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197e01b6 | 1 | /* Ada language support routines for GDB, the GNU debugger. Copyright (C) |
10a2c479 | 2 | |
ae6a3a4c TJB |
3 | 1992, 1993, 1994, 1997, 1998, 1999, 2000, 2003, 2004, 2005, 2007, 2008, |
4 | 2009 Free Software Foundation, Inc. | |
14f9c5c9 | 5 | |
a9762ec7 | 6 | This file is part of GDB. |
14f9c5c9 | 7 | |
a9762ec7 JB |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 3 of the License, or | |
11 | (at your option) any later version. | |
14f9c5c9 | 12 | |
a9762ec7 JB |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
14f9c5c9 | 17 | |
a9762ec7 JB |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
14f9c5c9 | 20 | |
96d887e8 | 21 | |
4c4b4cd2 | 22 | #include "defs.h" |
14f9c5c9 | 23 | #include <stdio.h> |
0c30c098 | 24 | #include "gdb_string.h" |
14f9c5c9 AS |
25 | #include <ctype.h> |
26 | #include <stdarg.h> | |
27 | #include "demangle.h" | |
4c4b4cd2 PH |
28 | #include "gdb_regex.h" |
29 | #include "frame.h" | |
14f9c5c9 AS |
30 | #include "symtab.h" |
31 | #include "gdbtypes.h" | |
32 | #include "gdbcmd.h" | |
33 | #include "expression.h" | |
34 | #include "parser-defs.h" | |
35 | #include "language.h" | |
36 | #include "c-lang.h" | |
37 | #include "inferior.h" | |
38 | #include "symfile.h" | |
39 | #include "objfiles.h" | |
40 | #include "breakpoint.h" | |
41 | #include "gdbcore.h" | |
4c4b4cd2 PH |
42 | #include "hashtab.h" |
43 | #include "gdb_obstack.h" | |
14f9c5c9 | 44 | #include "ada-lang.h" |
4c4b4cd2 PH |
45 | #include "completer.h" |
46 | #include "gdb_stat.h" | |
47 | #ifdef UI_OUT | |
14f9c5c9 | 48 | #include "ui-out.h" |
4c4b4cd2 | 49 | #endif |
fe898f56 | 50 | #include "block.h" |
04714b91 | 51 | #include "infcall.h" |
de4f826b | 52 | #include "dictionary.h" |
60250e8b | 53 | #include "exceptions.h" |
f7f9143b JB |
54 | #include "annotate.h" |
55 | #include "valprint.h" | |
9bbc9174 | 56 | #include "source.h" |
0259addd | 57 | #include "observer.h" |
2ba95b9b | 58 | #include "vec.h" |
14f9c5c9 | 59 | |
4c4b4cd2 PH |
60 | /* Define whether or not the C operator '/' truncates towards zero for |
61 | differently signed operands (truncation direction is undefined in C). | |
62 | Copied from valarith.c. */ | |
63 | ||
64 | #ifndef TRUNCATION_TOWARDS_ZERO | |
65 | #define TRUNCATION_TOWARDS_ZERO ((-5 / 2) == -2) | |
66 | #endif | |
67 | ||
4c4b4cd2 | 68 | static void extract_string (CORE_ADDR addr, char *buf); |
14f9c5c9 | 69 | |
50810684 | 70 | static void modify_general_field (struct type *, char *, LONGEST, int, int); |
14f9c5c9 | 71 | |
d2e4a39e | 72 | static struct type *desc_base_type (struct type *); |
14f9c5c9 | 73 | |
d2e4a39e | 74 | static struct type *desc_bounds_type (struct type *); |
14f9c5c9 | 75 | |
d2e4a39e | 76 | static struct value *desc_bounds (struct value *); |
14f9c5c9 | 77 | |
d2e4a39e | 78 | static int fat_pntr_bounds_bitpos (struct type *); |
14f9c5c9 | 79 | |
d2e4a39e | 80 | static int fat_pntr_bounds_bitsize (struct type *); |
14f9c5c9 | 81 | |
556bdfd4 | 82 | static struct type *desc_data_target_type (struct type *); |
14f9c5c9 | 83 | |
d2e4a39e | 84 | static struct value *desc_data (struct value *); |
14f9c5c9 | 85 | |
d2e4a39e | 86 | static int fat_pntr_data_bitpos (struct type *); |
14f9c5c9 | 87 | |
d2e4a39e | 88 | static int fat_pntr_data_bitsize (struct type *); |
14f9c5c9 | 89 | |
d2e4a39e | 90 | static struct value *desc_one_bound (struct value *, int, int); |
14f9c5c9 | 91 | |
d2e4a39e | 92 | static int desc_bound_bitpos (struct type *, int, int); |
14f9c5c9 | 93 | |
d2e4a39e | 94 | static int desc_bound_bitsize (struct type *, int, int); |
14f9c5c9 | 95 | |
d2e4a39e | 96 | static struct type *desc_index_type (struct type *, int); |
14f9c5c9 | 97 | |
d2e4a39e | 98 | static int desc_arity (struct type *); |
14f9c5c9 | 99 | |
d2e4a39e | 100 | static int ada_type_match (struct type *, struct type *, int); |
14f9c5c9 | 101 | |
d2e4a39e | 102 | static int ada_args_match (struct symbol *, struct value **, int); |
14f9c5c9 | 103 | |
4a399546 UW |
104 | static struct value *ensure_lval (struct value *, |
105 | struct gdbarch *, CORE_ADDR *); | |
14f9c5c9 | 106 | |
d2e4a39e | 107 | static struct value *make_array_descriptor (struct type *, struct value *, |
4a399546 | 108 | struct gdbarch *, CORE_ADDR *); |
14f9c5c9 | 109 | |
4c4b4cd2 | 110 | static void ada_add_block_symbols (struct obstack *, |
76a01679 | 111 | struct block *, const char *, |
2570f2b7 | 112 | domain_enum, struct objfile *, int); |
14f9c5c9 | 113 | |
4c4b4cd2 | 114 | static int is_nonfunction (struct ada_symbol_info *, int); |
14f9c5c9 | 115 | |
76a01679 | 116 | static void add_defn_to_vec (struct obstack *, struct symbol *, |
2570f2b7 | 117 | struct block *); |
14f9c5c9 | 118 | |
4c4b4cd2 PH |
119 | static int num_defns_collected (struct obstack *); |
120 | ||
121 | static struct ada_symbol_info *defns_collected (struct obstack *, int); | |
14f9c5c9 | 122 | |
d2e4a39e | 123 | static struct partial_symbol *ada_lookup_partial_symbol (struct partial_symtab |
76a01679 JB |
124 | *, const char *, int, |
125 | domain_enum, int); | |
14f9c5c9 | 126 | |
4c4b4cd2 | 127 | static struct value *resolve_subexp (struct expression **, int *, int, |
76a01679 | 128 | struct type *); |
14f9c5c9 | 129 | |
d2e4a39e | 130 | static void replace_operator_with_call (struct expression **, int, int, int, |
4c4b4cd2 | 131 | struct symbol *, struct block *); |
14f9c5c9 | 132 | |
d2e4a39e | 133 | static int possible_user_operator_p (enum exp_opcode, struct value **); |
14f9c5c9 | 134 | |
4c4b4cd2 PH |
135 | static char *ada_op_name (enum exp_opcode); |
136 | ||
137 | static const char *ada_decoded_op_name (enum exp_opcode); | |
14f9c5c9 | 138 | |
d2e4a39e | 139 | static int numeric_type_p (struct type *); |
14f9c5c9 | 140 | |
d2e4a39e | 141 | static int integer_type_p (struct type *); |
14f9c5c9 | 142 | |
d2e4a39e | 143 | static int scalar_type_p (struct type *); |
14f9c5c9 | 144 | |
d2e4a39e | 145 | static int discrete_type_p (struct type *); |
14f9c5c9 | 146 | |
aeb5907d JB |
147 | static enum ada_renaming_category parse_old_style_renaming (struct type *, |
148 | const char **, | |
149 | int *, | |
150 | const char **); | |
151 | ||
152 | static struct symbol *find_old_style_renaming_symbol (const char *, | |
153 | struct block *); | |
154 | ||
4c4b4cd2 | 155 | static struct type *ada_lookup_struct_elt_type (struct type *, char *, |
76a01679 | 156 | int, int, int *); |
4c4b4cd2 | 157 | |
d2e4a39e | 158 | static struct value *evaluate_subexp_type (struct expression *, int *); |
14f9c5c9 | 159 | |
d2e4a39e | 160 | static int is_dynamic_field (struct type *, int); |
14f9c5c9 | 161 | |
10a2c479 | 162 | static struct type *to_fixed_variant_branch_type (struct type *, |
fc1a4b47 | 163 | const gdb_byte *, |
4c4b4cd2 PH |
164 | CORE_ADDR, struct value *); |
165 | ||
166 | static struct type *to_fixed_array_type (struct type *, struct value *, int); | |
14f9c5c9 | 167 | |
d2e4a39e | 168 | static struct type *to_fixed_range_type (char *, struct value *, |
1ce677a4 | 169 | struct type *); |
14f9c5c9 | 170 | |
d2e4a39e | 171 | static struct type *to_static_fixed_type (struct type *); |
f192137b | 172 | static struct type *static_unwrap_type (struct type *type); |
14f9c5c9 | 173 | |
d2e4a39e | 174 | static struct value *unwrap_value (struct value *); |
14f9c5c9 | 175 | |
d2e4a39e | 176 | static struct type *packed_array_type (struct type *, long *); |
14f9c5c9 | 177 | |
d2e4a39e | 178 | static struct type *decode_packed_array_type (struct type *); |
14f9c5c9 | 179 | |
d2e4a39e | 180 | static struct value *decode_packed_array (struct value *); |
14f9c5c9 | 181 | |
d2e4a39e | 182 | static struct value *value_subscript_packed (struct value *, int, |
4c4b4cd2 | 183 | struct value **); |
14f9c5c9 | 184 | |
50810684 | 185 | static void move_bits (gdb_byte *, int, const gdb_byte *, int, int, int); |
52ce6436 | 186 | |
4c4b4cd2 PH |
187 | static struct value *coerce_unspec_val_to_type (struct value *, |
188 | struct type *); | |
14f9c5c9 | 189 | |
d2e4a39e | 190 | static struct value *get_var_value (char *, char *); |
14f9c5c9 | 191 | |
d2e4a39e | 192 | static int lesseq_defined_than (struct symbol *, struct symbol *); |
14f9c5c9 | 193 | |
d2e4a39e | 194 | static int equiv_types (struct type *, struct type *); |
14f9c5c9 | 195 | |
d2e4a39e | 196 | static int is_name_suffix (const char *); |
14f9c5c9 | 197 | |
d2e4a39e | 198 | static int wild_match (const char *, int, const char *); |
14f9c5c9 | 199 | |
d2e4a39e | 200 | static struct value *ada_coerce_ref (struct value *); |
14f9c5c9 | 201 | |
4c4b4cd2 PH |
202 | static LONGEST pos_atr (struct value *); |
203 | ||
3cb382c9 | 204 | static struct value *value_pos_atr (struct type *, struct value *); |
14f9c5c9 | 205 | |
d2e4a39e | 206 | static struct value *value_val_atr (struct type *, struct value *); |
14f9c5c9 | 207 | |
4c4b4cd2 PH |
208 | static struct symbol *standard_lookup (const char *, const struct block *, |
209 | domain_enum); | |
14f9c5c9 | 210 | |
4c4b4cd2 PH |
211 | static struct value *ada_search_struct_field (char *, struct value *, int, |
212 | struct type *); | |
213 | ||
214 | static struct value *ada_value_primitive_field (struct value *, int, int, | |
215 | struct type *); | |
216 | ||
76a01679 | 217 | static int find_struct_field (char *, struct type *, int, |
52ce6436 | 218 | struct type **, int *, int *, int *, int *); |
4c4b4cd2 PH |
219 | |
220 | static struct value *ada_to_fixed_value_create (struct type *, CORE_ADDR, | |
221 | struct value *); | |
222 | ||
223 | static struct value *ada_to_fixed_value (struct value *); | |
14f9c5c9 | 224 | |
4c4b4cd2 PH |
225 | static int ada_resolve_function (struct ada_symbol_info *, int, |
226 | struct value **, int, const char *, | |
227 | struct type *); | |
228 | ||
229 | static struct value *ada_coerce_to_simple_array (struct value *); | |
230 | ||
231 | static int ada_is_direct_array_type (struct type *); | |
232 | ||
72d5681a PH |
233 | static void ada_language_arch_info (struct gdbarch *, |
234 | struct language_arch_info *); | |
714e53ab PH |
235 | |
236 | static void check_size (const struct type *); | |
52ce6436 PH |
237 | |
238 | static struct value *ada_index_struct_field (int, struct value *, int, | |
239 | struct type *); | |
240 | ||
241 | static struct value *assign_aggregate (struct value *, struct value *, | |
242 | struct expression *, int *, enum noside); | |
243 | ||
244 | static void aggregate_assign_from_choices (struct value *, struct value *, | |
245 | struct expression *, | |
246 | int *, LONGEST *, int *, | |
247 | int, LONGEST, LONGEST); | |
248 | ||
249 | static void aggregate_assign_positional (struct value *, struct value *, | |
250 | struct expression *, | |
251 | int *, LONGEST *, int *, int, | |
252 | LONGEST, LONGEST); | |
253 | ||
254 | ||
255 | static void aggregate_assign_others (struct value *, struct value *, | |
256 | struct expression *, | |
257 | int *, LONGEST *, int, LONGEST, LONGEST); | |
258 | ||
259 | ||
260 | static void add_component_interval (LONGEST, LONGEST, LONGEST *, int *, int); | |
261 | ||
262 | ||
263 | static struct value *ada_evaluate_subexp (struct type *, struct expression *, | |
264 | int *, enum noside); | |
265 | ||
266 | static void ada_forward_operator_length (struct expression *, int, int *, | |
267 | int *); | |
4c4b4cd2 PH |
268 | \f |
269 | ||
76a01679 | 270 | |
4c4b4cd2 | 271 | /* Maximum-sized dynamic type. */ |
14f9c5c9 AS |
272 | static unsigned int varsize_limit; |
273 | ||
4c4b4cd2 PH |
274 | /* FIXME: brobecker/2003-09-17: No longer a const because it is |
275 | returned by a function that does not return a const char *. */ | |
276 | static char *ada_completer_word_break_characters = | |
277 | #ifdef VMS | |
278 | " \t\n!@#%^&*()+=|~`}{[]\";:?/,-"; | |
279 | #else | |
14f9c5c9 | 280 | " \t\n!@#$%^&*()+=|~`}{[]\";:?/,-"; |
4c4b4cd2 | 281 | #endif |
14f9c5c9 | 282 | |
4c4b4cd2 | 283 | /* The name of the symbol to use to get the name of the main subprogram. */ |
76a01679 | 284 | static const char ADA_MAIN_PROGRAM_SYMBOL_NAME[] |
4c4b4cd2 | 285 | = "__gnat_ada_main_program_name"; |
14f9c5c9 | 286 | |
4c4b4cd2 PH |
287 | /* Limit on the number of warnings to raise per expression evaluation. */ |
288 | static int warning_limit = 2; | |
289 | ||
290 | /* Number of warning messages issued; reset to 0 by cleanups after | |
291 | expression evaluation. */ | |
292 | static int warnings_issued = 0; | |
293 | ||
294 | static const char *known_runtime_file_name_patterns[] = { | |
295 | ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS NULL | |
296 | }; | |
297 | ||
298 | static const char *known_auxiliary_function_name_patterns[] = { | |
299 | ADA_KNOWN_AUXILIARY_FUNCTION_NAME_PATTERNS NULL | |
300 | }; | |
301 | ||
302 | /* Space for allocating results of ada_lookup_symbol_list. */ | |
303 | static struct obstack symbol_list_obstack; | |
304 | ||
305 | /* Utilities */ | |
306 | ||
41d27058 JB |
307 | /* Given DECODED_NAME a string holding a symbol name in its |
308 | decoded form (ie using the Ada dotted notation), returns | |
309 | its unqualified name. */ | |
310 | ||
311 | static const char * | |
312 | ada_unqualified_name (const char *decoded_name) | |
313 | { | |
314 | const char *result = strrchr (decoded_name, '.'); | |
315 | ||
316 | if (result != NULL) | |
317 | result++; /* Skip the dot... */ | |
318 | else | |
319 | result = decoded_name; | |
320 | ||
321 | return result; | |
322 | } | |
323 | ||
324 | /* Return a string starting with '<', followed by STR, and '>'. | |
325 | The result is good until the next call. */ | |
326 | ||
327 | static char * | |
328 | add_angle_brackets (const char *str) | |
329 | { | |
330 | static char *result = NULL; | |
331 | ||
332 | xfree (result); | |
88c15c34 | 333 | result = xstrprintf ("<%s>", str); |
41d27058 JB |
334 | return result; |
335 | } | |
96d887e8 | 336 | |
4c4b4cd2 PH |
337 | static char * |
338 | ada_get_gdb_completer_word_break_characters (void) | |
339 | { | |
340 | return ada_completer_word_break_characters; | |
341 | } | |
342 | ||
e79af960 JB |
343 | /* Print an array element index using the Ada syntax. */ |
344 | ||
345 | static void | |
346 | ada_print_array_index (struct value *index_value, struct ui_file *stream, | |
79a45b7d | 347 | const struct value_print_options *options) |
e79af960 | 348 | { |
79a45b7d | 349 | LA_VALUE_PRINT (index_value, stream, options); |
e79af960 JB |
350 | fprintf_filtered (stream, " => "); |
351 | } | |
352 | ||
4c4b4cd2 PH |
353 | /* Read the string located at ADDR from the inferior and store the |
354 | result into BUF. */ | |
355 | ||
356 | static void | |
14f9c5c9 AS |
357 | extract_string (CORE_ADDR addr, char *buf) |
358 | { | |
d2e4a39e | 359 | int char_index = 0; |
14f9c5c9 | 360 | |
4c4b4cd2 PH |
361 | /* Loop, reading one byte at a time, until we reach the '\000' |
362 | end-of-string marker. */ | |
d2e4a39e AS |
363 | do |
364 | { | |
365 | target_read_memory (addr + char_index * sizeof (char), | |
4c4b4cd2 | 366 | buf + char_index * sizeof (char), sizeof (char)); |
d2e4a39e AS |
367 | char_index++; |
368 | } | |
369 | while (buf[char_index - 1] != '\000'); | |
14f9c5c9 AS |
370 | } |
371 | ||
f27cf670 | 372 | /* Assuming VECT points to an array of *SIZE objects of size |
14f9c5c9 | 373 | ELEMENT_SIZE, grow it to contain at least MIN_SIZE objects, |
f27cf670 | 374 | updating *SIZE as necessary and returning the (new) array. */ |
14f9c5c9 | 375 | |
f27cf670 AS |
376 | void * |
377 | grow_vect (void *vect, size_t *size, size_t min_size, int element_size) | |
14f9c5c9 | 378 | { |
d2e4a39e AS |
379 | if (*size < min_size) |
380 | { | |
381 | *size *= 2; | |
382 | if (*size < min_size) | |
4c4b4cd2 | 383 | *size = min_size; |
f27cf670 | 384 | vect = xrealloc (vect, *size * element_size); |
d2e4a39e | 385 | } |
f27cf670 | 386 | return vect; |
14f9c5c9 AS |
387 | } |
388 | ||
389 | /* True (non-zero) iff TARGET matches FIELD_NAME up to any trailing | |
4c4b4cd2 | 390 | suffix of FIELD_NAME beginning "___". */ |
14f9c5c9 AS |
391 | |
392 | static int | |
ebf56fd3 | 393 | field_name_match (const char *field_name, const char *target) |
14f9c5c9 AS |
394 | { |
395 | int len = strlen (target); | |
d2e4a39e | 396 | return |
4c4b4cd2 PH |
397 | (strncmp (field_name, target, len) == 0 |
398 | && (field_name[len] == '\0' | |
399 | || (strncmp (field_name + len, "___", 3) == 0 | |
76a01679 JB |
400 | && strcmp (field_name + strlen (field_name) - 6, |
401 | "___XVN") != 0))); | |
14f9c5c9 AS |
402 | } |
403 | ||
404 | ||
872c8b51 JB |
405 | /* Assuming TYPE is a TYPE_CODE_STRUCT or a TYPE_CODE_TYPDEF to |
406 | a TYPE_CODE_STRUCT, find the field whose name matches FIELD_NAME, | |
407 | and return its index. This function also handles fields whose name | |
408 | have ___ suffixes because the compiler sometimes alters their name | |
409 | by adding such a suffix to represent fields with certain constraints. | |
410 | If the field could not be found, return a negative number if | |
411 | MAYBE_MISSING is set. Otherwise raise an error. */ | |
4c4b4cd2 PH |
412 | |
413 | int | |
414 | ada_get_field_index (const struct type *type, const char *field_name, | |
415 | int maybe_missing) | |
416 | { | |
417 | int fieldno; | |
872c8b51 JB |
418 | struct type *struct_type = check_typedef ((struct type *) type); |
419 | ||
420 | for (fieldno = 0; fieldno < TYPE_NFIELDS (struct_type); fieldno++) | |
421 | if (field_name_match (TYPE_FIELD_NAME (struct_type, fieldno), field_name)) | |
4c4b4cd2 PH |
422 | return fieldno; |
423 | ||
424 | if (!maybe_missing) | |
323e0a4a | 425 | error (_("Unable to find field %s in struct %s. Aborting"), |
872c8b51 | 426 | field_name, TYPE_NAME (struct_type)); |
4c4b4cd2 PH |
427 | |
428 | return -1; | |
429 | } | |
430 | ||
431 | /* The length of the prefix of NAME prior to any "___" suffix. */ | |
14f9c5c9 AS |
432 | |
433 | int | |
d2e4a39e | 434 | ada_name_prefix_len (const char *name) |
14f9c5c9 AS |
435 | { |
436 | if (name == NULL) | |
437 | return 0; | |
d2e4a39e | 438 | else |
14f9c5c9 | 439 | { |
d2e4a39e | 440 | const char *p = strstr (name, "___"); |
14f9c5c9 | 441 | if (p == NULL) |
4c4b4cd2 | 442 | return strlen (name); |
14f9c5c9 | 443 | else |
4c4b4cd2 | 444 | return p - name; |
14f9c5c9 AS |
445 | } |
446 | } | |
447 | ||
4c4b4cd2 PH |
448 | /* Return non-zero if SUFFIX is a suffix of STR. |
449 | Return zero if STR is null. */ | |
450 | ||
14f9c5c9 | 451 | static int |
d2e4a39e | 452 | is_suffix (const char *str, const char *suffix) |
14f9c5c9 AS |
453 | { |
454 | int len1, len2; | |
455 | if (str == NULL) | |
456 | return 0; | |
457 | len1 = strlen (str); | |
458 | len2 = strlen (suffix); | |
4c4b4cd2 | 459 | return (len1 >= len2 && strcmp (str + len1 - len2, suffix) == 0); |
14f9c5c9 AS |
460 | } |
461 | ||
4c4b4cd2 PH |
462 | /* The contents of value VAL, treated as a value of type TYPE. The |
463 | result is an lval in memory if VAL is. */ | |
14f9c5c9 | 464 | |
d2e4a39e | 465 | static struct value * |
4c4b4cd2 | 466 | coerce_unspec_val_to_type (struct value *val, struct type *type) |
14f9c5c9 | 467 | { |
61ee279c | 468 | type = ada_check_typedef (type); |
df407dfe | 469 | if (value_type (val) == type) |
4c4b4cd2 | 470 | return val; |
d2e4a39e | 471 | else |
14f9c5c9 | 472 | { |
4c4b4cd2 PH |
473 | struct value *result; |
474 | ||
475 | /* Make sure that the object size is not unreasonable before | |
476 | trying to allocate some memory for it. */ | |
714e53ab | 477 | check_size (type); |
4c4b4cd2 PH |
478 | |
479 | result = allocate_value (type); | |
74bcbdf3 | 480 | set_value_component_location (result, val); |
9bbda503 AC |
481 | set_value_bitsize (result, value_bitsize (val)); |
482 | set_value_bitpos (result, value_bitpos (val)); | |
42ae5230 | 483 | set_value_address (result, value_address (val)); |
d69fe07e | 484 | if (value_lazy (val) |
df407dfe | 485 | || TYPE_LENGTH (type) > TYPE_LENGTH (value_type (val))) |
dfa52d88 | 486 | set_value_lazy (result, 1); |
d2e4a39e | 487 | else |
0fd88904 | 488 | memcpy (value_contents_raw (result), value_contents (val), |
4c4b4cd2 | 489 | TYPE_LENGTH (type)); |
14f9c5c9 AS |
490 | return result; |
491 | } | |
492 | } | |
493 | ||
fc1a4b47 AC |
494 | static const gdb_byte * |
495 | cond_offset_host (const gdb_byte *valaddr, long offset) | |
14f9c5c9 AS |
496 | { |
497 | if (valaddr == NULL) | |
498 | return NULL; | |
499 | else | |
500 | return valaddr + offset; | |
501 | } | |
502 | ||
503 | static CORE_ADDR | |
ebf56fd3 | 504 | cond_offset_target (CORE_ADDR address, long offset) |
14f9c5c9 AS |
505 | { |
506 | if (address == 0) | |
507 | return 0; | |
d2e4a39e | 508 | else |
14f9c5c9 AS |
509 | return address + offset; |
510 | } | |
511 | ||
4c4b4cd2 PH |
512 | /* Issue a warning (as for the definition of warning in utils.c, but |
513 | with exactly one argument rather than ...), unless the limit on the | |
514 | number of warnings has passed during the evaluation of the current | |
515 | expression. */ | |
a2249542 | 516 | |
77109804 AC |
517 | /* FIXME: cagney/2004-10-10: This function is mimicking the behavior |
518 | provided by "complaint". */ | |
519 | static void lim_warning (const char *format, ...) ATTR_FORMAT (printf, 1, 2); | |
520 | ||
14f9c5c9 | 521 | static void |
a2249542 | 522 | lim_warning (const char *format, ...) |
14f9c5c9 | 523 | { |
a2249542 MK |
524 | va_list args; |
525 | va_start (args, format); | |
526 | ||
4c4b4cd2 PH |
527 | warnings_issued += 1; |
528 | if (warnings_issued <= warning_limit) | |
a2249542 MK |
529 | vwarning (format, args); |
530 | ||
531 | va_end (args); | |
4c4b4cd2 PH |
532 | } |
533 | ||
714e53ab PH |
534 | /* Issue an error if the size of an object of type T is unreasonable, |
535 | i.e. if it would be a bad idea to allocate a value of this type in | |
536 | GDB. */ | |
537 | ||
538 | static void | |
539 | check_size (const struct type *type) | |
540 | { | |
541 | if (TYPE_LENGTH (type) > varsize_limit) | |
323e0a4a | 542 | error (_("object size is larger than varsize-limit")); |
714e53ab PH |
543 | } |
544 | ||
545 | ||
c3e5cd34 PH |
546 | /* Note: would have used MAX_OF_TYPE and MIN_OF_TYPE macros from |
547 | gdbtypes.h, but some of the necessary definitions in that file | |
548 | seem to have gone missing. */ | |
549 | ||
550 | /* Maximum value of a SIZE-byte signed integer type. */ | |
4c4b4cd2 | 551 | static LONGEST |
c3e5cd34 | 552 | max_of_size (int size) |
4c4b4cd2 | 553 | { |
76a01679 JB |
554 | LONGEST top_bit = (LONGEST) 1 << (size * 8 - 2); |
555 | return top_bit | (top_bit - 1); | |
4c4b4cd2 PH |
556 | } |
557 | ||
c3e5cd34 | 558 | /* Minimum value of a SIZE-byte signed integer type. */ |
4c4b4cd2 | 559 | static LONGEST |
c3e5cd34 | 560 | min_of_size (int size) |
4c4b4cd2 | 561 | { |
c3e5cd34 | 562 | return -max_of_size (size) - 1; |
4c4b4cd2 PH |
563 | } |
564 | ||
c3e5cd34 | 565 | /* Maximum value of a SIZE-byte unsigned integer type. */ |
4c4b4cd2 | 566 | static ULONGEST |
c3e5cd34 | 567 | umax_of_size (int size) |
4c4b4cd2 | 568 | { |
76a01679 JB |
569 | ULONGEST top_bit = (ULONGEST) 1 << (size * 8 - 1); |
570 | return top_bit | (top_bit - 1); | |
4c4b4cd2 PH |
571 | } |
572 | ||
c3e5cd34 PH |
573 | /* Maximum value of integral type T, as a signed quantity. */ |
574 | static LONGEST | |
575 | max_of_type (struct type *t) | |
4c4b4cd2 | 576 | { |
c3e5cd34 PH |
577 | if (TYPE_UNSIGNED (t)) |
578 | return (LONGEST) umax_of_size (TYPE_LENGTH (t)); | |
579 | else | |
580 | return max_of_size (TYPE_LENGTH (t)); | |
581 | } | |
582 | ||
583 | /* Minimum value of integral type T, as a signed quantity. */ | |
584 | static LONGEST | |
585 | min_of_type (struct type *t) | |
586 | { | |
587 | if (TYPE_UNSIGNED (t)) | |
588 | return 0; | |
589 | else | |
590 | return min_of_size (TYPE_LENGTH (t)); | |
4c4b4cd2 PH |
591 | } |
592 | ||
593 | /* The largest value in the domain of TYPE, a discrete type, as an integer. */ | |
690cc4eb | 594 | static LONGEST |
4c4b4cd2 PH |
595 | discrete_type_high_bound (struct type *type) |
596 | { | |
76a01679 | 597 | switch (TYPE_CODE (type)) |
4c4b4cd2 PH |
598 | { |
599 | case TYPE_CODE_RANGE: | |
690cc4eb | 600 | return TYPE_HIGH_BOUND (type); |
4c4b4cd2 | 601 | case TYPE_CODE_ENUM: |
690cc4eb PH |
602 | return TYPE_FIELD_BITPOS (type, TYPE_NFIELDS (type) - 1); |
603 | case TYPE_CODE_BOOL: | |
604 | return 1; | |
605 | case TYPE_CODE_CHAR: | |
76a01679 | 606 | case TYPE_CODE_INT: |
690cc4eb | 607 | return max_of_type (type); |
4c4b4cd2 | 608 | default: |
323e0a4a | 609 | error (_("Unexpected type in discrete_type_high_bound.")); |
4c4b4cd2 PH |
610 | } |
611 | } | |
612 | ||
613 | /* The largest value in the domain of TYPE, a discrete type, as an integer. */ | |
690cc4eb | 614 | static LONGEST |
4c4b4cd2 PH |
615 | discrete_type_low_bound (struct type *type) |
616 | { | |
76a01679 | 617 | switch (TYPE_CODE (type)) |
4c4b4cd2 PH |
618 | { |
619 | case TYPE_CODE_RANGE: | |
690cc4eb | 620 | return TYPE_LOW_BOUND (type); |
4c4b4cd2 | 621 | case TYPE_CODE_ENUM: |
690cc4eb PH |
622 | return TYPE_FIELD_BITPOS (type, 0); |
623 | case TYPE_CODE_BOOL: | |
624 | return 0; | |
625 | case TYPE_CODE_CHAR: | |
76a01679 | 626 | case TYPE_CODE_INT: |
690cc4eb | 627 | return min_of_type (type); |
4c4b4cd2 | 628 | default: |
323e0a4a | 629 | error (_("Unexpected type in discrete_type_low_bound.")); |
4c4b4cd2 PH |
630 | } |
631 | } | |
632 | ||
633 | /* The identity on non-range types. For range types, the underlying | |
76a01679 | 634 | non-range scalar type. */ |
4c4b4cd2 PH |
635 | |
636 | static struct type * | |
637 | base_type (struct type *type) | |
638 | { | |
639 | while (type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE) | |
640 | { | |
76a01679 JB |
641 | if (type == TYPE_TARGET_TYPE (type) || TYPE_TARGET_TYPE (type) == NULL) |
642 | return type; | |
4c4b4cd2 PH |
643 | type = TYPE_TARGET_TYPE (type); |
644 | } | |
645 | return type; | |
14f9c5c9 | 646 | } |
4c4b4cd2 | 647 | \f |
76a01679 | 648 | |
4c4b4cd2 | 649 | /* Language Selection */ |
14f9c5c9 AS |
650 | |
651 | /* If the main program is in Ada, return language_ada, otherwise return LANG | |
652 | (the main program is in Ada iif the adainit symbol is found). | |
653 | ||
4c4b4cd2 | 654 | MAIN_PST is not used. */ |
d2e4a39e | 655 | |
14f9c5c9 | 656 | enum language |
d2e4a39e | 657 | ada_update_initial_language (enum language lang, |
4c4b4cd2 | 658 | struct partial_symtab *main_pst) |
14f9c5c9 | 659 | { |
d2e4a39e | 660 | if (lookup_minimal_symbol ("adainit", (const char *) NULL, |
4c4b4cd2 PH |
661 | (struct objfile *) NULL) != NULL) |
662 | return language_ada; | |
14f9c5c9 AS |
663 | |
664 | return lang; | |
665 | } | |
96d887e8 PH |
666 | |
667 | /* If the main procedure is written in Ada, then return its name. | |
668 | The result is good until the next call. Return NULL if the main | |
669 | procedure doesn't appear to be in Ada. */ | |
670 | ||
671 | char * | |
672 | ada_main_name (void) | |
673 | { | |
674 | struct minimal_symbol *msym; | |
f9bc20b9 | 675 | static char *main_program_name = NULL; |
6c038f32 | 676 | |
96d887e8 PH |
677 | /* For Ada, the name of the main procedure is stored in a specific |
678 | string constant, generated by the binder. Look for that symbol, | |
679 | extract its address, and then read that string. If we didn't find | |
680 | that string, then most probably the main procedure is not written | |
681 | in Ada. */ | |
682 | msym = lookup_minimal_symbol (ADA_MAIN_PROGRAM_SYMBOL_NAME, NULL, NULL); | |
683 | ||
684 | if (msym != NULL) | |
685 | { | |
f9bc20b9 JB |
686 | CORE_ADDR main_program_name_addr; |
687 | int err_code; | |
688 | ||
96d887e8 PH |
689 | main_program_name_addr = SYMBOL_VALUE_ADDRESS (msym); |
690 | if (main_program_name_addr == 0) | |
323e0a4a | 691 | error (_("Invalid address for Ada main program name.")); |
96d887e8 | 692 | |
f9bc20b9 JB |
693 | xfree (main_program_name); |
694 | target_read_string (main_program_name_addr, &main_program_name, | |
695 | 1024, &err_code); | |
696 | ||
697 | if (err_code != 0) | |
698 | return NULL; | |
96d887e8 PH |
699 | return main_program_name; |
700 | } | |
701 | ||
702 | /* The main procedure doesn't seem to be in Ada. */ | |
703 | return NULL; | |
704 | } | |
14f9c5c9 | 705 | \f |
4c4b4cd2 | 706 | /* Symbols */ |
d2e4a39e | 707 | |
4c4b4cd2 PH |
708 | /* Table of Ada operators and their GNAT-encoded names. Last entry is pair |
709 | of NULLs. */ | |
14f9c5c9 | 710 | |
d2e4a39e AS |
711 | const struct ada_opname_map ada_opname_table[] = { |
712 | {"Oadd", "\"+\"", BINOP_ADD}, | |
713 | {"Osubtract", "\"-\"", BINOP_SUB}, | |
714 | {"Omultiply", "\"*\"", BINOP_MUL}, | |
715 | {"Odivide", "\"/\"", BINOP_DIV}, | |
716 | {"Omod", "\"mod\"", BINOP_MOD}, | |
717 | {"Orem", "\"rem\"", BINOP_REM}, | |
718 | {"Oexpon", "\"**\"", BINOP_EXP}, | |
719 | {"Olt", "\"<\"", BINOP_LESS}, | |
720 | {"Ole", "\"<=\"", BINOP_LEQ}, | |
721 | {"Ogt", "\">\"", BINOP_GTR}, | |
722 | {"Oge", "\">=\"", BINOP_GEQ}, | |
723 | {"Oeq", "\"=\"", BINOP_EQUAL}, | |
724 | {"One", "\"/=\"", BINOP_NOTEQUAL}, | |
725 | {"Oand", "\"and\"", BINOP_BITWISE_AND}, | |
726 | {"Oor", "\"or\"", BINOP_BITWISE_IOR}, | |
727 | {"Oxor", "\"xor\"", BINOP_BITWISE_XOR}, | |
728 | {"Oconcat", "\"&\"", BINOP_CONCAT}, | |
729 | {"Oabs", "\"abs\"", UNOP_ABS}, | |
730 | {"Onot", "\"not\"", UNOP_LOGICAL_NOT}, | |
731 | {"Oadd", "\"+\"", UNOP_PLUS}, | |
732 | {"Osubtract", "\"-\"", UNOP_NEG}, | |
733 | {NULL, NULL} | |
14f9c5c9 AS |
734 | }; |
735 | ||
4c4b4cd2 PH |
736 | /* The "encoded" form of DECODED, according to GNAT conventions. |
737 | The result is valid until the next call to ada_encode. */ | |
738 | ||
14f9c5c9 | 739 | char * |
4c4b4cd2 | 740 | ada_encode (const char *decoded) |
14f9c5c9 | 741 | { |
4c4b4cd2 PH |
742 | static char *encoding_buffer = NULL; |
743 | static size_t encoding_buffer_size = 0; | |
d2e4a39e | 744 | const char *p; |
14f9c5c9 | 745 | int k; |
d2e4a39e | 746 | |
4c4b4cd2 | 747 | if (decoded == NULL) |
14f9c5c9 AS |
748 | return NULL; |
749 | ||
4c4b4cd2 PH |
750 | GROW_VECT (encoding_buffer, encoding_buffer_size, |
751 | 2 * strlen (decoded) + 10); | |
14f9c5c9 AS |
752 | |
753 | k = 0; | |
4c4b4cd2 | 754 | for (p = decoded; *p != '\0'; p += 1) |
14f9c5c9 | 755 | { |
cdc7bb92 | 756 | if (*p == '.') |
4c4b4cd2 PH |
757 | { |
758 | encoding_buffer[k] = encoding_buffer[k + 1] = '_'; | |
759 | k += 2; | |
760 | } | |
14f9c5c9 | 761 | else if (*p == '"') |
4c4b4cd2 PH |
762 | { |
763 | const struct ada_opname_map *mapping; | |
764 | ||
765 | for (mapping = ada_opname_table; | |
1265e4aa JB |
766 | mapping->encoded != NULL |
767 | && strncmp (mapping->decoded, p, | |
768 | strlen (mapping->decoded)) != 0; mapping += 1) | |
4c4b4cd2 PH |
769 | ; |
770 | if (mapping->encoded == NULL) | |
323e0a4a | 771 | error (_("invalid Ada operator name: %s"), p); |
4c4b4cd2 PH |
772 | strcpy (encoding_buffer + k, mapping->encoded); |
773 | k += strlen (mapping->encoded); | |
774 | break; | |
775 | } | |
d2e4a39e | 776 | else |
4c4b4cd2 PH |
777 | { |
778 | encoding_buffer[k] = *p; | |
779 | k += 1; | |
780 | } | |
14f9c5c9 AS |
781 | } |
782 | ||
4c4b4cd2 PH |
783 | encoding_buffer[k] = '\0'; |
784 | return encoding_buffer; | |
14f9c5c9 AS |
785 | } |
786 | ||
787 | /* Return NAME folded to lower case, or, if surrounded by single | |
4c4b4cd2 PH |
788 | quotes, unfolded, but with the quotes stripped away. Result good |
789 | to next call. */ | |
790 | ||
d2e4a39e AS |
791 | char * |
792 | ada_fold_name (const char *name) | |
14f9c5c9 | 793 | { |
d2e4a39e | 794 | static char *fold_buffer = NULL; |
14f9c5c9 AS |
795 | static size_t fold_buffer_size = 0; |
796 | ||
797 | int len = strlen (name); | |
d2e4a39e | 798 | GROW_VECT (fold_buffer, fold_buffer_size, len + 1); |
14f9c5c9 AS |
799 | |
800 | if (name[0] == '\'') | |
801 | { | |
d2e4a39e AS |
802 | strncpy (fold_buffer, name + 1, len - 2); |
803 | fold_buffer[len - 2] = '\000'; | |
14f9c5c9 AS |
804 | } |
805 | else | |
806 | { | |
807 | int i; | |
808 | for (i = 0; i <= len; i += 1) | |
4c4b4cd2 | 809 | fold_buffer[i] = tolower (name[i]); |
14f9c5c9 AS |
810 | } |
811 | ||
812 | return fold_buffer; | |
813 | } | |
814 | ||
529cad9c PH |
815 | /* Return nonzero if C is either a digit or a lowercase alphabet character. */ |
816 | ||
817 | static int | |
818 | is_lower_alphanum (const char c) | |
819 | { | |
820 | return (isdigit (c) || (isalpha (c) && islower (c))); | |
821 | } | |
822 | ||
29480c32 JB |
823 | /* Remove either of these suffixes: |
824 | . .{DIGIT}+ | |
825 | . ${DIGIT}+ | |
826 | . ___{DIGIT}+ | |
827 | . __{DIGIT}+. | |
828 | These are suffixes introduced by the compiler for entities such as | |
829 | nested subprogram for instance, in order to avoid name clashes. | |
830 | They do not serve any purpose for the debugger. */ | |
831 | ||
832 | static void | |
833 | ada_remove_trailing_digits (const char *encoded, int *len) | |
834 | { | |
835 | if (*len > 1 && isdigit (encoded[*len - 1])) | |
836 | { | |
837 | int i = *len - 2; | |
838 | while (i > 0 && isdigit (encoded[i])) | |
839 | i--; | |
840 | if (i >= 0 && encoded[i] == '.') | |
841 | *len = i; | |
842 | else if (i >= 0 && encoded[i] == '$') | |
843 | *len = i; | |
844 | else if (i >= 2 && strncmp (encoded + i - 2, "___", 3) == 0) | |
845 | *len = i - 2; | |
846 | else if (i >= 1 && strncmp (encoded + i - 1, "__", 2) == 0) | |
847 | *len = i - 1; | |
848 | } | |
849 | } | |
850 | ||
851 | /* Remove the suffix introduced by the compiler for protected object | |
852 | subprograms. */ | |
853 | ||
854 | static void | |
855 | ada_remove_po_subprogram_suffix (const char *encoded, int *len) | |
856 | { | |
857 | /* Remove trailing N. */ | |
858 | ||
859 | /* Protected entry subprograms are broken into two | |
860 | separate subprograms: The first one is unprotected, and has | |
861 | a 'N' suffix; the second is the protected version, and has | |
862 | the 'P' suffix. The second calls the first one after handling | |
863 | the protection. Since the P subprograms are internally generated, | |
864 | we leave these names undecoded, giving the user a clue that this | |
865 | entity is internal. */ | |
866 | ||
867 | if (*len > 1 | |
868 | && encoded[*len - 1] == 'N' | |
869 | && (isdigit (encoded[*len - 2]) || islower (encoded[*len - 2]))) | |
870 | *len = *len - 1; | |
871 | } | |
872 | ||
69fadcdf JB |
873 | /* Remove trailing X[bn]* suffixes (indicating names in package bodies). */ |
874 | ||
875 | static void | |
876 | ada_remove_Xbn_suffix (const char *encoded, int *len) | |
877 | { | |
878 | int i = *len - 1; | |
879 | ||
880 | while (i > 0 && (encoded[i] == 'b' || encoded[i] == 'n')) | |
881 | i--; | |
882 | ||
883 | if (encoded[i] != 'X') | |
884 | return; | |
885 | ||
886 | if (i == 0) | |
887 | return; | |
888 | ||
889 | if (isalnum (encoded[i-1])) | |
890 | *len = i; | |
891 | } | |
892 | ||
29480c32 JB |
893 | /* If ENCODED follows the GNAT entity encoding conventions, then return |
894 | the decoded form of ENCODED. Otherwise, return "<%s>" where "%s" is | |
895 | replaced by ENCODED. | |
14f9c5c9 | 896 | |
4c4b4cd2 | 897 | The resulting string is valid until the next call of ada_decode. |
29480c32 | 898 | If the string is unchanged by decoding, the original string pointer |
4c4b4cd2 PH |
899 | is returned. */ |
900 | ||
901 | const char * | |
902 | ada_decode (const char *encoded) | |
14f9c5c9 AS |
903 | { |
904 | int i, j; | |
905 | int len0; | |
d2e4a39e | 906 | const char *p; |
4c4b4cd2 | 907 | char *decoded; |
14f9c5c9 | 908 | int at_start_name; |
4c4b4cd2 PH |
909 | static char *decoding_buffer = NULL; |
910 | static size_t decoding_buffer_size = 0; | |
d2e4a39e | 911 | |
29480c32 JB |
912 | /* The name of the Ada main procedure starts with "_ada_". |
913 | This prefix is not part of the decoded name, so skip this part | |
914 | if we see this prefix. */ | |
4c4b4cd2 PH |
915 | if (strncmp (encoded, "_ada_", 5) == 0) |
916 | encoded += 5; | |
14f9c5c9 | 917 | |
29480c32 JB |
918 | /* If the name starts with '_', then it is not a properly encoded |
919 | name, so do not attempt to decode it. Similarly, if the name | |
920 | starts with '<', the name should not be decoded. */ | |
4c4b4cd2 | 921 | if (encoded[0] == '_' || encoded[0] == '<') |
14f9c5c9 AS |
922 | goto Suppress; |
923 | ||
4c4b4cd2 | 924 | len0 = strlen (encoded); |
4c4b4cd2 | 925 | |
29480c32 JB |
926 | ada_remove_trailing_digits (encoded, &len0); |
927 | ada_remove_po_subprogram_suffix (encoded, &len0); | |
529cad9c | 928 | |
4c4b4cd2 PH |
929 | /* Remove the ___X.* suffix if present. Do not forget to verify that |
930 | the suffix is located before the current "end" of ENCODED. We want | |
931 | to avoid re-matching parts of ENCODED that have previously been | |
932 | marked as discarded (by decrementing LEN0). */ | |
933 | p = strstr (encoded, "___"); | |
934 | if (p != NULL && p - encoded < len0 - 3) | |
14f9c5c9 AS |
935 | { |
936 | if (p[3] == 'X') | |
4c4b4cd2 | 937 | len0 = p - encoded; |
14f9c5c9 | 938 | else |
4c4b4cd2 | 939 | goto Suppress; |
14f9c5c9 | 940 | } |
4c4b4cd2 | 941 | |
29480c32 JB |
942 | /* Remove any trailing TKB suffix. It tells us that this symbol |
943 | is for the body of a task, but that information does not actually | |
944 | appear in the decoded name. */ | |
945 | ||
4c4b4cd2 | 946 | if (len0 > 3 && strncmp (encoded + len0 - 3, "TKB", 3) == 0) |
14f9c5c9 | 947 | len0 -= 3; |
76a01679 | 948 | |
a10967fa JB |
949 | /* Remove any trailing TB suffix. The TB suffix is slightly different |
950 | from the TKB suffix because it is used for non-anonymous task | |
951 | bodies. */ | |
952 | ||
953 | if (len0 > 2 && strncmp (encoded + len0 - 2, "TB", 2) == 0) | |
954 | len0 -= 2; | |
955 | ||
29480c32 JB |
956 | /* Remove trailing "B" suffixes. */ |
957 | /* FIXME: brobecker/2006-04-19: Not sure what this are used for... */ | |
958 | ||
4c4b4cd2 | 959 | if (len0 > 1 && strncmp (encoded + len0 - 1, "B", 1) == 0) |
14f9c5c9 AS |
960 | len0 -= 1; |
961 | ||
4c4b4cd2 | 962 | /* Make decoded big enough for possible expansion by operator name. */ |
29480c32 | 963 | |
4c4b4cd2 PH |
964 | GROW_VECT (decoding_buffer, decoding_buffer_size, 2 * len0 + 1); |
965 | decoded = decoding_buffer; | |
14f9c5c9 | 966 | |
29480c32 JB |
967 | /* Remove trailing __{digit}+ or trailing ${digit}+. */ |
968 | ||
4c4b4cd2 | 969 | if (len0 > 1 && isdigit (encoded[len0 - 1])) |
d2e4a39e | 970 | { |
4c4b4cd2 PH |
971 | i = len0 - 2; |
972 | while ((i >= 0 && isdigit (encoded[i])) | |
973 | || (i >= 1 && encoded[i] == '_' && isdigit (encoded[i - 1]))) | |
974 | i -= 1; | |
975 | if (i > 1 && encoded[i] == '_' && encoded[i - 1] == '_') | |
976 | len0 = i - 1; | |
977 | else if (encoded[i] == '$') | |
978 | len0 = i; | |
d2e4a39e | 979 | } |
14f9c5c9 | 980 | |
29480c32 JB |
981 | /* The first few characters that are not alphabetic are not part |
982 | of any encoding we use, so we can copy them over verbatim. */ | |
983 | ||
4c4b4cd2 PH |
984 | for (i = 0, j = 0; i < len0 && !isalpha (encoded[i]); i += 1, j += 1) |
985 | decoded[j] = encoded[i]; | |
14f9c5c9 AS |
986 | |
987 | at_start_name = 1; | |
988 | while (i < len0) | |
989 | { | |
29480c32 | 990 | /* Is this a symbol function? */ |
4c4b4cd2 PH |
991 | if (at_start_name && encoded[i] == 'O') |
992 | { | |
993 | int k; | |
994 | for (k = 0; ada_opname_table[k].encoded != NULL; k += 1) | |
995 | { | |
996 | int op_len = strlen (ada_opname_table[k].encoded); | |
06d5cf63 JB |
997 | if ((strncmp (ada_opname_table[k].encoded + 1, encoded + i + 1, |
998 | op_len - 1) == 0) | |
999 | && !isalnum (encoded[i + op_len])) | |
4c4b4cd2 PH |
1000 | { |
1001 | strcpy (decoded + j, ada_opname_table[k].decoded); | |
1002 | at_start_name = 0; | |
1003 | i += op_len; | |
1004 | j += strlen (ada_opname_table[k].decoded); | |
1005 | break; | |
1006 | } | |
1007 | } | |
1008 | if (ada_opname_table[k].encoded != NULL) | |
1009 | continue; | |
1010 | } | |
14f9c5c9 AS |
1011 | at_start_name = 0; |
1012 | ||
529cad9c PH |
1013 | /* Replace "TK__" with "__", which will eventually be translated |
1014 | into "." (just below). */ | |
1015 | ||
4c4b4cd2 PH |
1016 | if (i < len0 - 4 && strncmp (encoded + i, "TK__", 4) == 0) |
1017 | i += 2; | |
529cad9c | 1018 | |
29480c32 JB |
1019 | /* Replace "__B_{DIGITS}+__" sequences by "__", which will eventually |
1020 | be translated into "." (just below). These are internal names | |
1021 | generated for anonymous blocks inside which our symbol is nested. */ | |
1022 | ||
1023 | if (len0 - i > 5 && encoded [i] == '_' && encoded [i+1] == '_' | |
1024 | && encoded [i+2] == 'B' && encoded [i+3] == '_' | |
1025 | && isdigit (encoded [i+4])) | |
1026 | { | |
1027 | int k = i + 5; | |
1028 | ||
1029 | while (k < len0 && isdigit (encoded[k])) | |
1030 | k++; /* Skip any extra digit. */ | |
1031 | ||
1032 | /* Double-check that the "__B_{DIGITS}+" sequence we found | |
1033 | is indeed followed by "__". */ | |
1034 | if (len0 - k > 2 && encoded [k] == '_' && encoded [k+1] == '_') | |
1035 | i = k; | |
1036 | } | |
1037 | ||
529cad9c PH |
1038 | /* Remove _E{DIGITS}+[sb] */ |
1039 | ||
1040 | /* Just as for protected object subprograms, there are 2 categories | |
1041 | of subprograms created by the compiler for each entry. The first | |
1042 | one implements the actual entry code, and has a suffix following | |
1043 | the convention above; the second one implements the barrier and | |
1044 | uses the same convention as above, except that the 'E' is replaced | |
1045 | by a 'B'. | |
1046 | ||
1047 | Just as above, we do not decode the name of barrier functions | |
1048 | to give the user a clue that the code he is debugging has been | |
1049 | internally generated. */ | |
1050 | ||
1051 | if (len0 - i > 3 && encoded [i] == '_' && encoded[i+1] == 'E' | |
1052 | && isdigit (encoded[i+2])) | |
1053 | { | |
1054 | int k = i + 3; | |
1055 | ||
1056 | while (k < len0 && isdigit (encoded[k])) | |
1057 | k++; | |
1058 | ||
1059 | if (k < len0 | |
1060 | && (encoded[k] == 'b' || encoded[k] == 's')) | |
1061 | { | |
1062 | k++; | |
1063 | /* Just as an extra precaution, make sure that if this | |
1064 | suffix is followed by anything else, it is a '_'. | |
1065 | Otherwise, we matched this sequence by accident. */ | |
1066 | if (k == len0 | |
1067 | || (k < len0 && encoded[k] == '_')) | |
1068 | i = k; | |
1069 | } | |
1070 | } | |
1071 | ||
1072 | /* Remove trailing "N" in [a-z0-9]+N__. The N is added by | |
1073 | the GNAT front-end in protected object subprograms. */ | |
1074 | ||
1075 | if (i < len0 + 3 | |
1076 | && encoded[i] == 'N' && encoded[i+1] == '_' && encoded[i+2] == '_') | |
1077 | { | |
1078 | /* Backtrack a bit up until we reach either the begining of | |
1079 | the encoded name, or "__". Make sure that we only find | |
1080 | digits or lowercase characters. */ | |
1081 | const char *ptr = encoded + i - 1; | |
1082 | ||
1083 | while (ptr >= encoded && is_lower_alphanum (ptr[0])) | |
1084 | ptr--; | |
1085 | if (ptr < encoded | |
1086 | || (ptr > encoded && ptr[0] == '_' && ptr[-1] == '_')) | |
1087 | i++; | |
1088 | } | |
1089 | ||
4c4b4cd2 PH |
1090 | if (encoded[i] == 'X' && i != 0 && isalnum (encoded[i - 1])) |
1091 | { | |
29480c32 JB |
1092 | /* This is a X[bn]* sequence not separated from the previous |
1093 | part of the name with a non-alpha-numeric character (in other | |
1094 | words, immediately following an alpha-numeric character), then | |
1095 | verify that it is placed at the end of the encoded name. If | |
1096 | not, then the encoding is not valid and we should abort the | |
1097 | decoding. Otherwise, just skip it, it is used in body-nested | |
1098 | package names. */ | |
4c4b4cd2 PH |
1099 | do |
1100 | i += 1; | |
1101 | while (i < len0 && (encoded[i] == 'b' || encoded[i] == 'n')); | |
1102 | if (i < len0) | |
1103 | goto Suppress; | |
1104 | } | |
cdc7bb92 | 1105 | else if (i < len0 - 2 && encoded[i] == '_' && encoded[i + 1] == '_') |
4c4b4cd2 | 1106 | { |
29480c32 | 1107 | /* Replace '__' by '.'. */ |
4c4b4cd2 PH |
1108 | decoded[j] = '.'; |
1109 | at_start_name = 1; | |
1110 | i += 2; | |
1111 | j += 1; | |
1112 | } | |
14f9c5c9 | 1113 | else |
4c4b4cd2 | 1114 | { |
29480c32 JB |
1115 | /* It's a character part of the decoded name, so just copy it |
1116 | over. */ | |
4c4b4cd2 PH |
1117 | decoded[j] = encoded[i]; |
1118 | i += 1; | |
1119 | j += 1; | |
1120 | } | |
14f9c5c9 | 1121 | } |
4c4b4cd2 | 1122 | decoded[j] = '\000'; |
14f9c5c9 | 1123 | |
29480c32 JB |
1124 | /* Decoded names should never contain any uppercase character. |
1125 | Double-check this, and abort the decoding if we find one. */ | |
1126 | ||
4c4b4cd2 PH |
1127 | for (i = 0; decoded[i] != '\0'; i += 1) |
1128 | if (isupper (decoded[i]) || decoded[i] == ' ') | |
14f9c5c9 AS |
1129 | goto Suppress; |
1130 | ||
4c4b4cd2 PH |
1131 | if (strcmp (decoded, encoded) == 0) |
1132 | return encoded; | |
1133 | else | |
1134 | return decoded; | |
14f9c5c9 AS |
1135 | |
1136 | Suppress: | |
4c4b4cd2 PH |
1137 | GROW_VECT (decoding_buffer, decoding_buffer_size, strlen (encoded) + 3); |
1138 | decoded = decoding_buffer; | |
1139 | if (encoded[0] == '<') | |
1140 | strcpy (decoded, encoded); | |
14f9c5c9 | 1141 | else |
88c15c34 | 1142 | xsnprintf (decoded, decoding_buffer_size, "<%s>", encoded); |
4c4b4cd2 PH |
1143 | return decoded; |
1144 | ||
1145 | } | |
1146 | ||
1147 | /* Table for keeping permanent unique copies of decoded names. Once | |
1148 | allocated, names in this table are never released. While this is a | |
1149 | storage leak, it should not be significant unless there are massive | |
1150 | changes in the set of decoded names in successive versions of a | |
1151 | symbol table loaded during a single session. */ | |
1152 | static struct htab *decoded_names_store; | |
1153 | ||
1154 | /* Returns the decoded name of GSYMBOL, as for ada_decode, caching it | |
1155 | in the language-specific part of GSYMBOL, if it has not been | |
1156 | previously computed. Tries to save the decoded name in the same | |
1157 | obstack as GSYMBOL, if possible, and otherwise on the heap (so that, | |
1158 | in any case, the decoded symbol has a lifetime at least that of | |
1159 | GSYMBOL). | |
1160 | The GSYMBOL parameter is "mutable" in the C++ sense: logically | |
1161 | const, but nevertheless modified to a semantically equivalent form | |
1162 | when a decoded name is cached in it. | |
76a01679 | 1163 | */ |
4c4b4cd2 | 1164 | |
76a01679 JB |
1165 | char * |
1166 | ada_decode_symbol (const struct general_symbol_info *gsymbol) | |
4c4b4cd2 | 1167 | { |
76a01679 | 1168 | char **resultp = |
4c4b4cd2 PH |
1169 | (char **) &gsymbol->language_specific.cplus_specific.demangled_name; |
1170 | if (*resultp == NULL) | |
1171 | { | |
1172 | const char *decoded = ada_decode (gsymbol->name); | |
714835d5 | 1173 | if (gsymbol->obj_section != NULL) |
76a01679 | 1174 | { |
714835d5 UW |
1175 | struct objfile *objf = gsymbol->obj_section->objfile; |
1176 | *resultp = obsavestring (decoded, strlen (decoded), | |
1177 | &objf->objfile_obstack); | |
76a01679 | 1178 | } |
4c4b4cd2 | 1179 | /* Sometimes, we can't find a corresponding objfile, in which |
76a01679 JB |
1180 | case, we put the result on the heap. Since we only decode |
1181 | when needed, we hope this usually does not cause a | |
1182 | significant memory leak (FIXME). */ | |
4c4b4cd2 | 1183 | if (*resultp == NULL) |
76a01679 JB |
1184 | { |
1185 | char **slot = (char **) htab_find_slot (decoded_names_store, | |
1186 | decoded, INSERT); | |
1187 | if (*slot == NULL) | |
1188 | *slot = xstrdup (decoded); | |
1189 | *resultp = *slot; | |
1190 | } | |
4c4b4cd2 | 1191 | } |
14f9c5c9 | 1192 | |
4c4b4cd2 PH |
1193 | return *resultp; |
1194 | } | |
76a01679 | 1195 | |
2c0b251b | 1196 | static char * |
76a01679 | 1197 | ada_la_decode (const char *encoded, int options) |
4c4b4cd2 PH |
1198 | { |
1199 | return xstrdup (ada_decode (encoded)); | |
14f9c5c9 AS |
1200 | } |
1201 | ||
1202 | /* Returns non-zero iff SYM_NAME matches NAME, ignoring any trailing | |
4c4b4cd2 PH |
1203 | suffixes that encode debugging information or leading _ada_ on |
1204 | SYM_NAME (see is_name_suffix commentary for the debugging | |
1205 | information that is ignored). If WILD, then NAME need only match a | |
1206 | suffix of SYM_NAME minus the same suffixes. Also returns 0 if | |
1207 | either argument is NULL. */ | |
14f9c5c9 | 1208 | |
2c0b251b | 1209 | static int |
d2e4a39e | 1210 | ada_match_name (const char *sym_name, const char *name, int wild) |
14f9c5c9 AS |
1211 | { |
1212 | if (sym_name == NULL || name == NULL) | |
1213 | return 0; | |
1214 | else if (wild) | |
1215 | return wild_match (name, strlen (name), sym_name); | |
d2e4a39e AS |
1216 | else |
1217 | { | |
1218 | int len_name = strlen (name); | |
4c4b4cd2 PH |
1219 | return (strncmp (sym_name, name, len_name) == 0 |
1220 | && is_name_suffix (sym_name + len_name)) | |
1221 | || (strncmp (sym_name, "_ada_", 5) == 0 | |
1222 | && strncmp (sym_name + 5, name, len_name) == 0 | |
1223 | && is_name_suffix (sym_name + len_name + 5)); | |
d2e4a39e | 1224 | } |
14f9c5c9 | 1225 | } |
14f9c5c9 | 1226 | \f |
d2e4a39e | 1227 | |
4c4b4cd2 | 1228 | /* Arrays */ |
14f9c5c9 | 1229 | |
4c4b4cd2 | 1230 | /* Names of MAX_ADA_DIMENS bounds in P_BOUNDS fields of array descriptors. */ |
14f9c5c9 | 1231 | |
d2e4a39e AS |
1232 | static char *bound_name[] = { |
1233 | "LB0", "UB0", "LB1", "UB1", "LB2", "UB2", "LB3", "UB3", | |
14f9c5c9 AS |
1234 | "LB4", "UB4", "LB5", "UB5", "LB6", "UB6", "LB7", "UB7" |
1235 | }; | |
1236 | ||
1237 | /* Maximum number of array dimensions we are prepared to handle. */ | |
1238 | ||
4c4b4cd2 | 1239 | #define MAX_ADA_DIMENS (sizeof(bound_name) / (2*sizeof(char *))) |
14f9c5c9 | 1240 | |
4c4b4cd2 | 1241 | /* Like modify_field, but allows bitpos > wordlength. */ |
14f9c5c9 AS |
1242 | |
1243 | static void | |
50810684 UW |
1244 | modify_general_field (struct type *type, char *addr, |
1245 | LONGEST fieldval, int bitpos, int bitsize) | |
14f9c5c9 | 1246 | { |
50810684 | 1247 | modify_field (type, addr + bitpos / 8, fieldval, bitpos % 8, bitsize); |
14f9c5c9 AS |
1248 | } |
1249 | ||
1250 | ||
4c4b4cd2 PH |
1251 | /* The desc_* routines return primitive portions of array descriptors |
1252 | (fat pointers). */ | |
14f9c5c9 AS |
1253 | |
1254 | /* The descriptor or array type, if any, indicated by TYPE; removes | |
4c4b4cd2 PH |
1255 | level of indirection, if needed. */ |
1256 | ||
d2e4a39e AS |
1257 | static struct type * |
1258 | desc_base_type (struct type *type) | |
14f9c5c9 AS |
1259 | { |
1260 | if (type == NULL) | |
1261 | return NULL; | |
61ee279c | 1262 | type = ada_check_typedef (type); |
1265e4aa JB |
1263 | if (type != NULL |
1264 | && (TYPE_CODE (type) == TYPE_CODE_PTR | |
1265 | || TYPE_CODE (type) == TYPE_CODE_REF)) | |
61ee279c | 1266 | return ada_check_typedef (TYPE_TARGET_TYPE (type)); |
14f9c5c9 AS |
1267 | else |
1268 | return type; | |
1269 | } | |
1270 | ||
4c4b4cd2 PH |
1271 | /* True iff TYPE indicates a "thin" array pointer type. */ |
1272 | ||
14f9c5c9 | 1273 | static int |
d2e4a39e | 1274 | is_thin_pntr (struct type *type) |
14f9c5c9 | 1275 | { |
d2e4a39e | 1276 | return |
14f9c5c9 AS |
1277 | is_suffix (ada_type_name (desc_base_type (type)), "___XUT") |
1278 | || is_suffix (ada_type_name (desc_base_type (type)), "___XUT___XVE"); | |
1279 | } | |
1280 | ||
4c4b4cd2 PH |
1281 | /* The descriptor type for thin pointer type TYPE. */ |
1282 | ||
d2e4a39e AS |
1283 | static struct type * |
1284 | thin_descriptor_type (struct type *type) | |
14f9c5c9 | 1285 | { |
d2e4a39e | 1286 | struct type *base_type = desc_base_type (type); |
14f9c5c9 AS |
1287 | if (base_type == NULL) |
1288 | return NULL; | |
1289 | if (is_suffix (ada_type_name (base_type), "___XVE")) | |
1290 | return base_type; | |
d2e4a39e | 1291 | else |
14f9c5c9 | 1292 | { |
d2e4a39e | 1293 | struct type *alt_type = ada_find_parallel_type (base_type, "___XVE"); |
14f9c5c9 | 1294 | if (alt_type == NULL) |
4c4b4cd2 | 1295 | return base_type; |
14f9c5c9 | 1296 | else |
4c4b4cd2 | 1297 | return alt_type; |
14f9c5c9 AS |
1298 | } |
1299 | } | |
1300 | ||
4c4b4cd2 PH |
1301 | /* A pointer to the array data for thin-pointer value VAL. */ |
1302 | ||
d2e4a39e AS |
1303 | static struct value * |
1304 | thin_data_pntr (struct value *val) | |
14f9c5c9 | 1305 | { |
df407dfe | 1306 | struct type *type = value_type (val); |
556bdfd4 UW |
1307 | struct type *data_type = desc_data_target_type (thin_descriptor_type (type)); |
1308 | data_type = lookup_pointer_type (data_type); | |
1309 | ||
14f9c5c9 | 1310 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
556bdfd4 | 1311 | return value_cast (data_type, value_copy (val)); |
d2e4a39e | 1312 | else |
42ae5230 | 1313 | return value_from_longest (data_type, value_address (val)); |
14f9c5c9 AS |
1314 | } |
1315 | ||
4c4b4cd2 PH |
1316 | /* True iff TYPE indicates a "thick" array pointer type. */ |
1317 | ||
14f9c5c9 | 1318 | static int |
d2e4a39e | 1319 | is_thick_pntr (struct type *type) |
14f9c5c9 AS |
1320 | { |
1321 | type = desc_base_type (type); | |
1322 | return (type != NULL && TYPE_CODE (type) == TYPE_CODE_STRUCT | |
4c4b4cd2 | 1323 | && lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL); |
14f9c5c9 AS |
1324 | } |
1325 | ||
4c4b4cd2 PH |
1326 | /* If TYPE is the type of an array descriptor (fat or thin pointer) or a |
1327 | pointer to one, the type of its bounds data; otherwise, NULL. */ | |
76a01679 | 1328 | |
d2e4a39e AS |
1329 | static struct type * |
1330 | desc_bounds_type (struct type *type) | |
14f9c5c9 | 1331 | { |
d2e4a39e | 1332 | struct type *r; |
14f9c5c9 AS |
1333 | |
1334 | type = desc_base_type (type); | |
1335 | ||
1336 | if (type == NULL) | |
1337 | return NULL; | |
1338 | else if (is_thin_pntr (type)) | |
1339 | { | |
1340 | type = thin_descriptor_type (type); | |
1341 | if (type == NULL) | |
4c4b4cd2 | 1342 | return NULL; |
14f9c5c9 AS |
1343 | r = lookup_struct_elt_type (type, "BOUNDS", 1); |
1344 | if (r != NULL) | |
61ee279c | 1345 | return ada_check_typedef (r); |
14f9c5c9 AS |
1346 | } |
1347 | else if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
1348 | { | |
1349 | r = lookup_struct_elt_type (type, "P_BOUNDS", 1); | |
1350 | if (r != NULL) | |
61ee279c | 1351 | return ada_check_typedef (TYPE_TARGET_TYPE (ada_check_typedef (r))); |
14f9c5c9 AS |
1352 | } |
1353 | return NULL; | |
1354 | } | |
1355 | ||
1356 | /* If ARR is an array descriptor (fat or thin pointer), or pointer to | |
4c4b4cd2 PH |
1357 | one, a pointer to its bounds data. Otherwise NULL. */ |
1358 | ||
d2e4a39e AS |
1359 | static struct value * |
1360 | desc_bounds (struct value *arr) | |
14f9c5c9 | 1361 | { |
df407dfe | 1362 | struct type *type = ada_check_typedef (value_type (arr)); |
d2e4a39e | 1363 | if (is_thin_pntr (type)) |
14f9c5c9 | 1364 | { |
d2e4a39e | 1365 | struct type *bounds_type = |
4c4b4cd2 | 1366 | desc_bounds_type (thin_descriptor_type (type)); |
14f9c5c9 AS |
1367 | LONGEST addr; |
1368 | ||
4cdfadb1 | 1369 | if (bounds_type == NULL) |
323e0a4a | 1370 | error (_("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1371 | |
1372 | /* NOTE: The following calculation is not really kosher, but | |
d2e4a39e | 1373 | since desc_type is an XVE-encoded type (and shouldn't be), |
4c4b4cd2 | 1374 | the correct calculation is a real pain. FIXME (and fix GCC). */ |
14f9c5c9 | 1375 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
4c4b4cd2 | 1376 | addr = value_as_long (arr); |
d2e4a39e | 1377 | else |
42ae5230 | 1378 | addr = value_address (arr); |
14f9c5c9 | 1379 | |
d2e4a39e | 1380 | return |
4c4b4cd2 PH |
1381 | value_from_longest (lookup_pointer_type (bounds_type), |
1382 | addr - TYPE_LENGTH (bounds_type)); | |
14f9c5c9 AS |
1383 | } |
1384 | ||
1385 | else if (is_thick_pntr (type)) | |
d2e4a39e | 1386 | return value_struct_elt (&arr, NULL, "P_BOUNDS", NULL, |
323e0a4a | 1387 | _("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1388 | else |
1389 | return NULL; | |
1390 | } | |
1391 | ||
4c4b4cd2 PH |
1392 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit |
1393 | position of the field containing the address of the bounds data. */ | |
1394 | ||
14f9c5c9 | 1395 | static int |
d2e4a39e | 1396 | fat_pntr_bounds_bitpos (struct type *type) |
14f9c5c9 AS |
1397 | { |
1398 | return TYPE_FIELD_BITPOS (desc_base_type (type), 1); | |
1399 | } | |
1400 | ||
1401 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1402 | size of the field containing the address of the bounds data. */ |
1403 | ||
14f9c5c9 | 1404 | static int |
d2e4a39e | 1405 | fat_pntr_bounds_bitsize (struct type *type) |
14f9c5c9 AS |
1406 | { |
1407 | type = desc_base_type (type); | |
1408 | ||
d2e4a39e | 1409 | if (TYPE_FIELD_BITSIZE (type, 1) > 0) |
14f9c5c9 AS |
1410 | return TYPE_FIELD_BITSIZE (type, 1); |
1411 | else | |
61ee279c | 1412 | return 8 * TYPE_LENGTH (ada_check_typedef (TYPE_FIELD_TYPE (type, 1))); |
14f9c5c9 AS |
1413 | } |
1414 | ||
4c4b4cd2 | 1415 | /* If TYPE is the type of an array descriptor (fat or thin pointer) or a |
556bdfd4 UW |
1416 | pointer to one, the type of its array data (a array-with-no-bounds type); |
1417 | otherwise, NULL. Use ada_type_of_array to get an array type with bounds | |
1418 | data. */ | |
4c4b4cd2 | 1419 | |
d2e4a39e | 1420 | static struct type * |
556bdfd4 | 1421 | desc_data_target_type (struct type *type) |
14f9c5c9 AS |
1422 | { |
1423 | type = desc_base_type (type); | |
1424 | ||
4c4b4cd2 | 1425 | /* NOTE: The following is bogus; see comment in desc_bounds. */ |
14f9c5c9 | 1426 | if (is_thin_pntr (type)) |
556bdfd4 | 1427 | return desc_base_type (TYPE_FIELD_TYPE (thin_descriptor_type (type), 1)); |
14f9c5c9 | 1428 | else if (is_thick_pntr (type)) |
556bdfd4 UW |
1429 | { |
1430 | struct type *data_type = lookup_struct_elt_type (type, "P_ARRAY", 1); | |
1431 | ||
1432 | if (data_type | |
1433 | && TYPE_CODE (ada_check_typedef (data_type)) == TYPE_CODE_PTR) | |
1434 | return TYPE_TARGET_TYPE (data_type); | |
1435 | } | |
1436 | ||
1437 | return NULL; | |
14f9c5c9 AS |
1438 | } |
1439 | ||
1440 | /* If ARR is an array descriptor (fat or thin pointer), a pointer to | |
1441 | its array data. */ | |
4c4b4cd2 | 1442 | |
d2e4a39e AS |
1443 | static struct value * |
1444 | desc_data (struct value *arr) | |
14f9c5c9 | 1445 | { |
df407dfe | 1446 | struct type *type = value_type (arr); |
14f9c5c9 AS |
1447 | if (is_thin_pntr (type)) |
1448 | return thin_data_pntr (arr); | |
1449 | else if (is_thick_pntr (type)) | |
