2 | 8789 | return 0; |
14f9c5c9 | 8790 | else |
8a3fe4f8 | 8791 | error (("%s"), err_msg); |
14f9c5c9 AS |
8792 | } |
8793 | ||
4c4b4cd2 | 8794 | return value_of_variable (syms[0].sym, syms[0].block); |
14f9c5c9 | 8795 | } |
d2e4a39e | 8796 | |
14f9c5c9 | 8797 | /* Value of integer variable named NAME in the current environment. If |
4c4b4cd2 PH |
8798 | no such variable found, returns 0, and sets *FLAG to 0. If |
8799 | successful, sets *FLAG to 1. */ | |
8800 | ||
14f9c5c9 | 8801 | LONGEST |
4c4b4cd2 | 8802 | get_int_var_value (char *name, int *flag) |
14f9c5c9 | 8803 | { |
4c4b4cd2 | 8804 | struct value *var_val = get_var_value (name, 0); |
d2e4a39e | 8805 | |
14f9c5c9 AS |
8806 | if (var_val == 0) |
8807 | { | |
8808 | if (flag != NULL) | |
4c4b4cd2 | 8809 | *flag = 0; |
14f9c5c9 AS |
8810 | return 0; |
8811 | } | |
8812 | else | |
8813 | { | |
8814 | if (flag != NULL) | |
4c4b4cd2 | 8815 | *flag = 1; |
14f9c5c9 AS |
8816 | return value_as_long (var_val); |
8817 | } | |
8818 | } | |
d2e4a39e | 8819 | |
14f9c5c9 AS |
8820 | |
8821 | /* Return a range type whose base type is that of the range type named | |
8822 | NAME in the current environment, and whose bounds are calculated | |
4c4b4cd2 | 8823 | from NAME according to the GNAT range encoding conventions. |
14f9c5c9 AS |
8824 | Extract discriminant values, if needed, from DVAL. If a new type |
8825 | must be created, allocate in OBJFILE's space. The bounds | |
8826 | information, in general, is encoded in NAME, the base type given in | |
4c4b4cd2 | 8827 | the named range type. */ |
14f9c5c9 | 8828 | |
d2e4a39e | 8829 | static struct type * |
ebf56fd3 | 8830 | to_fixed_range_type (char *name, struct value *dval, struct objfile *objfile) |
14f9c5c9 AS |
8831 | { |
8832 | struct type *raw_type = ada_find_any_type (name); | |
8833 | struct type *base_type; | |
d2e4a39e | 8834 | char *subtype_info; |
14f9c5c9 AS |
8835 | |
8836 | if (raw_type == NULL) | |
8837 | base_type = builtin_type_int; | |
8838 | else if (TYPE_CODE (raw_type) == TYPE_CODE_RANGE) | |
8839 | base_type = TYPE_TARGET_TYPE (raw_type); | |
8840 | else | |
8841 | base_type = raw_type; | |
8842 | ||
8843 | subtype_info = strstr (name, "___XD"); | |
8844 | if (subtype_info == NULL) | |
8845 | return raw_type; | |
8846 | else | |
8847 | { | |
8848 | static char *name_buf = NULL; | |
8849 | static size_t name_len = 0; | |
8850 | int prefix_len = subtype_info - name; | |
8851 | LONGEST L, U; | |
8852 | struct type *type; | |
8853 | char *bounds_str; | |
8854 | int n; | |
8855 | ||
8856 | GROW_VECT (name_buf, name_len, prefix_len + 5); | |
8857 | strncpy (name_buf, name, prefix_len); | |
8858 | name_buf[prefix_len] = '\0'; | |
8859 | ||
8860 | subtype_info += 5; | |
8861 | bounds_str = strchr (subtype_info, '_'); | |
8862 | n = 1; | |
8863 | ||
d2e4a39e | 8864 | if (*subtype_info == 'L') |
4c4b4cd2 PH |
8865 | { |
8866 | if (!ada_scan_number (bounds_str, n, &L, &n) | |
8867 | && !scan_discrim_bound (bounds_str, n, dval, &L, &n)) | |
8868 | return raw_type; | |
8869 | if (bounds_str[n] == '_') | |
8870 | n += 2; | |
8871 | else if (bounds_str[n] == '.') /* FIXME? SGI Workshop kludge. */ | |
8872 | n += 1; | |
8873 | subtype_info += 1; | |
8874 | } | |
d2e4a39e | 8875 | else |
4c4b4cd2 PH |
8876 | { |
8877 | int ok; | |
8878 | strcpy (name_buf + prefix_len, "___L"); | |
8879 | L = get_int_var_value (name_buf, &ok); | |
8880 | if (!ok) | |
8881 | { | |
323e0a4a | 8882 | lim_warning (_("Unknown lower bound, using 1.")); |
4c4b4cd2 PH |
8883 | L = 1; |
8884 | } | |
8885 | } | |
14f9c5c9 | 8886 | |
d2e4a39e | 8887 | if (*subtype_info == 'U') |
4c4b4cd2 PH |
8888 | { |
8889 | if (!ada_scan_number (bounds_str, n, &U, &n) | |
8890 | && !scan_discrim_bound (bounds_str, n, dval, &U, &n)) | |
8891 | return raw_type; | |
8892 | } | |
d2e4a39e | 8893 | else |
4c4b4cd2 PH |
8894 | { |
8895 | int ok; | |
8896 | strcpy (name_buf + prefix_len, "___U"); | |
8897 | U = get_int_var_value (name_buf, &ok); | |
8898 | if (!ok) | |
8899 | { | |
323e0a4a | 8900 | lim_warning (_("Unknown upper bound, using %ld."), (long) L); |
4c4b4cd2 PH |
8901 | U = L; |
8902 | } | |
8903 | } | |
14f9c5c9 | 8904 | |
d2e4a39e | 8905 | if (objfile == NULL) |
4c4b4cd2 | 8906 | objfile = TYPE_OBJFILE (base_type); |
14f9c5c9 | 8907 | type = create_range_type (alloc_type (objfile), base_type, L, U); |
d2e4a39e | 8908 | TYPE_NAME (type) = name; |
14f9c5c9 AS |
8909 | return type; |
8910 | } | |
8911 | } | |
8912 | ||
4c4b4cd2 PH |
8913 | /* True iff NAME is the name of a range type. */ |
8914 | ||
14f9c5c9 | 8915 | int |
d2e4a39e | 8916 | ada_is_range_type_name (const char *name) |
14f9c5c9 AS |
8917 | { |
8918 | return (name != NULL && strstr (name, "___XD")); | |
d2e4a39e | 8919 | } |
14f9c5c9 | 8920 | \f |
d2e4a39e | 8921 | |
4c4b4cd2 PH |
8922 | /* Modular types */ |
8923 | ||
8924 | /* True iff TYPE is an Ada modular type. */ | |
14f9c5c9 | 8925 | |
14f9c5c9 | 8926 | int |
d2e4a39e | 8927 | ada_is_modular_type (struct type *type) |
14f9c5c9 | 8928 | { |
4c4b4cd2 | 8929 | struct type *subranged_type = base_type (type); |
14f9c5c9 AS |
8930 | |
8931 | return (subranged_type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE | |
4c4b4cd2 PH |
8932 | && TYPE_CODE (subranged_type) != TYPE_CODE_ENUM |
8933 | && TYPE_UNSIGNED (subranged_type)); | |
14f9c5c9 AS |
8934 | } |
8935 | ||
4c4b4cd2 PH |
8936 | /* Assuming ada_is_modular_type (TYPE), the modulus of TYPE. */ |
8937 | ||
61ee279c | 8938 | ULONGEST |
d2e4a39e | 8939 | ada_modulus (struct type * type) |
14f9c5c9 | 8940 | { |
61ee279c | 8941 | return (ULONGEST) TYPE_HIGH_BOUND (type) + 1; |
14f9c5c9 | 8942 | } |
d2e4a39e | 8943 | \f |
f7f9143b JB |
8944 | |
8945 | /* Ada exception catchpoint support: | |
8946 | --------------------------------- | |
8947 | ||
8948 | We support 3 kinds of exception catchpoints: | |
8949 | . catchpoints on Ada exceptions | |
8950 | . catchpoints on unhandled Ada exceptions | |
8951 | . catchpoints on failed assertions | |
8952 | ||
8953 | Exceptions raised during failed assertions, or unhandled exceptions | |
8954 | could perfectly be caught with the general catchpoint on Ada exceptions. | |
8955 | However, we can easily differentiate these two special cases, and having | |
8956 | the option to distinguish these two cases from the rest can be useful | |
8957 | to zero-in on certain situations. | |
8958 | ||
8959 | Exception catchpoints are a specialized form of breakpoint, | |
8960 | since they rely on inserting breakpoints inside known routines | |
8961 | of the GNAT runtime. The implementation therefore uses a standard | |
8962 | breakpoint structure of the BP_BREAKPOINT type, but with its own set | |
8963 | of breakpoint_ops. | |
8964 | ||
0259addd JB |
8965 | Support in the runtime for exception catchpoints have been changed |
8966 | a few times already, and these changes affect the implementation | |
8967 | of these catchpoints. In order to be able to support several | |
8968 | variants of the runtime, we use a sniffer that will determine | |
8969 | the runtime variant used by the program being debugged. | |
8970 | ||
f7f9143b JB |
8971 | At this time, we do not support the use of conditions on Ada exception |
8972 | catchpoints. The COND and COND_STRING fields are therefore set | |
8973 | to NULL (most of the time, see below). | |
8974 | ||
8975 | Conditions where EXP_STRING, COND, and COND_STRING are used: | |
8976 | ||
8977 | When a user specifies the name of a specific exception in the case | |
8978 | of catchpoints on Ada exceptions, we store the name of that exception | |
8979 | in the EXP_STRING. We then translate this request into an actual | |
8980 | condition stored in COND_STRING, and then parse it into an expression | |
8981 | stored in COND. */ | |
8982 | ||
8983 | /* The different types of catchpoints that we introduced for catching | |
8984 | Ada exceptions. */ | |
8985 | ||
8986 | enum exception_catchpoint_kind | |
8987 | { | |
8988 | ex_catch_exception, | |
8989 | ex_catch_exception_unhandled, | |
8990 | ex_catch_assert | |
8991 | }; | |
8992 | ||
0259addd JB |
8993 | typedef CORE_ADDR (ada_unhandled_exception_name_addr_ftype) (void); |
8994 | ||
8995 | /* A structure that describes how to support exception catchpoints | |
8996 | for a given executable. */ | |
8997 | ||
8998 | struct exception_support_info | |
8999 | { | |
9000 | /* The name of the symbol to break on in order to insert | |
