Commit | Line | Data |
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6e681866 | 1 | /* Ada language support routines for GDB, the GNU debugger. |
10a2c479 | 2 | |
28e7fd62 | 3 | Copyright (C) 1992-2013 Free Software Foundation, Inc. |
14f9c5c9 | 4 | |
a9762ec7 | 5 | This file is part of GDB. |
14f9c5c9 | 6 | |
a9762ec7 JB |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
14f9c5c9 | 11 | |
a9762ec7 JB |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
14f9c5c9 | 16 | |
a9762ec7 JB |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
14f9c5c9 | 19 | |
96d887e8 | 20 | |
4c4b4cd2 | 21 | #include "defs.h" |
14f9c5c9 | 22 | #include <stdio.h> |
0c30c098 | 23 | #include "gdb_string.h" |
14f9c5c9 AS |
24 | #include <ctype.h> |
25 | #include <stdarg.h> | |
26 | #include "demangle.h" | |
4c4b4cd2 PH |
27 | #include "gdb_regex.h" |
28 | #include "frame.h" | |
14f9c5c9 AS |
29 | #include "symtab.h" |
30 | #include "gdbtypes.h" | |
31 | #include "gdbcmd.h" | |
32 | #include "expression.h" | |
33 | #include "parser-defs.h" | |
34 | #include "language.h" | |
35 | #include "c-lang.h" | |
36 | #include "inferior.h" | |
37 | #include "symfile.h" | |
38 | #include "objfiles.h" | |
39 | #include "breakpoint.h" | |
40 | #include "gdbcore.h" | |
4c4b4cd2 PH |
41 | #include "hashtab.h" |
42 | #include "gdb_obstack.h" | |
14f9c5c9 | 43 | #include "ada-lang.h" |
4c4b4cd2 PH |
44 | #include "completer.h" |
45 | #include "gdb_stat.h" | |
46 | #ifdef UI_OUT | |
14f9c5c9 | 47 | #include "ui-out.h" |
4c4b4cd2 | 48 | #endif |
fe898f56 | 49 | #include "block.h" |
04714b91 | 50 | #include "infcall.h" |
de4f826b | 51 | #include "dictionary.h" |
60250e8b | 52 | #include "exceptions.h" |
f7f9143b JB |
53 | #include "annotate.h" |
54 | #include "valprint.h" | |
9bbc9174 | 55 | #include "source.h" |
0259addd | 56 | #include "observer.h" |
2ba95b9b | 57 | #include "vec.h" |
692465f1 | 58 | #include "stack.h" |
fa864999 | 59 | #include "gdb_vecs.h" |
79d43c61 | 60 | #include "typeprint.h" |
14f9c5c9 | 61 | |
ccefe4c4 | 62 | #include "psymtab.h" |
40bc484c | 63 | #include "value.h" |
956a9fb9 | 64 | #include "mi/mi-common.h" |
9ac4176b | 65 | #include "arch-utils.h" |
28010a5d | 66 | #include "exceptions.h" |
0fcd72ba | 67 | #include "cli/cli-utils.h" |
ccefe4c4 | 68 | |
4c4b4cd2 | 69 | /* Define whether or not the C operator '/' truncates towards zero for |
0963b4bd | 70 | differently signed operands (truncation direction is undefined in C). |
4c4b4cd2 PH |
71 | Copied from valarith.c. */ |
72 | ||
73 | #ifndef TRUNCATION_TOWARDS_ZERO | |
74 | #define TRUNCATION_TOWARDS_ZERO ((-5 / 2) == -2) | |
75 | #endif | |
76 | ||
d2e4a39e | 77 | static struct type *desc_base_type (struct type *); |
14f9c5c9 | 78 | |
d2e4a39e | 79 | static struct type *desc_bounds_type (struct type *); |
14f9c5c9 | 80 | |
d2e4a39e | 81 | static struct value *desc_bounds (struct value *); |
14f9c5c9 | 82 | |
d2e4a39e | 83 | static int fat_pntr_bounds_bitpos (struct type *); |
14f9c5c9 | 84 | |
d2e4a39e | 85 | static int fat_pntr_bounds_bitsize (struct type *); |
14f9c5c9 | 86 | |
556bdfd4 | 87 | static struct type *desc_data_target_type (struct type *); |
14f9c5c9 | 88 | |
d2e4a39e | 89 | static struct value *desc_data (struct value *); |
14f9c5c9 | 90 | |
d2e4a39e | 91 | static int fat_pntr_data_bitpos (struct type *); |
14f9c5c9 | 92 | |
d2e4a39e | 93 | static int fat_pntr_data_bitsize (struct type *); |
14f9c5c9 | 94 | |
d2e4a39e | 95 | static struct value *desc_one_bound (struct value *, int, int); |
14f9c5c9 | 96 | |
d2e4a39e | 97 | static int desc_bound_bitpos (struct type *, int, int); |
14f9c5c9 | 98 | |
d2e4a39e | 99 | static int desc_bound_bitsize (struct type *, int, int); |
14f9c5c9 | 100 | |
d2e4a39e | 101 | static struct type *desc_index_type (struct type *, int); |
14f9c5c9 | 102 | |
d2e4a39e | 103 | static int desc_arity (struct type *); |
14f9c5c9 | 104 | |
d2e4a39e | 105 | static int ada_type_match (struct type *, struct type *, int); |
14f9c5c9 | 106 | |
d2e4a39e | 107 | static int ada_args_match (struct symbol *, struct value **, int); |
14f9c5c9 | 108 | |
40658b94 PH |
109 | static int full_match (const char *, const char *); |
110 | ||
40bc484c | 111 | static struct value *make_array_descriptor (struct type *, struct value *); |
14f9c5c9 | 112 | |
4c4b4cd2 | 113 | static void ada_add_block_symbols (struct obstack *, |
76a01679 | 114 | struct block *, const char *, |
2570f2b7 | 115 | domain_enum, struct objfile *, int); |
14f9c5c9 | 116 | |
4c4b4cd2 | 117 | static int is_nonfunction (struct ada_symbol_info *, int); |
14f9c5c9 | 118 | |
76a01679 | 119 | static void add_defn_to_vec (struct obstack *, struct symbol *, |
2570f2b7 | 120 | struct block *); |
14f9c5c9 | 121 | |
4c4b4cd2 PH |
122 | static int num_defns_collected (struct obstack *); |
123 | ||
124 | static struct ada_symbol_info *defns_collected (struct obstack *, int); | |
14f9c5c9 | 125 | |
4c4b4cd2 | 126 | static struct value *resolve_subexp (struct expression **, int *, int, |
76a01679 | 127 | struct type *); |
14f9c5c9 | 128 | |
d2e4a39e | 129 | static void replace_operator_with_call (struct expression **, int, int, int, |
270140bd | 130 | struct symbol *, const struct block *); |
14f9c5c9 | 131 | |
d2e4a39e | 132 | static int possible_user_operator_p (enum exp_opcode, struct value **); |
14f9c5c9 | 133 | |
4c4b4cd2 PH |
134 | static char *ada_op_name (enum exp_opcode); |
135 | ||
136 | static const char *ada_decoded_op_name (enum exp_opcode); | |
14f9c5c9 | 137 | |
d2e4a39e | 138 | static int numeric_type_p (struct type *); |
14f9c5c9 | 139 | |
d2e4a39e | 140 | static int integer_type_p (struct type *); |
14f9c5c9 | 141 | |
d2e4a39e | 142 | static int scalar_type_p (struct type *); |
14f9c5c9 | 143 | |
d2e4a39e | 144 | static int discrete_type_p (struct type *); |
14f9c5c9 | 145 | |
aeb5907d JB |
146 | static enum ada_renaming_category parse_old_style_renaming (struct type *, |
147 | const char **, | |
148 | int *, | |
149 | const char **); | |
150 | ||
151 | static struct symbol *find_old_style_renaming_symbol (const char *, | |
270140bd | 152 | const struct block *); |
aeb5907d | 153 | |
4c4b4cd2 | 154 | static struct type *ada_lookup_struct_elt_type (struct type *, char *, |
76a01679 | 155 | int, int, int *); |
4c4b4cd2 | 156 | |