d2e4a39e | 1450 | return value_struct_elt (&arr, NULL, "P_ARRAY", NULL, |
323e0a4a | 1451 | _("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1452 | else |
1453 | return NULL; | |
1454 | } | |
1455 | ||
1456 | ||
1457 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1458 | position of the field containing the address of the data. */ |
1459 | ||
14f9c5c9 | 1460 | static int |
d2e4a39e | 1461 | fat_pntr_data_bitpos (struct type *type) |
14f9c5c9 AS |
1462 | { |
1463 | return TYPE_FIELD_BITPOS (desc_base_type (type), 0); | |
1464 | } | |
1465 | ||
1466 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1467 | size of the field containing the address of the data. */ |
1468 | ||
14f9c5c9 | 1469 | static int |
d2e4a39e | 1470 | fat_pntr_data_bitsize (struct type *type) |
14f9c5c9 AS |
1471 | { |
1472 | type = desc_base_type (type); | |
1473 | ||
1474 | if (TYPE_FIELD_BITSIZE (type, 0) > 0) | |
1475 | return TYPE_FIELD_BITSIZE (type, 0); | |
d2e4a39e | 1476 | else |
14f9c5c9 AS |
1477 | return TARGET_CHAR_BIT * TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)); |
1478 | } | |
1479 | ||
4c4b4cd2 | 1480 | /* If BOUNDS is an array-bounds structure (or pointer to one), return |
14f9c5c9 | 1481 | the Ith lower bound stored in it, if WHICH is 0, and the Ith upper |
4c4b4cd2 PH |
1482 | bound, if WHICH is 1. The first bound is I=1. */ |
1483 | ||
d2e4a39e AS |
1484 | static struct value * |
1485 | desc_one_bound (struct value *bounds, int i, int which) | |
14f9c5c9 | 1486 | { |
d2e4a39e | 1487 | return value_struct_elt (&bounds, NULL, bound_name[2 * i + which - 2], NULL, |
323e0a4a | 1488 | _("Bad GNAT array descriptor bounds")); |
14f9c5c9 AS |
1489 | } |
1490 | ||
1491 | /* If BOUNDS is an array-bounds structure type, return the bit position | |
1492 | of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper | |
4c4b4cd2 PH |
1493 | bound, if WHICH is 1. The first bound is I=1. */ |
1494 | ||
14f9c5c9 | 1495 | static int |
d2e4a39e | 1496 | desc_bound_bitpos (struct type *type, int i, int which) |
14f9c5c9 | 1497 | { |
d2e4a39e | 1498 | return TYPE_FIELD_BITPOS (desc_base_type (type), 2 * i + which - 2); |
14f9c5c9 AS |
1499 | } |
1500 | ||
1501 | /* If BOUNDS is an array-bounds structure type, return the bit field size | |
1502 | of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper | |
4c4b4cd2 PH |
1503 | bound, if WHICH is 1. The first bound is I=1. */ |
1504 | ||
76a01679 | 1505 | static int |
d2e4a39e | 1506 | desc_bound_bitsize (struct type *type, int i, int which) |
14f9c5c9 AS |
1507 | { |
1508 | type = desc_base_type (type); | |
1509 | ||
d2e4a39e AS |
1510 | if (TYPE_FIELD_BITSIZE (type, 2 * i + which - 2) > 0) |
1511 | return TYPE_FIELD_BITSIZE (type, 2 * i + which - 2); | |
1512 | else | |
1513 | return 8 * TYPE_LENGTH (TYPE_FIELD_TYPE (type, 2 * i + which - 2)); | |
14f9c5c9 AS |
1514 | } |
1515 | ||
1516 | /* If TYPE is the type of an array-bounds structure, the type of its | |
4c4b4cd2 PH |
1517 | Ith bound (numbering from 1). Otherwise, NULL. */ |
1518 | ||
d2e4a39e AS |
1519 | static struct type * |
1520 | desc_index_type (struct type *type, int i) | |
14f9c5c9 AS |
1521 | { |
1522 | type = desc_base_type (type); | |
1523 | ||
1524 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
d2e4a39e AS |
1525 | return lookup_struct_elt_type (type, bound_name[2 * i - 2], 1); |
1526 | else | |
14f9c5c9 AS |
1527 | return NULL; |
1528 | } | |
1529 | ||
4c4b4cd2 PH |
1530 | /* The number of index positions in the array-bounds type TYPE. |
1531 | Return 0 if TYPE is NULL. */ | |
1532 | ||
14f9c5c9 | 1533 | static int |
d2e4a39e | 1534 | desc_arity (struct type *type) |
14f9c5c9 AS |
1535 | { |
1536 | type = desc_base_type (type); | |
1537 | ||
1538 | if (type != NULL) | |
1539 | return TYPE_NFIELDS (type) / 2; | |
1540 | return 0; | |
1541 | } | |
1542 | ||
4c4b4cd2 PH |
1543 | /* Non-zero iff TYPE is a simple array type (not a pointer to one) or |
1544 | an array descriptor type (representing an unconstrained array | |
1545 | type). */ | |
1546 | ||
76a01679 JB |
1547 | static int |
1548 | ada_is_direct_array_type (struct type *type) | |
4c4b4cd2 PH |
1549 | { |
1550 | if (type == NULL) | |
1551 | return 0; | |
61ee279c | 1552 | type = ada_check_typedef (type); |
4c4b4cd2 | 1553 | return (TYPE_CODE (type) == TYPE_CODE_ARRAY |
76a01679 | 1554 | || ada_is_array_descriptor_type (type)); |
4c4b4cd2 PH |
1555 | } |
1556 | ||
52ce6436 PH |
1557 | /* Non-zero iff TYPE represents any kind of array in Ada, or a pointer |
1558 | * to one. */ | |
1559 | ||
2c0b251b | 1560 | static int |
52ce6436 PH |
1561 | ada_is_array_type (struct type *type) |
1562 | { | |
1563 | while (type != NULL | |
1564 | && (TYPE_CODE (type) == TYPE_CODE_PTR | |
1565 | || TYPE_CODE (type) == TYPE_CODE_REF)) | |
1566 | type = TYPE_TARGET_TYPE (type); | |
1567 | return ada_is_direct_array_type (type); | |
1568 | } | |
1569 | ||
4c4b4cd2 | 1570 | /* Non-zero iff TYPE is a simple array type or pointer to one. */ |
14f9c5c9 | 1571 | |
14f9c5c9 | 1572 | int |
4c4b4cd2 | 1573 | ada_is_simple_array_type (struct type *type) |
14f9c5c9 AS |
1574 | { |
1575 | if (type == NULL) | |
1576 | return 0; | |
61ee279c | 1577 | type = ada_check_typedef (type); |
14f9c5c9 | 1578 | return (TYPE_CODE (type) == TYPE_CODE_ARRAY |
4c4b4cd2 PH |
1579 | || (TYPE_CODE (type) == TYPE_CODE_PTR |
1580 | && TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_ARRAY)); | |
14f9c5c9 AS |
1581 | } |
1582 | ||
4c4b4cd2 PH |
1583 | /* Non-zero iff TYPE belongs to a GNAT array descriptor. */ |
1584 | ||
14f9c5c9 | 1585 | int |
4c4b4cd2 | 1586 | ada_is_array_descriptor_type (struct type *type) |
14f9c5c9 | 1587 | { |
556bdfd4 | 1588 | struct type *data_type = desc_data_target_type (type); |
14f9c5c9 AS |
1589 | |
1590 | if (type == NULL) | |
1591 | return 0; | |
61ee279c | 1592 | type = ada_check_typedef (type); |
556bdfd4 UW |
1593 | return (data_type != NULL |
1594 | && TYPE_CODE (data_type) == TYPE_CODE_ARRAY | |
1595 | && desc_arity (desc_bounds_type (type)) > 0); | |
14f9c5c9 AS |
1596 | } |
1597 | ||
1598 | /* Non-zero iff type is a partially mal-formed GNAT array | |
4c4b4cd2 | 1599 | descriptor. FIXME: This is to compensate for some problems with |
14f9c5c9 | 1600 | debugging output from GNAT. Re-examine periodically to see if it |
4c4b4cd2 PH |
1601 | is still needed. */ |
1602 | ||
14f9c5c9 | 1603 | int |
ebf56fd3 | 1604 | ada_is_bogus_array_descriptor (struct type *type) |
14f9c5c9 | 1605 | { |
d2e4a39e | 1606 | return |
14f9c5c9 AS |
1607 | type != NULL |
1608 | && TYPE_CODE (type) == TYPE_CODE_STRUCT | |
1609 | && (lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL | |
4c4b4cd2 PH |
1610 | || lookup_struct_elt_type (type, "P_ARRAY", 1) != NULL) |
1611 | && !ada_is_array_descriptor_type (type); | |
14f9c5c9 AS |
1612 | } |
1613 | ||
1614 | ||
4c4b4cd2 | 1615 | /* If ARR has a record type in the form of a standard GNAT array descriptor, |
14f9c5c9 | 1616 | (fat pointer) returns the type of the array data described---specifically, |
4c4b4cd2 | 1617 | a pointer-to-array type. If BOUNDS is non-zero, the bounds data are filled |
14f9c5c9 | 1618 | in from the descriptor; otherwise, they are left unspecified. If |
4c4b4cd2 PH |
1619 | the ARR denotes a null array descriptor and BOUNDS is non-zero, |
1620 | returns NULL. The result is simply the type of ARR if ARR is not | |
14f9c5c9 | 1621 | a descriptor. */ |
d2e4a39e AS |
1622 | struct type * |
1623 | ada_type_of_array (struct value *arr, int bounds) | |
14f9c5c9 | 1624 | { |
df407dfe AC |
1625 | if (ada_is_packed_array_type (value_type (arr))) |
1626 | return decode_packed_array_type (value_type (arr)); | |
14f9c5c9 | 1627 | |
df407dfe AC |
1628 | if (!ada_is_array_descriptor_type (value_type (arr))) |
1629 | return value_type (arr); | |
d2e4a39e AS |
1630 | |
1631 | if (!bounds) | |
1632 | return | |
556bdfd4 | 1633 | ada_check_typedef (desc_data_target_type (value_type (arr))); |
14f9c5c9 AS |
1634 | else |
1635 | { | |
d2e4a39e | 1636 | struct type *elt_type; |
14f9c5c9 | 1637 | int arity; |
d2e4a39e | 1638 | struct value *descriptor; |
14f9c5c9 | 1639 | |
df407dfe AC |
1640 | elt_type = ada_array_element_type (value_type (arr), -1); |
1641 | arity = ada_array_arity (value_type (arr)); | |
14f9c5c9 | 1642 | |
d2e4a39e | 1643 | if (elt_type == NULL || arity == 0) |
df407dfe | 1644 | return ada_check_typedef (value_type (arr)); |
14f9c5c9 AS |
1645 | |
1646 | descriptor = desc_bounds (arr); | |
d2e4a39e | 1647 | if (value_as_long (descriptor) == 0) |
4c4b4cd2 | 1648 | return NULL; |
d2e4a39e | 1649 | while (arity > 0) |
4c4b4cd2 | 1650 | { |
e9bb382b UW |
1651 | struct type *range_type = alloc_type_copy (value_type (arr)); |
1652 | struct type *array_type = alloc_type_copy (value_type (arr)); | |
4c4b4cd2 PH |
1653 | struct value *low = desc_one_bound (descriptor, arity, 0); |
1654 | struct value *high = desc_one_bound (descriptor, arity, 1); | |
1655 | arity -= 1; | |
1656 | ||
df407dfe | 1657 | create_range_type (range_type, value_type (low), |
529cad9c PH |
1658 | longest_to_int (value_as_long (low)), |
1659 | longest_to_int (value_as_long (high))); | |
4c4b4cd2 PH |
1660 | elt_type = create_array_type (array_type, elt_type, range_type); |
1661 | } | |
14f9c5c9 AS |
1662 | |
1663 | return lookup_pointer_type (elt_type); | |
1664 | } | |
1665 | } | |
1666 | ||
1667 | /* If ARR does not represent an array, returns ARR unchanged. | |
4c4b4cd2 PH |
1668 | Otherwise, returns either a standard GDB array with bounds set |
1669 | appropriately or, if ARR is a non-null fat pointer, a pointer to a standard | |
1670 | GDB array. Returns NULL if ARR is a null fat pointer. */ | |
1671 | ||
d2e4a39e AS |
1672 | struct value * |
1673 | ada_coerce_to_simple_array_ptr (struct value *arr) | |
14f9c5c9 | 1674 | { |
df407dfe | 1675 | if (ada_is_array_descriptor_type (value_type (arr))) |
14f9c5c9 | 1676 | { |
d2e4a39e | 1677 | struct type *arrType = ada_type_of_array (arr, 1); |
14f9c5c9 | 1678 | if (arrType == NULL) |
4c4b4cd2 | 1679 | return NULL; |
14f9c5c9 AS |
1680 | return value_cast (arrType, value_copy (desc_data (arr))); |
1681 | } | |
df407dfe | 1682 | else if (ada_is_packed_array_type (value_type (arr))) |
14f9c5c9 AS |
1683 | return decode_packed_array (arr); |
1684 | else | |
1685 | return arr; | |
1686 | } | |
1687 | ||
1688 | /* If ARR does not represent an array, returns ARR unchanged. | |
1689 | Otherwise, returns a standard GDB array describing ARR (which may | |
4c4b4cd2 PH |
1690 | be ARR itself if it already is in the proper form). */ |
1691 | ||
1692 | static struct value * | |
d2e4a39e | 1693 | ada_coerce_to_simple_array (struct value *arr) |
14f9c5c9 | 1694 | { |
df407dfe | 1695 | if (ada_is_array_descriptor_type (value_type (arr))) |
14f9c5c9 | 1696 | { |
d2e4a39e | 1697 | struct value *arrVal = ada_coerce_to_simple_array_ptr (arr); |
14f9c5c9 | 1698 | if (arrVal == NULL) |
323e0a4a | 1699 | error (_("Bounds unavailable for null array pointer.")); |
529cad9c | 1700 | check_size (TYPE_TARGET_TYPE (value_type (arrVal))); |
14f9c5c9 AS |
1701 | return value_ind (arrVal); |
1702 | } | |
df407dfe | 1703 | else if (ada_is_packed_array_type (value_type (arr))) |
14f9c5c9 | 1704 | return decode_packed_array (arr); |
d2e4a39e | 1705 | else |
14f9c5c9 AS |
1706 | return arr; |
1707 | } | |
1708 | ||
1709 | /* If TYPE represents a GNAT array type, return it translated to an | |
1710 | ordinary GDB array type (possibly with BITSIZE fields indicating | |
4c4b4cd2 PH |
1711 | packing). For other types, is the identity. */ |
1712 | ||
d2e4a39e AS |
1713 | struct type * |
1714 | ada_coerce_to_simple_array_type (struct type *type) | |
14f9c5c9 | 1715 | { |
17280b9f UW |
1716 | if (ada_is_packed_array_type (type)) |
1717 | return decode_packed_array_type (type); | |
1718 | ||
1719 | if (ada_is_array_descriptor_type (type)) | |
556bdfd4 | 1720 | return ada_check_typedef (desc_data_target_type (type)); |
17280b9f UW |
1721 | |
1722 | return type; | |
14f9c5c9 AS |
1723 | } |
1724 | ||
4c4b4cd2 PH |
1725 | /* Non-zero iff TYPE represents a standard GNAT packed-array type. */ |
1726 | ||
14f9c5c9 | 1727 | int |
d2e4a39e | 1728 | ada_is_packed_array_type (struct type *type) |
14f9c5c9 AS |
1729 | { |
1730 | if (type == NULL) | |
1731 | return 0; | |
4c4b4cd2 | 1732 | type = desc_base_type (type); |
61ee279c | 1733 | type = ada_check_typedef (type); |
d2e4a39e | 1734 | return |
14f9c5c9 AS |
1735 | ada_type_name (type) != NULL |
1736 | && strstr (ada_type_name (type), "___XP") != NULL; | |
1737 | } | |
1738 | ||
1739 | /* Given that TYPE is a standard GDB array type with all bounds filled | |
1740 | in, and that the element size of its ultimate scalar constituents | |
1741 | (that is, either its elements, or, if it is an array of arrays, its | |
1742 | elements' elements, etc.) is *ELT_BITS, return an identical type, | |
1743 | but with the bit sizes of its elements (and those of any | |
1744 | constituent arrays) recorded in the BITSIZE components of its | |
4c4b4cd2 PH |
1745 | TYPE_FIELD_BITSIZE values, and with *ELT_BITS set to its total size |
1746 | in bits. */ | |
1747 | ||
d2e4a39e AS |
1748 | static struct type * |
1749 | packed_array_type (struct type *type, long *elt_bits) | |
14f9c5c9 | 1750 | { |
d2e4a39e AS |
1751 | struct type *new_elt_type; |
1752 | struct type *new_type; | |
14f9c5c9 AS |
1753 | LONGEST low_bound, high_bound; |
1754 | ||
61ee279c | 1755 | type = ada_check_typedef (type); |
14f9c5c9 AS |
1756 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY) |
1757 | return type; | |
1758 | ||
e9bb382b | 1759 | new_type = alloc_type_copy (type); |
61ee279c | 1760 | new_elt_type = packed_array_type (ada_check_typedef (TYPE_TARGET_TYPE (type)), |
4c4b4cd2 | 1761 | elt_bits); |
262452ec | 1762 | create_array_type (new_type, new_elt_type, TYPE_INDEX_TYPE (type)); |
14f9c5c9 AS |
1763 | TYPE_FIELD_BITSIZE (new_type, 0) = *elt_bits; |
1764 | TYPE_NAME (new_type) = ada_type_name (type); | |
1765 | ||
262452ec | 1766 | if (get_discrete_bounds (TYPE_INDEX_TYPE (type), |
4c4b4cd2 | 1767 | &low_bound, &high_bound) < 0) |
14f9c5c9 AS |
1768 | low_bound = high_bound = 0; |
1769 | if (high_bound < low_bound) | |
1770 | *elt_bits = TYPE_LENGTH (new_type) = 0; | |
d2e4a39e | 1771 | else |
14f9c5c9 AS |
1772 | { |
1773 | *elt_bits *= (high_bound - low_bound + 1); | |
d2e4a39e | 1774 | TYPE_LENGTH (new_type) = |
4c4b4cd2 | 1775 | (*elt_bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; |
14f9c5c9 AS |
1776 | } |
1777 | ||
876cecd0 | 1778 | TYPE_FIXED_INSTANCE (new_type) = 1; |
14f9c5c9 AS |
1779 | return new_type; |
1780 | } | |
1781 | ||
4c4b4cd2 PH |
1782 | /* The array type encoded by TYPE, where ada_is_packed_array_type (TYPE). */ |
1783 | ||
d2e4a39e AS |
1784 | static struct type * |
1785 | decode_packed_array_type (struct type *type) | |
1786 | { | |
4c4b4cd2 | 1787 | struct symbol *sym; |
d2e4a39e | 1788 | struct block **blocks; |
727e3d2e JB |
1789 | char *raw_name = ada_type_name (ada_check_typedef (type)); |
1790 | char *name; | |
1791 | char *tail; | |
d2e4a39e | 1792 | struct type *shadow_type; |
14f9c5c9 AS |
1793 | long bits; |
1794 | int i, n; | |
1795 | ||
727e3d2e JB |
1796 | if (!raw_name) |
1797 | raw_name = ada_type_name (desc_base_type (type)); | |
1798 | ||
1799 | if (!raw_name) | |
1800 | return NULL; | |
1801 | ||
1802 | name = (char *) alloca (strlen (raw_name) + 1); | |
1803 | tail = strstr (raw_name, "___XP"); | |
4c4b4cd2 PH |
1804 | type = desc_base_type (type); |
1805 | ||
14f9c5c9 AS |
1806 | memcpy (name, raw_name, tail - raw_name); |
1807 | name[tail - raw_name] = '\000'; | |
1808 | ||
4c4b4cd2 PH |
1809 | sym = standard_lookup (name, get_selected_block (0), VAR_DOMAIN); |
1810 | if (sym == NULL || SYMBOL_TYPE (sym) == NULL) | |
14f9c5c9 | 1811 | { |
323e0a4a | 1812 | lim_warning (_("could not find bounds information on packed array")); |
14f9c5c9 AS |
1813 | return NULL; |
1814 | } | |
4c4b4cd2 | 1815 | shadow_type = SYMBOL_TYPE (sym); |
cb249c71 | 1816 | CHECK_TYPEDEF (shadow_type); |
14f9c5c9 AS |
1817 | |
1818 | if (TYPE_CODE (shadow_type) != TYPE_CODE_ARRAY) | |
1819 | { | |
323e0a4a | 1820 | lim_warning (_("could not understand bounds information on packed array")); |
14f9c5c9 AS |
1821 | return NULL; |
1822 | } | |
d2e4a39e | 1823 | |
14f9c5c9 AS |
1824 | if (sscanf (tail + sizeof ("___XP") - 1, "%ld", &bits) != 1) |
1825 | { | |
4c4b4cd2 | 1826 | lim_warning |
323e0a4a | 1827 | (_("could not understand bit size information on packed array")); |
14f9c5c9 AS |
1828 | return NULL; |
1829 | } | |
d2e4a39e | 1830 | |
14f9c5c9 AS |
1831 | return packed_array_type (shadow_type, &bits); |
1832 | } | |
1833 | ||
4c4b4cd2 | 1834 | /* Given that ARR is a struct value *indicating a GNAT packed array, |
14f9c5c9 AS |
1835 | returns a simple array that denotes that array. Its type is a |
1836 | standard GDB array type except that the BITSIZEs of the array | |
1837 | target types are set to the number of bits in each element, and the | |
4c4b4cd2 | 1838 | type length is set appropriately. */ |
14f9c5c9 | 1839 | |
d2e4a39e AS |
1840 | static struct value * |
1841 | decode_packed_array (struct value *arr) | |
14f9c5c9 | 1842 | { |
4c4b4cd2 | 1843 | struct type *type; |
14f9c5c9 | 1844 | |
4c4b4cd2 | 1845 | arr = ada_coerce_ref (arr); |
284614f0 JB |
1846 | |
1847 | /* If our value is a pointer, then dererence it. Make sure that | |
1848 | this operation does not cause the target type to be fixed, as | |
1849 | this would indirectly cause this array to be decoded. The rest | |
1850 | of the routine assumes that the array hasn't been decoded yet, | |
1851 | so we use the basic "value_ind" routine to perform the dereferencing, | |
1852 | as opposed to using "ada_value_ind". */ | |
df407dfe | 1853 | if (TYPE_CODE (value_type (arr)) == TYPE_CODE_PTR) |
284614f0 | 1854 | arr = value_ind (arr); |
4c4b4cd2 | 1855 | |
df407dfe | 1856 | type = decode_packed_array_type (value_type (arr)); |
14f9c5c9 AS |
1857 | if (type == NULL) |
1858 | { | |
323e0a4a | 1859 | error (_("can't unpack array")); |
14f9c5c9 AS |
1860 | return NULL; |
1861 | } | |
61ee279c | 1862 | |
50810684 | 1863 | if (gdbarch_bits_big_endian (get_type_arch (value_type (arr))) |
32c9a795 | 1864 | && ada_is_modular_type (value_type (arr))) |
61ee279c PH |
1865 | { |
1866 | /* This is a (right-justified) modular type representing a packed | |
1867 | array with no wrapper. In order to interpret the value through | |
1868 | the (left-justified) packed array type we just built, we must | |
1869 | first left-justify it. */ | |
1870 | int bit_size, bit_pos; | |
1871 | ULONGEST mod; | |
1872 | ||
df407dfe | 1873 | mod = ada_modulus (value_type (arr)) - 1; |
61ee279c PH |
1874 | bit_size = 0; |
1875 | while (mod > 0) | |
1876 | { | |
1877 | bit_size += 1; | |
1878 | mod >>= 1; | |
1879 | } | |
df407dfe | 1880 | bit_pos = HOST_CHAR_BIT * TYPE_LENGTH (value_type (arr)) - bit_size; |
61ee279c PH |
1881 | arr = ada_value_primitive_packed_val (arr, NULL, |
1882 | bit_pos / HOST_CHAR_BIT, | |
1883 | bit_pos % HOST_CHAR_BIT, | |
1884 | bit_size, | |
1885 | type); | |
1886 | } | |
1887 | ||
4c4b4cd2 | 1888 | return coerce_unspec_val_to_type (arr, type); |
14f9c5c9 AS |
1889 | } |
1890 | ||
1891 | ||
1892 | /* The value of the element of packed array ARR at the ARITY indices | |
4c4b4cd2 | 1893 | given in IND. ARR must be a simple array. */ |
14f9c5c9 | 1894 | |
d2e4a39e AS |
1895 | static struct value * |
1896 | value_subscript_packed (struct value *arr, int arity, struct value **ind) | |
14f9c5c9 AS |
1897 | { |
1898 | int i; | |
1899 | int bits, elt_off, bit_off; | |
1900 | long elt_total_bit_offset; | |
d2e4a39e AS |
1901 | struct type *elt_type; |
1902 | struct value *v; | |
14f9c5c9 AS |
1903 | |
1904 | bits = 0; | |
1905 | elt_total_bit_offset = 0; | |
df407dfe | 1906 | elt_type = ada_check_typedef (value_type (arr)); |
d2e4a39e | 1907 | for (i = 0; i < arity; i += 1) |
14f9c5c9 | 1908 | { |
d2e4a39e | 1909 | if (TYPE_CODE (elt_type) != TYPE_CODE_ARRAY |
4c4b4cd2 PH |
1910 | || TYPE_FIELD_BITSIZE (elt_type, 0) == 0) |
1911 | error | |
323e0a4a | 1912 | (_("attempt to do packed indexing of something other than a packed array")); |
14f9c5c9 | 1913 | else |
4c4b4cd2 PH |
1914 | { |
1915 | struct type *range_type = TYPE_INDEX_TYPE (elt_type); | |
1916 | LONGEST lowerbound, upperbound; | |
1917 | LONGEST idx; | |
1918 | ||
1919 | if (get_discrete_bounds (range_type, &lowerbound, &upperbound) < 0) | |
1920 | { | |
323e0a4a | 1921 | lim_warning (_("don't know bounds of array")); |
4c4b4cd2 PH |
1922 | lowerbound = upperbound = 0; |
1923 | } | |
1924 | ||
3cb382c9 | 1925 | idx = pos_atr (ind[i]); |
4c4b4cd2 | 1926 | if (idx < lowerbound || idx > upperbound) |
323e0a4a | 1927 | lim_warning (_("packed array index %ld out of bounds"), (long) idx); |
4c4b4cd2 PH |
1928 | bits = TYPE_FIELD_BITSIZE (elt_type, 0); |
1929 | elt_total_bit_offset += (idx - lowerbound) * bits; | |
61ee279c | 1930 | elt_type = ada_check_typedef (TYPE_TARGET_TYPE (elt_type)); |
4c4b4cd2 | 1931 | } |
14f9c5c9 AS |
1932 | } |
1933 | elt_off = elt_total_bit_offset / HOST_CHAR_BIT; | |
1934 | bit_off = elt_total_bit_offset % HOST_CHAR_BIT; | |
d2e4a39e AS |
1935 | |
1936 | v = ada_value_primitive_packed_val (arr, NULL, elt_off, bit_off, | |
4c4b4cd2 | 1937 | bits, elt_type); |
14f9c5c9 AS |
1938 | return v; |
1939 | } | |
1940 | ||
4c4b4cd2 | 1941 | /* Non-zero iff TYPE includes negative integer values. */ |
14f9c5c9 AS |
1942 | |
1943 | static int | |
d2e4a39e | 1944 | has_negatives (struct type *type) |
14f9c5c9 | 1945 | { |
d2e4a39e AS |
1946 | switch (TYPE_CODE (type)) |
1947 | { | |
1948 | default: | |
1949 | return 0; | |
1950 | case TYPE_CODE_INT: | |
1951 | return !TYPE_UNSIGNED (type); | |
1952 | case TYPE_CODE_RANGE: | |
1953 | return TYPE_LOW_BOUND (type) < 0; | |
1954 | } | |
14f9c5c9 | 1955 | } |
d2e4a39e | 1956 | |
14f9c5c9 AS |
1957 | |
1958 | /* Create a new value of type TYPE from the contents of OBJ starting | |
1959 | at byte OFFSET, and bit offset BIT_OFFSET within that byte, | |
1960 | proceeding for BIT_SIZE bits. If OBJ is an lval in memory, then | |
4c4b4cd2 PH |
1961 | assigning through the result will set the field fetched from. |
1962 | VALADDR is ignored unless OBJ is NULL, in which case, | |
1963 | VALADDR+OFFSET must address the start of storage containing the | |
1964 | packed value. The value returned in this case is never an lval. | |
1965 | Assumes 0 <= BIT_OFFSET < HOST_CHAR_BIT. */ | |
14f9c5c9 | 1966 | |
d2e4a39e | 1967 | struct value * |
fc1a4b47 | 1968 | ada_value_primitive_packed_val (struct value *obj, const gdb_byte *valaddr, |
a2bd3dcd | 1969 | long offset, int bit_offset, int bit_size, |
4c4b4cd2 | 1970 | struct type *type) |
14f9c5c9 | 1971 | { |
d2e4a39e | 1972 | struct value *v; |
4c4b4cd2 PH |
1973 | int src, /* Index into the source area */ |
1974 | targ, /* Index into the target area */ | |
1975 | srcBitsLeft, /* Number of source bits left to move */ | |
1976 | nsrc, ntarg, /* Number of source and target bytes */ | |
1977 | unusedLS, /* Number of bits in next significant | |
1978 | byte of source that are unused */ | |
1979 | accumSize; /* Number of meaningful bits in accum */ | |
1980 | unsigned char *bytes; /* First byte containing data to unpack */ | |
d2e4a39e | 1981 | unsigned char *unpacked; |
4c4b4cd2 | 1982 | unsigned long accum; /* Staging area for bits being transferred */ |
14f9c5c9 AS |
1983 | unsigned char sign; |
1984 | int len = (bit_size + bit_offset + HOST_CHAR_BIT - 1) / 8; | |
4c4b4cd2 PH |
1985 | /* Transmit bytes from least to most significant; delta is the direction |
1986 | the indices move. */ | |
50810684 | 1987 | int delta = gdbarch_bits_big_endian (get_type_arch (type)) ? -1 : 1; |
14f9c5c9 | 1988 | |
61ee279c | 1989 | type = ada_check_typedef (type); |
14f9c5c9 AS |
1990 | |
1991 | if (obj == NULL) | |
1992 | { | |
1993 | v = allocate_value (type); | |
d2e4a39e | 1994 | bytes = (unsigned char *) (valaddr + offset); |
14f9c5c9 | 1995 | } |
9214ee5f | 1996 | else if (VALUE_LVAL (obj) == lval_memory && value_lazy (obj)) |
14f9c5c9 AS |
1997 | { |
1998 | v = value_at (type, | |
42ae5230 | 1999 | value_address (obj) + offset); |
d2e4a39e | 2000 | bytes = (unsigned char *) alloca (len); |
42ae5230 | 2001 | read_memory (value_address (v), bytes, len); |
14f9c5c9 | 2002 | } |
d2e4a39e | 2003 | else |
14f9c5c9 AS |
2004 | { |
2005 | v = allocate_value (type); | |
0fd88904 | 2006 | bytes = (unsigned char *) value_contents (obj) + offset; |
14f9c5c9 | 2007 | } |
d2e4a39e AS |
2008 | |
2009 | if (obj != NULL) | |
14f9c5c9 | 2010 | { |
42ae5230 | 2011 | CORE_ADDR new_addr; |
74bcbdf3 | 2012 | set_value_component_location (v, obj); |
42ae5230 | 2013 | new_addr = value_address (obj) + offset; |
9bbda503 AC |
2014 | set_value_bitpos (v, bit_offset + value_bitpos (obj)); |
2015 | set_value_bitsize (v, bit_size); | |
df407dfe | 2016 | if (value_bitpos (v) >= HOST_CHAR_BIT) |
4c4b4cd2 | 2017 | { |
42ae5230 | 2018 | ++new_addr; |
9bbda503 | 2019 | set_value_bitpos (v, value_bitpos (v) - HOST_CHAR_BIT); |
4c4b4cd2 | 2020 | } |
42ae5230 | 2021 | set_value_address (v, new_addr); |
14f9c5c9 AS |
2022 | } |
2023 | else | |
9bbda503 | 2024 | set_value_bitsize (v, bit_size); |
0fd88904 | 2025 | unpacked = (unsigned char *) value_contents (v); |
14f9c5c9 AS |
2026 | |
2027 | srcBitsLeft = bit_size; | |
2028 | nsrc = len; | |
2029 | ntarg = TYPE_LENGTH (type); | |
2030 | sign = 0; | |
2031 | if (bit_size == 0) | |
2032 | { | |
2033 | memset (unpacked, 0, TYPE_LENGTH (type)); | |
2034 | return v; | |
2035 | } | |
50810684 | 2036 | else if (gdbarch_bits_big_endian (get_type_arch (type))) |
14f9c5c9 | 2037 | { |
d2e4a39e | 2038 | src = len - 1; |
1265e4aa JB |
2039 | if (has_negatives (type) |
2040 | && ((bytes[0] << bit_offset) & (1 << (HOST_CHAR_BIT - 1)))) | |
4c4b4cd2 | 2041 | sign = ~0; |
d2e4a39e AS |
2042 | |
2043 | unusedLS = | |
4c4b4cd2 PH |
2044 | (HOST_CHAR_BIT - (bit_size + bit_offset) % HOST_CHAR_BIT) |
2045 | % HOST_CHAR_BIT; | |
14f9c5c9 AS |
2046 | |
2047 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
2048 | { |
2049 | case TYPE_CODE_ARRAY: | |
2050 | case TYPE_CODE_UNION: | |
2051 | case TYPE_CODE_STRUCT: | |
2052 | /* Non-scalar values must be aligned at a byte boundary... */ | |
2053 | accumSize = | |
2054 | (HOST_CHAR_BIT - bit_size % HOST_CHAR_BIT) % HOST_CHAR_BIT; | |
2055 | /* ... And are placed at the beginning (most-significant) bytes | |
2056 | of the target. */ | |
529cad9c | 2057 | targ = (bit_size + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT - 1; |
0056e4d5 | 2058 | ntarg = targ + 1; |
4c4b4cd2 PH |
2059 | break; |
2060 | default: | |
2061 | accumSize = 0; | |
2062 | targ = TYPE_LENGTH (type) - 1; | |
2063 | break; | |
2064 | } | |
14f9c5c9 | 2065 | } |
d2e4a39e | 2066 | else |
14f9c5c9 AS |
2067 | { |
2068 | int sign_bit_offset = (bit_size + bit_offset - 1) % 8; | |
2069 | ||
2070 | src = targ = 0; | |
2071 | unusedLS = bit_offset; | |
2072 | accumSize = 0; | |
2073 | ||
d2e4a39e | 2074 | if (has_negatives (type) && (bytes[len - 1] & (1 << sign_bit_offset))) |
4c4b4cd2 | 2075 | sign = ~0; |
14f9c5c9 | 2076 | } |
d2e4a39e | 2077 | |
14f9c5c9 AS |
2078 | accum = 0; |
2079 | while (nsrc > 0) | |
2080 | { | |
2081 | /* Mask for removing bits of the next source byte that are not | |
4c4b4cd2 | 2082 | part of the value. */ |
d2e4a39e | 2083 | unsigned int unusedMSMask = |
4c4b4cd2 PH |
2084 | (1 << (srcBitsLeft >= HOST_CHAR_BIT ? HOST_CHAR_BIT : srcBitsLeft)) - |
2085 | 1; | |
2086 | /* Sign-extend bits for this byte. */ | |
14f9c5c9 | 2087 | unsigned int signMask = sign & ~unusedMSMask; |
d2e4a39e | 2088 | accum |= |
4c4b4cd2 | 2089 | (((bytes[src] >> unusedLS) & unusedMSMask) | signMask) << accumSize; |
14f9c5c9 | 2090 | accumSize += HOST_CHAR_BIT - unusedLS; |
d2e4a39e | 2091 | if (accumSize >= HOST_CHAR_BIT) |
4c4b4cd2 PH |
2092 | { |
2093 | unpacked[targ] = accum & ~(~0L << HOST_CHAR_BIT); | |
2094 | accumSize -= HOST_CHAR_BIT; | |
2095 | accum >>= HOST_CHAR_BIT; | |
2096 | ntarg -= 1; | |
2097 | targ += delta; | |
2098 | } | |
14f9c5c9 AS |
2099 | srcBitsLeft -= HOST_CHAR_BIT - unusedLS; |
2100 | unusedLS = 0; | |
2101 | nsrc -= 1; | |
2102 | src += delta; | |
2103 | } | |
2104 | while (ntarg > 0) | |
2105 | { | |
2106 | accum |= sign << accumSize; | |
2107 | unpacked[targ] = accum & ~(~0L << HOST_CHAR_BIT); | |
2108 | accumSize -= HOST_CHAR_BIT; | |
2109 | accum >>= HOST_CHAR_BIT; | |
2110 | ntarg -= 1; | |
2111 | targ += delta; | |
2112 | } | |
2113 | ||
2114 | return v; | |
2115 | } | |
d2e4a39e | 2116 | |
14f9c5c9 AS |
2117 | /* Move N bits from SOURCE, starting at bit offset SRC_OFFSET to |
2118 | TARGET, starting at bit offset TARG_OFFSET. SOURCE and TARGET must | |
4c4b4cd2 | 2119 | not overlap. */ |
14f9c5c9 | 2120 | static void |
fc1a4b47 | 2121 | move_bits (gdb_byte *target, int targ_offset, const gdb_byte *source, |
50810684 | 2122 | int src_offset, int n, int bits_big_endian_p) |
14f9c5c9 AS |
2123 | { |
2124 | unsigned int accum, mask; | |
2125 | int accum_bits, chunk_size; | |
2126 | ||
2127 | target += targ_offset / HOST_CHAR_BIT; | |
2128 | targ_offset %= HOST_CHAR_BIT; | |
2129 | source += src_offset / HOST_CHAR_BIT; | |
2130 | src_offset %= HOST_CHAR_BIT; | |
50810684 | 2131 | if (bits_big_endian_p) |
14f9c5c9 AS |
2132 | { |
2133 | accum = (unsigned char) *source; | |
2134 | source += 1; | |
2135 | accum_bits = HOST_CHAR_BIT - src_offset; | |
2136 | ||
d2e4a39e | 2137 | while (n > 0) |
4c4b4cd2 PH |
2138 | { |
2139 | int unused_right; | |
2140 | accum = (accum << HOST_CHAR_BIT) + (unsigned char) *source; | |
2141 | accum_bits += HOST_CHAR_BIT; | |
2142 | source += 1; | |
2143 | chunk_size = HOST_CHAR_BIT - targ_offset; | |
2144 | if (chunk_size > n) | |
2145 | chunk_size = n; | |
2146 | unused_right = HOST_CHAR_BIT - (chunk_size + targ_offset); | |
2147 | mask = ((1 << chunk_size) - 1) << unused_right; | |
2148 | *target = | |
2149 | (*target & ~mask) | |
2150 | | ((accum >> (accum_bits - chunk_size - unused_right)) & mask); | |
2151 | n -= chunk_size; | |
2152 | accum_bits -= chunk_size; | |
2153 | target += 1; | |
2154 | targ_offset = 0; | |
2155 | } | |
14f9c5c9 AS |
2156 | } |
2157 | else | |
2158 | { | |
2159 | accum = (unsigned char) *source >> src_offset; | |
2160 | source += 1; | |
2161 | accum_bits = HOST_CHAR_BIT - src_offset; | |
2162 | ||
d2e4a39e | 2163 | while (n > 0) |
4c4b4cd2 PH |
2164 | { |
2165 | accum = accum + ((unsigned char) *source << accum_bits); | |
2166 | accum_bits += HOST_CHAR_BIT; | |
2167 | source += 1; | |
2168 | chunk_size = HOST_CHAR_BIT - targ_offset; | |
2169 | if (chunk_size > n) | |
2170 | chunk_size = n; | |
2171 | mask = ((1 << chunk_size) - 1) << targ_offset; | |
2172 | *target = (*target & ~mask) | ((accum << targ_offset) & mask); | |
2173 | n -= chunk_size; | |
2174 | accum_bits -= chunk_size; | |
2175 | accum >>= chunk_size; | |
2176 | target += 1; | |
2177 | targ_offset = 0; | |
2178 | } | |
14f9c5c9 AS |
2179 | } |
2180 | } | |
2181 | ||
14f9c5c9 AS |
2182 | /* Store the contents of FROMVAL into the location of TOVAL. |
2183 | Return a new value with the location of TOVAL and contents of | |
2184 | FROMVAL. Handles assignment into packed fields that have | |
4c4b4cd2 | 2185 | floating-point or non-scalar types. */ |
14f9c5c9 | 2186 | |
d2e4a39e AS |
2187 | static struct value * |
2188 | ada_value_assign (struct value *toval, struct value *fromval) | |
14f9c5c9 | 2189 | { |
df407dfe AC |
2190 | struct type *type = value_type (toval); |
2191 | int bits = value_bitsize (toval); | |
14f9c5c9 | 2192 | |
52ce6436 PH |
2193 | toval = ada_coerce_ref (toval); |
2194 | fromval = ada_coerce_ref (fromval); | |
2195 | ||
2196 | if (ada_is_direct_array_type (value_type (toval))) | |
2197 | toval = ada_coerce_to_simple_array (toval); | |
2198 | if (ada_is_direct_array_type (value_type (fromval))) | |
2199 | fromval = ada_coerce_to_simple_array (fromval); | |
2200 | ||
88e3b34b | 2201 | if (!deprecated_value_modifiable (toval)) |
323e0a4a | 2202 | error (_("Left operand of assignment is not a modifiable lvalue.")); |
14f9c5c9 | 2203 | |
d2e4a39e | 2204 | if (VALUE_LVAL (toval) == lval_memory |
14f9c5c9 | 2205 | && bits > 0 |
d2e4a39e | 2206 | && (TYPE_CODE (type) == TYPE_CODE_FLT |
4c4b4cd2 | 2207 | || TYPE_CODE (type) == TYPE_CODE_STRUCT)) |
14f9c5c9 | 2208 | { |
df407dfe AC |
2209 | int len = (value_bitpos (toval) |
2210 | + bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; | |
aced2898 | 2211 | int from_size; |
d2e4a39e AS |
2212 | char *buffer = (char *) alloca (len); |
2213 | struct value *val; | |
42ae5230 | 2214 | CORE_ADDR to_addr = value_address (toval); |
14f9c5c9 AS |
2215 | |
2216 | if (TYPE_CODE (type) == TYPE_CODE_FLT) | |
4c4b4cd2 | 2217 | fromval = value_cast (type, fromval); |
14f9c5c9 | 2218 | |
52ce6436 | 2219 | read_memory (to_addr, buffer, len); |
aced2898 PH |
2220 | from_size = value_bitsize (fromval); |
2221 | if (from_size == 0) | |
2222 | from_size = TYPE_LENGTH (value_type (fromval)) * TARGET_CHAR_BIT; | |
50810684 | 2223 | if (gdbarch_bits_big_endian (get_type_arch (type))) |
df407dfe | 2224 | move_bits (buffer, value_bitpos (toval), |
50810684 | 2225 | value_contents (fromval), from_size - bits, bits, 1); |
14f9c5c9 | 2226 | else |
50810684 UW |
2227 | move_bits (buffer, value_bitpos (toval), |
2228 | value_contents (fromval), 0, bits, 0); | |
52ce6436 PH |
2229 | write_memory (to_addr, buffer, len); |
2230 | if (deprecated_memory_changed_hook) | |
2231 | deprecated_memory_changed_hook (to_addr, len); | |
2232 | ||
14f9c5c9 | 2233 | val = value_copy (toval); |
0fd88904 | 2234 | memcpy (value_contents_raw (val), value_contents (fromval), |
4c4b4cd2 | 2235 | TYPE_LENGTH (type)); |
04624583 | 2236 | deprecated_set_value_type (val, type); |
d2e4a39e | 2237 | |
14f9c5c9 AS |
2238 | return val; |
2239 | } | |
2240 | ||
2241 | return value_assign (toval, fromval); | |
2242 | } | |
2243 | ||
2244 | ||
52ce6436 PH |
2245 | /* Given that COMPONENT is a memory lvalue that is part of the lvalue |
2246 | * CONTAINER, assign the contents of VAL to COMPONENTS's place in | |
2247 | * CONTAINER. Modifies the VALUE_CONTENTS of CONTAINER only, not | |
2248 | * COMPONENT, and not the inferior's memory. The current contents | |
2249 | * of COMPONENT are ignored. */ | |
2250 | static void | |
2251 | value_assign_to_component (struct value *container, struct value *component, | |
2252 | struct value *val) | |
2253 | { | |
2254 | LONGEST offset_in_container = | |
42ae5230 | 2255 | (LONGEST) (value_address (component) - value_address (container)); |
52ce6436 PH |
2256 | int bit_offset_in_container = |
2257 | value_bitpos (component) - value_bitpos (container); | |
2258 | int bits; | |
2259 | ||
2260 | val = value_cast (value_type (component), val); | |
2261 | ||
2262 | if (value_bitsize (component) == 0) | |
2263 | bits = TARGET_CHAR_BIT * TYPE_LENGTH (value_type (component)); | |
2264 | else | |
2265 | bits = value_bitsize (component); | |
2266 | ||
50810684 | 2267 | if (gdbarch_bits_big_endian (get_type_arch (value_type (container)))) |
52ce6436 PH |
2268 | move_bits (value_contents_writeable (container) + offset_in_container, |
2269 | value_bitpos (container) + bit_offset_in_container, | |
2270 | value_contents (val), | |
2271 | TYPE_LENGTH (value_type (component)) * TARGET_CHAR_BIT - bits, | |
50810684 | 2272 | bits, 1); |
52ce6436 PH |
2273 | else |
2274 | move_bits (value_contents_writeable (container) + offset_in_container, | |
2275 | value_bitpos (container) + bit_offset_in_container, | |
50810684 | 2276 | value_contents (val), 0, bits, 0); |
52ce6436 PH |
2277 | } |
2278 | ||
4c4b4cd2 PH |
2279 | /* The value of the element of array ARR at the ARITY indices given in IND. |
2280 | ARR may be either a simple array, GNAT array descriptor, or pointer | |
14f9c5c9 AS |
2281 | thereto. */ |
2282 | ||
d2e4a39e AS |
2283 | struct value * |
2284 | ada_value_subscript (struct value *arr, int arity, struct value **ind) | |
14f9c5c9 AS |
2285 | { |
2286 | int k; | |
d2e4a39e AS |
2287 | struct value *elt; |
2288 | struct type *elt_type; | |
14f9c5c9 AS |
2289 | |
2290 | elt = ada_coerce_to_simple_array (arr); | |
2291 | ||
df407dfe | 2292 | elt_type = ada_check_typedef (value_type (elt)); |
d2e4a39e | 2293 | if (TYPE_CODE (elt_type) == TYPE_CODE_ARRAY |
14f9c5c9 AS |
2294 | && TYPE_FIELD_BITSIZE (elt_type, 0) > 0) |
2295 | return value_subscript_packed (elt, arity, ind); | |
2296 | ||
2297 | for (k = 0; k < arity; k += 1) | |
2298 | { | |
2299 | if (TYPE_CODE (elt_type) != TYPE_CODE_ARRAY) | |
323e0a4a | 2300 | error (_("too many subscripts (%d expected)"), k); |
2497b498 | 2301 | elt = value_subscript (elt, pos_atr (ind[k])); |
14f9c5c9 AS |
2302 | } |
2303 | return elt; | |
2304 | } | |
2305 | ||
2306 | /* Assuming ARR is a pointer to a standard GDB array of type TYPE, the | |
2307 | value of the element of *ARR at the ARITY indices given in | |
4c4b4cd2 | 2308 | IND. Does not read the entire array into memory. */ |
14f9c5c9 | 2309 | |
2c0b251b | 2310 | static struct value * |
d2e4a39e | 2311 | ada_value_ptr_subscript (struct value *arr, struct type *type, int arity, |
4c4b4cd2 | 2312 | struct value **ind) |
14f9c5c9 AS |
2313 | { |
2314 | int k; | |
2315 | ||
2316 | for (k = 0; k < arity; k += 1) | |
2317 | { | |
2318 | LONGEST lwb, upb; | |
14f9c5c9 AS |
2319 | |
2320 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY) | |
323e0a4a | 2321 | error (_("too many subscripts (%d expected)"), k); |
d2e4a39e | 2322 | arr = value_cast (lookup_pointer_type (TYPE_TARGET_TYPE (type)), |
4c4b4cd2 | 2323 | value_copy (arr)); |
14f9c5c9 | 2324 | get_discrete_bounds (TYPE_INDEX_TYPE (type), &lwb, &upb); |
2497b498 | 2325 | arr = value_ptradd (arr, pos_atr (ind[k]) - lwb); |
14f9c5c9 AS |
2326 | type = TYPE_TARGET_TYPE (type); |
2327 | } | |
2328 | ||
2329 | return value_ind (arr); | |
2330 | } | |
2331 | ||
0b5d8877 | 2332 | /* Given that ARRAY_PTR is a pointer or reference to an array of type TYPE (the |
f5938064 JG |
2333 | actual type of ARRAY_PTR is ignored), returns the Ada slice of HIGH-LOW+1 |
2334 | elements starting at index LOW. The lower bound of this array is LOW, as | |
2335 | per Ada rules. */ | |
0b5d8877 | 2336 | static struct value * |
f5938064 JG |
2337 | ada_value_slice_from_ptr (struct value *array_ptr, struct type *type, |
2338 | int low, int high) | |
0b5d8877 | 2339 | { |
6c038f32 | 2340 | CORE_ADDR base = value_as_address (array_ptr) |
0b5d8877 PH |
2341 | + ((low - TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type))) |
2342 | * TYPE_LENGTH (TYPE_TARGET_TYPE (type))); | |
6c038f32 PH |
2343 | struct type *index_type = |
2344 | create_range_type (NULL, TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (type)), | |
0b5d8877 | 2345 | low, high); |
6c038f32 | 2346 | struct type *slice_type = |
0b5d8877 | 2347 | create_array_type (NULL, TYPE_TARGET_TYPE (type), index_type); |
f5938064 | 2348 | return value_at_lazy (slice_type, base); |
0b5d8877 PH |
2349 | } |
2350 | ||
2351 | ||
2352 | static struct value * | |
2353 | ada_value_slice (struct value *array, int low, int high) | |
2354 | { | |
df407dfe | 2355 | struct type *type = value_type (array); |
6c038f32 | 2356 | struct type *index_type = |
0b5d8877 | 2357 | create_range_type (NULL, TYPE_INDEX_TYPE (type), low, high); |
6c038f32 | 2358 | struct type *slice_type = |
0b5d8877 | 2359 | create_array_type (NULL, TYPE_TARGET_TYPE (type), index_type); |
6c038f32 | 2360 | return value_cast (slice_type, value_slice (array, low, high - low + 1)); |
0b5d8877 PH |
2361 | } |
2362 | ||
14f9c5c9 AS |
2363 | /* If type is a record type in the form of a standard GNAT array |
2364 | descriptor, returns the number of dimensions for type. If arr is a | |
2365 | simple array, returns the number of "array of"s that prefix its | |
4c4b4cd2 | 2366 | type designation. Otherwise, returns 0. */ |
14f9c5c9 AS |
2367 | |
2368 | int | |
d2e4a39e | 2369 | ada_array_arity (struct type *type) |
14f9c5c9 AS |
2370 | { |
2371 | int arity; | |
2372 | ||
2373 | if (type == NULL) | |
2374 | return 0; | |
2375 | ||
2376 | type = desc_base_type (type); | |
2377 | ||
2378 | arity = 0; | |
d2e4a39e | 2379 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
14f9c5c9 | 2380 | return desc_arity (desc_bounds_type (type)); |
d2e4a39e AS |
2381 | else |
2382 | while (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
14f9c5c9 | 2383 | { |
4c4b4cd2 | 2384 | arity += 1; |
61ee279c | 2385 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
14f9c5c9 | 2386 | } |
d2e4a39e | 2387 | |
14f9c5c9 AS |
2388 | return arity; |
2389 | } | |
2390 | ||
2391 | /* If TYPE is a record type in the form of a standard GNAT array | |
2392 | descriptor or a simple array type, returns the element type for | |
2393 | TYPE after indexing by NINDICES indices, or by all indices if | |
4c4b4cd2 | 2394 | NINDICES is -1. Otherwise, returns NULL. */ |
14f9c5c9 | 2395 | |
d2e4a39e AS |
2396 | struct type * |
2397 | ada_array_element_type (struct type *type, int nindices) | |
14f9c5c9 AS |
2398 | { |
2399 | type = desc_base_type (type); | |
2400 | ||
d2e4a39e | 2401 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
14f9c5c9 AS |
2402 | { |
2403 | int k; | |
d2e4a39e | 2404 | struct type *p_array_type; |
14f9c5c9 | 2405 | |
556bdfd4 | 2406 | p_array_type = desc_data_target_type (type); |
14f9c5c9 AS |
2407 | |
2408 | k = ada_array_arity (type); | |
2409 | if (k == 0) | |
4c4b4cd2 | 2410 | return NULL; |
d2e4a39e | 2411 | |
4c4b4cd2 | 2412 | /* Initially p_array_type = elt_type(*)[]...(k times)...[]. */ |
14f9c5c9 | 2413 | if (nindices >= 0 && k > nindices) |
4c4b4cd2 | 2414 | k = nindices; |
d2e4a39e | 2415 | while (k > 0 && p_array_type != NULL) |
4c4b4cd2 | 2416 | { |
61ee279c | 2417 | p_array_type = ada_check_typedef (TYPE_TARGET_TYPE (p_array_type)); |
4c4b4cd2 PH |
2418 | k -= 1; |
2419 | } | |
14f9c5c9 AS |
2420 | return p_array_type; |
2421 | } | |
2422 | else if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
2423 | { | |
2424 | while (nindices != 0 && TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
4c4b4cd2 PH |
2425 | { |
2426 | type = TYPE_TARGET_TYPE (type); | |
2427 | nindices -= 1; | |
2428 | } | |
14f9c5c9 AS |
2429 | return type; |
2430 | } | |
2431 | ||
2432 | return NULL; | |
2433 | } | |
2434 | ||
4c4b4cd2 | 2435 | /* The type of nth index in arrays of given type (n numbering from 1). |
dd19d49e UW |
2436 | Does not examine memory. Throws an error if N is invalid or TYPE |
2437 | is not an array type. NAME is the name of the Ada attribute being | |
2438 | evaluated ('range, 'first, 'last, or 'length); it is used in building | |
2439 | the error message. */ | |
14f9c5c9 | 2440 | |
1eea4ebd UW |
2441 | static struct type * |
2442 | ada_index_type (struct type *type, int n, const char *name) | |
14f9c5c9 | 2443 | { |
4c4b4cd2 PH |
2444 | struct type *result_type; |
2445 | ||
14f9c5c9 AS |
2446 | type = desc_base_type (type); |
2447 | ||
1eea4ebd UW |
2448 | if (n < 0 || n > ada_array_arity (type)) |
2449 | error (_("invalid dimension number to '%s"), name); | |
14f9c5c9 | 2450 | |
4c4b4cd2 | 2451 | if (ada_is_simple_array_type (type)) |
14f9c5c9 AS |
2452 | { |
2453 | int i; | |
2454 | ||
2455 | for (i = 1; i < n; i += 1) | |
4c4b4cd2 | 2456 | type = TYPE_TARGET_TYPE (type); |
262452ec | 2457 | result_type = TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (type)); |
4c4b4cd2 PH |
2458 | /* FIXME: The stabs type r(0,0);bound;bound in an array type |
2459 | has a target type of TYPE_CODE_UNDEF. We compensate here, but | |
76a01679 | 2460 | perhaps stabsread.c would make more sense. */ |
1eea4ebd UW |
2461 | if (result_type && TYPE_CODE (result_type) == TYPE_CODE_UNDEF) |
2462 | result_type = NULL; | |
14f9c5c9 | 2463 | } |
d2e4a39e | 2464 | else |
1eea4ebd UW |
2465 | { |
2466 | result_type = desc_index_type (desc_bounds_type (type), n); | |
2467 | if (result_type == NULL) | |
2468 | error (_("attempt to take bound of something that is not an array")); | |
2469 | } | |
2470 | ||
2471 | return result_type; | |
14f9c5c9 AS |
2472 | } |
2473 | ||
2474 | /* Given that arr is an array type, returns the lower bound of the | |
2475 | Nth index (numbering from 1) if WHICH is 0, and the upper bound if | |
4c4b4cd2 | 2476 | WHICH is 1. This returns bounds 0 .. -1 if ARR_TYPE is an |
1eea4ebd UW |
2477 | array-descriptor type. It works for other arrays with bounds supplied |
2478 | by run-time quantities other than discriminants. */ | |
14f9c5c9 | 2479 | |
abb68b3e | 2480 | static LONGEST |
1eea4ebd | 2481 | ada_array_bound_from_type (struct type * arr_type, int n, int which) |
14f9c5c9 | 2482 | { |
1ce677a4 | 2483 | struct type *type, *elt_type, *index_type_desc, *index_type; |
262452ec | 2484 | LONGEST retval; |
1ce677a4 | 2485 | int i; |
262452ec JK |
2486 | |
2487 | gdb_assert (which == 0 || which == 1); | |
14f9c5c9 AS |
2488 | |
2489 | if (ada_is_packed_array_type (arr_type)) | |
2490 | arr_type = decode_packed_array_type (arr_type); | |
2491 | ||
4c4b4cd2 | 2492 | if (arr_type == NULL || !ada_is_simple_array_type (arr_type)) |
1eea4ebd | 2493 | return (LONGEST) - which; |
14f9c5c9 AS |
2494 | |
2495 | if (TYPE_CODE (arr_type) == TYPE_CODE_PTR) | |
2496 | type = TYPE_TARGET_TYPE (arr_type); | |
2497 | else | |
2498 | type = arr_type; | |
2499 | ||
1ce677a4 UW |
2500 | elt_type = type; |
2501 | for (i = n; i > 1; i--) | |
2502 | elt_type = TYPE_TARGET_TYPE (type); | |
2503 | ||
14f9c5c9 | 2504 | index_type_desc = ada_find_parallel_type (type, "___XA"); |
262452ec JK |
2505 | if (index_type_desc != NULL) |
2506 | index_type = to_fixed_range_type (TYPE_FIELD_NAME (index_type_desc, n - 1), | |
1ce677a4 | 2507 | NULL, TYPE_INDEX_TYPE (elt_type)); |
262452ec | 2508 | else |
1ce677a4 | 2509 | index_type = TYPE_INDEX_TYPE (elt_type); |
262452ec JK |
2510 | |
2511 | switch (TYPE_CODE (index_type)) | |
14f9c5c9 | 2512 | { |
262452ec JK |
2513 | case TYPE_CODE_RANGE: |
2514 | retval = which == 0 ? TYPE_LOW_BOUND (index_type) | |
2515 | : TYPE_HIGH_BOUND (index_type); | |
2516 | break; | |
2517 | case TYPE_CODE_ENUM: | |
2518 | retval = which == 0 ? TYPE_FIELD_BITPOS (index_type, 0) | |
2519 | : TYPE_FIELD_BITPOS (index_type, | |
2520 | TYPE_NFIELDS (index_type) - 1); | |
2521 | break; | |
2522 | default: | |
2523 | internal_error (__FILE__, __LINE__, _("invalid type code of index type")); | |
2524 | } | |
abb68b3e | 2525 | |
262452ec | 2526 | return retval; |
14f9c5c9 AS |
2527 | } |
2528 | ||
2529 | /* Given that arr is an array value, returns the lower bound of the | |
abb68b3e JB |
2530 | nth index (numbering from 1) if WHICH is 0, and the upper bound if |
2531 | WHICH is 1. This routine will also work for arrays with bounds | |
4c4b4cd2 | 2532 | supplied by run-time quantities other than discriminants. */ |
14f9c5c9 | 2533 | |
1eea4ebd | 2534 | static LONGEST |
4dc81987 | 2535 | ada_array_bound (struct value *arr, int n, int which) |
14f9c5c9 | 2536 | { |
df407dfe | 2537 | struct type *arr_type = value_type (arr); |
14f9c5c9 AS |
2538 | |
2539 | if (ada_is_packed_array_type (arr_type)) | |
2540 | return ada_array_bound (decode_packed_array (arr), n, which); | |
4c4b4cd2 | 2541 | else if (ada_is_simple_array_type (arr_type)) |
1eea4ebd | 2542 | return ada_array_bound_from_type (arr_type, n, which); |
14f9c5c9 | 2543 | else |
1eea4ebd | 2544 | return value_as_long (desc_one_bound (desc_bounds (arr), n, which)); |
14f9c5c9 AS |
2545 | } |
2546 | ||
2547 | /* Given that arr is an array value, returns the length of the | |
2548 | nth index. This routine will also work for arrays with bounds | |
4c4b4cd2 PH |
2549 | supplied by run-time quantities other than discriminants. |
2550 | Does not work for arrays indexed by enumeration types with representation | |
2551 | clauses at the moment. */ | |
14f9c5c9 | 2552 | |
1eea4ebd | 2553 | static LONGEST |
d2e4a39e | 2554 | ada_array_length (struct value *arr, int n) |
14f9c5c9 | 2555 | { |
df407dfe | 2556 | struct type *arr_type = ada_check_typedef (value_type (arr)); |
14f9c5c9 AS |
2557 | |
2558 | if (ada_is_packed_array_type (arr_type)) | |
2559 | return ada_array_length (decode_packed_array (arr), n); | |
2560 | ||
4c4b4cd2 | 2561 | if (ada_is_simple_array_type (arr_type)) |
1eea4ebd UW |
2562 | return (ada_array_bound_from_type (arr_type, n, 1) |
2563 | - ada_array_bound_from_type (arr_type, n, 0) + 1); | |
14f9c5c9 | 2564 | else |
1eea4ebd UW |
2565 | return (value_as_long (desc_one_bound (desc_bounds (arr), n, 1)) |
2566 | - value_as_long (desc_one_bound (desc_bounds (arr), n, 0)) + 1); | |
4c4b4cd2 PH |
2567 | } |
2568 | ||
2569 | /* An empty array whose type is that of ARR_TYPE (an array type), | |
2570 | with bounds LOW to LOW-1. */ | |
2571 | ||
2572 | static struct value * | |
2573 | empty_array (struct type *arr_type, int low) | |
2574 | { | |
6c038f32 | 2575 | struct type *index_type = |
0b5d8877 PH |
2576 | create_range_type (NULL, TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (arr_type)), |
2577 | low, low - 1); | |
2578 | struct type *elt_type = ada_array_element_type (arr_type, 1); | |
2579 | return allocate_value (create_array_type (NULL, elt_type, index_type)); | |
14f9c5c9 | 2580 | } |
14f9c5c9 | 2581 | \f |
d2e4a39e | 2582 | |
4c4b4cd2 | 2583 | /* Name resolution */ |
14f9c5c9 | 2584 | |
4c4b4cd2 PH |
2585 | /* The "decoded" name for the user-definable Ada operator corresponding |
2586 | to OP. */ | |
14f9c5c9 | 2587 | |
d2e4a39e | 2588 | static const char * |
4c4b4cd2 | 2589 | ada_decoded_op_name (enum exp_opcode op) |
14f9c5c9 AS |
2590 | { |
2591 | int i; | |
2592 | ||
4c4b4cd2 | 2593 | for (i = 0; ada_opname_table[i].encoded != NULL; i += 1) |
14f9c5c9 AS |
2594 | { |
2595 | if (ada_opname_table[i].op == op) | |
4c4b4cd2 | 2596 | return ada_opname_table[i].decoded; |
14f9c5c9 | 2597 | } |
323e0a4a | 2598 | error (_("Could not find operator name for opcode")); |
14f9c5c9 AS |
2599 | } |
2600 | ||
2601 | ||
4c4b4cd2 PH |
2602 | /* Same as evaluate_type (*EXP), but resolves ambiguous symbol |
2603 | references (marked by OP_VAR_VALUE nodes in which the symbol has an | |
2604 | undefined namespace) and converts operators that are | |
2605 | user-defined into appropriate function calls. If CONTEXT_TYPE is | |
14f9c5c9 AS |
2606 | non-null, it provides a preferred result type [at the moment, only |
2607 | type void has any effect---causing procedures to be preferred over | |
2608 | functions in calls]. A null CONTEXT_TYPE indicates that a non-void | |
4c4b4cd2 | 2609 | return type is preferred. May change (expand) *EXP. */ |
14f9c5c9 | 2610 | |
4c4b4cd2 PH |
2611 | static void |
2612 | resolve (struct expression **expp, int void_context_p) | |
14f9c5c9 | 2613 | { |
30b15541 UW |
2614 | struct type *context_type = NULL; |
2615 | int pc = 0; | |
2616 | ||
2617 | if (void_context_p) | |
2618 | context_type = builtin_type ((*expp)->gdbarch)->builtin_void; | |
2619 | ||
2620 | resolve_subexp (expp, &pc, 1, context_type); | |
14f9c5c9 AS |
2621 | } |
2622 | ||
4c4b4cd2 PH |
2623 | /* Resolve the operator of the subexpression beginning at |
2624 | position *POS of *EXPP. "Resolving" consists of replacing | |
2625 | the symbols that have undefined namespaces in OP_VAR_VALUE nodes | |
2626 | with their resolutions, replacing built-in operators with | |
2627 | function calls to user-defined operators, where appropriate, and, | |
2628 | when DEPROCEDURE_P is non-zero, converting function-valued variables | |
2629 | into parameterless calls. May expand *EXPP. The CONTEXT_TYPE functions | |
2630 | are as in ada_resolve, above. */ | |
14f9c5c9 | 2631 | |
d2e4a39e | 2632 | static struct value * |
4c4b4cd2 | 2633 | resolve_subexp (struct expression **expp, int *pos, int deprocedure_p, |
76a01679 | 2634 | struct type *context_type) |
14f9c5c9 AS |
2635 | { |
2636 | int pc = *pos; | |
2637 | int i; | |
4c4b4cd2 | 2638 | struct expression *exp; /* Convenience: == *expp. */ |
14f9c5c9 | 2639 | enum exp_opcode op = (*expp)->elts[pc].opcode; |
4c4b4cd2 PH |
2640 | struct value **argvec; /* Vector of operand types (alloca'ed). */ |
2641 | int nargs; /* Number of operands. */ | |
52ce6436 | 2642 | int oplen; |
14f9c5c9 AS |
2643 | |
2644 | argvec = NULL; | |
2645 | nargs = 0; | |
2646 | exp = *expp; | |
2647 | ||
52ce6436 PH |
2648 | /* Pass one: resolve operands, saving their types and updating *pos, |
2649 | if needed. */ | |
14f9c5c9 AS |
2650 | switch (op) |
2651 | { | |
4c4b4cd2 PH |
2652 | case OP_FUNCALL: |
2653 | if (exp->elts[pc + 3].opcode == OP_VAR_VALUE | |
76a01679 JB |
2654 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
2655 | *pos += 7; | |
4c4b4cd2 PH |
2656 | else |
2657 | { | |
2658 | *pos += 3; | |
2659 | resolve_subexp (expp, pos, 0, NULL); | |
2660 | } | |
2661 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
14f9c5c9 AS |
2662 | break; |
2663 | ||
14f9c5c9 | 2664 | case UNOP_ADDR: |
4c4b4cd2 PH |
2665 | *pos += 1; |
2666 | resolve_subexp (expp, pos, 0, NULL); | |
2667 | break; | |
2668 | ||
52ce6436 PH |
2669 | case UNOP_QUAL: |
2670 | *pos += 3; | |
17466c1a | 2671 | resolve_subexp (expp, pos, 1, check_typedef (exp->elts[pc + 1].type)); |
4c4b4cd2 PH |
2672 | break; |
2673 | ||
52ce6436 | 2674 | case OP_ATR_MODULUS: |
4c4b4cd2 PH |
2675 | case OP_ATR_SIZE: |
2676 | case OP_ATR_TAG: | |
4c4b4cd2 PH |
2677 | case OP_ATR_FIRST: |
2678 | case OP_ATR_LAST: | |
2679 | case OP_ATR_LENGTH: | |
2680 | case OP_ATR_POS: | |
2681 | case OP_ATR_VAL: | |
4c4b4cd2 PH |
2682 | case OP_ATR_MIN: |
2683 | case OP_ATR_MAX: | |
52ce6436 PH |
2684 | case TERNOP_IN_RANGE: |
2685 | case BINOP_IN_BOUNDS: | |
2686 | case UNOP_IN_RANGE: | |
2687 | case OP_AGGREGATE: | |
2688 | case OP_OTHERS: | |
2689 | case OP_CHOICES: | |
2690 | case OP_POSITIONAL: | |
2691 | case OP_DISCRETE_RANGE: | |
2692 | case OP_NAME: | |
2693 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
2694 | *pos += oplen; | |
14f9c5c9 AS |
2695 | break; |
2696 | ||
2697 | case BINOP_ASSIGN: | |
2698 | { | |
4c4b4cd2 PH |
2699 | struct value *arg1; |
2700 | ||
2701 | *pos += 1; | |
2702 | arg1 = resolve_subexp (expp, pos, 0, NULL); | |
2703 | if (arg1 == NULL) | |
2704 | resolve_subexp (expp, pos, 1, NULL); | |
2705 | else | |
df407dfe | 2706 | resolve_subexp (expp, pos, 1, value_type (arg1)); |
4c4b4cd2 | 2707 | break; |
14f9c5c9 AS |
2708 | } |
2709 | ||
4c4b4cd2 | 2710 | case UNOP_CAST: |
4c4b4cd2 PH |
2711 | *pos += 3; |
2712 | nargs = 1; | |
2713 | break; | |
14f9c5c9 | 2714 | |
4c4b4cd2 PH |
2715 | case BINOP_ADD: |
2716 | case BINOP_SUB: | |
2717 | case BINOP_MUL: | |
2718 | case BINOP_DIV: | |
2719 | case BINOP_REM: | |
2720 | case BINOP_MOD: | |
2721 | case BINOP_EXP: | |
2722 | case BINOP_CONCAT: | |
2723 | case BINOP_LOGICAL_AND: | |
2724 | case BINOP_LOGICAL_OR: | |
2725 | case BINOP_BITWISE_AND: | |
2726 | case BINOP_BITWISE_IOR: | |
2727 | case BINOP_BITWISE_XOR: | |
14f9c5c9 | 2728 | |
4c4b4cd2 PH |
2729 | case BINOP_EQUAL: |
2730 | case BINOP_NOTEQUAL: | |
2731 | case BINOP_LESS: | |
2732 | case BINOP_GTR: | |
2733 | case BINOP_LEQ: | |
2734 | case BINOP_GEQ: | |
14f9c5c9 | 2735 | |
4c4b4cd2 PH |
2736 | case BINOP_REPEAT: |
2737 | case BINOP_SUBSCRIPT: | |
2738 | case BINOP_COMMA: | |
40c8aaa9 JB |
2739 | *pos += 1; |
2740 | nargs = 2; | |
2741 | break; | |
14f9c5c9 | 2742 | |
4c4b4cd2 PH |
2743 | case UNOP_NEG: |
2744 | case UNOP_PLUS: | |
2745 | case UNOP_LOGICAL_NOT: | |
2746 | case UNOP_ABS: | |
2747 | case UNOP_IND: | |
2748 | *pos += 1; | |
2749 | nargs = 1; | |
2750 | break; | |
14f9c5c9 | 2751 | |
4c4b4cd2 PH |
2752 | case OP_LONG: |
2753 | case OP_DOUBLE: | |
2754 | case OP_VAR_VALUE: | |
2755 | *pos += 4; | |
2756 | break; | |
14f9c5c9 | 2757 | |
4c4b4cd2 PH |
2758 | case OP_TYPE: |
2759 | case OP_BOOL: | |
2760 | case OP_LAST: | |
4c4b4cd2 PH |
2761 | case OP_INTERNALVAR: |
2762 | *pos += 3; | |
2763 | break; | |
14f9c5c9 | 2764 | |
4c4b4cd2 PH |
2765 | case UNOP_MEMVAL: |
2766 | *pos += 3; | |
2767 | nargs = 1; | |
2768 | break; | |
2769 | ||
67f3407f DJ |
2770 | case OP_REGISTER: |
2771 | *pos += 4 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1); | |
2772 | break; | |
2773 | ||
4c4b4cd2 PH |
2774 | case STRUCTOP_STRUCT: |
2775 | *pos += 4 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1); | |
2776 | nargs = 1; | |
2777 | break; | |
2778 | ||
4c4b4cd2 | 2779 | case TERNOP_SLICE: |
4c4b4cd2 PH |
2780 | *pos += 1; |
2781 | nargs = 3; | |
2782 | break; | |
2783 | ||
52ce6436 | 2784 | case OP_STRING: |
14f9c5c9 | 2785 | break; |
4c4b4cd2 PH |
2786 | |
2787 | default: | |
323e0a4a | 2788 | error (_("Unexpected operator during name resolution")); |
14f9c5c9 AS |
2789 | } |
2790 | ||
76a01679 | 2791 | argvec = (struct value * *) alloca (sizeof (struct value *) * (nargs + 1)); |
4c4b4cd2 PH |
2792 | for (i = 0; i < nargs; i += 1) |
2793 | argvec[i] = resolve_subexp (expp, pos, 1, NULL); | |
2794 | argvec[i] = NULL; | |
2795 | exp = *expp; | |
2796 | ||
2797 | /* Pass two: perform any resolution on principal operator. */ | |
14f9c5c9 AS |
2798 | switch (op) |
2799 | { | |
2800 | default: | |
2801 | break; | |
2802 | ||
14f9c5c9 | 2803 | case OP_VAR_VALUE: |
4c4b4cd2 | 2804 | if (SYMBOL_DOMAIN (exp->elts[pc + 2].symbol) == UNDEF_DOMAIN) |
76a01679 JB |
2805 | { |
2806 | struct ada_symbol_info *candidates; | |
2807 | int n_candidates; | |
2808 | ||
2809 | n_candidates = | |
2810 | ada_lookup_symbol_list (SYMBOL_LINKAGE_NAME | |
2811 | (exp->elts[pc + 2].symbol), | |
2812 | exp->elts[pc + 1].block, VAR_DOMAIN, | |
2813 | &candidates); | |
2814 | ||
2815 | if (n_candidates > 1) | |
2816 | { | |
2817 | /* Types tend to get re-introduced locally, so if there | |
2818 | are any local symbols that are not types, first filter | |
2819 | out all types. */ | |
2820 | int j; | |
2821 | for (j = 0; j < n_candidates; j += 1) | |
2822 | switch (SYMBOL_CLASS (candidates[j].sym)) | |
2823 | { | |
2824 | case LOC_REGISTER: | |
2825 | case LOC_ARG: | |
2826 | case LOC_REF_ARG: | |
76a01679 JB |
2827 | case LOC_REGPARM_ADDR: |
2828 | case LOC_LOCAL: | |
76a01679 | 2829 | case LOC_COMPUTED: |
76a01679 JB |
2830 | goto FoundNonType; |
2831 | default: | |
2832 | break; | |
2833 | } | |
2834 | FoundNonType: | |
2835 | if (j < n_candidates) | |
2836 | { | |
2837 | j = 0; | |
2838 | while (j < n_candidates) | |
2839 | { | |
2840 | if (SYMBOL_CLASS (candidates[j].sym) == LOC_TYPEDEF) | |
2841 | { | |
2842 | candidates[j] = candidates[n_candidates - 1]; | |
2843 | n_candidates -= 1; | |
2844 | } | |
2845 | else | |
2846 | j += 1; | |
2847 | } | |
2848 | } | |
2849 | } | |