9001 | a catchpoint on exceptions. */ | |
9002 | const char *catch_exception_sym; | |
9003 | ||
9004 | /* The name of the symbol to break on in order to insert | |
9005 | a catchpoint on unhandled exceptions. */ | |
9006 | const char *catch_exception_unhandled_sym; | |
9007 | ||
9008 | /* The name of the symbol to break on in order to insert | |
9009 | a catchpoint on failed assertions. */ | |
9010 | const char *catch_assert_sym; | |
9011 | ||
9012 | /* Assuming that the inferior just triggered an unhandled exception | |
9013 | catchpoint, this function is responsible for returning the address | |
9014 | in inferior memory where the name of that exception is stored. | |
9015 | Return zero if the address could not be computed. */ | |
9016 | ada_unhandled_exception_name_addr_ftype *unhandled_exception_name_addr; | |
9017 | }; | |
9018 | ||
9019 | static CORE_ADDR ada_unhandled_exception_name_addr (void); | |
9020 | static CORE_ADDR ada_unhandled_exception_name_addr_from_raise (void); | |
9021 | ||
9022 | /* The following exception support info structure describes how to | |
9023 | implement exception catchpoints with the latest version of the | |
9024 | Ada runtime (as of 2007-03-06). */ | |
9025 | ||
9026 | static const struct exception_support_info default_exception_support_info = | |
9027 | { | |
9028 | "__gnat_debug_raise_exception", /* catch_exception_sym */ | |
9029 | "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */ | |
9030 | "__gnat_debug_raise_assert_failure", /* catch_assert_sym */ | |
9031 | ada_unhandled_exception_name_addr | |
9032 | }; | |
9033 | ||
9034 | /* The following exception support info structure describes how to | |
9035 | implement exception catchpoints with a slightly older version | |
9036 | of the Ada runtime. */ | |
9037 | ||
9038 | static const struct exception_support_info exception_support_info_fallback = | |
9039 | { | |
9040 | "__gnat_raise_nodefer_with_msg", /* catch_exception_sym */ | |
9041 | "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */ | |
9042 | "system__assertions__raise_assert_failure", /* catch_assert_sym */ | |
9043 | ada_unhandled_exception_name_addr_from_raise | |
9044 | }; | |
9045 | ||
9046 | /* For each executable, we sniff which exception info structure to use | |
9047 | and cache it in the following global variable. */ | |
9048 | ||
9049 | static const struct exception_support_info *exception_info = NULL; | |
9050 | ||
9051 | /* Inspect the Ada runtime and determine which exception info structure | |
9052 | should be used to provide support for exception catchpoints. | |
9053 | ||
9054 | This function will always set exception_info, or raise an error. */ | |
9055 | ||
9056 | static void | |
9057 | ada_exception_support_info_sniffer (void) | |
9058 | { | |
9059 | struct symbol *sym; | |
9060 | ||
9061 | /* If the exception info is already known, then no need to recompute it. */ | |
9062 | if (exception_info != NULL) | |
9063 | return; | |
9064 | ||
9065 | /* Check the latest (default) exception support info. */ | |
9066 | sym = standard_lookup (default_exception_support_info.catch_exception_sym, | |
9067 | NULL, VAR_DOMAIN); | |
9068 | if (sym != NULL) | |
9069 | { | |
9070 | exception_info = &default_exception_support_info; | |
9071 | return; | |
9072 | } | |
9073 | ||
9074 | /* Try our fallback exception suport info. */ | |
9075 | sym = standard_lookup (exception_support_info_fallback.catch_exception_sym, | |
9076 | NULL, VAR_DOMAIN); | |
9077 | if (sym != NULL) | |
9078 | { | |
9079 | exception_info = &exception_support_info_fallback; | |
9080 | return; | |
9081 | } | |
9082 | ||
9083 | /* Sometimes, it is normal for us to not be able to find the routine | |
9084 | we are looking for. This happens when the program is linked with | |
9085 | the shared version of the GNAT runtime, and the program has not been | |
9086 | started yet. Inform the user of these two possible causes if | |
9087 | applicable. */ | |
9088 | ||
9089 | if (ada_update_initial_language (language_unknown, NULL) != language_ada) | |
9090 | error (_("Unable to insert catchpoint. Is this an Ada main program?")); | |
9091 | ||
9092 | /* If the symbol does not exist, then check that the program is | |
9093 | already started, to make sure that shared libraries have been | |
9094 | loaded. If it is not started, this may mean that the symbol is | |
9095 | in a shared library. */ | |
9096 | ||
9097 | if (ptid_get_pid (inferior_ptid) == 0) | |
9098 | error (_("Unable to insert catchpoint. Try to start the program first.")); | |
9099 | ||
9100 | /* At this point, we know that we are debugging an Ada program and | |
9101 | that the inferior has been started, but we still are not able to | |
9102 | find the run-time symbols. That can mean that we are in | |
9103 | configurable run time mode, or that a-except as been optimized | |
9104 | out by the linker... In any case, at this point it is not worth | |
9105 | supporting this feature. */ | |
9106 | ||
9107 | error (_("Cannot insert catchpoints in this configuration.")); | |
9108 | } | |
9109 | ||
9110 | /* An observer of "executable_changed" events. | |
9111 | Its role is to clear certain cached values that need to be recomputed | |
9112 | each time a new executable is loaded by GDB. */ | |
9113 | ||
9114 | static void | |
9115 | ada_executable_changed_observer (void *unused) | |
9116 | { | |
9117 | /* If the executable changed, then it is possible that the Ada runtime | |
9118 | is different. So we need to invalidate the exception support info | |
9119 | cache. */ | |
9120 | exception_info = NULL; | |
9121 | } | |
9122 | ||
f7f9143b JB |
9123 | /* Return the name of the function at PC, NULL if could not find it. |
9124 | This function only checks the debugging information, not the symbol | |
9125 | table. */ | |
9126 | ||
9127 | static char * | |
9128 | function_name_from_pc (CORE_ADDR pc) | |
9129 | { | |
9130 | char *func_name; | |
9131 | ||
9132 | if (!find_pc_partial_function (pc, &func_name, NULL, NULL)) | |
9133 | return NULL; | |
9134 | ||
9135 | return func_name; | |
9136 | } | |
9137 | ||
9138 | /* True iff FRAME is very likely to be that of a function that is | |
9139 | part of the runtime system. This is all very heuristic, but is | |
9140 | intended to be used as advice as to what frames are uninteresting | |
9141 | to most users. */ | |
9142 | ||
9143 | static int | |
9144 | is_known_support_routine (struct frame_info *frame) | |
9145 | { | |
4ed6b5be | 9146 | struct symtab_and_line sal; |
f7f9143b JB |
9147 | char *func_name; |
9148 | int i; | |
f7f9143b | 9149 | |
4ed6b5be JB |
9150 | /* If this code does not have any debugging information (no symtab), |
9151 | This cannot be any user code. */ | |
f7f9143b | 9152 | |
4ed6b5be | 9153 | find_frame_sal (frame, &sal); |
f7f9143b JB |
9154 | if (sal.symtab == NULL) |
9155 | return 1; | |
9156 | ||
4ed6b5be JB |
9157 | /* If there is a symtab, but the associated source file cannot be |
9158 | located, then assume this is not user code: Selecting a frame | |
9159 | for which we cannot display the code would not be very helpful | |
9160 | for the user. This should also take care of case such as VxWorks | |
9161 | where the kernel has some debugging info provided for a few units. */ | |
f7f9143b | 9162 | |
9bbc9174 | 9163 | if (symtab_to_fullname (sal.symtab) == NULL) |
f7f9143b JB |
9164 | return 1; |
9165 | ||
4ed6b5be JB |
9166 | /* Check the unit filename againt the Ada runtime file naming. |
9167 | We also check the name of the objfile against the name of some | |
9168 | known system libraries that sometimes come with debugging info | |
9169 | too. */ | |
9170 | ||
f7f9143b JB |
9171 | for (i = 0; known_runtime_file_name_patterns[i] != NULL; i += 1) |
9172 | { | |
9173 | re_comp (known_runtime_file_name_patterns[i]); | |
9174 | if (re_exec (sal.symtab->filename)) | |
9175 | return 1; | |
4ed6b5be JB |
9176 | if (sal.symtab->objfile != NULL |
9177 | && re_exec (sal.symtab->objfile->name)) | |
9178 | return 1; | |
f7f9143b JB |
9179 | } |
9180 | ||
4ed6b5be | 9181 | /* Check whether the function is a GNAT-generated entity. */ |
f7f9143b | 9182 | |
4ed6b5be | 9183 | func_name = function_name_from_pc (get_frame_address_in_block (frame)); |
f7f9143b JB |
9184 | if (func_name == NULL) |
9185 | return 1; | |
9186 | ||
9187 | for (i = 0; known_auxiliary_function_name_patterns[i] != NULL; i += 1) | |