d2e4a39e | 157 | static struct value *evaluate_subexp_type (struct expression *, int *); |
14f9c5c9 | 158 | |
b4ba55a1 JB |
159 | static struct type *ada_find_parallel_type_with_name (struct type *, |
160 | const char *); | |
161 | ||
d2e4a39e | 162 | static int is_dynamic_field (struct type *, int); |
14f9c5c9 | 163 | |
10a2c479 | 164 | static struct type *to_fixed_variant_branch_type (struct type *, |
fc1a4b47 | 165 | const gdb_byte *, |
4c4b4cd2 PH |
166 | CORE_ADDR, struct value *); |
167 | ||
168 | static struct type *to_fixed_array_type (struct type *, struct value *, int); | |
14f9c5c9 | 169 | |
28c85d6c | 170 | static struct type *to_fixed_range_type (struct type *, struct value *); |
14f9c5c9 | 171 | |
d2e4a39e | 172 | static struct type *to_static_fixed_type (struct type *); |
f192137b | 173 | static struct type *static_unwrap_type (struct type *type); |
14f9c5c9 | 174 | |
d2e4a39e | 175 | static struct value *unwrap_value (struct value *); |
14f9c5c9 | 176 | |
ad82864c | 177 | static struct type *constrained_packed_array_type (struct type *, long *); |
14f9c5c9 | 178 | |
ad82864c | 179 | static struct type *decode_constrained_packed_array_type (struct type *); |
14f9c5c9 | 180 | |
ad82864c JB |
181 | static long decode_packed_array_bitsize (struct type *); |
182 | ||
183 | static struct value *decode_constrained_packed_array (struct value *); | |
184 | ||
185 | static int ada_is_packed_array_type (struct type *); | |
186 | ||
187 | static int ada_is_unconstrained_packed_array_type (struct type *); | |
14f9c5c9 | 188 | |
d2e4a39e | 189 | static struct value *value_subscript_packed (struct value *, int, |
4c4b4cd2 | 190 | struct value **); |
14f9c5c9 | 191 | |
50810684 | 192 | static void move_bits (gdb_byte *, int, const gdb_byte *, int, int, int); |
52ce6436 | 193 | |
4c4b4cd2 PH |
194 | static struct value *coerce_unspec_val_to_type (struct value *, |
195 | struct type *); | |
14f9c5c9 | 196 | |
d2e4a39e | 197 | static struct value *get_var_value (char *, char *); |
14f9c5c9 | 198 | |
d2e4a39e | 199 | static int lesseq_defined_than (struct symbol *, struct symbol *); |
14f9c5c9 | 200 | |
d2e4a39e | 201 | static int equiv_types (struct type *, struct type *); |
14f9c5c9 | 202 | |
d2e4a39e | 203 | static int is_name_suffix (const char *); |
14f9c5c9 | 204 | |
73589123 PH |
205 | static int advance_wild_match (const char **, const char *, int); |
206 | ||
207 | static int wild_match (const char *, const char *); | |
14f9c5c9 | 208 | |
d2e4a39e | 209 | static struct value *ada_coerce_ref (struct value *); |
14f9c5c9 | 210 | |
4c4b4cd2 PH |
211 | static LONGEST pos_atr (struct value *); |
212 | ||
3cb382c9 | 213 | static struct value *value_pos_atr (struct type *, struct value *); |
14f9c5c9 | 214 | |
d2e4a39e | 215 | static struct value *value_val_atr (struct type *, struct value *); |
14f9c5c9 | 216 | |
4c4b4cd2 PH |
217 | static struct symbol *standard_lookup (const char *, const struct block *, |
218 | domain_enum); | |
14f9c5c9 | 219 | |
4c4b4cd2 PH |
220 | static struct value *ada_search_struct_field (char *, struct value *, int, |
221 | struct type *); | |
222 | ||
223 | static struct value *ada_value_primitive_field (struct value *, int, int, | |
224 | struct type *); | |
225 | ||
0d5cff50 | 226 | static int find_struct_field (const char *, struct type *, int, |
52ce6436 | 227 | struct type **, int *, int *, int *, int *); |
4c4b4cd2 PH |
228 | |
229 | static struct value *ada_to_fixed_value_create (struct type *, CORE_ADDR, | |
230 | struct value *); | |
231 | ||
4c4b4cd2 PH |
232 | static int ada_resolve_function (struct ada_symbol_info *, int, |
233 | struct value **, int, const char *, | |
234 | struct type *); | |
235 | ||
4c4b4cd2 PH |
236 | static int ada_is_direct_array_type (struct type *); |
237 | ||
72d5681a PH |
238 | static void ada_language_arch_info (struct gdbarch *, |
239 | struct language_arch_info *); | |
714e53ab PH |
240 | |
241 | static void check_size (const struct type *); | |
52ce6436 PH |
242 | |
243 | static struct value *ada_index_struct_field (int, struct value *, int, | |
244 | struct type *); | |
245 | ||
246 | static struct value *assign_aggregate (struct value *, struct value *, | |
0963b4bd MS |
247 | struct expression *, |
248 | int *, enum noside); | |
52ce6436 PH |
249 | |
250 | static void aggregate_assign_from_choices (struct value *, struct value *, | |
251 | struct expression *, | |
252 | int *, LONGEST *, int *, | |
253 | int, LONGEST, LONGEST); | |
254 | ||
255 | static void aggregate_assign_positional (struct value *, struct value *, | |
256 | struct expression *, | |
257 | int *, LONGEST *, int *, int, | |
258 | LONGEST, LONGEST); | |
259 | ||
260 | ||
261 | static void aggregate_assign_others (struct value *, struct value *, | |
262 | struct expression *, | |
263 | int *, LONGEST *, int, LONGEST, LONGEST); | |
264 | ||
265 | ||
266 | static void add_component_interval (LONGEST, LONGEST, LONGEST *, int *, int); | |
267 | ||
268 | ||
269 | static struct value *ada_evaluate_subexp (struct type *, struct expression *, | |
270 | int *, enum noside); | |
271 | ||
272 | static void ada_forward_operator_length (struct expression *, int, int *, | |
273 | int *); | |
852dff6c JB |
274 | |
275 | static struct type *ada_find_any_type (const char *name); | |
4c4b4cd2 PH |
276 | \f |
277 | ||
76a01679 | 278 | |
4c4b4cd2 | 279 | /* Maximum-sized dynamic type. */ |
14f9c5c9 AS |
280 | static unsigned int varsize_limit; |
281 | ||
4c4b4cd2 PH |
282 | /* FIXME: brobecker/2003-09-17: No longer a const because it is |
283 | returned by a function that does not return a const char *. */ | |
284 | static char *ada_completer_word_break_characters = | |
285 | #ifdef VMS | |
286 | " \t\n!@#%^&*()+=|~`}{[]\";:?/,-"; | |
287 | #else | |
14f9c5c9 | 288 | " \t\n!@#$%^&*()+=|~`}{[]\";:?/,-"; |
4c4b4cd2 | 289 | #endif |
14f9c5c9 | 290 | |
4c4b4cd2 | 291 | /* The name of the symbol to use to get the name of the main subprogram. */ |
76a01679 | 292 | static const char ADA_MAIN_PROGRAM_SYMBOL_NAME[] |
4c4b4cd2 | 293 | = "__gnat_ada_main_program_name"; |
14f9c5c9 | 294 | |
4c4b4cd2 PH |
295 | /* Limit on the number of warnings to raise per expression evaluation. */ |
296 | static int warning_limit = 2; | |
297 | ||