2850 | ||
2851 | if (n_candidates == 0) | |
323e0a4a | 2852 | error (_("No definition found for %s"), |
76a01679 JB |
2853 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
2854 | else if (n_candidates == 1) | |
2855 | i = 0; | |
2856 | else if (deprocedure_p | |
2857 | && !is_nonfunction (candidates, n_candidates)) | |
2858 | { | |
06d5cf63 JB |
2859 | i = ada_resolve_function |
2860 | (candidates, n_candidates, NULL, 0, | |
2861 | SYMBOL_LINKAGE_NAME (exp->elts[pc + 2].symbol), | |
2862 | context_type); | |
76a01679 | 2863 | if (i < 0) |
323e0a4a | 2864 | error (_("Could not find a match for %s"), |
76a01679 JB |
2865 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
2866 | } | |
2867 | else | |
2868 | { | |
323e0a4a | 2869 | printf_filtered (_("Multiple matches for %s\n"), |
76a01679 JB |
2870 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
2871 | user_select_syms (candidates, n_candidates, 1); | |
2872 | i = 0; | |
2873 | } | |
2874 | ||
2875 | exp->elts[pc + 1].block = candidates[i].block; | |
2876 | exp->elts[pc + 2].symbol = candidates[i].sym; | |
1265e4aa JB |
2877 | if (innermost_block == NULL |
2878 | || contained_in (candidates[i].block, innermost_block)) | |
76a01679 JB |
2879 | innermost_block = candidates[i].block; |
2880 | } | |
2881 | ||
2882 | if (deprocedure_p | |
2883 | && (TYPE_CODE (SYMBOL_TYPE (exp->elts[pc + 2].symbol)) | |
2884 | == TYPE_CODE_FUNC)) | |
2885 | { | |
2886 | replace_operator_with_call (expp, pc, 0, 0, | |
2887 | exp->elts[pc + 2].symbol, | |
2888 | exp->elts[pc + 1].block); | |
2889 | exp = *expp; | |
2890 | } | |
14f9c5c9 AS |
2891 | break; |
2892 | ||
2893 | case OP_FUNCALL: | |
2894 | { | |
4c4b4cd2 | 2895 | if (exp->elts[pc + 3].opcode == OP_VAR_VALUE |
76a01679 | 2896 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
4c4b4cd2 PH |
2897 | { |
2898 | struct ada_symbol_info *candidates; | |
2899 | int n_candidates; | |
2900 | ||
2901 | n_candidates = | |
76a01679 JB |
2902 | ada_lookup_symbol_list (SYMBOL_LINKAGE_NAME |
2903 | (exp->elts[pc + 5].symbol), | |
2904 | exp->elts[pc + 4].block, VAR_DOMAIN, | |
2905 | &candidates); | |
4c4b4cd2 PH |
2906 | if (n_candidates == 1) |
2907 | i = 0; | |
2908 | else | |
2909 | { | |
06d5cf63 JB |
2910 | i = ada_resolve_function |
2911 | (candidates, n_candidates, | |
2912 | argvec, nargs, | |
2913 | SYMBOL_LINKAGE_NAME (exp->elts[pc + 5].symbol), | |
2914 | context_type); | |
4c4b4cd2 | 2915 | if (i < 0) |
323e0a4a | 2916 | error (_("Could not find a match for %s"), |
4c4b4cd2 PH |
2917 | SYMBOL_PRINT_NAME (exp->elts[pc + 5].symbol)); |
2918 | } | |
2919 | ||
2920 | exp->elts[pc + 4].block = candidates[i].block; | |
2921 | exp->elts[pc + 5].symbol = candidates[i].sym; | |
1265e4aa JB |
2922 | if (innermost_block == NULL |
2923 | || contained_in (candidates[i].block, innermost_block)) | |
4c4b4cd2 PH |
2924 | innermost_block = candidates[i].block; |
2925 | } | |
14f9c5c9 AS |
2926 | } |
2927 | break; | |
2928 | case BINOP_ADD: | |
2929 | case BINOP_SUB: | |
2930 | case BINOP_MUL: | |
2931 | case BINOP_DIV: | |
2932 | case BINOP_REM: | |
2933 | case BINOP_MOD: | |
2934 | case BINOP_CONCAT: | |
2935 | case BINOP_BITWISE_AND: | |
2936 | case BINOP_BITWISE_IOR: | |
2937 | case BINOP_BITWISE_XOR: | |
2938 | case BINOP_EQUAL: | |
2939 | case BINOP_NOTEQUAL: | |
2940 | case BINOP_LESS: | |
2941 | case BINOP_GTR: | |
2942 | case BINOP_LEQ: | |
2943 | case BINOP_GEQ: | |
2944 | case BINOP_EXP: | |
2945 | case UNOP_NEG: | |
2946 | case UNOP_PLUS: | |
2947 | case UNOP_LOGICAL_NOT: | |
2948 | case UNOP_ABS: | |
2949 | if (possible_user_operator_p (op, argvec)) | |
4c4b4cd2 PH |
2950 | { |
2951 | struct ada_symbol_info *candidates; | |
2952 | int n_candidates; | |
2953 | ||
2954 | n_candidates = | |
2955 | ada_lookup_symbol_list (ada_encode (ada_decoded_op_name (op)), | |
2956 | (struct block *) NULL, VAR_DOMAIN, | |
2957 | &candidates); | |
2958 | i = ada_resolve_function (candidates, n_candidates, argvec, nargs, | |
76a01679 | 2959 | ada_decoded_op_name (op), NULL); |
4c4b4cd2 PH |
2960 | if (i < 0) |
2961 | break; | |
2962 | ||
76a01679 JB |
2963 | replace_operator_with_call (expp, pc, nargs, 1, |
2964 | candidates[i].sym, candidates[i].block); | |
4c4b4cd2 PH |
2965 | exp = *expp; |
2966 | } | |
14f9c5c9 | 2967 | break; |
4c4b4cd2 PH |
2968 | |
2969 | case OP_TYPE: | |
b3dbf008 | 2970 | case OP_REGISTER: |
4c4b4cd2 | 2971 | return NULL; |
14f9c5c9 AS |
2972 | } |
2973 | ||
2974 | *pos = pc; | |
2975 | return evaluate_subexp_type (exp, pos); | |
2976 | } | |
2977 | ||
2978 | /* Return non-zero if formal type FTYPE matches actual type ATYPE. If | |
4c4b4cd2 PH |
2979 | MAY_DEREF is non-zero, the formal may be a pointer and the actual |
2980 | a non-pointer. A type of 'void' (which is never a valid expression type) | |
2981 | by convention matches anything. */ | |
14f9c5c9 | 2982 | /* The term "match" here is rather loose. The match is heuristic and |
4c4b4cd2 | 2983 | liberal. FIXME: TOO liberal, in fact. */ |
14f9c5c9 AS |
2984 | |
2985 | static int | |
4dc81987 | 2986 | ada_type_match (struct type *ftype, struct type *atype, int may_deref) |
14f9c5c9 | 2987 | { |
61ee279c PH |
2988 | ftype = ada_check_typedef (ftype); |
2989 | atype = ada_check_typedef (atype); | |
14f9c5c9 AS |
2990 | |
2991 | if (TYPE_CODE (ftype) == TYPE_CODE_REF) | |
2992 | ftype = TYPE_TARGET_TYPE (ftype); | |
2993 | if (TYPE_CODE (atype) == TYPE_CODE_REF) | |
2994 | atype = TYPE_TARGET_TYPE (atype); | |
2995 | ||
d2e4a39e | 2996 | if (TYPE_CODE (ftype) == TYPE_CODE_VOID |
14f9c5c9 AS |
2997 | || TYPE_CODE (atype) == TYPE_CODE_VOID) |
2998 | return 1; | |
2999 | ||
d2e4a39e | 3000 | switch (TYPE_CODE (ftype)) |
14f9c5c9 AS |
3001 | { |
3002 | default: | |
3003 | return 1; | |
3004 | case TYPE_CODE_PTR: | |
3005 | if (TYPE_CODE (atype) == TYPE_CODE_PTR) | |
4c4b4cd2 PH |
3006 | return ada_type_match (TYPE_TARGET_TYPE (ftype), |
3007 | TYPE_TARGET_TYPE (atype), 0); | |
d2e4a39e | 3008 | else |
1265e4aa JB |
3009 | return (may_deref |
3010 | && ada_type_match (TYPE_TARGET_TYPE (ftype), atype, 0)); | |
14f9c5c9 AS |
3011 | case TYPE_CODE_INT: |
3012 | case TYPE_CODE_ENUM: | |
3013 | case TYPE_CODE_RANGE: | |
3014 | switch (TYPE_CODE (atype)) | |
4c4b4cd2 PH |
3015 | { |
3016 | case TYPE_CODE_INT: | |
3017 | case TYPE_CODE_ENUM: | |
3018 | case TYPE_CODE_RANGE: | |
3019 | return 1; | |
3020 | default: | |
3021 | return 0; | |
3022 | } | |
14f9c5c9 AS |
3023 | |
3024 | case TYPE_CODE_ARRAY: | |
d2e4a39e | 3025 | return (TYPE_CODE (atype) == TYPE_CODE_ARRAY |
4c4b4cd2 | 3026 | || ada_is_array_descriptor_type (atype)); |
14f9c5c9 AS |
3027 | |
3028 | case TYPE_CODE_STRUCT: | |
4c4b4cd2 PH |
3029 | if (ada_is_array_descriptor_type (ftype)) |
3030 | return (TYPE_CODE (atype) == TYPE_CODE_ARRAY | |
3031 | || ada_is_array_descriptor_type (atype)); | |
14f9c5c9 | 3032 | else |
4c4b4cd2 PH |
3033 | return (TYPE_CODE (atype) == TYPE_CODE_STRUCT |
3034 | && !ada_is_array_descriptor_type (atype)); | |
14f9c5c9 AS |
3035 | |
3036 | case TYPE_CODE_UNION: | |
3037 | case TYPE_CODE_FLT: | |
3038 | return (TYPE_CODE (atype) == TYPE_CODE (ftype)); | |
3039 | } | |
3040 | } | |
3041 | ||
3042 | /* Return non-zero if the formals of FUNC "sufficiently match" the | |
3043 | vector of actual argument types ACTUALS of size N_ACTUALS. FUNC | |
3044 | may also be an enumeral, in which case it is treated as a 0- | |
4c4b4cd2 | 3045 | argument function. */ |
14f9c5c9 AS |
3046 | |
3047 | static int | |
d2e4a39e | 3048 | ada_args_match (struct symbol *func, struct value **actuals, int n_actuals) |
14f9c5c9 AS |
3049 | { |
3050 | int i; | |
d2e4a39e | 3051 | struct type *func_type = SYMBOL_TYPE (func); |
14f9c5c9 | 3052 | |
1265e4aa JB |
3053 | if (SYMBOL_CLASS (func) == LOC_CONST |
3054 | && TYPE_CODE (func_type) == TYPE_CODE_ENUM) | |
14f9c5c9 AS |
3055 | return (n_actuals == 0); |
3056 | else if (func_type == NULL || TYPE_CODE (func_type) != TYPE_CODE_FUNC) | |
3057 | return 0; | |
3058 | ||
3059 | if (TYPE_NFIELDS (func_type) != n_actuals) | |
3060 | return 0; | |
3061 | ||
3062 | for (i = 0; i < n_actuals; i += 1) | |
3063 | { | |
4c4b4cd2 | 3064 | if (actuals[i] == NULL) |
76a01679 JB |
3065 | return 0; |
3066 | else | |
3067 | { | |
61ee279c | 3068 | struct type *ftype = ada_check_typedef (TYPE_FIELD_TYPE (func_type, i)); |
df407dfe | 3069 | struct type *atype = ada_check_typedef (value_type (actuals[i])); |
4c4b4cd2 | 3070 | |
76a01679 JB |
3071 | if (!ada_type_match (ftype, atype, 1)) |
3072 | return 0; | |
3073 | } | |
14f9c5c9 AS |
3074 | } |
3075 | return 1; | |
3076 | } | |
3077 | ||
3078 | /* False iff function type FUNC_TYPE definitely does not produce a value | |
3079 | compatible with type CONTEXT_TYPE. Conservatively returns 1 if | |
3080 | FUNC_TYPE is not a valid function type with a non-null return type | |
3081 | or an enumerated type. A null CONTEXT_TYPE indicates any non-void type. */ | |
3082 | ||
3083 | static int | |
d2e4a39e | 3084 | return_match (struct type *func_type, struct type *context_type) |
14f9c5c9 | 3085 | { |
d2e4a39e | 3086 | struct type *return_type; |
14f9c5c9 AS |
3087 | |
3088 | if (func_type == NULL) | |
3089 | return 1; | |
3090 | ||
4c4b4cd2 PH |
3091 | if (TYPE_CODE (func_type) == TYPE_CODE_FUNC) |
3092 | return_type = base_type (TYPE_TARGET_TYPE (func_type)); | |
3093 | else | |
3094 | return_type = base_type (func_type); | |
14f9c5c9 AS |
3095 | if (return_type == NULL) |
3096 | return 1; | |
3097 | ||
4c4b4cd2 | 3098 | context_type = base_type (context_type); |
14f9c5c9 AS |
3099 | |
3100 | if (TYPE_CODE (return_type) == TYPE_CODE_ENUM) | |
3101 | return context_type == NULL || return_type == context_type; | |
3102 | else if (context_type == NULL) | |
3103 | return TYPE_CODE (return_type) != TYPE_CODE_VOID; | |
3104 | else | |
3105 | return TYPE_CODE (return_type) == TYPE_CODE (context_type); | |
3106 | } | |
3107 | ||
3108 | ||
4c4b4cd2 | 3109 | /* Returns the index in SYMS[0..NSYMS-1] that contains the symbol for the |
14f9c5c9 | 3110 | function (if any) that matches the types of the NARGS arguments in |
4c4b4cd2 PH |
3111 | ARGS. If CONTEXT_TYPE is non-null and there is at least one match |
3112 | that returns that type, then eliminate matches that don't. If | |
3113 | CONTEXT_TYPE is void and there is at least one match that does not | |
3114 | return void, eliminate all matches that do. | |
3115 | ||
14f9c5c9 AS |
3116 | Asks the user if there is more than one match remaining. Returns -1 |
3117 | if there is no such symbol or none is selected. NAME is used | |
4c4b4cd2 PH |
3118 | solely for messages. May re-arrange and modify SYMS in |
3119 | the process; the index returned is for the modified vector. */ | |
14f9c5c9 | 3120 | |
4c4b4cd2 PH |
3121 | static int |
3122 | ada_resolve_function (struct ada_symbol_info syms[], | |
3123 | int nsyms, struct value **args, int nargs, | |
3124 | const char *name, struct type *context_type) | |
14f9c5c9 | 3125 | { |
30b15541 | 3126 | int fallback; |
14f9c5c9 | 3127 | int k; |
4c4b4cd2 | 3128 | int m; /* Number of hits */ |
14f9c5c9 | 3129 | |
d2e4a39e | 3130 | m = 0; |
30b15541 UW |
3131 | /* In the first pass of the loop, we only accept functions matching |
3132 | context_type. If none are found, we add a second pass of the loop | |
3133 | where every function is accepted. */ | |
3134 | for (fallback = 0; m == 0 && fallback < 2; fallback++) | |
14f9c5c9 AS |
3135 | { |
3136 | for (k = 0; k < nsyms; k += 1) | |
4c4b4cd2 | 3137 | { |
61ee279c | 3138 | struct type *type = ada_check_typedef (SYMBOL_TYPE (syms[k].sym)); |
4c4b4cd2 PH |
3139 | |
3140 | if (ada_args_match (syms[k].sym, args, nargs) | |
30b15541 | 3141 | && (fallback || return_match (type, context_type))) |
4c4b4cd2 PH |
3142 | { |
3143 | syms[m] = syms[k]; | |
3144 | m += 1; | |
3145 | } | |
3146 | } | |
14f9c5c9 AS |
3147 | } |
3148 | ||
3149 | if (m == 0) | |
3150 | return -1; | |
3151 | else if (m > 1) | |
3152 | { | |
323e0a4a | 3153 | printf_filtered (_("Multiple matches for %s\n"), name); |
4c4b4cd2 | 3154 | user_select_syms (syms, m, 1); |
14f9c5c9 AS |
3155 | return 0; |
3156 | } | |
3157 | return 0; | |
3158 | } | |
3159 | ||
4c4b4cd2 PH |
3160 | /* Returns true (non-zero) iff decoded name N0 should appear before N1 |
3161 | in a listing of choices during disambiguation (see sort_choices, below). | |
3162 | The idea is that overloadings of a subprogram name from the | |
3163 | same package should sort in their source order. We settle for ordering | |
3164 | such symbols by their trailing number (__N or $N). */ | |
3165 | ||
14f9c5c9 | 3166 | static int |
4c4b4cd2 | 3167 | encoded_ordered_before (char *N0, char *N1) |
14f9c5c9 AS |
3168 | { |
3169 | if (N1 == NULL) | |
3170 | return 0; | |
3171 | else if (N0 == NULL) | |
3172 | return 1; | |
3173 | else | |
3174 | { | |
3175 | int k0, k1; | |
d2e4a39e | 3176 | for (k0 = strlen (N0) - 1; k0 > 0 && isdigit (N0[k0]); k0 -= 1) |
4c4b4cd2 | 3177 | ; |
d2e4a39e | 3178 | for (k1 = strlen (N1) - 1; k1 > 0 && isdigit (N1[k1]); k1 -= 1) |
4c4b4cd2 | 3179 | ; |
d2e4a39e | 3180 | if ((N0[k0] == '_' || N0[k0] == '$') && N0[k0 + 1] != '\000' |
4c4b4cd2 PH |
3181 | && (N1[k1] == '_' || N1[k1] == '$') && N1[k1 + 1] != '\000') |
3182 | { | |
3183 | int n0, n1; | |
3184 | n0 = k0; | |
3185 | while (N0[n0] == '_' && n0 > 0 && N0[n0 - 1] == '_') | |
3186 | n0 -= 1; | |
3187 | n1 = k1; | |
3188 | while (N1[n1] == '_' && n1 > 0 && N1[n1 - 1] == '_') | |
3189 | n1 -= 1; | |
3190 | if (n0 == n1 && strncmp (N0, N1, n0) == 0) | |
3191 | return (atoi (N0 + k0 + 1) < atoi (N1 + k1 + 1)); | |
3192 | } | |
14f9c5c9 AS |
3193 | return (strcmp (N0, N1) < 0); |
3194 | } | |
3195 | } | |
d2e4a39e | 3196 | |
4c4b4cd2 PH |
3197 | /* Sort SYMS[0..NSYMS-1] to put the choices in a canonical order by the |
3198 | encoded names. */ | |
3199 | ||
d2e4a39e | 3200 | static void |
4c4b4cd2 | 3201 | sort_choices (struct ada_symbol_info syms[], int nsyms) |
14f9c5c9 | 3202 | { |
4c4b4cd2 | 3203 | int i; |
d2e4a39e | 3204 | for (i = 1; i < nsyms; i += 1) |
14f9c5c9 | 3205 | { |
4c4b4cd2 | 3206 | struct ada_symbol_info sym = syms[i]; |
14f9c5c9 AS |
3207 | int j; |
3208 | ||
d2e4a39e | 3209 | for (j = i - 1; j >= 0; j -= 1) |
4c4b4cd2 PH |
3210 | { |
3211 | if (encoded_ordered_before (SYMBOL_LINKAGE_NAME (syms[j].sym), | |
3212 | SYMBOL_LINKAGE_NAME (sym.sym))) | |
3213 | break; | |
3214 | syms[j + 1] = syms[j]; | |
3215 | } | |
d2e4a39e | 3216 | syms[j + 1] = sym; |
14f9c5c9 AS |
3217 | } |
3218 | } | |
3219 | ||
4c4b4cd2 PH |
3220 | /* Given a list of NSYMS symbols in SYMS, select up to MAX_RESULTS>0 |
3221 | by asking the user (if necessary), returning the number selected, | |
3222 | and setting the first elements of SYMS items. Error if no symbols | |
3223 | selected. */ | |
14f9c5c9 AS |
3224 | |
3225 | /* NOTE: Adapted from decode_line_2 in symtab.c, with which it ought | |
4c4b4cd2 | 3226 | to be re-integrated one of these days. */ |
14f9c5c9 AS |
3227 | |
3228 | int | |
4c4b4cd2 | 3229 | user_select_syms (struct ada_symbol_info *syms, int nsyms, int max_results) |
14f9c5c9 AS |
3230 | { |
3231 | int i; | |
d2e4a39e | 3232 | int *chosen = (int *) alloca (sizeof (int) * nsyms); |
14f9c5c9 AS |
3233 | int n_chosen; |
3234 | int first_choice = (max_results == 1) ? 1 : 2; | |
717d2f5a | 3235 | const char *select_mode = multiple_symbols_select_mode (); |
14f9c5c9 AS |
3236 | |
3237 | if (max_results < 1) | |
323e0a4a | 3238 | error (_("Request to select 0 symbols!")); |
14f9c5c9 AS |
3239 | if (nsyms <= 1) |
3240 | return nsyms; | |
3241 | ||
717d2f5a JB |
3242 | if (select_mode == multiple_symbols_cancel) |
3243 | error (_("\ | |
3244 | canceled because the command is ambiguous\n\ | |
3245 | See set/show multiple-symbol.")); | |
3246 | ||
3247 | /* If select_mode is "all", then return all possible symbols. | |
3248 | Only do that if more than one symbol can be selected, of course. | |
3249 | Otherwise, display the menu as usual. */ | |
3250 | if (select_mode == multiple_symbols_all && max_results > 1) | |
3251 | return nsyms; | |
3252 | ||
323e0a4a | 3253 | printf_unfiltered (_("[0] cancel\n")); |
14f9c5c9 | 3254 | if (max_results > 1) |
323e0a4a | 3255 | printf_unfiltered (_("[1] all\n")); |
14f9c5c9 | 3256 | |
4c4b4cd2 | 3257 | sort_choices (syms, nsyms); |
14f9c5c9 AS |
3258 | |
3259 | for (i = 0; i < nsyms; i += 1) | |
3260 | { | |
4c4b4cd2 PH |
3261 | if (syms[i].sym == NULL) |
3262 | continue; | |
3263 | ||
3264 | if (SYMBOL_CLASS (syms[i].sym) == LOC_BLOCK) | |
3265 | { | |
76a01679 JB |
3266 | struct symtab_and_line sal = |
3267 | find_function_start_sal (syms[i].sym, 1); | |
323e0a4a AC |
3268 | if (sal.symtab == NULL) |
3269 | printf_unfiltered (_("[%d] %s at <no source file available>:%d\n"), | |
3270 | i + first_choice, | |
3271 | SYMBOL_PRINT_NAME (syms[i].sym), | |
3272 | sal.line); | |
3273 | else | |
3274 | printf_unfiltered (_("[%d] %s at %s:%d\n"), i + first_choice, | |
3275 | SYMBOL_PRINT_NAME (syms[i].sym), | |
3276 | sal.symtab->filename, sal.line); | |
4c4b4cd2 PH |
3277 | continue; |
3278 | } | |
d2e4a39e | 3279 | else |
4c4b4cd2 PH |
3280 | { |
3281 | int is_enumeral = | |
3282 | (SYMBOL_CLASS (syms[i].sym) == LOC_CONST | |
3283 | && SYMBOL_TYPE (syms[i].sym) != NULL | |
3284 | && TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) == TYPE_CODE_ENUM); | |
6f38eac8 | 3285 | struct symtab *symtab = syms[i].sym->symtab; |
4c4b4cd2 PH |
3286 | |
3287 | if (SYMBOL_LINE (syms[i].sym) != 0 && symtab != NULL) | |
323e0a4a | 3288 | printf_unfiltered (_("[%d] %s at %s:%d\n"), |
4c4b4cd2 PH |
3289 | i + first_choice, |
3290 | SYMBOL_PRINT_NAME (syms[i].sym), | |
3291 | symtab->filename, SYMBOL_LINE (syms[i].sym)); | |
76a01679 JB |
3292 | else if (is_enumeral |
3293 | && TYPE_NAME (SYMBOL_TYPE (syms[i].sym)) != NULL) | |
4c4b4cd2 | 3294 | { |
a3f17187 | 3295 | printf_unfiltered (("[%d] "), i + first_choice); |
76a01679 JB |
3296 | ada_print_type (SYMBOL_TYPE (syms[i].sym), NULL, |
3297 | gdb_stdout, -1, 0); | |
323e0a4a | 3298 | printf_unfiltered (_("'(%s) (enumeral)\n"), |
4c4b4cd2 PH |
3299 | SYMBOL_PRINT_NAME (syms[i].sym)); |
3300 | } | |
3301 | else if (symtab != NULL) | |
3302 | printf_unfiltered (is_enumeral | |
323e0a4a AC |
3303 | ? _("[%d] %s in %s (enumeral)\n") |
3304 | : _("[%d] %s at %s:?\n"), | |
4c4b4cd2 PH |
3305 | i + first_choice, |
3306 | SYMBOL_PRINT_NAME (syms[i].sym), | |
3307 | symtab->filename); | |
3308 | else | |
3309 | printf_unfiltered (is_enumeral | |
323e0a4a AC |
3310 | ? _("[%d] %s (enumeral)\n") |
3311 | : _("[%d] %s at ?\n"), | |
4c4b4cd2 PH |
3312 | i + first_choice, |
3313 | SYMBOL_PRINT_NAME (syms[i].sym)); | |
3314 | } | |
14f9c5c9 | 3315 | } |
d2e4a39e | 3316 | |
14f9c5c9 | 3317 | n_chosen = get_selections (chosen, nsyms, max_results, max_results > 1, |
4c4b4cd2 | 3318 | "overload-choice"); |
14f9c5c9 AS |
3319 | |
3320 | for (i = 0; i < n_chosen; i += 1) | |
4c4b4cd2 | 3321 | syms[i] = syms[chosen[i]]; |
14f9c5c9 AS |
3322 | |
3323 | return n_chosen; | |
3324 | } | |
3325 | ||
3326 | /* Read and validate a set of numeric choices from the user in the | |
4c4b4cd2 | 3327 | range 0 .. N_CHOICES-1. Place the results in increasing |
14f9c5c9 AS |
3328 | order in CHOICES[0 .. N-1], and return N. |
3329 | ||
3330 | The user types choices as a sequence of numbers on one line | |
3331 | separated by blanks, encoding them as follows: | |
3332 | ||
4c4b4cd2 | 3333 | + A choice of 0 means to cancel the selection, throwing an error. |
14f9c5c9 AS |
3334 | + If IS_ALL_CHOICE, a choice of 1 selects the entire set 0 .. N_CHOICES-1. |
3335 | + The user chooses k by typing k+IS_ALL_CHOICE+1. | |
3336 | ||
4c4b4cd2 | 3337 | The user is not allowed to choose more than MAX_RESULTS values. |
14f9c5c9 AS |
3338 | |
3339 | ANNOTATION_SUFFIX, if present, is used to annotate the input | |
4c4b4cd2 | 3340 | prompts (for use with the -f switch). */ |
14f9c5c9 AS |
3341 | |
3342 | int | |
d2e4a39e | 3343 | get_selections (int *choices, int n_choices, int max_results, |
4c4b4cd2 | 3344 | int is_all_choice, char *annotation_suffix) |
14f9c5c9 | 3345 | { |
d2e4a39e | 3346 | char *args; |
0bcd0149 | 3347 | char *prompt; |
14f9c5c9 AS |
3348 | int n_chosen; |
3349 | int first_choice = is_all_choice ? 2 : 1; | |
d2e4a39e | 3350 | |
14f9c5c9 AS |
3351 | prompt = getenv ("PS2"); |
3352 | if (prompt == NULL) | |
0bcd0149 | 3353 | prompt = "> "; |
14f9c5c9 | 3354 | |
0bcd0149 | 3355 | args = command_line_input (prompt, 0, annotation_suffix); |
d2e4a39e | 3356 | |
14f9c5c9 | 3357 | if (args == NULL) |
323e0a4a | 3358 | error_no_arg (_("one or more choice numbers")); |
14f9c5c9 AS |
3359 | |
3360 | n_chosen = 0; | |
76a01679 | 3361 | |
4c4b4cd2 PH |
3362 | /* Set choices[0 .. n_chosen-1] to the users' choices in ascending |
3363 | order, as given in args. Choices are validated. */ | |
14f9c5c9 AS |
3364 | while (1) |
3365 | { | |
d2e4a39e | 3366 | char *args2; |
14f9c5c9 AS |
3367 | int choice, j; |
3368 | ||
3369 | while (isspace (*args)) | |
4c4b4cd2 | 3370 | args += 1; |
14f9c5c9 | 3371 | if (*args == '\0' && n_chosen == 0) |
323e0a4a | 3372 | error_no_arg (_("one or more choice numbers")); |
14f9c5c9 | 3373 | else if (*args == '\0') |
4c4b4cd2 | 3374 | break; |
14f9c5c9 AS |
3375 | |
3376 | choice = strtol (args, &args2, 10); | |
d2e4a39e | 3377 | if (args == args2 || choice < 0 |
4c4b4cd2 | 3378 | || choice > n_choices + first_choice - 1) |
323e0a4a | 3379 | error (_("Argument must be choice number")); |
14f9c5c9 AS |
3380 | args = args2; |
3381 | ||
d2e4a39e | 3382 | if (choice == 0) |
323e0a4a | 3383 | error (_("cancelled")); |
14f9c5c9 AS |
3384 | |
3385 | if (choice < first_choice) | |
4c4b4cd2 PH |
3386 | { |
3387 | n_chosen = n_choices; | |
3388 | for (j = 0; j < n_choices; j += 1) | |
3389 | choices[j] = j; | |
3390 | break; | |
3391 | } | |
14f9c5c9 AS |
3392 | choice -= first_choice; |
3393 | ||
d2e4a39e | 3394 | for (j = n_chosen - 1; j >= 0 && choice < choices[j]; j -= 1) |
4c4b4cd2 PH |
3395 | { |
3396 | } | |
14f9c5c9 AS |
3397 | |
3398 | if (j < 0 || choice != choices[j]) | |
4c4b4cd2 PH |
3399 | { |
3400 | int k; | |
3401 | for (k = n_chosen - 1; k > j; k -= 1) | |
3402 | choices[k + 1] = choices[k]; | |
3403 | choices[j + 1] = choice; | |
3404 | n_chosen += 1; | |
3405 | } | |
14f9c5c9 AS |
3406 | } |
3407 | ||
3408 | if (n_chosen > max_results) | |
323e0a4a | 3409 | error (_("Select no more than %d of the above"), max_results); |
d2e4a39e | 3410 | |
14f9c5c9 AS |
3411 | return n_chosen; |
3412 | } | |
3413 | ||
4c4b4cd2 PH |
3414 | /* Replace the operator of length OPLEN at position PC in *EXPP with a call |
3415 | on the function identified by SYM and BLOCK, and taking NARGS | |
3416 | arguments. Update *EXPP as needed to hold more space. */ | |
14f9c5c9 AS |
3417 | |
3418 | static void | |
d2e4a39e | 3419 | replace_operator_with_call (struct expression **expp, int pc, int nargs, |
4c4b4cd2 PH |
3420 | int oplen, struct symbol *sym, |
3421 | struct block *block) | |
14f9c5c9 AS |
3422 | { |
3423 | /* A new expression, with 6 more elements (3 for funcall, 4 for function | |
4c4b4cd2 | 3424 | symbol, -oplen for operator being replaced). */ |
d2e4a39e | 3425 | struct expression *newexp = (struct expression *) |
14f9c5c9 | 3426 | xmalloc (sizeof (struct expression) |
4c4b4cd2 | 3427 | + EXP_ELEM_TO_BYTES ((*expp)->nelts + 7 - oplen)); |
d2e4a39e | 3428 | struct expression *exp = *expp; |
14f9c5c9 AS |
3429 | |
3430 | newexp->nelts = exp->nelts + 7 - oplen; | |
3431 | newexp->language_defn = exp->language_defn; | |
3432 | memcpy (newexp->elts, exp->elts, EXP_ELEM_TO_BYTES (pc)); | |
d2e4a39e | 3433 | memcpy (newexp->elts + pc + 7, exp->elts + pc + oplen, |
4c4b4cd2 | 3434 | EXP_ELEM_TO_BYTES (exp->nelts - pc - oplen)); |
14f9c5c9 AS |
3435 | |
3436 | newexp->elts[pc].opcode = newexp->elts[pc + 2].opcode = OP_FUNCALL; | |
3437 | newexp->elts[pc + 1].longconst = (LONGEST) nargs; | |
3438 | ||
3439 | newexp->elts[pc + 3].opcode = newexp->elts[pc + 6].opcode = OP_VAR_VALUE; | |
3440 | newexp->elts[pc + 4].block = block; | |
3441 | newexp->elts[pc + 5].symbol = sym; | |
3442 | ||
3443 | *expp = newexp; | |
aacb1f0a | 3444 | xfree (exp); |
d2e4a39e | 3445 | } |
14f9c5c9 AS |
3446 | |
3447 | /* Type-class predicates */ | |
3448 | ||
4c4b4cd2 PH |
3449 | /* True iff TYPE is numeric (i.e., an INT, RANGE (of numeric type), |
3450 | or FLOAT). */ | |
14f9c5c9 AS |
3451 | |
3452 | static int | |
d2e4a39e | 3453 | numeric_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_FLT: | |
3463 | return 1; | |
3464 | case TYPE_CODE_RANGE: | |
3465 | return (type == TYPE_TARGET_TYPE (type) | |
3466 | || numeric_type_p (TYPE_TARGET_TYPE (type))); | |
3467 | default: | |
3468 | return 0; | |
3469 | } | |
d2e4a39e | 3470 | } |
14f9c5c9 AS |
3471 | } |
3472 | ||
4c4b4cd2 | 3473 | /* True iff TYPE is integral (an INT or RANGE of INTs). */ |
14f9c5c9 AS |
3474 | |
3475 | static int | |
d2e4a39e | 3476 | integer_type_p (struct type *type) |
14f9c5c9 AS |
3477 | { |
3478 | if (type == NULL) | |
3479 | return 0; | |
d2e4a39e AS |
3480 | else |
3481 | { | |
3482 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3483 | { |
3484 | case TYPE_CODE_INT: | |
3485 | return 1; | |
3486 | case TYPE_CODE_RANGE: | |
3487 | return (type == TYPE_TARGET_TYPE (type) | |
3488 | || integer_type_p (TYPE_TARGET_TYPE (type))); | |
3489 | default: | |
3490 | return 0; | |
3491 | } | |
d2e4a39e | 3492 | } |
14f9c5c9 AS |
3493 | } |
3494 | ||
4c4b4cd2 | 3495 | /* True iff TYPE is scalar (INT, RANGE, FLOAT, ENUM). */ |
14f9c5c9 AS |
3496 | |
3497 | static int | |
d2e4a39e | 3498 | scalar_type_p (struct type *type) |
14f9c5c9 AS |
3499 | { |
3500 | if (type == NULL) | |
3501 | return 0; | |
d2e4a39e AS |
3502 | else |
3503 | { | |
3504 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3505 | { |
3506 | case TYPE_CODE_INT: | |
3507 | case TYPE_CODE_RANGE: | |
3508 | case TYPE_CODE_ENUM: | |
3509 | case TYPE_CODE_FLT: | |
3510 | return 1; | |
3511 | default: | |
3512 | return 0; | |
3513 | } | |
d2e4a39e | 3514 | } |
14f9c5c9 AS |
3515 | } |
3516 | ||
4c4b4cd2 | 3517 | /* True iff TYPE is discrete (INT, RANGE, ENUM). */ |
14f9c5c9 AS |
3518 | |
3519 | static int | |
d2e4a39e | 3520 | discrete_type_p (struct type *type) |
14f9c5c9 AS |
3521 | { |
3522 | if (type == NULL) | |
3523 | return 0; | |
d2e4a39e AS |
3524 | else |
3525 | { | |
3526 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3527 | { |
3528 | case TYPE_CODE_INT: | |
3529 | case TYPE_CODE_RANGE: | |
3530 | case TYPE_CODE_ENUM: | |
3531 | return 1; | |
3532 | default: | |
3533 | return 0; | |
3534 | } | |
d2e4a39e | 3535 | } |
14f9c5c9 AS |
3536 | } |
3537 | ||
4c4b4cd2 PH |
3538 | /* Returns non-zero if OP with operands in the vector ARGS could be |
3539 | a user-defined function. Errs on the side of pre-defined operators | |
3540 | (i.e., result 0). */ | |
14f9c5c9 AS |
3541 | |
3542 | static int | |
d2e4a39e | 3543 | possible_user_operator_p (enum exp_opcode op, struct value *args[]) |
14f9c5c9 | 3544 | { |
76a01679 | 3545 | struct type *type0 = |
df407dfe | 3546 | (args[0] == NULL) ? NULL : ada_check_typedef (value_type (args[0])); |
d2e4a39e | 3547 | struct type *type1 = |
df407dfe | 3548 | (args[1] == NULL) ? NULL : ada_check_typedef (value_type (args[1])); |
d2e4a39e | 3549 | |
4c4b4cd2 PH |
3550 | if (type0 == NULL) |
3551 | return 0; | |
3552 | ||
14f9c5c9 AS |
3553 | switch (op) |
3554 | { | |
3555 | default: | |
3556 | return 0; | |
3557 | ||
3558 | case BINOP_ADD: | |
3559 | case BINOP_SUB: | |
3560 | case BINOP_MUL: | |
3561 | case BINOP_DIV: | |
d2e4a39e | 3562 | return (!(numeric_type_p (type0) && numeric_type_p (type1))); |
14f9c5c9 AS |
3563 | |
3564 | case BINOP_REM: | |
3565 | case BINOP_MOD: | |
3566 | case BINOP_BITWISE_AND: | |
3567 | case BINOP_BITWISE_IOR: | |
3568 | case BINOP_BITWISE_XOR: | |
d2e4a39e | 3569 | return (!(integer_type_p (type0) && integer_type_p (type1))); |
14f9c5c9 AS |
3570 | |
3571 | case BINOP_EQUAL: | |
3572 | case BINOP_NOTEQUAL: | |
3573 | case BINOP_LESS: | |
3574 | case BINOP_GTR: | |
3575 | case BINOP_LEQ: | |
3576 | case BINOP_GEQ: | |
d2e4a39e | 3577 | return (!(scalar_type_p (type0) && scalar_type_p (type1))); |
14f9c5c9 AS |
3578 | |
3579 | case BINOP_CONCAT: | |
ee90b9ab | 3580 | return !ada_is_array_type (type0) || !ada_is_array_type (type1); |
14f9c5c9 AS |
3581 | |
3582 | case BINOP_EXP: | |
d2e4a39e | 3583 | return (!(numeric_type_p (type0) && integer_type_p (type1))); |
14f9c5c9 AS |
3584 | |
3585 | case UNOP_NEG: | |
3586 | case UNOP_PLUS: | |
3587 | case UNOP_LOGICAL_NOT: | |
d2e4a39e AS |
3588 | case UNOP_ABS: |
3589 | return (!numeric_type_p (type0)); | |
14f9c5c9 AS |
3590 | |
3591 | } | |
3592 | } | |
3593 | \f | |
4c4b4cd2 | 3594 | /* Renaming */ |
14f9c5c9 | 3595 | |
aeb5907d JB |
3596 | /* NOTES: |
3597 | ||
3598 | 1. In the following, we assume that a renaming type's name may | |
3599 | have an ___XD suffix. It would be nice if this went away at some | |
3600 | point. | |
3601 | 2. We handle both the (old) purely type-based representation of | |
3602 | renamings and the (new) variable-based encoding. At some point, | |
3603 | it is devoutly to be hoped that the former goes away | |
3604 | (FIXME: hilfinger-2007-07-09). | |
3605 | 3. Subprogram renamings are not implemented, although the XRS | |
3606 | suffix is recognized (FIXME: hilfinger-2007-07-09). */ | |
3607 | ||
3608 | /* If SYM encodes a renaming, | |
3609 | ||
3610 | <renaming> renames <renamed entity>, | |
3611 | ||
3612 | sets *LEN to the length of the renamed entity's name, | |
3613 | *RENAMED_ENTITY to that name (not null-terminated), and *RENAMING_EXPR to | |
3614 | the string describing the subcomponent selected from the renamed | |
3615 | entity. Returns ADA_NOT_RENAMING if SYM does not encode a renaming | |
3616 | (in which case, the values of *RENAMED_ENTITY, *LEN, and *RENAMING_EXPR | |
3617 | are undefined). Otherwise, returns a value indicating the category | |
3618 | of entity renamed: an object (ADA_OBJECT_RENAMING), exception | |
3619 | (ADA_EXCEPTION_RENAMING), package (ADA_PACKAGE_RENAMING), or | |
3620 | subprogram (ADA_SUBPROGRAM_RENAMING). Does no allocation; the | |
3621 | strings returned in *RENAMED_ENTITY and *RENAMING_EXPR should not be | |
3622 | deallocated. The values of RENAMED_ENTITY, LEN, or RENAMING_EXPR | |
3623 | may be NULL, in which case they are not assigned. | |
3624 | ||
3625 | [Currently, however, GCC does not generate subprogram renamings.] */ | |
3626 | ||
3627 | enum ada_renaming_category | |
3628 | ada_parse_renaming (struct symbol *sym, | |
3629 | const char **renamed_entity, int *len, | |
3630 | const char **renaming_expr) | |
3631 | { | |
3632 | enum ada_renaming_category kind; | |
3633 | const char *info; | |
3634 | const char *suffix; | |
3635 | ||
3636 | if (sym == NULL) | |
3637 | return ADA_NOT_RENAMING; | |
3638 | switch (SYMBOL_CLASS (sym)) | |
14f9c5c9 | 3639 | { |
aeb5907d JB |
3640 | default: |
3641 | return ADA_NOT_RENAMING; | |
3642 | case LOC_TYPEDEF: | |
3643 | return parse_old_style_renaming (SYMBOL_TYPE (sym), | |
3644 | renamed_entity, len, renaming_expr); | |
3645 | case LOC_LOCAL: | |
3646 | case LOC_STATIC: | |
3647 | case LOC_COMPUTED: | |
3648 | case LOC_OPTIMIZED_OUT: | |
3649 | info = strstr (SYMBOL_LINKAGE_NAME (sym), "___XR"); | |
3650 | if (info == NULL) | |
3651 | return ADA_NOT_RENAMING; | |
3652 | switch (info[5]) | |
3653 | { | |
3654 | case '_': | |
3655 | kind = ADA_OBJECT_RENAMING; | |
3656 | info += 6; | |
3657 | break; | |
3658 | case 'E': | |
3659 | kind = ADA_EXCEPTION_RENAMING; | |
3660 | info += 7; | |
3661 | break; | |
3662 | case 'P': | |
3663 | kind = ADA_PACKAGE_RENAMING; | |
3664 | info += 7; | |
3665 | break; | |
3666 | case 'S': | |
3667 | kind = ADA_SUBPROGRAM_RENAMING; | |
3668 | info += 7; | |
3669 | break; | |
3670 | default: | |
3671 | return ADA_NOT_RENAMING; | |
3672 | } | |
14f9c5c9 | 3673 | } |
4c4b4cd2 | 3674 | |
aeb5907d JB |
3675 | if (renamed_entity != NULL) |
3676 | *renamed_entity = info; | |
3677 | suffix = strstr (info, "___XE"); | |
3678 | if (suffix == NULL || suffix == info) | |
3679 | return ADA_NOT_RENAMING; | |
3680 | if (len != NULL) | |
3681 | *len = strlen (info) - strlen (suffix); | |
3682 | suffix += 5; | |
3683 | if (renaming_expr != NULL) | |
3684 | *renaming_expr = suffix; | |
3685 | return kind; | |
3686 | } | |
3687 | ||
3688 | /* Assuming TYPE encodes a renaming according to the old encoding in | |
3689 | exp_dbug.ads, returns details of that renaming in *RENAMED_ENTITY, | |
3690 | *LEN, and *RENAMING_EXPR, as for ada_parse_renaming, above. Returns | |
3691 | ADA_NOT_RENAMING otherwise. */ | |
3692 | static enum ada_renaming_category | |
3693 | parse_old_style_renaming (struct type *type, | |
3694 | const char **renamed_entity, int *len, | |
3695 | const char **renaming_expr) | |
3696 | { | |
3697 | enum ada_renaming_category kind; | |
3698 | const char *name; | |
3699 | const char *info; | |
3700 | const char *suffix; | |
14f9c5c9 | 3701 | |
aeb5907d JB |
3702 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_ENUM |
3703 | || TYPE_NFIELDS (type) != 1) | |
3704 | return ADA_NOT_RENAMING; | |
14f9c5c9 | 3705 | |
aeb5907d JB |
3706 | name = type_name_no_tag (type); |
3707 | if (name == NULL) | |
3708 | return ADA_NOT_RENAMING; | |
3709 | ||
3710 | name = strstr (name, "___XR"); | |
3711 | if (name == NULL) | |
3712 | return ADA_NOT_RENAMING; | |
3713 | switch (name[5]) | |
3714 | { | |
3715 | case '\0': | |
3716 | case '_': | |
3717 | kind = ADA_OBJECT_RENAMING; | |
3718 | break; | |
3719 | case 'E': | |
3720 | kind = ADA_EXCEPTION_RENAMING; | |
3721 | break; | |
3722 | case 'P': | |
3723 | kind = ADA_PACKAGE_RENAMING; | |
3724 | break; | |
3725 | case 'S': | |
3726 | kind = ADA_SUBPROGRAM_RENAMING; | |
3727 | break; | |
3728 | default: | |
3729 | return ADA_NOT_RENAMING; | |
3730 | } | |
14f9c5c9 | 3731 | |
aeb5907d JB |
3732 | info = TYPE_FIELD_NAME (type, 0); |
3733 | if (info == NULL) | |
3734 | return ADA_NOT_RENAMING; | |
3735 | if (renamed_entity != NULL) | |
3736 | *renamed_entity = info; | |
3737 | suffix = strstr (info, "___XE"); | |
3738 | if (renaming_expr != NULL) | |
3739 | *renaming_expr = suffix + 5; | |
3740 | if (suffix == NULL || suffix == info) | |
3741 | return ADA_NOT_RENAMING; | |
3742 | if (len != NULL) | |
3743 | *len = suffix - info; | |
3744 | return kind; | |
3745 | } | |
52ce6436 | 3746 | |
14f9c5c9 | 3747 | \f |
d2e4a39e | 3748 | |
4c4b4cd2 | 3749 | /* Evaluation: Function Calls */ |
14f9c5c9 | 3750 | |
4c4b4cd2 PH |
3751 | /* Return an lvalue containing the value VAL. This is the identity on |
3752 | lvalues, and otherwise has the side-effect of pushing a copy of VAL | |
3753 | on the stack, using and updating *SP as the stack pointer, and | |
42ae5230 | 3754 | returning an lvalue whose value_address points to the copy. */ |
14f9c5c9 | 3755 | |
d2e4a39e | 3756 | static struct value * |
4a399546 | 3757 | ensure_lval (struct value *val, struct gdbarch *gdbarch, CORE_ADDR *sp) |
14f9c5c9 | 3758 | { |
c3e5cd34 PH |
3759 | if (! VALUE_LVAL (val)) |
3760 | { | |
df407dfe | 3761 | int len = TYPE_LENGTH (ada_check_typedef (value_type (val))); |
c3e5cd34 PH |
3762 | |
3763 | /* The following is taken from the structure-return code in | |
3764 | call_function_by_hand. FIXME: Therefore, some refactoring seems | |
3765 | indicated. */ | |
4a399546 | 3766 | if (gdbarch_inner_than (gdbarch, 1, 2)) |
c3e5cd34 | 3767 | { |
42ae5230 | 3768 | /* Stack grows downward. Align SP and value_address (val) after |
c3e5cd34 PH |
3769 | reserving sufficient space. */ |
3770 | *sp -= len; | |
4a399546 UW |
3771 | if (gdbarch_frame_align_p (gdbarch)) |
3772 | *sp = gdbarch_frame_align (gdbarch, *sp); | |
42ae5230 | 3773 | set_value_address (val, *sp); |
c3e5cd34 PH |
3774 | } |
3775 | else | |
3776 | { | |
3777 | /* Stack grows upward. Align the frame, allocate space, and | |
3778 | then again, re-align the frame. */ | |
4a399546 UW |
3779 | if (gdbarch_frame_align_p (gdbarch)) |
3780 | *sp = gdbarch_frame_align (gdbarch, *sp); | |
42ae5230 | 3781 | set_value_address (val, *sp); |
c3e5cd34 | 3782 | *sp += len; |
4a399546 UW |
3783 | if (gdbarch_frame_align_p (gdbarch)) |
3784 | *sp = gdbarch_frame_align (gdbarch, *sp); | |
c3e5cd34 | 3785 | } |
a84a8a0d | 3786 | VALUE_LVAL (val) = lval_memory; |
14f9c5c9 | 3787 | |
42ae5230 | 3788 | write_memory (value_address (val), value_contents_raw (val), len); |
c3e5cd34 | 3789 | } |
14f9c5c9 AS |
3790 | |
3791 | return val; | |
3792 | } | |
3793 | ||
3794 | /* Return the value ACTUAL, converted to be an appropriate value for a | |
3795 | formal of type FORMAL_TYPE. Use *SP as a stack pointer for | |
3796 | allocating any necessary descriptors (fat pointers), or copies of | |
4c4b4cd2 | 3797 | values not residing in memory, updating it as needed. */ |
14f9c5c9 | 3798 | |
a93c0eb6 JB |
3799 | struct value * |
3800 | ada_convert_actual (struct value *actual, struct type *formal_type0, | |
4a399546 | 3801 | struct gdbarch *gdbarch, CORE_ADDR *sp) |
14f9c5c9 | 3802 | { |
df407dfe | 3803 | struct type *actual_type = ada_check_typedef (value_type (actual)); |
61ee279c | 3804 | struct type *formal_type = ada_check_typedef (formal_type0); |
d2e4a39e AS |
3805 | struct type *formal_target = |
3806 | TYPE_CODE (formal_type) == TYPE_CODE_PTR | |
61ee279c | 3807 | ? ada_check_typedef (TYPE_TARGET_TYPE (formal_type)) : formal_type; |
d2e4a39e AS |
3808 | struct type *actual_target = |
3809 | TYPE_CODE (actual_type) == TYPE_CODE_PTR | |
61ee279c | 3810 | ? ada_check_typedef (TYPE_TARGET_TYPE (actual_type)) : actual_type; |
14f9c5c9 | 3811 | |
4c4b4cd2 | 3812 | if (ada_is_array_descriptor_type (formal_target) |
14f9c5c9 | 3813 | && TYPE_CODE (actual_target) == TYPE_CODE_ARRAY) |
4a399546 | 3814 | return make_array_descriptor (formal_type, actual, gdbarch, sp); |
a84a8a0d JB |
3815 | else if (TYPE_CODE (formal_type) == TYPE_CODE_PTR |
3816 | || TYPE_CODE (formal_type) == TYPE_CODE_REF) | |
14f9c5c9 | 3817 | { |
a84a8a0d | 3818 | struct value *result; |
14f9c5c9 | 3819 | if (TYPE_CODE (formal_target) == TYPE_CODE_ARRAY |
4c4b4cd2 | 3820 | && ada_is_array_descriptor_type (actual_target)) |
a84a8a0d | 3821 | result = desc_data (actual); |
14f9c5c9 | 3822 | else if (TYPE_CODE (actual_type) != TYPE_CODE_PTR) |
4c4b4cd2 PH |
3823 | { |
3824 | if (VALUE_LVAL (actual) != lval_memory) | |
3825 | { | |
3826 | struct value *val; | |
df407dfe | 3827 | actual_type = ada_check_typedef (value_type (actual)); |
4c4b4cd2 | 3828 | val = allocate_value (actual_type); |
990a07ab | 3829 | memcpy ((char *) value_contents_raw (val), |
0fd88904 | 3830 | (char *) value_contents (actual), |
4c4b4cd2 | 3831 | TYPE_LENGTH (actual_type)); |
4a399546 | 3832 | actual = ensure_lval (val, gdbarch, sp); |
4c4b4cd2 | 3833 | } |
a84a8a0d | 3834 | result = value_addr (actual); |
4c4b4cd2 | 3835 | } |
a84a8a0d JB |
3836 | else |
3837 | return actual; | |
3838 | return value_cast_pointers (formal_type, result); | |
14f9c5c9 AS |
3839 | } |
3840 | else if (TYPE_CODE (actual_type) == TYPE_CODE_PTR) | |
3841 | return ada_value_ind (actual); | |
3842 | ||
3843 | return actual; | |
3844 | } | |
3845 | ||
3846 | ||
4c4b4cd2 PH |
3847 | /* Push a descriptor of type TYPE for array value ARR on the stack at |
3848 | *SP, updating *SP to reflect the new descriptor. Return either | |
14f9c5c9 | 3849 | an lvalue representing the new descriptor, or (if TYPE is a pointer- |
4c4b4cd2 PH |
3850 | to-descriptor type rather than a descriptor type), a struct value * |
3851 | representing a pointer to this descriptor. */ | |
14f9c5c9 | 3852 | |
d2e4a39e | 3853 | static struct value * |
4a399546 UW |
3854 | make_array_descriptor (struct type *type, struct value *arr, |
3855 | struct gdbarch *gdbarch, CORE_ADDR *sp) | |
14f9c5c9 | 3856 | { |
d2e4a39e AS |
3857 | struct type *bounds_type = desc_bounds_type (type); |
3858 | struct type *desc_type = desc_base_type (type); | |
3859 | struct value *descriptor = allocate_value (desc_type); | |
3860 | struct value *bounds = allocate_value (bounds_type); | |
14f9c5c9 | 3861 | int i; |
d2e4a39e | 3862 | |
df407dfe | 3863 | for (i = ada_array_arity (ada_check_typedef (value_type (arr))); i > 0; i -= 1) |
14f9c5c9 | 3864 | { |
50810684 UW |
3865 | modify_general_field (value_type (bounds), |
3866 | value_contents_writeable (bounds), | |
1eea4ebd | 3867 | ada_array_bound (arr, i, 0), |
4c4b4cd2 PH |
3868 | desc_bound_bitpos (bounds_type, i, 0), |
3869 | desc_bound_bitsize (bounds_type, i, 0)); | |
50810684 UW |
3870 | modify_general_field (value_type (bounds), |
3871 | value_contents_writeable (bounds), | |
1eea4ebd | 3872 | ada_array_bound (arr, i, 1), |
4c4b4cd2 PH |
3873 | desc_bound_bitpos (bounds_type, i, 1), |
3874 | desc_bound_bitsize (bounds_type, i, 1)); | |
14f9c5c9 | 3875 | } |
d2e4a39e | 3876 | |
4a399546 | 3877 | bounds = ensure_lval (bounds, gdbarch, sp); |
d2e4a39e | 3878 | |
50810684 UW |
3879 | modify_general_field (value_type (descriptor), |
3880 | value_contents_writeable (descriptor), | |
4a399546 | 3881 | value_address (ensure_lval (arr, gdbarch, sp)), |
76a01679 JB |
3882 | fat_pntr_data_bitpos (desc_type), |
3883 | fat_pntr_data_bitsize (desc_type)); | |
4c4b4cd2 | 3884 | |
50810684 UW |
3885 | modify_general_field (value_type (descriptor), |
3886 | value_contents_writeable (descriptor), | |
42ae5230 | 3887 | value_address (bounds), |
4c4b4cd2 PH |
3888 | fat_pntr_bounds_bitpos (desc_type), |
3889 | fat_pntr_bounds_bitsize (desc_type)); | |
14f9c5c9 | 3890 | |
4a399546 | 3891 | descriptor = ensure_lval (descriptor, gdbarch, sp); |
14f9c5c9 AS |
3892 | |
3893 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
3894 | return value_addr (descriptor); | |
3895 | else | |
3896 | return descriptor; | |
3897 | } | |
14f9c5c9 | 3898 | \f |
963a6417 PH |
3899 | /* Dummy definitions for an experimental caching module that is not |
3900 | * used in the public sources. */ | |
96d887e8 | 3901 | |
96d887e8 PH |
3902 | static int |
3903 | lookup_cached_symbol (const char *name, domain_enum namespace, | |
2570f2b7 | 3904 | struct symbol **sym, struct block **block) |
96d887e8 PH |
3905 | { |
3906 | return 0; | |
3907 | } | |
3908 | ||
3909 | static void | |
3910 | cache_symbol (const char *name, domain_enum namespace, struct symbol *sym, | |
2570f2b7 | 3911 | struct block *block) |
96d887e8 PH |
3912 | { |
3913 | } | |
4c4b4cd2 PH |
3914 | \f |
3915 | /* Symbol Lookup */ | |
3916 | ||
3917 | /* Return the result of a standard (literal, C-like) lookup of NAME in | |
3918 | given DOMAIN, visible from lexical block BLOCK. */ | |
3919 | ||
3920 | static struct symbol * | |
3921 | standard_lookup (const char *name, const struct block *block, | |
3922 | domain_enum domain) | |
3923 | { | |
3924 | struct symbol *sym; | |
4c4b4cd2 | 3925 | |
2570f2b7 | 3926 | if (lookup_cached_symbol (name, domain, &sym, NULL)) |
4c4b4cd2 | 3927 | return sym; |
2570f2b7 UW |
3928 | sym = lookup_symbol_in_language (name, block, domain, language_c, 0); |
3929 | cache_symbol (name, domain, sym, block_found); | |
4c4b4cd2 PH |
3930 | return sym; |
3931 | } | |
3932 | ||
3933 | ||
3934 | /* Non-zero iff there is at least one non-function/non-enumeral symbol | |
3935 | in the symbol fields of SYMS[0..N-1]. We treat enumerals as functions, | |
3936 | since they contend in overloading in the same way. */ | |
3937 | static int | |
3938 | is_nonfunction (struct ada_symbol_info syms[], int n) | |
3939 | { | |
3940 | int i; | |
3941 | ||
3942 | for (i = 0; i < n; i += 1) | |
3943 | if (TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) != TYPE_CODE_FUNC | |
3944 | && (TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) != TYPE_CODE_ENUM | |
3945 | || SYMBOL_CLASS (syms[i].sym) != LOC_CONST)) | |
14f9c5c9 AS |
3946 | return 1; |
3947 | ||
3948 | return 0; | |
3949 | } | |
3950 | ||
3951 | /* If true (non-zero), then TYPE0 and TYPE1 represent equivalent | |
4c4b4cd2 | 3952 | struct types. Otherwise, they may not. */ |
14f9c5c9 AS |
3953 | |
3954 | static int | |
d2e4a39e | 3955 | equiv_types (struct type *type0, struct type *type1) |
14f9c5c9 | 3956 | { |
d2e4a39e | 3957 | if (type0 == type1) |
14f9c5c9 | 3958 | return 1; |
d2e4a39e | 3959 | if (type0 == NULL || type1 == NULL |
14f9c5c9 AS |
3960 | || TYPE_CODE (type0) != TYPE_CODE (type1)) |
3961 | return 0; | |
d2e4a39e | 3962 | if ((TYPE_CODE (type0) == TYPE_CODE_STRUCT |
14f9c5c9 AS |
3963 | || TYPE_CODE (type0) == TYPE_CODE_ENUM) |
3964 | && ada_type_name (type0) != NULL && ada_type_name (type1) != NULL | |
4c4b4cd2 | 3965 | && strcmp (ada_type_name (type0), ada_type_name (type1)) == 0) |
14f9c5c9 | 3966 | return 1; |
d2e4a39e | 3967 | |
14f9c5c9 AS |
3968 | return 0; |
3969 | } | |
3970 | ||
3971 | /* True iff SYM0 represents the same entity as SYM1, or one that is | |
4c4b4cd2 | 3972 | no more defined than that of SYM1. */ |
14f9c5c9 AS |
3973 | |
3974 | static int | |
d2e4a39e | 3975 | lesseq_defined_than (struct symbol *sym0, struct symbol *sym1) |
14f9c5c9 AS |
3976 | { |
3977 | if (sym0 == sym1) | |
3978 | return 1; | |
176620f1 | 3979 | if (SYMBOL_DOMAIN (sym0) != SYMBOL_DOMAIN (sym1) |
14f9c5c9 AS |
3980 | || SYMBOL_CLASS (sym0) != SYMBOL_CLASS (sym1)) |
3981 | return 0; | |
3982 | ||
d2e4a39e | 3983 | switch (SYMBOL_CLASS (sym0)) |
14f9c5c9 AS |
3984 | { |
3985 | case LOC_UNDEF: | |
3986 | return 1; | |
3987 | case LOC_TYPEDEF: | |
3988 | { | |
4c4b4cd2 PH |
3989 | struct type *type0 = SYMBOL_TYPE (sym0); |
3990 | struct type *type1 = SYMBOL_TYPE (sym1); | |
3991 | char *name0 = SYMBOL_LINKAGE_NAME (sym0); | |
3992 | char *name1 = SYMBOL_LINKAGE_NAME (sym1); | |
3993 | int len0 = strlen (name0); | |
3994 | return | |
3995 | TYPE_CODE (type0) == TYPE_CODE (type1) | |
3996 | && (equiv_types (type0, type1) | |
3997 | || (len0 < strlen (name1) && strncmp (name0, name1, len0) == 0 | |
3998 | && strncmp (name1 + len0, "___XV", 5) == 0)); | |
14f9c5c9 AS |
3999 | } |
4000 | case LOC_CONST: | |
4001 | return SYMBOL_VALUE (sym0) == SYMBOL_VALUE (sym1) | |
4c4b4cd2 | 4002 | && equiv_types (SYMBOL_TYPE (sym0), SYMBOL_TYPE (sym1)); |
d2e4a39e AS |
4003 | default: |
4004 | return 0; | |
14f9c5c9 AS |
4005 | } |
4006 | } | |
4007 | ||
4c4b4cd2 PH |
4008 | /* Append (SYM,BLOCK,SYMTAB) to the end of the array of struct ada_symbol_info |
4009 | records in OBSTACKP. Do nothing if SYM is a duplicate. */ | |
14f9c5c9 AS |
4010 | |
4011 | static void | |
76a01679 JB |
4012 | add_defn_to_vec (struct obstack *obstackp, |
4013 | struct symbol *sym, | |
2570f2b7 | 4014 | struct block *block) |
14f9c5c9 AS |
4015 | { |
4016 | int i; | |
4017 | size_t tmp; | |
4c4b4cd2 | 4018 | struct ada_symbol_info *prevDefns = defns_collected (obstackp, 0); |
14f9c5c9 | 4019 | |
529cad9c PH |
4020 | /* Do not try to complete stub types, as the debugger is probably |
4021 | already scanning all symbols matching a certain name at the | |
4022 | time when this function is called. Trying to replace the stub | |
4023 | type by its associated full type will cause us to restart a scan | |
4024 | which may lead to an infinite recursion. Instead, the client | |
4025 | collecting the matching symbols will end up collecting several | |
4026 | matches, with at least one of them complete. It can then filter | |
4027 | out the stub ones if needed. */ | |
4028 | ||
4c4b4cd2 PH |
4029 | for (i = num_defns_collected (obstackp) - 1; i >= 0; i -= 1) |
4030 | { | |
4031 | if (lesseq_defined_than (sym, prevDefns[i].sym)) | |
4032 | return; | |
4033 | else if (lesseq_defined_than (prevDefns[i].sym, sym)) | |
4034 | { | |
4035 | prevDefns[i].sym = sym; | |
4036 | prevDefns[i].block = block; | |
4c4b4cd2 | 4037 | return; |
76a01679 | 4038 | } |
4c4b4cd2 PH |
4039 | } |
4040 | ||
4041 | { | |
4042 | struct ada_symbol_info info; | |
4043 | ||
4044 | info.sym = sym; | |
4045 | info.block = block; | |
4c4b4cd2 PH |
4046 | obstack_grow (obstackp, &info, sizeof (struct ada_symbol_info)); |
4047 | } | |
4048 | } | |
4049 | ||
4050 | /* Number of ada_symbol_info structures currently collected in | |
4051 | current vector in *OBSTACKP. */ | |
4052 | ||
76a01679 JB |
4053 | static int |
4054 | num_defns_collected (struct obstack *obstackp) | |
4c4b4cd2 PH |
4055 | { |
4056 | return obstack_object_size (obstackp) / sizeof (struct ada_symbol_info); | |
4057 | } | |
4058 | ||
4059 | /* Vector of ada_symbol_info structures currently collected in current | |
4060 | vector in *OBSTACKP. If FINISH, close off the vector and return | |
4061 | its final address. */ | |
4062 | ||
76a01679 | 4063 | static struct ada_symbol_info * |
4c4b4cd2 PH |
4064 | defns_collected (struct obstack *obstackp, int finish) |
4065 | { | |
4066 | if (finish) | |
4067 | return obstack_finish (obstackp); | |
4068 | else | |
4069 | return (struct ada_symbol_info *) obstack_base (obstackp); | |
4070 | } | |
4071 | ||
96d887e8 PH |
4072 | /* Look, in partial_symtab PST, for symbol NAME in given namespace. |
4073 | Check the global symbols if GLOBAL, the static symbols if not. | |
4074 | Do wild-card match if WILD. */ | |
4c4b4cd2 | 4075 | |
96d887e8 PH |
4076 | static struct partial_symbol * |
4077 | ada_lookup_partial_symbol (struct partial_symtab *pst, const char *name, | |
4078 | int global, domain_enum namespace, int wild) | |
4c4b4cd2 | 4079 | { |
96d887e8 PH |
4080 | struct partial_symbol **start; |
4081 | int name_len = strlen (name); | |
4082 | int length = (global ? pst->n_global_syms : pst->n_static_syms); | |
4083 | int i; | |
4c4b4cd2 | 4084 | |
96d887e8 | 4085 | if (length == 0) |
4c4b4cd2 | 4086 | { |
96d887e8 | 4087 | return (NULL); |
4c4b4cd2 PH |
4088 | } |
4089 | ||
96d887e8 PH |
4090 | start = (global ? |
4091 | pst->objfile->global_psymbols.list + pst->globals_offset : | |
4092 | pst->objfile->static_psymbols.list + pst->statics_offset); | |
4c4b4cd2 | 4093 | |
96d887e8 | 4094 | if (wild) |
4c4b4cd2 | 4095 | { |
96d887e8 PH |
4096 | for (i = 0; i < length; i += 1) |
4097 | { | |
4098 | struct partial_symbol *psym = start[i]; | |
4c4b4cd2 | 4099 | |
5eeb2539 AR |
4100 | if (symbol_matches_domain (SYMBOL_LANGUAGE (psym), |
4101 | SYMBOL_DOMAIN (psym), namespace) | |
1265e4aa | 4102 | && wild_match (name, name_len, SYMBOL_LINKAGE_NAME (psym))) |
96d887e8 PH |
4103 | return psym; |
4104 | } | |
4105 | return NULL; | |
4c4b4cd2 | 4106 | } |
96d887e8 PH |
4107 | else |
4108 | { | |
4109 | if (global) | |
4110 | { | |
4111 | int U; | |
4112 | i = 0; | |
4113 | U = length - 1; | |
4114 | while (U - i > 4) | |
4115 | { | |
4116 | int M = (U + i) >> 1; | |
4117 | struct partial_symbol *psym = start[M]; | |
4118 | if (SYMBOL_LINKAGE_NAME (psym)[0] < name[0]) | |
4119 | i = M + 1; | |
4120 | else if (SYMBOL_LINKAGE_NAME (psym)[0] > name[0]) | |
4121 | U = M - 1; | |
4122 | else if (strcmp (SYMBOL_LINKAGE_NAME (psym), name) < 0) | |
4123 | i = M + 1; | |
4124 | else | |
4125 | U = M; | |
4126 | } | |
4127 | } | |
4128 | else | |
4129 | i = 0; | |
4c4b4cd2 | 4130 | |
96d887e8 PH |
4131 | while (i < length) |
4132 | { | |
4133 | struct partial_symbol *psym = start[i]; | |
4c4b4cd2 | 4134 | |
5eeb2539 AR |
4135 | if (symbol_matches_domain (SYMBOL_LANGUAGE (psym), |
4136 | SYMBOL_DOMAIN (psym), namespace)) | |
96d887e8 PH |
4137 | { |
4138 | int cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym), name_len); | |
4c4b4cd2 | 4139 | |
96d887e8 PH |
4140 | if (cmp < 0) |
4141 | { | |
4142 | if (global) | |
4143 | break; | |
4144 | } | |
4145 | else if (cmp == 0 | |
4146 | && is_name_suffix (SYMBOL_LINKAGE_NAME (psym) | |
76a01679 | 4147 | + name_len)) |
96d887e8 PH |
4148 | return psym; |
4149 | } | |
4150 | i += 1; | |
4151 | } | |
4c4b4cd2 | 4152 | |
96d887e8 PH |
4153 | if (global) |
4154 | { | |
4155 | int U; | |
4156 | i = 0; | |
4157 | U = length - 1; | |
4158 | while (U - i > 4) | |
4159 | { | |
4160 | int M = (U + i) >> 1; | |
4161 | struct partial_symbol *psym = start[M]; | |
4162 | if (SYMBOL_LINKAGE_NAME (psym)[0] < '_') | |
4163 | i = M + 1; | |
4164 | else if (SYMBOL_LINKAGE_NAME (psym)[0] > '_') | |
4165 | U = M - 1; | |
4166 | else if (strcmp (SYMBOL_LINKAGE_NAME (psym), "_ada_") < 0) | |
4167 | i = M + 1; | |
4168 | else | |
4169 | U = M; | |
4170 | } | |
4171 | } | |
4172 | else | |
4173 | i = 0; | |
4c4b4cd2 | 4174 | |
96d887e8 PH |
4175 | while (i < length) |
4176 | { | |
4177 | struct partial_symbol *psym = start[i]; | |
4c4b4cd2 | 4178 | |
5eeb2539 AR |
4179 | if (symbol_matches_domain (SYMBOL_LANGUAGE (psym), |
4180 | SYMBOL_DOMAIN (psym), namespace)) | |
96d887e8 PH |
4181 | { |
4182 | int cmp; | |
4c4b4cd2 | 4183 | |
96d887e8 PH |
4184 | cmp = (int) '_' - (int) SYMBOL_LINKAGE_NAME (psym)[0]; |
4185 | if (cmp == 0) | |
4186 | { | |
4187 | cmp = strncmp ("_ada_", SYMBOL_LINKAGE_NAME (psym), 5); | |
4188 | if (cmp == 0) | |
4189 | cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym) + 5, | |
76a01679 | 4190 | name_len); |
96d887e8 | 4191 | } |
4c4b4cd2 | 4192 | |
96d887e8 PH |
4193 | if (cmp < 0) |
4194 | { | |
4195 | if (global) | |
4196 | break; | |
4197 | } | |
4198 | else if (cmp == 0 | |
4199 | && is_name_suffix (SYMBOL_LINKAGE_NAME (psym) | |
76a01679 | 4200 | + name_len + 5)) |
96d887e8 PH |
4201 | return psym; |
4202 | } | |
4203 | i += 1; | |
4204 | } | |
4205 | } | |
4206 | return NULL; | |
4c4b4cd2 PH |
4207 | } |
4208 | ||
96d887e8 PH |
4209 | /* Return a minimal symbol matching NAME according to Ada decoding |
4210 | rules. Returns NULL if there is no such minimal symbol. Names | |
4211 | prefixed with "standard__" are handled specially: "standard__" is | |
4212 | first stripped off, and only static and global symbols are searched. */ | |
4c4b4cd2 | 4213 | |
96d887e8 PH |
4214 | struct minimal_symbol * |
4215 | ada_lookup_simple_minsym (const char *name) | |
4c4b4cd2 | 4216 | { |
4c4b4cd2 | 4217 | struct objfile *objfile; |
96d887e8 PH |
4218 | struct minimal_symbol *msymbol; |
4219 | int wild_match; | |
4c4b4cd2 | 4220 | |
96d887e8 | 4221 | if (strncmp (name, "standard__", sizeof ("standard__") - 1) == 0) |
4c4b4cd2 | 4222 | { |
96d887e8 | 4223 | name += sizeof ("standard__") - 1; |
4c4b4cd2 | 4224 | wild_match = 0; |
4c4b4cd2 PH |
4225 | } |
4226 | else | |
96d887e8 | 4227 | wild_match = (strstr (name, "__") == NULL); |
4c4b4cd2 | 4228 | |
96d887e8 PH |
4229 | ALL_MSYMBOLS (objfile, msymbol) |
4230 | { | |
4231 | if (ada_match_name (SYMBOL_LINKAGE_NAME (msymbol), name, wild_match) | |
4232 | && MSYMBOL_TYPE (msymbol) != mst_solib_trampoline) | |
4233 | return msymbol; | |
4234 | } | |
4c4b4cd2 | 4235 | |
96d887e8 PH |
4236 | return NULL; |
4237 | } | |
4c4b4cd2 | 4238 | |
96d887e8 PH |
4239 | /* For all subprograms that statically enclose the subprogram of the |
4240 | selected frame, add symbols matching identifier NAME in DOMAIN | |
4241 | and their blocks to the list of data in OBSTACKP, as for | |
4242 | ada_add_block_symbols (q.v.). If WILD, treat as NAME with a | |
4243 | wildcard prefix. */ | |
4c4b4cd2 | 4244 | |
96d887e8 PH |
4245 | static void |
4246 | add_symbols_from_enclosing_procs (struct obstack *obstackp, | |
76a01679 | 4247 | const char *name, domain_enum namespace, |
96d887e8 PH |
4248 | int wild_match) |
4249 | { | |
96d887e8 | 4250 | } |
14f9c5c9 | 4251 | |
96d887e8 PH |
4252 | /* True if TYPE is definitely an artificial type supplied to a symbol |
4253 | for which no debugging information was given in the symbol file. */ | |
14f9c5c9 | 4254 | |
96d887e8 PH |
4255 | static int |
4256 | is_nondebugging_type (struct type *type) | |
4257 | { | |
4258 | char *name = ada_type_name (type); | |
4259 | return (name != NULL && strcmp (name, "<variable, no debug info>") == 0); | |
4260 | } | |
4c4b4cd2 | 4261 | |
96d887e8 PH |
4262 | /* Remove any non-debugging symbols in SYMS[0 .. NSYMS-1] that definitely |
4263 | duplicate other symbols in the list (The only case I know of where | |
4264 | this happens is when object files containing stabs-in-ecoff are | |
4265 | linked with files containing ordinary ecoff debugging symbols (or no | |
4266 | debugging symbols)). Modifies SYMS to squeeze out deleted entries. | |
4267 | Returns the number of items in the modified list. */ | |
4c4b4cd2 | 4268 | |
96d887e8 PH |
4269 | static int |
4270 | remove_extra_symbols (struct ada_symbol_info *syms, int nsyms) | |
4271 | { | |
4272 | int i, j; | |
4c4b4cd2 | 4273 | |
96d887e8 PH |
4274 | i = 0; |
4275 | while (i < nsyms) | |
4276 | { | |
339c13b6 JB |
4277 | int remove = 0; |
4278 | ||
4279 | /* If two symbols have the same name and one of them is a stub type, | |
4280 | the get rid of the stub. */ | |
4281 | ||
4282 | if (TYPE_STUB (SYMBOL_TYPE (syms[i].sym)) | |
4283 | && SYMBOL_LINKAGE_NAME (syms[i].sym) != NULL) | |
4284 | { | |
4285 | for (j = 0; j < nsyms; j++) | |
4286 | { | |
4287 | if (j != i | |
4288 | && !TYPE_STUB (SYMBOL_TYPE (syms[j].sym)) | |
4289 | && SYMBOL_LINKAGE_NAME (syms[j].sym) != NULL | |
4290 | && strcmp (SYMBOL_LINKAGE_NAME (syms[i].sym), | |
4291 | SYMBOL_LINKAGE_NAME (syms[j].sym)) == 0) | |
4292 | remove = 1; | |
4293 | } | |
4294 | } | |
4295 | ||
4296 | /* Two symbols with the same name, same class and same address | |
4297 | should be identical. */ | |
4298 | ||
4299 | else if (SYMBOL_LINKAGE_NAME (syms[i].sym) != NULL | |
96d887e8 PH |
4300 | && SYMBOL_CLASS (syms[i].sym) == LOC_STATIC |
4301 | && is_nondebugging_type (SYMBOL_TYPE (syms[i].sym))) | |
4302 | { | |
4303 | for (j = 0; j < nsyms; j += 1) | |
4304 | { | |
4305 | if (i != j | |
4306 | && SYMBOL_LINKAGE_NAME (syms[j].sym) != NULL | |
4307 | && strcmp (SYMBOL_LINKAGE_NAME (syms[i].sym), | |
76a01679 | 4308 | SYMBOL_LINKAGE_NAME (syms[j].sym)) == 0 |
96d887e8 PH |
4309 | && SYMBOL_CLASS (syms[i].sym) == SYMBOL_CLASS (syms[j].sym) |
4310 | && SYMBOL_VALUE_ADDRESS (syms[i].sym) | |
4311 | == SYMBOL_VALUE_ADDRESS (syms[j].sym)) | |
339c13b6 | 4312 | remove = 1; |
4c4b4cd2 | 4313 | } |
4c4b4cd2 | 4314 | } |
339c13b6 JB |
4315 | |
4316 | if (remove) | |
4317 | { | |
4318 | for (j = i + 1; j < nsyms; j += 1) | |
4319 | syms[j - 1] = syms[j]; | |
4320 | nsyms -= 1; | |
4321 | } | |
4322 | ||
96d887e8 | 4323 | i += 1; |
14f9c5c9 | 4324 | } |
96d887e8 | 4325 | return nsyms; |
14f9c5c9 AS |
4326 | } |
4327 | ||
96d887e8 PH |
4328 | /* Given a type that corresponds to a renaming entity, use the type name |
4329 | to extract the scope (package name or function name, fully qualified, | |
4330 | and following the GNAT encoding convention) where this renaming has been | |
4331 | defined. The string returned needs to be deallocated after use. */ | |
4c4b4cd2 | 4332 | |
96d887e8 PH |
4333 | static char * |