9188 | { | |
9189 | re_comp (known_auxiliary_function_name_patterns[i]); | |
9190 | if (re_exec (func_name)) | |
9191 | return 1; | |
9192 | } | |
9193 | ||
9194 | return 0; | |
9195 | } | |
9196 | ||
9197 | /* Find the first frame that contains debugging information and that is not | |
9198 | part of the Ada run-time, starting from FI and moving upward. */ | |
9199 | ||
9200 | static void | |
9201 | ada_find_printable_frame (struct frame_info *fi) | |
9202 | { | |
9203 | for (; fi != NULL; fi = get_prev_frame (fi)) | |
9204 | { | |
9205 | if (!is_known_support_routine (fi)) | |
9206 | { | |
9207 | select_frame (fi); | |
9208 | break; | |
9209 | } | |
9210 | } | |
9211 | ||
9212 | } | |
9213 | ||
9214 | /* Assuming that the inferior just triggered an unhandled exception | |
9215 | catchpoint, return the address in inferior memory where the name | |
9216 | of the exception is stored. | |
9217 | ||
9218 | Return zero if the address could not be computed. */ | |
9219 | ||
9220 | static CORE_ADDR | |
9221 | ada_unhandled_exception_name_addr (void) | |
0259addd JB |
9222 | { |
9223 | return parse_and_eval_address ("e.full_name"); | |
9224 | } | |
9225 | ||
9226 | /* Same as ada_unhandled_exception_name_addr, except that this function | |
9227 | should be used when the inferior uses an older version of the runtime, | |
9228 | where the exception name needs to be extracted from a specific frame | |
9229 | several frames up in the callstack. */ | |
9230 | ||
9231 | static CORE_ADDR | |
9232 | ada_unhandled_exception_name_addr_from_raise (void) | |
f7f9143b JB |
9233 | { |
9234 | int frame_level; | |
9235 | struct frame_info *fi; | |
9236 | ||
9237 | /* To determine the name of this exception, we need to select | |
9238 | the frame corresponding to RAISE_SYM_NAME. This frame is | |
9239 | at least 3 levels up, so we simply skip the first 3 frames | |
9240 | without checking the name of their associated function. */ | |
9241 | fi = get_current_frame (); | |
9242 | for (frame_level = 0; frame_level < 3; frame_level += 1) | |
9243 | if (fi != NULL) | |
9244 | fi = get_prev_frame (fi); | |
9245 | ||
9246 | while (fi != NULL) | |
9247 | { | |
9248 | const char *func_name = | |
9249 | function_name_from_pc (get_frame_address_in_block (fi)); | |
9250 | if (func_name != NULL | |
0259addd | 9251 | && strcmp (func_name, exception_info->catch_exception_sym) == 0) |
f7f9143b JB |
9252 | break; /* We found the frame we were looking for... */ |
9253 | fi = get_prev_frame (fi); | |
9254 | } | |
9255 | ||
9256 | if (fi == NULL) | |
9257 | return 0; | |
9258 | ||
9259 | select_frame (fi); | |
9260 | return parse_and_eval_address ("id.full_name"); | |
9261 | } | |
9262 | ||
9263 | /* Assuming the inferior just triggered an Ada exception catchpoint | |
9264 | (of any type), return the address in inferior memory where the name | |
9265 | of the exception is stored, if applicable. | |
9266 | ||
9267 | Return zero if the address could not be computed, or if not relevant. */ | |
9268 | ||
9269 | static CORE_ADDR | |
9270 | ada_exception_name_addr_1 (enum exception_catchpoint_kind ex, | |
9271 | struct breakpoint *b) | |
9272 | { | |
9273 | switch (ex) | |
9274 | { | |
9275 | case ex_catch_exception: | |
9276 | return (parse_and_eval_address ("e.full_name")); | |
9277 | break; | |
9278 | ||
9279 | case ex_catch_exception_unhandled: | |
0259addd | 9280 | return exception_info->unhandled_exception_name_addr (); |
f7f9143b JB |
9281 | break; |
9282 | ||
9283 | case ex_catch_assert: | |
9284 | return 0; /* Exception name is not relevant in this case. */ | |
9285 | break; | |
9286 | ||
9287 | default: | |
9288 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
9289 | break; | |
9290 | } | |
9291 | ||
9292 | return 0; /* Should never be reached. */ | |
9293 | } | |
9294 | ||
9295 | /* Same as ada_exception_name_addr_1, except that it intercepts and contains | |
9296 | any error that ada_exception_name_addr_1 might cause to be thrown. | |
9297 | When an error is intercepted, a warning with the error message is printed, | |
9298 | and zero is returned. */ | |
9299 | ||
9300 | static CORE_ADDR | |
9301 | ada_exception_name_addr (enum exception_catchpoint_kind ex, | |
9302 | struct breakpoint *b) | |
9303 | { | |
9304 | struct gdb_exception e; | |
9305 | CORE_ADDR result = 0; | |
9306 | ||
9307 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
9308 | { | |
9309 | result = ada_exception_name_addr_1 (ex, b); | |
9310 | } | |
9311 | ||
9312 | if (e.reason < 0) | |
9313 | { | |
9314 | warning (_("failed to get exception name: %s"), e.message); | |
9315 | return 0; | |
9316 | } | |
9317 | ||
9318 | return result; | |
9319 | } | |
9320 | ||
9321 | /* Implement the PRINT_IT method in the breakpoint_ops structure | |
9322 | for all exception catchpoint kinds. */ | |
9323 | ||
9324 | static enum print_stop_action | |
9325 | print_it_exception (enum exception_catchpoint_kind ex, struct breakpoint *b) | |
9326 | { | |
9327 | const CORE_ADDR addr = ada_exception_name_addr (ex, b); | |
9328 | char exception_name[256]; | |
9329 | ||
9330 | if (addr != 0) | |
9331 | { | |
9332 | read_memory (addr, exception_name, sizeof (exception_name) - 1); | |
9333 | exception_name [sizeof (exception_name) - 1] = '\0'; | |
9334 | } | |
9335 | ||
9336 | ada_find_printable_frame (get_current_frame ()); | |
9337 | ||
9338 | annotate_catchpoint (b->number); | |
9339 | switch (ex) | |
9340 | { | |
9341 | case ex_catch_exception: | |
9342 | if (addr != 0) | |
9343 | printf_filtered (_("\nCatchpoint %d, %s at "), | |
9344 | b->number, exception_name); | |
9345 | else | |
9346 | printf_filtered (_("\nCatchpoint %d, exception at "), b->number); | |
9347 | break; | |
9348 | case ex_catch_exception_unhandled: | |
9349 | if (addr != 0) | |
9350 | printf_filtered (_("\nCatchpoint %d, unhandled %s at "), | |
9351 | b->number, exception_name); | |
9352 | else | |
9353 | printf_filtered (_("\nCatchpoint %d, unhandled exception at "), | |
9354 | b->number); | |
9355 | break; | |
9356 | case ex_catch_assert: | |
9357 | printf_filtered (_("\nCatchpoint %d, failed assertion at "), | |
9358 | b->number); | |
9359 | break; | |
9360 | } | |
9361 | ||
9362 | return PRINT_SRC_AND_LOC; | |
9363 | } | |
9364 | ||
9365 | /* Implement the PRINT_ONE method in the breakpoint_ops structure | |
9366 | for all exception catchpoint kinds. */ | |
9367 | ||
9368 | static void | |
9369 | print_one_exception (enum exception_catchpoint_kind ex, | |
9370 | struct breakpoint *b, CORE_ADDR *last_addr) | |
9371 | { | |
9372 | if (addressprint) | |
9373 | { | |
9374 | annotate_field (4); | |
9375 | ui_out_field_core_addr (uiout, "addr", b->loc->address); | |
9376 | } | |
9377 | ||
9378 | annotate_field (5); | |
9379 | *last_addr = b->loc->address; | |
9380 | switch (ex) | |
9381 | { | |
9382 | case ex_catch_exception: | |
9383 | if (b->exp_string != NULL) | |
9384 | { | |
9385 | char *msg = xstrprintf (_("`%s' Ada exception"), b->exp_string); | |
9386 | ||
9387 | ui_out_field_string (uiout, "what", msg); | |
9388 | xfree (msg); | |
9389 | } | |
9390 | else | |
9391 | ui_out_field_string (uiout, "what", "all Ada exceptions"); | |
9392 | ||
9393 | break; | |
9394 | ||
9395 | case ex_catch_exception_unhandled: | |
9396 | ui_out_field_string (uiout, "what", "unhandled Ada exceptions"); | |
9397 | break; | |
9398 | ||
9399 | case ex_catch_assert: | |
9400 | ui_out_field_string (uiout, "what", "failed Ada assertions"); | |
9401 | break; | |
9402 | ||
9403 | default: | |
9404 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
9405 | break; | |
9406 | } | |
9407 | } | |
9408 | ||
9409 | /* Implement the PRINT_MENTION method in the breakpoint_ops structure | |
9410 | for all exception catchpoint kinds. */ | |
9411 | ||
9412 | static void | |
9413 | print_mention_exception (enum exception_catchpoint_kind ex, | |
9414 | struct breakpoint *b) | |
9415 | { | |
9416 | switch (ex) | |
9417 | { | |
9418 | case ex_catch_exception: | |
9419 | if (b->exp_string != NULL) | |
9420 | printf_filtered (_("Catchpoint %d: `%s' Ada exception"), | |
9421 | b->number, b->exp_string); | |
9422 | else | |
9423 | printf_filtered (_("Catchpoint %d: all Ada exceptions"), b->number); | |
9424 | ||
9425 | break; | |
9426 | ||
9427 | case ex_catch_exception_unhandled: | |
9428 | printf_filtered (_("Catchpoint %d: unhandled Ada exceptions"), | |
9429 | b->number); | |