298 | /* Number of warning messages issued; reset to 0 by cleanups after | |
299 | expression evaluation. */ | |
300 | static int warnings_issued = 0; | |
301 | ||
302 | static const char *known_runtime_file_name_patterns[] = { | |
303 | ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS NULL | |
304 | }; | |
305 | ||
306 | static const char *known_auxiliary_function_name_patterns[] = { | |
307 | ADA_KNOWN_AUXILIARY_FUNCTION_NAME_PATTERNS NULL | |
308 | }; | |
309 | ||
310 | /* Space for allocating results of ada_lookup_symbol_list. */ | |
311 | static struct obstack symbol_list_obstack; | |
312 | ||
e802dbe0 JB |
313 | /* Inferior-specific data. */ |
314 | ||
315 | /* Per-inferior data for this module. */ | |
316 | ||
317 | struct ada_inferior_data | |
318 | { | |
319 | /* The ada__tags__type_specific_data type, which is used when decoding | |
320 | tagged types. With older versions of GNAT, this type was directly | |
321 | accessible through a component ("tsd") in the object tag. But this | |
322 | is no longer the case, so we cache it for each inferior. */ | |
323 | struct type *tsd_type; | |
3eecfa55 JB |
324 | |
325 | /* The exception_support_info data. This data is used to determine | |
326 | how to implement support for Ada exception catchpoints in a given | |
327 | inferior. */ | |
328 | const struct exception_support_info *exception_info; | |
e802dbe0 JB |
329 | }; |
330 | ||
331 | /* Our key to this module's inferior data. */ | |
332 | static const struct inferior_data *ada_inferior_data; | |
333 | ||
334 | /* A cleanup routine for our inferior data. */ | |
335 | static void | |
336 | ada_inferior_data_cleanup (struct inferior *inf, void *arg) | |
337 | { | |
338 | struct ada_inferior_data *data; | |
339 | ||
340 | data = inferior_data (inf, ada_inferior_data); | |
341 | if (data != NULL) | |
342 | xfree (data); | |
343 | } | |
344 | ||
345 | /* Return our inferior data for the given inferior (INF). | |
346 | ||
347 | This function always returns a valid pointer to an allocated | |
348 | ada_inferior_data structure. If INF's inferior data has not | |
349 | been previously set, this functions creates a new one with all | |
350 | fields set to zero, sets INF's inferior to it, and then returns | |
351 | a pointer to that newly allocated ada_inferior_data. */ | |
352 | ||
353 | static struct ada_inferior_data * | |
354 | get_ada_inferior_data (struct inferior *inf) | |
355 | { | |
356 | struct ada_inferior_data *data; | |
357 | ||
358 | data = inferior_data (inf, ada_inferior_data); | |
359 | if (data == NULL) | |
360 | { | |
361 | data = XZALLOC (struct ada_inferior_data); | |
362 | set_inferior_data (inf, ada_inferior_data, data); | |
363 | } | |
364 | ||
365 | return data; | |
366 | } | |
367 | ||
368 | /* Perform all necessary cleanups regarding our module's inferior data | |
369 | that is required after the inferior INF just exited. */ | |
370 | ||
371 | static void | |
372 | ada_inferior_exit (struct inferior *inf) | |
373 | { | |
374 | ada_inferior_data_cleanup (inf, NULL); | |
375 | set_inferior_data (inf, ada_inferior_data, NULL); | |
376 | } | |
377 | ||
4c4b4cd2 PH |
378 | /* Utilities */ |
379 | ||
720d1a40 | 380 | /* If TYPE is a TYPE_CODE_TYPEDEF type, return the target type after |
eed9788b | 381 | all typedef layers have been peeled. Otherwise, return TYPE. |
720d1a40 JB |
382 | |
383 | Normally, we really expect a typedef type to only have 1 typedef layer. | |
384 | In other words, we really expect the target type of a typedef type to be | |
385 | a non-typedef type. This is particularly true for Ada units, because | |
386 | the language does not have a typedef vs not-typedef distinction. | |
387 | In that respect, the Ada compiler has been trying to eliminate as many | |
388 | typedef definitions in the debugging information, since they generally | |
389 | do not bring any extra information (we still use typedef under certain | |
390 | circumstances related mostly to the GNAT encoding). | |
391 | ||
392 | Unfortunately, we have seen situations where the debugging information | |
393 | generated by the compiler leads to such multiple typedef layers. For | |
394 | instance, consider the following example with stabs: | |
395 | ||
396 | .stabs "pck__float_array___XUP:Tt(0,46)=s16P_ARRAY:(0,47)=[...]"[...] | |
397 | .stabs "pck__float_array___XUP:t(0,36)=(0,46)",128,0,6,0 | |
398 | ||
399 | This is an error in the debugging information which causes type | |
400 | pck__float_array___XUP to be defined twice, and the second time, | |
401 | it is defined as a typedef of a typedef. | |
402 | ||
403 | This is on the fringe of legality as far as debugging information is | |
404 | concerned, and certainly unexpected. But it is easy to handle these | |
405 | situations correctly, so we can afford to be lenient in this case. */ | |
406 | ||
407 | static struct type * | |
408 | ada_typedef_target_type (struct type *type) | |
409 | { | |
410 | while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) | |
411 | type = TYPE_TARGET_TYPE (type); | |
412 | return type; | |
413 | } | |
414 | ||
41d27058 JB |
415 | /* Given DECODED_NAME a string holding a symbol name in its |
416 | decoded form (ie using the Ada dotted notation), returns | |
417 | its unqualified name. */ | |
418 | ||
419 | static const char * | |
420 | ada_unqualified_name (const char *decoded_name) | |
421 | { | |
422 | const char *result = strrchr (decoded_name, '.'); | |
423 | ||
424 | if (result != NULL) | |
425 | result++; /* Skip the dot... */ | |
426 | else | |
427 | result = decoded_name; | |
428 | ||
429 | return result; | |
430 | } | |
431 | ||
432 | /* Return a string starting with '<', followed by STR, and '>'. | |
433 | The result is good until the next call. */ | |
434 | ||
435 | static char * | |
436 | add_angle_brackets (const char *str) | |
437 | { | |
438 | static char *result = NULL; | |
439 | ||
440 | xfree (result); | |
88c15c34 | 441 | result = xstrprintf ("<%s>", str); |
41d27058 JB |
442 | return result; |
443 | } | |
96d887e8 | 444 | |
4c4b4cd2 PH |
445 | static char * |
446 | ada_get_gdb_completer_word_break_characters (void) | |
447 | { | |
448 | return ada_completer_word_break_characters; | |
449 | } | |
450 | ||
e79af960 JB |
451 | /* Print an array element index using the Ada syntax. */ |