4334 | xget_renaming_scope (struct type *renaming_type) | |
14f9c5c9 | 4335 | { |
96d887e8 PH |
4336 | /* The renaming types adhere to the following convention: |
4337 | <scope>__<rename>___<XR extension>. | |
4338 | So, to extract the scope, we search for the "___XR" extension, | |
4339 | and then backtrack until we find the first "__". */ | |
76a01679 | 4340 | |
96d887e8 PH |
4341 | const char *name = type_name_no_tag (renaming_type); |
4342 | char *suffix = strstr (name, "___XR"); | |
4343 | char *last; | |
4344 | int scope_len; | |
4345 | char *scope; | |
14f9c5c9 | 4346 | |
96d887e8 PH |
4347 | /* Now, backtrack a bit until we find the first "__". Start looking |
4348 | at suffix - 3, as the <rename> part is at least one character long. */ | |
14f9c5c9 | 4349 | |
96d887e8 PH |
4350 | for (last = suffix - 3; last > name; last--) |
4351 | if (last[0] == '_' && last[1] == '_') | |
4352 | break; | |
76a01679 | 4353 | |
96d887e8 | 4354 | /* Make a copy of scope and return it. */ |
14f9c5c9 | 4355 | |
96d887e8 PH |
4356 | scope_len = last - name; |
4357 | scope = (char *) xmalloc ((scope_len + 1) * sizeof (char)); | |
14f9c5c9 | 4358 | |
96d887e8 PH |
4359 | strncpy (scope, name, scope_len); |
4360 | scope[scope_len] = '\0'; | |
4c4b4cd2 | 4361 | |
96d887e8 | 4362 | return scope; |
4c4b4cd2 PH |
4363 | } |
4364 | ||
96d887e8 | 4365 | /* Return nonzero if NAME corresponds to a package name. */ |
4c4b4cd2 | 4366 | |
96d887e8 PH |
4367 | static int |
4368 | is_package_name (const char *name) | |
4c4b4cd2 | 4369 | { |
96d887e8 PH |
4370 | /* Here, We take advantage of the fact that no symbols are generated |
4371 | for packages, while symbols are generated for each function. | |
4372 | So the condition for NAME represent a package becomes equivalent | |
4373 | to NAME not existing in our list of symbols. There is only one | |
4374 | small complication with library-level functions (see below). */ | |
4c4b4cd2 | 4375 | |
96d887e8 | 4376 | char *fun_name; |
76a01679 | 4377 | |
96d887e8 PH |
4378 | /* If it is a function that has not been defined at library level, |
4379 | then we should be able to look it up in the symbols. */ | |
4380 | if (standard_lookup (name, NULL, VAR_DOMAIN) != NULL) | |
4381 | return 0; | |
14f9c5c9 | 4382 | |
96d887e8 PH |
4383 | /* Library-level function names start with "_ada_". See if function |
4384 | "_ada_" followed by NAME can be found. */ | |
14f9c5c9 | 4385 | |
96d887e8 | 4386 | /* Do a quick check that NAME does not contain "__", since library-level |
e1d5a0d2 | 4387 | functions names cannot contain "__" in them. */ |
96d887e8 PH |
4388 | if (strstr (name, "__") != NULL) |
4389 | return 0; | |
4c4b4cd2 | 4390 | |
b435e160 | 4391 | fun_name = xstrprintf ("_ada_%s", name); |
14f9c5c9 | 4392 | |
96d887e8 PH |
4393 | return (standard_lookup (fun_name, NULL, VAR_DOMAIN) == NULL); |
4394 | } | |
14f9c5c9 | 4395 | |
96d887e8 | 4396 | /* Return nonzero if SYM corresponds to a renaming entity that is |
aeb5907d | 4397 | not visible from FUNCTION_NAME. */ |
14f9c5c9 | 4398 | |
96d887e8 | 4399 | static int |
aeb5907d | 4400 | old_renaming_is_invisible (const struct symbol *sym, char *function_name) |
96d887e8 | 4401 | { |
aeb5907d JB |
4402 | char *scope; |
4403 | ||
4404 | if (SYMBOL_CLASS (sym) != LOC_TYPEDEF) | |
4405 | return 0; | |
4406 | ||
4407 | scope = xget_renaming_scope (SYMBOL_TYPE (sym)); | |
d2e4a39e | 4408 | |
96d887e8 | 4409 | make_cleanup (xfree, scope); |
14f9c5c9 | 4410 | |
96d887e8 PH |
4411 | /* If the rename has been defined in a package, then it is visible. */ |
4412 | if (is_package_name (scope)) | |
aeb5907d | 4413 | return 0; |
14f9c5c9 | 4414 | |
96d887e8 PH |
4415 | /* Check that the rename is in the current function scope by checking |
4416 | that its name starts with SCOPE. */ | |
76a01679 | 4417 | |
96d887e8 PH |
4418 | /* If the function name starts with "_ada_", it means that it is |
4419 | a library-level function. Strip this prefix before doing the | |
4420 | comparison, as the encoding for the renaming does not contain | |
4421 | this prefix. */ | |
4422 | if (strncmp (function_name, "_ada_", 5) == 0) | |
4423 | function_name += 5; | |
f26caa11 | 4424 | |
aeb5907d | 4425 | return (strncmp (function_name, scope, strlen (scope)) != 0); |
f26caa11 PH |
4426 | } |
4427 | ||
aeb5907d JB |
4428 | /* Remove entries from SYMS that corresponds to a renaming entity that |
4429 | is not visible from the function associated with CURRENT_BLOCK or | |
4430 | that is superfluous due to the presence of more specific renaming | |
4431 | information. Places surviving symbols in the initial entries of | |
4432 | SYMS and returns the number of surviving symbols. | |
96d887e8 PH |
4433 | |
4434 | Rationale: | |
aeb5907d JB |
4435 | First, in cases where an object renaming is implemented as a |
4436 | reference variable, GNAT may produce both the actual reference | |
4437 | variable and the renaming encoding. In this case, we discard the | |
4438 | latter. | |
4439 | ||
4440 | Second, GNAT emits a type following a specified encoding for each renaming | |
96d887e8 PH |
4441 | entity. Unfortunately, STABS currently does not support the definition |
4442 | of types that are local to a given lexical block, so all renamings types | |
4443 | are emitted at library level. As a consequence, if an application | |
4444 | contains two renaming entities using the same name, and a user tries to | |
4445 | print the value of one of these entities, the result of the ada symbol | |
4446 | lookup will also contain the wrong renaming type. | |
f26caa11 | 4447 | |
96d887e8 PH |
4448 | This function partially covers for this limitation by attempting to |
4449 | remove from the SYMS list renaming symbols that should be visible | |
4450 | from CURRENT_BLOCK. However, there does not seem be a 100% reliable | |
4451 | method with the current information available. The implementation | |
4452 | below has a couple of limitations (FIXME: brobecker-2003-05-12): | |
4453 | ||
4454 | - When the user tries to print a rename in a function while there | |
4455 | is another rename entity defined in a package: Normally, the | |
4456 | rename in the function has precedence over the rename in the | |
4457 | package, so the latter should be removed from the list. This is | |
4458 | currently not the case. | |
4459 | ||
4460 | - This function will incorrectly remove valid renames if | |
4461 | the CURRENT_BLOCK corresponds to a function which symbol name | |
4462 | has been changed by an "Export" pragma. As a consequence, | |
4463 | the user will be unable to print such rename entities. */ | |
4c4b4cd2 | 4464 | |
14f9c5c9 | 4465 | static int |
aeb5907d JB |
4466 | remove_irrelevant_renamings (struct ada_symbol_info *syms, |
4467 | int nsyms, const struct block *current_block) | |
4c4b4cd2 PH |
4468 | { |
4469 | struct symbol *current_function; | |
4470 | char *current_function_name; | |
4471 | int i; | |
aeb5907d JB |
4472 | int is_new_style_renaming; |
4473 | ||
4474 | /* If there is both a renaming foo___XR... encoded as a variable and | |
4475 | a simple variable foo in the same block, discard the latter. | |
4476 | First, zero out such symbols, then compress. */ | |
4477 | is_new_style_renaming = 0; | |
4478 | for (i = 0; i < nsyms; i += 1) | |
4479 | { | |
4480 | struct symbol *sym = syms[i].sym; | |
4481 | struct block *block = syms[i].block; | |
4482 | const char *name; | |
4483 | const char *suffix; | |
4484 | ||
4485 | if (sym == NULL || SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
4486 | continue; | |
4487 | name = SYMBOL_LINKAGE_NAME (sym); | |
4488 | suffix = strstr (name, "___XR"); | |
4489 | ||
4490 | if (suffix != NULL) | |
4491 | { | |
4492 | int name_len = suffix - name; | |
4493 | int j; | |
4494 | is_new_style_renaming = 1; | |
4495 | for (j = 0; j < nsyms; j += 1) | |
4496 | if (i != j && syms[j].sym != NULL | |
4497 | && strncmp (name, SYMBOL_LINKAGE_NAME (syms[j].sym), | |
4498 | name_len) == 0 | |
4499 | && block == syms[j].block) | |
4500 | syms[j].sym = NULL; | |
4501 | } | |
4502 | } | |
4503 | if (is_new_style_renaming) | |
4504 | { | |
4505 | int j, k; | |
4506 | ||
4507 | for (j = k = 0; j < nsyms; j += 1) | |
4508 | if (syms[j].sym != NULL) | |
4509 | { | |
4510 | syms[k] = syms[j]; | |
4511 | k += 1; | |
4512 | } | |
4513 | return k; | |
4514 | } | |
4c4b4cd2 PH |
4515 | |
4516 | /* Extract the function name associated to CURRENT_BLOCK. | |
4517 | Abort if unable to do so. */ | |
76a01679 | 4518 | |
4c4b4cd2 PH |
4519 | if (current_block == NULL) |
4520 | return nsyms; | |
76a01679 | 4521 | |
7f0df278 | 4522 | current_function = block_linkage_function (current_block); |
4c4b4cd2 PH |
4523 | if (current_function == NULL) |
4524 | return nsyms; | |
4525 | ||
4526 | current_function_name = SYMBOL_LINKAGE_NAME (current_function); | |
4527 | if (current_function_name == NULL) | |
4528 | return nsyms; | |
4529 | ||
4530 | /* Check each of the symbols, and remove it from the list if it is | |
4531 | a type corresponding to a renaming that is out of the scope of | |
4532 | the current block. */ | |
4533 | ||
4534 | i = 0; | |
4535 | while (i < nsyms) | |
4536 | { | |
aeb5907d JB |
4537 | if (ada_parse_renaming (syms[i].sym, NULL, NULL, NULL) |
4538 | == ADA_OBJECT_RENAMING | |
4539 | && old_renaming_is_invisible (syms[i].sym, current_function_name)) | |
4c4b4cd2 PH |
4540 | { |
4541 | int j; | |
aeb5907d | 4542 | for (j = i + 1; j < nsyms; j += 1) |
76a01679 | 4543 | syms[j - 1] = syms[j]; |
4c4b4cd2 PH |
4544 | nsyms -= 1; |
4545 | } | |
4546 | else | |
4547 | i += 1; | |
4548 | } | |
4549 | ||
4550 | return nsyms; | |
4551 | } | |
4552 | ||
339c13b6 JB |
4553 | /* Add to OBSTACKP all symbols from BLOCK (and its super-blocks) |
4554 | whose name and domain match NAME and DOMAIN respectively. | |
4555 | If no match was found, then extend the search to "enclosing" | |
4556 | routines (in other words, if we're inside a nested function, | |
4557 | search the symbols defined inside the enclosing functions). | |
4558 | ||
4559 | Note: This function assumes that OBSTACKP has 0 (zero) element in it. */ | |
4560 | ||
4561 | static void | |
4562 | ada_add_local_symbols (struct obstack *obstackp, const char *name, | |
4563 | struct block *block, domain_enum domain, | |
4564 | int wild_match) | |
4565 | { | |
4566 | int block_depth = 0; | |
4567 | ||
4568 | while (block != NULL) | |
4569 | { | |
4570 | block_depth += 1; | |
4571 | ada_add_block_symbols (obstackp, block, name, domain, NULL, wild_match); | |
4572 | ||
4573 | /* If we found a non-function match, assume that's the one. */ | |
4574 | if (is_nonfunction (defns_collected (obstackp, 0), | |
4575 | num_defns_collected (obstackp))) | |
4576 | return; | |
4577 | ||
4578 | block = BLOCK_SUPERBLOCK (block); | |
4579 | } | |
4580 | ||
4581 | /* If no luck so far, try to find NAME as a local symbol in some lexically | |
4582 | enclosing subprogram. */ | |
4583 | if (num_defns_collected (obstackp) == 0 && block_depth > 2) | |
4584 | add_symbols_from_enclosing_procs (obstackp, name, domain, wild_match); | |
4585 | } | |
4586 | ||
4587 | /* Add to OBSTACKP all non-local symbols whose name and domain match | |
4588 | NAME and DOMAIN respectively. The search is performed on GLOBAL_BLOCK | |
4589 | symbols if GLOBAL is non-zero, or on STATIC_BLOCK symbols otherwise. */ | |
4590 | ||
4591 | static void | |
4592 | ada_add_non_local_symbols (struct obstack *obstackp, const char *name, | |
4593 | domain_enum domain, int global, | |
4594 | int wild_match) | |
4595 | { | |
4596 | struct objfile *objfile; | |
4597 | struct partial_symtab *ps; | |
4598 | ||
4599 | ALL_PSYMTABS (objfile, ps) | |
4600 | { | |
4601 | QUIT; | |
4602 | if (ps->readin | |
4603 | || ada_lookup_partial_symbol (ps, name, global, domain, wild_match)) | |
4604 | { | |
4605 | struct symtab *s = PSYMTAB_TO_SYMTAB (ps); | |
4606 | const int block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; | |
4607 | ||
4608 | if (s == NULL || !s->primary) | |
4609 | continue; | |
4610 | ada_add_block_symbols (obstackp, | |
4611 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), block_kind), | |
4612 | name, domain, objfile, wild_match); | |
4613 | } | |
4614 | } | |
4615 | } | |
4616 | ||
4c4b4cd2 PH |
4617 | /* Find symbols in DOMAIN matching NAME0, in BLOCK0 and enclosing |
4618 | scope and in global scopes, returning the number of matches. Sets | |
6c9353d3 | 4619 | *RESULTS to point to a vector of (SYM,BLOCK) tuples, |
4c4b4cd2 PH |
4620 | indicating the symbols found and the blocks and symbol tables (if |
4621 | any) in which they were found. This vector are transient---good only to | |
4622 | the next call of ada_lookup_symbol_list. Any non-function/non-enumeral | |
4623 | symbol match within the nest of blocks whose innermost member is BLOCK0, | |
4624 | is the one match returned (no other matches in that or | |
4625 | enclosing blocks is returned). If there are any matches in or | |
4626 | surrounding BLOCK0, then these alone are returned. Otherwise, the | |
4627 | search extends to global and file-scope (static) symbol tables. | |
4628 | Names prefixed with "standard__" are handled specially: "standard__" | |
4629 | is first stripped off, and only static and global symbols are searched. */ | |
14f9c5c9 AS |
4630 | |
4631 | int | |
4c4b4cd2 | 4632 | ada_lookup_symbol_list (const char *name0, const struct block *block0, |
76a01679 JB |
4633 | domain_enum namespace, |
4634 | struct ada_symbol_info **results) | |
14f9c5c9 AS |
4635 | { |
4636 | struct symbol *sym; | |
14f9c5c9 | 4637 | struct block *block; |
4c4b4cd2 | 4638 | const char *name; |
4c4b4cd2 | 4639 | int wild_match; |
14f9c5c9 | 4640 | int cacheIfUnique; |
4c4b4cd2 | 4641 | int ndefns; |
14f9c5c9 | 4642 | |
4c4b4cd2 PH |
4643 | obstack_free (&symbol_list_obstack, NULL); |
4644 | obstack_init (&symbol_list_obstack); | |
14f9c5c9 | 4645 | |
14f9c5c9 AS |
4646 | cacheIfUnique = 0; |
4647 | ||
4648 | /* Search specified block and its superiors. */ | |
4649 | ||
4c4b4cd2 PH |
4650 | wild_match = (strstr (name0, "__") == NULL); |
4651 | name = name0; | |
76a01679 JB |
4652 | block = (struct block *) block0; /* FIXME: No cast ought to be |
4653 | needed, but adding const will | |
4654 | have a cascade effect. */ | |
339c13b6 JB |
4655 | |
4656 | /* Special case: If the user specifies a symbol name inside package | |
4657 | Standard, do a non-wild matching of the symbol name without | |
4658 | the "standard__" prefix. This was primarily introduced in order | |
4659 | to allow the user to specifically access the standard exceptions | |
4660 | using, for instance, Standard.Constraint_Error when Constraint_Error | |
4661 | is ambiguous (due to the user defining its own Constraint_Error | |
4662 | entity inside its program). */ | |
4c4b4cd2 PH |
4663 | if (strncmp (name0, "standard__", sizeof ("standard__") - 1) == 0) |
4664 | { | |
4665 | wild_match = 0; | |
4666 | block = NULL; | |
4667 | name = name0 + sizeof ("standard__") - 1; | |
4668 | } | |
4669 | ||
339c13b6 | 4670 | /* Check the non-global symbols. If we have ANY match, then we're done. */ |
14f9c5c9 | 4671 | |
339c13b6 JB |
4672 | ada_add_local_symbols (&symbol_list_obstack, name, block, namespace, |
4673 | wild_match); | |
4c4b4cd2 | 4674 | if (num_defns_collected (&symbol_list_obstack) > 0) |
14f9c5c9 | 4675 | goto done; |
d2e4a39e | 4676 | |
339c13b6 JB |
4677 | /* No non-global symbols found. Check our cache to see if we have |
4678 | already performed this search before. If we have, then return | |
4679 | the same result. */ | |
4680 | ||
14f9c5c9 | 4681 | cacheIfUnique = 1; |
2570f2b7 | 4682 | if (lookup_cached_symbol (name0, namespace, &sym, &block)) |
4c4b4cd2 PH |
4683 | { |
4684 | if (sym != NULL) | |
2570f2b7 | 4685 | add_defn_to_vec (&symbol_list_obstack, sym, block); |
4c4b4cd2 PH |
4686 | goto done; |
4687 | } | |
14f9c5c9 | 4688 | |
339c13b6 JB |
4689 | /* Search symbols from all global blocks. */ |
4690 | ||
4691 | ada_add_non_local_symbols (&symbol_list_obstack, name, namespace, 1, | |
4692 | wild_match); | |
d2e4a39e | 4693 | |
4c4b4cd2 | 4694 | /* Now add symbols from all per-file blocks if we've gotten no hits |
339c13b6 | 4695 | (not strictly correct, but perhaps better than an error). */ |
d2e4a39e | 4696 | |
4c4b4cd2 | 4697 | if (num_defns_collected (&symbol_list_obstack) == 0) |
339c13b6 JB |
4698 | ada_add_non_local_symbols (&symbol_list_obstack, name, namespace, 0, |
4699 | wild_match); | |
14f9c5c9 | 4700 | |
4c4b4cd2 PH |
4701 | done: |
4702 | ndefns = num_defns_collected (&symbol_list_obstack); | |
4703 | *results = defns_collected (&symbol_list_obstack, 1); | |
4704 | ||
4705 | ndefns = remove_extra_symbols (*results, ndefns); | |
4706 | ||
d2e4a39e | 4707 | if (ndefns == 0) |
2570f2b7 | 4708 | cache_symbol (name0, namespace, NULL, NULL); |
14f9c5c9 | 4709 | |
4c4b4cd2 | 4710 | if (ndefns == 1 && cacheIfUnique) |
2570f2b7 | 4711 | cache_symbol (name0, namespace, (*results)[0].sym, (*results)[0].block); |
14f9c5c9 | 4712 | |
aeb5907d | 4713 | ndefns = remove_irrelevant_renamings (*results, ndefns, block0); |
14f9c5c9 | 4714 | |
14f9c5c9 AS |
4715 | return ndefns; |
4716 | } | |
4717 | ||
d2e4a39e | 4718 | struct symbol * |
aeb5907d | 4719 | ada_lookup_encoded_symbol (const char *name, const struct block *block0, |
21b556f4 | 4720 | domain_enum namespace, struct block **block_found) |
14f9c5c9 | 4721 | { |
4c4b4cd2 | 4722 | struct ada_symbol_info *candidates; |
14f9c5c9 AS |
4723 | int n_candidates; |
4724 | ||
aeb5907d | 4725 | n_candidates = ada_lookup_symbol_list (name, block0, namespace, &candidates); |
14f9c5c9 AS |
4726 | |
4727 | if (n_candidates == 0) | |
4728 | return NULL; | |
4c4b4cd2 | 4729 | |
aeb5907d JB |
4730 | if (block_found != NULL) |
4731 | *block_found = candidates[0].block; | |
4c4b4cd2 | 4732 | |
21b556f4 | 4733 | return fixup_symbol_section (candidates[0].sym, NULL); |
aeb5907d JB |
4734 | } |
4735 | ||
4736 | /* Return a symbol in DOMAIN matching NAME, in BLOCK0 and enclosing | |
4737 | scope and in global scopes, or NULL if none. NAME is folded and | |
4738 | encoded first. Otherwise, the result is as for ada_lookup_symbol_list, | |
4739 | choosing the first symbol if there are multiple choices. | |
4740 | *IS_A_FIELD_OF_THIS is set to 0 and *SYMTAB is set to the symbol | |
4741 | table in which the symbol was found (in both cases, these | |
4742 | assignments occur only if the pointers are non-null). */ | |
4743 | struct symbol * | |
4744 | ada_lookup_symbol (const char *name, const struct block *block0, | |
21b556f4 | 4745 | domain_enum namespace, int *is_a_field_of_this) |
aeb5907d JB |
4746 | { |
4747 | if (is_a_field_of_this != NULL) | |
4748 | *is_a_field_of_this = 0; | |
4749 | ||
4750 | return | |
4751 | ada_lookup_encoded_symbol (ada_encode (ada_fold_name (name)), | |
21b556f4 | 4752 | block0, namespace, NULL); |
4c4b4cd2 | 4753 | } |
14f9c5c9 | 4754 | |
4c4b4cd2 PH |
4755 | static struct symbol * |
4756 | ada_lookup_symbol_nonlocal (const char *name, | |
76a01679 JB |
4757 | const char *linkage_name, |
4758 | const struct block *block, | |
21b556f4 | 4759 | const domain_enum domain) |
4c4b4cd2 PH |
4760 | { |
4761 | if (linkage_name == NULL) | |
4762 | linkage_name = name; | |
76a01679 | 4763 | return ada_lookup_symbol (linkage_name, block_static_block (block), domain, |
21b556f4 | 4764 | NULL); |
14f9c5c9 AS |
4765 | } |
4766 | ||
4767 | ||
4c4b4cd2 PH |
4768 | /* True iff STR is a possible encoded suffix of a normal Ada name |
4769 | that is to be ignored for matching purposes. Suffixes of parallel | |
4770 | names (e.g., XVE) are not included here. Currently, the possible suffixes | |
5823c3ef | 4771 | are given by any of the regular expressions: |
4c4b4cd2 | 4772 | |
babe1480 JB |
4773 | [.$][0-9]+ [nested subprogram suffix, on platforms such as GNU/Linux] |
4774 | ___[0-9]+ [nested subprogram suffix, on platforms such as HP/UX] | |
4775 | _E[0-9]+[bs]$ [protected object entry suffixes] | |
61ee279c | 4776 | (X[nb]*)?((\$|__)[0-9](_?[0-9]+)|___(JM|LJM|X([FDBUP].*|R[^T]?)))?$ |
babe1480 JB |
4777 | |
4778 | Also, any leading "__[0-9]+" sequence is skipped before the suffix | |
4779 | match is performed. This sequence is used to differentiate homonyms, | |
4780 | is an optional part of a valid name suffix. */ | |
4c4b4cd2 | 4781 | |
14f9c5c9 | 4782 | static int |
d2e4a39e | 4783 | is_name_suffix (const char *str) |
14f9c5c9 AS |
4784 | { |
4785 | int k; | |
4c4b4cd2 PH |
4786 | const char *matching; |
4787 | const int len = strlen (str); | |
4788 | ||
babe1480 JB |
4789 | /* Skip optional leading __[0-9]+. */ |
4790 | ||
4c4b4cd2 PH |
4791 | if (len > 3 && str[0] == '_' && str[1] == '_' && isdigit (str[2])) |
4792 | { | |
babe1480 JB |
4793 | str += 3; |
4794 | while (isdigit (str[0])) | |
4795 | str += 1; | |
4c4b4cd2 | 4796 | } |
babe1480 JB |
4797 | |
4798 | /* [.$][0-9]+ */ | |
4c4b4cd2 | 4799 | |
babe1480 | 4800 | if (str[0] == '.' || str[0] == '$') |
4c4b4cd2 | 4801 | { |
babe1480 | 4802 | matching = str + 1; |
4c4b4cd2 PH |
4803 | while (isdigit (matching[0])) |
4804 | matching += 1; | |
4805 | if (matching[0] == '\0') | |
4806 | return 1; | |
4807 | } | |
4808 | ||
4809 | /* ___[0-9]+ */ | |
babe1480 | 4810 | |
4c4b4cd2 PH |
4811 | if (len > 3 && str[0] == '_' && str[1] == '_' && str[2] == '_') |
4812 | { | |
4813 | matching = str + 3; | |
4814 | while (isdigit (matching[0])) | |
4815 | matching += 1; | |
4816 | if (matching[0] == '\0') | |
4817 | return 1; | |
4818 | } | |
4819 | ||
529cad9c PH |
4820 | #if 0 |
4821 | /* FIXME: brobecker/2005-09-23: Protected Object subprograms end | |
4822 | with a N at the end. Unfortunately, the compiler uses the same | |
4823 | convention for other internal types it creates. So treating | |
4824 | all entity names that end with an "N" as a name suffix causes | |
4825 | some regressions. For instance, consider the case of an enumerated | |
4826 | type. To support the 'Image attribute, it creates an array whose | |
4827 | name ends with N. | |
4828 | Having a single character like this as a suffix carrying some | |
4829 | information is a bit risky. Perhaps we should change the encoding | |
4830 | to be something like "_N" instead. In the meantime, do not do | |
4831 | the following check. */ | |
4832 | /* Protected Object Subprograms */ | |
4833 | if (len == 1 && str [0] == 'N') | |
4834 | return 1; | |
4835 | #endif | |
4836 | ||
4837 | /* _E[0-9]+[bs]$ */ | |
4838 | if (len > 3 && str[0] == '_' && str [1] == 'E' && isdigit (str[2])) | |
4839 | { | |
4840 | matching = str + 3; | |
4841 | while (isdigit (matching[0])) | |
4842 | matching += 1; | |
4843 | if ((matching[0] == 'b' || matching[0] == 's') | |
4844 | && matching [1] == '\0') | |
4845 | return 1; | |
4846 | } | |
4847 | ||
4c4b4cd2 PH |
4848 | /* ??? We should not modify STR directly, as we are doing below. This |
4849 | is fine in this case, but may become problematic later if we find | |
4850 | that this alternative did not work, and want to try matching | |
4851 | another one from the begining of STR. Since we modified it, we | |
4852 | won't be able to find the begining of the string anymore! */ | |
14f9c5c9 AS |
4853 | if (str[0] == 'X') |
4854 | { | |
4855 | str += 1; | |
d2e4a39e | 4856 | while (str[0] != '_' && str[0] != '\0') |
4c4b4cd2 PH |
4857 | { |
4858 | if (str[0] != 'n' && str[0] != 'b') | |
4859 | return 0; | |
4860 | str += 1; | |
4861 | } | |
14f9c5c9 | 4862 | } |
babe1480 | 4863 | |
14f9c5c9 AS |
4864 | if (str[0] == '\000') |
4865 | return 1; | |
babe1480 | 4866 | |
d2e4a39e | 4867 | if (str[0] == '_') |
14f9c5c9 AS |
4868 | { |
4869 | if (str[1] != '_' || str[2] == '\000') | |
4c4b4cd2 | 4870 | return 0; |
d2e4a39e | 4871 | if (str[2] == '_') |
4c4b4cd2 | 4872 | { |
61ee279c PH |
4873 | if (strcmp (str + 3, "JM") == 0) |
4874 | return 1; | |
4875 | /* FIXME: brobecker/2004-09-30: GNAT will soon stop using | |
4876 | the LJM suffix in favor of the JM one. But we will | |
4877 | still accept LJM as a valid suffix for a reasonable | |
4878 | amount of time, just to allow ourselves to debug programs | |
4879 | compiled using an older version of GNAT. */ | |
4c4b4cd2 PH |
4880 | if (strcmp (str + 3, "LJM") == 0) |
4881 | return 1; | |
4882 | if (str[3] != 'X') | |
4883 | return 0; | |
1265e4aa JB |
4884 | if (str[4] == 'F' || str[4] == 'D' || str[4] == 'B' |
4885 | || str[4] == 'U' || str[4] == 'P') | |
4c4b4cd2 PH |
4886 | return 1; |
4887 | if (str[4] == 'R' && str[5] != 'T') | |
4888 | return 1; | |
4889 | return 0; | |
4890 | } | |
4891 | if (!isdigit (str[2])) | |
4892 | return 0; | |
4893 | for (k = 3; str[k] != '\0'; k += 1) | |
4894 | if (!isdigit (str[k]) && str[k] != '_') | |
4895 | return 0; | |
14f9c5c9 AS |
4896 | return 1; |
4897 | } | |
4c4b4cd2 | 4898 | if (str[0] == '$' && isdigit (str[1])) |
14f9c5c9 | 4899 | { |
4c4b4cd2 PH |
4900 | for (k = 2; str[k] != '\0'; k += 1) |
4901 | if (!isdigit (str[k]) && str[k] != '_') | |
4902 | return 0; | |
14f9c5c9 AS |
4903 | return 1; |
4904 | } | |
4905 | return 0; | |
4906 | } | |
d2e4a39e | 4907 | |
aeb5907d JB |
4908 | /* Return non-zero if the string starting at NAME and ending before |
4909 | NAME_END contains no capital letters. */ | |
529cad9c PH |
4910 | |
4911 | static int | |
4912 | is_valid_name_for_wild_match (const char *name0) | |
4913 | { | |
4914 | const char *decoded_name = ada_decode (name0); | |
4915 | int i; | |
4916 | ||
5823c3ef JB |
4917 | /* If the decoded name starts with an angle bracket, it means that |
4918 | NAME0 does not follow the GNAT encoding format. It should then | |
4919 | not be allowed as a possible wild match. */ | |
4920 | if (decoded_name[0] == '<') | |
4921 | return 0; | |
4922 | ||
529cad9c PH |
4923 | for (i=0; decoded_name[i] != '\0'; i++) |
4924 | if (isalpha (decoded_name[i]) && !islower (decoded_name[i])) | |
4925 | return 0; | |
4926 | ||
4927 | return 1; | |
4928 | } | |
4929 | ||
4c4b4cd2 PH |
4930 | /* True if NAME represents a name of the form A1.A2....An, n>=1 and |
4931 | PATN[0..PATN_LEN-1] = Ak.Ak+1.....An for some k >= 1. Ignores | |
4932 | informational suffixes of NAME (i.e., for which is_name_suffix is | |
4933 | true). */ | |
4934 | ||
14f9c5c9 | 4935 | static int |
4c4b4cd2 | 4936 | wild_match (const char *patn0, int patn_len, const char *name0) |
14f9c5c9 | 4937 | { |
5823c3ef JB |
4938 | char* match; |
4939 | const char* start; | |
4940 | start = name0; | |
4941 | while (1) | |
14f9c5c9 | 4942 | { |
5823c3ef JB |
4943 | match = strstr (start, patn0); |
4944 | if (match == NULL) | |
4945 | return 0; | |
4946 | if ((match == name0 | |
4947 | || match[-1] == '.' | |
4948 | || (match > name0 + 1 && match[-1] == '_' && match[-2] == '_') | |
4949 | || (match == name0 + 5 && strncmp ("_ada_", name0, 5) == 0)) | |
4950 | && is_name_suffix (match + patn_len)) | |
4951 | return (match == name0 || is_valid_name_for_wild_match (name0)); | |
4952 | start = match + 1; | |
96d887e8 | 4953 | } |
96d887e8 PH |
4954 | } |
4955 | ||
96d887e8 PH |
4956 | /* Add symbols from BLOCK matching identifier NAME in DOMAIN to |
4957 | vector *defn_symbols, updating the list of symbols in OBSTACKP | |
4958 | (if necessary). If WILD, treat as NAME with a wildcard prefix. | |
4959 | OBJFILE is the section containing BLOCK. | |
4960 | SYMTAB is recorded with each symbol added. */ | |
4961 | ||
4962 | static void | |
4963 | ada_add_block_symbols (struct obstack *obstackp, | |
76a01679 | 4964 | struct block *block, const char *name, |
96d887e8 | 4965 | domain_enum domain, struct objfile *objfile, |
2570f2b7 | 4966 | int wild) |
96d887e8 PH |
4967 | { |
4968 | struct dict_iterator iter; | |
4969 | int name_len = strlen (name); | |
4970 | /* A matching argument symbol, if any. */ | |
4971 | struct symbol *arg_sym; | |
4972 | /* Set true when we find a matching non-argument symbol. */ | |
4973 | int found_sym; | |
4974 | struct symbol *sym; | |
4975 | ||
4976 | arg_sym = NULL; | |
4977 | found_sym = 0; | |
4978 | if (wild) | |
4979 | { | |
4980 | struct symbol *sym; | |
4981 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
76a01679 | 4982 | { |
5eeb2539 AR |
4983 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
4984 | SYMBOL_DOMAIN (sym), domain) | |
1265e4aa | 4985 | && wild_match (name, name_len, SYMBOL_LINKAGE_NAME (sym))) |
76a01679 | 4986 | { |
2a2d4dc3 AS |
4987 | if (SYMBOL_CLASS (sym) == LOC_UNRESOLVED) |
4988 | continue; | |
4989 | else if (SYMBOL_IS_ARGUMENT (sym)) | |
4990 | arg_sym = sym; | |
4991 | else | |
4992 | { | |
76a01679 JB |
4993 | found_sym = 1; |
4994 | add_defn_to_vec (obstackp, | |
4995 | fixup_symbol_section (sym, objfile), | |
2570f2b7 | 4996 | block); |
76a01679 JB |
4997 | } |
4998 | } | |
4999 | } | |
96d887e8 PH |
5000 | } |
5001 | else | |
5002 | { | |
5003 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
76a01679 | 5004 | { |
5eeb2539 AR |
5005 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
5006 | SYMBOL_DOMAIN (sym), domain)) | |
76a01679 JB |
5007 | { |
5008 | int cmp = strncmp (name, SYMBOL_LINKAGE_NAME (sym), name_len); | |
5009 | if (cmp == 0 | |
5010 | && is_name_suffix (SYMBOL_LINKAGE_NAME (sym) + name_len)) | |
5011 | { | |
2a2d4dc3 AS |
5012 | if (SYMBOL_CLASS (sym) != LOC_UNRESOLVED) |
5013 | { | |
5014 | if (SYMBOL_IS_ARGUMENT (sym)) | |
5015 | arg_sym = sym; | |
5016 | else | |
5017 | { | |
5018 | found_sym = 1; | |
5019 | add_defn_to_vec (obstackp, | |
5020 | fixup_symbol_section (sym, objfile), | |
5021 | block); | |
5022 | } | |
5023 | } | |
76a01679 JB |
5024 | } |
5025 | } | |
5026 | } | |
96d887e8 PH |
5027 | } |
5028 | ||
5029 | if (!found_sym && arg_sym != NULL) | |
5030 | { | |
76a01679 JB |
5031 | add_defn_to_vec (obstackp, |
5032 | fixup_symbol_section (arg_sym, objfile), | |
2570f2b7 | 5033 | block); |
96d887e8 PH |
5034 | } |
5035 | ||
5036 | if (!wild) | |
5037 | { | |
5038 | arg_sym = NULL; | |
5039 | found_sym = 0; | |
5040 | ||
5041 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
76a01679 | 5042 | { |
5eeb2539 AR |
5043 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
5044 | SYMBOL_DOMAIN (sym), domain)) | |
76a01679 JB |
5045 | { |
5046 | int cmp; | |
5047 | ||
5048 | cmp = (int) '_' - (int) SYMBOL_LINKAGE_NAME (sym)[0]; | |
5049 | if (cmp == 0) | |
5050 | { | |
5051 | cmp = strncmp ("_ada_", SYMBOL_LINKAGE_NAME (sym), 5); | |
5052 | if (cmp == 0) | |
5053 | cmp = strncmp (name, SYMBOL_LINKAGE_NAME (sym) + 5, | |
5054 | name_len); | |
5055 | } | |
5056 | ||
5057 | if (cmp == 0 | |
5058 | && is_name_suffix (SYMBOL_LINKAGE_NAME (sym) + name_len + 5)) | |
5059 | { | |
2a2d4dc3 AS |
5060 | if (SYMBOL_CLASS (sym) != LOC_UNRESOLVED) |
5061 | { | |
5062 | if (SYMBOL_IS_ARGUMENT (sym)) | |
5063 | arg_sym = sym; | |
5064 | else | |
5065 | { | |
5066 | found_sym = 1; | |
5067 | add_defn_to_vec (obstackp, | |
5068 | fixup_symbol_section (sym, objfile), | |
5069 | block); | |
5070 | } | |
5071 | } | |
76a01679 JB |
5072 | } |
5073 | } | |
76a01679 | 5074 | } |
96d887e8 PH |
5075 | |
5076 | /* NOTE: This really shouldn't be needed for _ada_ symbols. | |
5077 | They aren't parameters, right? */ | |
5078 | if (!found_sym && arg_sym != NULL) | |
5079 | { | |
5080 | add_defn_to_vec (obstackp, | |
76a01679 | 5081 | fixup_symbol_section (arg_sym, objfile), |
2570f2b7 | 5082 | block); |
96d887e8 PH |
5083 | } |
5084 | } | |
5085 | } | |
5086 | \f | |
41d27058 JB |
5087 | |
5088 | /* Symbol Completion */ | |
5089 | ||
5090 | /* If SYM_NAME is a completion candidate for TEXT, return this symbol | |
5091 | name in a form that's appropriate for the completion. The result | |
5092 | does not need to be deallocated, but is only good until the next call. | |
5093 | ||
5094 | TEXT_LEN is equal to the length of TEXT. | |
5095 | Perform a wild match if WILD_MATCH is set. | |
5096 | ENCODED should be set if TEXT represents the start of a symbol name | |
5097 | in its encoded form. */ | |
5098 | ||
5099 | static const char * | |
5100 | symbol_completion_match (const char *sym_name, | |
5101 | const char *text, int text_len, | |
5102 | int wild_match, int encoded) | |
5103 | { | |
5104 | char *result; | |
5105 | const int verbatim_match = (text[0] == '<'); | |
5106 | int match = 0; | |
5107 | ||
5108 | if (verbatim_match) | |
5109 | { | |
5110 | /* Strip the leading angle bracket. */ | |
5111 | text = text + 1; | |
5112 | text_len--; | |
5113 | } | |
5114 | ||
5115 | /* First, test against the fully qualified name of the symbol. */ | |
5116 | ||
5117 | if (strncmp (sym_name, text, text_len) == 0) | |
5118 | match = 1; | |
5119 | ||
5120 | if (match && !encoded) | |
5121 | { | |
5122 | /* One needed check before declaring a positive match is to verify | |
5123 | that iff we are doing a verbatim match, the decoded version | |
5124 | of the symbol name starts with '<'. Otherwise, this symbol name | |
5125 | is not a suitable completion. */ | |
5126 | const char *sym_name_copy = sym_name; | |
5127 | int has_angle_bracket; | |
5128 | ||
5129 | sym_name = ada_decode (sym_name); | |
5130 | has_angle_bracket = (sym_name[0] == '<'); | |
5131 | match = (has_angle_bracket == verbatim_match); | |
5132 | sym_name = sym_name_copy; | |
5133 | } | |
5134 | ||
5135 | if (match && !verbatim_match) | |
5136 | { | |
5137 | /* When doing non-verbatim match, another check that needs to | |
5138 | be done is to verify that the potentially matching symbol name | |
5139 | does not include capital letters, because the ada-mode would | |
5140 | not be able to understand these symbol names without the | |
5141 | angle bracket notation. */ | |
5142 | const char *tmp; | |
5143 | ||
5144 | for (tmp = sym_name; *tmp != '\0' && !isupper (*tmp); tmp++); | |
5145 | if (*tmp != '\0') | |
5146 | match = 0; | |
5147 | } | |
5148 | ||
5149 | /* Second: Try wild matching... */ | |
5150 | ||
5151 | if (!match && wild_match) | |
5152 | { | |
5153 | /* Since we are doing wild matching, this means that TEXT | |
5154 | may represent an unqualified symbol name. We therefore must | |
5155 | also compare TEXT against the unqualified name of the symbol. */ | |
5156 | sym_name = ada_unqualified_name (ada_decode (sym_name)); | |
5157 | ||
5158 | if (strncmp (sym_name, text, text_len) == 0) | |
5159 | match = 1; | |
5160 | } | |
5161 | ||
5162 | /* Finally: If we found a mach, prepare the result to return. */ | |
5163 | ||
5164 | if (!match) | |
5165 | return NULL; | |
5166 | ||
5167 | if (verbatim_match) | |
5168 | sym_name = add_angle_brackets (sym_name); | |
5169 | ||
5170 | if (!encoded) | |
5171 | sym_name = ada_decode (sym_name); | |
5172 | ||
5173 | return sym_name; | |
5174 | } | |
5175 | ||
2ba95b9b JB |
5176 | typedef char *char_ptr; |
5177 | DEF_VEC_P (char_ptr); | |
5178 | ||
41d27058 JB |
5179 | /* A companion function to ada_make_symbol_completion_list(). |
5180 | Check if SYM_NAME represents a symbol which name would be suitable | |
5181 | to complete TEXT (TEXT_LEN is the length of TEXT), in which case | |
5182 | it is appended at the end of the given string vector SV. | |
5183 | ||
5184 | ORIG_TEXT is the string original string from the user command | |
5185 | that needs to be completed. WORD is the entire command on which | |
5186 | completion should be performed. These two parameters are used to | |
5187 | determine which part of the symbol name should be added to the | |
5188 | completion vector. | |
5189 | if WILD_MATCH is set, then wild matching is performed. | |
5190 | ENCODED should be set if TEXT represents a symbol name in its | |
5191 | encoded formed (in which case the completion should also be | |
5192 | encoded). */ | |
5193 | ||
5194 | static void | |
d6565258 | 5195 | symbol_completion_add (VEC(char_ptr) **sv, |
41d27058 JB |
5196 | const char *sym_name, |
5197 | const char *text, int text_len, | |
5198 | const char *orig_text, const char *word, | |
5199 | int wild_match, int encoded) | |
5200 | { | |
5201 | const char *match = symbol_completion_match (sym_name, text, text_len, | |
5202 | wild_match, encoded); | |
5203 | char *completion; | |
5204 | ||
5205 | if (match == NULL) | |
5206 | return; | |
5207 | ||
5208 | /* We found a match, so add the appropriate completion to the given | |
5209 | string vector. */ | |
5210 | ||
5211 | if (word == orig_text) | |
5212 | { | |
5213 | completion = xmalloc (strlen (match) + 5); | |
5214 | strcpy (completion, match); | |
5215 | } | |
5216 | else if (word > orig_text) | |
5217 | { | |
5218 | /* Return some portion of sym_name. */ | |
5219 | completion = xmalloc (strlen (match) + 5); | |
5220 | strcpy (completion, match + (word - orig_text)); | |
5221 | } | |
5222 | else | |
5223 | { | |
5224 | /* Return some of ORIG_TEXT plus sym_name. */ | |
5225 | completion = xmalloc (strlen (match) + (orig_text - word) + 5); | |
5226 | strncpy (completion, word, orig_text - word); | |
5227 | completion[orig_text - word] = '\0'; | |
5228 | strcat (completion, match); | |
5229 | } | |
5230 | ||
d6565258 | 5231 | VEC_safe_push (char_ptr, *sv, completion); |
41d27058 JB |
5232 | } |
5233 | ||
5234 | /* Return a list of possible symbol names completing TEXT0. The list | |
5235 | is NULL terminated. WORD is the entire command on which completion | |
5236 | is made. */ | |
5237 | ||
5238 | static char ** | |
5239 | ada_make_symbol_completion_list (char *text0, char *word) | |
5240 | { | |
5241 | char *text; | |
5242 | int text_len; | |
5243 | int wild_match; | |
5244 | int encoded; | |
2ba95b9b | 5245 | VEC(char_ptr) *completions = VEC_alloc (char_ptr, 128); |
41d27058 JB |
5246 | struct symbol *sym; |
5247 | struct symtab *s; | |
5248 | struct partial_symtab *ps; | |
5249 | struct minimal_symbol *msymbol; | |
5250 | struct objfile *objfile; | |
5251 | struct block *b, *surrounding_static_block = 0; | |
5252 | int i; | |
5253 | struct dict_iterator iter; | |
5254 | ||
5255 | if (text0[0] == '<') | |
5256 | { | |
5257 | text = xstrdup (text0); | |
5258 | make_cleanup (xfree, text); | |
5259 | text_len = strlen (text); | |
5260 | wild_match = 0; | |
5261 | encoded = 1; | |
5262 | } | |
5263 | else | |
5264 | { | |
5265 | text = xstrdup (ada_encode (text0)); | |
5266 | make_cleanup (xfree, text); | |
5267 | text_len = strlen (text); | |
5268 | for (i = 0; i < text_len; i++) | |
5269 | text[i] = tolower (text[i]); | |
5270 | ||
5271 | encoded = (strstr (text0, "__") != NULL); | |
5272 | /* If the name contains a ".", then the user is entering a fully | |
5273 | qualified entity name, and the match must not be done in wild | |
5274 | mode. Similarly, if the user wants to complete what looks like | |
5275 | an encoded name, the match must not be done in wild mode. */ | |
5276 | wild_match = (strchr (text0, '.') == NULL && !encoded); | |
5277 | } | |
5278 | ||
5279 | /* First, look at the partial symtab symbols. */ | |
5280 | ALL_PSYMTABS (objfile, ps) | |
5281 | { | |
5282 | struct partial_symbol **psym; | |
5283 | ||
5284 | /* If the psymtab's been read in we'll get it when we search | |
5285 | through the blockvector. */ | |
5286 | if (ps->readin) | |
5287 | continue; | |
5288 | ||
5289 | for (psym = objfile->global_psymbols.list + ps->globals_offset; | |
5290 | psym < (objfile->global_psymbols.list + ps->globals_offset | |
5291 | + ps->n_global_syms); psym++) | |
5292 | { | |
5293 | QUIT; | |
d6565258 | 5294 | symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (*psym), |
41d27058 JB |
5295 | text, text_len, text0, word, |
5296 | wild_match, encoded); | |
5297 | } | |
5298 | ||
5299 | for (psym = objfile->static_psymbols.list + ps->statics_offset; | |
5300 | psym < (objfile->static_psymbols.list + ps->statics_offset | |
5301 | + ps->n_static_syms); psym++) | |
5302 | { | |
5303 | QUIT; | |
d6565258 | 5304 | symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (*psym), |
41d27058 JB |
5305 | text, text_len, text0, word, |
5306 | wild_match, encoded); | |
5307 | } | |
5308 | } | |
5309 | ||
5310 | /* At this point scan through the misc symbol vectors and add each | |
5311 | symbol you find to the list. Eventually we want to ignore | |
5312 | anything that isn't a text symbol (everything else will be | |
5313 | handled by the psymtab code above). */ | |
5314 | ||
5315 | ALL_MSYMBOLS (objfile, msymbol) | |
5316 | { | |
5317 | QUIT; | |
d6565258 | 5318 | symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (msymbol), |
41d27058 JB |
5319 | text, text_len, text0, word, wild_match, encoded); |
5320 | } | |
5321 | ||
5322 | /* Search upwards from currently selected frame (so that we can | |
5323 | complete on local vars. */ | |
5324 | ||
5325 | for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b)) | |
5326 | { | |
5327 | if (!BLOCK_SUPERBLOCK (b)) | |
5328 | surrounding_static_block = b; /* For elmin of dups */ | |
5329 | ||
5330 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
5331 | { | |
d6565258 | 5332 | symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (sym), |
41d27058 JB |
5333 | text, text_len, text0, word, |
5334 | wild_match, encoded); | |
5335 | } | |
5336 | } | |
5337 | ||
5338 | /* Go through the symtabs and check the externs and statics for | |
5339 | symbols which match. */ | |
5340 | ||
5341 | ALL_SYMTABS (objfile, s) | |
5342 | { | |
5343 | QUIT; | |
5344 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); | |
5345 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
5346 | { | |
d6565258 | 5347 | symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (sym), |
41d27058 JB |
5348 | text, text_len, text0, word, |
5349 | wild_match, encoded); | |
5350 | } | |
5351 | } | |
5352 | ||
5353 | ALL_SYMTABS (objfile, s) | |
5354 | { | |
5355 | QUIT; | |
5356 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
5357 | /* Don't do this block twice. */ | |
5358 | if (b == surrounding_static_block) | |
5359 | continue; | |
5360 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
5361 | { | |
d6565258 | 5362 | symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (sym), |
41d27058 JB |
5363 | text, text_len, text0, word, |
5364 | wild_match, encoded); | |
5365 | } | |
5366 | } | |
5367 | ||
5368 | /* Append the closing NULL entry. */ | |
2ba95b9b | 5369 | VEC_safe_push (char_ptr, completions, NULL); |
41d27058 | 5370 | |
2ba95b9b JB |
5371 | /* Make a copy of the COMPLETIONS VEC before we free it, and then |
5372 | return the copy. It's unfortunate that we have to make a copy | |
5373 | of an array that we're about to destroy, but there is nothing much | |
5374 | we can do about it. Fortunately, it's typically not a very large | |
5375 | array. */ | |
5376 | { | |
5377 | const size_t completions_size = | |
5378 | VEC_length (char_ptr, completions) * sizeof (char *); | |
5379 | char **result = malloc (completions_size); | |
5380 | ||
5381 | memcpy (result, VEC_address (char_ptr, completions), completions_size); | |
5382 | ||
5383 | VEC_free (char_ptr, completions); | |
5384 | return result; | |
5385 | } | |
41d27058 JB |
5386 | } |
5387 | ||
963a6417 | 5388 | /* Field Access */ |
96d887e8 | 5389 | |
73fb9985 JB |
5390 | /* Return non-zero if TYPE is a pointer to the GNAT dispatch table used |
5391 | for tagged types. */ | |
5392 | ||
5393 | static int | |
5394 | ada_is_dispatch_table_ptr_type (struct type *type) | |
5395 | { | |
5396 | char *name; | |
5397 | ||
5398 | if (TYPE_CODE (type) != TYPE_CODE_PTR) | |
5399 | return 0; | |
5400 | ||
5401 | name = TYPE_NAME (TYPE_TARGET_TYPE (type)); | |
5402 | if (name == NULL) | |
5403 | return 0; | |
5404 | ||
5405 | return (strcmp (name, "ada__tags__dispatch_table") == 0); | |
5406 | } | |
5407 | ||
963a6417 PH |
5408 | /* True if field number FIELD_NUM in struct or union type TYPE is supposed |
5409 | to be invisible to users. */ | |
96d887e8 | 5410 | |
963a6417 PH |
5411 | int |
5412 | ada_is_ignored_field (struct type *type, int field_num) | |
96d887e8 | 5413 | { |
963a6417 PH |
5414 | if (field_num < 0 || field_num > TYPE_NFIELDS (type)) |
5415 | return 1; | |
73fb9985 JB |
5416 | |
5417 | /* Check the name of that field. */ | |
5418 | { | |
5419 | const char *name = TYPE_FIELD_NAME (type, field_num); | |
5420 | ||
5421 | /* Anonymous field names should not be printed. | |
5422 | brobecker/2007-02-20: I don't think this can actually happen | |
5423 | but we don't want to print the value of annonymous fields anyway. */ | |
5424 | if (name == NULL) | |
5425 | return 1; | |
5426 | ||
5427 | /* A field named "_parent" is internally generated by GNAT for | |
5428 | tagged types, and should not be printed either. */ | |
5429 | if (name[0] == '_' && strncmp (name, "_parent", 7) != 0) | |
5430 | return 1; | |
5431 | } | |
5432 | ||
5433 | /* If this is the dispatch table of a tagged type, then ignore. */ | |
5434 | if (ada_is_tagged_type (type, 1) | |
5435 | && ada_is_dispatch_table_ptr_type (TYPE_FIELD_TYPE (type, field_num))) | |
5436 | return 1; | |
5437 | ||
5438 | /* Not a special field, so it should not be ignored. */ | |
5439 | return 0; | |
963a6417 | 5440 | } |
96d887e8 | 5441 | |
963a6417 PH |
5442 | /* True iff TYPE has a tag field. If REFOK, then TYPE may also be a |
5443 | pointer or reference type whose ultimate target has a tag field. */ | |
96d887e8 | 5444 | |
963a6417 PH |
5445 | int |
5446 | ada_is_tagged_type (struct type *type, int refok) | |
5447 | { | |
5448 | return (ada_lookup_struct_elt_type (type, "_tag", refok, 1, NULL) != NULL); | |
5449 | } | |
96d887e8 | 5450 | |
963a6417 | 5451 | /* True iff TYPE represents the type of X'Tag */ |
96d887e8 | 5452 | |
963a6417 PH |
5453 | int |
5454 | ada_is_tag_type (struct type *type) | |
5455 | { | |
5456 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_PTR) | |
5457 | return 0; | |
5458 | else | |
96d887e8 | 5459 | { |
963a6417 PH |
5460 | const char *name = ada_type_name (TYPE_TARGET_TYPE (type)); |
5461 | return (name != NULL | |
5462 | && strcmp (name, "ada__tags__dispatch_table") == 0); | |
96d887e8 | 5463 | } |
96d887e8 PH |
5464 | } |
5465 | ||
963a6417 | 5466 | /* The type of the tag on VAL. */ |
76a01679 | 5467 | |
963a6417 PH |
5468 | struct type * |
5469 | ada_tag_type (struct value *val) | |
96d887e8 | 5470 | { |
df407dfe | 5471 | return ada_lookup_struct_elt_type (value_type (val), "_tag", 1, 0, NULL); |
963a6417 | 5472 | } |
96d887e8 | 5473 | |
963a6417 | 5474 | /* The value of the tag on VAL. */ |
96d887e8 | 5475 | |
963a6417 PH |
5476 | struct value * |
5477 | ada_value_tag (struct value *val) | |
5478 | { | |
03ee6b2e | 5479 | return ada_value_struct_elt (val, "_tag", 0); |
96d887e8 PH |
5480 | } |
5481 | ||
963a6417 PH |
5482 | /* The value of the tag on the object of type TYPE whose contents are |
5483 | saved at VALADDR, if it is non-null, or is at memory address | |
5484 | ADDRESS. */ | |
96d887e8 | 5485 | |
963a6417 | 5486 | static struct value * |
10a2c479 | 5487 | value_tag_from_contents_and_address (struct type *type, |
fc1a4b47 | 5488 | const gdb_byte *valaddr, |
963a6417 | 5489 | CORE_ADDR address) |
96d887e8 | 5490 | { |
963a6417 PH |
5491 | int tag_byte_offset, dummy1, dummy2; |
5492 | struct type *tag_type; | |
5493 | if (find_struct_field ("_tag", type, 0, &tag_type, &tag_byte_offset, | |
52ce6436 | 5494 | NULL, NULL, NULL)) |
96d887e8 | 5495 | { |
fc1a4b47 | 5496 | const gdb_byte *valaddr1 = ((valaddr == NULL) |
10a2c479 AC |
5497 | ? NULL |
5498 | : valaddr + tag_byte_offset); | |
963a6417 | 5499 | CORE_ADDR address1 = (address == 0) ? 0 : address + tag_byte_offset; |
96d887e8 | 5500 | |
963a6417 | 5501 | return value_from_contents_and_address (tag_type, valaddr1, address1); |
96d887e8 | 5502 | } |
963a6417 PH |
5503 | return NULL; |
5504 | } | |
96d887e8 | 5505 | |
963a6417 PH |
5506 | static struct type * |
5507 | type_from_tag (struct value *tag) | |
5508 | { | |
5509 | const char *type_name = ada_tag_name (tag); | |
5510 | if (type_name != NULL) | |
5511 | return ada_find_any_type (ada_encode (type_name)); | |
5512 | return NULL; | |
5513 | } | |
96d887e8 | 5514 | |
963a6417 PH |
5515 | struct tag_args |
5516 | { | |
5517 | struct value *tag; | |
5518 | char *name; | |
5519 | }; | |
4c4b4cd2 | 5520 | |
529cad9c PH |
5521 | |
5522 | static int ada_tag_name_1 (void *); | |
5523 | static int ada_tag_name_2 (struct tag_args *); | |
5524 | ||
4c4b4cd2 PH |
5525 | /* Wrapper function used by ada_tag_name. Given a struct tag_args* |
5526 | value ARGS, sets ARGS->name to the tag name of ARGS->tag. | |
5527 | The value stored in ARGS->name is valid until the next call to | |
5528 | ada_tag_name_1. */ | |
5529 | ||
5530 | static int | |
5531 | ada_tag_name_1 (void *args0) | |
5532 | { | |
5533 | struct tag_args *args = (struct tag_args *) args0; | |
5534 | static char name[1024]; | |
76a01679 | 5535 | char *p; |
4c4b4cd2 PH |
5536 | struct value *val; |
5537 | args->name = NULL; | |
03ee6b2e | 5538 | val = ada_value_struct_elt (args->tag, "tsd", 1); |
529cad9c PH |
5539 | if (val == NULL) |
5540 | return ada_tag_name_2 (args); | |
03ee6b2e | 5541 | val = ada_value_struct_elt (val, "expanded_name", 1); |
529cad9c PH |
5542 | if (val == NULL) |
5543 | return 0; | |
5544 | read_memory_string (value_as_address (val), name, sizeof (name) - 1); | |
5545 | for (p = name; *p != '\0'; p += 1) | |
5546 | if (isalpha (*p)) | |
5547 | *p = tolower (*p); | |
5548 | args->name = name; | |
5549 | return 0; | |
5550 | } | |
5551 | ||
5552 | /* Utility function for ada_tag_name_1 that tries the second | |
5553 | representation for the dispatch table (in which there is no | |
5554 | explicit 'tsd' field in the referent of the tag pointer, and instead | |
5555 | the tsd pointer is stored just before the dispatch table. */ | |
5556 | ||
5557 | static int | |
5558 | ada_tag_name_2 (struct tag_args *args) | |
5559 | { | |
5560 | struct type *info_type; | |
5561 | static char name[1024]; | |
5562 | char *p; | |
5563 | struct value *val, *valp; | |
5564 | ||
5565 | args->name = NULL; | |
5566 | info_type = ada_find_any_type ("ada__tags__type_specific_data"); | |
5567 | if (info_type == NULL) | |
5568 | return 0; | |
5569 | info_type = lookup_pointer_type (lookup_pointer_type (info_type)); | |
5570 | valp = value_cast (info_type, args->tag); | |
5571 | if (valp == NULL) | |
5572 | return 0; | |
2497b498 | 5573 | val = value_ind (value_ptradd (valp, -1)); |
4c4b4cd2 PH |
5574 | if (val == NULL) |
5575 | return 0; | |
03ee6b2e | 5576 | val = ada_value_struct_elt (val, "expanded_name", 1); |
4c4b4cd2 PH |
5577 | if (val == NULL) |
5578 | return 0; | |
5579 | read_memory_string (value_as_address (val), name, sizeof (name) - 1); | |
5580 | for (p = name; *p != '\0'; p += 1) | |
5581 | if (isalpha (*p)) | |
5582 | *p = tolower (*p); | |
5583 | args->name = name; | |
5584 | return 0; | |
5585 | } | |
5586 | ||
5587 | /* The type name of the dynamic type denoted by the 'tag value TAG, as | |
5588 | * a C string. */ | |
5589 | ||
5590 | const char * | |
5591 | ada_tag_name (struct value *tag) | |
5592 | { | |
5593 | struct tag_args args; | |
df407dfe | 5594 | if (!ada_is_tag_type (value_type (tag))) |
4c4b4cd2 | 5595 | return NULL; |
76a01679 | 5596 | args.tag = tag; |
4c4b4cd2 PH |
5597 | args.name = NULL; |
5598 | catch_errors (ada_tag_name_1, &args, NULL, RETURN_MASK_ALL); | |
5599 | return args.name; | |
5600 | } | |
5601 | ||
5602 | /* The parent type of TYPE, or NULL if none. */ | |
14f9c5c9 | 5603 | |
d2e4a39e | 5604 | struct type * |
ebf56fd3 | 5605 | ada_parent_type (struct type *type) |
14f9c5c9 AS |
5606 | { |
5607 | int i; | |
5608 | ||
61ee279c | 5609 | type = ada_check_typedef (type); |
14f9c5c9 AS |
5610 | |
5611 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT) | |
5612 | return NULL; | |
5613 | ||
5614 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
5615 | if (ada_is_parent_field (type, i)) | |
0c1f74cf JB |
5616 | { |
5617 | struct type *parent_type = TYPE_FIELD_TYPE (type, i); | |
5618 | ||
5619 | /* If the _parent field is a pointer, then dereference it. */ | |
5620 | if (TYPE_CODE (parent_type) == TYPE_CODE_PTR) | |
5621 | parent_type = TYPE_TARGET_TYPE (parent_type); | |
5622 | /* If there is a parallel XVS type, get the actual base type. */ | |
5623 | parent_type = ada_get_base_type (parent_type); | |
5624 | ||
5625 | return ada_check_typedef (parent_type); | |
5626 | } | |
14f9c5c9 AS |
5627 | |
5628 | return NULL; | |
5629 | } | |
5630 | ||
4c4b4cd2 PH |
5631 | /* True iff field number FIELD_NUM of structure type TYPE contains the |
5632 | parent-type (inherited) fields of a derived type. Assumes TYPE is | |
5633 | a structure type with at least FIELD_NUM+1 fields. */ | |
14f9c5c9 AS |
5634 | |
5635 | int | |
ebf56fd3 | 5636 | ada_is_parent_field (struct type *type, int field_num) |
14f9c5c9 | 5637 | { |
61ee279c | 5638 | const char *name = TYPE_FIELD_NAME (ada_check_typedef (type), field_num); |
4c4b4cd2 PH |
5639 | return (name != NULL |
5640 | && (strncmp (name, "PARENT", 6) == 0 | |
5641 | || strncmp (name, "_parent", 7) == 0)); | |
14f9c5c9 AS |
5642 | } |
5643 | ||
4c4b4cd2 | 5644 | /* True iff field number FIELD_NUM of structure type TYPE is a |
14f9c5c9 | 5645 | transparent wrapper field (which should be silently traversed when doing |
4c4b4cd2 | 5646 | field selection and flattened when printing). Assumes TYPE is a |
14f9c5c9 | 5647 | structure type with at least FIELD_NUM+1 fields. Such fields are always |
4c4b4cd2 | 5648 | structures. */ |
14f9c5c9 AS |
5649 | |
5650 | int | |
ebf56fd3 | 5651 | ada_is_wrapper_field (struct type *type, int field_num) |
14f9c5c9 | 5652 | { |
d2e4a39e AS |
5653 | const char *name = TYPE_FIELD_NAME (type, field_num); |
5654 | return (name != NULL | |
4c4b4cd2 PH |
5655 | && (strncmp (name, "PARENT", 6) == 0 |
5656 | || strcmp (name, "REP") == 0 | |
5657 | || strncmp (name, "_parent", 7) == 0 | |
5658 | || name[0] == 'S' || name[0] == 'R' || name[0] == 'O')); | |
14f9c5c9 AS |
5659 | } |
5660 | ||
4c4b4cd2 PH |
5661 | /* True iff field number FIELD_NUM of structure or union type TYPE |
5662 | is a variant wrapper. Assumes TYPE is a structure type with at least | |
5663 | FIELD_NUM+1 fields. */ | |
14f9c5c9 AS |
5664 | |
5665 | int | |
ebf56fd3 | 5666 | ada_is_variant_part (struct type *type, int field_num) |
14f9c5c9 | 5667 | { |
d2e4a39e | 5668 | struct type *field_type = TYPE_FIELD_TYPE (type, field_num); |
14f9c5c9 | 5669 | return (TYPE_CODE (field_type) == TYPE_CODE_UNION |
4c4b4cd2 | 5670 | || (is_dynamic_field (type, field_num) |
c3e5cd34 PH |
5671 | && (TYPE_CODE (TYPE_TARGET_TYPE (field_type)) |
5672 | == TYPE_CODE_UNION))); | |
14f9c5c9 AS |
5673 | } |
5674 | ||
5675 | /* Assuming that VAR_TYPE is a variant wrapper (type of the variant part) | |
4c4b4cd2 | 5676 | whose discriminants are contained in the record type OUTER_TYPE, |
7c964f07 UW |
5677 | returns the type of the controlling discriminant for the variant. |
5678 | May return NULL if the type could not be found. */ | |
14f9c5c9 | 5679 | |
d2e4a39e | 5680 | struct type * |
ebf56fd3 | 5681 | ada_variant_discrim_type (struct type *var_type, struct type *outer_type) |
14f9c5c9 | 5682 | { |
d2e4a39e | 5683 | char *name = ada_variant_discrim_name (var_type); |
7c964f07 | 5684 | return ada_lookup_struct_elt_type (outer_type, name, 1, 1, NULL); |
14f9c5c9 AS |
5685 | } |
5686 | ||
4c4b4cd2 | 5687 | /* Assuming that TYPE is the type of a variant wrapper, and FIELD_NUM is a |
14f9c5c9 | 5688 | valid field number within it, returns 1 iff field FIELD_NUM of TYPE |
4c4b4cd2 | 5689 | represents a 'when others' clause; otherwise 0. */ |
14f9c5c9 AS |
5690 | |
5691 | int | |
ebf56fd3 | 5692 | ada_is_others_clause (struct type *type, int field_num) |
14f9c5c9 | 5693 | { |
d2e4a39e | 5694 | const char *name = TYPE_FIELD_NAME (type, field_num); |
14f9c5c9 AS |
5695 | return (name != NULL && name[0] == 'O'); |
5696 | } | |
5697 | ||
5698 | /* Assuming that TYPE0 is the type of the variant part of a record, | |
4c4b4cd2 PH |
5699 | returns the name of the discriminant controlling the variant. |
5700 | The value is valid until the next call to ada_variant_discrim_name. */ | |
14f9c5c9 | 5701 | |
d2e4a39e | 5702 | char * |
ebf56fd3 | 5703 | ada_variant_discrim_name (struct type *type0) |
14f9c5c9 | 5704 | { |
d2e4a39e | 5705 | static char *result = NULL; |
14f9c5c9 | 5706 | static size_t result_len = 0; |
d2e4a39e AS |
5707 | struct type *type; |
5708 | const char *name; | |
5709 | const char *discrim_end; | |
5710 | const char *discrim_start; | |
14f9c5c9 AS |
5711 | |
5712 | if (TYPE_CODE (type0) == TYPE_CODE_PTR) | |
5713 | type = TYPE_TARGET_TYPE (type0); | |
5714 | else | |
5715 | type = type0; | |
5716 | ||
5717 | name = ada_type_name (type); | |
5718 | ||
5719 | if (name == NULL || name[0] == '\000') | |
5720 | return ""; | |
5721 | ||
5722 | for (discrim_end = name + strlen (name) - 6; discrim_end != name; | |
5723 | discrim_end -= 1) | |
5724 | { | |
4c4b4cd2 PH |
5725 | if (strncmp (discrim_end, "___XVN", 6) == 0) |
5726 | break; | |
14f9c5c9 AS |
5727 | } |
5728 | if (discrim_end == name) | |
5729 | return ""; | |
5730 | ||
d2e4a39e | 5731 | for (discrim_start = discrim_end; discrim_start != name + 3; |
14f9c5c9 AS |
5732 | discrim_start -= 1) |
5733 | { | |
d2e4a39e | 5734 | if (discrim_start == name + 1) |
4c4b4cd2 | 5735 | return ""; |
76a01679 | 5736 | if ((discrim_start > name + 3 |
4c4b4cd2 PH |
5737 | && strncmp (discrim_start - 3, "___", 3) == 0) |
5738 | || discrim_start[-1] == '.') | |
5739 | break; | |
14f9c5c9 AS |
5740 | } |
5741 | ||
5742 | GROW_VECT (result, result_len, discrim_end - discrim_start + 1); | |
5743 | strncpy (result, discrim_start, discrim_end - discrim_start); | |
d2e4a39e | 5744 | result[discrim_end - discrim_start] = '\0'; |
14f9c5c9 AS |
5745 | return result; |
5746 | } | |
5747 | ||
4c4b4cd2 PH |
5748 | /* Scan STR for a subtype-encoded number, beginning at position K. |
5749 | Put the position of the character just past the number scanned in | |
5750 | *NEW_K, if NEW_K!=NULL. Put the scanned number in *R, if R!=NULL. | |
5751 | Return 1 if there was a valid number at the given position, and 0 | |
5752 | otherwise. A "subtype-encoded" number consists of the absolute value | |
5753 | in decimal, followed by the letter 'm' to indicate a negative number. | |
5754 | Assumes 0m does not occur. */ | |
14f9c5c9 AS |
5755 | |
5756 | int | |
d2e4a39e | 5757 | ada_scan_number (const char str[], int k, LONGEST * R, int *new_k) |
14f9c5c9 AS |
5758 | { |
5759 | ULONGEST RU; | |
5760 | ||
d2e4a39e | 5761 | if (!isdigit (str[k])) |
14f9c5c9 AS |
5762 | return 0; |
5763 | ||
4c4b4cd2 | 5764 | /* Do it the hard way so as not to make any assumption about |
14f9c5c9 | 5765 | the relationship of unsigned long (%lu scan format code) and |