9430 | break; | |
9431 | ||
9432 | case ex_catch_assert: | |
9433 | printf_filtered (_("Catchpoint %d: failed Ada assertions"), b->number); | |
9434 | break; | |
9435 | ||
9436 | default: | |
9437 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
9438 | break; | |
9439 | } | |
9440 | } | |
9441 | ||
9442 | /* Virtual table for "catch exception" breakpoints. */ | |
9443 | ||
9444 | static enum print_stop_action | |
9445 | print_it_catch_exception (struct breakpoint *b) | |
9446 | { | |
9447 | return print_it_exception (ex_catch_exception, b); | |
9448 | } | |
9449 | ||
9450 | static void | |
9451 | print_one_catch_exception (struct breakpoint *b, CORE_ADDR *last_addr) | |
9452 | { | |
9453 | print_one_exception (ex_catch_exception, b, last_addr); | |
9454 | } | |
9455 | ||
9456 | static void | |
9457 | print_mention_catch_exception (struct breakpoint *b) | |
9458 | { | |
9459 | print_mention_exception (ex_catch_exception, b); | |
9460 | } | |
9461 | ||
9462 | static struct breakpoint_ops catch_exception_breakpoint_ops = | |
9463 | { | |
9464 | print_it_catch_exception, | |
9465 | print_one_catch_exception, | |
9466 | print_mention_catch_exception | |
9467 | }; | |
9468 | ||
9469 | /* Virtual table for "catch exception unhandled" breakpoints. */ | |
9470 | ||
9471 | static enum print_stop_action | |
9472 | print_it_catch_exception_unhandled (struct breakpoint *b) | |
9473 | { | |
9474 | return print_it_exception (ex_catch_exception_unhandled, b); | |
9475 | } | |
9476 | ||
9477 | static void | |
9478 | print_one_catch_exception_unhandled (struct breakpoint *b, CORE_ADDR *last_addr) | |
9479 | { | |
9480 | print_one_exception (ex_catch_exception_unhandled, b, last_addr); | |
9481 | } | |
9482 | ||
9483 | static void | |
9484 | print_mention_catch_exception_unhandled (struct breakpoint *b) | |
9485 | { | |
9486 | print_mention_exception (ex_catch_exception_unhandled, b); | |
9487 | } | |
9488 | ||
9489 | static struct breakpoint_ops catch_exception_unhandled_breakpoint_ops = { | |
9490 | print_it_catch_exception_unhandled, | |
9491 | print_one_catch_exception_unhandled, | |
9492 | print_mention_catch_exception_unhandled | |
9493 | }; | |
9494 | ||
9495 | /* Virtual table for "catch assert" breakpoints. */ | |
9496 | ||
9497 | static enum print_stop_action | |
9498 | print_it_catch_assert (struct breakpoint *b) | |
9499 | { | |
9500 | return print_it_exception (ex_catch_assert, b); | |
9501 | } | |
9502 | ||
9503 | static void | |
9504 | print_one_catch_assert (struct breakpoint *b, CORE_ADDR *last_addr) | |
9505 | { | |
9506 | print_one_exception (ex_catch_assert, b, last_addr); | |
9507 | } | |
9508 | ||
9509 | static void | |
9510 | print_mention_catch_assert (struct breakpoint *b) | |
9511 | { | |
9512 | print_mention_exception (ex_catch_assert, b); | |
9513 | } | |
9514 | ||
9515 | static struct breakpoint_ops catch_assert_breakpoint_ops = { | |
9516 | print_it_catch_assert, | |
9517 | print_one_catch_assert, | |
9518 | print_mention_catch_assert | |
9519 | }; | |
9520 | ||
9521 | /* Return non-zero if B is an Ada exception catchpoint. */ | |
9522 | ||
9523 | int | |
9524 | ada_exception_catchpoint_p (struct breakpoint *b) | |
9525 | { | |
9526 | return (b->ops == &catch_exception_breakpoint_ops | |
9527 | || b->ops == &catch_exception_unhandled_breakpoint_ops | |
9528 | || b->ops == &catch_assert_breakpoint_ops); | |
9529 | } | |
9530 | ||
f7f9143b JB |
9531 | /* Return a newly allocated copy of the first space-separated token |
9532 | in ARGSP, and then adjust ARGSP to point immediately after that | |
9533 | token. | |
9534 | ||
9535 | Return NULL if ARGPS does not contain any more tokens. */ | |
9536 | ||
9537 | static char * | |
9538 | ada_get_next_arg (char **argsp) | |
9539 | { | |
9540 | char *args = *argsp; | |
9541 | char *end; | |
9542 | char *result; | |
9543 | ||
9544 | /* Skip any leading white space. */ | |
9545 | ||
9546 | while (isspace (*args)) | |
9547 | args++; | |
9548 | ||
9549 | if (args[0] == '\0') | |
9550 | return NULL; /* No more arguments. */ | |
9551 | ||
9552 | /* Find the end of the current argument. */ | |
9553 | ||
9554 | end = args; | |
9555 | while (*end != '\0' && !isspace (*end)) | |
9556 | end++; | |
9557 | ||
9558 | /* Adjust ARGSP to point to the start of the next argument. */ | |
9559 | ||
9560 | *argsp = end; | |
9561 | ||
9562 | /* Make a copy of the current argument and return it. */ | |
9563 | ||
9564 | result = xmalloc (end - args + 1); | |
9565 | strncpy (result, args, end - args); | |
9566 | result[end - args] = '\0'; | |
9567 | ||
9568 | return result; | |
9569 | } | |
9570 | ||
9571 | /* Split the arguments specified in a "catch exception" command. | |
9572 | Set EX to the appropriate catchpoint type. | |
9573 | Set EXP_STRING to the name of the specific exception if | |
9574 | specified by the user. */ | |
9575 | ||
9576 | static void | |
9577 | catch_ada_exception_command_split (char *args, | |
9578 | enum exception_catchpoint_kind *ex, | |
9579 | char **exp_string) | |
9580 | { | |
9581 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); | |
9582 | char *exception_name; | |
9583 | ||
9584 | exception_name = ada_get_next_arg (&args); | |
9585 | make_cleanup (xfree, exception_name); | |
9586 | ||
9587 | /* Check that we do not have any more arguments. Anything else | |
9588 | is unexpected. */ | |
9589 | ||
9590 | while (isspace (*args)) | |
9591 | args++; | |
9592 | ||
9593 | if (args[0] != '\0') | |
9594 | error (_("Junk at end of expression")); | |
9595 | ||
9596 | discard_cleanups (old_chain); | |
9597 | ||
9598 | if (exception_name == NULL) | |
9599 | { | |
9600 | /* Catch all exceptions. */ | |
9601 | *ex = ex_catch_exception; | |
9602 | *exp_string = NULL; | |
9603 | } | |
9604 | else if (strcmp (exception_name, "unhandled") == 0) | |
9605 | { | |
9606 | /* Catch unhandled exceptions. */ | |
9607 | *ex = ex_catch_exception_unhandled; | |
9608 | *exp_string = NULL; | |
9609 | } | |
9610 | else | |
9611 | { | |
9612 | /* Catch a specific exception. */ | |
9613 | *ex = ex_catch_exception; | |
9614 | *exp_string = exception_name; | |
9615 | } | |
9616 | } | |
9617 | ||
9618 | /* Return the name of the symbol on which we should break in order to | |
9619 | implement a catchpoint of the EX kind. */ | |
9620 | ||
9621 | static const char * | |
9622 | ada_exception_sym_name (enum exception_catchpoint_kind ex) | |
9623 | { | |
0259addd JB |
9624 | gdb_assert (exception_info != NULL); |
9625 | ||
f7f9143b JB |
9626 | switch (ex) |
9627 | { | |
9628 | case ex_catch_exception: | |
0259addd | 9629 | return (exception_info->catch_exception_sym); |
f7f9143b JB |
9630 | break; |
9631 | case ex_catch_exception_unhandled: | |
0259addd | 9632 | return (exception_info->catch_exception_unhandled_sym); |
f7f9143b JB |
9633 | break; |
9634 | case ex_catch_assert: | |
0259addd | 9635 | return (exception_info->catch_assert_sym); |
f7f9143b JB |
9636 | break; |
9637 | default: | |
9638 | internal_error (__FILE__, __LINE__, | |
9639 | _("unexpected catchpoint kind (%d)"), ex); | |
9640 | } | |
9641 | } | |
9642 | ||
9643 | /* Return the breakpoint ops "virtual table" used for catchpoints | |
9644 | of the EX kind. */ | |
9645 | ||
9646 | static struct breakpoint_ops * | |
4b9eee8c | 9647 | ada_exception_breakpoint_ops (enum exception_catchpoint_kind ex) |
f7f9143b JB |
9648 | { |
9649 | switch (ex) | |
9650 | { | |
9651 | case ex_catch_exception: | |
9652 | return (&catch_exception_breakpoint_ops); | |
9653 | break; | |
9654 | case ex_catch_exception_unhandled: | |
9655 | return (&catch_exception_unhandled_breakpoint_ops); | |
9656 | break; | |
9657 | case ex_catch_assert: | |
9658 | return (&catch_assert_breakpoint_ops); | |
9659 | break; | |
9660 | default: | |
9661 | internal_error (__FILE__, __LINE__, | |
9662 | _("unexpected catchpoint kind (%d)"), ex); | |
9663 | } | |
9664 | } | |
9665 | ||
9666 | /* Return the condition that will be used to match the current exception | |
9667 | being raised with the exception that the user wants to catch. This | |
9668 | assumes that this condition is used when the inferior just triggered | |
9669 | an exception catchpoint. | |
9670 | ||
9671 | The string returned is a newly allocated string that needs to be | |
9672 | deallocated later. */ | |
9673 | ||
9674 | static char * | |
9675 | ada_exception_catchpoint_cond_string (const char *exp_string) | |