452 | ||
453 | static void | |
454 | ada_print_array_index (struct value *index_value, struct ui_file *stream, | |
79a45b7d | 455 | const struct value_print_options *options) |
e79af960 | 456 | { |
79a45b7d | 457 | LA_VALUE_PRINT (index_value, stream, options); |
e79af960 JB |
458 | fprintf_filtered (stream, " => "); |
459 | } | |
460 | ||
f27cf670 | 461 | /* Assuming VECT points to an array of *SIZE objects of size |
14f9c5c9 | 462 | ELEMENT_SIZE, grow it to contain at least MIN_SIZE objects, |
f27cf670 | 463 | updating *SIZE as necessary and returning the (new) array. */ |
14f9c5c9 | 464 | |
f27cf670 AS |
465 | void * |
466 | grow_vect (void *vect, size_t *size, size_t min_size, int element_size) | |
14f9c5c9 | 467 | { |
d2e4a39e AS |
468 | if (*size < min_size) |
469 | { | |
470 | *size *= 2; | |
471 | if (*size < min_size) | |
4c4b4cd2 | 472 | *size = min_size; |
f27cf670 | 473 | vect = xrealloc (vect, *size * element_size); |
d2e4a39e | 474 | } |
f27cf670 | 475 | return vect; |
14f9c5c9 AS |
476 | } |
477 | ||
478 | /* True (non-zero) iff TARGET matches FIELD_NAME up to any trailing | |
4c4b4cd2 | 479 | suffix of FIELD_NAME beginning "___". */ |
14f9c5c9 AS |
480 | |
481 | static int | |
ebf56fd3 | 482 | field_name_match (const char *field_name, const char *target) |
14f9c5c9 AS |
483 | { |
484 | int len = strlen (target); | |
5b4ee69b | 485 | |
d2e4a39e | 486 | return |
4c4b4cd2 PH |
487 | (strncmp (field_name, target, len) == 0 |
488 | && (field_name[len] == '\0' | |
489 | || (strncmp (field_name + len, "___", 3) == 0 | |
76a01679 JB |
490 | && strcmp (field_name + strlen (field_name) - 6, |
491 | "___XVN") != 0))); | |
14f9c5c9 AS |
492 | } |
493 | ||
494 | ||
872c8b51 JB |
495 | /* Assuming TYPE is a TYPE_CODE_STRUCT or a TYPE_CODE_TYPDEF to |
496 | a TYPE_CODE_STRUCT, find the field whose name matches FIELD_NAME, | |
497 | and return its index. This function also handles fields whose name | |
498 | have ___ suffixes because the compiler sometimes alters their name | |
499 | by adding such a suffix to represent fields with certain constraints. | |
500 | If the field could not be found, return a negative number if | |
501 | MAYBE_MISSING is set. Otherwise raise an error. */ | |
4c4b4cd2 PH |
502 | |
503 | int | |
504 | ada_get_field_index (const struct type *type, const char *field_name, | |
505 | int maybe_missing) | |
506 | { | |
507 | int fieldno; | |
872c8b51 JB |
508 | struct type *struct_type = check_typedef ((struct type *) type); |
509 | ||
510 | for (fieldno = 0; fieldno < TYPE_NFIELDS (struct_type); fieldno++) | |
511 | if (field_name_match (TYPE_FIELD_NAME (struct_type, fieldno), field_name)) | |
4c4b4cd2 PH |
512 | return fieldno; |
513 | ||
514 | if (!maybe_missing) | |
323e0a4a | 515 | error (_("Unable to find field %s in struct %s. Aborting"), |
872c8b51 | 516 | field_name, TYPE_NAME (struct_type)); |
4c4b4cd2 PH |
517 | |
518 | return -1; | |
519 | } | |
520 | ||
521 | /* The length of the prefix of NAME prior to any "___" suffix. */ | |
14f9c5c9 AS |
522 | |
523 | int | |
d2e4a39e | 524 | ada_name_prefix_len (const char *name) |
14f9c5c9 AS |
525 | { |
526 | if (name == NULL) | |
527 | return 0; | |
d2e4a39e | 528 | else |
14f9c5c9 | 529 | { |
d2e4a39e | 530 | const char *p = strstr (name, "___"); |
5b4ee69b | 531 | |
14f9c5c9 | 532 | if (p == NULL) |
4c4b4cd2 | 533 | return strlen (name); |
14f9c5c9 | 534 | else |
4c4b4cd2 | 535 | return p - name; |
14f9c5c9 AS |
536 | } |
537 | } | |
538 | ||
4c4b4cd2 PH |
539 | /* Return non-zero if SUFFIX is a suffix of STR. |
540 | Return zero if STR is null. */ | |
541 | ||
14f9c5c9 | 542 | static int |
d2e4a39e | 543 | is_suffix (const char *str, const char *suffix) |
14f9c5c9 AS |
544 | { |
545 | int len1, len2; | |
5b4ee69b | 546 | |
14f9c5c9 AS |
547 | if (str == NULL) |
548 | return 0; | |
549 | len1 = strlen (str); | |
550 | len2 = strlen (suffix); | |
4c4b4cd2 | 551 | return (len1 >= len2 && strcmp (str + len1 - len2, suffix) == 0); |
14f9c5c9 AS |
552 | } |
553 | ||
4c4b4cd2 PH |
554 | /* The contents of value VAL, treated as a value of type TYPE. The |
555 | result is an lval in memory if VAL is. */ | |
14f9c5c9 | 556 | |
d2e4a39e | 557 | static struct value * |
4c4b4cd2 | 558 | coerce_unspec_val_to_type (struct value *val, struct type *type) |
14f9c5c9 | 559 | { |
61ee279c | 560 | type = ada_check_typedef (type); |
df407dfe | 561 | if (value_type (val) == type) |
4c4b4cd2 | 562 | return val; |
d2e4a39e | 563 | else |
14f9c5c9 | 564 | { |
4c4b4cd2 PH |
565 | struct value *result; |
566 | ||
567 | /* Make sure that the object size is not unreasonable before | |
568 | trying to allocate some memory for it. */ | |
714e53ab | 569 | check_size (type); |
4c4b4cd2 | 570 | |
41e8491f JK |
571 | if (value_lazy (val) |
572 | || TYPE_LENGTH (type) > TYPE_LENGTH (value_type (val))) | |
573 | result = allocate_value_lazy (type); | |
574 | else | |
575 | { | |
576 | result = allocate_value (type); | |
577 | memcpy (value_contents_raw (result), value_contents (val), | |
578 | TYPE_LENGTH (type)); | |
579 | } | |
74bcbdf3 | 580 | set_value_component_location (result, val); |
9bbda503 AC |
581 | set_value_bitsize (result, value_bitsize (val)); |
582 | set_value_bitpos (result, value_bitpos (val)); | |
42ae5230 | 583 | set_value_address (result, value_address (val)); |
2fa15f23 | 584 | set_value_optimized_out (result, value_optimized_out (val)); |
14f9c5c9 AS |
585 | return result; |
586 | } | |
587 | } | |
588 | ||
fc1a4b47 AC |
589 | static const gdb_byte * |
590 | cond_offset_host (const gdb_byte *valaddr, long offset) | |
14f9c5c9 AS |
591 | { |
592 | if (valaddr == NULL) | |
593 | return NULL; | |
594 | else | |
595 | return valaddr + offset; | |
596 | } | |
597 | ||
598 | static CORE_ADDR | |
ebf56fd3 | 599 | cond_offset_target (CORE_ADDR address, long offset) |
14f9c5c9 AS |
600 | { |
601 | if (address == 0) | |
602 | return 0; | |
d2e4a39e | 603 | else |
14f9c5c9 AS |
604 | return address + offset; |
605 | } | |
606 | ||
4c4b4cd2 PH |
607 | /* Issue a warning (as for the definition of warning in utils.c, but |
608 | with exactly one argument rather than ...), unless the limit on the | |
609 | number of warnings has passed during the evaluation of the current | |
610 | expression. */ | |