4c4b4cd2 | 5766 | LONGEST. */ |
14f9c5c9 AS |
5767 | RU = 0; |
5768 | while (isdigit (str[k])) | |
5769 | { | |
d2e4a39e | 5770 | RU = RU * 10 + (str[k] - '0'); |
14f9c5c9 AS |
5771 | k += 1; |
5772 | } | |
5773 | ||
d2e4a39e | 5774 | if (str[k] == 'm') |
14f9c5c9 AS |
5775 | { |
5776 | if (R != NULL) | |
4c4b4cd2 | 5777 | *R = (-(LONGEST) (RU - 1)) - 1; |
14f9c5c9 AS |
5778 | k += 1; |
5779 | } | |
5780 | else if (R != NULL) | |
5781 | *R = (LONGEST) RU; | |
5782 | ||
4c4b4cd2 | 5783 | /* NOTE on the above: Technically, C does not say what the results of |
14f9c5c9 AS |
5784 | - (LONGEST) RU or (LONGEST) -RU are for RU == largest positive |
5785 | number representable as a LONGEST (although either would probably work | |
5786 | in most implementations). When RU>0, the locution in the then branch | |
4c4b4cd2 | 5787 | above is always equivalent to the negative of RU. */ |
14f9c5c9 AS |
5788 | |
5789 | if (new_k != NULL) | |
5790 | *new_k = k; | |
5791 | return 1; | |
5792 | } | |
5793 | ||
4c4b4cd2 PH |
5794 | /* Assuming that TYPE is a variant part wrapper type (a VARIANTS field), |
5795 | and FIELD_NUM is a valid field number within it, returns 1 iff VAL is | |
5796 | in the range encoded by field FIELD_NUM of TYPE; otherwise 0. */ | |
14f9c5c9 | 5797 | |
d2e4a39e | 5798 | int |
ebf56fd3 | 5799 | ada_in_variant (LONGEST val, struct type *type, int field_num) |
14f9c5c9 | 5800 | { |
d2e4a39e | 5801 | const char *name = TYPE_FIELD_NAME (type, field_num); |
14f9c5c9 AS |
5802 | int p; |
5803 | ||
5804 | p = 0; | |
5805 | while (1) | |
5806 | { | |
d2e4a39e | 5807 | switch (name[p]) |
4c4b4cd2 PH |
5808 | { |
5809 | case '\0': | |
5810 | return 0; | |
5811 | case 'S': | |
5812 | { | |
5813 | LONGEST W; | |
5814 | if (!ada_scan_number (name, p + 1, &W, &p)) | |
5815 | return 0; | |
5816 | if (val == W) | |
5817 | return 1; | |
5818 | break; | |
5819 | } | |
5820 | case 'R': | |
5821 | { | |
5822 | LONGEST L, U; | |
5823 | if (!ada_scan_number (name, p + 1, &L, &p) | |
5824 | || name[p] != 'T' || !ada_scan_number (name, p + 1, &U, &p)) | |
5825 | return 0; | |
5826 | if (val >= L && val <= U) | |
5827 | return 1; | |
5828 | break; | |
5829 | } | |
5830 | case 'O': | |
5831 | return 1; | |
5832 | default: | |
5833 | return 0; | |
5834 | } | |
5835 | } | |
5836 | } | |
5837 | ||
5838 | /* FIXME: Lots of redundancy below. Try to consolidate. */ | |
5839 | ||
5840 | /* Given a value ARG1 (offset by OFFSET bytes) of a struct or union type | |
5841 | ARG_TYPE, extract and return the value of one of its (non-static) | |
5842 | fields. FIELDNO says which field. Differs from value_primitive_field | |
5843 | only in that it can handle packed values of arbitrary type. */ | |
14f9c5c9 | 5844 | |
4c4b4cd2 | 5845 | static struct value * |
d2e4a39e | 5846 | ada_value_primitive_field (struct value *arg1, int offset, int fieldno, |
4c4b4cd2 | 5847 | struct type *arg_type) |
14f9c5c9 | 5848 | { |
14f9c5c9 AS |
5849 | struct type *type; |
5850 | ||
61ee279c | 5851 | arg_type = ada_check_typedef (arg_type); |
14f9c5c9 AS |
5852 | type = TYPE_FIELD_TYPE (arg_type, fieldno); |
5853 | ||
4c4b4cd2 | 5854 | /* Handle packed fields. */ |
14f9c5c9 AS |
5855 | |
5856 | if (TYPE_FIELD_BITSIZE (arg_type, fieldno) != 0) | |
5857 | { | |
5858 | int bit_pos = TYPE_FIELD_BITPOS (arg_type, fieldno); | |
5859 | int bit_size = TYPE_FIELD_BITSIZE (arg_type, fieldno); | |
d2e4a39e | 5860 | |
0fd88904 | 5861 | return ada_value_primitive_packed_val (arg1, value_contents (arg1), |
4c4b4cd2 PH |
5862 | offset + bit_pos / 8, |
5863 | bit_pos % 8, bit_size, type); | |
14f9c5c9 AS |
5864 | } |
5865 | else | |
5866 | return value_primitive_field (arg1, offset, fieldno, arg_type); | |
5867 | } | |
5868 | ||
52ce6436 PH |
5869 | /* Find field with name NAME in object of type TYPE. If found, |
5870 | set the following for each argument that is non-null: | |
5871 | - *FIELD_TYPE_P to the field's type; | |
5872 | - *BYTE_OFFSET_P to OFFSET + the byte offset of the field within | |
5873 | an object of that type; | |
5874 | - *BIT_OFFSET_P to the bit offset modulo byte size of the field; | |
5875 | - *BIT_SIZE_P to its size in bits if the field is packed, and | |
5876 | 0 otherwise; | |
5877 | If INDEX_P is non-null, increment *INDEX_P by the number of source-visible | |
5878 | fields up to but not including the desired field, or by the total | |
5879 | number of fields if not found. A NULL value of NAME never | |
5880 | matches; the function just counts visible fields in this case. | |
5881 | ||
5882 | Returns 1 if found, 0 otherwise. */ | |
5883 | ||
4c4b4cd2 | 5884 | static int |
76a01679 JB |
5885 | find_struct_field (char *name, struct type *type, int offset, |
5886 | struct type **field_type_p, | |
52ce6436 PH |
5887 | int *byte_offset_p, int *bit_offset_p, int *bit_size_p, |
5888 | int *index_p) | |
4c4b4cd2 PH |
5889 | { |
5890 | int i; | |
5891 | ||
61ee279c | 5892 | type = ada_check_typedef (type); |
76a01679 | 5893 | |
52ce6436 PH |
5894 | if (field_type_p != NULL) |
5895 | *field_type_p = NULL; | |
5896 | if (byte_offset_p != NULL) | |
d5d6fca5 | 5897 | *byte_offset_p = 0; |
52ce6436 PH |
5898 | if (bit_offset_p != NULL) |
5899 | *bit_offset_p = 0; | |
5900 | if (bit_size_p != NULL) | |
5901 | *bit_size_p = 0; | |
5902 | ||
5903 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
4c4b4cd2 PH |
5904 | { |
5905 | int bit_pos = TYPE_FIELD_BITPOS (type, i); | |
5906 | int fld_offset = offset + bit_pos / 8; | |
5907 | char *t_field_name = TYPE_FIELD_NAME (type, i); | |
76a01679 | 5908 | |
4c4b4cd2 PH |
5909 | if (t_field_name == NULL) |
5910 | continue; | |
5911 | ||
52ce6436 | 5912 | else if (name != NULL && field_name_match (t_field_name, name)) |
76a01679 JB |
5913 | { |
5914 | int bit_size = TYPE_FIELD_BITSIZE (type, i); | |
52ce6436 PH |
5915 | if (field_type_p != NULL) |
5916 | *field_type_p = TYPE_FIELD_TYPE (type, i); | |
5917 | if (byte_offset_p != NULL) | |
5918 | *byte_offset_p = fld_offset; | |
5919 | if (bit_offset_p != NULL) | |
5920 | *bit_offset_p = bit_pos % 8; | |
5921 | if (bit_size_p != NULL) | |
5922 | *bit_size_p = bit_size; | |
76a01679 JB |
5923 | return 1; |
5924 | } | |
4c4b4cd2 PH |
5925 | else if (ada_is_wrapper_field (type, i)) |
5926 | { | |
52ce6436 PH |
5927 | if (find_struct_field (name, TYPE_FIELD_TYPE (type, i), fld_offset, |
5928 | field_type_p, byte_offset_p, bit_offset_p, | |
5929 | bit_size_p, index_p)) | |
76a01679 JB |
5930 | return 1; |
5931 | } | |
4c4b4cd2 PH |
5932 | else if (ada_is_variant_part (type, i)) |
5933 | { | |
52ce6436 PH |
5934 | /* PNH: Wait. Do we ever execute this section, or is ARG always of |
5935 | fixed type?? */ | |
4c4b4cd2 | 5936 | int j; |
52ce6436 PH |
5937 | struct type *field_type |
5938 | = ada_check_typedef (TYPE_FIELD_TYPE (type, i)); | |
4c4b4cd2 | 5939 | |
52ce6436 | 5940 | for (j = 0; j < TYPE_NFIELDS (field_type); j += 1) |
4c4b4cd2 | 5941 | { |
76a01679 JB |
5942 | if (find_struct_field (name, TYPE_FIELD_TYPE (field_type, j), |
5943 | fld_offset | |
5944 | + TYPE_FIELD_BITPOS (field_type, j) / 8, | |
5945 | field_type_p, byte_offset_p, | |
52ce6436 | 5946 | bit_offset_p, bit_size_p, index_p)) |
76a01679 | 5947 | return 1; |
4c4b4cd2 PH |
5948 | } |
5949 | } | |
52ce6436 PH |
5950 | else if (index_p != NULL) |
5951 | *index_p += 1; | |
4c4b4cd2 PH |
5952 | } |
5953 | return 0; | |
5954 | } | |
5955 | ||
52ce6436 | 5956 | /* Number of user-visible fields in record type TYPE. */ |
4c4b4cd2 | 5957 | |
52ce6436 PH |
5958 | static int |
5959 | num_visible_fields (struct type *type) | |
5960 | { | |
5961 | int n; | |
5962 | n = 0; | |
5963 | find_struct_field (NULL, type, 0, NULL, NULL, NULL, NULL, &n); | |
5964 | return n; | |
5965 | } | |
14f9c5c9 | 5966 | |
4c4b4cd2 | 5967 | /* Look for a field NAME in ARG. Adjust the address of ARG by OFFSET bytes, |
14f9c5c9 AS |
5968 | and search in it assuming it has (class) type TYPE. |
5969 | If found, return value, else return NULL. | |
5970 | ||
4c4b4cd2 | 5971 | Searches recursively through wrapper fields (e.g., '_parent'). */ |
14f9c5c9 | 5972 | |
4c4b4cd2 | 5973 | static struct value * |
d2e4a39e | 5974 | ada_search_struct_field (char *name, struct value *arg, int offset, |
4c4b4cd2 | 5975 | struct type *type) |
14f9c5c9 AS |
5976 | { |
5977 | int i; | |
61ee279c | 5978 | type = ada_check_typedef (type); |
14f9c5c9 | 5979 | |
52ce6436 | 5980 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) |
14f9c5c9 AS |
5981 | { |
5982 | char *t_field_name = TYPE_FIELD_NAME (type, i); | |
5983 | ||
5984 | if (t_field_name == NULL) | |
4c4b4cd2 | 5985 | continue; |
14f9c5c9 AS |
5986 | |
5987 | else if (field_name_match (t_field_name, name)) | |
4c4b4cd2 | 5988 | return ada_value_primitive_field (arg, offset, i, type); |
14f9c5c9 AS |
5989 | |
5990 | else if (ada_is_wrapper_field (type, i)) | |
4c4b4cd2 | 5991 | { |
06d5cf63 JB |
5992 | struct value *v = /* Do not let indent join lines here. */ |
5993 | ada_search_struct_field (name, arg, | |
5994 | offset + TYPE_FIELD_BITPOS (type, i) / 8, | |
5995 | TYPE_FIELD_TYPE (type, i)); | |
4c4b4cd2 PH |
5996 | if (v != NULL) |
5997 | return v; | |
5998 | } | |
14f9c5c9 AS |
5999 | |
6000 | else if (ada_is_variant_part (type, i)) | |
4c4b4cd2 | 6001 | { |
52ce6436 | 6002 | /* PNH: Do we ever get here? See find_struct_field. */ |
4c4b4cd2 | 6003 | int j; |
61ee279c | 6004 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type, i)); |
4c4b4cd2 PH |
6005 | int var_offset = offset + TYPE_FIELD_BITPOS (type, i) / 8; |
6006 | ||
52ce6436 | 6007 | for (j = 0; j < TYPE_NFIELDS (field_type); j += 1) |
4c4b4cd2 | 6008 | { |
06d5cf63 JB |
6009 | struct value *v = ada_search_struct_field /* Force line break. */ |
6010 | (name, arg, | |
6011 | var_offset + TYPE_FIELD_BITPOS (field_type, j) / 8, | |
6012 | TYPE_FIELD_TYPE (field_type, j)); | |
4c4b4cd2 PH |
6013 | if (v != NULL) |
6014 | return v; | |
6015 | } | |
6016 | } | |
14f9c5c9 AS |
6017 | } |
6018 | return NULL; | |
6019 | } | |
d2e4a39e | 6020 | |
52ce6436 PH |
6021 | static struct value *ada_index_struct_field_1 (int *, struct value *, |
6022 | int, struct type *); | |
6023 | ||
6024 | ||
6025 | /* Return field #INDEX in ARG, where the index is that returned by | |
6026 | * find_struct_field through its INDEX_P argument. Adjust the address | |
6027 | * of ARG by OFFSET bytes, and search in it assuming it has (class) type TYPE. | |
6028 | * If found, return value, else return NULL. */ | |
6029 | ||
6030 | static struct value * | |
6031 | ada_index_struct_field (int index, struct value *arg, int offset, | |
6032 | struct type *type) | |
6033 | { | |
6034 | return ada_index_struct_field_1 (&index, arg, offset, type); | |
6035 | } | |
6036 | ||
6037 | ||
6038 | /* Auxiliary function for ada_index_struct_field. Like | |
6039 | * ada_index_struct_field, but takes index from *INDEX_P and modifies | |
6040 | * *INDEX_P. */ | |
6041 | ||
6042 | static struct value * | |
6043 | ada_index_struct_field_1 (int *index_p, struct value *arg, int offset, | |
6044 | struct type *type) | |
6045 | { | |
6046 | int i; | |
6047 | type = ada_check_typedef (type); | |
6048 | ||
6049 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
6050 | { | |
6051 | if (TYPE_FIELD_NAME (type, i) == NULL) | |
6052 | continue; | |
6053 | else if (ada_is_wrapper_field (type, i)) | |
6054 | { | |
6055 | struct value *v = /* Do not let indent join lines here. */ | |
6056 | ada_index_struct_field_1 (index_p, arg, | |
6057 | offset + TYPE_FIELD_BITPOS (type, i) / 8, | |
6058 | TYPE_FIELD_TYPE (type, i)); | |
6059 | if (v != NULL) | |
6060 | return v; | |
6061 | } | |
6062 | ||
6063 | else if (ada_is_variant_part (type, i)) | |
6064 | { | |
6065 | /* PNH: Do we ever get here? See ada_search_struct_field, | |
6066 | find_struct_field. */ | |
6067 | error (_("Cannot assign this kind of variant record")); | |
6068 | } | |
6069 | else if (*index_p == 0) | |
6070 | return ada_value_primitive_field (arg, offset, i, type); | |
6071 | else | |
6072 | *index_p -= 1; | |
6073 | } | |
6074 | return NULL; | |
6075 | } | |
6076 | ||
4c4b4cd2 PH |
6077 | /* Given ARG, a value of type (pointer or reference to a)* |
6078 | structure/union, extract the component named NAME from the ultimate | |
6079 | target structure/union and return it as a value with its | |
f5938064 | 6080 | appropriate type. |
14f9c5c9 | 6081 | |
4c4b4cd2 PH |
6082 | The routine searches for NAME among all members of the structure itself |
6083 | and (recursively) among all members of any wrapper members | |
14f9c5c9 AS |
6084 | (e.g., '_parent'). |
6085 | ||
03ee6b2e PH |
6086 | If NO_ERR, then simply return NULL in case of error, rather than |
6087 | calling error. */ | |
14f9c5c9 | 6088 | |
d2e4a39e | 6089 | struct value * |
03ee6b2e | 6090 | ada_value_struct_elt (struct value *arg, char *name, int no_err) |
14f9c5c9 | 6091 | { |
4c4b4cd2 | 6092 | struct type *t, *t1; |
d2e4a39e | 6093 | struct value *v; |
14f9c5c9 | 6094 | |
4c4b4cd2 | 6095 | v = NULL; |
df407dfe | 6096 | t1 = t = ada_check_typedef (value_type (arg)); |
4c4b4cd2 PH |
6097 | if (TYPE_CODE (t) == TYPE_CODE_REF) |
6098 | { | |
6099 | t1 = TYPE_TARGET_TYPE (t); | |
6100 | if (t1 == NULL) | |
03ee6b2e | 6101 | goto BadValue; |
61ee279c | 6102 | t1 = ada_check_typedef (t1); |
4c4b4cd2 | 6103 | if (TYPE_CODE (t1) == TYPE_CODE_PTR) |
76a01679 | 6104 | { |
994b9211 | 6105 | arg = coerce_ref (arg); |
76a01679 JB |
6106 | t = t1; |
6107 | } | |
4c4b4cd2 | 6108 | } |
14f9c5c9 | 6109 | |
4c4b4cd2 PH |
6110 | while (TYPE_CODE (t) == TYPE_CODE_PTR) |
6111 | { | |
6112 | t1 = TYPE_TARGET_TYPE (t); | |
6113 | if (t1 == NULL) | |
03ee6b2e | 6114 | goto BadValue; |
61ee279c | 6115 | t1 = ada_check_typedef (t1); |
4c4b4cd2 | 6116 | if (TYPE_CODE (t1) == TYPE_CODE_PTR) |
76a01679 JB |
6117 | { |
6118 | arg = value_ind (arg); | |
6119 | t = t1; | |
6120 | } | |
4c4b4cd2 | 6121 | else |
76a01679 | 6122 | break; |
4c4b4cd2 | 6123 | } |
14f9c5c9 | 6124 | |
4c4b4cd2 | 6125 | if (TYPE_CODE (t1) != TYPE_CODE_STRUCT && TYPE_CODE (t1) != TYPE_CODE_UNION) |
03ee6b2e | 6126 | goto BadValue; |
14f9c5c9 | 6127 | |
4c4b4cd2 PH |
6128 | if (t1 == t) |
6129 | v = ada_search_struct_field (name, arg, 0, t); | |
6130 | else | |
6131 | { | |
6132 | int bit_offset, bit_size, byte_offset; | |
6133 | struct type *field_type; | |
6134 | CORE_ADDR address; | |
6135 | ||
76a01679 JB |
6136 | if (TYPE_CODE (t) == TYPE_CODE_PTR) |
6137 | address = value_as_address (arg); | |
4c4b4cd2 | 6138 | else |
0fd88904 | 6139 | address = unpack_pointer (t, value_contents (arg)); |
14f9c5c9 | 6140 | |
1ed6ede0 | 6141 | t1 = ada_to_fixed_type (ada_get_base_type (t1), NULL, address, NULL, 1); |
76a01679 JB |
6142 | if (find_struct_field (name, t1, 0, |
6143 | &field_type, &byte_offset, &bit_offset, | |
52ce6436 | 6144 | &bit_size, NULL)) |
76a01679 JB |
6145 | { |
6146 | if (bit_size != 0) | |
6147 | { | |
714e53ab PH |
6148 | if (TYPE_CODE (t) == TYPE_CODE_REF) |
6149 | arg = ada_coerce_ref (arg); | |
6150 | else | |
6151 | arg = ada_value_ind (arg); | |
76a01679 JB |
6152 | v = ada_value_primitive_packed_val (arg, NULL, byte_offset, |
6153 | bit_offset, bit_size, | |
6154 | field_type); | |
6155 | } | |
6156 | else | |
f5938064 | 6157 | v = value_at_lazy (field_type, address + byte_offset); |
76a01679 JB |
6158 | } |
6159 | } | |
6160 | ||
03ee6b2e PH |
6161 | if (v != NULL || no_err) |
6162 | return v; | |
6163 | else | |
323e0a4a | 6164 | error (_("There is no member named %s."), name); |
14f9c5c9 | 6165 | |
03ee6b2e PH |
6166 | BadValue: |
6167 | if (no_err) | |
6168 | return NULL; | |
6169 | else | |
6170 | error (_("Attempt to extract a component of a value that is not a record.")); | |
14f9c5c9 AS |
6171 | } |
6172 | ||
6173 | /* Given a type TYPE, look up the type of the component of type named NAME. | |
4c4b4cd2 PH |
6174 | If DISPP is non-null, add its byte displacement from the beginning of a |
6175 | structure (pointed to by a value) of type TYPE to *DISPP (does not | |
14f9c5c9 AS |
6176 | work for packed fields). |
6177 | ||
6178 | Matches any field whose name has NAME as a prefix, possibly | |
4c4b4cd2 | 6179 | followed by "___". |
14f9c5c9 | 6180 | |
4c4b4cd2 PH |
6181 | TYPE can be either a struct or union. If REFOK, TYPE may also |
6182 | be a (pointer or reference)+ to a struct or union, and the | |
6183 | ultimate target type will be searched. | |
14f9c5c9 AS |
6184 | |
6185 | Looks recursively into variant clauses and parent types. | |
6186 | ||
4c4b4cd2 PH |
6187 | If NOERR is nonzero, return NULL if NAME is not suitably defined or |
6188 | TYPE is not a type of the right kind. */ | |
14f9c5c9 | 6189 | |
4c4b4cd2 | 6190 | static struct type * |
76a01679 JB |
6191 | ada_lookup_struct_elt_type (struct type *type, char *name, int refok, |
6192 | int noerr, int *dispp) | |
14f9c5c9 AS |
6193 | { |
6194 | int i; | |
6195 | ||
6196 | if (name == NULL) | |
6197 | goto BadName; | |
6198 | ||
76a01679 | 6199 | if (refok && type != NULL) |
4c4b4cd2 PH |
6200 | while (1) |
6201 | { | |
61ee279c | 6202 | type = ada_check_typedef (type); |
76a01679 JB |
6203 | if (TYPE_CODE (type) != TYPE_CODE_PTR |
6204 | && TYPE_CODE (type) != TYPE_CODE_REF) | |
6205 | break; | |
6206 | type = TYPE_TARGET_TYPE (type); | |
4c4b4cd2 | 6207 | } |
14f9c5c9 | 6208 | |
76a01679 | 6209 | if (type == NULL |
1265e4aa JB |
6210 | || (TYPE_CODE (type) != TYPE_CODE_STRUCT |
6211 | && TYPE_CODE (type) != TYPE_CODE_UNION)) | |
14f9c5c9 | 6212 | { |
4c4b4cd2 | 6213 | if (noerr) |
76a01679 | 6214 | return NULL; |
4c4b4cd2 | 6215 | else |
76a01679 JB |
6216 | { |
6217 | target_terminal_ours (); | |
6218 | gdb_flush (gdb_stdout); | |
323e0a4a AC |
6219 | if (type == NULL) |
6220 | error (_("Type (null) is not a structure or union type")); | |
6221 | else | |
6222 | { | |
6223 | /* XXX: type_sprint */ | |
6224 | fprintf_unfiltered (gdb_stderr, _("Type ")); | |
6225 | type_print (type, "", gdb_stderr, -1); | |
6226 | error (_(" is not a structure or union type")); | |
6227 | } | |
76a01679 | 6228 | } |
14f9c5c9 AS |
6229 | } |
6230 | ||
6231 | type = to_static_fixed_type (type); | |
6232 | ||
6233 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
6234 | { | |
6235 | char *t_field_name = TYPE_FIELD_NAME (type, i); | |
6236 | struct type *t; | |
6237 | int disp; | |
d2e4a39e | 6238 | |
14f9c5c9 | 6239 | if (t_field_name == NULL) |
4c4b4cd2 | 6240 | continue; |
14f9c5c9 AS |
6241 | |
6242 | else if (field_name_match (t_field_name, name)) | |
4c4b4cd2 PH |
6243 | { |
6244 | if (dispp != NULL) | |
6245 | *dispp += TYPE_FIELD_BITPOS (type, i) / 8; | |
61ee279c | 6246 | return ada_check_typedef (TYPE_FIELD_TYPE (type, i)); |
4c4b4cd2 | 6247 | } |
14f9c5c9 AS |
6248 | |
6249 | else if (ada_is_wrapper_field (type, i)) | |
4c4b4cd2 PH |
6250 | { |
6251 | disp = 0; | |
6252 | t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, | |
6253 | 0, 1, &disp); | |
6254 | if (t != NULL) | |
6255 | { | |
6256 | if (dispp != NULL) | |
6257 | *dispp += disp + TYPE_FIELD_BITPOS (type, i) / 8; | |
6258 | return t; | |
6259 | } | |
6260 | } | |
14f9c5c9 AS |
6261 | |
6262 | else if (ada_is_variant_part (type, i)) | |
4c4b4cd2 PH |
6263 | { |
6264 | int j; | |
61ee279c | 6265 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type, i)); |
4c4b4cd2 PH |
6266 | |
6267 | for (j = TYPE_NFIELDS (field_type) - 1; j >= 0; j -= 1) | |
6268 | { | |
b1f33ddd JB |
6269 | /* FIXME pnh 2008/01/26: We check for a field that is |
6270 | NOT wrapped in a struct, since the compiler sometimes | |
6271 | generates these for unchecked variant types. Revisit | |
6272 | if the compiler changes this practice. */ | |
6273 | char *v_field_name = TYPE_FIELD_NAME (field_type, j); | |
4c4b4cd2 | 6274 | disp = 0; |
b1f33ddd JB |
6275 | if (v_field_name != NULL |
6276 | && field_name_match (v_field_name, name)) | |
6277 | t = ada_check_typedef (TYPE_FIELD_TYPE (field_type, j)); | |
6278 | else | |
6279 | t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (field_type, j), | |
6280 | name, 0, 1, &disp); | |
6281 | ||
4c4b4cd2 PH |
6282 | if (t != NULL) |
6283 | { | |
6284 | if (dispp != NULL) | |
6285 | *dispp += disp + TYPE_FIELD_BITPOS (type, i) / 8; | |
6286 | return t; | |
6287 | } | |
6288 | } | |
6289 | } | |
14f9c5c9 AS |
6290 | |
6291 | } | |
6292 | ||
6293 | BadName: | |
d2e4a39e | 6294 | if (!noerr) |
14f9c5c9 AS |
6295 | { |
6296 | target_terminal_ours (); | |
6297 | gdb_flush (gdb_stdout); | |
323e0a4a AC |
6298 | if (name == NULL) |
6299 | { | |
6300 | /* XXX: type_sprint */ | |
6301 | fprintf_unfiltered (gdb_stderr, _("Type ")); | |
6302 | type_print (type, "", gdb_stderr, -1); | |
6303 | error (_(" has no component named <null>")); | |
6304 | } | |
6305 | else | |
6306 | { | |
6307 | /* XXX: type_sprint */ | |
6308 | fprintf_unfiltered (gdb_stderr, _("Type ")); | |
6309 | type_print (type, "", gdb_stderr, -1); | |
6310 | error (_(" has no component named %s"), name); | |
6311 | } | |
14f9c5c9 AS |
6312 | } |
6313 | ||
6314 | return NULL; | |
6315 | } | |
6316 | ||
b1f33ddd JB |
6317 | /* Assuming that VAR_TYPE is the type of a variant part of a record (a union), |
6318 | within a value of type OUTER_TYPE, return true iff VAR_TYPE | |
6319 | represents an unchecked union (that is, the variant part of a | |
6320 | record that is named in an Unchecked_Union pragma). */ | |
6321 | ||
6322 | static int | |
6323 | is_unchecked_variant (struct type *var_type, struct type *outer_type) | |
6324 | { | |
6325 | char *discrim_name = ada_variant_discrim_name (var_type); | |
6326 | return (ada_lookup_struct_elt_type (outer_type, discrim_name, 0, 1, NULL) | |
6327 | == NULL); | |
6328 | } | |
6329 | ||
6330 | ||
14f9c5c9 AS |
6331 | /* Assuming that VAR_TYPE is the type of a variant part of a record (a union), |
6332 | within a value of type OUTER_TYPE that is stored in GDB at | |
4c4b4cd2 PH |
6333 | OUTER_VALADDR, determine which variant clause (field number in VAR_TYPE, |
6334 | numbering from 0) is applicable. Returns -1 if none are. */ | |
14f9c5c9 | 6335 | |
d2e4a39e | 6336 | int |
ebf56fd3 | 6337 | ada_which_variant_applies (struct type *var_type, struct type *outer_type, |
fc1a4b47 | 6338 | const gdb_byte *outer_valaddr) |
14f9c5c9 AS |
6339 | { |
6340 | int others_clause; | |
6341 | int i; | |
d2e4a39e | 6342 | char *discrim_name = ada_variant_discrim_name (var_type); |
0c281816 JB |
6343 | struct value *outer; |
6344 | struct value *discrim; | |
14f9c5c9 AS |
6345 | LONGEST discrim_val; |
6346 | ||
0c281816 JB |
6347 | outer = value_from_contents_and_address (outer_type, outer_valaddr, 0); |
6348 | discrim = ada_value_struct_elt (outer, discrim_name, 1); | |
6349 | if (discrim == NULL) | |
14f9c5c9 | 6350 | return -1; |
0c281816 | 6351 | discrim_val = value_as_long (discrim); |
14f9c5c9 AS |
6352 | |
6353 | others_clause = -1; | |
6354 | for (i = 0; i < TYPE_NFIELDS (var_type); i += 1) | |
6355 | { | |
6356 | if (ada_is_others_clause (var_type, i)) | |
4c4b4cd2 | 6357 | others_clause = i; |
14f9c5c9 | 6358 | else if (ada_in_variant (discrim_val, var_type, i)) |
4c4b4cd2 | 6359 | return i; |
14f9c5c9 AS |
6360 | } |
6361 | ||
6362 | return others_clause; | |
6363 | } | |
d2e4a39e | 6364 | \f |
14f9c5c9 AS |
6365 | |
6366 | ||
4c4b4cd2 | 6367 | /* Dynamic-Sized Records */ |
14f9c5c9 AS |
6368 | |
6369 | /* Strategy: The type ostensibly attached to a value with dynamic size | |
6370 | (i.e., a size that is not statically recorded in the debugging | |
6371 | data) does not accurately reflect the size or layout of the value. | |
6372 | Our strategy is to convert these values to values with accurate, | |
4c4b4cd2 | 6373 | conventional types that are constructed on the fly. */ |
14f9c5c9 AS |
6374 | |
6375 | /* There is a subtle and tricky problem here. In general, we cannot | |
6376 | determine the size of dynamic records without its data. However, | |
6377 | the 'struct value' data structure, which GDB uses to represent | |
6378 | quantities in the inferior process (the target), requires the size | |
6379 | of the type at the time of its allocation in order to reserve space | |
6380 | for GDB's internal copy of the data. That's why the | |
6381 | 'to_fixed_xxx_type' routines take (target) addresses as parameters, | |
4c4b4cd2 | 6382 | rather than struct value*s. |
14f9c5c9 AS |
6383 | |
6384 | However, GDB's internal history variables ($1, $2, etc.) are | |
6385 | struct value*s containing internal copies of the data that are not, in | |
6386 | general, the same as the data at their corresponding addresses in | |
6387 | the target. Fortunately, the types we give to these values are all | |
6388 | conventional, fixed-size types (as per the strategy described | |
6389 | above), so that we don't usually have to perform the | |
6390 | 'to_fixed_xxx_type' conversions to look at their values. | |
6391 | Unfortunately, there is one exception: if one of the internal | |
6392 | history variables is an array whose elements are unconstrained | |
6393 | records, then we will need to create distinct fixed types for each | |
6394 | element selected. */ | |
6395 | ||
6396 | /* The upshot of all of this is that many routines take a (type, host | |
6397 | address, target address) triple as arguments to represent a value. | |
6398 | The host address, if non-null, is supposed to contain an internal | |
6399 | copy of the relevant data; otherwise, the program is to consult the | |
4c4b4cd2 | 6400 | target at the target address. */ |
14f9c5c9 AS |
6401 | |
6402 | /* Assuming that VAL0 represents a pointer value, the result of | |
6403 | dereferencing it. Differs from value_ind in its treatment of | |
4c4b4cd2 | 6404 | dynamic-sized types. */ |
14f9c5c9 | 6405 | |
d2e4a39e AS |
6406 | struct value * |
6407 | ada_value_ind (struct value *val0) | |
14f9c5c9 | 6408 | { |
d2e4a39e | 6409 | struct value *val = unwrap_value (value_ind (val0)); |
4c4b4cd2 | 6410 | return ada_to_fixed_value (val); |
14f9c5c9 AS |
6411 | } |
6412 | ||
6413 | /* The value resulting from dereferencing any "reference to" | |
4c4b4cd2 PH |
6414 | qualifiers on VAL0. */ |
6415 | ||
d2e4a39e AS |
6416 | static struct value * |
6417 | ada_coerce_ref (struct value *val0) | |
6418 | { | |
df407dfe | 6419 | if (TYPE_CODE (value_type (val0)) == TYPE_CODE_REF) |
d2e4a39e AS |
6420 | { |
6421 | struct value *val = val0; | |
994b9211 | 6422 | val = coerce_ref (val); |
d2e4a39e | 6423 | val = unwrap_value (val); |
4c4b4cd2 | 6424 | return ada_to_fixed_value (val); |
d2e4a39e AS |
6425 | } |
6426 | else | |
14f9c5c9 AS |
6427 | return val0; |
6428 | } | |
6429 | ||
6430 | /* Return OFF rounded upward if necessary to a multiple of | |
4c4b4cd2 | 6431 | ALIGNMENT (a power of 2). */ |
14f9c5c9 AS |
6432 | |
6433 | static unsigned int | |
ebf56fd3 | 6434 | align_value (unsigned int off, unsigned int alignment) |
14f9c5c9 AS |
6435 | { |
6436 | return (off + alignment - 1) & ~(alignment - 1); | |
6437 | } | |
6438 | ||
4c4b4cd2 | 6439 | /* Return the bit alignment required for field #F of template type TYPE. */ |
14f9c5c9 AS |
6440 | |
6441 | static unsigned int | |
ebf56fd3 | 6442 | field_alignment (struct type *type, int f) |
14f9c5c9 | 6443 | { |
d2e4a39e | 6444 | const char *name = TYPE_FIELD_NAME (type, f); |
64a1bf19 | 6445 | int len; |
14f9c5c9 AS |
6446 | int align_offset; |
6447 | ||
64a1bf19 JB |
6448 | /* The field name should never be null, unless the debugging information |
6449 | is somehow malformed. In this case, we assume the field does not | |
6450 | require any alignment. */ | |
6451 | if (name == NULL) | |
6452 | return 1; | |
6453 | ||
6454 | len = strlen (name); | |
6455 | ||
4c4b4cd2 PH |
6456 | if (!isdigit (name[len - 1])) |
6457 | return 1; | |
14f9c5c9 | 6458 | |
d2e4a39e | 6459 | if (isdigit (name[len - 2])) |
14f9c5c9 AS |
6460 | align_offset = len - 2; |
6461 | else | |
6462 | align_offset = len - 1; | |
6463 | ||
4c4b4cd2 | 6464 | if (align_offset < 7 || strncmp ("___XV", name + align_offset - 6, 5) != 0) |
14f9c5c9 AS |
6465 | return TARGET_CHAR_BIT; |
6466 | ||
4c4b4cd2 PH |
6467 | return atoi (name + align_offset) * TARGET_CHAR_BIT; |
6468 | } | |
6469 | ||
6470 | /* Find a symbol named NAME. Ignores ambiguity. */ | |
6471 | ||
6472 | struct symbol * | |
6473 | ada_find_any_symbol (const char *name) | |
6474 | { | |
6475 | struct symbol *sym; | |
6476 | ||
6477 | sym = standard_lookup (name, get_selected_block (NULL), VAR_DOMAIN); | |
6478 | if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
6479 | return sym; | |
6480 | ||
6481 | sym = standard_lookup (name, NULL, STRUCT_DOMAIN); | |
6482 | return sym; | |
14f9c5c9 AS |
6483 | } |
6484 | ||
dddfab26 UW |
6485 | /* Find a type named NAME. Ignores ambiguity. This routine will look |
6486 | solely for types defined by debug info, it will not search the GDB | |
6487 | primitive types. */ | |
4c4b4cd2 | 6488 | |
d2e4a39e | 6489 | struct type * |
ebf56fd3 | 6490 | ada_find_any_type (const char *name) |
14f9c5c9 | 6491 | { |
4c4b4cd2 | 6492 | struct symbol *sym = ada_find_any_symbol (name); |
14f9c5c9 | 6493 | |
14f9c5c9 | 6494 | if (sym != NULL) |
dddfab26 | 6495 | return SYMBOL_TYPE (sym); |
14f9c5c9 | 6496 | |
dddfab26 | 6497 | return NULL; |
14f9c5c9 AS |
6498 | } |
6499 | ||
aeb5907d JB |
6500 | /* Given NAME and an associated BLOCK, search all symbols for |
6501 | NAME suffixed with "___XR", which is the ``renaming'' symbol | |
4c4b4cd2 PH |
6502 | associated to NAME. Return this symbol if found, return |
6503 | NULL otherwise. */ | |
6504 | ||
6505 | struct symbol * | |
6506 | ada_find_renaming_symbol (const char *name, struct block *block) | |
aeb5907d JB |
6507 | { |
6508 | struct symbol *sym; | |
6509 | ||
6510 | sym = find_old_style_renaming_symbol (name, block); | |
6511 | ||
6512 | if (sym != NULL) | |
6513 | return sym; | |
6514 | ||
6515 | /* Not right yet. FIXME pnh 7/20/2007. */ | |
6516 | sym = ada_find_any_symbol (name); | |
6517 | if (sym != NULL && strstr (SYMBOL_LINKAGE_NAME (sym), "___XR") != NULL) | |
6518 | return sym; | |
6519 | else | |
6520 | return NULL; | |
6521 | } | |
6522 | ||
6523 | static struct symbol * | |
6524 | find_old_style_renaming_symbol (const char *name, struct block *block) | |
4c4b4cd2 | 6525 | { |
7f0df278 | 6526 | const struct symbol *function_sym = block_linkage_function (block); |
4c4b4cd2 PH |
6527 | char *rename; |
6528 | ||
6529 | if (function_sym != NULL) | |
6530 | { | |
6531 | /* If the symbol is defined inside a function, NAME is not fully | |
6532 | qualified. This means we need to prepend the function name | |
6533 | as well as adding the ``___XR'' suffix to build the name of | |
6534 | the associated renaming symbol. */ | |
6535 | char *function_name = SYMBOL_LINKAGE_NAME (function_sym); | |
529cad9c PH |
6536 | /* Function names sometimes contain suffixes used |
6537 | for instance to qualify nested subprograms. When building | |
6538 | the XR type name, we need to make sure that this suffix is | |
6539 | not included. So do not include any suffix in the function | |
6540 | name length below. */ | |
69fadcdf | 6541 | int function_name_len = ada_name_prefix_len (function_name); |
76a01679 JB |
6542 | const int rename_len = function_name_len + 2 /* "__" */ |
6543 | + strlen (name) + 6 /* "___XR\0" */ ; | |
4c4b4cd2 | 6544 | |
529cad9c | 6545 | /* Strip the suffix if necessary. */ |
69fadcdf JB |
6546 | ada_remove_trailing_digits (function_name, &function_name_len); |
6547 | ada_remove_po_subprogram_suffix (function_name, &function_name_len); | |
6548 | ada_remove_Xbn_suffix (function_name, &function_name_len); | |
529cad9c | 6549 | |
4c4b4cd2 PH |
6550 | /* Library-level functions are a special case, as GNAT adds |
6551 | a ``_ada_'' prefix to the function name to avoid namespace | |
aeb5907d | 6552 | pollution. However, the renaming symbols themselves do not |
4c4b4cd2 PH |
6553 | have this prefix, so we need to skip this prefix if present. */ |
6554 | if (function_name_len > 5 /* "_ada_" */ | |
6555 | && strstr (function_name, "_ada_") == function_name) | |
69fadcdf JB |
6556 | { |
6557 | function_name += 5; | |
6558 | function_name_len -= 5; | |
6559 | } | |
4c4b4cd2 PH |
6560 | |
6561 | rename = (char *) alloca (rename_len * sizeof (char)); | |
69fadcdf JB |
6562 | strncpy (rename, function_name, function_name_len); |
6563 | xsnprintf (rename + function_name_len, rename_len - function_name_len, | |
6564 | "__%s___XR", name); | |
4c4b4cd2 PH |
6565 | } |
6566 | else | |
6567 | { | |
6568 | const int rename_len = strlen (name) + 6; | |
6569 | rename = (char *) alloca (rename_len * sizeof (char)); | |
88c15c34 | 6570 | xsnprintf (rename, rename_len * sizeof (char), "%s___XR", name); |
4c4b4cd2 PH |
6571 | } |
6572 | ||
6573 | return ada_find_any_symbol (rename); | |
6574 | } | |
6575 | ||
14f9c5c9 | 6576 | /* Because of GNAT encoding conventions, several GDB symbols may match a |
4c4b4cd2 | 6577 | given type name. If the type denoted by TYPE0 is to be preferred to |
14f9c5c9 | 6578 | that of TYPE1 for purposes of type printing, return non-zero; |
4c4b4cd2 PH |
6579 | otherwise return 0. */ |
6580 | ||
14f9c5c9 | 6581 | int |
d2e4a39e | 6582 | ada_prefer_type (struct type *type0, struct type *type1) |
14f9c5c9 AS |
6583 | { |
6584 | if (type1 == NULL) | |
6585 | return 1; | |
6586 | else if (type0 == NULL) | |
6587 | return 0; | |
6588 | else if (TYPE_CODE (type1) == TYPE_CODE_VOID) | |
6589 | return 1; | |
6590 | else if (TYPE_CODE (type0) == TYPE_CODE_VOID) | |
6591 | return 0; | |
4c4b4cd2 PH |
6592 | else if (TYPE_NAME (type1) == NULL && TYPE_NAME (type0) != NULL) |
6593 | return 1; | |
14f9c5c9 AS |
6594 | else if (ada_is_packed_array_type (type0)) |
6595 | return 1; | |
4c4b4cd2 PH |
6596 | else if (ada_is_array_descriptor_type (type0) |
6597 | && !ada_is_array_descriptor_type (type1)) | |
14f9c5c9 | 6598 | return 1; |
aeb5907d JB |
6599 | else |
6600 | { | |
6601 | const char *type0_name = type_name_no_tag (type0); | |
6602 | const char *type1_name = type_name_no_tag (type1); | |
6603 | ||
6604 | if (type0_name != NULL && strstr (type0_name, "___XR") != NULL | |
6605 | && (type1_name == NULL || strstr (type1_name, "___XR") == NULL)) | |
6606 | return 1; | |
6607 | } | |
14f9c5c9 AS |
6608 | return 0; |
6609 | } | |
6610 | ||
6611 | /* The name of TYPE, which is either its TYPE_NAME, or, if that is | |
4c4b4cd2 PH |
6612 | null, its TYPE_TAG_NAME. Null if TYPE is null. */ |
6613 | ||
d2e4a39e AS |
6614 | char * |
6615 | ada_type_name (struct type *type) | |
14f9c5c9 | 6616 | { |
d2e4a39e | 6617 | if (type == NULL) |
14f9c5c9 AS |
6618 | return NULL; |
6619 | else if (TYPE_NAME (type) != NULL) | |
6620 | return TYPE_NAME (type); | |
6621 | else | |
6622 | return TYPE_TAG_NAME (type); | |
6623 | } | |
6624 | ||
6625 | /* Find a parallel type to TYPE whose name is formed by appending | |
4c4b4cd2 | 6626 | SUFFIX to the name of TYPE. */ |
14f9c5c9 | 6627 | |
d2e4a39e | 6628 | struct type * |
ebf56fd3 | 6629 | ada_find_parallel_type (struct type *type, const char *suffix) |
14f9c5c9 | 6630 | { |
d2e4a39e | 6631 | static char *name; |
14f9c5c9 | 6632 | static size_t name_len = 0; |
14f9c5c9 | 6633 | int len; |
d2e4a39e AS |
6634 | char *typename = ada_type_name (type); |
6635 | ||
14f9c5c9 AS |
6636 | if (typename == NULL) |
6637 | return NULL; | |
6638 | ||
6639 | len = strlen (typename); | |
6640 | ||
d2e4a39e | 6641 | GROW_VECT (name, name_len, len + strlen (suffix) + 1); |
14f9c5c9 AS |
6642 | |
6643 | strcpy (name, typename); | |
6644 | strcpy (name + len, suffix); | |
6645 | ||
6646 | return ada_find_any_type (name); | |
6647 | } | |
6648 | ||
6649 | ||
6650 | /* If TYPE is a variable-size record type, return the corresponding template | |
4c4b4cd2 | 6651 | type describing its fields. Otherwise, return NULL. */ |
14f9c5c9 | 6652 | |
d2e4a39e AS |
6653 | static struct type * |
6654 | dynamic_template_type (struct type *type) | |
14f9c5c9 | 6655 | { |
61ee279c | 6656 | type = ada_check_typedef (type); |
14f9c5c9 AS |
6657 | |
6658 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT | |
d2e4a39e | 6659 | || ada_type_name (type) == NULL) |
14f9c5c9 | 6660 | return NULL; |
d2e4a39e | 6661 | else |
14f9c5c9 AS |
6662 | { |
6663 | int len = strlen (ada_type_name (type)); | |
4c4b4cd2 PH |
6664 | if (len > 6 && strcmp (ada_type_name (type) + len - 6, "___XVE") == 0) |
6665 | return type; | |
14f9c5c9 | 6666 | else |
4c4b4cd2 | 6667 | return ada_find_parallel_type (type, "___XVE"); |
14f9c5c9 AS |
6668 | } |
6669 | } | |
6670 | ||
6671 | /* Assuming that TEMPL_TYPE is a union or struct type, returns | |
4c4b4cd2 | 6672 | non-zero iff field FIELD_NUM of TEMPL_TYPE has dynamic size. */ |
14f9c5c9 | 6673 | |
d2e4a39e AS |
6674 | static int |
6675 | is_dynamic_field (struct type *templ_type, int field_num) | |
14f9c5c9 AS |
6676 | { |
6677 | const char *name = TYPE_FIELD_NAME (templ_type, field_num); | |
d2e4a39e | 6678 | return name != NULL |
14f9c5c9 AS |
6679 | && TYPE_CODE (TYPE_FIELD_TYPE (templ_type, field_num)) == TYPE_CODE_PTR |
6680 | && strstr (name, "___XVL") != NULL; | |
6681 | } | |
6682 | ||
4c4b4cd2 PH |
6683 | /* The index of the variant field of TYPE, or -1 if TYPE does not |
6684 | represent a variant record type. */ | |
14f9c5c9 | 6685 | |
d2e4a39e | 6686 | static int |
4c4b4cd2 | 6687 | variant_field_index (struct type *type) |
14f9c5c9 AS |
6688 | { |
6689 | int f; | |
6690 | ||
4c4b4cd2 PH |
6691 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT) |
6692 | return -1; | |
6693 | ||
6694 | for (f = 0; f < TYPE_NFIELDS (type); f += 1) | |
6695 | { | |
6696 | if (ada_is_variant_part (type, f)) | |
6697 | return f; | |
6698 | } | |
6699 | return -1; | |
14f9c5c9 AS |
6700 | } |
6701 | ||
4c4b4cd2 PH |
6702 | /* A record type with no fields. */ |
6703 | ||
d2e4a39e | 6704 | static struct type * |
e9bb382b | 6705 | empty_record (struct type *template) |
14f9c5c9 | 6706 | { |
e9bb382b | 6707 | struct type *type = alloc_type_copy (template); |
14f9c5c9 AS |
6708 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
6709 | TYPE_NFIELDS (type) = 0; | |
6710 | TYPE_FIELDS (type) = NULL; | |
b1f33ddd | 6711 | INIT_CPLUS_SPECIFIC (type); |
14f9c5c9 AS |
6712 | TYPE_NAME (type) = "<empty>"; |
6713 | TYPE_TAG_NAME (type) = NULL; | |
14f9c5c9 AS |
6714 | TYPE_LENGTH (type) = 0; |
6715 | return type; | |
6716 | } | |
6717 | ||
6718 | /* An ordinary record type (with fixed-length fields) that describes | |
4c4b4cd2 PH |
6719 | the value of type TYPE at VALADDR or ADDRESS (see comments at |
6720 | the beginning of this section) VAL according to GNAT conventions. | |
6721 | DVAL0 should describe the (portion of a) record that contains any | |
df407dfe | 6722 | necessary discriminants. It should be NULL if value_type (VAL) is |
14f9c5c9 AS |
6723 | an outer-level type (i.e., as opposed to a branch of a variant.) A |
6724 | variant field (unless unchecked) is replaced by a particular branch | |
4c4b4cd2 | 6725 | of the variant. |
14f9c5c9 | 6726 | |
4c4b4cd2 PH |
6727 | If not KEEP_DYNAMIC_FIELDS, then all fields whose position or |
6728 | length are not statically known are discarded. As a consequence, | |
6729 | VALADDR, ADDRESS and DVAL0 are ignored. | |
6730 | ||
6731 | NOTE: Limitations: For now, we assume that dynamic fields and | |
6732 | variants occupy whole numbers of bytes. However, they need not be | |
6733 | byte-aligned. */ | |
6734 | ||
6735 | struct type * | |
10a2c479 | 6736 | ada_template_to_fixed_record_type_1 (struct type *type, |
fc1a4b47 | 6737 | const gdb_byte *valaddr, |
4c4b4cd2 PH |
6738 | CORE_ADDR address, struct value *dval0, |
6739 | int keep_dynamic_fields) | |
14f9c5c9 | 6740 | { |
d2e4a39e AS |
6741 | struct value *mark = value_mark (); |
6742 | struct value *dval; | |
6743 | struct type *rtype; | |
14f9c5c9 | 6744 | int nfields, bit_len; |
4c4b4cd2 | 6745 | int variant_field; |
14f9c5c9 | 6746 | long off; |
4c4b4cd2 | 6747 | int fld_bit_len, bit_incr; |
14f9c5c9 AS |
6748 | int f; |
6749 | ||
4c4b4cd2 PH |
6750 | /* Compute the number of fields in this record type that are going |
6751 | to be processed: unless keep_dynamic_fields, this includes only | |
6752 | fields whose position and length are static will be processed. */ | |
6753 | if (keep_dynamic_fields) | |
6754 | nfields = TYPE_NFIELDS (type); | |
6755 | else | |
6756 | { | |
6757 | nfields = 0; | |
76a01679 | 6758 | while (nfields < TYPE_NFIELDS (type) |
4c4b4cd2 PH |
6759 | && !ada_is_variant_part (type, nfields) |
6760 | && !is_dynamic_field (type, nfields)) | |
6761 | nfields++; | |
6762 | } | |
6763 | ||
e9bb382b | 6764 | rtype = alloc_type_copy (type); |
14f9c5c9 AS |
6765 | TYPE_CODE (rtype) = TYPE_CODE_STRUCT; |
6766 | INIT_CPLUS_SPECIFIC (rtype); | |
6767 | TYPE_NFIELDS (rtype) = nfields; | |
d2e4a39e | 6768 | TYPE_FIELDS (rtype) = (struct field *) |
14f9c5c9 AS |
6769 | TYPE_ALLOC (rtype, nfields * sizeof (struct field)); |
6770 | memset (TYPE_FIELDS (rtype), 0, sizeof (struct field) * nfields); | |
6771 | TYPE_NAME (rtype) = ada_type_name (type); | |
6772 | TYPE_TAG_NAME (rtype) = NULL; | |
876cecd0 | 6773 | TYPE_FIXED_INSTANCE (rtype) = 1; |
14f9c5c9 | 6774 | |
d2e4a39e AS |
6775 | off = 0; |
6776 | bit_len = 0; | |
4c4b4cd2 PH |
6777 | variant_field = -1; |
6778 | ||
14f9c5c9 AS |
6779 | for (f = 0; f < nfields; f += 1) |
6780 | { | |
6c038f32 PH |
6781 | off = align_value (off, field_alignment (type, f)) |
6782 | + TYPE_FIELD_BITPOS (type, f); | |
14f9c5c9 | 6783 | TYPE_FIELD_BITPOS (rtype, f) = off; |
d2e4a39e | 6784 | TYPE_FIELD_BITSIZE (rtype, f) = 0; |
14f9c5c9 | 6785 | |
d2e4a39e | 6786 | if (ada_is_variant_part (type, f)) |
4c4b4cd2 PH |
6787 | { |
6788 | variant_field = f; | |
6789 | fld_bit_len = bit_incr = 0; | |
6790 | } | |
14f9c5c9 | 6791 | else if (is_dynamic_field (type, f)) |
4c4b4cd2 | 6792 | { |
284614f0 JB |
6793 | const gdb_byte *field_valaddr = valaddr; |
6794 | CORE_ADDR field_address = address; | |
6795 | struct type *field_type = | |
6796 | TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, f)); | |
6797 | ||
4c4b4cd2 | 6798 | if (dval0 == NULL) |
b5304971 JG |
6799 | { |
6800 | /* rtype's length is computed based on the run-time | |
6801 | value of discriminants. If the discriminants are not | |
6802 | initialized, the type size may be completely bogus and | |
6803 | GDB may fail to allocate a value for it. So check the | |
6804 | size first before creating the value. */ | |
6805 | check_size (rtype); | |
6806 | dval = value_from_contents_and_address (rtype, valaddr, address); | |
6807 | } | |
4c4b4cd2 PH |
6808 | else |
6809 | dval = dval0; | |
6810 | ||
284614f0 JB |
6811 | /* If the type referenced by this field is an aligner type, we need |
6812 | to unwrap that aligner type, because its size might not be set. | |
6813 | Keeping the aligner type would cause us to compute the wrong | |
6814 | size for this field, impacting the offset of the all the fields | |
6815 | that follow this one. */ | |
6816 | if (ada_is_aligner_type (field_type)) | |
6817 | { | |
6818 | long field_offset = TYPE_FIELD_BITPOS (field_type, f); | |
6819 | ||
6820 | field_valaddr = cond_offset_host (field_valaddr, field_offset); | |
6821 | field_address = cond_offset_target (field_address, field_offset); | |
6822 | field_type = ada_aligned_type (field_type); | |
6823 | } | |
6824 | ||
6825 | field_valaddr = cond_offset_host (field_valaddr, | |
6826 | off / TARGET_CHAR_BIT); | |
6827 | field_address = cond_offset_target (field_address, | |
6828 | off / TARGET_CHAR_BIT); | |
6829 | ||
6830 | /* Get the fixed type of the field. Note that, in this case, | |
6831 | we do not want to get the real type out of the tag: if | |
6832 | the current field is the parent part of a tagged record, | |
6833 | we will get the tag of the object. Clearly wrong: the real | |
6834 | type of the parent is not the real type of the child. We | |
6835 | would end up in an infinite loop. */ | |
6836 | field_type = ada_get_base_type (field_type); | |
6837 | field_type = ada_to_fixed_type (field_type, field_valaddr, | |
6838 | field_address, dval, 0); | |
6839 | ||
6840 | TYPE_FIELD_TYPE (rtype, f) = field_type; | |
4c4b4cd2 PH |
6841 | TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f); |
6842 | bit_incr = fld_bit_len = | |
6843 | TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, f)) * TARGET_CHAR_BIT; | |
6844 | } | |
14f9c5c9 | 6845 | else |
4c4b4cd2 PH |
6846 | { |
6847 | TYPE_FIELD_TYPE (rtype, f) = TYPE_FIELD_TYPE (type, f); | |
6848 | TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f); | |
6849 | if (TYPE_FIELD_BITSIZE (type, f) > 0) | |
6850 | bit_incr = fld_bit_len = | |
6851 | TYPE_FIELD_BITSIZE (rtype, f) = TYPE_FIELD_BITSIZE (type, f); | |
6852 | else | |
6853 | bit_incr = fld_bit_len = | |
6854 | TYPE_LENGTH (TYPE_FIELD_TYPE (type, f)) * TARGET_CHAR_BIT; | |
6855 | } | |
14f9c5c9 | 6856 | if (off + fld_bit_len > bit_len) |
4c4b4cd2 | 6857 | bit_len = off + fld_bit_len; |
14f9c5c9 | 6858 | off += bit_incr; |
4c4b4cd2 PH |
6859 | TYPE_LENGTH (rtype) = |
6860 | align_value (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT; | |
14f9c5c9 | 6861 | } |
4c4b4cd2 PH |
6862 | |
6863 | /* We handle the variant part, if any, at the end because of certain | |
b1f33ddd | 6864 | odd cases in which it is re-ordered so as NOT to be the last field of |
4c4b4cd2 PH |
6865 | the record. This can happen in the presence of representation |
6866 | clauses. */ | |
6867 | if (variant_field >= 0) | |
6868 | { | |
6869 | struct type *branch_type; | |
6870 | ||
6871 | off = TYPE_FIELD_BITPOS (rtype, variant_field); | |
6872 | ||
6873 | if (dval0 == NULL) | |
6874 | dval = value_from_contents_and_address (rtype, valaddr, address); | |
6875 | else | |
6876 | dval = dval0; | |
6877 | ||
6878 | branch_type = | |
6879 | to_fixed_variant_branch_type | |
6880 | (TYPE_FIELD_TYPE (type, variant_field), | |
6881 | cond_offset_host (valaddr, off / TARGET_CHAR_BIT), | |
6882 | cond_offset_target (address, off / TARGET_CHAR_BIT), dval); | |
6883 | if (branch_type == NULL) | |
6884 | { | |
6885 | for (f = variant_field + 1; f < TYPE_NFIELDS (rtype); f += 1) | |
6886 | TYPE_FIELDS (rtype)[f - 1] = TYPE_FIELDS (rtype)[f]; | |
6887 | TYPE_NFIELDS (rtype) -= 1; | |
6888 | } | |
6889 | else | |
6890 | { | |
6891 | TYPE_FIELD_TYPE (rtype, variant_field) = branch_type; | |
6892 | TYPE_FIELD_NAME (rtype, variant_field) = "S"; | |
6893 | fld_bit_len = | |
6894 | TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, variant_field)) * | |
6895 | TARGET_CHAR_BIT; | |
6896 | if (off + fld_bit_len > bit_len) | |
6897 | bit_len = off + fld_bit_len; | |
6898 | TYPE_LENGTH (rtype) = | |
6899 | align_value (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT; | |
6900 | } | |
6901 | } | |
6902 | ||
714e53ab PH |
6903 | /* According to exp_dbug.ads, the size of TYPE for variable-size records |
6904 | should contain the alignment of that record, which should be a strictly | |
6905 | positive value. If null or negative, then something is wrong, most | |
6906 | probably in the debug info. In that case, we don't round up the size | |
6907 | of the resulting type. If this record is not part of another structure, | |
6908 | the current RTYPE length might be good enough for our purposes. */ | |
6909 | if (TYPE_LENGTH (type) <= 0) | |
6910 | { | |
323e0a4a AC |
6911 | if (TYPE_NAME (rtype)) |
6912 | warning (_("Invalid type size for `%s' detected: %d."), | |
6913 | TYPE_NAME (rtype), TYPE_LENGTH (type)); | |
6914 | else | |
6915 | warning (_("Invalid type size for <unnamed> detected: %d."), | |
6916 | TYPE_LENGTH (type)); | |
714e53ab PH |
6917 | } |
6918 | else | |
6919 | { | |
6920 | TYPE_LENGTH (rtype) = align_value (TYPE_LENGTH (rtype), | |
6921 | TYPE_LENGTH (type)); | |
6922 | } | |
14f9c5c9 AS |
6923 | |
6924 | value_free_to_mark (mark); | |
d2e4a39e | 6925 | if (TYPE_LENGTH (rtype) > varsize_limit) |
323e0a4a | 6926 | error (_("record type with dynamic size is larger than varsize-limit")); |
14f9c5c9 AS |
6927 | return rtype; |
6928 | } | |
6929 | ||
4c4b4cd2 PH |
6930 | /* As for ada_template_to_fixed_record_type_1 with KEEP_DYNAMIC_FIELDS |
6931 | of 1. */ | |
14f9c5c9 | 6932 | |
d2e4a39e | 6933 | static struct type * |
fc1a4b47 | 6934 | template_to_fixed_record_type (struct type *type, const gdb_byte *valaddr, |
4c4b4cd2 PH |
6935 | CORE_ADDR address, struct value *dval0) |
6936 | { | |
6937 | return ada_template_to_fixed_record_type_1 (type, valaddr, | |
6938 | address, dval0, 1); | |
6939 | } | |
6940 | ||
6941 | /* An ordinary record type in which ___XVL-convention fields and | |
6942 | ___XVU- and ___XVN-convention field types in TYPE0 are replaced with | |
6943 | static approximations, containing all possible fields. Uses | |
6944 | no runtime values. Useless for use in values, but that's OK, | |
6945 | since the results are used only for type determinations. Works on both | |
6946 | structs and unions. Representation note: to save space, we memorize | |
6947 | the result of this function in the TYPE_TARGET_TYPE of the | |
6948 | template type. */ | |
6949 | ||
6950 | static struct type * | |
6951 | template_to_static_fixed_type (struct type *type0) | |
14f9c5c9 AS |
6952 | { |
6953 | struct type *type; | |
6954 | int nfields; | |
6955 | int f; | |
6956 | ||
4c4b4cd2 PH |
6957 | if (TYPE_TARGET_TYPE (type0) != NULL) |
6958 | return TYPE_TARGET_TYPE (type0); | |
6959 | ||
6960 | nfields = TYPE_NFIELDS (type0); | |
6961 | type = type0; | |
14f9c5c9 AS |
6962 | |
6963 | for (f = 0; f < nfields; f += 1) | |
6964 | { | |
61ee279c | 6965 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type0, f)); |
4c4b4cd2 | 6966 | struct type *new_type; |
14f9c5c9 | 6967 | |
4c4b4cd2 PH |
6968 | if (is_dynamic_field (type0, f)) |
6969 | new_type = to_static_fixed_type (TYPE_TARGET_TYPE (field_type)); | |
14f9c5c9 | 6970 | else |
f192137b | 6971 | new_type = static_unwrap_type (field_type); |
4c4b4cd2 PH |
6972 | if (type == type0 && new_type != field_type) |
6973 | { | |
e9bb382b | 6974 | TYPE_TARGET_TYPE (type0) = type = alloc_type_copy (type0); |
4c4b4cd2 PH |
6975 | TYPE_CODE (type) = TYPE_CODE (type0); |
6976 | INIT_CPLUS_SPECIFIC (type); | |
6977 | TYPE_NFIELDS (type) = nfields; | |
6978 | TYPE_FIELDS (type) = (struct field *) | |
6979 | TYPE_ALLOC (type, nfields * sizeof (struct field)); | |
6980 | memcpy (TYPE_FIELDS (type), TYPE_FIELDS (type0), | |
6981 | sizeof (struct field) * nfields); | |
6982 | TYPE_NAME (type) = ada_type_name (type0); | |
6983 | TYPE_TAG_NAME (type) = NULL; | |
876cecd0 | 6984 | TYPE_FIXED_INSTANCE (type) = 1; |
4c4b4cd2 PH |
6985 | TYPE_LENGTH (type) = 0; |
6986 | } | |
6987 | TYPE_FIELD_TYPE (type, f) = new_type; | |
6988 | TYPE_FIELD_NAME (type, f) = TYPE_FIELD_NAME (type0, f); | |
14f9c5c9 | 6989 | } |
14f9c5c9 AS |
6990 | return type; |
6991 | } | |
6992 | ||
4c4b4cd2 | 6993 | /* Given an object of type TYPE whose contents are at VALADDR and |
5823c3ef JB |
6994 | whose address in memory is ADDRESS, returns a revision of TYPE, |
6995 | which should be a non-dynamic-sized record, in which the variant | |
6996 | part, if any, is replaced with the appropriate branch. Looks | |
4c4b4cd2 PH |
6997 | for discriminant values in DVAL0, which can be NULL if the record |
6998 | contains the necessary discriminant values. */ | |
6999 | ||
d2e4a39e | 7000 | static struct type * |
fc1a4b47 | 7001 | to_record_with_fixed_variant_part (struct type *type, const gdb_byte *valaddr, |
4c4b4cd2 | 7002 | CORE_ADDR address, struct value *dval0) |
14f9c5c9 | 7003 | { |
d2e4a39e | 7004 | struct value *mark = value_mark (); |
4c4b4cd2 | 7005 | struct value *dval; |
d2e4a39e | 7006 | struct type *rtype; |
14f9c5c9 AS |
7007 | struct type *branch_type; |
7008 | int nfields = TYPE_NFIELDS (type); | |
4c4b4cd2 | 7009 | int variant_field = variant_field_index (type); |
14f9c5c9 | 7010 | |
4c4b4cd2 | 7011 | if (variant_field == -1) |
14f9c5c9 AS |
7012 | return type; |
7013 | ||
4c4b4cd2 PH |
7014 | if (dval0 == NULL) |
7015 | dval = value_from_contents_and_address (type, valaddr, address); | |
7016 | else | |
7017 | dval = dval0; | |
7018 | ||
e9bb382b | 7019 | rtype = alloc_type_copy (type); |
14f9c5c9 | 7020 | TYPE_CODE (rtype) = TYPE_CODE_STRUCT; |
4c4b4cd2 PH |
7021 | INIT_CPLUS_SPECIFIC (rtype); |
7022 | TYPE_NFIELDS (rtype) = nfields; | |
d2e4a39e AS |
7023 | TYPE_FIELDS (rtype) = |
7024 | (struct field *) TYPE_ALLOC (rtype, nfields * sizeof (struct field)); | |
7025 | memcpy (TYPE_FIELDS (rtype), TYPE_FIELDS (type), | |
4c4b4cd2 | 7026 | sizeof (struct field) * nfields); |
14f9c5c9 AS |
7027 | TYPE_NAME (rtype) = ada_type_name (type); |
7028 | TYPE_TAG_NAME (rtype) = NULL; | |
876cecd0 | 7029 | TYPE_FIXED_INSTANCE (rtype) = 1; |
14f9c5c9 AS |
7030 | TYPE_LENGTH (rtype) = TYPE_LENGTH (type); |
7031 | ||
4c4b4cd2 PH |
7032 | branch_type = to_fixed_variant_branch_type |
7033 | (TYPE_FIELD_TYPE (type, variant_field), | |
d2e4a39e | 7034 | cond_offset_host (valaddr, |
4c4b4cd2 PH |
7035 | TYPE_FIELD_BITPOS (type, variant_field) |
7036 | / TARGET_CHAR_BIT), | |
d2e4a39e | 7037 | cond_offset_target (address, |
4c4b4cd2 PH |
7038 | TYPE_FIELD_BITPOS (type, variant_field) |
7039 | / TARGET_CHAR_BIT), dval); | |
d2e4a39e | 7040 | if (branch_type == NULL) |
14f9c5c9 | 7041 | { |
4c4b4cd2 PH |
7042 | int f; |
7043 | for (f = variant_field + 1; f < nfields; f += 1) | |
7044 | TYPE_FIELDS (rtype)[f - 1] = TYPE_FIELDS (rtype)[f]; | |
14f9c5c9 | 7045 | TYPE_NFIELDS (rtype) -= 1; |
14f9c5c9 AS |
7046 | } |
7047 | else | |
7048 | { | |
4c4b4cd2 PH |
7049 | TYPE_FIELD_TYPE (rtype, variant_field) = branch_type; |
7050 | TYPE_FIELD_NAME (rtype, variant_field) = "S"; | |
7051 | TYPE_FIELD_BITSIZE (rtype, variant_field) = 0; | |
14f9c5c9 | 7052 | TYPE_LENGTH (rtype) += TYPE_LENGTH (branch_type); |
14f9c5c9 | 7053 | } |
4c4b4cd2 | 7054 | TYPE_LENGTH (rtype) -= TYPE_LENGTH (TYPE_FIELD_TYPE (type, variant_field)); |
d2e4a39e | 7055 | |
4c4b4cd2 | 7056 | value_free_to_mark (mark); |
14f9c5c9 AS |
7057 | return rtype; |
7058 | } | |
7059 | ||
7060 | /* An ordinary record type (with fixed-length fields) that describes | |
7061 | the value at (TYPE0, VALADDR, ADDRESS) [see explanation at | |
7062 | beginning of this section]. Any necessary discriminants' values | |
4c4b4cd2 PH |
7063 | should be in DVAL, a record value; it may be NULL if the object |
7064 | at ADDR itself contains any necessary discriminant values. | |
7065 | Additionally, VALADDR and ADDRESS may also be NULL if no discriminant | |
7066 | values from the record are needed. Except in the case that DVAL, | |
7067 | VALADDR, and ADDRESS are all 0 or NULL, a variant field (unless | |
7068 | unchecked) is replaced by a particular branch of the variant. | |
7069 | ||
7070 | NOTE: the case in which DVAL and VALADDR are NULL and ADDRESS is 0 | |
7071 | is questionable and may be removed. It can arise during the | |
7072 | processing of an unconstrained-array-of-record type where all the | |
7073 | variant branches have exactly the same size. This is because in | |
7074 | such cases, the compiler does not bother to use the XVS convention | |
7075 | when encoding the record. I am currently dubious of this | |
7076 | shortcut and suspect the compiler should be altered. FIXME. */ | |
14f9c5c9 | 7077 | |
d2e4a39e | 7078 | static struct type * |
fc1a4b47 | 7079 | to_fixed_record_type (struct type *type0, const gdb_byte *valaddr, |
4c4b4cd2 | 7080 | CORE_ADDR address, struct value *dval) |
14f9c5c9 | 7081 | { |
d2e4a39e | 7082 | struct type *templ_type; |
14f9c5c9 | 7083 | |
876cecd0 | 7084 | if (TYPE_FIXED_INSTANCE (type0)) |
4c4b4cd2 PH |
7085 | return type0; |
7086 | ||
d2e4a39e | 7087 | templ_type = dynamic_template_type (type0); |
14f9c5c9 AS |
7088 | |
7089 | if (templ_type != NULL) | |
7090 | return template_to_fixed_record_type (templ_type, valaddr, address, dval); | |
4c4b4cd2 PH |
7091 | else if (variant_field_index (type0) >= 0) |
7092 | { | |
7093 | if (dval == NULL && valaddr == NULL && address == 0) | |
7094 | return type0; | |
7095 | return to_record_with_fixed_variant_part (type0, valaddr, address, | |
7096 | dval); | |
7097 | } | |
14f9c5c9 AS |
7098 | else |
7099 | { | |
876cecd0 | 7100 | TYPE_FIXED_INSTANCE (type0) = 1; |
14f9c5c9 AS |
7101 | return type0; |
7102 | } | |
7103 | ||
7104 | } | |
7105 | ||
7106 | /* An ordinary record type (with fixed-length fields) that describes | |
7107 | the value at (VAR_TYPE0, VALADDR, ADDRESS), where VAR_TYPE0 is a | |
7108 | union type. Any necessary discriminants' values should be in DVAL, | |
7109 | a record value. That is, this routine selects the appropriate | |
7110 | branch of the union at ADDR according to the discriminant value | |
b1f33ddd JB |
7111 | indicated in the union's type name. Returns VAR_TYPE0 itself if |
7112 | it represents a variant subject to a pragma Unchecked_Union. */ | |
14f9c5c9 | 7113 | |
d2e4a39e | 7114 | static struct type * |
fc1a4b47 | 7115 | to_fixed_variant_branch_type (struct type *var_type0, const gdb_byte *valaddr, |
4c4b4cd2 | 7116 | CORE_ADDR address, struct value *dval) |
14f9c5c9 AS |
7117 | { |
7118 | int which; | |
d2e4a39e AS |
7119 | struct type *templ_type; |
7120 | struct type *var_type; | |
14f9c5c9 AS |
7121 | |
7122 | if (TYPE_CODE (var_type0) == TYPE_CODE_PTR) | |
7123 | var_type = TYPE_TARGET_TYPE (var_type0); | |
d2e4a39e | 7124 | else |
14f9c5c9 AS |
7125 | var_type = var_type0; |
7126 | ||
7127 | templ_type = ada_find_parallel_type (var_type, "___XVU"); | |
7128 | ||
7129 | if (templ_type != NULL) | |
7130 | var_type = templ_type; | |
7131 | ||
b1f33ddd JB |
7132 | if (is_unchecked_variant (var_type, value_type (dval))) |
7133 | return var_type0; | |
d2e4a39e AS |
7134 | which = |
7135 | ada_which_variant_applies (var_type, | |
0fd88904 | 7136 | value_type (dval), value_contents (dval)); |
14f9c5c9 AS |
7137 | |
7138 | if (which < 0) | |
e9bb382b | 7139 | return empty_record (var_type); |
14f9c5c9 | 7140 | else if (is_dynamic_field (var_type, which)) |
4c4b4cd2 | 7141 | return to_fixed_record_type |
d2e4a39e AS |
7142 | (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (var_type, which)), |
7143 | valaddr, address, dval); | |
4c4b4cd2 | 7144 | else if (variant_field_index (TYPE_FIELD_TYPE (var_type, which)) >= 0) |
d2e4a39e AS |
7145 | return |
7146 | to_fixed_record_type | |
7147 | (TYPE_FIELD_TYPE (var_type, which), valaddr, address, dval); | |
14f9c5c9 AS |
7148 | else |
7149 | return TYPE_FIELD_TYPE (var_type, which); | |
7150 | } | |
7151 | ||
7152 | /* Assuming that TYPE0 is an array type describing the type of a value | |
7153 | at ADDR, and that DVAL describes a record containing any | |