9676 | { | |
9677 | return xstrprintf ("long_integer (e) = long_integer (&%s)", exp_string); | |
9678 | } | |
9679 | ||
9680 | /* Return the expression corresponding to COND_STRING evaluated at SAL. */ | |
9681 | ||
9682 | static struct expression * | |
9683 | ada_parse_catchpoint_condition (char *cond_string, | |
9684 | struct symtab_and_line sal) | |
9685 | { | |
9686 | return (parse_exp_1 (&cond_string, block_for_pc (sal.pc), 0)); | |
9687 | } | |
9688 | ||
9689 | /* Return the symtab_and_line that should be used to insert an exception | |
9690 | catchpoint of the TYPE kind. | |
9691 | ||
9692 | EX_STRING should contain the name of a specific exception | |
9693 | that the catchpoint should catch, or NULL otherwise. | |
9694 | ||
9695 | The idea behind all the remaining parameters is that their names match | |
9696 | the name of certain fields in the breakpoint structure that are used to | |
9697 | handle exception catchpoints. This function returns the value to which | |
9698 | these fields should be set, depending on the type of catchpoint we need | |
9699 | to create. | |
9700 | ||
9701 | If COND and COND_STRING are both non-NULL, any value they might | |
9702 | hold will be free'ed, and then replaced by newly allocated ones. | |
9703 | These parameters are left untouched otherwise. */ | |
9704 | ||
9705 | static struct symtab_and_line | |
9706 | ada_exception_sal (enum exception_catchpoint_kind ex, char *exp_string, | |
9707 | char **addr_string, char **cond_string, | |
9708 | struct expression **cond, struct breakpoint_ops **ops) | |
9709 | { | |
9710 | const char *sym_name; | |
9711 | struct symbol *sym; | |
9712 | struct symtab_and_line sal; | |
9713 | ||
0259addd JB |
9714 | /* First, find out which exception support info to use. */ |
9715 | ada_exception_support_info_sniffer (); | |
9716 | ||
9717 | /* Then lookup the function on which we will break in order to catch | |
f7f9143b JB |
9718 | the Ada exceptions requested by the user. */ |
9719 | ||
9720 | sym_name = ada_exception_sym_name (ex); | |
9721 | sym = standard_lookup (sym_name, NULL, VAR_DOMAIN); | |
9722 | ||
9723 | /* The symbol we're looking up is provided by a unit in the GNAT runtime | |
9724 | that should be compiled with debugging information. As a result, we | |
9725 | expect to find that symbol in the symtabs. If we don't find it, then | |
9726 | the target most likely does not support Ada exceptions, or we cannot | |
9727 | insert exception breakpoints yet, because the GNAT runtime hasn't been | |
9728 | loaded yet. */ | |
9729 | ||
9730 | /* brobecker/2006-12-26: It is conceivable that the runtime was compiled | |
9731 | in such a way that no debugging information is produced for the symbol | |
9732 | we are looking for. In this case, we could search the minimal symbols | |
9733 | as a fall-back mechanism. This would still be operating in degraded | |
9734 | mode, however, as we would still be missing the debugging information | |
9735 | that is needed in order to extract the name of the exception being | |
9736 | raised (this name is printed in the catchpoint message, and is also | |
9737 | used when trying to catch a specific exception). We do not handle | |
9738 | this case for now. */ | |
9739 | ||
9740 | if (sym == NULL) | |
0259addd | 9741 | error (_("Unable to break on '%s' in this configuration."), sym_name); |
f7f9143b JB |
9742 | |
9743 | /* Make sure that the symbol we found corresponds to a function. */ | |
9744 | if (SYMBOL_CLASS (sym) != LOC_BLOCK) | |
9745 | error (_("Symbol \"%s\" is not a function (class = %d)"), | |
9746 | sym_name, SYMBOL_CLASS (sym)); | |
9747 | ||
9748 | sal = find_function_start_sal (sym, 1); | |
9749 | ||
9750 | /* Set ADDR_STRING. */ | |
9751 | ||
9752 | *addr_string = xstrdup (sym_name); | |
9753 | ||
9754 | /* Set the COND and COND_STRING (if not NULL). */ | |
9755 | ||
9756 | if (cond_string != NULL && cond != NULL) | |
9757 | { | |
9758 | if (*cond_string != NULL) | |
9759 | { | |
9760 | xfree (*cond_string); | |
9761 | *cond_string = NULL; | |
9762 | } | |
9763 | if (*cond != NULL) | |
9764 | { | |
9765 | xfree (*cond); | |
9766 | *cond = NULL; | |
9767 | } | |
9768 | if (exp_string != NULL) | |
9769 | { | |
9770 | *cond_string = ada_exception_catchpoint_cond_string (exp_string); | |
9771 | *cond = ada_parse_catchpoint_condition (*cond_string, sal); | |
9772 | } | |
9773 | } | |
9774 | ||
9775 | /* Set OPS. */ | |
4b9eee8c | 9776 | *ops = ada_exception_breakpoint_ops (ex); |
f7f9143b JB |
9777 | |
9778 | return sal; | |
9779 | } | |
9780 | ||
9781 | /* Parse the arguments (ARGS) of the "catch exception" command. | |
9782 | ||
9783 | Set TYPE to the appropriate exception catchpoint type. | |
9784 | If the user asked the catchpoint to catch only a specific | |
9785 | exception, then save the exception name in ADDR_STRING. | |
9786 | ||
9787 | See ada_exception_sal for a description of all the remaining | |
9788 | function arguments of this function. */ | |
9789 | ||
9790 | struct symtab_and_line | |
9791 | ada_decode_exception_location (char *args, char **addr_string, | |
9792 | char **exp_string, char **cond_string, | |
9793 | struct expression **cond, | |
9794 | struct breakpoint_ops **ops) | |
9795 | { | |
9796 | enum exception_catchpoint_kind ex; | |
9797 | ||
9798 | catch_ada_exception_command_split (args, &ex, exp_string); | |
9799 | return ada_exception_sal (ex, *exp_string, addr_string, cond_string, | |
9800 | cond, ops); | |
9801 | } | |
9802 | ||
9803 | struct symtab_and_line | |
9804 | ada_decode_assert_location (char *args, char **addr_string, | |
9805 | struct breakpoint_ops **ops) | |
9806 | { | |
9807 | /* Check that no argument where provided at the end of the command. */ | |
9808 | ||
9809 | if (args != NULL) | |
9810 | { | |
9811 | while (isspace (*args)) | |
9812 | args++; | |
9813 | if (*args != '\0') | |
9814 | error (_("Junk at end of arguments.")); | |
9815 | } | |
9816 | ||
9817 | return ada_exception_sal (ex_catch_assert, NULL, addr_string, NULL, NULL, | |
9818 | ops); | |
9819 | } | |
9820 | ||
4c4b4cd2 PH |
9821 | /* Operators */ |
9822 | /* Information about operators given special treatment in functions | |
9823 | below. */ | |
9824 | /* Format: OP_DEFN (<operator>, <operator length>, <# args>, <binop>). */ | |
9825 | ||
9826 | #define ADA_OPERATORS \ | |
9827 | OP_DEFN (OP_VAR_VALUE, 4, 0, 0) \ | |
9828 | OP_DEFN (BINOP_IN_BOUNDS, 3, 2, 0) \ | |
9829 | OP_DEFN (TERNOP_IN_RANGE, 1, 3, 0) \ | |
9830 | OP_DEFN (OP_ATR_FIRST, 1, 2, 0) \ | |
9831 | OP_DEFN (OP_ATR_LAST, 1, 2, 0) \ | |
9832 | OP_DEFN (OP_ATR_LENGTH, 1, 2, 0) \ | |
9833 | OP_DEFN (OP_ATR_IMAGE, 1, 2, 0) \ | |
9834 | OP_DEFN (OP_ATR_MAX, 1, 3, 0) \ | |
9835 | OP_DEFN (OP_ATR_MIN, 1, 3, 0) \ | |
9836 | OP_DEFN (OP_ATR_MODULUS, 1, 1, 0) \ | |
9837 | OP_DEFN (OP_ATR_POS, 1, 2, 0) \ | |
9838 | OP_DEFN (OP_ATR_SIZE, 1, 1, 0) \ | |
9839 | OP_DEFN (OP_ATR_TAG, 1, 1, 0) \ | |
9840 | OP_DEFN (OP_ATR_VAL, 1, 2, 0) \ | |
9841 | OP_DEFN (UNOP_QUAL, 3, 1, 0) \ | |
52ce6436 PH |
9842 | OP_DEFN (UNOP_IN_RANGE, 3, 1, 0) \ |
9843 | OP_DEFN (OP_OTHERS, 1, 1, 0) \ | |
9844 | OP_DEFN (OP_POSITIONAL, 3, 1, 0) \ | |
9845 | OP_DEFN (OP_DISCRETE_RANGE, 1, 2, 0) | |
4c4b4cd2 PH |
9846 | |
9847 | static void | |
9848 | ada_operator_length (struct expression *exp, int pc, int *oplenp, int *argsp) | |
9849 | { | |
9850 | switch (exp->elts[pc - 1].opcode) | |
9851 | { | |
76a01679 | 9852 | default: |
4c4b4cd2 PH |
9853 | operator_length_standard (exp, pc, oplenp, argsp); |
9854 | break; | |
9855 | ||
9856 | #define OP_DEFN(op, len, args, binop) \ | |
9857 | case op: *oplenp = len; *argsp = args; break; | |
9858 | ADA_OPERATORS; | |
9859 | #undef OP_DEFN | |
52ce6436 PH |
9860 | |
9861 | case OP_AGGREGATE: | |
9862 | *oplenp = 3; | |
9863 | *argsp = longest_to_int (exp->elts[pc - 2].longconst); | |
9864 | break; | |
9865 | ||
9866 | case OP_CHOICES: | |
9867 | *oplenp = 3; | |
9868 | *argsp = longest_to_int (exp->elts[pc - 2].longconst) + 1; | |
9869 | break; | |
4c4b4cd2 PH |
9870 | } |
9871 | } | |
9872 | ||
9873 | static char * | |
9874 | ada_op_name (enum exp_opcode opcode) | |
9875 | { | |
9876 | switch (opcode) | |
9877 | { | |
76a01679 | 9878 | default: |
4c4b4cd2 | 9879 | return op_name_standard (opcode); |
52ce6436 | 9880 | |
4c4b4cd2 PH |
9881 | #define OP_DEFN(op, len, args, binop) case op: return #op; |
9882 | ADA_OPERATORS; | |
9883 | #undef OP_DEFN | |