a2249542 | 611 | |
77109804 AC |
612 | /* FIXME: cagney/2004-10-10: This function is mimicking the behavior |
613 | provided by "complaint". */ | |
a0b31db1 | 614 | static void lim_warning (const char *format, ...) ATTRIBUTE_PRINTF (1, 2); |
77109804 | 615 | |
14f9c5c9 | 616 | static void |
a2249542 | 617 | lim_warning (const char *format, ...) |
14f9c5c9 | 618 | { |
a2249542 | 619 | va_list args; |
a2249542 | 620 | |
5b4ee69b | 621 | va_start (args, format); |
4c4b4cd2 PH |
622 | warnings_issued += 1; |
623 | if (warnings_issued <= warning_limit) | |
a2249542 MK |
624 | vwarning (format, args); |
625 | ||
626 | va_end (args); | |
4c4b4cd2 PH |
627 | } |
628 | ||
714e53ab PH |
629 | /* Issue an error if the size of an object of type T is unreasonable, |
630 | i.e. if it would be a bad idea to allocate a value of this type in | |
631 | GDB. */ | |
632 | ||
633 | static void | |
634 | check_size (const struct type *type) | |
635 | { | |
636 | if (TYPE_LENGTH (type) > varsize_limit) | |
323e0a4a | 637 | error (_("object size is larger than varsize-limit")); |
714e53ab PH |
638 | } |
639 | ||
0963b4bd | 640 | /* Maximum value of a SIZE-byte signed integer type. */ |
4c4b4cd2 | 641 | static LONGEST |
c3e5cd34 | 642 | max_of_size (int size) |
4c4b4cd2 | 643 | { |
76a01679 | 644 | LONGEST top_bit = (LONGEST) 1 << (size * 8 - 2); |
5b4ee69b | 645 | |
76a01679 | 646 | return top_bit | (top_bit - 1); |
4c4b4cd2 PH |
647 | } |
648 | ||
0963b4bd | 649 | /* Minimum value of a SIZE-byte signed integer type. */ |
4c4b4cd2 | 650 | static LONGEST |
c3e5cd34 | 651 | min_of_size (int size) |
4c4b4cd2 | 652 | { |
c3e5cd34 | 653 | return -max_of_size (size) - 1; |
4c4b4cd2 PH |
654 | } |
655 | ||
0963b4bd | 656 | /* Maximum value of a SIZE-byte unsigned integer type. */ |
4c4b4cd2 | 657 | static ULONGEST |
c3e5cd34 | 658 | umax_of_size (int size) |
4c4b4cd2 | 659 | { |
76a01679 | 660 | ULONGEST top_bit = (ULONGEST) 1 << (size * 8 - 1); |
5b4ee69b | 661 | |
76a01679 | 662 | return top_bit | (top_bit - 1); |
4c4b4cd2 PH |
663 | } |
664 | ||
0963b4bd | 665 | /* Maximum value of integral type T, as a signed quantity. */ |
c3e5cd34 PH |
666 | static LONGEST |
667 | max_of_type (struct type *t) | |
4c4b4cd2 | 668 | { |
c3e5cd34 PH |
669 | if (TYPE_UNSIGNED (t)) |
670 | return (LONGEST) umax_of_size (TYPE_LENGTH (t)); | |
671 | else | |
672 | return max_of_size (TYPE_LENGTH (t)); | |
673 | } | |
674 | ||
0963b4bd | 675 | /* Minimum value of integral type T, as a signed quantity. */ |
c3e5cd34 PH |
676 | static LONGEST |
677 | min_of_type (struct type *t) | |
678 | { | |
679 | if (TYPE_UNSIGNED (t)) | |
680 | return 0; | |
681 | else | |
682 | return min_of_size (TYPE_LENGTH (t)); | |
4c4b4cd2 PH |
683 | } |
684 | ||
685 | /* The largest value in the domain of TYPE, a discrete type, as an integer. */ | |
43bbcdc2 PH |
686 | LONGEST |
687 | ada_discrete_type_high_bound (struct type *type) | |
4c4b4cd2 | 688 | { |
76a01679 | 689 | switch (TYPE_CODE (type)) |
4c4b4cd2 PH |
690 | { |
691 | case TYPE_CODE_RANGE: | |
690cc4eb | 692 | return TYPE_HIGH_BOUND (type); |
4c4b4cd2 | 693 | case TYPE_CODE_ENUM: |
14e75d8e | 694 | return TYPE_FIELD_ENUMVAL (type, TYPE_NFIELDS (type) - 1); |
690cc4eb PH |
695 | case TYPE_CODE_BOOL: |
696 | return 1; | |
697 | case TYPE_CODE_CHAR: | |
76a01679 | 698 | case TYPE_CODE_INT: |
690cc4eb | 699 | return max_of_type (type); |
4c4b4cd2 | 700 | default: |
43bbcdc2 | 701 | error (_("Unexpected type in ada_discrete_type_high_bound.")); |
4c4b4cd2 PH |
702 | } |
703 | } | |
704 | ||
14e75d8e | 705 | /* The smallest value in the domain of TYPE, a discrete type, as an integer. */ |
43bbcdc2 PH |
706 | LONGEST |
707 | ada_discrete_type_low_bound (struct type *type) | |
4c4b4cd2 | 708 | { |
76a01679 | 709 | switch (TYPE_CODE (type)) |
4c4b4cd2 PH |
710 | { |
711 | case TYPE_CODE_RANGE: | |
690cc4eb | 712 | return TYPE_LOW_BOUND (type); |
4c4b4cd2 | 713 | case TYPE_CODE_ENUM: |
14e75d8e | 714 | return TYPE_FIELD_ENUMVAL (type, 0); |
690cc4eb PH |
715 | case TYPE_CODE_BOOL: |
716 | return 0; | |
717 | case TYPE_CODE_CHAR: | |
76a01679 | 718 | case TYPE_CODE_INT: |
690cc4eb | 719 | return min_of_type (type); |
4c4b4cd2 | 720 | default: |
43bbcdc2 | 721 | error (_("Unexpected type in ada_discrete_type_low_bound.")); |
4c4b4cd2 PH |
722 | } |
723 | } | |
724 | ||
725 | /* The identity on non-range types. For range types, the underlying | |
76a01679 | 726 | non-range scalar type. */ |
4c4b4cd2 PH |
727 | |
728 | static struct type * | |
18af8284 | 729 | get_base_type (struct type *type) |
4c4b4cd2 PH |
730 | { |
731 | while (type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE) | |
732 | { | |
76a01679 JB |
733 | if (type == TYPE_TARGET_TYPE (type) || TYPE_TARGET_TYPE (type) == NULL) |
734 | return type; | |
4c4b4cd2 PH |
735 | type = TYPE_TARGET_TYPE (type); |
736 | } | |
737 | return type; | |
14f9c5c9 | 738 | } |
41246937 JB |
739 | |
740 | /* Return a decoded version of the given VALUE. This means returning | |
741 | a value whose type is obtained by applying all the GNAT-specific | |
742 | encondings, making the resulting type a static but standard description | |
743 | of the initial type. */ | |
744 | ||
745 | struct value * | |
746 | ada_get_decoded_value (struct value *value) | |
747 | { | |
748 | struct type *type = ada_check_typedef (value_type (value)); | |
749 | ||
750 | if (ada_is_array_descriptor_type (type) | |
751 | || (ada_is_constrained_packed_array_type (type) | |
752 | && TYPE_CODE (type) != TYPE_CODE_PTR)) | |
753 | { | |
754 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) /* array access type. */ | |
755 | value = ada_coerce_to_simple_array_ptr (value); | |
756 | else | |
757 | value = ada_coerce_to_simple_array (value); | |
758 | } | |
759 | else | |
760 | value = ada_to_fixed_value (value); | |
761 | ||
762 | return value; | |
763 | } | |
764 | ||
765 | /* Same as ada_get_decoded_value, but with the given TYPE. | |
766 | Because there is no associated actual value for this type, | |
767 | the resulting type might be a best-effort approximation in | |
768 | the case of dynamic types. */ | |
769 | ||
770 | struct type * | |
771 | ada_get_decoded_type (struct type *type) | |
772 | { | |
773 | type = to_static_fixed_type (type); | |