7154 | discriminants used in TYPE0, returns a type for the value that | |
7155 | contains no dynamic components (that is, no components whose sizes | |
7156 | are determined by run-time quantities). Unless IGNORE_TOO_BIG is | |
7157 | true, gives an error message if the resulting type's size is over | |
4c4b4cd2 | 7158 | varsize_limit. */ |
14f9c5c9 | 7159 | |
d2e4a39e AS |
7160 | static struct type * |
7161 | to_fixed_array_type (struct type *type0, struct value *dval, | |
4c4b4cd2 | 7162 | int ignore_too_big) |
14f9c5c9 | 7163 | { |
d2e4a39e AS |
7164 | struct type *index_type_desc; |
7165 | struct type *result; | |
284614f0 | 7166 | int packed_array_p; |
14f9c5c9 | 7167 | |
284614f0 | 7168 | if (TYPE_FIXED_INSTANCE (type0)) |
4c4b4cd2 | 7169 | return type0; |
14f9c5c9 | 7170 | |
284614f0 JB |
7171 | packed_array_p = ada_is_packed_array_type (type0); |
7172 | if (packed_array_p) | |
7173 | type0 = decode_packed_array_type (type0); | |
7174 | ||
14f9c5c9 AS |
7175 | index_type_desc = ada_find_parallel_type (type0, "___XA"); |
7176 | if (index_type_desc == NULL) | |
7177 | { | |
61ee279c | 7178 | struct type *elt_type0 = ada_check_typedef (TYPE_TARGET_TYPE (type0)); |
14f9c5c9 | 7179 | /* NOTE: elt_type---the fixed version of elt_type0---should never |
4c4b4cd2 PH |
7180 | depend on the contents of the array in properly constructed |
7181 | debugging data. */ | |
529cad9c PH |
7182 | /* Create a fixed version of the array element type. |
7183 | We're not providing the address of an element here, | |
e1d5a0d2 | 7184 | and thus the actual object value cannot be inspected to do |
529cad9c PH |
7185 | the conversion. This should not be a problem, since arrays of |
7186 | unconstrained objects are not allowed. In particular, all | |
7187 | the elements of an array of a tagged type should all be of | |
7188 | the same type specified in the debugging info. No need to | |
7189 | consult the object tag. */ | |
1ed6ede0 | 7190 | struct type *elt_type = ada_to_fixed_type (elt_type0, 0, 0, dval, 1); |
14f9c5c9 | 7191 | |
284614f0 JB |
7192 | /* Make sure we always create a new array type when dealing with |
7193 | packed array types, since we're going to fix-up the array | |
7194 | type length and element bitsize a little further down. */ | |
7195 | if (elt_type0 == elt_type && !packed_array_p) | |
4c4b4cd2 | 7196 | result = type0; |
14f9c5c9 | 7197 | else |
e9bb382b | 7198 | result = create_array_type (alloc_type_copy (type0), |
4c4b4cd2 | 7199 | elt_type, TYPE_INDEX_TYPE (type0)); |
14f9c5c9 AS |
7200 | } |
7201 | else | |
7202 | { | |
7203 | int i; | |
7204 | struct type *elt_type0; | |
7205 | ||
7206 | elt_type0 = type0; | |
7207 | for (i = TYPE_NFIELDS (index_type_desc); i > 0; i -= 1) | |
4c4b4cd2 | 7208 | elt_type0 = TYPE_TARGET_TYPE (elt_type0); |
14f9c5c9 AS |
7209 | |
7210 | /* NOTE: result---the fixed version of elt_type0---should never | |
4c4b4cd2 PH |
7211 | depend on the contents of the array in properly constructed |
7212 | debugging data. */ | |
529cad9c PH |
7213 | /* Create a fixed version of the array element type. |
7214 | We're not providing the address of an element here, | |
e1d5a0d2 | 7215 | and thus the actual object value cannot be inspected to do |
529cad9c PH |
7216 | the conversion. This should not be a problem, since arrays of |
7217 | unconstrained objects are not allowed. In particular, all | |
7218 | the elements of an array of a tagged type should all be of | |
7219 | the same type specified in the debugging info. No need to | |
7220 | consult the object tag. */ | |
1ed6ede0 JB |
7221 | result = |
7222 | ada_to_fixed_type (ada_check_typedef (elt_type0), 0, 0, dval, 1); | |
1ce677a4 UW |
7223 | |
7224 | elt_type0 = type0; | |
14f9c5c9 | 7225 | for (i = TYPE_NFIELDS (index_type_desc) - 1; i >= 0; i -= 1) |
4c4b4cd2 PH |
7226 | { |
7227 | struct type *range_type = | |
7228 | to_fixed_range_type (TYPE_FIELD_NAME (index_type_desc, i), | |
1ce677a4 | 7229 | dval, TYPE_INDEX_TYPE (elt_type0)); |
e9bb382b | 7230 | result = create_array_type (alloc_type_copy (elt_type0), |
4c4b4cd2 | 7231 | result, range_type); |
1ce677a4 | 7232 | elt_type0 = TYPE_TARGET_TYPE (elt_type0); |
4c4b4cd2 | 7233 | } |
d2e4a39e | 7234 | if (!ignore_too_big && TYPE_LENGTH (result) > varsize_limit) |
323e0a4a | 7235 | error (_("array type with dynamic size is larger than varsize-limit")); |
14f9c5c9 AS |
7236 | } |
7237 | ||
284614f0 JB |
7238 | if (packed_array_p) |
7239 | { | |
7240 | /* So far, the resulting type has been created as if the original | |
7241 | type was a regular (non-packed) array type. As a result, the | |
7242 | bitsize of the array elements needs to be set again, and the array | |
7243 | length needs to be recomputed based on that bitsize. */ | |
7244 | int len = TYPE_LENGTH (result) / TYPE_LENGTH (TYPE_TARGET_TYPE (result)); | |
7245 | int elt_bitsize = TYPE_FIELD_BITSIZE (type0, 0); | |
7246 | ||
7247 | TYPE_FIELD_BITSIZE (result, 0) = TYPE_FIELD_BITSIZE (type0, 0); | |
7248 | TYPE_LENGTH (result) = len * elt_bitsize / HOST_CHAR_BIT; | |
7249 | if (TYPE_LENGTH (result) * HOST_CHAR_BIT < len * elt_bitsize) | |
7250 | TYPE_LENGTH (result)++; | |
7251 | } | |
7252 | ||
876cecd0 | 7253 | TYPE_FIXED_INSTANCE (result) = 1; |
14f9c5c9 | 7254 | return result; |
d2e4a39e | 7255 | } |
14f9c5c9 AS |
7256 | |
7257 | ||
7258 | /* A standard type (containing no dynamically sized components) | |
7259 | corresponding to TYPE for the value (TYPE, VALADDR, ADDRESS) | |
7260 | DVAL describes a record containing any discriminants used in TYPE0, | |
4c4b4cd2 | 7261 | and may be NULL if there are none, or if the object of type TYPE at |
529cad9c PH |
7262 | ADDRESS or in VALADDR contains these discriminants. |
7263 | ||
1ed6ede0 JB |
7264 | If CHECK_TAG is not null, in the case of tagged types, this function |
7265 | attempts to locate the object's tag and use it to compute the actual | |
7266 | type. However, when ADDRESS is null, we cannot use it to determine the | |
7267 | location of the tag, and therefore compute the tagged type's actual type. | |
7268 | So we return the tagged type without consulting the tag. */ | |
529cad9c | 7269 | |
f192137b JB |
7270 | static struct type * |
7271 | ada_to_fixed_type_1 (struct type *type, const gdb_byte *valaddr, | |
1ed6ede0 | 7272 | CORE_ADDR address, struct value *dval, int check_tag) |
14f9c5c9 | 7273 | { |
61ee279c | 7274 | type = ada_check_typedef (type); |
d2e4a39e AS |
7275 | switch (TYPE_CODE (type)) |
7276 | { | |
7277 | default: | |
14f9c5c9 | 7278 | return type; |
d2e4a39e | 7279 | case TYPE_CODE_STRUCT: |
4c4b4cd2 | 7280 | { |
76a01679 | 7281 | struct type *static_type = to_static_fixed_type (type); |
1ed6ede0 JB |
7282 | struct type *fixed_record_type = |
7283 | to_fixed_record_type (type, valaddr, address, NULL); | |
529cad9c PH |
7284 | /* If STATIC_TYPE is a tagged type and we know the object's address, |
7285 | then we can determine its tag, and compute the object's actual | |
1ed6ede0 JB |
7286 | type from there. Note that we have to use the fixed record |
7287 | type (the parent part of the record may have dynamic fields | |
7288 | and the way the location of _tag is expressed may depend on | |
7289 | them). */ | |
529cad9c | 7290 | |
1ed6ede0 | 7291 | if (check_tag && address != 0 && ada_is_tagged_type (static_type, 0)) |
76a01679 JB |
7292 | { |
7293 | struct type *real_type = | |
1ed6ede0 JB |
7294 | type_from_tag (value_tag_from_contents_and_address |
7295 | (fixed_record_type, | |
7296 | valaddr, | |
7297 | address)); | |
76a01679 | 7298 | if (real_type != NULL) |
1ed6ede0 | 7299 | return to_fixed_record_type (real_type, valaddr, address, NULL); |
76a01679 | 7300 | } |
4af88198 JB |
7301 | |
7302 | /* Check to see if there is a parallel ___XVZ variable. | |
7303 | If there is, then it provides the actual size of our type. */ | |
7304 | else if (ada_type_name (fixed_record_type) != NULL) | |
7305 | { | |
7306 | char *name = ada_type_name (fixed_record_type); | |
7307 | char *xvz_name = alloca (strlen (name) + 7 /* "___XVZ\0" */); | |
7308 | int xvz_found = 0; | |
7309 | LONGEST size; | |
7310 | ||
88c15c34 | 7311 | xsnprintf (xvz_name, strlen (name) + 7, "%s___XVZ", name); |
4af88198 JB |
7312 | size = get_int_var_value (xvz_name, &xvz_found); |
7313 | if (xvz_found && TYPE_LENGTH (fixed_record_type) != size) | |
7314 | { | |
7315 | fixed_record_type = copy_type (fixed_record_type); | |
7316 | TYPE_LENGTH (fixed_record_type) = size; | |
7317 | ||
7318 | /* The FIXED_RECORD_TYPE may have be a stub. We have | |
7319 | observed this when the debugging info is STABS, and | |
7320 | apparently it is something that is hard to fix. | |
7321 | ||
7322 | In practice, we don't need the actual type definition | |
7323 | at all, because the presence of the XVZ variable allows us | |
7324 | to assume that there must be a XVS type as well, which we | |
7325 | should be able to use later, when we need the actual type | |
7326 | definition. | |
7327 | ||
7328 | In the meantime, pretend that the "fixed" type we are | |
7329 | returning is NOT a stub, because this can cause trouble | |
7330 | when using this type to create new types targeting it. | |
7331 | Indeed, the associated creation routines often check | |
7332 | whether the target type is a stub and will try to replace | |
7333 | it, thus using a type with the wrong size. This, in turn, | |
7334 | might cause the new type to have the wrong size too. | |
7335 | Consider the case of an array, for instance, where the size | |
7336 | of the array is computed from the number of elements in | |
7337 | our array multiplied by the size of its element. */ | |
7338 | TYPE_STUB (fixed_record_type) = 0; | |
7339 | } | |
7340 | } | |
1ed6ede0 | 7341 | return fixed_record_type; |
4c4b4cd2 | 7342 | } |
d2e4a39e | 7343 | case TYPE_CODE_ARRAY: |
4c4b4cd2 | 7344 | return to_fixed_array_type (type, dval, 1); |
d2e4a39e AS |
7345 | case TYPE_CODE_UNION: |
7346 | if (dval == NULL) | |
4c4b4cd2 | 7347 | return type; |
d2e4a39e | 7348 | else |
4c4b4cd2 | 7349 | return to_fixed_variant_branch_type (type, valaddr, address, dval); |
d2e4a39e | 7350 | } |
14f9c5c9 AS |
7351 | } |
7352 | ||
f192137b JB |
7353 | /* The same as ada_to_fixed_type_1, except that it preserves the type |
7354 | if it is a TYPE_CODE_TYPEDEF of a type that is already fixed. | |
7355 | ada_to_fixed_type_1 would return the type referenced by TYPE. */ | |
7356 | ||
7357 | struct type * | |
7358 | ada_to_fixed_type (struct type *type, const gdb_byte *valaddr, | |
7359 | CORE_ADDR address, struct value *dval, int check_tag) | |
7360 | ||
7361 | { | |
7362 | struct type *fixed_type = | |
7363 | ada_to_fixed_type_1 (type, valaddr, address, dval, check_tag); | |
7364 | ||
7365 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF | |
7366 | && TYPE_TARGET_TYPE (type) == fixed_type) | |
7367 | return type; | |
7368 | ||
7369 | return fixed_type; | |
7370 | } | |
7371 | ||
14f9c5c9 | 7372 | /* A standard (static-sized) type corresponding as well as possible to |
4c4b4cd2 | 7373 | TYPE0, but based on no runtime data. */ |
14f9c5c9 | 7374 | |
d2e4a39e AS |
7375 | static struct type * |
7376 | to_static_fixed_type (struct type *type0) | |
14f9c5c9 | 7377 | { |
d2e4a39e | 7378 | struct type *type; |
14f9c5c9 AS |
7379 | |
7380 | if (type0 == NULL) | |
7381 | return NULL; | |
7382 | ||
876cecd0 | 7383 | if (TYPE_FIXED_INSTANCE (type0)) |
4c4b4cd2 PH |
7384 | return type0; |
7385 | ||
61ee279c | 7386 | type0 = ada_check_typedef (type0); |
d2e4a39e | 7387 | |
14f9c5c9 AS |
7388 | switch (TYPE_CODE (type0)) |
7389 | { | |
7390 | default: | |
7391 | return type0; | |
7392 | case TYPE_CODE_STRUCT: | |
7393 | type = dynamic_template_type (type0); | |
d2e4a39e | 7394 | if (type != NULL) |
4c4b4cd2 PH |
7395 | return template_to_static_fixed_type (type); |
7396 | else | |
7397 | return template_to_static_fixed_type (type0); | |
14f9c5c9 AS |
7398 | case TYPE_CODE_UNION: |
7399 | type = ada_find_parallel_type (type0, "___XVU"); | |
7400 | if (type != NULL) | |
4c4b4cd2 PH |
7401 | return template_to_static_fixed_type (type); |
7402 | else | |
7403 | return template_to_static_fixed_type (type0); | |
14f9c5c9 AS |
7404 | } |
7405 | } | |
7406 | ||
4c4b4cd2 PH |
7407 | /* A static approximation of TYPE with all type wrappers removed. */ |
7408 | ||
d2e4a39e AS |
7409 | static struct type * |
7410 | static_unwrap_type (struct type *type) | |
14f9c5c9 AS |
7411 | { |
7412 | if (ada_is_aligner_type (type)) | |
7413 | { | |
61ee279c | 7414 | struct type *type1 = TYPE_FIELD_TYPE (ada_check_typedef (type), 0); |
14f9c5c9 | 7415 | if (ada_type_name (type1) == NULL) |
4c4b4cd2 | 7416 | TYPE_NAME (type1) = ada_type_name (type); |
14f9c5c9 AS |
7417 | |
7418 | return static_unwrap_type (type1); | |
7419 | } | |
d2e4a39e | 7420 | else |
14f9c5c9 | 7421 | { |
d2e4a39e AS |
7422 | struct type *raw_real_type = ada_get_base_type (type); |
7423 | if (raw_real_type == type) | |
4c4b4cd2 | 7424 | return type; |
14f9c5c9 | 7425 | else |
4c4b4cd2 | 7426 | return to_static_fixed_type (raw_real_type); |
14f9c5c9 AS |
7427 | } |
7428 | } | |
7429 | ||
7430 | /* In some cases, incomplete and private types require | |
4c4b4cd2 | 7431 | cross-references that are not resolved as records (for example, |
14f9c5c9 AS |
7432 | type Foo; |
7433 | type FooP is access Foo; | |
7434 | V: FooP; | |
7435 | type Foo is array ...; | |
4c4b4cd2 | 7436 | ). In these cases, since there is no mechanism for producing |
14f9c5c9 AS |
7437 | cross-references to such types, we instead substitute for FooP a |
7438 | stub enumeration type that is nowhere resolved, and whose tag is | |
4c4b4cd2 | 7439 | the name of the actual type. Call these types "non-record stubs". */ |
14f9c5c9 AS |
7440 | |
7441 | /* A type equivalent to TYPE that is not a non-record stub, if one | |
4c4b4cd2 PH |
7442 | exists, otherwise TYPE. */ |
7443 | ||
d2e4a39e | 7444 | struct type * |
61ee279c | 7445 | ada_check_typedef (struct type *type) |
14f9c5c9 | 7446 | { |
727e3d2e JB |
7447 | if (type == NULL) |
7448 | return NULL; | |
7449 | ||
14f9c5c9 AS |
7450 | CHECK_TYPEDEF (type); |
7451 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_ENUM | |
529cad9c | 7452 | || !TYPE_STUB (type) |
14f9c5c9 AS |
7453 | || TYPE_TAG_NAME (type) == NULL) |
7454 | return type; | |
d2e4a39e | 7455 | else |
14f9c5c9 | 7456 | { |
d2e4a39e AS |
7457 | char *name = TYPE_TAG_NAME (type); |
7458 | struct type *type1 = ada_find_any_type (name); | |
14f9c5c9 AS |
7459 | return (type1 == NULL) ? type : type1; |
7460 | } | |
7461 | } | |
7462 | ||
7463 | /* A value representing the data at VALADDR/ADDRESS as described by | |
7464 | type TYPE0, but with a standard (static-sized) type that correctly | |
7465 | describes it. If VAL0 is not NULL and TYPE0 already is a standard | |
7466 | type, then return VAL0 [this feature is simply to avoid redundant | |
4c4b4cd2 | 7467 | creation of struct values]. */ |
14f9c5c9 | 7468 | |
4c4b4cd2 PH |
7469 | static struct value * |
7470 | ada_to_fixed_value_create (struct type *type0, CORE_ADDR address, | |
7471 | struct value *val0) | |
14f9c5c9 | 7472 | { |
1ed6ede0 | 7473 | struct type *type = ada_to_fixed_type (type0, 0, address, NULL, 1); |
14f9c5c9 AS |
7474 | if (type == type0 && val0 != NULL) |
7475 | return val0; | |
d2e4a39e | 7476 | else |
4c4b4cd2 PH |
7477 | return value_from_contents_and_address (type, 0, address); |
7478 | } | |
7479 | ||
7480 | /* A value representing VAL, but with a standard (static-sized) type | |
7481 | that correctly describes it. Does not necessarily create a new | |
7482 | value. */ | |
7483 | ||
7484 | static struct value * | |
7485 | ada_to_fixed_value (struct value *val) | |
7486 | { | |
df407dfe | 7487 | return ada_to_fixed_value_create (value_type (val), |
42ae5230 | 7488 | value_address (val), |
4c4b4cd2 | 7489 | val); |
14f9c5c9 AS |
7490 | } |
7491 | ||
4c4b4cd2 | 7492 | /* A value representing VAL, but with a standard (static-sized) type |
14f9c5c9 AS |
7493 | chosen to approximate the real type of VAL as well as possible, but |
7494 | without consulting any runtime values. For Ada dynamic-sized | |
4c4b4cd2 | 7495 | types, therefore, the type of the result is likely to be inaccurate. */ |
14f9c5c9 | 7496 | |
2c0b251b | 7497 | static struct value * |
d2e4a39e | 7498 | ada_to_static_fixed_value (struct value *val) |
14f9c5c9 | 7499 | { |
d2e4a39e | 7500 | struct type *type = |
df407dfe AC |
7501 | to_static_fixed_type (static_unwrap_type (value_type (val))); |
7502 | if (type == value_type (val)) | |
14f9c5c9 AS |
7503 | return val; |
7504 | else | |
4c4b4cd2 | 7505 | return coerce_unspec_val_to_type (val, type); |
14f9c5c9 | 7506 | } |
d2e4a39e | 7507 | \f |
14f9c5c9 | 7508 | |
14f9c5c9 AS |
7509 | /* Attributes */ |
7510 | ||
4c4b4cd2 PH |
7511 | /* Table mapping attribute numbers to names. |
7512 | NOTE: Keep up to date with enum ada_attribute definition in ada-lang.h. */ | |
14f9c5c9 | 7513 | |
d2e4a39e | 7514 | static const char *attribute_names[] = { |
14f9c5c9 AS |
7515 | "<?>", |
7516 | ||
d2e4a39e | 7517 | "first", |
14f9c5c9 AS |
7518 | "last", |
7519 | "length", | |
7520 | "image", | |
14f9c5c9 AS |
7521 | "max", |
7522 | "min", | |
4c4b4cd2 PH |
7523 | "modulus", |
7524 | "pos", | |
7525 | "size", | |
7526 | "tag", | |
14f9c5c9 | 7527 | "val", |
14f9c5c9 AS |
7528 | 0 |
7529 | }; | |
7530 | ||
d2e4a39e | 7531 | const char * |
4c4b4cd2 | 7532 | ada_attribute_name (enum exp_opcode n) |
14f9c5c9 | 7533 | { |
4c4b4cd2 PH |
7534 | if (n >= OP_ATR_FIRST && n <= (int) OP_ATR_VAL) |
7535 | return attribute_names[n - OP_ATR_FIRST + 1]; | |
14f9c5c9 AS |
7536 | else |
7537 | return attribute_names[0]; | |
7538 | } | |
7539 | ||
4c4b4cd2 | 7540 | /* Evaluate the 'POS attribute applied to ARG. */ |
14f9c5c9 | 7541 | |
4c4b4cd2 PH |
7542 | static LONGEST |
7543 | pos_atr (struct value *arg) | |
14f9c5c9 | 7544 | { |
24209737 PH |
7545 | struct value *val = coerce_ref (arg); |
7546 | struct type *type = value_type (val); | |
14f9c5c9 | 7547 | |
d2e4a39e | 7548 | if (!discrete_type_p (type)) |
323e0a4a | 7549 | error (_("'POS only defined on discrete types")); |
14f9c5c9 AS |
7550 | |
7551 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) | |
7552 | { | |
7553 | int i; | |
24209737 | 7554 | LONGEST v = value_as_long (val); |
14f9c5c9 | 7555 | |
d2e4a39e | 7556 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) |
4c4b4cd2 PH |
7557 | { |
7558 | if (v == TYPE_FIELD_BITPOS (type, i)) | |
7559 | return i; | |
7560 | } | |
323e0a4a | 7561 | error (_("enumeration value is invalid: can't find 'POS")); |
14f9c5c9 AS |
7562 | } |
7563 | else | |
24209737 | 7564 | return value_as_long (val); |
4c4b4cd2 PH |
7565 | } |
7566 | ||
7567 | static struct value * | |
3cb382c9 | 7568 | value_pos_atr (struct type *type, struct value *arg) |
4c4b4cd2 | 7569 | { |
3cb382c9 | 7570 | return value_from_longest (type, pos_atr (arg)); |
14f9c5c9 AS |
7571 | } |
7572 | ||
4c4b4cd2 | 7573 | /* Evaluate the TYPE'VAL attribute applied to ARG. */ |
14f9c5c9 | 7574 | |
d2e4a39e AS |
7575 | static struct value * |
7576 | value_val_atr (struct type *type, struct value *arg) | |
14f9c5c9 | 7577 | { |
d2e4a39e | 7578 | if (!discrete_type_p (type)) |
323e0a4a | 7579 | error (_("'VAL only defined on discrete types")); |
df407dfe | 7580 | if (!integer_type_p (value_type (arg))) |
323e0a4a | 7581 | error (_("'VAL requires integral argument")); |
14f9c5c9 AS |
7582 | |
7583 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) | |
7584 | { | |
7585 | long pos = value_as_long (arg); | |
7586 | if (pos < 0 || pos >= TYPE_NFIELDS (type)) | |
323e0a4a | 7587 | error (_("argument to 'VAL out of range")); |
d2e4a39e | 7588 | return value_from_longest (type, TYPE_FIELD_BITPOS (type, pos)); |
14f9c5c9 AS |
7589 | } |
7590 | else | |
7591 | return value_from_longest (type, value_as_long (arg)); | |
7592 | } | |
14f9c5c9 | 7593 | \f |
d2e4a39e | 7594 | |
4c4b4cd2 | 7595 | /* Evaluation */ |
14f9c5c9 | 7596 | |
4c4b4cd2 PH |
7597 | /* True if TYPE appears to be an Ada character type. |
7598 | [At the moment, this is true only for Character and Wide_Character; | |
7599 | It is a heuristic test that could stand improvement]. */ | |
14f9c5c9 | 7600 | |
d2e4a39e AS |
7601 | int |
7602 | ada_is_character_type (struct type *type) | |
14f9c5c9 | 7603 | { |
7b9f71f2 JB |
7604 | const char *name; |
7605 | ||
7606 | /* If the type code says it's a character, then assume it really is, | |
7607 | and don't check any further. */ | |
7608 | if (TYPE_CODE (type) == TYPE_CODE_CHAR) | |
7609 | return 1; | |
7610 | ||
7611 | /* Otherwise, assume it's a character type iff it is a discrete type | |
7612 | with a known character type name. */ | |
7613 | name = ada_type_name (type); | |
7614 | return (name != NULL | |
7615 | && (TYPE_CODE (type) == TYPE_CODE_INT | |
7616 | || TYPE_CODE (type) == TYPE_CODE_RANGE) | |
7617 | && (strcmp (name, "character") == 0 | |
7618 | || strcmp (name, "wide_character") == 0 | |
5a517ebd | 7619 | || strcmp (name, "wide_wide_character") == 0 |
7b9f71f2 | 7620 | || strcmp (name, "unsigned char") == 0)); |
14f9c5c9 AS |
7621 | } |
7622 | ||
4c4b4cd2 | 7623 | /* True if TYPE appears to be an Ada string type. */ |
14f9c5c9 AS |
7624 | |
7625 | int | |
ebf56fd3 | 7626 | ada_is_string_type (struct type *type) |
14f9c5c9 | 7627 | { |
61ee279c | 7628 | type = ada_check_typedef (type); |
d2e4a39e | 7629 | if (type != NULL |
14f9c5c9 | 7630 | && TYPE_CODE (type) != TYPE_CODE_PTR |
76a01679 JB |
7631 | && (ada_is_simple_array_type (type) |
7632 | || ada_is_array_descriptor_type (type)) | |
14f9c5c9 AS |
7633 | && ada_array_arity (type) == 1) |
7634 | { | |
7635 | struct type *elttype = ada_array_element_type (type, 1); | |
7636 | ||
7637 | return ada_is_character_type (elttype); | |
7638 | } | |
d2e4a39e | 7639 | else |
14f9c5c9 AS |
7640 | return 0; |
7641 | } | |
7642 | ||
7643 | ||
7644 | /* True if TYPE is a struct type introduced by the compiler to force the | |
7645 | alignment of a value. Such types have a single field with a | |
4c4b4cd2 | 7646 | distinctive name. */ |
14f9c5c9 AS |
7647 | |
7648 | int | |
ebf56fd3 | 7649 | ada_is_aligner_type (struct type *type) |
14f9c5c9 | 7650 | { |
61ee279c | 7651 | type = ada_check_typedef (type); |
714e53ab PH |
7652 | |
7653 | /* If we can find a parallel XVS type, then the XVS type should | |
7654 | be used instead of this type. And hence, this is not an aligner | |
7655 | type. */ | |
7656 | if (ada_find_parallel_type (type, "___XVS") != NULL) | |
7657 | return 0; | |
7658 | ||
14f9c5c9 | 7659 | return (TYPE_CODE (type) == TYPE_CODE_STRUCT |
4c4b4cd2 PH |
7660 | && TYPE_NFIELDS (type) == 1 |
7661 | && strcmp (TYPE_FIELD_NAME (type, 0), "F") == 0); | |
14f9c5c9 AS |
7662 | } |
7663 | ||
7664 | /* If there is an ___XVS-convention type parallel to SUBTYPE, return | |
4c4b4cd2 | 7665 | the parallel type. */ |
14f9c5c9 | 7666 | |
d2e4a39e AS |
7667 | struct type * |
7668 | ada_get_base_type (struct type *raw_type) | |
14f9c5c9 | 7669 | { |
d2e4a39e AS |
7670 | struct type *real_type_namer; |
7671 | struct type *raw_real_type; | |
14f9c5c9 AS |
7672 | |
7673 | if (raw_type == NULL || TYPE_CODE (raw_type) != TYPE_CODE_STRUCT) | |
7674 | return raw_type; | |
7675 | ||
284614f0 JB |
7676 | if (ada_is_aligner_type (raw_type)) |
7677 | /* The encoding specifies that we should always use the aligner type. | |
7678 | So, even if this aligner type has an associated XVS type, we should | |
7679 | simply ignore it. | |
7680 | ||
7681 | According to the compiler gurus, an XVS type parallel to an aligner | |
7682 | type may exist because of a stabs limitation. In stabs, aligner | |
7683 | types are empty because the field has a variable-sized type, and | |
7684 | thus cannot actually be used as an aligner type. As a result, | |
7685 | we need the associated parallel XVS type to decode the type. | |
7686 | Since the policy in the compiler is to not change the internal | |
7687 | representation based on the debugging info format, we sometimes | |
7688 | end up having a redundant XVS type parallel to the aligner type. */ | |
7689 | return raw_type; | |
7690 | ||
14f9c5c9 | 7691 | real_type_namer = ada_find_parallel_type (raw_type, "___XVS"); |
d2e4a39e | 7692 | if (real_type_namer == NULL |
14f9c5c9 AS |
7693 | || TYPE_CODE (real_type_namer) != TYPE_CODE_STRUCT |
7694 | || TYPE_NFIELDS (real_type_namer) != 1) | |
7695 | return raw_type; | |
7696 | ||
7697 | raw_real_type = ada_find_any_type (TYPE_FIELD_NAME (real_type_namer, 0)); | |
d2e4a39e | 7698 | if (raw_real_type == NULL) |
14f9c5c9 AS |
7699 | return raw_type; |
7700 | else | |
7701 | return raw_real_type; | |
d2e4a39e | 7702 | } |
14f9c5c9 | 7703 | |
4c4b4cd2 | 7704 | /* The type of value designated by TYPE, with all aligners removed. */ |
14f9c5c9 | 7705 | |
d2e4a39e AS |
7706 | struct type * |
7707 | ada_aligned_type (struct type *type) | |
14f9c5c9 AS |
7708 | { |
7709 | if (ada_is_aligner_type (type)) | |
7710 | return ada_aligned_type (TYPE_FIELD_TYPE (type, 0)); | |
7711 | else | |
7712 | return ada_get_base_type (type); | |
7713 | } | |
7714 | ||
7715 | ||
7716 | /* The address of the aligned value in an object at address VALADDR | |
4c4b4cd2 | 7717 | having type TYPE. Assumes ada_is_aligner_type (TYPE). */ |
14f9c5c9 | 7718 | |
fc1a4b47 AC |
7719 | const gdb_byte * |
7720 | ada_aligned_value_addr (struct type *type, const gdb_byte *valaddr) | |
14f9c5c9 | 7721 | { |
d2e4a39e | 7722 | if (ada_is_aligner_type (type)) |
14f9c5c9 | 7723 | return ada_aligned_value_addr (TYPE_FIELD_TYPE (type, 0), |
4c4b4cd2 PH |
7724 | valaddr + |
7725 | TYPE_FIELD_BITPOS (type, | |
7726 | 0) / TARGET_CHAR_BIT); | |
14f9c5c9 AS |
7727 | else |
7728 | return valaddr; | |
7729 | } | |
7730 | ||
4c4b4cd2 PH |
7731 | |
7732 | ||
14f9c5c9 | 7733 | /* The printed representation of an enumeration literal with encoded |
4c4b4cd2 | 7734 | name NAME. The value is good to the next call of ada_enum_name. */ |
d2e4a39e AS |
7735 | const char * |
7736 | ada_enum_name (const char *name) | |
14f9c5c9 | 7737 | { |
4c4b4cd2 PH |
7738 | static char *result; |
7739 | static size_t result_len = 0; | |
d2e4a39e | 7740 | char *tmp; |
14f9c5c9 | 7741 | |
4c4b4cd2 PH |
7742 | /* First, unqualify the enumeration name: |
7743 | 1. Search for the last '.' character. If we find one, then skip | |
76a01679 JB |
7744 | all the preceeding characters, the unqualified name starts |
7745 | right after that dot. | |
4c4b4cd2 | 7746 | 2. Otherwise, we may be debugging on a target where the compiler |
76a01679 JB |
7747 | translates dots into "__". Search forward for double underscores, |
7748 | but stop searching when we hit an overloading suffix, which is | |
7749 | of the form "__" followed by digits. */ | |
4c4b4cd2 | 7750 | |
c3e5cd34 PH |
7751 | tmp = strrchr (name, '.'); |
7752 | if (tmp != NULL) | |
4c4b4cd2 PH |
7753 | name = tmp + 1; |
7754 | else | |
14f9c5c9 | 7755 | { |
4c4b4cd2 PH |
7756 | while ((tmp = strstr (name, "__")) != NULL) |
7757 | { | |
7758 | if (isdigit (tmp[2])) | |
7759 | break; | |
7760 | else | |
7761 | name = tmp + 2; | |
7762 | } | |
14f9c5c9 AS |
7763 | } |
7764 | ||
7765 | if (name[0] == 'Q') | |
7766 | { | |
14f9c5c9 AS |
7767 | int v; |
7768 | if (name[1] == 'U' || name[1] == 'W') | |
4c4b4cd2 PH |
7769 | { |
7770 | if (sscanf (name + 2, "%x", &v) != 1) | |
7771 | return name; | |
7772 | } | |
14f9c5c9 | 7773 | else |
4c4b4cd2 | 7774 | return name; |
14f9c5c9 | 7775 | |
4c4b4cd2 | 7776 | GROW_VECT (result, result_len, 16); |
14f9c5c9 | 7777 | if (isascii (v) && isprint (v)) |
88c15c34 | 7778 | xsnprintf (result, result_len, "'%c'", v); |
14f9c5c9 | 7779 | else if (name[1] == 'U') |
88c15c34 | 7780 | xsnprintf (result, result_len, "[\"%02x\"]", v); |
14f9c5c9 | 7781 | else |
88c15c34 | 7782 | xsnprintf (result, result_len, "[\"%04x\"]", v); |
14f9c5c9 AS |
7783 | |
7784 | return result; | |
7785 | } | |
d2e4a39e | 7786 | else |
4c4b4cd2 | 7787 | { |
c3e5cd34 PH |
7788 | tmp = strstr (name, "__"); |
7789 | if (tmp == NULL) | |
7790 | tmp = strstr (name, "$"); | |
7791 | if (tmp != NULL) | |
4c4b4cd2 PH |
7792 | { |
7793 | GROW_VECT (result, result_len, tmp - name + 1); | |
7794 | strncpy (result, name, tmp - name); | |
7795 | result[tmp - name] = '\0'; | |
7796 | return result; | |
7797 | } | |
7798 | ||
7799 | return name; | |
7800 | } | |
14f9c5c9 AS |
7801 | } |
7802 | ||
14f9c5c9 AS |
7803 | /* Evaluate the subexpression of EXP starting at *POS as for |
7804 | evaluate_type, updating *POS to point just past the evaluated | |
4c4b4cd2 | 7805 | expression. */ |
14f9c5c9 | 7806 | |
d2e4a39e AS |
7807 | static struct value * |
7808 | evaluate_subexp_type (struct expression *exp, int *pos) | |
14f9c5c9 | 7809 | { |
4b27a620 | 7810 | return evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); |
14f9c5c9 AS |
7811 | } |
7812 | ||
7813 | /* If VAL is wrapped in an aligner or subtype wrapper, return the | |
4c4b4cd2 | 7814 | value it wraps. */ |
14f9c5c9 | 7815 | |
d2e4a39e AS |
7816 | static struct value * |
7817 | unwrap_value (struct value *val) | |
14f9c5c9 | 7818 | { |
df407dfe | 7819 | struct type *type = ada_check_typedef (value_type (val)); |
14f9c5c9 AS |
7820 | if (ada_is_aligner_type (type)) |
7821 | { | |
de4d072f | 7822 | struct value *v = ada_value_struct_elt (val, "F", 0); |
df407dfe | 7823 | struct type *val_type = ada_check_typedef (value_type (v)); |
14f9c5c9 | 7824 | if (ada_type_name (val_type) == NULL) |
4c4b4cd2 | 7825 | TYPE_NAME (val_type) = ada_type_name (type); |
14f9c5c9 AS |
7826 | |
7827 | return unwrap_value (v); | |
7828 | } | |
d2e4a39e | 7829 | else |
14f9c5c9 | 7830 | { |
d2e4a39e | 7831 | struct type *raw_real_type = |
61ee279c | 7832 | ada_check_typedef (ada_get_base_type (type)); |
d2e4a39e | 7833 | |
14f9c5c9 | 7834 | if (type == raw_real_type) |
4c4b4cd2 | 7835 | return val; |
14f9c5c9 | 7836 | |
d2e4a39e | 7837 | return |
4c4b4cd2 PH |
7838 | coerce_unspec_val_to_type |
7839 | (val, ada_to_fixed_type (raw_real_type, 0, | |
42ae5230 | 7840 | value_address (val), |
1ed6ede0 | 7841 | NULL, 1)); |
14f9c5c9 AS |
7842 | } |
7843 | } | |
d2e4a39e AS |
7844 | |
7845 | static struct value * | |
7846 | cast_to_fixed (struct type *type, struct value *arg) | |
14f9c5c9 AS |
7847 | { |
7848 | LONGEST val; | |
7849 | ||
df407dfe | 7850 | if (type == value_type (arg)) |
14f9c5c9 | 7851 | return arg; |
df407dfe | 7852 | else if (ada_is_fixed_point_type (value_type (arg))) |
d2e4a39e | 7853 | val = ada_float_to_fixed (type, |
df407dfe | 7854 | ada_fixed_to_float (value_type (arg), |
4c4b4cd2 | 7855 | value_as_long (arg))); |
d2e4a39e | 7856 | else |
14f9c5c9 | 7857 | { |
a53b7a21 | 7858 | DOUBLEST argd = value_as_double (arg); |
14f9c5c9 AS |
7859 | val = ada_float_to_fixed (type, argd); |
7860 | } | |
7861 | ||
7862 | return value_from_longest (type, val); | |
7863 | } | |
7864 | ||
d2e4a39e | 7865 | static struct value * |
a53b7a21 | 7866 | cast_from_fixed (struct type *type, struct value *arg) |
14f9c5c9 | 7867 | { |
df407dfe | 7868 | DOUBLEST val = ada_fixed_to_float (value_type (arg), |
4c4b4cd2 | 7869 | value_as_long (arg)); |
a53b7a21 | 7870 | return value_from_double (type, val); |
14f9c5c9 AS |
7871 | } |
7872 | ||
4c4b4cd2 PH |
7873 | /* Coerce VAL as necessary for assignment to an lval of type TYPE, and |
7874 | return the converted value. */ | |
7875 | ||
d2e4a39e AS |
7876 | static struct value * |
7877 | coerce_for_assign (struct type *type, struct value *val) | |
14f9c5c9 | 7878 | { |
df407dfe | 7879 | struct type *type2 = value_type (val); |
14f9c5c9 AS |
7880 | if (type == type2) |
7881 | return val; | |
7882 | ||
61ee279c PH |
7883 | type2 = ada_check_typedef (type2); |
7884 | type = ada_check_typedef (type); | |
14f9c5c9 | 7885 | |
d2e4a39e AS |
7886 | if (TYPE_CODE (type2) == TYPE_CODE_PTR |
7887 | && TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
14f9c5c9 AS |
7888 | { |
7889 | val = ada_value_ind (val); | |
df407dfe | 7890 | type2 = value_type (val); |
14f9c5c9 AS |
7891 | } |
7892 | ||
d2e4a39e | 7893 | if (TYPE_CODE (type2) == TYPE_CODE_ARRAY |
14f9c5c9 AS |
7894 | && TYPE_CODE (type) == TYPE_CODE_ARRAY) |
7895 | { | |
7896 | if (TYPE_LENGTH (type2) != TYPE_LENGTH (type) | |
4c4b4cd2 PH |
7897 | || TYPE_LENGTH (TYPE_TARGET_TYPE (type2)) |
7898 | != TYPE_LENGTH (TYPE_TARGET_TYPE (type2))) | |
323e0a4a | 7899 | error (_("Incompatible types in assignment")); |
04624583 | 7900 | deprecated_set_value_type (val, type); |
14f9c5c9 | 7901 | } |
d2e4a39e | 7902 | return val; |
14f9c5c9 AS |
7903 | } |
7904 | ||
4c4b4cd2 PH |
7905 | static struct value * |
7906 | ada_value_binop (struct value *arg1, struct value *arg2, enum exp_opcode op) | |
7907 | { | |
7908 | struct value *val; | |
7909 | struct type *type1, *type2; | |
7910 | LONGEST v, v1, v2; | |
7911 | ||
994b9211 AC |
7912 | arg1 = coerce_ref (arg1); |
7913 | arg2 = coerce_ref (arg2); | |
df407dfe AC |
7914 | type1 = base_type (ada_check_typedef (value_type (arg1))); |
7915 | type2 = base_type (ada_check_typedef (value_type (arg2))); | |
4c4b4cd2 | 7916 | |
76a01679 JB |
7917 | if (TYPE_CODE (type1) != TYPE_CODE_INT |
7918 | || TYPE_CODE (type2) != TYPE_CODE_INT) | |
4c4b4cd2 PH |
7919 | return value_binop (arg1, arg2, op); |
7920 | ||
76a01679 | 7921 | switch (op) |
4c4b4cd2 PH |
7922 | { |
7923 | case BINOP_MOD: | |
7924 | case BINOP_DIV: | |
7925 | case BINOP_REM: | |
7926 | break; | |
7927 | default: | |
7928 | return value_binop (arg1, arg2, op); | |
7929 | } | |
7930 | ||
7931 | v2 = value_as_long (arg2); | |
7932 | if (v2 == 0) | |
323e0a4a | 7933 | error (_("second operand of %s must not be zero."), op_string (op)); |
4c4b4cd2 PH |
7934 | |
7935 | if (TYPE_UNSIGNED (type1) || op == BINOP_MOD) | |
7936 | return value_binop (arg1, arg2, op); | |
7937 | ||
7938 | v1 = value_as_long (arg1); | |
7939 | switch (op) | |
7940 | { | |
7941 | case BINOP_DIV: | |
7942 | v = v1 / v2; | |
76a01679 JB |
7943 | if (!TRUNCATION_TOWARDS_ZERO && v1 * (v1 % v2) < 0) |
7944 | v += v > 0 ? -1 : 1; | |
4c4b4cd2 PH |
7945 | break; |
7946 | case BINOP_REM: | |
7947 | v = v1 % v2; | |
76a01679 JB |
7948 | if (v * v1 < 0) |
7949 | v -= v2; | |
4c4b4cd2 PH |
7950 | break; |
7951 | default: | |
7952 | /* Should not reach this point. */ | |
7953 | v = 0; | |
7954 | } | |
7955 | ||
7956 | val = allocate_value (type1); | |
990a07ab | 7957 | store_unsigned_integer (value_contents_raw (val), |
e17a4113 UW |
7958 | TYPE_LENGTH (value_type (val)), |
7959 | gdbarch_byte_order (get_type_arch (type1)), v); | |
4c4b4cd2 PH |
7960 | return val; |
7961 | } | |
7962 | ||
7963 | static int | |
7964 | ada_value_equal (struct value *arg1, struct value *arg2) | |
7965 | { | |
df407dfe AC |
7966 | if (ada_is_direct_array_type (value_type (arg1)) |
7967 | || ada_is_direct_array_type (value_type (arg2))) | |
4c4b4cd2 | 7968 | { |
f58b38bf JB |
7969 | /* Automatically dereference any array reference before |
7970 | we attempt to perform the comparison. */ | |
7971 | arg1 = ada_coerce_ref (arg1); | |
7972 | arg2 = ada_coerce_ref (arg2); | |
7973 | ||
4c4b4cd2 PH |
7974 | arg1 = ada_coerce_to_simple_array (arg1); |
7975 | arg2 = ada_coerce_to_simple_array (arg2); | |
df407dfe AC |
7976 | if (TYPE_CODE (value_type (arg1)) != TYPE_CODE_ARRAY |
7977 | || TYPE_CODE (value_type (arg2)) != TYPE_CODE_ARRAY) | |
323e0a4a | 7978 | error (_("Attempt to compare array with non-array")); |
4c4b4cd2 | 7979 | /* FIXME: The following works only for types whose |
76a01679 JB |
7980 | representations use all bits (no padding or undefined bits) |
7981 | and do not have user-defined equality. */ | |
7982 | return | |
df407dfe | 7983 | TYPE_LENGTH (value_type (arg1)) == TYPE_LENGTH (value_type (arg2)) |
0fd88904 | 7984 | && memcmp (value_contents (arg1), value_contents (arg2), |
df407dfe | 7985 | TYPE_LENGTH (value_type (arg1))) == 0; |
4c4b4cd2 PH |
7986 | } |
7987 | return value_equal (arg1, arg2); | |
7988 | } | |
7989 | ||
52ce6436 PH |
7990 | /* Total number of component associations in the aggregate starting at |
7991 | index PC in EXP. Assumes that index PC is the start of an | |
7992 | OP_AGGREGATE. */ | |
7993 | ||
7994 | static int | |
7995 | num_component_specs (struct expression *exp, int pc) | |
7996 | { | |
7997 | int n, m, i; | |
7998 | m = exp->elts[pc + 1].longconst; | |
7999 | pc += 3; | |
8000 | n = 0; | |
8001 | for (i = 0; i < m; i += 1) | |
8002 | { | |
8003 | switch (exp->elts[pc].opcode) | |
8004 | { | |
8005 | default: | |
8006 | n += 1; | |
8007 | break; | |
8008 | case OP_CHOICES: | |
8009 | n += exp->elts[pc + 1].longconst; | |
8010 | break; | |
8011 | } | |
8012 | ada_evaluate_subexp (NULL, exp, &pc, EVAL_SKIP); | |
8013 | } | |
8014 | return n; | |
8015 | } | |
8016 | ||
8017 | /* Assign the result of evaluating EXP starting at *POS to the INDEXth | |
8018 | component of LHS (a simple array or a record), updating *POS past | |
8019 | the expression, assuming that LHS is contained in CONTAINER. Does | |
8020 | not modify the inferior's memory, nor does it modify LHS (unless | |
8021 | LHS == CONTAINER). */ | |
8022 | ||
8023 | static void | |
8024 | assign_component (struct value *container, struct value *lhs, LONGEST index, | |
8025 | struct expression *exp, int *pos) | |
8026 | { | |
8027 | struct value *mark = value_mark (); | |
8028 | struct value *elt; | |
8029 | if (TYPE_CODE (value_type (lhs)) == TYPE_CODE_ARRAY) | |
8030 | { | |
22601c15 UW |
8031 | struct type *index_type = builtin_type (exp->gdbarch)->builtin_int; |
8032 | struct value *index_val = value_from_longest (index_type, index); | |
52ce6436 PH |
8033 | elt = unwrap_value (ada_value_subscript (lhs, 1, &index_val)); |
8034 | } | |
8035 | else | |
8036 | { | |
8037 | elt = ada_index_struct_field (index, lhs, 0, value_type (lhs)); | |
8038 | elt = ada_to_fixed_value (unwrap_value (elt)); | |
8039 | } | |
8040 | ||
8041 | if (exp->elts[*pos].opcode == OP_AGGREGATE) | |
8042 | assign_aggregate (container, elt, exp, pos, EVAL_NORMAL); | |
8043 | else | |
8044 | value_assign_to_component (container, elt, | |
8045 | ada_evaluate_subexp (NULL, exp, pos, | |
8046 | EVAL_NORMAL)); | |
8047 | ||
8048 | value_free_to_mark (mark); | |
8049 | } | |
8050 | ||
8051 | /* Assuming that LHS represents an lvalue having a record or array | |
8052 | type, and EXP->ELTS[*POS] is an OP_AGGREGATE, evaluate an assignment | |
8053 | of that aggregate's value to LHS, advancing *POS past the | |
8054 | aggregate. NOSIDE is as for evaluate_subexp. CONTAINER is an | |
8055 | lvalue containing LHS (possibly LHS itself). Does not modify | |
8056 | the inferior's memory, nor does it modify the contents of | |
8057 | LHS (unless == CONTAINER). Returns the modified CONTAINER. */ | |
8058 | ||
8059 | static struct value * | |
8060 | assign_aggregate (struct value *container, | |
8061 | struct value *lhs, struct expression *exp, | |
8062 | int *pos, enum noside noside) | |
8063 | { | |
8064 | struct type *lhs_type; | |
8065 | int n = exp->elts[*pos+1].longconst; | |
8066 | LONGEST low_index, high_index; | |
8067 | int num_specs; | |
8068 | LONGEST *indices; | |
8069 | int max_indices, num_indices; | |
8070 | int is_array_aggregate; | |
8071 | int i; | |
8072 | struct value *mark = value_mark (); | |
8073 | ||
8074 | *pos += 3; | |
8075 | if (noside != EVAL_NORMAL) | |
8076 | { | |
8077 | int i; | |
8078 | for (i = 0; i < n; i += 1) | |
8079 | ada_evaluate_subexp (NULL, exp, pos, noside); | |
8080 | return container; | |
8081 | } | |
8082 | ||
8083 | container = ada_coerce_ref (container); | |
8084 | if (ada_is_direct_array_type (value_type (container))) | |
8085 | container = ada_coerce_to_simple_array (container); | |
8086 | lhs = ada_coerce_ref (lhs); | |
8087 | if (!deprecated_value_modifiable (lhs)) | |
8088 | error (_("Left operand of assignment is not a modifiable lvalue.")); | |
8089 | ||
8090 | lhs_type = value_type (lhs); | |
8091 | if (ada_is_direct_array_type (lhs_type)) | |
8092 | { | |
8093 | lhs = ada_coerce_to_simple_array (lhs); | |
8094 | lhs_type = value_type (lhs); | |
8095 | low_index = TYPE_ARRAY_LOWER_BOUND_VALUE (lhs_type); | |
8096 | high_index = TYPE_ARRAY_UPPER_BOUND_VALUE (lhs_type); | |
8097 | is_array_aggregate = 1; | |
8098 | } | |
8099 | else if (TYPE_CODE (lhs_type) == TYPE_CODE_STRUCT) | |
8100 | { | |
8101 | low_index = 0; | |
8102 | high_index = num_visible_fields (lhs_type) - 1; | |
8103 | is_array_aggregate = 0; | |
8104 | } | |
8105 | else | |
8106 | error (_("Left-hand side must be array or record.")); | |
8107 | ||
8108 | num_specs = num_component_specs (exp, *pos - 3); | |
8109 | max_indices = 4 * num_specs + 4; | |
8110 | indices = alloca (max_indices * sizeof (indices[0])); | |
8111 | indices[0] = indices[1] = low_index - 1; | |
8112 | indices[2] = indices[3] = high_index + 1; | |
8113 | num_indices = 4; | |
8114 | ||
8115 | for (i = 0; i < n; i += 1) | |
8116 | { | |
8117 | switch (exp->elts[*pos].opcode) | |
8118 | { | |
8119 | case OP_CHOICES: | |
8120 | aggregate_assign_from_choices (container, lhs, exp, pos, indices, | |
8121 | &num_indices, max_indices, | |
8122 | low_index, high_index); | |
8123 | break; | |
8124 | case OP_POSITIONAL: | |
8125 | aggregate_assign_positional (container, lhs, exp, pos, indices, | |
8126 | &num_indices, max_indices, | |
8127 | low_index, high_index); | |
8128 | break; | |
8129 | case OP_OTHERS: | |
8130 | if (i != n-1) | |
8131 | error (_("Misplaced 'others' clause")); | |
8132 | aggregate_assign_others (container, lhs, exp, pos, indices, | |
8133 | num_indices, low_index, high_index); | |
8134 | break; | |
8135 | default: | |
8136 | error (_("Internal error: bad aggregate clause")); | |
8137 | } | |
8138 | } | |
8139 | ||
8140 | return container; | |
8141 | } | |
8142 | ||
8143 | /* Assign into the component of LHS indexed by the OP_POSITIONAL | |
8144 | construct at *POS, updating *POS past the construct, given that | |
8145 | the positions are relative to lower bound LOW, where HIGH is the | |
8146 | upper bound. Record the position in INDICES[0 .. MAX_INDICES-1] | |
8147 | updating *NUM_INDICES as needed. CONTAINER is as for | |
8148 | assign_aggregate. */ | |
8149 | static void | |
8150 | aggregate_assign_positional (struct value *container, | |
8151 | struct value *lhs, struct expression *exp, | |
8152 | int *pos, LONGEST *indices, int *num_indices, | |
8153 | int max_indices, LONGEST low, LONGEST high) | |
8154 | { | |
8155 | LONGEST ind = longest_to_int (exp->elts[*pos + 1].longconst) + low; | |
8156 | ||
8157 | if (ind - 1 == high) | |
e1d5a0d2 | 8158 | warning (_("Extra components in aggregate ignored.")); |
52ce6436 PH |
8159 | if (ind <= high) |
8160 | { | |
8161 | add_component_interval (ind, ind, indices, num_indices, max_indices); | |
8162 | *pos += 3; | |
8163 | assign_component (container, lhs, ind, exp, pos); | |
8164 | } | |
8165 | else | |
8166 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
8167 | } | |
8168 | ||
8169 | /* Assign into the components of LHS indexed by the OP_CHOICES | |
8170 | construct at *POS, updating *POS past the construct, given that | |
8171 | the allowable indices are LOW..HIGH. Record the indices assigned | |
8172 | to in INDICES[0 .. MAX_INDICES-1], updating *NUM_INDICES as | |
8173 | needed. CONTAINER is as for assign_aggregate. */ | |
8174 | static void | |
8175 | aggregate_assign_from_choices (struct value *container, | |
8176 | struct value *lhs, struct expression *exp, | |
8177 | int *pos, LONGEST *indices, int *num_indices, | |
8178 | int max_indices, LONGEST low, LONGEST high) | |
8179 | { | |
8180 | int j; | |
8181 | int n_choices = longest_to_int (exp->elts[*pos+1].longconst); | |
8182 | int choice_pos, expr_pc; | |
8183 | int is_array = ada_is_direct_array_type (value_type (lhs)); | |
8184 | ||
8185 | choice_pos = *pos += 3; | |
8186 | ||
8187 | for (j = 0; j < n_choices; j += 1) | |
8188 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
8189 | expr_pc = *pos; | |
8190 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
8191 | ||
8192 | for (j = 0; j < n_choices; j += 1) | |
8193 | { | |
8194 | LONGEST lower, upper; | |
8195 | enum exp_opcode op = exp->elts[choice_pos].opcode; | |
8196 | if (op == OP_DISCRETE_RANGE) | |
8197 | { | |
8198 | choice_pos += 1; | |
8199 | lower = value_as_long (ada_evaluate_subexp (NULL, exp, pos, | |
8200 | EVAL_NORMAL)); | |
8201 | upper = value_as_long (ada_evaluate_subexp (NULL, exp, pos, | |
8202 | EVAL_NORMAL)); | |
8203 | } | |
8204 | else if (is_array) | |
8205 | { | |
8206 | lower = value_as_long (ada_evaluate_subexp (NULL, exp, &choice_pos, | |
8207 | EVAL_NORMAL)); | |
8208 | upper = lower; | |
8209 | } | |
8210 | else | |
8211 | { | |
8212 | int ind; | |
8213 | char *name; | |
8214 | switch (op) | |
8215 | { | |
8216 | case OP_NAME: | |
8217 | name = &exp->elts[choice_pos + 2].string; | |
8218 | break; | |
8219 | case OP_VAR_VALUE: | |
8220 | name = SYMBOL_NATURAL_NAME (exp->elts[choice_pos + 2].symbol); | |
8221 | break; | |
8222 | default: | |
8223 | error (_("Invalid record component association.")); | |
8224 | } | |
8225 | ada_evaluate_subexp (NULL, exp, &choice_pos, EVAL_SKIP); | |
8226 | ind = 0; | |
8227 | if (! find_struct_field (name, value_type (lhs), 0, | |
8228 | NULL, NULL, NULL, NULL, &ind)) | |
8229 | error (_("Unknown component name: %s."), name); | |
8230 | lower = upper = ind; | |
8231 | } | |
8232 | ||
8233 | if (lower <= upper && (lower < low || upper > high)) | |
8234 | error (_("Index in component association out of bounds.")); | |
8235 | ||
8236 | add_component_interval (lower, upper, indices, num_indices, | |
8237 | max_indices); | |
8238 | while (lower <= upper) | |
8239 | { | |
8240 | int pos1; | |
8241 | pos1 = expr_pc; | |
8242 | assign_component (container, lhs, lower, exp, &pos1); | |
8243 | lower += 1; | |
8244 | } | |
8245 | } | |
8246 | } | |
8247 | ||
8248 | /* Assign the value of the expression in the OP_OTHERS construct in | |
8249 | EXP at *POS into the components of LHS indexed from LOW .. HIGH that | |
8250 | have not been previously assigned. The index intervals already assigned | |
8251 | are in INDICES[0 .. NUM_INDICES-1]. Updates *POS to after the | |
8252 | OP_OTHERS clause. CONTAINER is as for assign_aggregate*/ | |
8253 | static void | |
8254 | aggregate_assign_others (struct value *container, | |
8255 | struct value *lhs, struct expression *exp, | |
8256 | int *pos, LONGEST *indices, int num_indices, | |
8257 | LONGEST low, LONGEST high) | |
8258 | { | |
8259 | int i; | |
8260 | int expr_pc = *pos+1; | |
8261 | ||
8262 | for (i = 0; i < num_indices - 2; i += 2) | |
8263 | { | |
8264 | LONGEST ind; | |
8265 | for (ind = indices[i + 1] + 1; ind < indices[i + 2]; ind += 1) | |
8266 | { | |
8267 | int pos; | |
8268 | pos = expr_pc; | |
8269 | assign_component (container, lhs, ind, exp, &pos); | |
8270 | } | |
8271 | } | |
8272 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
8273 | } | |
8274 | ||
8275 | /* Add the interval [LOW .. HIGH] to the sorted set of intervals | |
8276 | [ INDICES[0] .. INDICES[1] ],..., [ INDICES[*SIZE-2] .. INDICES[*SIZE-1] ], | |
8277 | modifying *SIZE as needed. It is an error if *SIZE exceeds | |
8278 | MAX_SIZE. The resulting intervals do not overlap. */ | |
8279 | static void | |
8280 | add_component_interval (LONGEST low, LONGEST high, | |
8281 | LONGEST* indices, int *size, int max_size) | |
8282 | { | |
8283 | int i, j; | |
8284 | for (i = 0; i < *size; i += 2) { | |
8285 | if (high >= indices[i] && low <= indices[i + 1]) | |
8286 | { | |
8287 | int kh; | |
8288 | for (kh = i + 2; kh < *size; kh += 2) | |
8289 | if (high < indices[kh]) | |
8290 | break; | |
8291 | if (low < indices[i]) | |
8292 | indices[i] = low; | |
8293 | indices[i + 1] = indices[kh - 1]; | |
8294 | if (high > indices[i + 1]) | |
8295 | indices[i + 1] = high; | |
8296 | memcpy (indices + i + 2, indices + kh, *size - kh); | |
8297 | *size -= kh - i - 2; | |
8298 | return; | |
8299 | } | |
8300 | else if (high < indices[i]) | |
8301 | break; | |
8302 | } | |
8303 | ||
8304 | if (*size == max_size) | |
8305 | error (_("Internal error: miscounted aggregate components.")); | |
8306 | *size += 2; | |
8307 | for (j = *size-1; j >= i+2; j -= 1) | |
8308 | indices[j] = indices[j - 2]; | |
8309 | indices[i] = low; | |
8310 | indices[i + 1] = high; | |
8311 | } | |
8312 | ||
6e48bd2c JB |
8313 | /* Perform and Ada cast of ARG2 to type TYPE if the type of ARG2 |
8314 | is different. */ | |
8315 | ||
8316 | static struct value * | |
8317 | ada_value_cast (struct type *type, struct value *arg2, enum noside noside) | |
8318 | { | |
8319 | if (type == ada_check_typedef (value_type (arg2))) | |
8320 | return arg2; | |
8321 | ||
8322 | if (ada_is_fixed_point_type (type)) | |
8323 | return (cast_to_fixed (type, arg2)); | |
8324 | ||
8325 | if (ada_is_fixed_point_type (value_type (arg2))) | |
a53b7a21 | 8326 | return cast_from_fixed (type, arg2); |
6e48bd2c JB |
8327 | |
8328 | return value_cast (type, arg2); | |
8329 | } | |
8330 | ||
284614f0 JB |
8331 | /* Evaluating Ada expressions, and printing their result. |
8332 | ------------------------------------------------------ | |
8333 | ||
8334 | We usually evaluate an Ada expression in order to print its value. | |
8335 | We also evaluate an expression in order to print its type, which | |
8336 | happens during the EVAL_AVOID_SIDE_EFFECTS phase of the evaluation, | |
8337 | but we'll focus mostly on the EVAL_NORMAL phase. In practice, the | |
8338 | EVAL_AVOID_SIDE_EFFECTS phase allows us to simplify certain aspects of | |
8339 | the evaluation compared to the EVAL_NORMAL, but is otherwise very | |
8340 | similar. | |
8341 | ||
8342 | Evaluating expressions is a little more complicated for Ada entities | |
8343 | than it is for entities in languages such as C. The main reason for | |
8344 | this is that Ada provides types whose definition might be dynamic. | |
8345 | One example of such types is variant records. Or another example | |
8346 | would be an array whose bounds can only be known at run time. | |
8347 | ||
8348 | The following description is a general guide as to what should be | |
8349 | done (and what should NOT be done) in order to evaluate an expression | |
8350 | involving such types, and when. This does not cover how the semantic | |
8351 | information is encoded by GNAT as this is covered separatly. For the | |
8352 | document used as the reference for the GNAT encoding, see exp_dbug.ads | |
8353 | in the GNAT sources. | |
8354 | ||
8355 | Ideally, we should embed each part of this description next to its | |
8356 | associated code. Unfortunately, the amount of code is so vast right | |
8357 | now that it's hard to see whether the code handling a particular | |
8358 | situation might be duplicated or not. One day, when the code is | |
8359 | cleaned up, this guide might become redundant with the comments | |
8360 | inserted in the code, and we might want to remove it. | |
8361 | ||
8362 | When evaluating Ada expressions, the tricky issue is that they may | |
8363 | reference entities whose type contents and size are not statically | |
8364 | known. Consider for instance a variant record: | |
8365 | ||
8366 | type Rec (Empty : Boolean := True) is record | |
8367 | case Empty is | |
8368 | when True => null; | |
8369 | when False => Value : Integer; | |
8370 | end case; | |
8371 | end record; | |
8372 | Yes : Rec := (Empty => False, Value => 1); | |
8373 | No : Rec := (empty => True); | |
8374 | ||
8375 | The size and contents of that record depends on the value of the | |
8376 | descriminant (Rec.Empty). At this point, neither the debugging | |
8377 | information nor the associated type structure in GDB are able to | |
8378 | express such dynamic types. So what the debugger does is to create | |
8379 | "fixed" versions of the type that applies to the specific object. | |
8380 | We also informally refer to this opperation as "fixing" an object, | |
8381 | which means creating its associated fixed type. | |
8382 | ||
8383 | Example: when printing the value of variable "Yes" above, its fixed | |
8384 | type would look like this: | |
8385 | ||
8386 | type Rec is record | |
8387 | Empty : Boolean; | |
8388 | Value : Integer; | |
8389 | end record; | |
8390 | ||
8391 | On the other hand, if we printed the value of "No", its fixed type | |
8392 | would become: | |
8393 | ||
8394 | type Rec is record | |
8395 | Empty : Boolean; | |
8396 | end record; | |
8397 | ||
8398 | Things become a little more complicated when trying to fix an entity | |
8399 | with a dynamic type that directly contains another dynamic type, | |
8400 | such as an array of variant records, for instance. There are | |
8401 | two possible cases: Arrays, and records. | |
8402 | ||
8403 | Arrays are a little simpler to handle, because the same amount of | |
8404 | memory is allocated for each element of the array, even if the amount | |
8405 | of space used by each element changes from element to element. | |
8406 | Consider for instance the following array of type Rec: | |
8407 | ||
8408 | type Rec_Array is array (1 .. 2) of Rec; | |
8409 | ||
8410 | The type structure in GDB describes an array in terms of its | |
8411 | bounds, and the type of its elements. By design, all elements | |
8412 | in the array have the same type. So we cannot use a fixed type | |
8413 | for the array elements in this case, since the fixed type depends | |
8414 | on the actual value of each element. | |
8415 | ||
8416 | Fortunately, what happens in practice is that each element of | |
8417 | the array has the same size, which is the maximum size that | |
8418 | might be needed in order to hold an object of the element type. | |
8419 | And the compiler shows it in the debugging information by wrapping | |
8420 | the array element inside a private PAD type. This type should not | |
8421 | be shown to the user, and must be "unwrap"'ed before printing. Note | |
8422 | that we also use the adjective "aligner" in our code to designate | |
8423 | these wrapper types. | |
8424 | ||
8425 | These wrapper types should have a constant size, which is the size | |
8426 | of each element of the array. In the case when the size is statically | |
8427 | known, the PAD type will already have the right size, and the array | |
8428 | element type should remain unfixed. But there are cases when | |
8429 | this size is not statically known. For instance, assuming that | |
8430 | "Five" is an integer variable: | |
8431 | ||
8432 | type Dynamic is array (1 .. Five) of Integer; | |
8433 | type Wrapper (Has_Length : Boolean := False) is record | |
8434 | Data : Dynamic; | |
8435 | case Has_Length is | |
8436 | when True => Length : Integer; | |
8437 | when False => null; | |
8438 | end case; | |
8439 | end record; | |
8440 | type Wrapper_Array is array (1 .. 2) of Wrapper; | |
8441 | ||
8442 | Hello : Wrapper_Array := (others => (Has_Length => True, | |
8443 | Data => (others => 17), | |
8444 | Length => 1)); | |
8445 | ||
8446 | ||
8447 | The debugging info would describe variable Hello as being an | |
8448 | array of a PAD type. The size of that PAD type is not statically | |
8449 | known, but can be determined using a parallel XVZ variable. | |
8450 | In that case, a copy of the PAD type with the correct size should | |
8451 | be used for the fixed array. | |
8452 | ||
8453 | However, things are slightly different in the case of dynamic | |
8454 | record types. In this case, in order to compute the associated | |
8455 | fixed type, we need to determine the size and offset of each of | |
8456 | its components. This, in turn, requires us to compute the fixed | |
8457 | type of each of these components. | |
8458 | ||
8459 | Consider for instance the example: | |
8460 | ||
8461 | type Bounded_String (Max_Size : Natural) is record | |
8462 | Str : String (1 .. Max_Size); | |
8463 | Length : Natural; | |
8464 | end record; | |
8465 | My_String : Bounded_String (Max_Size => 10); | |
8466 | ||
8467 | In that case, the position of field "Length" depends on the size | |
8468 | of field Str, which itself depends on the value of the Max_Size | |
8469 | discriminant. In order to fix the type of variable My_String, | |
8470 | we need to fix the type of field Str. Therefore, fixing a variant | |
8471 | record requires us to fix each of its components. | |
8472 | ||
8473 | However, if a component does not have a dynamic size, the component | |
8474 | should not be fixed. In particular, fields that use a PAD type | |
8475 | should not fixed. Here is an example where this might happen | |
8476 | (assuming type Rec above): | |
8477 | ||
8478 | type Container (Big : Boolean) is record | |
8479 | First : Rec; | |
8480 | After : Integer; | |
8481 | case Big is | |
8482 | when True => Another : Integer; | |
8483 | when False => null; | |
8484 | end case; | |
8485 | end record; | |
8486 | My_Container : Container := (Big => False, | |
8487 | First => (Empty => True), | |
8488 | After => 42); | |
8489 | ||
8490 | In that example, the compiler creates a PAD type for component First, | |
8491 | whose size is constant, and then positions the component After just | |
8492 | right after it. The offset of component After is therefore constant | |
8493 | in this case. | |
8494 | ||
8495 | The debugger computes the position of each field based on an algorithm | |
8496 | that uses, among other things, the actual position and size of the field | |
8497 | preceding it. Let's now imagine that the user is trying to print the | |
8498 | value of My_Container. If the type fixing was recursive, we would | |
8499 | end up computing the offset of field After based on the size of the | |
8500 | fixed version of field First. And since in our example First has | |
8501 | only one actual field, the size of the fixed type is actually smaller | |
8502 | than the amount of space allocated to that field, and thus we would | |
8503 | compute the wrong offset of field After. | |
8504 | ||
8505 | Unfortunately, we need to watch out for dynamic components of variant | |
8506 | records (identified by the ___XVL suffix in the component name). | |
8507 | Even if the target type is a PAD type, the size of that type might | |
8508 | not be statically known. So the PAD type needs to be unwrapped and | |
8509 | the resulting type needs to be fixed. Otherwise, we might end up | |
8510 | with the wrong size for our component. This can be observed with | |
8511 | the following type declarations: | |
8512 | ||
8513 | type Octal is new Integer range 0 .. 7; | |
8514 | type Octal_Array is array (Positive range <>) of Octal; | |