52ce6436 PH |
9884 | |
9885 | case OP_AGGREGATE: | |
9886 | return "OP_AGGREGATE"; | |
9887 | case OP_CHOICES: | |
9888 | return "OP_CHOICES"; | |
9889 | case OP_NAME: | |
9890 | return "OP_NAME"; | |
4c4b4cd2 PH |
9891 | } |
9892 | } | |
9893 | ||
9894 | /* As for operator_length, but assumes PC is pointing at the first | |
9895 | element of the operator, and gives meaningful results only for the | |
52ce6436 | 9896 | Ada-specific operators, returning 0 for *OPLENP and *ARGSP otherwise. */ |
4c4b4cd2 PH |
9897 | |
9898 | static void | |
76a01679 JB |
9899 | ada_forward_operator_length (struct expression *exp, int pc, |
9900 | int *oplenp, int *argsp) | |
4c4b4cd2 | 9901 | { |
76a01679 | 9902 | switch (exp->elts[pc].opcode) |
4c4b4cd2 PH |
9903 | { |
9904 | default: | |
9905 | *oplenp = *argsp = 0; | |
9906 | break; | |
52ce6436 | 9907 | |
4c4b4cd2 PH |
9908 | #define OP_DEFN(op, len, args, binop) \ |
9909 | case op: *oplenp = len; *argsp = args; break; | |
9910 | ADA_OPERATORS; | |
9911 | #undef OP_DEFN | |
52ce6436 PH |
9912 | |
9913 | case OP_AGGREGATE: | |
9914 | *oplenp = 3; | |
9915 | *argsp = longest_to_int (exp->elts[pc + 1].longconst); | |
9916 | break; | |
9917 | ||
9918 | case OP_CHOICES: | |
9919 | *oplenp = 3; | |
9920 | *argsp = longest_to_int (exp->elts[pc + 1].longconst) + 1; | |
9921 | break; | |
9922 | ||
9923 | case OP_STRING: | |
9924 | case OP_NAME: | |
9925 | { | |
9926 | int len = longest_to_int (exp->elts[pc + 1].longconst); | |
9927 | *oplenp = 4 + BYTES_TO_EXP_ELEM (len + 1); | |
9928 | *argsp = 0; | |
9929 | break; | |
9930 | } | |
4c4b4cd2 PH |
9931 | } |
9932 | } | |
9933 | ||
9934 | static int | |
9935 | ada_dump_subexp_body (struct expression *exp, struct ui_file *stream, int elt) | |
9936 | { | |
9937 | enum exp_opcode op = exp->elts[elt].opcode; | |
9938 | int oplen, nargs; | |
9939 | int pc = elt; | |
9940 | int i; | |
76a01679 | 9941 | |
4c4b4cd2 PH |
9942 | ada_forward_operator_length (exp, elt, &oplen, &nargs); |
9943 | ||
76a01679 | 9944 | switch (op) |
4c4b4cd2 | 9945 | { |
76a01679 | 9946 | /* Ada attributes ('Foo). */ |
4c4b4cd2 PH |
9947 | case OP_ATR_FIRST: |
9948 | case OP_ATR_LAST: | |
9949 | case OP_ATR_LENGTH: | |
9950 | case OP_ATR_IMAGE: | |
9951 | case OP_ATR_MAX: | |
9952 | case OP_ATR_MIN: | |
9953 | case OP_ATR_MODULUS: | |
9954 | case OP_ATR_POS: | |
9955 | case OP_ATR_SIZE: | |
9956 | case OP_ATR_TAG: | |
9957 | case OP_ATR_VAL: | |
9958 | break; | |
9959 | ||
9960 | case UNOP_IN_RANGE: | |
9961 | case UNOP_QUAL: | |
323e0a4a AC |
9962 | /* XXX: gdb_sprint_host_address, type_sprint */ |
9963 | fprintf_filtered (stream, _("Type @")); | |
4c4b4cd2 PH |
9964 | gdb_print_host_address (exp->elts[pc + 1].type, stream); |
9965 | fprintf_filtered (stream, " ("); | |
9966 | type_print (exp->elts[pc + 1].type, NULL, stream, 0); | |
9967 | fprintf_filtered (stream, ")"); | |
9968 | break; | |
9969 | case BINOP_IN_BOUNDS: | |
52ce6436 PH |
9970 | fprintf_filtered (stream, " (%d)", |
9971 | longest_to_int (exp->elts[pc + 2].longconst)); | |
4c4b4cd2 PH |
9972 | break; |
9973 | case TERNOP_IN_RANGE: | |
9974 | break; | |
9975 | ||
52ce6436 PH |
9976 | case OP_AGGREGATE: |
9977 | case OP_OTHERS: | |
9978 | case OP_DISCRETE_RANGE: | |
9979 | case OP_POSITIONAL: | |
9980 | case OP_CHOICES: | |
9981 | break; | |
9982 | ||
9983 | case OP_NAME: | |
9984 | case OP_STRING: | |
9985 | { | |
9986 | char *name = &exp->elts[elt + 2].string; | |
9987 | int len = longest_to_int (exp->elts[elt + 1].longconst); | |
9988 | fprintf_filtered (stream, "Text: `%.*s'", len, name); | |
9989 | break; | |
9990 | } | |
9991 | ||
4c4b4cd2 PH |
9992 | default: |
9993 | return dump_subexp_body_standard (exp, stream, elt); | |
9994 | } | |
9995 | ||
9996 | elt += oplen; | |
9997 | for (i = 0; i < nargs; i += 1) | |
9998 | elt = dump_subexp (exp, stream, elt); | |
9999 | ||
10000 | return elt; | |
10001 | } | |
10002 | ||
10003 | /* The Ada extension of print_subexp (q.v.). */ | |
10004 | ||
76a01679 JB |
10005 | static void |
10006 | ada_print_subexp (struct expression *exp, int *pos, | |
10007 | struct ui_file *stream, enum precedence prec) | |
4c4b4cd2 | 10008 | { |
52ce6436 | 10009 | int oplen, nargs, i; |
4c4b4cd2 PH |
10010 | int pc = *pos; |
10011 | enum exp_opcode op = exp->elts[pc].opcode; | |
10012 | ||
10013 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
10014 | ||
52ce6436 | 10015 | *pos += oplen; |
4c4b4cd2 PH |
10016 | switch (op) |
10017 | { | |
10018 | default: | |
52ce6436 | 10019 | *pos -= oplen; |
4c4b4cd2 PH |
10020 | print_subexp_standard (exp, pos, stream, prec); |
10021 | return; | |
10022 | ||
10023 | case OP_VAR_VALUE: | |
4c4b4cd2 PH |
10024 | fputs_filtered (SYMBOL_NATURAL_NAME (exp->elts[pc + 2].symbol), stream); |
10025 | return; | |
10026 | ||
10027 | case BINOP_IN_BOUNDS: | |
323e0a4a | 10028 | /* XXX: sprint_subexp */ |
4c4b4cd2 | 10029 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 10030 | fputs_filtered (" in ", stream); |
4c4b4cd2 | 10031 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 10032 | fputs_filtered ("'range", stream); |
4c4b4cd2 | 10033 | if (exp->elts[pc + 1].longconst > 1) |
76a01679 JB |
10034 | fprintf_filtered (stream, "(%ld)", |
10035 | (long) exp->elts[pc + 1].longconst); | |
4c4b4cd2 PH |
10036 | return; |
10037 | ||
10038 | case TERNOP_IN_RANGE: | |
4c4b4cd2 | 10039 | if (prec >= PREC_EQUAL) |
76a01679 | 10040 | fputs_filtered ("(", stream); |
323e0a4a | 10041 | /* XXX: sprint_subexp */ |
4c4b4cd2 | 10042 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 10043 | fputs_filtered (" in ", stream); |
4c4b4cd2 PH |
10044 | print_subexp (exp, pos, stream, PREC_EQUAL); |
10045 | fputs_filtered (" .. ", stream); | |
10046 | print_subexp (exp, pos, stream, PREC_EQUAL); | |
10047 | if (prec >= PREC_EQUAL) | |
76a01679 JB |
10048 | fputs_filtered (")", stream); |
10049 | return; | |
4c4b4cd2 PH |
10050 | |
10051 | case OP_ATR_FIRST: | |
10052 | case OP_ATR_LAST: | |
10053 | case OP_ATR_LENGTH: | |
10054 | case OP_ATR_IMAGE: | |
10055 | case OP_ATR_MAX: | |
10056 | case OP_ATR_MIN: | |
10057 | case OP_ATR_MODULUS: | |
10058 | case OP_ATR_POS: | |
10059 | case OP_ATR_SIZE: | |
10060 | case OP_ATR_TAG: | |
10061 | case OP_ATR_VAL: | |
4c4b4cd2 | 10062 | if (exp->elts[*pos].opcode == OP_TYPE) |
76a01679 JB |
10063 | { |
10064 | if (TYPE_CODE (exp->elts[*pos + 1].type) != TYPE_CODE_VOID) | |
10065 | LA_PRINT_TYPE (exp->elts[*pos + 1].type, "", stream, 0, 0); | |
10066 | *pos += 3; | |
10067 | } | |
4c4b4cd2 | 10068 | else |
76a01679 | 10069 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
4c4b4cd2 PH |
10070 | fprintf_filtered (stream, "'%s", ada_attribute_name (op)); |
10071 | if (nargs > 1) | |
76a01679 JB |
10072 | { |
10073 | int tem; | |
10074 | for (tem = 1; tem < nargs; tem += 1) | |
10075 | { | |
10076 | fputs_filtered ((tem == 1) ? " (" : ", ", stream); | |
10077 | print_subexp (exp, pos, stream, PREC_ABOVE_COMMA); | |
10078 | } | |
10079 | fputs_filtered (")", stream); | |
10080 | } | |
4c4b4cd2 | 10081 | return; |
14f9c5c9 | 10082 | |
4c4b4cd2 | 10083 | case UNOP_QUAL: |
4c4b4cd2 PH |
10084 | type_print (exp->elts[pc + 1].type, "", stream, 0); |
10085 | fputs_filtered ("'(", stream); | |
10086 | print_subexp (exp, pos, stream, PREC_PREFIX); | |
10087 | fputs_filtered (")", stream); | |
10088 | return; | |
14f9c5c9 | 10089 | |
4c4b4cd2 | 10090 | case UNOP_IN_RANGE: |
323e0a4a | 10091 | /* XXX: sprint_subexp */ |
4c4b4cd2 | 10092 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 10093 | fputs_filtered (" in ", stream); |
4c4b4cd2 PH |
10094 | LA_PRINT_TYPE (exp->elts[pc + 1].type, "", stream, 1, 0); |
10095 | return; | |
52ce6436 PH |
10096 | |
10097 | case OP_DISCRETE_RANGE: | |
10098 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10099 | fputs_filtered ("..", stream); | |
10100 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10101 | return; | |
10102 | ||
10103 | case OP_OTHERS: | |
10104 | fputs_filtered ("others => ", stream); | |
10105 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10106 | return; | |
10107 | ||
10108 | case OP_CHOICES: | |
10109 | for (i = 0; i < nargs-1; i += 1) | |
10110 | { | |
10111 | if (i > 0) | |
10112 | fputs_filtered ("|", stream); | |
10113 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10114 | } | |
10115 | fputs_filtered (" => ", stream); | |
10116 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10117 | return; | |