774 | if (ada_is_constrained_packed_array_type (type)) | |
775 | type = ada_coerce_to_simple_array_type (type); | |
776 | return type; | |
777 | } | |
778 | ||
4c4b4cd2 | 779 | \f |
76a01679 | 780 | |
4c4b4cd2 | 781 | /* Language Selection */ |
14f9c5c9 AS |
782 | |
783 | /* If the main program is in Ada, return language_ada, otherwise return LANG | |
ccefe4c4 | 784 | (the main program is in Ada iif the adainit symbol is found). */ |
d2e4a39e | 785 | |
14f9c5c9 | 786 | enum language |
ccefe4c4 | 787 | ada_update_initial_language (enum language lang) |
14f9c5c9 | 788 | { |
d2e4a39e | 789 | if (lookup_minimal_symbol ("adainit", (const char *) NULL, |
4c4b4cd2 PH |
790 | (struct objfile *) NULL) != NULL) |
791 | return language_ada; | |
14f9c5c9 AS |
792 | |
793 | return lang; | |
794 | } | |
96d887e8 PH |
795 | |
796 | /* If the main procedure is written in Ada, then return its name. | |
797 | The result is good until the next call. Return NULL if the main | |
798 | procedure doesn't appear to be in Ada. */ | |
799 | ||
800 | char * | |
801 | ada_main_name (void) | |
802 | { | |
803 | struct minimal_symbol *msym; | |
f9bc20b9 | 804 | static char *main_program_name = NULL; |
6c038f32 | 805 | |
96d887e8 PH |
806 | /* For Ada, the name of the main procedure is stored in a specific |
807 | string constant, generated by the binder. Look for that symbol, | |
808 | extract its address, and then read that string. If we didn't find | |
809 | that string, then most probably the main procedure is not written | |
810 | in Ada. */ | |
811 | msym = lookup_minimal_symbol (ADA_MAIN_PROGRAM_SYMBOL_NAME, NULL, NULL); | |
812 | ||
813 | if (msym != NULL) | |
814 | { | |
f9bc20b9 JB |
815 | CORE_ADDR main_program_name_addr; |
816 | int err_code; | |
817 | ||
96d887e8 PH |
818 | main_program_name_addr = SYMBOL_VALUE_ADDRESS (msym); |
819 | if (main_program_name_addr == 0) | |
323e0a4a | 820 | error (_("Invalid address for Ada main program name.")); |
96d887e8 | 821 | |
f9bc20b9 JB |
822 | xfree (main_program_name); |
823 | target_read_string (main_program_name_addr, &main_program_name, | |
824 | 1024, &err_code); | |
825 | ||
826 | if (err_code != 0) | |
827 | return NULL; | |
96d887e8 PH |
828 | return main_program_name; |
829 | } | |
830 | ||
831 | /* The main procedure doesn't seem to be in Ada. */ | |
832 | return NULL; | |
833 | } | |
14f9c5c9 | 834 | \f |
4c4b4cd2 | 835 | /* Symbols */ |
d2e4a39e | 836 | |
4c4b4cd2 PH |
837 | /* Table of Ada operators and their GNAT-encoded names. Last entry is pair |
838 | of NULLs. */ | |
14f9c5c9 | 839 | |
d2e4a39e AS |
840 | const struct ada_opname_map ada_opname_table[] = { |
841 | {"Oadd", "\"+\"", BINOP_ADD}, | |
842 | {"Osubtract", "\"-\"", BINOP_SUB}, | |
843 | {"Omultiply", "\"*\"", BINOP_MUL}, | |
844 | {"Odivide", "\"/\"", BINOP_DIV}, | |
845 | {"Omod", "\"mod\"", BINOP_MOD}, | |
846 | {"Orem", "\"rem\"", BINOP_REM}, | |
847 | {"Oexpon", "\"**\"", BINOP_EXP}, | |
848 | {"Olt", "\"<\"", BINOP_LESS}, | |
849 | {"Ole", "\"<=\"", BINOP_LEQ}, | |
850 | {"Ogt", "\">\"", BINOP_GTR}, | |
851 | {"Oge", "\">=\"", BINOP_GEQ}, | |
852 | {"Oeq", "\"=\"", BINOP_EQUAL}, | |
853 | {"One", "\"/=\"", BINOP_NOTEQUAL}, | |
854 | {"Oand", "\"and\"", BINOP_BITWISE_AND}, | |
855 | {"Oor", "\"or\"", BINOP_BITWISE_IOR}, | |
856 | {"Oxor", "\"xor\"", BINOP_BITWISE_XOR}, | |
857 | {"Oconcat", "\"&\"", BINOP_CONCAT}, | |
858 | {"Oabs", "\"abs\"", UNOP_ABS}, | |
859 | {"Onot", "\"not\"", UNOP_LOGICAL_NOT}, | |
860 | {"Oadd", "\"+\"", UNOP_PLUS}, | |
861 | {"Osubtract", "\"-\"", UNOP_NEG}, | |
862 | {NULL, NULL} | |
14f9c5c9 AS |
863 | }; |
864 | ||
4c4b4cd2 PH |
865 | /* The "encoded" form of DECODED, according to GNAT conventions. |
866 | The result is valid until the next call to ada_encode. */ | |
867 | ||
14f9c5c9 | 868 | char * |
4c4b4cd2 | 869 | ada_encode (const char *decoded) |
14f9c5c9 | 870 | { |
4c4b4cd2 PH |
871 | static char *encoding_buffer = NULL; |
872 | static size_t encoding_buffer_size = 0; | |
d2e4a39e | 873 | const char *p; |
14f9c5c9 | 874 | int k; |
d2e4a39e | 875 | |
4c4b4cd2 | 876 | if (decoded == NULL) |
14f9c5c9 AS |
877 | return NULL; |
878 | ||
4c4b4cd2 PH |
879 | GROW_VECT (encoding_buffer, encoding_buffer_size, |
880 | 2 * strlen (decoded) + 10); | |
14f9c5c9 AS |
881 | |
882 | k = 0; | |
4c4b4cd2 | 883 | for (p = decoded; *p != '\0'; p += 1) |
14f9c5c9 | 884 | { |
cdc7bb92 | 885 | if (*p == '.') |
4c4b4cd2 PH |
886 | { |
887 | encoding_buffer[k] = encoding_buffer[k + 1] = '_'; | |
888 | k += 2; | |
889 | } | |
14f9c5c9 | 890 | else if (*p == '"') |
4c4b4cd2 PH |
891 | { |
892 | const struct ada_opname_map *mapping; | |
893 | ||
894 | for (mapping = ada_opname_table; | |
1265e4aa JB |
895 | mapping->encoded != NULL |
896 | && strncmp (mapping->decoded, p, | |
897 | strlen (mapping->decoded)) != 0; mapping += 1) | |
4c4b4cd2 PH |
898 | ; |
899 | if (mapping->encoded == NULL) | |
323e0a4a | 900 | error (_("invalid Ada operator name: %s"), p); |
4c4b4cd2 PH |
901 | strcpy (encoding_buffer + k, mapping->encoded); |
902 | k += strlen (mapping->encoded); | |
903 | break; | |
904 | } | |
d2e4a39e | 905 | else |
4c4b4cd2 PH |
906 | { |
907 | encoding_buffer[k] = *p; | |
908 | k += 1; | |
909 | } | |
14f9c5c9 AS |
910 | } |
911 | ||
4c4b4cd2 PH |
912 | encoding_buffer[k] = '\0'; |
913 | return encoding_buffer; | |
14f9c5c9 AS |
914 | } |
915 | ||
916 | /* Return NAME folded to lower case, or, if surrounded by single | |
4c4b4cd2 PH |
917 | quotes, unfolded, but with the quotes stripped away. Result good |
918 | to next call. */ | |
919 | ||
d2e4a39e AS |
920 | char * |
921 | ada_fold_name (const char *name) | |
14f9c5c9 | 922 | { |
d2e4a39e | 923 | static char *fold_buffer = NULL; |
14f9c5c9 AS |
924 | static size_t fold_buffer_size = 0; |
925 | ||
926 | int len = strlen (name); | |
d2e4a39e | 927 | GROW_VECT (fold_buffer, fold_buffer_size, len + 1); |
14f9c5c9 AS |
928 | |
929 | if (name[0] == '\'') | |
930 | { | |
d2e4a39e AS |
931 | strncpy (fold_buffer, name + 1, len - 2); |
932 | fold_buffer[len - 2] = '\000'; | |
14f9c5c9 AS |
933 | } |
934 | else | |
935 | { | |
936 | int i; | |
5b4ee69b | 937 | |
14f9c5c9 | 938 | for (i = 0; i <= len; i += 1) |
4c4b4cd2 | 939 | fold_buffer[i] = tolower (name[i]); |
14f9c5c9 AS |
940 | } |
941 | ||
942 | return fold_buffer; | |