8515 | pragma Pack (Octal_Array); | |
8516 | ||
8517 | type Octal_Buffer (Size : Positive) is record | |
8518 | Buffer : Octal_Array (1 .. Size); | |
8519 | Length : Integer; | |
8520 | end record; | |
8521 | ||
8522 | In that case, Buffer is a PAD type whose size is unset and needs | |
8523 | to be computed by fixing the unwrapped type. | |
8524 | ||
8525 | Lastly, when should the sub-elements of a type that remained unfixed | |
8526 | thus far, be actually fixed? | |
8527 | ||
8528 | The answer is: Only when referencing that element. For instance | |
8529 | when selecting one component of a record, this specific component | |
8530 | should be fixed at that point in time. Or when printing the value | |
8531 | of a record, each component should be fixed before its value gets | |
8532 | printed. Similarly for arrays, the element of the array should be | |
8533 | fixed when printing each element of the array, or when extracting | |
8534 | one element out of that array. On the other hand, fixing should | |
8535 | not be performed on the elements when taking a slice of an array! | |
8536 | ||
8537 | Note that one of the side-effects of miscomputing the offset and | |
8538 | size of each field is that we end up also miscomputing the size | |
8539 | of the containing type. This can have adverse results when computing | |
8540 | the value of an entity. GDB fetches the value of an entity based | |
8541 | on the size of its type, and thus a wrong size causes GDB to fetch | |
8542 | the wrong amount of memory. In the case where the computed size is | |
8543 | too small, GDB fetches too little data to print the value of our | |
8544 | entiry. Results in this case as unpredicatble, as we usually read | |
8545 | past the buffer containing the data =:-o. */ | |
8546 | ||
8547 | /* Implement the evaluate_exp routine in the exp_descriptor structure | |
8548 | for the Ada language. */ | |
8549 | ||
52ce6436 | 8550 | static struct value * |
ebf56fd3 | 8551 | ada_evaluate_subexp (struct type *expect_type, struct expression *exp, |
4c4b4cd2 | 8552 | int *pos, enum noside noside) |
14f9c5c9 AS |
8553 | { |
8554 | enum exp_opcode op; | |
14f9c5c9 AS |
8555 | int tem, tem2, tem3; |
8556 | int pc; | |
8557 | struct value *arg1 = NULL, *arg2 = NULL, *arg3; | |
8558 | struct type *type; | |
52ce6436 | 8559 | int nargs, oplen; |
d2e4a39e | 8560 | struct value **argvec; |
14f9c5c9 | 8561 | |
d2e4a39e AS |
8562 | pc = *pos; |
8563 | *pos += 1; | |
14f9c5c9 AS |
8564 | op = exp->elts[pc].opcode; |
8565 | ||
d2e4a39e | 8566 | switch (op) |
14f9c5c9 AS |
8567 | { |
8568 | default: | |
8569 | *pos -= 1; | |
6e48bd2c JB |
8570 | arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside); |
8571 | arg1 = unwrap_value (arg1); | |
8572 | ||
8573 | /* If evaluating an OP_DOUBLE and an EXPECT_TYPE was provided, | |
8574 | then we need to perform the conversion manually, because | |
8575 | evaluate_subexp_standard doesn't do it. This conversion is | |
8576 | necessary in Ada because the different kinds of float/fixed | |
8577 | types in Ada have different representations. | |
8578 | ||
8579 | Similarly, we need to perform the conversion from OP_LONG | |
8580 | ourselves. */ | |
8581 | if ((op == OP_DOUBLE || op == OP_LONG) && expect_type != NULL) | |
8582 | arg1 = ada_value_cast (expect_type, arg1, noside); | |
8583 | ||
8584 | return arg1; | |
4c4b4cd2 PH |
8585 | |
8586 | case OP_STRING: | |
8587 | { | |
76a01679 JB |
8588 | struct value *result; |
8589 | *pos -= 1; | |
8590 | result = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
8591 | /* The result type will have code OP_STRING, bashed there from | |
8592 | OP_ARRAY. Bash it back. */ | |
df407dfe AC |
8593 | if (TYPE_CODE (value_type (result)) == TYPE_CODE_STRING) |
8594 | TYPE_CODE (value_type (result)) = TYPE_CODE_ARRAY; | |
76a01679 | 8595 | return result; |
4c4b4cd2 | 8596 | } |
14f9c5c9 AS |
8597 | |
8598 | case UNOP_CAST: | |
8599 | (*pos) += 2; | |
8600 | type = exp->elts[pc + 1].type; | |
8601 | arg1 = evaluate_subexp (type, exp, pos, noside); | |
8602 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 8603 | goto nosideret; |
6e48bd2c | 8604 | arg1 = ada_value_cast (type, arg1, noside); |
14f9c5c9 AS |
8605 | return arg1; |
8606 | ||
4c4b4cd2 PH |
8607 | case UNOP_QUAL: |
8608 | (*pos) += 2; | |
8609 | type = exp->elts[pc + 1].type; | |
8610 | return ada_evaluate_subexp (type, exp, pos, noside); | |
8611 | ||
14f9c5c9 AS |
8612 | case BINOP_ASSIGN: |
8613 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
52ce6436 PH |
8614 | if (exp->elts[*pos].opcode == OP_AGGREGATE) |
8615 | { | |
8616 | arg1 = assign_aggregate (arg1, arg1, exp, pos, noside); | |
8617 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) | |
8618 | return arg1; | |
8619 | return ada_value_assign (arg1, arg1); | |
8620 | } | |
003f3813 JB |
8621 | /* Force the evaluation of the rhs ARG2 to the type of the lhs ARG1, |
8622 | except if the lhs of our assignment is a convenience variable. | |
8623 | In the case of assigning to a convenience variable, the lhs | |
8624 | should be exactly the result of the evaluation of the rhs. */ | |
8625 | type = value_type (arg1); | |
8626 | if (VALUE_LVAL (arg1) == lval_internalvar) | |
8627 | type = NULL; | |
8628 | arg2 = evaluate_subexp (type, exp, pos, noside); | |
14f9c5c9 | 8629 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 | 8630 | return arg1; |
df407dfe AC |
8631 | if (ada_is_fixed_point_type (value_type (arg1))) |
8632 | arg2 = cast_to_fixed (value_type (arg1), arg2); | |
8633 | else if (ada_is_fixed_point_type (value_type (arg2))) | |
76a01679 | 8634 | error |
323e0a4a | 8635 | (_("Fixed-point values must be assigned to fixed-point variables")); |
d2e4a39e | 8636 | else |
df407dfe | 8637 | arg2 = coerce_for_assign (value_type (arg1), arg2); |
4c4b4cd2 | 8638 | return ada_value_assign (arg1, arg2); |
14f9c5c9 AS |
8639 | |
8640 | case BINOP_ADD: | |
8641 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
8642 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
8643 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 8644 | goto nosideret; |
2ac8a782 JB |
8645 | if (TYPE_CODE (value_type (arg1)) == TYPE_CODE_PTR) |
8646 | return (value_from_longest | |
8647 | (value_type (arg1), | |
8648 | value_as_long (arg1) + value_as_long (arg2))); | |
df407dfe AC |
8649 | if ((ada_is_fixed_point_type (value_type (arg1)) |
8650 | || ada_is_fixed_point_type (value_type (arg2))) | |
8651 | && value_type (arg1) != value_type (arg2)) | |
323e0a4a | 8652 | error (_("Operands of fixed-point addition must have the same type")); |
b7789565 JB |
8653 | /* Do the addition, and cast the result to the type of the first |
8654 | argument. We cannot cast the result to a reference type, so if | |
8655 | ARG1 is a reference type, find its underlying type. */ | |
8656 | type = value_type (arg1); | |
8657 | while (TYPE_CODE (type) == TYPE_CODE_REF) | |
8658 | type = TYPE_TARGET_TYPE (type); | |
f44316fa | 8659 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
89eef114 | 8660 | return value_cast (type, value_binop (arg1, arg2, BINOP_ADD)); |
14f9c5c9 AS |
8661 | |
8662 | case BINOP_SUB: | |
8663 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
8664 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
8665 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 8666 | goto nosideret; |
2ac8a782 JB |
8667 | if (TYPE_CODE (value_type (arg1)) == TYPE_CODE_PTR) |
8668 | return (value_from_longest | |
8669 | (value_type (arg1), | |
8670 | value_as_long (arg1) - value_as_long (arg2))); | |
df407dfe AC |
8671 | if ((ada_is_fixed_point_type (value_type (arg1)) |
8672 | || ada_is_fixed_point_type (value_type (arg2))) | |
8673 | && value_type (arg1) != value_type (arg2)) | |
323e0a4a | 8674 | error (_("Operands of fixed-point subtraction must have the same type")); |
b7789565 JB |
8675 | /* Do the substraction, and cast the result to the type of the first |
8676 | argument. We cannot cast the result to a reference type, so if | |
8677 | ARG1 is a reference type, find its underlying type. */ | |
8678 | type = value_type (arg1); | |
8679 | while (TYPE_CODE (type) == TYPE_CODE_REF) | |
8680 | type = TYPE_TARGET_TYPE (type); | |
f44316fa | 8681 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
89eef114 | 8682 | return value_cast (type, value_binop (arg1, arg2, BINOP_SUB)); |
14f9c5c9 AS |
8683 | |
8684 | case BINOP_MUL: | |
8685 | case BINOP_DIV: | |
e1578042 JB |
8686 | case BINOP_REM: |
8687 | case BINOP_MOD: | |
14f9c5c9 AS |
8688 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
8689 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8690 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 8691 | goto nosideret; |
e1578042 | 8692 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
9c2be529 JB |
8693 | { |
8694 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
8695 | return value_zero (value_type (arg1), not_lval); | |
8696 | } | |
14f9c5c9 | 8697 | else |
4c4b4cd2 | 8698 | { |
a53b7a21 | 8699 | type = builtin_type (exp->gdbarch)->builtin_double; |
df407dfe | 8700 | if (ada_is_fixed_point_type (value_type (arg1))) |
a53b7a21 | 8701 | arg1 = cast_from_fixed (type, arg1); |
df407dfe | 8702 | if (ada_is_fixed_point_type (value_type (arg2))) |
a53b7a21 | 8703 | arg2 = cast_from_fixed (type, arg2); |
f44316fa | 8704 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
4c4b4cd2 PH |
8705 | return ada_value_binop (arg1, arg2, op); |
8706 | } | |
8707 | ||
4c4b4cd2 PH |
8708 | case BINOP_EQUAL: |
8709 | case BINOP_NOTEQUAL: | |
14f9c5c9 | 8710 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
df407dfe | 8711 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
14f9c5c9 | 8712 | if (noside == EVAL_SKIP) |
76a01679 | 8713 | goto nosideret; |
4c4b4cd2 | 8714 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 8715 | tem = 0; |
4c4b4cd2 | 8716 | else |
f44316fa UW |
8717 | { |
8718 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
8719 | tem = ada_value_equal (arg1, arg2); | |
8720 | } | |
4c4b4cd2 | 8721 | if (op == BINOP_NOTEQUAL) |
76a01679 | 8722 | tem = !tem; |
fbb06eb1 UW |
8723 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
8724 | return value_from_longest (type, (LONGEST) tem); | |
4c4b4cd2 PH |
8725 | |
8726 | case UNOP_NEG: | |
8727 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8728 | if (noside == EVAL_SKIP) | |
8729 | goto nosideret; | |
df407dfe AC |
8730 | else if (ada_is_fixed_point_type (value_type (arg1))) |
8731 | return value_cast (value_type (arg1), value_neg (arg1)); | |
14f9c5c9 | 8732 | else |
f44316fa UW |
8733 | { |
8734 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); | |
8735 | return value_neg (arg1); | |
8736 | } | |
4c4b4cd2 | 8737 | |
2330c6c6 JB |
8738 | case BINOP_LOGICAL_AND: |
8739 | case BINOP_LOGICAL_OR: | |
8740 | case UNOP_LOGICAL_NOT: | |
000d5124 JB |
8741 | { |
8742 | struct value *val; | |
8743 | ||
8744 | *pos -= 1; | |
8745 | val = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
fbb06eb1 UW |
8746 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
8747 | return value_cast (type, val); | |
000d5124 | 8748 | } |
2330c6c6 JB |
8749 | |
8750 | case BINOP_BITWISE_AND: | |
8751 | case BINOP_BITWISE_IOR: | |
8752 | case BINOP_BITWISE_XOR: | |
000d5124 JB |
8753 | { |
8754 | struct value *val; | |
8755 | ||
8756 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); | |
8757 | *pos = pc; | |
8758 | val = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
8759 | ||
8760 | return value_cast (value_type (arg1), val); | |
8761 | } | |
2330c6c6 | 8762 | |
14f9c5c9 AS |
8763 | case OP_VAR_VALUE: |
8764 | *pos -= 1; | |
6799def4 | 8765 | |
14f9c5c9 | 8766 | if (noside == EVAL_SKIP) |
4c4b4cd2 PH |
8767 | { |
8768 | *pos += 4; | |
8769 | goto nosideret; | |
8770 | } | |
8771 | else if (SYMBOL_DOMAIN (exp->elts[pc + 2].symbol) == UNDEF_DOMAIN) | |
76a01679 JB |
8772 | /* Only encountered when an unresolved symbol occurs in a |
8773 | context other than a function call, in which case, it is | |
52ce6436 | 8774 | invalid. */ |
323e0a4a | 8775 | error (_("Unexpected unresolved symbol, %s, during evaluation"), |
4c4b4cd2 | 8776 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
14f9c5c9 | 8777 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 | 8778 | { |
0c1f74cf JB |
8779 | type = static_unwrap_type (SYMBOL_TYPE (exp->elts[pc + 2].symbol)); |
8780 | if (ada_is_tagged_type (type, 0)) | |
8781 | { | |
8782 | /* Tagged types are a little special in the fact that the real | |
8783 | type is dynamic and can only be determined by inspecting the | |
8784 | object's tag. This means that we need to get the object's | |
8785 | value first (EVAL_NORMAL) and then extract the actual object | |
8786 | type from its tag. | |
8787 | ||
8788 | Note that we cannot skip the final step where we extract | |
8789 | the object type from its tag, because the EVAL_NORMAL phase | |
8790 | results in dynamic components being resolved into fixed ones. | |
8791 | This can cause problems when trying to print the type | |
8792 | description of tagged types whose parent has a dynamic size: | |
8793 | We use the type name of the "_parent" component in order | |
8794 | to print the name of the ancestor type in the type description. | |
8795 | If that component had a dynamic size, the resolution into | |
8796 | a fixed type would result in the loss of that type name, | |
8797 | thus preventing us from printing the name of the ancestor | |
8798 | type in the type description. */ | |
b79819ba JB |
8799 | struct type *actual_type; |
8800 | ||
0c1f74cf | 8801 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_NORMAL); |
b79819ba JB |
8802 | actual_type = type_from_tag (ada_value_tag (arg1)); |
8803 | if (actual_type == NULL) | |
8804 | /* If, for some reason, we were unable to determine | |
8805 | the actual type from the tag, then use the static | |
8806 | approximation that we just computed as a fallback. | |
8807 | This can happen if the debugging information is | |
8808 | incomplete, for instance. */ | |
8809 | actual_type = type; | |
8810 | ||
8811 | return value_zero (actual_type, not_lval); | |
0c1f74cf JB |
8812 | } |
8813 | ||
4c4b4cd2 PH |
8814 | *pos += 4; |
8815 | return value_zero | |
8816 | (to_static_fixed_type | |
8817 | (static_unwrap_type (SYMBOL_TYPE (exp->elts[pc + 2].symbol))), | |
8818 | not_lval); | |
8819 | } | |
d2e4a39e | 8820 | else |
4c4b4cd2 | 8821 | { |
284614f0 JB |
8822 | arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside); |
8823 | arg1 = unwrap_value (arg1); | |
4c4b4cd2 PH |
8824 | return ada_to_fixed_value (arg1); |
8825 | } | |
8826 | ||
8827 | case OP_FUNCALL: | |
8828 | (*pos) += 2; | |
8829 | ||
8830 | /* Allocate arg vector, including space for the function to be | |
8831 | called in argvec[0] and a terminating NULL. */ | |
8832 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
8833 | argvec = | |
8834 | (struct value **) alloca (sizeof (struct value *) * (nargs + 2)); | |
8835 | ||
8836 | if (exp->elts[*pos].opcode == OP_VAR_VALUE | |
76a01679 | 8837 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
323e0a4a | 8838 | error (_("Unexpected unresolved symbol, %s, during evaluation"), |
4c4b4cd2 PH |
8839 | SYMBOL_PRINT_NAME (exp->elts[pc + 5].symbol)); |
8840 | else | |
8841 | { | |
8842 | for (tem = 0; tem <= nargs; tem += 1) | |
8843 | argvec[tem] = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8844 | argvec[tem] = 0; | |
8845 | ||
8846 | if (noside == EVAL_SKIP) | |
8847 | goto nosideret; | |
8848 | } | |
8849 | ||
df407dfe | 8850 | if (ada_is_packed_array_type (desc_base_type (value_type (argvec[0])))) |
4c4b4cd2 | 8851 | argvec[0] = ada_coerce_to_simple_array (argvec[0]); |
284614f0 JB |
8852 | else if (TYPE_CODE (value_type (argvec[0])) == TYPE_CODE_ARRAY |
8853 | && TYPE_FIELD_BITSIZE (value_type (argvec[0]), 0) != 0) | |
8854 | /* This is a packed array that has already been fixed, and | |
8855 | therefore already coerced to a simple array. Nothing further | |
8856 | to do. */ | |
8857 | ; | |
df407dfe AC |
8858 | else if (TYPE_CODE (value_type (argvec[0])) == TYPE_CODE_REF |
8859 | || (TYPE_CODE (value_type (argvec[0])) == TYPE_CODE_ARRAY | |
76a01679 | 8860 | && VALUE_LVAL (argvec[0]) == lval_memory)) |
4c4b4cd2 PH |
8861 | argvec[0] = value_addr (argvec[0]); |
8862 | ||
df407dfe | 8863 | type = ada_check_typedef (value_type (argvec[0])); |
4c4b4cd2 PH |
8864 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
8865 | { | |
61ee279c | 8866 | switch (TYPE_CODE (ada_check_typedef (TYPE_TARGET_TYPE (type)))) |
4c4b4cd2 PH |
8867 | { |
8868 | case TYPE_CODE_FUNC: | |
61ee279c | 8869 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
4c4b4cd2 PH |
8870 | break; |
8871 | case TYPE_CODE_ARRAY: | |
8872 | break; | |
8873 | case TYPE_CODE_STRUCT: | |
8874 | if (noside != EVAL_AVOID_SIDE_EFFECTS) | |
8875 | argvec[0] = ada_value_ind (argvec[0]); | |
61ee279c | 8876 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
4c4b4cd2 PH |
8877 | break; |
8878 | default: | |
323e0a4a | 8879 | error (_("cannot subscript or call something of type `%s'"), |
df407dfe | 8880 | ada_type_name (value_type (argvec[0]))); |
4c4b4cd2 PH |
8881 | break; |
8882 | } | |
8883 | } | |
8884 | ||
8885 | switch (TYPE_CODE (type)) | |
8886 | { | |
8887 | case TYPE_CODE_FUNC: | |
8888 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8889 | return allocate_value (TYPE_TARGET_TYPE (type)); | |
8890 | return call_function_by_hand (argvec[0], nargs, argvec + 1); | |
8891 | case TYPE_CODE_STRUCT: | |
8892 | { | |
8893 | int arity; | |
8894 | ||
4c4b4cd2 PH |
8895 | arity = ada_array_arity (type); |
8896 | type = ada_array_element_type (type, nargs); | |
8897 | if (type == NULL) | |
323e0a4a | 8898 | error (_("cannot subscript or call a record")); |
4c4b4cd2 | 8899 | if (arity != nargs) |
323e0a4a | 8900 | error (_("wrong number of subscripts; expecting %d"), arity); |
4c4b4cd2 | 8901 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
0a07e705 | 8902 | return value_zero (ada_aligned_type (type), lval_memory); |
4c4b4cd2 PH |
8903 | return |
8904 | unwrap_value (ada_value_subscript | |
8905 | (argvec[0], nargs, argvec + 1)); | |
8906 | } | |
8907 | case TYPE_CODE_ARRAY: | |
8908 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8909 | { | |
8910 | type = ada_array_element_type (type, nargs); | |
8911 | if (type == NULL) | |
323e0a4a | 8912 | error (_("element type of array unknown")); |
4c4b4cd2 | 8913 | else |
0a07e705 | 8914 | return value_zero (ada_aligned_type (type), lval_memory); |
4c4b4cd2 PH |
8915 | } |
8916 | return | |
8917 | unwrap_value (ada_value_subscript | |
8918 | (ada_coerce_to_simple_array (argvec[0]), | |
8919 | nargs, argvec + 1)); | |
8920 | case TYPE_CODE_PTR: /* Pointer to array */ | |
8921 | type = to_fixed_array_type (TYPE_TARGET_TYPE (type), NULL, 1); | |
8922 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
8923 | { | |
8924 | type = ada_array_element_type (type, nargs); | |
8925 | if (type == NULL) | |
323e0a4a | 8926 | error (_("element type of array unknown")); |
4c4b4cd2 | 8927 | else |
0a07e705 | 8928 | return value_zero (ada_aligned_type (type), lval_memory); |
4c4b4cd2 PH |
8929 | } |
8930 | return | |
8931 | unwrap_value (ada_value_ptr_subscript (argvec[0], type, | |
8932 | nargs, argvec + 1)); | |
8933 | ||
8934 | default: | |
e1d5a0d2 PH |
8935 | error (_("Attempt to index or call something other than an " |
8936 | "array or function")); | |
4c4b4cd2 PH |
8937 | } |
8938 | ||
8939 | case TERNOP_SLICE: | |
8940 | { | |
8941 | struct value *array = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8942 | struct value *low_bound_val = | |
8943 | evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
714e53ab PH |
8944 | struct value *high_bound_val = |
8945 | evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8946 | LONGEST low_bound; | |
8947 | LONGEST high_bound; | |
994b9211 AC |
8948 | low_bound_val = coerce_ref (low_bound_val); |
8949 | high_bound_val = coerce_ref (high_bound_val); | |
714e53ab PH |
8950 | low_bound = pos_atr (low_bound_val); |
8951 | high_bound = pos_atr (high_bound_val); | |
963a6417 | 8952 | |
4c4b4cd2 PH |
8953 | if (noside == EVAL_SKIP) |
8954 | goto nosideret; | |
8955 | ||
4c4b4cd2 PH |
8956 | /* If this is a reference to an aligner type, then remove all |
8957 | the aligners. */ | |
df407dfe AC |
8958 | if (TYPE_CODE (value_type (array)) == TYPE_CODE_REF |
8959 | && ada_is_aligner_type (TYPE_TARGET_TYPE (value_type (array)))) | |
8960 | TYPE_TARGET_TYPE (value_type (array)) = | |
8961 | ada_aligned_type (TYPE_TARGET_TYPE (value_type (array))); | |
4c4b4cd2 | 8962 | |
df407dfe | 8963 | if (ada_is_packed_array_type (value_type (array))) |
323e0a4a | 8964 | error (_("cannot slice a packed array")); |
4c4b4cd2 PH |
8965 | |
8966 | /* If this is a reference to an array or an array lvalue, | |
8967 | convert to a pointer. */ | |
df407dfe AC |
8968 | if (TYPE_CODE (value_type (array)) == TYPE_CODE_REF |
8969 | || (TYPE_CODE (value_type (array)) == TYPE_CODE_ARRAY | |
4c4b4cd2 PH |
8970 | && VALUE_LVAL (array) == lval_memory)) |
8971 | array = value_addr (array); | |
8972 | ||
1265e4aa | 8973 | if (noside == EVAL_AVOID_SIDE_EFFECTS |
61ee279c | 8974 | && ada_is_array_descriptor_type (ada_check_typedef |
df407dfe | 8975 | (value_type (array)))) |
0b5d8877 | 8976 | return empty_array (ada_type_of_array (array, 0), low_bound); |
4c4b4cd2 PH |
8977 | |
8978 | array = ada_coerce_to_simple_array_ptr (array); | |
8979 | ||
714e53ab PH |
8980 | /* If we have more than one level of pointer indirection, |
8981 | dereference the value until we get only one level. */ | |
df407dfe AC |
8982 | while (TYPE_CODE (value_type (array)) == TYPE_CODE_PTR |
8983 | && (TYPE_CODE (TYPE_TARGET_TYPE (value_type (array))) | |
714e53ab PH |
8984 | == TYPE_CODE_PTR)) |
8985 | array = value_ind (array); | |
8986 | ||
8987 | /* Make sure we really do have an array type before going further, | |
8988 | to avoid a SEGV when trying to get the index type or the target | |
8989 | type later down the road if the debug info generated by | |
8990 | the compiler is incorrect or incomplete. */ | |
df407dfe | 8991 | if (!ada_is_simple_array_type (value_type (array))) |
323e0a4a | 8992 | error (_("cannot take slice of non-array")); |
714e53ab | 8993 | |
df407dfe | 8994 | if (TYPE_CODE (value_type (array)) == TYPE_CODE_PTR) |
4c4b4cd2 | 8995 | { |
0b5d8877 | 8996 | if (high_bound < low_bound || noside == EVAL_AVOID_SIDE_EFFECTS) |
df407dfe | 8997 | return empty_array (TYPE_TARGET_TYPE (value_type (array)), |
4c4b4cd2 PH |
8998 | low_bound); |
8999 | else | |
9000 | { | |
9001 | struct type *arr_type0 = | |
df407dfe | 9002 | to_fixed_array_type (TYPE_TARGET_TYPE (value_type (array)), |
4c4b4cd2 | 9003 | NULL, 1); |
f5938064 JG |
9004 | return ada_value_slice_from_ptr (array, arr_type0, |
9005 | longest_to_int (low_bound), | |
9006 | longest_to_int (high_bound)); | |
4c4b4cd2 PH |
9007 | } |
9008 | } | |
9009 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
9010 | return array; | |
9011 | else if (high_bound < low_bound) | |
df407dfe | 9012 | return empty_array (value_type (array), low_bound); |
4c4b4cd2 | 9013 | else |
529cad9c PH |
9014 | return ada_value_slice (array, longest_to_int (low_bound), |
9015 | longest_to_int (high_bound)); | |
4c4b4cd2 | 9016 | } |
14f9c5c9 | 9017 | |
4c4b4cd2 PH |
9018 | case UNOP_IN_RANGE: |
9019 | (*pos) += 2; | |
9020 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8008e265 | 9021 | type = check_typedef (exp->elts[pc + 1].type); |
14f9c5c9 | 9022 | |
14f9c5c9 | 9023 | if (noside == EVAL_SKIP) |
4c4b4cd2 | 9024 | goto nosideret; |
14f9c5c9 | 9025 | |
4c4b4cd2 PH |
9026 | switch (TYPE_CODE (type)) |
9027 | { | |
9028 | default: | |
e1d5a0d2 PH |
9029 | lim_warning (_("Membership test incompletely implemented; " |
9030 | "always returns true")); | |
fbb06eb1 UW |
9031 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
9032 | return value_from_longest (type, (LONGEST) 1); | |
4c4b4cd2 PH |
9033 | |
9034 | case TYPE_CODE_RANGE: | |
030b4912 UW |
9035 | arg2 = value_from_longest (type, TYPE_LOW_BOUND (type)); |
9036 | arg3 = value_from_longest (type, TYPE_HIGH_BOUND (type)); | |
f44316fa UW |
9037 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
9038 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg3); | |
fbb06eb1 UW |
9039 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
9040 | return | |
9041 | value_from_longest (type, | |
4c4b4cd2 PH |
9042 | (value_less (arg1, arg3) |
9043 | || value_equal (arg1, arg3)) | |
9044 | && (value_less (arg2, arg1) | |
9045 | || value_equal (arg2, arg1))); | |
9046 | } | |
9047 | ||
9048 | case BINOP_IN_BOUNDS: | |
14f9c5c9 | 9049 | (*pos) += 2; |
4c4b4cd2 PH |
9050 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
9051 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
14f9c5c9 | 9052 | |
4c4b4cd2 PH |
9053 | if (noside == EVAL_SKIP) |
9054 | goto nosideret; | |
14f9c5c9 | 9055 | |
4c4b4cd2 | 9056 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
fbb06eb1 UW |
9057 | { |
9058 | type = language_bool_type (exp->language_defn, exp->gdbarch); | |
9059 | return value_zero (type, not_lval); | |
9060 | } | |
14f9c5c9 | 9061 | |
4c4b4cd2 | 9062 | tem = longest_to_int (exp->elts[pc + 1].longconst); |
14f9c5c9 | 9063 | |
1eea4ebd UW |
9064 | type = ada_index_type (value_type (arg2), tem, "range"); |
9065 | if (!type) | |
9066 | type = value_type (arg1); | |
14f9c5c9 | 9067 | |
1eea4ebd UW |
9068 | arg3 = value_from_longest (type, ada_array_bound (arg2, tem, 1)); |
9069 | arg2 = value_from_longest (type, ada_array_bound (arg2, tem, 0)); | |
d2e4a39e | 9070 | |
f44316fa UW |
9071 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
9072 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg3); | |
fbb06eb1 | 9073 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
4c4b4cd2 | 9074 | return |
fbb06eb1 | 9075 | value_from_longest (type, |
4c4b4cd2 PH |
9076 | (value_less (arg1, arg3) |
9077 | || value_equal (arg1, arg3)) | |
9078 | && (value_less (arg2, arg1) | |
9079 | || value_equal (arg2, arg1))); | |
9080 | ||
9081 | case TERNOP_IN_RANGE: | |
9082 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9083 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9084 | arg3 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9085 | ||
9086 | if (noside == EVAL_SKIP) | |
9087 | goto nosideret; | |
9088 | ||
f44316fa UW |
9089 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
9090 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg3); | |
fbb06eb1 | 9091 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
4c4b4cd2 | 9092 | return |
fbb06eb1 | 9093 | value_from_longest (type, |
4c4b4cd2 PH |
9094 | (value_less (arg1, arg3) |
9095 | || value_equal (arg1, arg3)) | |
9096 | && (value_less (arg2, arg1) | |
9097 | || value_equal (arg2, arg1))); | |
9098 | ||
9099 | case OP_ATR_FIRST: | |
9100 | case OP_ATR_LAST: | |
9101 | case OP_ATR_LENGTH: | |
9102 | { | |
76a01679 JB |
9103 | struct type *type_arg; |
9104 | if (exp->elts[*pos].opcode == OP_TYPE) | |
9105 | { | |
9106 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
9107 | arg1 = NULL; | |
5bc23cb3 | 9108 | type_arg = check_typedef (exp->elts[pc + 2].type); |
76a01679 JB |
9109 | } |
9110 | else | |
9111 | { | |
9112 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9113 | type_arg = NULL; | |
9114 | } | |
9115 | ||
9116 | if (exp->elts[*pos].opcode != OP_LONG) | |
323e0a4a | 9117 | error (_("Invalid operand to '%s"), ada_attribute_name (op)); |
76a01679 JB |
9118 | tem = longest_to_int (exp->elts[*pos + 2].longconst); |
9119 | *pos += 4; | |
9120 | ||
9121 | if (noside == EVAL_SKIP) | |
9122 | goto nosideret; | |
9123 | ||
9124 | if (type_arg == NULL) | |
9125 | { | |
9126 | arg1 = ada_coerce_ref (arg1); | |
9127 | ||
df407dfe | 9128 | if (ada_is_packed_array_type (value_type (arg1))) |
76a01679 JB |
9129 | arg1 = ada_coerce_to_simple_array (arg1); |
9130 | ||
1eea4ebd UW |
9131 | type = ada_index_type (value_type (arg1), tem, |
9132 | ada_attribute_name (op)); | |
9133 | if (type == NULL) | |
9134 | type = builtin_type (exp->gdbarch)->builtin_int; | |
76a01679 JB |
9135 | |
9136 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
1eea4ebd | 9137 | return allocate_value (type); |
76a01679 JB |
9138 | |
9139 | switch (op) | |
9140 | { | |
9141 | default: /* Should never happen. */ | |
323e0a4a | 9142 | error (_("unexpected attribute encountered")); |
76a01679 | 9143 | case OP_ATR_FIRST: |
1eea4ebd UW |
9144 | return value_from_longest |
9145 | (type, ada_array_bound (arg1, tem, 0)); | |
76a01679 | 9146 | case OP_ATR_LAST: |
1eea4ebd UW |
9147 | return value_from_longest |
9148 | (type, ada_array_bound (arg1, tem, 1)); | |
76a01679 | 9149 | case OP_ATR_LENGTH: |
1eea4ebd UW |
9150 | return value_from_longest |
9151 | (type, ada_array_length (arg1, tem)); | |
76a01679 JB |
9152 | } |
9153 | } | |
9154 | else if (discrete_type_p (type_arg)) | |
9155 | { | |
9156 | struct type *range_type; | |
9157 | char *name = ada_type_name (type_arg); | |
9158 | range_type = NULL; | |
9159 | if (name != NULL && TYPE_CODE (type_arg) != TYPE_CODE_ENUM) | |
1ce677a4 | 9160 | range_type = to_fixed_range_type (name, NULL, type_arg); |
76a01679 JB |
9161 | if (range_type == NULL) |
9162 | range_type = type_arg; | |
9163 | switch (op) | |
9164 | { | |
9165 | default: | |
323e0a4a | 9166 | error (_("unexpected attribute encountered")); |
76a01679 | 9167 | case OP_ATR_FIRST: |
690cc4eb PH |
9168 | return value_from_longest |
9169 | (range_type, discrete_type_low_bound (range_type)); | |
76a01679 | 9170 | case OP_ATR_LAST: |
690cc4eb PH |
9171 | return value_from_longest |
9172 | (range_type, discrete_type_high_bound (range_type)); | |
76a01679 | 9173 | case OP_ATR_LENGTH: |
323e0a4a | 9174 | error (_("the 'length attribute applies only to array types")); |
76a01679 JB |
9175 | } |
9176 | } | |
9177 | else if (TYPE_CODE (type_arg) == TYPE_CODE_FLT) | |
323e0a4a | 9178 | error (_("unimplemented type attribute")); |
76a01679 JB |
9179 | else |
9180 | { | |
9181 | LONGEST low, high; | |
9182 | ||
9183 | if (ada_is_packed_array_type (type_arg)) | |
9184 | type_arg = decode_packed_array_type (type_arg); | |
9185 | ||
1eea4ebd | 9186 | type = ada_index_type (type_arg, tem, ada_attribute_name (op)); |
76a01679 | 9187 | if (type == NULL) |
1eea4ebd UW |
9188 | type = builtin_type (exp->gdbarch)->builtin_int; |
9189 | ||
76a01679 JB |
9190 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
9191 | return allocate_value (type); | |
9192 | ||
9193 | switch (op) | |
9194 | { | |
9195 | default: | |
323e0a4a | 9196 | error (_("unexpected attribute encountered")); |
76a01679 | 9197 | case OP_ATR_FIRST: |
1eea4ebd | 9198 | low = ada_array_bound_from_type (type_arg, tem, 0); |
76a01679 JB |
9199 | return value_from_longest (type, low); |
9200 | case OP_ATR_LAST: | |
1eea4ebd | 9201 | high = ada_array_bound_from_type (type_arg, tem, 1); |
76a01679 JB |
9202 | return value_from_longest (type, high); |
9203 | case OP_ATR_LENGTH: | |
1eea4ebd UW |
9204 | low = ada_array_bound_from_type (type_arg, tem, 0); |
9205 | high = ada_array_bound_from_type (type_arg, tem, 1); | |
76a01679 JB |
9206 | return value_from_longest (type, high - low + 1); |
9207 | } | |
9208 | } | |
14f9c5c9 AS |
9209 | } |
9210 | ||
4c4b4cd2 PH |
9211 | case OP_ATR_TAG: |
9212 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9213 | if (noside == EVAL_SKIP) | |
76a01679 | 9214 | goto nosideret; |
4c4b4cd2 PH |
9215 | |
9216 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
76a01679 | 9217 | return value_zero (ada_tag_type (arg1), not_lval); |
4c4b4cd2 PH |
9218 | |
9219 | return ada_value_tag (arg1); | |
9220 | ||
9221 | case OP_ATR_MIN: | |
9222 | case OP_ATR_MAX: | |
9223 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 AS |
9224 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
9225 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9226 | if (noside == EVAL_SKIP) | |
76a01679 | 9227 | goto nosideret; |
d2e4a39e | 9228 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
df407dfe | 9229 | return value_zero (value_type (arg1), not_lval); |
14f9c5c9 | 9230 | else |
f44316fa UW |
9231 | { |
9232 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
9233 | return value_binop (arg1, arg2, | |
9234 | op == OP_ATR_MIN ? BINOP_MIN : BINOP_MAX); | |
9235 | } | |
14f9c5c9 | 9236 | |
4c4b4cd2 PH |
9237 | case OP_ATR_MODULUS: |
9238 | { | |
31dedfee | 9239 | struct type *type_arg = check_typedef (exp->elts[pc + 2].type); |
76a01679 | 9240 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); |
4c4b4cd2 | 9241 | |
76a01679 JB |
9242 | if (noside == EVAL_SKIP) |
9243 | goto nosideret; | |
4c4b4cd2 | 9244 | |
76a01679 | 9245 | if (!ada_is_modular_type (type_arg)) |
323e0a4a | 9246 | error (_("'modulus must be applied to modular type")); |
4c4b4cd2 | 9247 | |
76a01679 JB |
9248 | return value_from_longest (TYPE_TARGET_TYPE (type_arg), |
9249 | ada_modulus (type_arg)); | |
4c4b4cd2 PH |
9250 | } |
9251 | ||
9252 | ||
9253 | case OP_ATR_POS: | |
9254 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 AS |
9255 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
9256 | if (noside == EVAL_SKIP) | |
76a01679 | 9257 | goto nosideret; |
3cb382c9 UW |
9258 | type = builtin_type (exp->gdbarch)->builtin_int; |
9259 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
9260 | return value_zero (type, not_lval); | |
14f9c5c9 | 9261 | else |
3cb382c9 | 9262 | return value_pos_atr (type, arg1); |
14f9c5c9 | 9263 | |
4c4b4cd2 PH |
9264 | case OP_ATR_SIZE: |
9265 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8c1c099f JB |
9266 | type = value_type (arg1); |
9267 | ||
9268 | /* If the argument is a reference, then dereference its type, since | |
9269 | the user is really asking for the size of the actual object, | |
9270 | not the size of the pointer. */ | |
9271 | if (TYPE_CODE (type) == TYPE_CODE_REF) | |
9272 | type = TYPE_TARGET_TYPE (type); | |
9273 | ||
4c4b4cd2 | 9274 | if (noside == EVAL_SKIP) |
76a01679 | 9275 | goto nosideret; |
4c4b4cd2 | 9276 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
22601c15 | 9277 | return value_zero (builtin_type (exp->gdbarch)->builtin_int, not_lval); |
4c4b4cd2 | 9278 | else |
22601c15 | 9279 | return value_from_longest (builtin_type (exp->gdbarch)->builtin_int, |
8c1c099f | 9280 | TARGET_CHAR_BIT * TYPE_LENGTH (type)); |
4c4b4cd2 PH |
9281 | |
9282 | case OP_ATR_VAL: | |
9283 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 | 9284 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
4c4b4cd2 | 9285 | type = exp->elts[pc + 2].type; |
14f9c5c9 | 9286 | if (noside == EVAL_SKIP) |
76a01679 | 9287 | goto nosideret; |
4c4b4cd2 | 9288 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 9289 | return value_zero (type, not_lval); |
4c4b4cd2 | 9290 | else |
76a01679 | 9291 | return value_val_atr (type, arg1); |
4c4b4cd2 PH |
9292 | |
9293 | case BINOP_EXP: | |
9294 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9295 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9296 | if (noside == EVAL_SKIP) | |
9297 | goto nosideret; | |
9298 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
df407dfe | 9299 | return value_zero (value_type (arg1), not_lval); |
4c4b4cd2 | 9300 | else |
f44316fa UW |
9301 | { |
9302 | /* For integer exponentiation operations, | |
9303 | only promote the first argument. */ | |
9304 | if (is_integral_type (value_type (arg2))) | |
9305 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); | |
9306 | else | |
9307 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
9308 | ||
9309 | return value_binop (arg1, arg2, op); | |
9310 | } | |
4c4b4cd2 PH |
9311 | |
9312 | case UNOP_PLUS: | |
9313 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9314 | if (noside == EVAL_SKIP) | |
9315 | goto nosideret; | |
9316 | else | |
9317 | return arg1; | |
9318 | ||
9319 | case UNOP_ABS: | |
9320 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9321 | if (noside == EVAL_SKIP) | |
9322 | goto nosideret; | |
f44316fa | 9323 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); |
df407dfe | 9324 | if (value_less (arg1, value_zero (value_type (arg1), not_lval))) |
4c4b4cd2 | 9325 | return value_neg (arg1); |
14f9c5c9 | 9326 | else |
4c4b4cd2 | 9327 | return arg1; |
14f9c5c9 AS |
9328 | |
9329 | case UNOP_IND: | |
6b0d7253 | 9330 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
14f9c5c9 | 9331 | if (noside == EVAL_SKIP) |
4c4b4cd2 | 9332 | goto nosideret; |
df407dfe | 9333 | type = ada_check_typedef (value_type (arg1)); |
14f9c5c9 | 9334 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 PH |
9335 | { |
9336 | if (ada_is_array_descriptor_type (type)) | |
9337 | /* GDB allows dereferencing GNAT array descriptors. */ | |
9338 | { | |
9339 | struct type *arrType = ada_type_of_array (arg1, 0); | |
9340 | if (arrType == NULL) | |
323e0a4a | 9341 | error (_("Attempt to dereference null array pointer.")); |
00a4c844 | 9342 | return value_at_lazy (arrType, 0); |
4c4b4cd2 PH |
9343 | } |
9344 | else if (TYPE_CODE (type) == TYPE_CODE_PTR | |
9345 | || TYPE_CODE (type) == TYPE_CODE_REF | |
9346 | /* In C you can dereference an array to get the 1st elt. */ | |
9347 | || TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
714e53ab PH |
9348 | { |
9349 | type = to_static_fixed_type | |
9350 | (ada_aligned_type | |
9351 | (ada_check_typedef (TYPE_TARGET_TYPE (type)))); | |
9352 | check_size (type); | |
9353 | return value_zero (type, lval_memory); | |
9354 | } | |
4c4b4cd2 | 9355 | else if (TYPE_CODE (type) == TYPE_CODE_INT) |
6b0d7253 JB |
9356 | { |
9357 | /* GDB allows dereferencing an int. */ | |
9358 | if (expect_type == NULL) | |
9359 | return value_zero (builtin_type (exp->gdbarch)->builtin_int, | |
9360 | lval_memory); | |
9361 | else | |
9362 | { | |
9363 | expect_type = | |
9364 | to_static_fixed_type (ada_aligned_type (expect_type)); | |
9365 | return value_zero (expect_type, lval_memory); | |
9366 | } | |
9367 | } | |
4c4b4cd2 | 9368 | else |
323e0a4a | 9369 | error (_("Attempt to take contents of a non-pointer value.")); |
4c4b4cd2 | 9370 | } |
76a01679 | 9371 | arg1 = ada_coerce_ref (arg1); /* FIXME: What is this for?? */ |
df407dfe | 9372 | type = ada_check_typedef (value_type (arg1)); |
d2e4a39e | 9373 | |
96967637 JB |
9374 | if (TYPE_CODE (type) == TYPE_CODE_INT) |
9375 | /* GDB allows dereferencing an int. If we were given | |
9376 | the expect_type, then use that as the target type. | |
9377 | Otherwise, assume that the target type is an int. */ | |
9378 | { | |
9379 | if (expect_type != NULL) | |
9380 | return ada_value_ind (value_cast (lookup_pointer_type (expect_type), | |
9381 | arg1)); | |
9382 | else | |
9383 | return value_at_lazy (builtin_type (exp->gdbarch)->builtin_int, | |
9384 | (CORE_ADDR) value_as_address (arg1)); | |
9385 | } | |
6b0d7253 | 9386 | |
4c4b4cd2 PH |
9387 | if (ada_is_array_descriptor_type (type)) |
9388 | /* GDB allows dereferencing GNAT array descriptors. */ | |
9389 | return ada_coerce_to_simple_array (arg1); | |
14f9c5c9 | 9390 | else |
4c4b4cd2 | 9391 | return ada_value_ind (arg1); |
14f9c5c9 AS |
9392 | |
9393 | case STRUCTOP_STRUCT: | |
9394 | tem = longest_to_int (exp->elts[pc + 1].longconst); | |
9395 | (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); | |
9396 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9397 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 9398 | goto nosideret; |
14f9c5c9 | 9399 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 9400 | { |
df407dfe | 9401 | struct type *type1 = value_type (arg1); |
76a01679 JB |
9402 | if (ada_is_tagged_type (type1, 1)) |
9403 | { | |
9404 | type = ada_lookup_struct_elt_type (type1, | |
9405 | &exp->elts[pc + 2].string, | |
9406 | 1, 1, NULL); | |
9407 | if (type == NULL) | |
9408 | /* In this case, we assume that the field COULD exist | |
9409 | in some extension of the type. Return an object of | |
9410 | "type" void, which will match any formal | |
9411 | (see ada_type_match). */ | |
30b15541 UW |
9412 | return value_zero (builtin_type (exp->gdbarch)->builtin_void, |
9413 | lval_memory); | |
76a01679 JB |
9414 | } |
9415 | else | |
9416 | type = | |
9417 | ada_lookup_struct_elt_type (type1, &exp->elts[pc + 2].string, 1, | |
9418 | 0, NULL); | |
9419 | ||
9420 | return value_zero (ada_aligned_type (type), lval_memory); | |
9421 | } | |
14f9c5c9 | 9422 | else |
284614f0 JB |
9423 | arg1 = ada_value_struct_elt (arg1, &exp->elts[pc + 2].string, 0); |
9424 | arg1 = unwrap_value (arg1); | |
9425 | return ada_to_fixed_value (arg1); | |
9426 | ||
14f9c5c9 | 9427 | case OP_TYPE: |
4c4b4cd2 PH |
9428 | /* The value is not supposed to be used. This is here to make it |
9429 | easier to accommodate expressions that contain types. */ | |
14f9c5c9 AS |
9430 | (*pos) += 2; |
9431 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 9432 | goto nosideret; |
14f9c5c9 | 9433 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
a6cfbe68 | 9434 | return allocate_value (exp->elts[pc + 1].type); |
14f9c5c9 | 9435 | else |
323e0a4a | 9436 | error (_("Attempt to use a type name as an expression")); |
52ce6436 PH |
9437 | |
9438 | case OP_AGGREGATE: | |
9439 | case OP_CHOICES: | |
9440 | case OP_OTHERS: | |
9441 | case OP_DISCRETE_RANGE: | |
9442 | case OP_POSITIONAL: | |
9443 | case OP_NAME: | |
9444 | if (noside == EVAL_NORMAL) | |
9445 | switch (op) | |
9446 | { | |
9447 | case OP_NAME: | |
9448 | error (_("Undefined name, ambiguous name, or renaming used in " | |
e1d5a0d2 | 9449 | "component association: %s."), &exp->elts[pc+2].string); |
52ce6436 PH |
9450 | case OP_AGGREGATE: |
9451 | error (_("Aggregates only allowed on the right of an assignment")); | |
9452 | default: | |
e1d5a0d2 | 9453 | internal_error (__FILE__, __LINE__, _("aggregate apparently mangled")); |
52ce6436 PH |
9454 | } |
9455 | ||
9456 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
9457 | *pos += oplen - 1; | |
9458 | for (tem = 0; tem < nargs; tem += 1) | |
9459 | ada_evaluate_subexp (NULL, exp, pos, noside); | |
9460 | goto nosideret; | |
14f9c5c9 AS |
9461 | } |
9462 | ||
9463 | nosideret: | |
22601c15 | 9464 | return value_from_longest (builtin_type (exp->gdbarch)->builtin_int, 1); |
14f9c5c9 | 9465 | } |
14f9c5c9 | 9466 | \f |
d2e4a39e | 9467 | |
4c4b4cd2 | 9468 | /* Fixed point */ |
14f9c5c9 AS |
9469 | |
9470 | /* If TYPE encodes an Ada fixed-point type, return the suffix of the | |
9471 | type name that encodes the 'small and 'delta information. | |
4c4b4cd2 | 9472 | Otherwise, return NULL. */ |
14f9c5c9 | 9473 | |
d2e4a39e | 9474 | static const char * |
ebf56fd3 | 9475 | fixed_type_info (struct type *type) |
14f9c5c9 | 9476 | { |
d2e4a39e | 9477 | const char *name = ada_type_name (type); |
14f9c5c9 AS |
9478 | enum type_code code = (type == NULL) ? TYPE_CODE_UNDEF : TYPE_CODE (type); |
9479 | ||
d2e4a39e AS |
9480 | if ((code == TYPE_CODE_INT || code == TYPE_CODE_RANGE) && name != NULL) |
9481 | { | |
14f9c5c9 AS |
9482 | const char *tail = strstr (name, "___XF_"); |
9483 | if (tail == NULL) | |
4c4b4cd2 | 9484 | return NULL; |
d2e4a39e | 9485 | else |
4c4b4cd2 | 9486 | return tail + 5; |
14f9c5c9 AS |
9487 | } |
9488 | else if (code == TYPE_CODE_RANGE && TYPE_TARGET_TYPE (type) != type) | |
9489 | return fixed_type_info (TYPE_TARGET_TYPE (type)); | |
9490 | else | |
9491 | return NULL; | |
9492 | } | |
9493 | ||
4c4b4cd2 | 9494 | /* Returns non-zero iff TYPE represents an Ada fixed-point type. */ |
14f9c5c9 AS |
9495 | |
9496 | int | |
ebf56fd3 | 9497 | ada_is_fixed_point_type (struct type *type) |
14f9c5c9 AS |
9498 | { |
9499 | return fixed_type_info (type) != NULL; | |
9500 | } | |
9501 | ||
4c4b4cd2 PH |
9502 | /* Return non-zero iff TYPE represents a System.Address type. */ |
9503 | ||
9504 | int | |
9505 | ada_is_system_address_type (struct type *type) | |
9506 | { | |
9507 | return (TYPE_NAME (type) | |
9508 | && strcmp (TYPE_NAME (type), "system__address") == 0); | |
9509 | } | |
9510 | ||
14f9c5c9 AS |
9511 | /* Assuming that TYPE is the representation of an Ada fixed-point |
9512 | type, return its delta, or -1 if the type is malformed and the | |
4c4b4cd2 | 9513 | delta cannot be determined. */ |
14f9c5c9 AS |
9514 | |
9515 | DOUBLEST | |
ebf56fd3 | 9516 | ada_delta (struct type *type) |
14f9c5c9 AS |
9517 | { |
9518 | const char *encoding = fixed_type_info (type); | |
facc390f | 9519 | DOUBLEST num, den; |
14f9c5c9 | 9520 | |
facc390f JB |
9521 | /* Strictly speaking, num and den are encoded as integer. However, |
9522 | they may not fit into a long, and they will have to be converted | |
9523 | to DOUBLEST anyway. So scan them as DOUBLEST. */ | |
9524 | if (sscanf (encoding, "_%" DOUBLEST_SCAN_FORMAT "_%" DOUBLEST_SCAN_FORMAT, | |
9525 | &num, &den) < 2) | |
14f9c5c9 | 9526 | return -1.0; |
d2e4a39e | 9527 | else |
facc390f | 9528 | return num / den; |
14f9c5c9 AS |
9529 | } |
9530 | ||
9531 | /* Assuming that ada_is_fixed_point_type (TYPE), return the scaling | |
4c4b4cd2 | 9532 | factor ('SMALL value) associated with the type. */ |
14f9c5c9 AS |
9533 | |
9534 | static DOUBLEST | |
ebf56fd3 | 9535 | scaling_factor (struct type *type) |
14f9c5c9 AS |
9536 | { |
9537 | const char *encoding = fixed_type_info (type); | |
facc390f | 9538 | DOUBLEST num0, den0, num1, den1; |
14f9c5c9 | 9539 | int n; |
d2e4a39e | 9540 | |
facc390f JB |
9541 | /* Strictly speaking, num's and den's are encoded as integer. However, |
9542 | they may not fit into a long, and they will have to be converted | |
9543 | to DOUBLEST anyway. So scan them as DOUBLEST. */ | |
9544 | n = sscanf (encoding, | |
9545 | "_%" DOUBLEST_SCAN_FORMAT "_%" DOUBLEST_SCAN_FORMAT | |
9546 | "_%" DOUBLEST_SCAN_FORMAT "_%" DOUBLEST_SCAN_FORMAT, | |
9547 | &num0, &den0, &num1, &den1); | |
14f9c5c9 AS |
9548 | |
9549 | if (n < 2) | |
9550 | return 1.0; | |
9551 | else if (n == 4) | |
facc390f | 9552 | return num1 / den1; |
d2e4a39e | 9553 | else |
facc390f | 9554 | return num0 / den0; |
14f9c5c9 AS |
9555 | } |
9556 | ||
9557 | ||
9558 | /* Assuming that X is the representation of a value of fixed-point | |
4c4b4cd2 | 9559 | type TYPE, return its floating-point equivalent. */ |
14f9c5c9 AS |
9560 | |
9561 | DOUBLEST | |
ebf56fd3 | 9562 | ada_fixed_to_float (struct type *type, LONGEST x) |
14f9c5c9 | 9563 | { |
d2e4a39e | 9564 | return (DOUBLEST) x *scaling_factor (type); |
14f9c5c9 AS |
9565 | } |
9566 | ||
4c4b4cd2 PH |
9567 | /* The representation of a fixed-point value of type TYPE |
9568 | corresponding to the value X. */ | |
14f9c5c9 AS |
9569 | |
9570 | LONGEST | |
ebf56fd3 | 9571 | ada_float_to_fixed (struct type *type, DOUBLEST x) |
14f9c5c9 AS |
9572 | { |
9573 | return (LONGEST) (x / scaling_factor (type) + 0.5); | |
9574 | } | |
9575 | ||
9576 | ||
4c4b4cd2 | 9577 | /* VAX floating formats */ |
14f9c5c9 AS |
9578 | |
9579 | /* Non-zero iff TYPE represents one of the special VAX floating-point | |
4c4b4cd2 PH |
9580 | types. */ |
9581 | ||
14f9c5c9 | 9582 | int |
d2e4a39e | 9583 | ada_is_vax_floating_type (struct type *type) |
14f9c5c9 | 9584 | { |
d2e4a39e | 9585 | int name_len = |
14f9c5c9 | 9586 | (ada_type_name (type) == NULL) ? 0 : strlen (ada_type_name (type)); |
d2e4a39e | 9587 | return |
14f9c5c9 | 9588 | name_len > 6 |
d2e4a39e | 9589 | && (TYPE_CODE (type) == TYPE_CODE_INT |
4c4b4cd2 PH |
9590 | || TYPE_CODE (type) == TYPE_CODE_RANGE) |
9591 | && strncmp (ada_type_name (type) + name_len - 6, "___XF", 5) == 0; | |
14f9c5c9 AS |
9592 | } |
9593 | ||
9594 | /* The type of special VAX floating-point type this is, assuming | |
4c4b4cd2 PH |
9595 | ada_is_vax_floating_point. */ |
9596 | ||
14f9c5c9 | 9597 | int |
d2e4a39e | 9598 | ada_vax_float_type_suffix (struct type *type) |
14f9c5c9 | 9599 | { |
d2e4a39e | 9600 | return ada_type_name (type)[strlen (ada_type_name (type)) - 1]; |
14f9c5c9 AS |
9601 | } |
9602 | ||
4c4b4cd2 | 9603 | /* A value representing the special debugging function that outputs |
14f9c5c9 | 9604 | VAX floating-point values of the type represented by TYPE. Assumes |
4c4b4cd2 PH |
9605 | ada_is_vax_floating_type (TYPE). */ |
9606 | ||
d2e4a39e AS |
9607 | struct value * |
9608 | ada_vax_float_print_function (struct type *type) | |
9609 | { | |
9610 | switch (ada_vax_float_type_suffix (type)) | |
9611 | { | |
9612 | case 'F': | |
9613 | return get_var_value ("DEBUG_STRING_F", 0); | |
9614 | case 'D': | |
9615 | return get_var_value ("DEBUG_STRING_D", 0); | |
9616 | case 'G': | |
9617 | return get_var_value ("DEBUG_STRING_G", 0); | |
9618 | default: | |
323e0a4a | 9619 | error (_("invalid VAX floating-point type")); |
d2e4a39e | 9620 | } |
14f9c5c9 | 9621 | } |
14f9c5c9 | 9622 | \f |
d2e4a39e | 9623 | |
4c4b4cd2 | 9624 | /* Range types */ |
14f9c5c9 AS |
9625 | |
9626 | /* Scan STR beginning at position K for a discriminant name, and | |
9627 | return the value of that discriminant field of DVAL in *PX. If | |
9628 | PNEW_K is not null, put the position of the character beyond the | |
9629 | name scanned in *PNEW_K. Return 1 if successful; return 0 and do | |
4c4b4cd2 | 9630 | not alter *PX and *PNEW_K if unsuccessful. */ |
14f9c5c9 AS |
9631 | |
9632 | static int | |
07d8f827 | 9633 | scan_discrim_bound (char *str, int k, struct value *dval, LONGEST * px, |
76a01679 | 9634 | int *pnew_k) |
14f9c5c9 AS |
9635 | { |
9636 | static char *bound_buffer = NULL; | |
9637 | static size_t bound_buffer_len = 0; | |
9638 | char *bound; | |
9639 | char *pend; | |
d2e4a39e | 9640 | struct value *bound_val; |
14f9c5c9 AS |
9641 | |
9642 | if (dval == NULL || str == NULL || str[k] == '\0') | |
9643 | return 0; | |
9644 | ||
d2e4a39e | 9645 | pend = strstr (str + k, "__"); |
14f9c5c9 AS |
9646 | if (pend == NULL) |
9647 | { | |
d2e4a39e | 9648 | bound = str + k; |
14f9c5c9 AS |
9649 | k += strlen (bound); |
9650 | } | |
d2e4a39e | 9651 | else |
14f9c5c9 | 9652 | { |
d2e4a39e | 9653 | GROW_VECT (bound_buffer, bound_buffer_len, pend - (str + k) + 1); |
14f9c5c9 | 9654 | bound = bound_buffer; |
d2e4a39e AS |
9655 | strncpy (bound_buffer, str + k, pend - (str + k)); |
9656 | bound[pend - (str + k)] = '\0'; | |
9657 | k = pend - str; | |
14f9c5c9 | 9658 | } |
d2e4a39e | 9659 | |
df407dfe | 9660 | bound_val = ada_search_struct_field (bound, dval, 0, value_type (dval)); |
14f9c5c9 AS |
9661 | if (bound_val == NULL) |
9662 | return 0; | |
9663 | ||
9664 | *px = value_as_long (bound_val); | |
9665 | if (pnew_k != NULL) | |
9666 | *pnew_k = k; | |
9667 | return 1; | |
9668 | } | |
9669 | ||
9670 | /* Value of variable named NAME in the current environment. If | |
9671 | no such variable found, then if ERR_MSG is null, returns 0, and | |
4c4b4cd2 PH |
9672 | otherwise causes an error with message ERR_MSG. */ |
9673 | ||
d2e4a39e AS |
9674 | static struct value * |
9675 | get_var_value (char *name, char *err_msg) | |
14f9c5c9 | 9676 | { |
4c4b4cd2 | 9677 | struct ada_symbol_info *syms; |
14f9c5c9 AS |
9678 | int nsyms; |
9679 | ||
4c4b4cd2 PH |
9680 | nsyms = ada_lookup_symbol_list (name, get_selected_block (0), VAR_DOMAIN, |
9681 | &syms); | |
14f9c5c9 AS |
9682 | |
9683 | if (nsyms != 1) | |
9684 | { | |
9685 | if (err_msg == NULL) | |
4c4b4cd2 | 9686 | return 0; |
14f9c5c9 | 9687 | else |
8a3fe4f8 | 9688 | error (("%s"), err_msg); |
14f9c5c9 AS |
9689 | } |
9690 | ||
4c4b4cd2 | 9691 | return value_of_variable (syms[0].sym, syms[0].block); |
14f9c5c9 | 9692 | } |
d2e4a39e | 9693 | |
14f9c5c9 | 9694 | /* Value of integer variable named NAME in the current environment. If |
4c4b4cd2 PH |
9695 | no such variable found, returns 0, and sets *FLAG to 0. If |
9696 | successful, sets *FLAG to 1. */ | |
9697 | ||
14f9c5c9 | 9698 | LONGEST |
4c4b4cd2 | 9699 | get_int_var_value (char *name, int *flag) |
14f9c5c9 | 9700 | { |
4c4b4cd2 | 9701 | struct value *var_val = get_var_value (name, 0); |
d2e4a39e | 9702 | |
14f9c5c9 AS |
9703 | if (var_val == 0) |
9704 | { | |
9705 | if (flag != NULL) | |
4c4b4cd2 | 9706 | *flag = 0; |
14f9c5c9 AS |
9707 | return 0; |
9708 | } | |
9709 | else | |
9710 | { | |
9711 | if (flag != NULL) | |
4c4b4cd2 | 9712 | *flag = 1; |
14f9c5c9 AS |
9713 | return value_as_long (var_val); |
9714 | } | |
9715 | } | |
d2e4a39e | 9716 | |
14f9c5c9 AS |
9717 | |
9718 | /* Return a range type whose base type is that of the range type named | |
9719 | NAME in the current environment, and whose bounds are calculated | |
4c4b4cd2 | 9720 | from NAME according to the GNAT range encoding conventions. |
1ce677a4 UW |
9721 | Extract discriminant values, if needed, from DVAL. ORIG_TYPE is the |
9722 | corresponding range type from debug information; fall back to using it | |
9723 | if symbol lookup fails. If a new type must be created, allocate it | |
9724 | like ORIG_TYPE was. The bounds information, in general, is encoded | |
9725 | in NAME, the base type given in the named range type. */ | |
14f9c5c9 | 9726 | |
d2e4a39e | 9727 | static struct type * |
1ce677a4 | 9728 | to_fixed_range_type (char *name, struct value *dval, struct type *orig_type) |
14f9c5c9 AS |
9729 | { |
9730 | struct type *raw_type = ada_find_any_type (name); | |
9731 | struct type *base_type; | |
d2e4a39e | 9732 | char *subtype_info; |
14f9c5c9 | 9733 | |
1ce677a4 | 9734 | /* Fall back to the original type if symbol lookup failed. */ |
dddfab26 | 9735 | if (raw_type == NULL) |
1ce677a4 | 9736 | raw_type = orig_type; |
dddfab26 | 9737 | |
1ce677a4 | 9738 | if (TYPE_CODE (raw_type) == TYPE_CODE_RANGE) |
14f9c5c9 AS |
9739 | base_type = TYPE_TARGET_TYPE (raw_type); |
9740 | else | |
9741 | base_type = raw_type; | |
9742 | ||
9743 | subtype_info = strstr (name, "___XD"); | |
9744 | if (subtype_info == NULL) | |
690cc4eb PH |
9745 | { |
9746 | LONGEST L = discrete_type_low_bound (raw_type); | |
9747 | LONGEST U = discrete_type_high_bound (raw_type); | |
9748 | if (L < INT_MIN || U > INT_MAX) | |
9749 | return raw_type; | |
9750 | else | |
e9bb382b | 9751 | return create_range_type (alloc_type_copy (orig_type), raw_type, |
690cc4eb PH |
9752 | discrete_type_low_bound (raw_type), |
9753 | discrete_type_high_bound (raw_type)); | |
9754 | } | |
14f9c5c9 AS |
9755 | else |
9756 | { | |
9757 | static char *name_buf = NULL; | |
9758 | static size_t name_len = 0; | |
9759 | int prefix_len = subtype_info - name; | |
9760 | LONGEST L, U; | |
9761 | struct type *type; | |
9762 | char *bounds_str; | |
9763 | int n; | |
9764 | ||
9765 | GROW_VECT (name_buf, name_len, prefix_len + 5); | |
9766 | strncpy (name_buf, name, prefix_len); | |
9767 | name_buf[prefix_len] = '\0'; | |
9768 | ||
9769 | subtype_info += 5; | |
9770 | bounds_str = strchr (subtype_info, '_'); | |
9771 | n = 1; | |
9772 | ||
d2e4a39e | 9773 | if (*subtype_info == 'L') |
4c4b4cd2 PH |
9774 | { |
9775 | if (!ada_scan_number (bounds_str, n, &L, &n) | |
9776 | && !scan_discrim_bound (bounds_str, n, dval, &L, &n)) | |
9777 | return raw_type; | |
9778 | if (bounds_str[n] == '_') | |
9779 | n += 2; | |
9780 | else if (bounds_str[n] == '.') /* FIXME? SGI Workshop kludge. */ | |
9781 | n += 1; | |
9782 | subtype_info += 1; | |
9783 | } | |
d2e4a39e | 9784 | else |
4c4b4cd2 PH |
9785 | { |
9786 | int ok; | |
9787 | strcpy (name_buf + prefix_len, "___L"); | |
9788 | L = get_int_var_value (name_buf, &ok); | |
9789 | if (!ok) | |
9790 | { | |
323e0a4a | 9791 | lim_warning (_("Unknown lower bound, using 1.")); |
4c4b4cd2 PH |
9792 | L = 1; |
9793 | } | |
9794 | } | |
14f9c5c9 | 9795 | |
d2e4a39e | 9796 | if (*subtype_info == 'U') |
4c4b4cd2 PH |
9797 | { |
9798 | if (!ada_scan_number (bounds_str, n, &U, &n) | |
9799 | && !scan_discrim_bound (bounds_str, n, dval, &U, &n)) | |
9800 | return raw_type; | |
9801 | } | |
d2e4a39e | 9802 | else |
4c4b4cd2 PH |
9803 | { |
9804 | int ok; | |
9805 | strcpy (name_buf + prefix_len, "___U"); | |
9806 | U = get_int_var_value (name_buf, &ok); | |
9807 | if (!ok) | |
9808 | { | |
323e0a4a | 9809 | lim_warning (_("Unknown upper bound, using %ld."), (long) L); |
4c4b4cd2 PH |
9810 | U = L; |
9811 | } | |
9812 | } | |
14f9c5c9 | 9813 | |
e9bb382b | 9814 | type = create_range_type (alloc_type_copy (orig_type), base_type, L, U); |
d2e4a39e | 9815 | TYPE_NAME (type) = name; |
14f9c5c9 AS |
9816 | return type; |
9817 | } | |
9818 | } | |
9819 | ||
4c4b4cd2 PH |
9820 | /* True iff NAME is the name of a range type. */ |
9821 | ||
14f9c5c9 | 9822 | int |
d2e4a39e | 9823 | ada_is_range_type_name (const char *name) |
14f9c5c9 AS |
9824 | { |
9825 | return (name != NULL && strstr (name, "___XD")); | |
d2e4a39e | 9826 | } |
14f9c5c9 | 9827 | \f |
d2e4a39e | 9828 | |
4c4b4cd2 PH |
9829 | /* Modular types */ |
9830 | ||
9831 | /* True iff TYPE is an Ada modular type. */ | |
14f9c5c9 | 9832 | |
14f9c5c9 | 9833 | int |
d2e4a39e | 9834 | ada_is_modular_type (struct type *type) |
14f9c5c9 | 9835 | { |
4c4b4cd2 | 9836 | struct type *subranged_type = base_type (type); |
14f9c5c9 AS |
9837 | |
9838 | return (subranged_type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE | |
690cc4eb | 9839 | && TYPE_CODE (subranged_type) == TYPE_CODE_INT |
4c4b4cd2 | 9840 | && TYPE_UNSIGNED (subranged_type)); |
14f9c5c9 AS |
9841 | } |
9842 | ||
0056e4d5 JB |
9843 | /* Try to determine the lower and upper bounds of the given modular type |
9844 | using the type name only. Return non-zero and set L and U as the lower | |
9845 | and upper bounds (respectively) if successful. */ | |
9846 | ||
9847 | int | |
9848 | ada_modulus_from_name (struct type *type, ULONGEST *modulus) | |
9849 | { | |
9850 | char *name = ada_type_name (type); | |
9851 | char *suffix; | |
9852 | int k; | |
9853 | LONGEST U; | |
9854 | ||
9855 | if (name == NULL) | |
9856 | return 0; | |
9857 | ||
9858 | /* Discrete type bounds are encoded using an __XD suffix. In our case, | |
9859 | we are looking for static bounds, which means an __XDLU suffix. | |
9860 | Moreover, we know that the lower bound of modular types is always | |
9861 | zero, so the actual suffix should start with "__XDLU_0__", and | |
9862 | then be followed by the upper bound value. */ | |
9863 | suffix = strstr (name, "__XDLU_0__"); | |
9864 | if (suffix == NULL) | |
9865 | return 0; | |
9866 | k = 10; | |
9867 | if (!ada_scan_number (suffix, k, &U, NULL)) | |
9868 | return 0; | |
9869 | ||
9870 | *modulus = (ULONGEST) U + 1; | |
9871 | return 1; | |
9872 | } | |
9873 | ||
4c4b4cd2 PH |
9874 | /* Assuming ada_is_modular_type (TYPE), the modulus of TYPE. */ |
9875 | ||
61ee279c | 9876 | ULONGEST |
0056e4d5 | 9877 | ada_modulus (struct type *type) |
14f9c5c9 | 9878 | { |