10118 | ||
10119 | case OP_POSITIONAL: | |
10120 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10121 | return; | |
10122 | ||
10123 | case OP_AGGREGATE: | |
10124 | fputs_filtered ("(", stream); | |
10125 | for (i = 0; i < nargs; i += 1) | |
10126 | { | |
10127 | if (i > 0) | |
10128 | fputs_filtered (", ", stream); | |
10129 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
10130 | } | |
10131 | fputs_filtered (")", stream); | |
10132 | return; | |
4c4b4cd2 PH |
10133 | } |
10134 | } | |
14f9c5c9 AS |
10135 | |
10136 | /* Table mapping opcodes into strings for printing operators | |
10137 | and precedences of the operators. */ | |
10138 | ||
d2e4a39e AS |
10139 | static const struct op_print ada_op_print_tab[] = { |
10140 | {":=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
10141 | {"or else", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
10142 | {"and then", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
10143 | {"or", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
10144 | {"xor", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
10145 | {"and", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
10146 | {"=", BINOP_EQUAL, PREC_EQUAL, 0}, | |
10147 | {"/=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
10148 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
10149 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
10150 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
10151 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
10152 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
10153 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
10154 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
10155 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
10156 | {"&", BINOP_CONCAT, PREC_ADD, 0}, | |
10157 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
10158 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
10159 | {"rem", BINOP_REM, PREC_MUL, 0}, | |
10160 | {"mod", BINOP_MOD, PREC_MUL, 0}, | |
10161 | {"**", BINOP_EXP, PREC_REPEAT, 0}, | |
10162 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
10163 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
10164 | {"+", UNOP_PLUS, PREC_PREFIX, 0}, | |
10165 | {"not ", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
10166 | {"not ", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
10167 | {"abs ", UNOP_ABS, PREC_PREFIX, 0}, | |
4c4b4cd2 PH |
10168 | {".all", UNOP_IND, PREC_SUFFIX, 1}, |
10169 | {"'access", UNOP_ADDR, PREC_SUFFIX, 1}, | |
10170 | {"'size", OP_ATR_SIZE, PREC_SUFFIX, 1}, | |
d2e4a39e | 10171 | {NULL, 0, 0, 0} |
14f9c5c9 AS |
10172 | }; |
10173 | \f | |
6c038f32 | 10174 | /* Fundamental Ada Types */ |
14f9c5c9 AS |
10175 | |
10176 | /* Create a fundamental Ada type using default reasonable for the current | |
10177 | target machine. | |
10178 | ||
10179 | Some object/debugging file formats (DWARF version 1, COFF, etc) do not | |
10180 | define fundamental types such as "int" or "double". Others (stabs or | |
10181 | DWARF version 2, etc) do define fundamental types. For the formats which | |
10182 | don't provide fundamental types, gdb can create such types using this | |
10183 | function. | |
10184 | ||
10185 | FIXME: Some compilers distinguish explicitly signed integral types | |
10186 | (signed short, signed int, signed long) from "regular" integral types | |
10187 | (short, int, long) in the debugging information. There is some dis- | |
10188 | agreement as to how useful this feature is. In particular, gcc does | |
10189 | not support this. Also, only some debugging formats allow the | |
10190 | distinction to be passed on to a debugger. For now, we always just | |
10191 | use "short", "int", or "long" as the type name, for both the implicit | |
10192 | and explicitly signed types. This also makes life easier for the | |
10193 | gdb test suite since we don't have to account for the differences | |
10194 | in output depending upon what the compiler and debugging format | |
10195 | support. We will probably have to re-examine the issue when gdb | |
10196 | starts taking it's fundamental type information directly from the | |
10197 | debugging information supplied by the compiler. fnf@cygnus.com */ | |
10198 | ||
10199 | static struct type * | |
ebf56fd3 | 10200 | ada_create_fundamental_type (struct objfile *objfile, int typeid) |
14f9c5c9 AS |
10201 | { |
10202 | struct type *type = NULL; | |
10203 | ||
10204 | switch (typeid) | |
10205 | { | |
d2e4a39e AS |
10206 | default: |
10207 | /* FIXME: For now, if we are asked to produce a type not in this | |
10208 | language, create the equivalent of a C integer type with the | |
10209 | name "<?type?>". When all the dust settles from the type | |
4c4b4cd2 | 10210 | reconstruction work, this should probably become an error. */ |
d2e4a39e | 10211 | type = init_type (TYPE_CODE_INT, |
9a76efb6 | 10212 | gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT, |
4c4b4cd2 | 10213 | 0, "<?type?>", objfile); |
323e0a4a | 10214 | warning (_("internal error: no Ada fundamental type %d"), typeid); |
d2e4a39e AS |
10215 | break; |
10216 | case FT_VOID: | |
10217 | type = init_type (TYPE_CODE_VOID, | |
4c4b4cd2 PH |
10218 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
10219 | 0, "void", objfile); | |
d2e4a39e AS |
10220 | break; |
10221 | case FT_CHAR: | |
10222 | type = init_type (TYPE_CODE_INT, | |
4c4b4cd2 PH |
10223 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
10224 | 0, "character", objfile); | |
d2e4a39e AS |
10225 | break; |
10226 | case FT_SIGNED_CHAR: | |
10227 | type = init_type (TYPE_CODE_INT, | |
4c4b4cd2 PH |
10228 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
10229 | 0, "signed char", objfile); | |
d2e4a39e AS |
10230 | break; |
10231 | case FT_UNSIGNED_CHAR: | |
10232 | type = init_type (TYPE_CODE_INT, | |
4c4b4cd2 PH |
10233 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
10234 | TYPE_FLAG_UNSIGNED, "unsigned char", objfile); | |
d2e4a39e AS |
10235 | break; |
10236 | case FT_SHORT: | |
10237 | type = init_type (TYPE_CODE_INT, | |
9a76efb6 | 10238 | gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT, |
4c4b4cd2 | 10239 | 0, "short_integer", objfile); |
d2e4a39e AS |
10240 | break; |
10241 | case FT_SIGNED_SHORT: | |
10242 | type = init_type (TYPE_CODE_INT, | |
9a76efb6 | 10243 | gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT, |
4c4b4cd2 | 10244 | 0, "short_integer", objfile); |
d2e4a39e AS |
10245 | break; |
10246 | case FT_UNSIGNED_SHORT: | |
10247 | type = init_type (TYPE_CODE_INT, | |
9a76efb6 | 10248 | gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT, |
4c4b4cd2 | 10249 | TYPE_FLAG_UNSIGNED, "unsigned short", objfile); |
d2e4a39e AS |
10250 | break; |
10251 | case FT_INTEGER: | |
10252 | type = init_type (TYPE_CODE_INT, | |
9a76efb6 | 10253 | gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT, |
4c4b4cd2 | 10254 | 0, "integer", objfile); |
d2e4a39e AS |
10255 | break; |
10256 | case FT_SIGNED_INTEGER: | |
9a76efb6 UW |
10257 | type = init_type (TYPE_CODE_INT, |
10258 | gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT, | |
72d5681a | 10259 | 0, "integer", objfile); /* FIXME -fnf */ |
d2e4a39e AS |
10260 | break; |
10261 | case FT_UNSIGNED_INTEGER: | |
10262 | type = init_type (TYPE_CODE_INT, | |
9a76efb6 | 10263 | gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT, |
4c4b4cd2 | 10264 | TYPE_FLAG_UNSIGNED, "unsigned int", objfile); |
d2e4a39e AS |
10265 | break; |
10266 | case FT_LONG: | |
10267 | type = init_type (TYPE_CODE_INT, | |
9a76efb6 | 10268 | gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT, |
4c4b4cd2 | 10269 | 0, "long_integer", objfile); |
d2e4a39e AS |
10270 | break; |
10271 | case FT_SIGNED_LONG: | |
10272 | type = init_type (TYPE_CODE_INT, | |
9a76efb6 | 10273 | gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT, |
4c4b4cd2 | 10274 | 0, "long_integer", objfile); |
d2e4a39e AS |
10275 | break; |
10276 | case FT_UNSIGNED_LONG: | |
10277 | type = init_type (TYPE_CODE_INT, | |
9a76efb6 | 10278 | gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT, |
4c4b4cd2 | 10279 | TYPE_FLAG_UNSIGNED, "unsigned long", objfile); |
d2e4a39e AS |
10280 | break; |
10281 | case FT_LONG_LONG: | |
10282 | type = init_type (TYPE_CODE_INT, | |
9a76efb6 UW |
10283 | gdbarch_long_long_bit (current_gdbarch) |
10284 | / TARGET_CHAR_BIT, | |