943 | } | |
944 | ||
529cad9c PH |
945 | /* Return nonzero if C is either a digit or a lowercase alphabet character. */ |
946 | ||
947 | static int | |
948 | is_lower_alphanum (const char c) | |
949 | { | |
950 | return (isdigit (c) || (isalpha (c) && islower (c))); | |
951 | } | |
952 | ||
c90092fe JB |
953 | /* ENCODED is the linkage name of a symbol and LEN contains its length. |
954 | This function saves in LEN the length of that same symbol name but | |
955 | without either of these suffixes: | |
29480c32 JB |
956 | . .{DIGIT}+ |
957 | . ${DIGIT}+ | |
958 | . ___{DIGIT}+ | |
959 | . __{DIGIT}+. | |
c90092fe | 960 | |
29480c32 JB |
961 | These are suffixes introduced by the compiler for entities such as |
962 | nested subprogram for instance, in order to avoid name clashes. | |
963 | They do not serve any purpose for the debugger. */ | |
964 | ||
965 | static void | |
966 | ada_remove_trailing_digits (const char *encoded, int *len) | |
967 | { | |
968 | if (*len > 1 && isdigit (encoded[*len - 1])) | |
969 | { | |
970 | int i = *len - 2; | |
5b4ee69b | 971 | |
29480c32 JB |
972 | while (i > 0 && isdigit (encoded[i])) |
973 | i--; | |
974 | if (i >= 0 && encoded[i] == '.') | |
975 | *len = i; | |
976 | else if (i >= 0 && encoded[i] == '$') | |
977 | *len = i; | |
978 | else if (i >= 2 && strncmp (encoded + i - 2, "___", 3) == 0) | |
979 | *len = i - 2; | |
980 | else if (i >= 1 && strncmp (encoded + i - 1, "__", 2) == 0) | |
981 | *len = i - 1; | |
982 | } | |
983 | } | |
984 | ||
985 | /* Remove the suffix introduced by the compiler for protected object | |
986 | subprograms. */ | |
987 | ||
988 | static void | |
989 | ada_remove_po_subprogram_suffix (const char *encoded, int *len) | |
990 | { | |
991 | /* Remove trailing N. */ | |
992 | ||
993 | /* Protected entry subprograms are broken into two | |
994 | separate subprograms: The first one is unprotected, and has | |
995 | a 'N' suffix; the second is the protected version, and has | |
0963b4bd | 996 | the 'P' suffix. The second calls the first one after handling |
29480c32 JB |
997 | the protection. Since the P subprograms are internally generated, |
998 | we leave these names undecoded, giving the user a clue that this | |
999 | entity is internal. */ | |
1000 | ||
1001 | if (*len > 1 | |
1002 | && encoded[*len - 1] == 'N' | |
1003 | && (isdigit (encoded[*len - 2]) || islower (encoded[*len - 2]))) | |
1004 | *len = *len - 1; | |
1005 | } | |
1006 | ||
69fadcdf JB |
1007 | /* Remove trailing X[bn]* suffixes (indicating names in package bodies). */ |
1008 | ||
1009 | static void | |
1010 | ada_remove_Xbn_suffix (const char *encoded, int *len) | |
1011 | { | |
1012 | int i = *len - 1; | |
1013 | ||
1014 | while (i > 0 && (encoded[i] == 'b' || encoded[i] == 'n')) | |
1015 | i--; | |
1016 | ||
1017 | if (encoded[i] != 'X') | |
1018 | return; | |
1019 | ||
1020 | if (i == 0) | |
1021 | return; | |
1022 | ||
1023 | if (isalnum (encoded[i-1])) | |
1024 | *len = i; | |
1025 | } | |
1026 | ||
29480c32 JB |
1027 | /* If ENCODED follows the GNAT entity encoding conventions, then return |
1028 | the decoded form of ENCODED. Otherwise, return "<%s>" where "%s" is | |
1029 | replaced by ENCODED. | |
14f9c5c9 | 1030 | |
4c4b4cd2 | 1031 | The resulting string is valid until the next call of ada_decode. |
29480c32 | 1032 | If the string is unchanged by decoding, the original string pointer |
4c4b4cd2 PH |
1033 | is returned. */ |
1034 | ||
1035 | const char * | |
1036 | ada_decode (const char *encoded) | |
14f9c5c9 AS |
1037 | { |
1038 | int i, j; | |
1039 | int len0; | |
d2e4a39e | 1040 | const char *p; |
4c4b4cd2 | 1041 | char *decoded; |
14f9c5c9 | 1042 | int at_start_name; |
4c4b4cd2 PH |
1043 | static char *decoding_buffer = NULL; |
1044 | static size_t decoding_buffer_size = 0; | |
d2e4a39e | 1045 | |
29480c32 JB |
1046 | /* The name of the Ada main procedure starts with "_ada_". |
1047 | This prefix is not part of the decoded name, so skip this part | |
1048 | if we see this prefix. */ | |
4c4b4cd2 PH |
1049 | if (strncmp (encoded, "_ada_", 5) == 0) |
1050 | encoded += 5; | |
14f9c5c9 | 1051 | |
29480c32 JB |
1052 | /* If the name starts with '_', then it is not a properly encoded |
1053 | name, so do not attempt to decode it. Similarly, if the name | |
1054 | starts with '<', the name should not be decoded. */ | |
4c4b4cd2 | 1055 | if (encoded[0] == '_' || encoded[0] == '<') |
14f9c5c9 AS |
1056 | goto Suppress; |
1057 | ||
4c4b4cd2 | 1058 | len0 = strlen (encoded); |
4c4b4cd2 | 1059 | |
29480c32 JB |
1060 | ada_remove_trailing_digits (encoded, &len0); |
1061 | ada_remove_po_subprogram_suffix (encoded, &len0); | |
529cad9c | 1062 | |
4c4b4cd2 PH |
1063 | /* Remove the ___X.* suffix if present. Do not forget to verify that |
1064 | the suffix is located before the current "end" of ENCODED. We want | |
1065 | to avoid re-matching parts of ENCODED that have previously been | |
1066 | marked as discarded (by decrementing LEN0). */ | |
1067 | p = strstr (encoded, "___"); | |
1068 | if (p != NULL && p - encoded < len0 - 3) | |
14f9c5c9 AS |
1069 | { |
1070 | if (p[3] == 'X') | |
4c4b4cd2 | 1071 | len0 = p - encoded; |
14f9c5c9 | 1072 | else |
4c4b4cd2 | 1073 | goto Suppress; |
14f9c5c9 | 1074 | } |
4c4b4cd2 | 1075 | |
29480c32 JB |
1076 | /* Remove any trailing TKB suffix. It tells us that this symbol |
1077 | is for the body of a task, but that information does not actually | |
1078 | appear in the decoded name. */ | |
1079 | ||
4c4b4cd2 | 1080 | if (len0 > 3 && strncmp (encoded + len0 - 3, "TKB", 3) == 0) |
14f9c5c9 | 1081 | len0 -= 3; |
76a01679 | 1082 | |
a10967fa JB |
1083 | /* Remove any trailing TB suffix. The TB suffix is slightly different |
1084 | from the TKB suffix because it is used for non-anonymous task | |
1085 | bodies. */ | |
1086 | ||
1087 | if (len0 > 2 && strncmp (encoded + len0 - 2, "TB", 2) == 0) | |
1088 | len0 -= 2; | |
1089 | ||
29480c32 JB |
1090 | /* Remove trailing "B" suffixes. */ |
1091 | /* FIXME: brobecker/2006-04-19: Not sure what this are used for... */ | |
1092 | ||
4c4b4cd2 | 1093 | if (len0 > 1 && strncmp (encoded + len0 - 1, "B", 1) == 0) |
14f9c5c9 AS |
1094 | len0 -= 1; |
1095 | ||
4c4b4cd2 | 1096 | /* Make decoded big enough for possible expansion by operator name. */ |