0056e4d5 JB |
9879 | ULONGEST modulus; |
9880 | ||
9881 | /* Normally, the modulus of a modular type is equal to the value of | |
9882 | its upper bound + 1. However, the upper bound is currently stored | |
9883 | as an int, which is not always big enough to hold the actual bound | |
9884 | value. To workaround this, try to take advantage of the encoding | |
9885 | that GNAT uses with with discrete types. To avoid some unnecessary | |
9886 | parsing, we do this only when the size of TYPE is greater than | |
9887 | the size of the field holding the bound. */ | |
9888 | if (TYPE_LENGTH (type) > sizeof (TYPE_HIGH_BOUND (type)) | |
9889 | && ada_modulus_from_name (type, &modulus)) | |
9890 | return modulus; | |
9891 | ||
d37209fd | 9892 | return (ULONGEST) (unsigned int) TYPE_HIGH_BOUND (type) + 1; |
14f9c5c9 | 9893 | } |
d2e4a39e | 9894 | \f |
f7f9143b JB |
9895 | |
9896 | /* Ada exception catchpoint support: | |
9897 | --------------------------------- | |
9898 | ||
9899 | We support 3 kinds of exception catchpoints: | |
9900 | . catchpoints on Ada exceptions | |
9901 | . catchpoints on unhandled Ada exceptions | |
9902 | . catchpoints on failed assertions | |
9903 | ||
9904 | Exceptions raised during failed assertions, or unhandled exceptions | |
9905 | could perfectly be caught with the general catchpoint on Ada exceptions. | |
9906 | However, we can easily differentiate these two special cases, and having | |
9907 | the option to distinguish these two cases from the rest can be useful | |
9908 | to zero-in on certain situations. | |
9909 | ||
9910 | Exception catchpoints are a specialized form of breakpoint, | |
9911 | since they rely on inserting breakpoints inside known routines | |
9912 | of the GNAT runtime. The implementation therefore uses a standard | |
9913 | breakpoint structure of the BP_BREAKPOINT type, but with its own set | |
9914 | of breakpoint_ops. | |
9915 | ||
0259addd JB |
9916 | Support in the runtime for exception catchpoints have been changed |
9917 | a few times already, and these changes affect the implementation | |
9918 | of these catchpoints. In order to be able to support several | |
9919 | variants of the runtime, we use a sniffer that will determine | |
9920 | the runtime variant used by the program being debugged. | |
9921 | ||
f7f9143b JB |
9922 | At this time, we do not support the use of conditions on Ada exception |
9923 | catchpoints. The COND and COND_STRING fields are therefore set | |
9924 | to NULL (most of the time, see below). | |
9925 | ||
9926 | Conditions where EXP_STRING, COND, and COND_STRING are used: | |
9927 | ||
9928 | When a user specifies the name of a specific exception in the case | |
9929 | of catchpoints on Ada exceptions, we store the name of that exception | |
9930 | in the EXP_STRING. We then translate this request into an actual | |
9931 | condition stored in COND_STRING, and then parse it into an expression | |
9932 | stored in COND. */ | |
9933 | ||
9934 | /* The different types of catchpoints that we introduced for catching | |
9935 | Ada exceptions. */ | |
9936 | ||
9937 | enum exception_catchpoint_kind | |
9938 | { | |
9939 | ex_catch_exception, | |
9940 | ex_catch_exception_unhandled, | |
9941 | ex_catch_assert | |
9942 | }; | |
9943 | ||
3d0b0fa3 JB |
9944 | /* Ada's standard exceptions. */ |
9945 | ||
9946 | static char *standard_exc[] = { | |
9947 | "constraint_error", | |
9948 | "program_error", | |
9949 | "storage_error", | |
9950 | "tasking_error" | |
9951 | }; | |
9952 | ||
0259addd JB |
9953 | typedef CORE_ADDR (ada_unhandled_exception_name_addr_ftype) (void); |
9954 | ||
9955 | /* A structure that describes how to support exception catchpoints | |
9956 | for a given executable. */ | |
9957 | ||
9958 | struct exception_support_info | |
9959 | { | |
9960 | /* The name of the symbol to break on in order to insert | |
9961 | a catchpoint on exceptions. */ | |
9962 | const char *catch_exception_sym; | |
9963 | ||
9964 | /* The name of the symbol to break on in order to insert | |
9965 | a catchpoint on unhandled exceptions. */ | |
9966 | const char *catch_exception_unhandled_sym; | |
9967 | ||
9968 | /* The name of the symbol to break on in order to insert | |
9969 | a catchpoint on failed assertions. */ | |
9970 | const char *catch_assert_sym; | |
9971 | ||
9972 | /* Assuming that the inferior just triggered an unhandled exception | |
9973 | catchpoint, this function is responsible for returning the address | |
9974 | in inferior memory where the name of that exception is stored. | |
9975 | Return zero if the address could not be computed. */ | |
9976 | ada_unhandled_exception_name_addr_ftype *unhandled_exception_name_addr; | |
9977 | }; | |
9978 | ||
9979 | static CORE_ADDR ada_unhandled_exception_name_addr (void); | |
9980 | static CORE_ADDR ada_unhandled_exception_name_addr_from_raise (void); | |
9981 | ||
9982 | /* The following exception support info structure describes how to | |
9983 | implement exception catchpoints with the latest version of the | |
9984 | Ada runtime (as of 2007-03-06). */ | |
9985 | ||
9986 | static const struct exception_support_info default_exception_support_info = | |
9987 | { | |
9988 | "__gnat_debug_raise_exception", /* catch_exception_sym */ | |
9989 | "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */ | |
9990 | "__gnat_debug_raise_assert_failure", /* catch_assert_sym */ | |
9991 | ada_unhandled_exception_name_addr | |
9992 | }; | |
9993 | ||
9994 | /* The following exception support info structure describes how to | |
9995 | implement exception catchpoints with a slightly older version | |
9996 | of the Ada runtime. */ | |
9997 | ||
9998 | static const struct exception_support_info exception_support_info_fallback = | |
9999 | { | |
10000 | "__gnat_raise_nodefer_with_msg", /* catch_exception_sym */ | |
10001 | "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */ | |
10002 | "system__assertions__raise_assert_failure", /* catch_assert_sym */ | |
10003 | ada_unhandled_exception_name_addr_from_raise | |
10004 | }; | |
10005 | ||
10006 | /* For each executable, we sniff which exception info structure to use | |
10007 | and cache it in the following global variable. */ | |
10008 | ||
10009 | static const struct exception_support_info *exception_info = NULL; | |
10010 | ||
10011 | /* Inspect the Ada runtime and determine which exception info structure | |
10012 | should be used to provide support for exception catchpoints. | |
10013 | ||
10014 | This function will always set exception_info, or raise an error. */ | |
10015 | ||
10016 | static void | |
10017 | ada_exception_support_info_sniffer (void) | |
10018 | { | |
10019 | struct symbol *sym; | |
10020 | ||
10021 | /* If the exception info is already known, then no need to recompute it. */ | |
10022 | if (exception_info != NULL) | |
10023 | return; | |
10024 | ||
10025 | /* Check the latest (default) exception support info. */ | |
10026 | sym = standard_lookup (default_exception_support_info.catch_exception_sym, | |
10027 | NULL, VAR_DOMAIN); | |
10028 | if (sym != NULL) | |
10029 | { | |
10030 | exception_info = &default_exception_support_info; | |
10031 | return; | |
10032 | } | |
10033 | ||
10034 | /* Try our fallback exception suport info. */ | |
10035 | sym = standard_lookup (exception_support_info_fallback.catch_exception_sym, | |
10036 | NULL, VAR_DOMAIN); | |
10037 | if (sym != NULL) | |
10038 | { | |
10039 | exception_info = &exception_support_info_fallback; | |
10040 | return; | |
10041 | } | |
10042 | ||
10043 | /* Sometimes, it is normal for us to not be able to find the routine | |
10044 | we are looking for. This happens when the program is linked with | |
10045 | the shared version of the GNAT runtime, and the program has not been | |
10046 | started yet. Inform the user of these two possible causes if | |
10047 | applicable. */ | |
10048 | ||
10049 | if (ada_update_initial_language (language_unknown, NULL) != language_ada) | |
10050 | error (_("Unable to insert catchpoint. Is this an Ada main program?")); | |
10051 | ||
10052 | /* If the symbol does not exist, then check that the program is | |
10053 | already started, to make sure that shared libraries have been | |
10054 | loaded. If it is not started, this may mean that the symbol is | |
10055 | in a shared library. */ | |
10056 | ||
10057 | if (ptid_get_pid (inferior_ptid) == 0) | |
10058 | error (_("Unable to insert catchpoint. Try to start the program first.")); | |
10059 | ||
10060 | /* At this point, we know that we are debugging an Ada program and | |
10061 | that the inferior has been started, but we still are not able to | |
10062 | find the run-time symbols. That can mean that we are in | |
10063 | configurable run time mode, or that a-except as been optimized | |
10064 | out by the linker... In any case, at this point it is not worth | |
10065 | supporting this feature. */ | |
10066 | ||
10067 | error (_("Cannot insert catchpoints in this configuration.")); | |
10068 | } | |
10069 | ||
10070 | /* An observer of "executable_changed" events. | |
10071 | Its role is to clear certain cached values that need to be recomputed | |
10072 | each time a new executable is loaded by GDB. */ | |
10073 | ||
10074 | static void | |
781b42b0 | 10075 | ada_executable_changed_observer (void) |
0259addd JB |
10076 | { |
10077 | /* If the executable changed, then it is possible that the Ada runtime | |
10078 | is different. So we need to invalidate the exception support info | |
10079 | cache. */ | |
10080 | exception_info = NULL; | |
10081 | } | |
10082 | ||
f7f9143b JB |
10083 | /* Return the name of the function at PC, NULL if could not find it. |
10084 | This function only checks the debugging information, not the symbol | |
10085 | table. */ | |
10086 | ||
10087 | static char * | |
10088 | function_name_from_pc (CORE_ADDR pc) | |
10089 | { | |
10090 | char *func_name; | |
10091 | ||
10092 | if (!find_pc_partial_function (pc, &func_name, NULL, NULL)) | |
10093 | return NULL; | |
10094 | ||
10095 | return func_name; | |
10096 | } | |
10097 | ||
10098 | /* True iff FRAME is very likely to be that of a function that is | |
10099 | part of the runtime system. This is all very heuristic, but is | |
10100 | intended to be used as advice as to what frames are uninteresting | |
10101 | to most users. */ | |
10102 | ||
10103 | static int | |
10104 | is_known_support_routine (struct frame_info *frame) | |
10105 | { | |
4ed6b5be | 10106 | struct symtab_and_line sal; |
f7f9143b JB |
10107 | char *func_name; |
10108 | int i; | |
f7f9143b | 10109 | |
4ed6b5be JB |
10110 | /* If this code does not have any debugging information (no symtab), |
10111 | This cannot be any user code. */ | |
f7f9143b | 10112 | |
4ed6b5be | 10113 | find_frame_sal (frame, &sal); |
f7f9143b JB |
10114 | if (sal.symtab == NULL) |
10115 | return 1; | |
10116 | ||
4ed6b5be JB |
10117 | /* If there is a symtab, but the associated source file cannot be |
10118 | located, then assume this is not user code: Selecting a frame | |
10119 | for which we cannot display the code would not be very helpful | |
10120 | for the user. This should also take care of case such as VxWorks | |
10121 | where the kernel has some debugging info provided for a few units. */ | |
f7f9143b | 10122 | |
9bbc9174 | 10123 | if (symtab_to_fullname (sal.symtab) == NULL) |
f7f9143b JB |
10124 | return 1; |
10125 | ||
4ed6b5be JB |
10126 | /* Check the unit filename againt the Ada runtime file naming. |
10127 | We also check the name of the objfile against the name of some | |
10128 | known system libraries that sometimes come with debugging info | |
10129 | too. */ | |
10130 | ||
f7f9143b JB |
10131 | for (i = 0; known_runtime_file_name_patterns[i] != NULL; i += 1) |
10132 | { | |
10133 | re_comp (known_runtime_file_name_patterns[i]); | |
10134 | if (re_exec (sal.symtab->filename)) | |
10135 | return 1; | |
4ed6b5be JB |
10136 | if (sal.symtab->objfile != NULL |
10137 | && re_exec (sal.symtab->objfile->name)) | |
10138 | return 1; | |
f7f9143b JB |
10139 | } |
10140 | ||
4ed6b5be | 10141 | /* Check whether the function is a GNAT-generated entity. */ |
f7f9143b | 10142 | |
4ed6b5be | 10143 | func_name = function_name_from_pc (get_frame_address_in_block (frame)); |
f7f9143b JB |
10144 | if (func_name == NULL) |
10145 | return 1; | |
10146 | ||
10147 | for (i = 0; known_auxiliary_function_name_patterns[i] != NULL; i += 1) | |
10148 | { | |
10149 | re_comp (known_auxiliary_function_name_patterns[i]); | |
10150 | if (re_exec (func_name)) | |
10151 | return 1; | |
10152 | } | |
10153 | ||
10154 | return 0; | |
10155 | } | |
10156 | ||
10157 | /* Find the first frame that contains debugging information and that is not | |
10158 | part of the Ada run-time, starting from FI and moving upward. */ | |
10159 | ||
0ef643c8 | 10160 | void |
f7f9143b JB |
10161 | ada_find_printable_frame (struct frame_info *fi) |
10162 | { | |
10163 | for (; fi != NULL; fi = get_prev_frame (fi)) | |
10164 | { | |
10165 | if (!is_known_support_routine (fi)) | |
10166 | { | |
10167 | select_frame (fi); | |
10168 | break; | |
10169 | } | |
10170 | } | |
10171 | ||
10172 | } | |
10173 | ||
10174 | /* Assuming that the inferior just triggered an unhandled exception | |
10175 | catchpoint, return the address in inferior memory where the name | |
10176 | of the exception is stored. | |
10177 | ||
10178 | Return zero if the address could not be computed. */ | |
10179 | ||
10180 | static CORE_ADDR | |
10181 | ada_unhandled_exception_name_addr (void) | |
0259addd JB |
10182 | { |
10183 | return parse_and_eval_address ("e.full_name"); | |
10184 | } | |
10185 | ||
10186 | /* Same as ada_unhandled_exception_name_addr, except that this function | |
10187 | should be used when the inferior uses an older version of the runtime, | |
10188 | where the exception name needs to be extracted from a specific frame | |
10189 | several frames up in the callstack. */ | |
10190 | ||
10191 | static CORE_ADDR | |
10192 | ada_unhandled_exception_name_addr_from_raise (void) | |
f7f9143b JB |
10193 | { |
10194 | int frame_level; | |
10195 | struct frame_info *fi; | |
10196 | ||
10197 | /* To determine the name of this exception, we need to select | |
10198 | the frame corresponding to RAISE_SYM_NAME. This frame is | |
10199 | at least 3 levels up, so we simply skip the first 3 frames | |
10200 | without checking the name of their associated function. */ | |
10201 | fi = get_current_frame (); | |
10202 | for (frame_level = 0; frame_level < 3; frame_level += 1) | |
10203 | if (fi != NULL) | |
10204 | fi = get_prev_frame (fi); | |
10205 | ||
10206 | while (fi != NULL) | |
10207 | { | |
10208 | const char *func_name = | |
10209 | function_name_from_pc (get_frame_address_in_block (fi)); | |
10210 | if (func_name != NULL | |
0259addd | 10211 | && strcmp (func_name, exception_info->catch_exception_sym) == 0) |
f7f9143b JB |
10212 | break; /* We found the frame we were looking for... */ |
10213 | fi = get_prev_frame (fi); | |
10214 | } | |
10215 | ||
10216 | if (fi == NULL) | |
10217 | return 0; | |
10218 | ||
10219 | select_frame (fi); | |
10220 | return parse_and_eval_address ("id.full_name"); | |
10221 | } | |
10222 | ||
10223 | /* Assuming the inferior just triggered an Ada exception catchpoint | |
10224 | (of any type), return the address in inferior memory where the name | |
10225 | of the exception is stored, if applicable. | |
10226 | ||
10227 | Return zero if the address could not be computed, or if not relevant. */ | |
10228 | ||
10229 | static CORE_ADDR | |
10230 | ada_exception_name_addr_1 (enum exception_catchpoint_kind ex, | |
10231 | struct breakpoint *b) | |
10232 | { | |
10233 | switch (ex) | |
10234 | { | |
10235 | case ex_catch_exception: | |
10236 | return (parse_and_eval_address ("e.full_name")); | |
10237 | break; | |
10238 | ||
10239 | case ex_catch_exception_unhandled: | |
0259addd | 10240 | return exception_info->unhandled_exception_name_addr (); |
f7f9143b JB |
10241 | break; |
10242 | ||
10243 | case ex_catch_assert: | |
10244 | return 0; /* Exception name is not relevant in this case. */ | |
10245 | break; | |
10246 | ||
10247 | default: | |
10248 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
10249 | break; | |
10250 | } | |
10251 | ||
10252 | return 0; /* Should never be reached. */ | |
10253 | } | |
10254 | ||
10255 | /* Same as ada_exception_name_addr_1, except that it intercepts and contains | |
10256 | any error that ada_exception_name_addr_1 might cause to be thrown. | |
10257 | When an error is intercepted, a warning with the error message is printed, | |
10258 | and zero is returned. */ | |
10259 | ||
10260 | static CORE_ADDR | |
10261 | ada_exception_name_addr (enum exception_catchpoint_kind ex, | |
10262 | struct breakpoint *b) | |
10263 | { | |
10264 | struct gdb_exception e; | |
10265 | CORE_ADDR result = 0; | |
10266 | ||
10267 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
10268 | { | |
10269 | result = ada_exception_name_addr_1 (ex, b); | |
10270 | } | |
10271 | ||
10272 | if (e.reason < 0) | |
10273 | { | |
10274 | warning (_("failed to get exception name: %s"), e.message); | |
10275 | return 0; | |
10276 | } | |
10277 | ||
10278 | return result; | |
10279 | } | |
10280 | ||
10281 | /* Implement the PRINT_IT method in the breakpoint_ops structure | |
10282 | for all exception catchpoint kinds. */ | |
10283 | ||
10284 | static enum print_stop_action | |
10285 | print_it_exception (enum exception_catchpoint_kind ex, struct breakpoint *b) | |
10286 | { | |
10287 | const CORE_ADDR addr = ada_exception_name_addr (ex, b); | |
10288 | char exception_name[256]; | |
10289 | ||
10290 | if (addr != 0) | |
10291 | { | |
10292 | read_memory (addr, exception_name, sizeof (exception_name) - 1); | |
10293 | exception_name [sizeof (exception_name) - 1] = '\0'; | |
10294 | } | |
10295 | ||
10296 | ada_find_printable_frame (get_current_frame ()); | |
10297 | ||
10298 | annotate_catchpoint (b->number); | |
10299 | switch (ex) | |
10300 | { | |
10301 | case ex_catch_exception: | |
10302 | if (addr != 0) | |
10303 | printf_filtered (_("\nCatchpoint %d, %s at "), | |
10304 | b->number, exception_name); | |
10305 | else | |
10306 | printf_filtered (_("\nCatchpoint %d, exception at "), b->number); | |
10307 | break; | |
10308 | case ex_catch_exception_unhandled: | |
10309 | if (addr != 0) | |
10310 | printf_filtered (_("\nCatchpoint %d, unhandled %s at "), | |
10311 | b->number, exception_name); | |
10312 | else | |
10313 | printf_filtered (_("\nCatchpoint %d, unhandled exception at "), | |
10314 | b->number); | |
10315 | break; | |
10316 | case ex_catch_assert: | |
10317 | printf_filtered (_("\nCatchpoint %d, failed assertion at "), | |
10318 | b->number); | |
10319 | break; | |
10320 | } | |
10321 | ||
10322 | return PRINT_SRC_AND_LOC; | |
10323 | } | |
10324 | ||
10325 | /* Implement the PRINT_ONE method in the breakpoint_ops structure | |
10326 | for all exception catchpoint kinds. */ | |
10327 | ||
10328 | static void | |
10329 | print_one_exception (enum exception_catchpoint_kind ex, | |
a6d9a66e | 10330 | struct breakpoint *b, struct bp_location **last_loc) |
f7f9143b | 10331 | { |
79a45b7d TT |
10332 | struct value_print_options opts; |
10333 | ||
10334 | get_user_print_options (&opts); | |
10335 | if (opts.addressprint) | |
f7f9143b JB |
10336 | { |
10337 | annotate_field (4); | |
5af949e3 | 10338 | ui_out_field_core_addr (uiout, "addr", b->loc->gdbarch, b->loc->address); |
f7f9143b JB |
10339 | } |
10340 | ||
10341 | annotate_field (5); | |
a6d9a66e | 10342 | *last_loc = b->loc; |
f7f9143b JB |
10343 | switch (ex) |
10344 | { | |
10345 | case ex_catch_exception: | |
10346 | if (b->exp_string != NULL) | |
10347 | { | |
10348 | char *msg = xstrprintf (_("`%s' Ada exception"), b->exp_string); | |
10349 | ||
10350 | ui_out_field_string (uiout, "what", msg); | |
10351 | xfree (msg); | |
10352 | } | |
10353 | else | |
10354 | ui_out_field_string (uiout, "what", "all Ada exceptions"); | |
10355 | ||
10356 | break; | |
10357 | ||
10358 | case ex_catch_exception_unhandled: | |
10359 | ui_out_field_string (uiout, "what", "unhandled Ada exceptions"); | |
10360 | break; | |
10361 | ||
10362 | case ex_catch_assert: | |
10363 | ui_out_field_string (uiout, "what", "failed Ada assertions"); | |
10364 | break; | |
10365 | ||
10366 | default: | |
10367 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
10368 | break; | |
10369 | } | |
10370 | } | |
10371 | ||
10372 | /* Implement the PRINT_MENTION method in the breakpoint_ops structure | |
10373 | for all exception catchpoint kinds. */ | |
10374 | ||
10375 | static void | |
10376 | print_mention_exception (enum exception_catchpoint_kind ex, | |
10377 | struct breakpoint *b) | |
10378 | { | |
10379 | switch (ex) | |
10380 | { | |
10381 | case ex_catch_exception: | |
10382 | if (b->exp_string != NULL) | |
10383 | printf_filtered (_("Catchpoint %d: `%s' Ada exception"), | |
10384 | b->number, b->exp_string); | |
10385 | else | |
10386 | printf_filtered (_("Catchpoint %d: all Ada exceptions"), b->number); | |
10387 | ||
10388 | break; | |
10389 | ||
10390 | case ex_catch_exception_unhandled: | |
10391 | printf_filtered (_("Catchpoint %d: unhandled Ada exceptions"), | |
10392 | b->number); | |
10393 | break; | |
10394 | ||
10395 | case ex_catch_assert: | |
10396 | printf_filtered (_("Catchpoint %d: failed Ada assertions"), b->number); | |
10397 | break; | |
10398 | ||
10399 | default: | |
10400 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
10401 | break; | |
10402 | } | |
10403 | } | |
10404 | ||
10405 | /* Virtual table for "catch exception" breakpoints. */ | |
10406 | ||
10407 | static enum print_stop_action | |
10408 | print_it_catch_exception (struct breakpoint *b) | |
10409 | { | |
10410 | return print_it_exception (ex_catch_exception, b); | |
10411 | } | |
10412 | ||
10413 | static void | |
a6d9a66e | 10414 | print_one_catch_exception (struct breakpoint *b, struct bp_location **last_loc) |
f7f9143b | 10415 | { |
a6d9a66e | 10416 | print_one_exception (ex_catch_exception, b, last_loc); |
f7f9143b JB |
10417 | } |
10418 | ||
10419 | static void | |
10420 | print_mention_catch_exception (struct breakpoint *b) | |
10421 | { | |
10422 | print_mention_exception (ex_catch_exception, b); | |
10423 | } | |
10424 | ||
10425 | static struct breakpoint_ops catch_exception_breakpoint_ops = | |
10426 | { | |
ce78b96d JB |
10427 | NULL, /* insert */ |
10428 | NULL, /* remove */ | |
10429 | NULL, /* breakpoint_hit */ | |
f7f9143b JB |
10430 | print_it_catch_exception, |
10431 | print_one_catch_exception, | |
10432 | print_mention_catch_exception | |
10433 | }; | |
10434 | ||
10435 | /* Virtual table for "catch exception unhandled" breakpoints. */ | |
10436 | ||
10437 | static enum print_stop_action | |
10438 | print_it_catch_exception_unhandled (struct breakpoint *b) | |
10439 | { | |
10440 | return print_it_exception (ex_catch_exception_unhandled, b); | |
10441 | } | |
10442 | ||
10443 | static void | |
a6d9a66e UW |
10444 | print_one_catch_exception_unhandled (struct breakpoint *b, |
10445 | struct bp_location **last_loc) | |
f7f9143b | 10446 | { |
a6d9a66e | 10447 | print_one_exception (ex_catch_exception_unhandled, b, last_loc); |
f7f9143b JB |
10448 | } |
10449 | ||
10450 | static void | |
10451 | print_mention_catch_exception_unhandled (struct breakpoint *b) | |
10452 | { | |
10453 | print_mention_exception (ex_catch_exception_unhandled, b); | |
10454 | } | |
10455 | ||
10456 | static struct breakpoint_ops catch_exception_unhandled_breakpoint_ops = { | |
ce78b96d JB |
10457 | NULL, /* insert */ |
10458 | NULL, /* remove */ | |
10459 | NULL, /* breakpoint_hit */ | |
f7f9143b JB |
10460 | print_it_catch_exception_unhandled, |
10461 | print_one_catch_exception_unhandled, | |
10462 | print_mention_catch_exception_unhandled | |
10463 | }; | |
10464 | ||
10465 | /* Virtual table for "catch assert" breakpoints. */ | |
10466 | ||
10467 | static enum print_stop_action | |
10468 | print_it_catch_assert (struct breakpoint *b) | |
10469 | { | |
10470 | return print_it_exception (ex_catch_assert, b); | |
10471 | } | |
10472 | ||
10473 | static void | |
a6d9a66e | 10474 | print_one_catch_assert (struct breakpoint *b, struct bp_location **last_loc) |
f7f9143b | 10475 | { |
a6d9a66e | 10476 | print_one_exception (ex_catch_assert, b, last_loc); |
f7f9143b JB |
10477 | } |
10478 | ||
10479 | static void | |
10480 | print_mention_catch_assert (struct breakpoint *b) | |
10481 | { | |
10482 | print_mention_exception (ex_catch_assert, b); | |
10483 | } | |
10484 | ||
10485 | static struct breakpoint_ops catch_assert_breakpoint_ops = { | |
ce78b96d JB |
10486 | NULL, /* insert */ |
10487 | NULL, /* remove */ | |
10488 | NULL, /* breakpoint_hit */ | |
f7f9143b JB |
10489 | print_it_catch_assert, |
10490 | print_one_catch_assert, | |
10491 | print_mention_catch_assert | |
10492 | }; | |
10493 | ||
10494 | /* Return non-zero if B is an Ada exception catchpoint. */ | |
10495 | ||
10496 | int | |
10497 | ada_exception_catchpoint_p (struct breakpoint *b) | |
10498 | { | |
10499 | return (b->ops == &catch_exception_breakpoint_ops | |
10500 | || b->ops == &catch_exception_unhandled_breakpoint_ops | |
10501 | || b->ops == &catch_assert_breakpoint_ops); | |
10502 | } | |
10503 | ||
f7f9143b JB |
10504 | /* Return a newly allocated copy of the first space-separated token |
10505 | in ARGSP, and then adjust ARGSP to point immediately after that | |
10506 | token. | |
10507 | ||
10508 | Return NULL if ARGPS does not contain any more tokens. */ | |
10509 | ||
10510 | static char * | |
10511 | ada_get_next_arg (char **argsp) | |
10512 | { | |
10513 | char *args = *argsp; | |
10514 | char *end; | |
10515 | char *result; | |
10516 | ||
10517 | /* Skip any leading white space. */ | |
10518 | ||
10519 | while (isspace (*args)) | |
10520 | args++; | |
10521 | ||
10522 | if (args[0] == '\0') | |
10523 | return NULL; /* No more arguments. */ | |
10524 | ||
10525 | /* Find the end of the current argument. */ | |
10526 | ||
10527 | end = args; | |
10528 | while (*end != '\0' && !isspace (*end)) | |
10529 | end++; | |
10530 | ||
10531 | /* Adjust ARGSP to point to the start of the next argument. */ | |
10532 | ||
10533 | *argsp = end; | |
10534 | ||
10535 | /* Make a copy of the current argument and return it. */ | |
10536 | ||
10537 | result = xmalloc (end - args + 1); | |
10538 | strncpy (result, args, end - args); | |
10539 | result[end - args] = '\0'; | |
10540 | ||
10541 | return result; | |
10542 | } | |
10543 | ||
10544 | /* Split the arguments specified in a "catch exception" command. | |
10545 | Set EX to the appropriate catchpoint type. | |
10546 | Set EXP_STRING to the name of the specific exception if | |
10547 | specified by the user. */ | |
10548 | ||
10549 | static void | |
10550 | catch_ada_exception_command_split (char *args, | |
10551 | enum exception_catchpoint_kind *ex, | |
10552 | char **exp_string) | |
10553 | { | |
10554 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); | |
10555 | char *exception_name; | |
10556 | ||
10557 | exception_name = ada_get_next_arg (&args); | |
10558 | make_cleanup (xfree, exception_name); | |
10559 | ||
10560 | /* Check that we do not have any more arguments. Anything else | |
10561 | is unexpected. */ | |
10562 | ||
10563 | while (isspace (*args)) | |
10564 | args++; | |
10565 | ||
10566 | if (args[0] != '\0') | |
10567 | error (_("Junk at end of expression")); | |
10568 | ||
10569 | discard_cleanups (old_chain); | |
10570 | ||
10571 | if (exception_name == NULL) | |
10572 | { | |
10573 | /* Catch all exceptions. */ | |
10574 | *ex = ex_catch_exception; | |
10575 | *exp_string = NULL; | |
10576 | } | |
10577 | else if (strcmp (exception_name, "unhandled") == 0) | |
10578 | { | |
10579 | /* Catch unhandled exceptions. */ | |
10580 | *ex = ex_catch_exception_unhandled; | |
10581 | *exp_string = NULL; | |
10582 | } | |
10583 | else | |
10584 | { | |
10585 | /* Catch a specific exception. */ | |
10586 | *ex = ex_catch_exception; | |
10587 | *exp_string = exception_name; | |
10588 | } | |
10589 | } | |
10590 | ||
10591 | /* Return the name of the symbol on which we should break in order to | |
10592 | implement a catchpoint of the EX kind. */ | |
10593 | ||
10594 | static const char * | |
10595 | ada_exception_sym_name (enum exception_catchpoint_kind ex) | |
10596 | { | |
0259addd JB |
10597 | gdb_assert (exception_info != NULL); |
10598 | ||
f7f9143b JB |
10599 | switch (ex) |
10600 | { | |
10601 | case ex_catch_exception: | |
0259addd | 10602 | return (exception_info->catch_exception_sym); |
f7f9143b JB |
10603 | break; |
10604 | case ex_catch_exception_unhandled: | |
0259addd | 10605 | return (exception_info->catch_exception_unhandled_sym); |
f7f9143b JB |
10606 | break; |
10607 | case ex_catch_assert: | |
0259addd | 10608 | return (exception_info->catch_assert_sym); |
f7f9143b JB |
10609 | break; |
10610 | default: | |
10611 | internal_error (__FILE__, __LINE__, | |
10612 | _("unexpected catchpoint kind (%d)"), ex); | |
10613 | } | |
10614 | } | |
10615 | ||
10616 | /* Return the breakpoint ops "virtual table" used for catchpoints | |
10617 | of the EX kind. */ | |
10618 | ||
10619 | static struct breakpoint_ops * | |
4b9eee8c | 10620 | ada_exception_breakpoint_ops (enum exception_catchpoint_kind ex) |
f7f9143b JB |
10621 | { |
10622 | switch (ex) | |
10623 | { | |
10624 | case ex_catch_exception: | |
10625 | return (&catch_exception_breakpoint_ops); | |
10626 | break; | |
10627 | case ex_catch_exception_unhandled: | |
10628 | return (&catch_exception_unhandled_breakpoint_ops); | |
10629 | break; | |
10630 | case ex_catch_assert: | |
10631 | return (&catch_assert_breakpoint_ops); | |
10632 | break; | |
10633 | default: | |
10634 | internal_error (__FILE__, __LINE__, | |
10635 | _("unexpected catchpoint kind (%d)"), ex); | |
10636 | } | |
10637 | } | |
10638 | ||
10639 | /* Return the condition that will be used to match the current exception | |
10640 | being raised with the exception that the user wants to catch. This | |
10641 | assumes that this condition is used when the inferior just triggered | |
10642 | an exception catchpoint. | |
10643 | ||
10644 | The string returned is a newly allocated string that needs to be | |
10645 | deallocated later. */ | |
10646 | ||
10647 | static char * | |
10648 | ada_exception_catchpoint_cond_string (const char *exp_string) | |
10649 | { | |
3d0b0fa3 JB |
10650 | int i; |
10651 | ||
10652 | /* The standard exceptions are a special case. They are defined in | |
10653 | runtime units that have been compiled without debugging info; if | |
10654 | EXP_STRING is the not-fully-qualified name of a standard | |
10655 | exception (e.g. "constraint_error") then, during the evaluation | |
10656 | of the condition expression, the symbol lookup on this name would | |
10657 | *not* return this standard exception. The catchpoint condition | |
10658 | may then be set only on user-defined exceptions which have the | |
10659 | same not-fully-qualified name (e.g. my_package.constraint_error). | |
10660 | ||
10661 | To avoid this unexcepted behavior, these standard exceptions are | |
10662 | systematically prefixed by "standard". This means that "catch | |
10663 | exception constraint_error" is rewritten into "catch exception | |
10664 | standard.constraint_error". | |
10665 | ||
10666 | If an exception named contraint_error is defined in another package of | |
10667 | the inferior program, then the only way to specify this exception as a | |
10668 | breakpoint condition is to use its fully-qualified named: | |
10669 | e.g. my_package.constraint_error. */ | |
10670 | ||
10671 | for (i = 0; i < sizeof (standard_exc) / sizeof (char *); i++) | |
10672 | { | |
10673 | if (strcmp (standard_exc [i], exp_string) == 0) | |
10674 | { | |
10675 | return xstrprintf ("long_integer (e) = long_integer (&standard.%s)", | |
10676 | exp_string); | |
10677 | } | |
10678 | } | |
f7f9143b JB |
10679 | return xstrprintf ("long_integer (e) = long_integer (&%s)", exp_string); |
10680 | } | |
10681 | ||
10682 | /* Return the expression corresponding to COND_STRING evaluated at SAL. */ | |
10683 | ||
10684 | static struct expression * | |
10685 | ada_parse_catchpoint_condition (char *cond_string, | |
10686 | struct symtab_and_line sal) | |
10687 | { | |
10688 | return (parse_exp_1 (&cond_string, block_for_pc (sal.pc), 0)); | |
10689 | } | |
10690 | ||
10691 | /* Return the symtab_and_line that should be used to insert an exception | |
10692 | catchpoint of the TYPE kind. | |
10693 | ||
10694 | EX_STRING should contain the name of a specific exception | |
10695 | that the catchpoint should catch, or NULL otherwise. | |
10696 | ||
10697 | The idea behind all the remaining parameters is that their names match | |
10698 | the name of certain fields in the breakpoint structure that are used to | |
10699 | handle exception catchpoints. This function returns the value to which | |
10700 | these fields should be set, depending on the type of catchpoint we need | |
10701 | to create. | |
10702 | ||
10703 | If COND and COND_STRING are both non-NULL, any value they might | |
10704 | hold will be free'ed, and then replaced by newly allocated ones. | |
10705 | These parameters are left untouched otherwise. */ | |
10706 | ||
10707 | static struct symtab_and_line | |
10708 | ada_exception_sal (enum exception_catchpoint_kind ex, char *exp_string, | |
10709 | char **addr_string, char **cond_string, | |
10710 | struct expression **cond, struct breakpoint_ops **ops) | |
10711 | { | |
10712 | const char *sym_name; | |
10713 | struct symbol *sym; | |
10714 | struct symtab_and_line sal; | |
10715 | ||
0259addd JB |
10716 | /* First, find out which exception support info to use. */ |
10717 | ada_exception_support_info_sniffer (); | |
10718 | ||
10719 | /* Then lookup the function on which we will break in order to catch | |
f7f9143b JB |
10720 | the Ada exceptions requested by the user. */ |
10721 | ||
10722 | sym_name = ada_exception_sym_name (ex); | |
10723 | sym = standard_lookup (sym_name, NULL, VAR_DOMAIN); | |
10724 | ||
10725 | /* The symbol we're looking up is provided by a unit in the GNAT runtime | |
10726 | that should be compiled with debugging information. As a result, we | |
10727 | expect to find that symbol in the symtabs. If we don't find it, then | |
10728 | the target most likely does not support Ada exceptions, or we cannot | |
10729 | insert exception breakpoints yet, because the GNAT runtime hasn't been | |
10730 | loaded yet. */ | |
10731 | ||
10732 | /* brobecker/2006-12-26: It is conceivable that the runtime was compiled | |
10733 | in such a way that no debugging information is produced for the symbol | |
10734 | we are looking for. In this case, we could search the minimal symbols | |
10735 | as a fall-back mechanism. This would still be operating in degraded | |
10736 | mode, however, as we would still be missing the debugging information | |
10737 | that is needed in order to extract the name of the exception being | |
10738 | raised (this name is printed in the catchpoint message, and is also | |
10739 | used when trying to catch a specific exception). We do not handle | |
10740 | this case for now. */ | |
10741 | ||
10742 | if (sym == NULL) | |
0259addd | 10743 | error (_("Unable to break on '%s' in this configuration."), sym_name); |
f7f9143b JB |
10744 | |
10745 | /* Make sure that the symbol we found corresponds to a function. */ | |
10746 | if (SYMBOL_CLASS (sym) != LOC_BLOCK) | |
10747 | error (_("Symbol \"%s\" is not a function (class = %d)"), | |
10748 | sym_name, SYMBOL_CLASS (sym)); | |
10749 | ||
10750 | sal = find_function_start_sal (sym, 1); | |
10751 | ||
10752 | /* Set ADDR_STRING. */ | |
10753 | ||
10754 | *addr_string = xstrdup (sym_name); | |
10755 | ||
10756 | /* Set the COND and COND_STRING (if not NULL). */ | |
10757 | ||
10758 | if (cond_string != NULL && cond != NULL) | |
10759 | { | |
10760 | if (*cond_string != NULL) | |
10761 | { | |
10762 | xfree (*cond_string); | |
10763 | *cond_string = NULL; | |
10764 | } | |
10765 | if (*cond != NULL) | |
10766 | { | |
10767 | xfree (*cond); | |
10768 | *cond = NULL; | |
10769 | } | |
10770 | if (exp_string != NULL) | |
10771 | { | |
10772 | *cond_string = ada_exception_catchpoint_cond_string (exp_string); | |
10773 | *cond = ada_parse_catchpoint_condition (*cond_string, sal); | |
10774 | } | |
10775 | } | |
10776 | ||
10777 | /* Set OPS. */ | |
4b9eee8c | 10778 | *ops = ada_exception_breakpoint_ops (ex); |
f7f9143b JB |
10779 | |
10780 | return sal; | |
10781 | } | |
10782 | ||
10783 | /* Parse the arguments (ARGS) of the "catch exception" command. | |
10784 | ||
10785 | Set TYPE to the appropriate exception catchpoint type. | |
10786 | If the user asked the catchpoint to catch only a specific | |
10787 | exception, then save the exception name in ADDR_STRING. | |
10788 | ||
10789 | See ada_exception_sal for a description of all the remaining | |
10790 | function arguments of this function. */ | |
10791 | ||
10792 | struct symtab_and_line | |
10793 | ada_decode_exception_location (char *args, char **addr_string, | |
10794 | char **exp_string, char **cond_string, | |
10795 | struct expression **cond, | |
10796 | struct breakpoint_ops **ops) | |
10797 | { | |
10798 | enum exception_catchpoint_kind ex; | |
10799 | ||
10800 | catch_ada_exception_command_split (args, &ex, exp_string); | |
10801 | return ada_exception_sal (ex, *exp_string, addr_string, cond_string, | |
10802 | cond, ops); | |
10803 | } | |
10804 | ||
10805 | struct symtab_and_line | |
10806 | ada_decode_assert_location (char *args, char **addr_string, | |
10807 | struct breakpoint_ops **ops) | |
10808 | { | |
10809 | /* Check that no argument where provided at the end of the command. */ | |
10810 | ||
10811 | if (args != NULL) | |
10812 | { | |
10813 | while (isspace (*args)) | |
10814 | args++; | |
10815 | if (*args != '\0') | |
10816 | error (_("Junk at end of arguments.")); | |
10817 | } | |
10818 | ||
10819 | return ada_exception_sal (ex_catch_assert, NULL, addr_string, NULL, NULL, | |
10820 | ops); | |
10821 | } | |
10822 | ||
4c4b4cd2 PH |
10823 | /* Operators */ |
10824 | /* Information about operators given special treatment in functions | |
10825 | below. */ | |
10826 | /* Format: OP_DEFN (<operator>, <operator length>, <# args>, <binop>). */ | |
10827 | ||
10828 | #define ADA_OPERATORS \ | |
10829 | OP_DEFN (OP_VAR_VALUE, 4, 0, 0) \ | |
10830 | OP_DEFN (BINOP_IN_BOUNDS, 3, 2, 0) \ | |
10831 | OP_DEFN (TERNOP_IN_RANGE, 1, 3, 0) \ | |
10832 | OP_DEFN (OP_ATR_FIRST, 1, 2, 0) \ | |
10833 | OP_DEFN (OP_ATR_LAST, 1, 2, 0) \ | |
10834 | OP_DEFN (OP_ATR_LENGTH, 1, 2, 0) \ | |
10835 | OP_DEFN (OP_ATR_IMAGE, 1, 2, 0) \ | |
10836 | OP_DEFN (OP_ATR_MAX, 1, 3, 0) \ | |
10837 | OP_DEFN (OP_ATR_MIN, 1, 3, 0) \ | |
10838 | OP_DEFN (OP_ATR_MODULUS, 1, 1, 0) \ | |
10839 | OP_DEFN (OP_ATR_POS, 1, 2, 0) \ | |
10840 | OP_DEFN (OP_ATR_SIZE, 1, 1, 0) \ | |
10841 | OP_DEFN (OP_ATR_TAG, 1, 1, 0) \ | |
10842 | OP_DEFN (OP_ATR_VAL, 1, 2, 0) \ | |
10843 | OP_DEFN (UNOP_QUAL, 3, 1, 0) \ | |
52ce6436 PH |
10844 | OP_DEFN (UNOP_IN_RANGE, 3, 1, 0) \ |
10845 | OP_DEFN (OP_OTHERS, 1, 1, 0) \ | |
10846 | OP_DEFN (OP_POSITIONAL, 3, 1, 0) \ | |
10847 | OP_DEFN (OP_DISCRETE_RANGE, 1, 2, 0) | |
4c4b4cd2 PH |
10848 | |
10849 | static void | |
10850 | ada_operator_length (struct expression *exp, int pc, int *oplenp, int *argsp) | |
10851 | { | |
10852 | switch (exp->elts[pc - 1].opcode) | |
10853 | { | |
76a01679 | 10854 | default: |
4c4b4cd2 PH |
10855 | operator_length_standard (exp, pc, oplenp, argsp); |
10856 | break; | |
10857 | ||
10858 | #define OP_DEFN(op, len, args, binop) \ | |
10859 | case op: *oplenp = len; *argsp = args; break; | |
10860 | ADA_OPERATORS; | |
10861 | #undef OP_DEFN | |
52ce6436 PH |
10862 | |
10863 | case OP_AGGREGATE: | |
10864 | *oplenp = 3; | |
10865 | *argsp = longest_to_int (exp->elts[pc - 2].longconst); | |
10866 | break; | |
10867 | ||
10868 | case OP_CHOICES: | |
10869 | *oplenp = 3; | |
10870 | *argsp = longest_to_int (exp->elts[pc - 2].longconst) + 1; | |
10871 | break; | |
4c4b4cd2 PH |
10872 | } |
10873 | } | |
10874 | ||
10875 | static char * | |
10876 | ada_op_name (enum exp_opcode opcode) | |
10877 | { | |
10878 | switch (opcode) | |
10879 | { | |
76a01679 | 10880 | default: |
4c4b4cd2 | 10881 | return op_name_standard (opcode); |
52ce6436 | 10882 | |
4c4b4cd2 PH |
10883 | #define OP_DEFN(op, len, args, binop) case op: return #op; |
10884 | ADA_OPERATORS; | |
10885 | #undef OP_DEFN | |
52ce6436 PH |
10886 | |
10887 | case OP_AGGREGATE: | |
10888 | return "OP_AGGREGATE"; | |
10889 | case OP_CHOICES: | |
10890 | return "OP_CHOICES"; | |
10891 | case OP_NAME: | |
10892 | return "OP_NAME"; | |
4c4b4cd2 PH |
10893 | } |
10894 | } | |
10895 | ||
10896 | /* As for operator_length, but assumes PC is pointing at the first | |
10897 | element of the operator, and gives meaningful results only for the | |
52ce6436 | 10898 | Ada-specific operators, returning 0 for *OPLENP and *ARGSP otherwise. */ |
4c4b4cd2 PH |
10899 | |
10900 | static void | |
76a01679 JB |
10901 | ada_forward_operator_length (struct expression *exp, int pc, |
10902 | int *oplenp, int *argsp) | |
4c4b4cd2 | 10903 | { |
76a01679 | 10904 | switch (exp->elts[pc].opcode) |
4c4b4cd2 PH |
10905 | { |
10906 | default: | |
10907 | *oplenp = *argsp = 0; | |
10908 | break; | |
52ce6436 | 10909 | |
4c4b4cd2 PH |
10910 | #define OP_DEFN(op, len, args, binop) \ |
10911 | case op: *oplenp = len; *argsp = args; break; | |
10912 | ADA_OPERATORS; | |
10913 | #undef OP_DEFN | |
52ce6436 PH |
10914 | |
10915 | case OP_AGGREGATE: | |
10916 | *oplenp = 3; | |
10917 | *argsp = longest_to_int (exp->elts[pc + 1].longconst); | |
10918 | break; | |
10919 | ||
10920 | case OP_CHOICES: | |
10921 | *oplenp = 3; | |
10922 | *argsp = longest_to_int (exp->elts[pc + 1].longconst) + 1; | |
10923 | break; | |
10924 | ||
10925 | case OP_STRING: | |
10926 | case OP_NAME: | |
10927 | { | |
10928 | int len = longest_to_int (exp->elts[pc + 1].longconst); | |
10929 | *oplenp = 4 + BYTES_TO_EXP_ELEM (len + 1); | |
10930 | *argsp = 0; | |
10931 | break; | |
10932 | } | |
4c4b4cd2 PH |
10933 | } |
10934 | } | |
10935 | ||
10936 | static int | |
10937 | ada_dump_subexp_body (struct expression *exp, struct ui_file *stream, int elt) | |
10938 | { | |
10939 | enum exp_opcode op = exp->elts[elt].opcode; | |
10940 | int oplen, nargs; | |
10941 | int pc = elt; | |
10942 | int i; | |
76a01679 | 10943 | |
4c4b4cd2 PH |
10944 | ada_forward_operator_length (exp, elt, &oplen, &nargs); |
10945 | ||
76a01679 | 10946 | switch (op) |
4c4b4cd2 | 10947 | { |
76a01679 | 10948 | /* Ada attributes ('Foo). */ |
4c4b4cd2 PH |
10949 | case OP_ATR_FIRST: |
10950 | case OP_ATR_LAST: | |
10951 | case OP_ATR_LENGTH: | |
10952 | case OP_ATR_IMAGE: | |
10953 | case OP_ATR_MAX: | |
10954 | case OP_ATR_MIN: | |
10955 | case OP_ATR_MODULUS: | |
10956 | case OP_ATR_POS: | |
10957 | case OP_ATR_SIZE: | |
10958 | case OP_ATR_TAG: | |
10959 | case OP_ATR_VAL: | |
10960 | break; | |
10961 | ||
10962 | case UNOP_IN_RANGE: | |
10963 | case UNOP_QUAL: | |
323e0a4a AC |
10964 | /* XXX: gdb_sprint_host_address, type_sprint */ |
10965 | fprintf_filtered (stream, _("Type @")); | |
4c4b4cd2 PH |
10966 | gdb_print_host_address (exp->elts[pc + 1].type, stream); |
10967 | fprintf_filtered (stream, " ("); | |
10968 | type_print (exp->elts[pc + 1].type, NULL, stream, 0); | |
10969 | fprintf_filtered (stream, ")"); | |
10970 | break; | |
10971 | case BINOP_IN_BOUNDS: | |
52ce6436 PH |
10972 | fprintf_filtered (stream, " (%d)", |
10973 | longest_to_int (exp->elts[pc + 2].longconst)); | |
4c4b4cd2 PH |
10974 | break; |
10975 | case TERNOP_IN_RANGE: | |
10976 | break; | |
10977 | ||
52ce6436 PH |
10978 | case OP_AGGREGATE: |
10979 | case OP_OTHERS: | |
10980 | case OP_DISCRETE_RANGE: | |
10981 | case OP_POSITIONAL: | |
10982 | case OP_CHOICES: | |
10983 | break; | |
10984 | ||
10985 | case OP_NAME: | |
10986 | case OP_STRING: | |
10987 | { | |
10988 | char *name = &exp->elts[elt + 2].string; | |
10989 | int len = longest_to_int (exp->elts[elt + 1].longconst); | |
10990 | fprintf_filtered (stream, "Text: `%.*s'", len, name); | |
10991 | break; | |
10992 | } | |
10993 | ||
4c4b4cd2 PH |
10994 | default: |
10995 | return dump_subexp_body_standard (exp, stream, elt); | |
10996 | } | |
10997 | ||
10998 | elt += oplen; | |
10999 | for (i = 0; i < nargs; i += 1) | |
11000 | elt = dump_subexp (exp, stream, elt); | |
11001 | ||
11002 | return elt; | |
11003 | } | |
11004 | ||
11005 | /* The Ada extension of print_subexp (q.v.). */ | |
11006 | ||
76a01679 JB |
11007 | static void |
11008 | ada_print_subexp (struct expression *exp, int *pos, | |
11009 | struct ui_file *stream, enum precedence prec) | |
4c4b4cd2 | 11010 | { |
52ce6436 | 11011 | int oplen, nargs, i; |
4c4b4cd2 PH |
11012 | int pc = *pos; |
11013 | enum exp_opcode op = exp->elts[pc].opcode; | |
11014 | ||
11015 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
11016 | ||
52ce6436 | 11017 | *pos += oplen; |
4c4b4cd2 PH |
11018 | switch (op) |
11019 | { | |
11020 | default: | |
52ce6436 | 11021 | *pos -= oplen; |
4c4b4cd2 PH |
11022 | print_subexp_standard (exp, pos, stream, prec); |
11023 | return; | |
11024 | ||
11025 | case OP_VAR_VALUE: | |
4c4b4cd2 PH |
11026 | fputs_filtered (SYMBOL_NATURAL_NAME (exp->elts[pc + 2].symbol), stream); |
11027 | return; | |
11028 | ||
11029 | case BINOP_IN_BOUNDS: | |
323e0a4a | 11030 | /* XXX: sprint_subexp */ |
4c4b4cd2 | 11031 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 11032 | fputs_filtered (" in ", stream); |
4c4b4cd2 | 11033 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 11034 | fputs_filtered ("'range", stream); |
4c4b4cd2 | 11035 | if (exp->elts[pc + 1].longconst > 1) |
76a01679 JB |
11036 | fprintf_filtered (stream, "(%ld)", |
11037 | (long) exp->elts[pc + 1].longconst); | |
4c4b4cd2 PH |
11038 | return; |
11039 | ||
11040 | case TERNOP_IN_RANGE: | |
4c4b4cd2 | 11041 | if (prec >= PREC_EQUAL) |
76a01679 | 11042 | fputs_filtered ("(", stream); |
323e0a4a | 11043 | /* XXX: sprint_subexp */ |
4c4b4cd2 | 11044 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 11045 | fputs_filtered (" in ", stream); |
4c4b4cd2 PH |
11046 | print_subexp (exp, pos, stream, PREC_EQUAL); |
11047 | fputs_filtered (" .. ", stream); | |
11048 | print_subexp (exp, pos, stream, PREC_EQUAL); | |
11049 | if (prec >= PREC_EQUAL) | |
76a01679 JB |
11050 | fputs_filtered (")", stream); |
11051 | return; | |
4c4b4cd2 PH |
11052 | |
11053 | case OP_ATR_FIRST: | |
11054 | case OP_ATR_LAST: | |
11055 | case OP_ATR_LENGTH: | |
11056 | case OP_ATR_IMAGE: | |
11057 | case OP_ATR_MAX: | |
11058 | case OP_ATR_MIN: | |
11059 | case OP_ATR_MODULUS: | |
11060 | case OP_ATR_POS: | |
11061 | case OP_ATR_SIZE: | |
11062 | case OP_ATR_TAG: | |
11063 | case OP_ATR_VAL: | |
4c4b4cd2 | 11064 | if (exp->elts[*pos].opcode == OP_TYPE) |
76a01679 JB |
11065 | { |
11066 | if (TYPE_CODE (exp->elts[*pos + 1].type) != TYPE_CODE_VOID) | |
11067 | LA_PRINT_TYPE (exp->elts[*pos + 1].type, "", stream, 0, 0); | |
11068 | *pos += 3; | |
11069 | } | |
4c4b4cd2 | 11070 | else |
76a01679 | 11071 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
4c4b4cd2 PH |
11072 | fprintf_filtered (stream, "'%s", ada_attribute_name (op)); |
11073 | if (nargs > 1) | |
76a01679 JB |
11074 | { |
11075 | int tem; | |
11076 | for (tem = 1; tem < nargs; tem += 1) | |
11077 | { | |
11078 | fputs_filtered ((tem == 1) ? " (" : ", ", stream); | |
11079 | print_subexp (exp, pos, stream, PREC_ABOVE_COMMA); | |
11080 | } | |
11081 | fputs_filtered (")", stream); | |
11082 | } | |
4c4b4cd2 | 11083 | return; |
14f9c5c9 | 11084 | |
4c4b4cd2 | 11085 | case UNOP_QUAL: |
4c4b4cd2 PH |
11086 | type_print (exp->elts[pc + 1].type, "", stream, 0); |
11087 | fputs_filtered ("'(", stream); | |
11088 | print_subexp (exp, pos, stream, PREC_PREFIX); | |
11089 | fputs_filtered (")", stream); | |
11090 | return; | |
14f9c5c9 | 11091 | |
4c4b4cd2 | 11092 | case UNOP_IN_RANGE: |
323e0a4a | 11093 | /* XXX: sprint_subexp */ |
4c4b4cd2 | 11094 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 11095 | fputs_filtered (" in ", stream); |
4c4b4cd2 PH |
11096 | LA_PRINT_TYPE (exp->elts[pc + 1].type, "", stream, 1, 0); |
11097 | return; | |
52ce6436 PH |
11098 | |
11099 | case OP_DISCRETE_RANGE: | |
11100 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
11101 | fputs_filtered ("..", stream); | |
11102 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
11103 | return; | |
11104 | ||
11105 | case OP_OTHERS: | |
11106 | fputs_filtered ("others => ", stream); | |
11107 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
11108 | return; | |
11109 | ||
11110 | case OP_CHOICES: | |
11111 | for (i = 0; i < nargs-1; i += 1) | |
11112 | { | |
11113 | if (i > 0) | |
11114 | fputs_filtered ("|", stream); | |
11115 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
11116 | } | |
11117 | fputs_filtered (" => ", stream); | |
11118 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
11119 | return; | |
11120 | ||
11121 | case OP_POSITIONAL: | |
11122 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
11123 | return; | |
11124 | ||
11125 | case OP_AGGREGATE: | |
11126 | fputs_filtered ("(", stream); | |
11127 | for (i = 0; i < nargs; i += 1) | |
11128 | { | |
11129 | if (i > 0) | |
11130 | fputs_filtered (", ", stream); | |
11131 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
11132 | } | |
11133 | fputs_filtered (")", stream); | |
11134 | return; | |
4c4b4cd2 PH |
11135 | } |
11136 | } | |
14f9c5c9 AS |
11137 | |
11138 | /* Table mapping opcodes into strings for printing operators | |
11139 | and precedences of the operators. */ | |
11140 | ||
d2e4a39e AS |
11141 | static const struct op_print ada_op_print_tab[] = { |
11142 | {":=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
11143 | {"or else", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
11144 | {"and then", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
11145 | {"or", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
11146 | {"xor", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
11147 | {"and", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
11148 | {"=", BINOP_EQUAL, PREC_EQUAL, 0}, | |
11149 | {"/=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
11150 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
11151 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
11152 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
11153 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
11154 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
11155 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
11156 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
11157 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
11158 | {"&", BINOP_CONCAT, PREC_ADD, 0}, | |
11159 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
11160 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
11161 | {"rem", BINOP_REM, PREC_MUL, 0}, | |
11162 | {"mod", BINOP_MOD, PREC_MUL, 0}, | |
11163 | {"**", BINOP_EXP, PREC_REPEAT, 0}, | |
11164 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
11165 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
11166 | {"+", UNOP_PLUS, PREC_PREFIX, 0}, | |
11167 | {"not ", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
11168 | {"not ", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
11169 | {"abs ", UNOP_ABS, PREC_PREFIX, 0}, | |
4c4b4cd2 PH |
11170 | {".all", UNOP_IND, PREC_SUFFIX, 1}, |
11171 | {"'access", UNOP_ADDR, PREC_SUFFIX, 1}, | |
11172 | {"'size", OP_ATR_SIZE, PREC_SUFFIX, 1}, | |
d2e4a39e | 11173 | {NULL, 0, 0, 0} |
14f9c5c9 AS |
11174 | }; |
11175 | \f | |
72d5681a PH |
11176 | enum ada_primitive_types { |
11177 | ada_primitive_type_int, | |
11178 | ada_primitive_type_long, | |
11179 | ada_primitive_type_short, | |
11180 | ada_primitive_type_char, | |
11181 | ada_primitive_type_float, | |
11182 | ada_primitive_type_double, | |
11183 | ada_primitive_type_void, | |
11184 | ada_primitive_type_long_long, | |
11185 | ada_primitive_type_long_double, | |
11186 | ada_primitive_type_natural, | |
11187 | ada_primitive_type_positive, | |
11188 | ada_primitive_type_system_address, | |
11189 | nr_ada_primitive_types | |
11190 | }; | |
6c038f32 PH |
11191 | |
11192 | static void | |
d4a9a881 | 11193 | ada_language_arch_info (struct gdbarch *gdbarch, |
72d5681a PH |
11194 | struct language_arch_info *lai) |
11195 | { | |
d4a9a881 | 11196 | const struct builtin_type *builtin = builtin_type (gdbarch); |
72d5681a | 11197 | lai->primitive_type_vector |
d4a9a881 | 11198 | = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_ada_primitive_types + 1, |
72d5681a | 11199 | struct type *); |
e9bb382b UW |
11200 | |
11201 | lai->primitive_type_vector [ada_primitive_type_int] | |
11202 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
11203 | 0, "integer"); | |
11204 | lai->primitive_type_vector [ada_primitive_type_long] | |
11205 | = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), | |
11206 | 0, "long_integer"); | |
11207 | lai->primitive_type_vector [ada_primitive_type_short] | |
11208 | = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), | |
11209 | 0, "short_integer"); | |
11210 | lai->string_char_type | |
11211 | = lai->primitive_type_vector [ada_primitive_type_char] | |
11212 | = arch_integer_type (gdbarch, TARGET_CHAR_BIT, 0, "character"); | |
11213 | lai->primitive_type_vector [ada_primitive_type_float] | |
11214 | = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch), | |
11215 | "float", NULL); | |
11216 | lai->primitive_type_vector [ada_primitive_type_double] | |
11217 | = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch), | |
11218 | "long_float", NULL); | |
11219 | lai->primitive_type_vector [ada_primitive_type_long_long] | |
11220 | = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch), | |
11221 | 0, "long_long_integer"); | |
11222 | lai->primitive_type_vector [ada_primitive_type_long_double] | |
11223 | = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch), | |
11224 | "long_long_float", NULL); | |
11225 | lai->primitive_type_vector [ada_primitive_type_natural] | |
11226 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
11227 | 0, "natural"); | |
11228 | lai->primitive_type_vector [ada_primitive_type_positive] | |
11229 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
11230 | 0, "positive"); | |
11231 | lai->primitive_type_vector [ada_primitive_type_void] | |
11232 | = builtin->builtin_void; | |
11233 | ||
11234 | lai->primitive_type_vector [ada_primitive_type_system_address] | |
11235 | = lookup_pointer_type (arch_type (gdbarch, TYPE_CODE_VOID, 1, "void")); | |
72d5681a PH |
11236 | TYPE_NAME (lai->primitive_type_vector [ada_primitive_type_system_address]) |
11237 | = "system__address"; | |
fbb06eb1 | 11238 | |
47e729a8 | 11239 | lai->bool_type_symbol = NULL; |
fbb06eb1 | 11240 | lai->bool_type_default = builtin->builtin_bool; |
6c038f32 | 11241 | } |
6c038f32 PH |
11242 | \f |
11243 | /* Language vector */ | |
11244 | ||
11245 | /* Not really used, but needed in the ada_language_defn. */ | |
11246 | ||
11247 | static void | |
6c7a06a3 | 11248 | emit_char (int c, struct type *type, struct ui_file *stream, int quoter) |
6c038f32 | 11249 | { |
6c7a06a3 | 11250 | ada_emit_char (c, type, stream, quoter, 1); |
6c038f32 PH |
11251 | } |
11252 | ||
11253 | static int | |
11254 | parse (void) | |
11255 | { | |
11256 | warnings_issued = 0; | |
11257 | return ada_parse (); | |
11258 | } | |
11259 | ||
11260 | static const struct exp_descriptor ada_exp_descriptor = { | |
11261 | ada_print_subexp, | |
11262 | ada_operator_length, | |
11263 | ada_op_name, | |
11264 | ada_dump_subexp_body, | |
11265 | ada_evaluate_subexp | |
11266 | }; | |
11267 | ||
11268 | const struct language_defn ada_language_defn = { | |
11269 | "ada", /* Language name */ | |
11270 | language_ada, | |
6c038f32 PH |
11271 | range_check_off, |
11272 | type_check_off, | |
11273 | case_sensitive_on, /* Yes, Ada is case-insensitive, but | |
11274 | that's not quite what this means. */ | |
6c038f32 | 11275 | array_row_major, |
9a044a89 | 11276 | macro_expansion_no, |
6c038f32 PH |
11277 | &ada_exp_descriptor, |
11278 | parse, | |
11279 | ada_error, | |
11280 | resolve, | |
11281 | ada_printchar, /* Print a character constant */ | |
11282 | ada_printstr, /* Function to print string constant */ | |
11283 | emit_char, /* Function to print single char (not used) */ | |
6c038f32 | 11284 | ada_print_type, /* Print a type using appropriate syntax */ |
5c6ce71d | 11285 | default_print_typedef, /* Print a typedef using appropriate syntax */ |
6c038f32 PH |
11286 | ada_val_print, /* Print a value using appropriate syntax */ |
11287 | ada_value_print, /* Print a top-level value */ | |
11288 | NULL, /* Language specific skip_trampoline */ | |
2b2d9e11 | 11289 | NULL, /* name_of_this */ |
6c038f32 PH |
11290 | ada_lookup_symbol_nonlocal, /* Looking up non-local symbols. */ |
11291 | basic_lookup_transparent_type, /* lookup_transparent_type */ | |
11292 | ada_la_decode, /* Language specific symbol demangler */ | |
11293 | NULL, /* Language specific class_name_from_physname */ | |
11294 | ada_op_print_tab, /* expression operators for printing */ | |
11295 | 0, /* c-style arrays */ | |
11296 | 1, /* String lower bound */ | |
6c038f32 | 11297 | ada_get_gdb_completer_word_break_characters, |
41d27058 | 11298 | ada_make_symbol_completion_list, |
72d5681a | 11299 | ada_language_arch_info, |
e79af960 | 11300 | ada_print_array_index, |
41f1b697 | 11301 | default_pass_by_reference, |
ae6a3a4c | 11302 | c_get_string, |
6c038f32 PH |
11303 | LANG_MAGIC |
11304 | }; | |
11305 | ||
2c0b251b PA |
11306 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
11307 | extern initialize_file_ftype _initialize_ada_language; | |
11308 | ||
d2e4a39e | 11309 | void |
6c038f32 | 11310 | _initialize_ada_language (void) |
14f9c5c9 | 11311 | { |
6c038f32 PH |
11312 | add_language (&ada_language_defn); |
11313 | ||
11314 | varsize_limit = 65536; | |
6c038f32 PH |
11315 | |
11316 | obstack_init (&symbol_list_obstack); | |
11317 | ||
11318 | decoded_names_store = htab_create_alloc | |
11319 | (256, htab_hash_string, (int (*)(const void *, const void *)) streq, | |
11320 | NULL, xcalloc, xfree); | |
6b69afc4 JB |
11321 | |
11322 | observer_attach_executable_changed (ada_executable_changed_observer); | |
14f9c5c9 | 11323 | } |