10285 | 0, "long_long_integer", objfile); | |
d2e4a39e AS |
10286 | break; |
10287 | case FT_SIGNED_LONG_LONG: | |
10288 | type = init_type (TYPE_CODE_INT, | |
9a76efb6 UW |
10289 | gdbarch_long_long_bit (current_gdbarch) |
10290 | / TARGET_CHAR_BIT, | |
10291 | 0, "long_long_integer", objfile); | |
d2e4a39e AS |
10292 | break; |
10293 | case FT_UNSIGNED_LONG_LONG: | |
10294 | type = init_type (TYPE_CODE_INT, | |
9a76efb6 UW |
10295 | gdbarch_long_long_bit (current_gdbarch) |
10296 | / TARGET_CHAR_BIT, | |
10297 | TYPE_FLAG_UNSIGNED, "unsigned long long", objfile); | |
d2e4a39e AS |
10298 | break; |
10299 | case FT_FLOAT: | |
10300 | type = init_type (TYPE_CODE_FLT, | |
ea06eb3d | 10301 | gdbarch_float_bit (current_gdbarch) / TARGET_CHAR_BIT, |
4c4b4cd2 | 10302 | 0, "float", objfile); |
d2e4a39e AS |
10303 | break; |
10304 | case FT_DBL_PREC_FLOAT: | |
10305 | type = init_type (TYPE_CODE_FLT, | |
ea06eb3d | 10306 | gdbarch_double_bit (current_gdbarch) / TARGET_CHAR_BIT, |
4c4b4cd2 | 10307 | 0, "long_float", objfile); |
d2e4a39e AS |
10308 | break; |
10309 | case FT_EXT_PREC_FLOAT: | |
10310 | type = init_type (TYPE_CODE_FLT, | |
ea06eb3d UW |
10311 | gdbarch_long_double_bit (current_gdbarch) |
10312 | / TARGET_CHAR_BIT, | |
4c4b4cd2 | 10313 | 0, "long_long_float", objfile); |
d2e4a39e AS |
10314 | break; |
10315 | } | |
14f9c5c9 AS |
10316 | return (type); |
10317 | } | |
10318 | ||
72d5681a PH |
10319 | enum ada_primitive_types { |
10320 | ada_primitive_type_int, | |
10321 | ada_primitive_type_long, | |
10322 | ada_primitive_type_short, | |
10323 | ada_primitive_type_char, | |
10324 | ada_primitive_type_float, | |
10325 | ada_primitive_type_double, | |
10326 | ada_primitive_type_void, | |
10327 | ada_primitive_type_long_long, | |
10328 | ada_primitive_type_long_double, | |
10329 | ada_primitive_type_natural, | |
10330 | ada_primitive_type_positive, | |
10331 | ada_primitive_type_system_address, | |
10332 | nr_ada_primitive_types | |
10333 | }; | |
6c038f32 PH |
10334 | |
10335 | static void | |
72d5681a PH |
10336 | ada_language_arch_info (struct gdbarch *current_gdbarch, |
10337 | struct language_arch_info *lai) | |
10338 | { | |
10339 | const struct builtin_type *builtin = builtin_type (current_gdbarch); | |
10340 | lai->primitive_type_vector | |
10341 | = GDBARCH_OBSTACK_CALLOC (current_gdbarch, nr_ada_primitive_types + 1, | |
10342 | struct type *); | |
10343 | lai->primitive_type_vector [ada_primitive_type_int] = | |
9a76efb6 UW |
10344 | init_type (TYPE_CODE_INT, |
10345 | gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT, | |
10346 | 0, "integer", (struct objfile *) NULL); | |
72d5681a | 10347 | lai->primitive_type_vector [ada_primitive_type_long] = |
9a76efb6 UW |
10348 | init_type (TYPE_CODE_INT, |
10349 | gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT, | |
10350 | 0, "long_integer", (struct objfile *) NULL); | |
72d5681a | 10351 | lai->primitive_type_vector [ada_primitive_type_short] = |
9a76efb6 UW |
10352 | init_type (TYPE_CODE_INT, |
10353 | gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT, | |
10354 | 0, "short_integer", (struct objfile *) NULL); | |
61ee279c PH |
10355 | lai->string_char_type = |
10356 | lai->primitive_type_vector [ada_primitive_type_char] = | |
6c038f32 PH |
10357 | init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
10358 | 0, "character", (struct objfile *) NULL); | |
72d5681a | 10359 | lai->primitive_type_vector [ada_primitive_type_float] = |
ea06eb3d UW |
10360 | init_type (TYPE_CODE_FLT, |
10361 | gdbarch_float_bit (current_gdbarch)/ TARGET_CHAR_BIT, | |
6c038f32 | 10362 | 0, "float", (struct objfile *) NULL); |
72d5681a | 10363 | lai->primitive_type_vector [ada_primitive_type_double] = |
ea06eb3d UW |
10364 | init_type (TYPE_CODE_FLT, |
10365 | gdbarch_double_bit (current_gdbarch) / TARGET_CHAR_BIT, | |
6c038f32 | 10366 | 0, "long_float", (struct objfile *) NULL); |
72d5681a | 10367 | lai->primitive_type_vector [ada_primitive_type_long_long] = |
9a76efb6 UW |
10368 | init_type (TYPE_CODE_INT, |
10369 | gdbarch_long_long_bit (current_gdbarch) / TARGET_CHAR_BIT, | |
6c038f32 | 10370 | 0, "long_long_integer", (struct objfile *) NULL); |
72d5681a | 10371 | lai->primitive_type_vector [ada_primitive_type_long_double] = |
ea06eb3d UW |
10372 | init_type (TYPE_CODE_FLT, |
10373 | gdbarch_double_bit (current_gdbarch) / TARGET_CHAR_BIT, | |
6c038f32 | 10374 | 0, "long_long_float", (struct objfile *) NULL); |
72d5681a | 10375 | lai->primitive_type_vector [ada_primitive_type_natural] = |
9a76efb6 UW |
10376 | init_type (TYPE_CODE_INT, |
10377 | gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT, | |
10378 | 0, "natural", (struct objfile *) NULL); | |
72d5681a | 10379 | lai->primitive_type_vector [ada_primitive_type_positive] = |
9a76efb6 UW |
10380 | init_type (TYPE_CODE_INT, |
10381 | gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT, | |
10382 | 0, "positive", (struct objfile *) NULL); | |
72d5681a | 10383 | lai->primitive_type_vector [ada_primitive_type_void] = builtin->builtin_void; |
6c038f32 | 10384 | |
72d5681a | 10385 | lai->primitive_type_vector [ada_primitive_type_system_address] = |
6c038f32 PH |
10386 | lookup_pointer_type (init_type (TYPE_CODE_VOID, 1, 0, "void", |
10387 | (struct objfile *) NULL)); | |
72d5681a PH |
10388 | TYPE_NAME (lai->primitive_type_vector [ada_primitive_type_system_address]) |
10389 | = "system__address"; | |
6c038f32 | 10390 | } |
6c038f32 PH |
10391 | \f |
10392 | /* Language vector */ | |
10393 | ||
10394 | /* Not really used, but needed in the ada_language_defn. */ | |
10395 | ||
10396 | static void | |
10397 | emit_char (int c, struct ui_file *stream, int quoter) | |
10398 | { | |
10399 | ada_emit_char (c, stream, quoter, 1); | |
10400 | } | |
10401 | ||
10402 | static int | |
10403 | parse (void) | |
10404 | { | |
10405 | warnings_issued = 0; | |
10406 | return ada_parse (); | |
10407 | } | |
10408 | ||
10409 | static const struct exp_descriptor ada_exp_descriptor = { | |
10410 | ada_print_subexp, | |
10411 | ada_operator_length, | |
10412 | ada_op_name, | |
10413 | ada_dump_subexp_body, | |
10414 | ada_evaluate_subexp | |
10415 | }; | |
10416 | ||
10417 | const struct language_defn ada_language_defn = { | |
10418 | "ada", /* Language name */ | |
10419 | language_ada, | |
72d5681a | 10420 | NULL, |
6c038f32 PH |
10421 | range_check_off, |
10422 | type_check_off, | |
10423 | case_sensitive_on, /* Yes, Ada is case-insensitive, but | |
10424 | that's not quite what this means. */ | |
6c038f32 PH |
10425 | array_row_major, |
10426 | &ada_exp_descriptor, | |
10427 | parse, | |
10428 | ada_error, | |
10429 | resolve, | |
10430 | ada_printchar, /* Print a character constant */ | |
10431 | ada_printstr, /* Function to print string constant */ | |
10432 | emit_char, /* Function to print single char (not used) */ | |
10433 | ada_create_fundamental_type, /* Create fundamental type in this language */ | |
10434 | ada_print_type, /* Print a type using appropriate syntax */ | |
10435 | ada_val_print, /* Print a value using appropriate syntax */ | |
10436 | ada_value_print, /* Print a top-level value */ | |
10437 | NULL, /* Language specific skip_trampoline */ | |
10438 | NULL, /* value_of_this */ | |
10439 | ada_lookup_symbol_nonlocal, /* Looking up non-local symbols. */ | |
10440 | basic_lookup_transparent_type, /* lookup_transparent_type */ | |
10441 | ada_la_decode, /* Language specific symbol demangler */ | |
10442 | NULL, /* Language specific class_name_from_physname */ | |
10443 | ada_op_print_tab, /* expression operators for printing */ | |
10444 | 0, /* c-style arrays */ | |
10445 | 1, /* String lower bound */ | |
72d5681a | 10446 | NULL, |
6c038f32 | 10447 | ada_get_gdb_completer_word_break_characters, |
72d5681a | 10448 | ada_language_arch_info, |
e79af960 | 10449 | ada_print_array_index, |
6c038f32 PH |
10450 | LANG_MAGIC |
10451 | }; | |
10452 | ||
d2e4a39e | 10453 | void |
6c038f32 | 10454 | _initialize_ada_language (void) |
14f9c5c9 | 10455 | { |
6c038f32 PH |
10456 | add_language (&ada_language_defn); |
10457 | ||
10458 | varsize_limit = 65536; | |
6c038f32 PH |
10459 | |
10460 | obstack_init (&symbol_list_obstack); | |
10461 | ||
10462 | decoded_names_store = htab_create_alloc | |
10463 | (256, htab_hash_string, (int (*)(const void *, const void *)) streq, | |
10464 | NULL, xcalloc, xfree); | |
14f9c5c9 | 10465 | } |