29480c32 | 1097 | |
4c4b4cd2 PH |
1098 | GROW_VECT (decoding_buffer, decoding_buffer_size, 2 * len0 + 1); |
1099 | decoded = decoding_buffer; | |
14f9c5c9 | 1100 | |
29480c32 JB |
1101 | /* Remove trailing __{digit}+ or trailing ${digit}+. */ |
1102 | ||
4c4b4cd2 | 1103 | if (len0 > 1 && isdigit (encoded[len0 - 1])) |
d2e4a39e | 1104 | { |
4c4b4cd2 PH |
1105 | i = len0 - 2; |
1106 | while ((i >= 0 && isdigit (encoded[i])) | |
1107 | || (i >= 1 && encoded[i] == '_' && isdigit (encoded[i - 1]))) | |
1108 | i -= 1; | |
1109 | if (i > 1 && encoded[i] == '_' && encoded[i - 1] == '_') | |
1110 | len0 = i - 1; | |
1111 | else if (encoded[i] == '$') | |
1112 | len0 = i; | |
d2e4a39e | 1113 | } |
14f9c5c9 | 1114 | |
29480c32 JB |
1115 | /* The first few characters that are not alphabetic are not part |
1116 | of any encoding we use, so we can copy them over verbatim. */ | |
1117 | ||
4c4b4cd2 PH |
1118 | for (i = 0, j = 0; i < len0 && !isalpha (encoded[i]); i += 1, j += 1) |
1119 | decoded[j] = encoded[i]; | |
14f9c5c9 AS |
1120 | |
1121 | at_start_name = 1; | |
1122 | while (i < len0) | |
1123 | { | |
29480c32 | 1124 | /* Is this a symbol function? */ |
4c4b4cd2 PH |
1125 | if (at_start_name && encoded[i] == 'O') |
1126 | { | |
1127 | int k; | |
5b4ee69b | 1128 | |
4c4b4cd2 PH |
1129 | for (k = 0; ada_opname_table[k].encoded != NULL; k += 1) |
1130 | { | |
1131 | int op_len = strlen (ada_opname_table[k].encoded); | |
06d5cf63 JB |
1132 | if ((strncmp (ada_opname_table[k].encoded + 1, encoded + i + 1, |
1133 | op_len - 1) == 0) | |
1134 | && !isalnum (encoded[i + op_len])) | |
4c4b4cd2 PH |
1135 | { |
1136 | strcpy (decoded + j, ada_opname_table[k].decoded); | |
1137 | at_start_name = 0; | |
1138 | i += op_len; | |
1139 | j += strlen (ada_opname_table[k].decoded); | |
1140 | break; | |
1141 | } | |
1142 | } | |
1143 | if (ada_opname_table[k].encoded != NULL) | |
1144 | continue; | |
1145 | } | |
14f9c5c9 AS |
1146 | at_start_name = 0; |
1147 | ||
529cad9c PH |
1148 | /* Replace "TK__" with "__", which will eventually be translated |
1149 | into "." (just below). */ | |
1150 | ||
4c4b4cd2 PH |
1151 | if (i < len0 - 4 && strncmp (encoded + i, "TK__", 4) == 0) |
1152 | i += 2; | |
529cad9c | 1153 | |
29480c32 JB |
1154 | /* Replace "__B_{DIGITS}+__" sequences by "__", which will eventually |
1155 | be translated into "." (just below). These are internal names | |
1156 | generated for anonymous blocks inside which our symbol is nested. */ | |
1157 | ||
1158 | if (len0 - i > 5 && encoded [i] == '_' && encoded [i+1] == '_' | |
1159 | && encoded [i+2] == 'B' && encoded [i+3] == '_' | |
1160 | && isdigit (encoded [i+4])) | |
1161 | { | |
1162 | int k = i + 5; | |
1163 | ||
1164 | while (k < len0 && isdigit (encoded[k])) | |
1165 | k++; /* Skip any extra digit. */ | |
1166 | ||
1167 | /* Double-check that the "__B_{DIGITS}+" sequence we found | |
1168 | is indeed followed by "__". */ | |
1169 | if (len0 - k > 2 && encoded [k] == '_' && encoded [k+1] == '_') | |
1170 | i = k; | |
1171 | } | |
1172 | ||
529cad9c PH |
1173 | /* Remove _E{DIGITS}+[sb] */ |
1174 | ||
1175 | /* Just as for protected object subprograms, there are 2 categories | |
0963b4bd | 1176 | of subprograms created by the compiler for each entry. The first |
529cad9c PH |
1177 | one implements the actual entry code, and has a suffix following |
1178 | the convention above; the second one implements the barrier and | |
1179 | uses the same convention as above, except that the 'E' is replaced | |
1180 | by a 'B'. | |
1181 | ||
1182 | Just as above, we do not decode the name of barrier functions | |
1183 | to give the user a clue that the code he is debugging has been | |
1184 | internally generated. */ | |
1185 | ||
1186 | if (len0 - i > 3 && encoded [i] == '_' && encoded[i+1] == 'E' | |
1187 | && isdigit (encoded[i+2])) | |
1188 | { | |
1189 | int k = i + 3; | |
1190 | ||
1191 | while (k < len0 && isdigit (encoded[k])) | |
1192 | k++; | |
1193 | ||
1194 | if (k < len0 | |
1195 | && (encoded[k] == 'b' || encoded[k] == 's')) | |
1196 | { | |
1197 | k++; | |
1198 | /* Just as an extra precaution, make sure that if this | |
1199 | suffix is followed by anything else, it is a '_'. | |
1200 | Otherwise, we matched this sequence by accident. */ | |
1201 | if (k == len0 | |
1202 | || (k < len0 && encoded[k] == '_')) | |
1203 | i = k; | |
1204 | } | |
1205 | } | |
1206 | ||
1207 | /* Remove trailing "N" in [a-z0-9]+N__. The N is added by | |
1208 | the GNAT front-end in protected object subprograms. */ | |
1209 | ||
1210 | if (i < len0 + 3 | |
1211 | && encoded[i] == 'N' && encoded[i+1] == '_' && encoded[i+2] == '_') | |
1212 | { | |
1213 | /* Backtrack a bit up until we reach either the begining of | |
1214 | the encoded name, or "__". Make sure that we only find | |
1215 | digits or lowercase characters. */ | |
1216 | const char *ptr = encoded + i - 1; | |
1217 | ||
1218 | while (ptr >= encoded && is_lower_alphanum (ptr[0])) | |
1219 | ptr--; | |
1220 | if (ptr < encoded | |
1221 | || (ptr > encoded && ptr[0] == '_' && ptr[-1] == '_')) | |
1222 | i++; | |
1223 | } | |
1224 | ||
4c4b4cd2 PH |
1225 | if (encoded[i] == 'X' && i != 0 && isalnum (encoded[i - 1])) |
1226 | { | |
29480c32 JB |
1227 | /* This is a X[bn]* sequence not separated from the previous |
1228 | part of the name with a non-alpha-numeric character (in other | |
1229 | words, immediately following an alpha-numeric character), then | |
1230 | verify that it is placed at the end of the encoded name. If | |
1231 | not, then the encoding is not valid and we should abort the | |
1232 | decoding. Otherwise, just skip it, it is used in body-nested | |
1233 | package names. */ | |
4c4b4cd2 PH |
1234 | do |
1235 | i += 1; | |
1236 | while (i < len0 && (encoded[i] == 'b' || encoded[i] == 'n')); | |
1237 | if (i < len0) | |
1238 | goto Suppress; | |
1239 | } | |
cdc7bb92 | 1240 | else if (i < len0 - 2 && encoded[i] == '_' && encoded[i + 1] == '_') |
4c4b4cd2 | 1241 | { |
29480c32 | 1242 | /* Replace '__' by '.'. */ |
4c4b4cd2 PH |
1243 | decoded[j] = '.'; |
1244 | at_start_name = 1; | |
1245 | i += 2; | |
1246 | j += 1; | |
1247 | } | |
14f9c5c9 | 1248 | else |
4c4b4cd2 | 1249 | { |
29480c32 JB |
1250 | /* It's a character part of the decoded name, so just copy it |
1251 | over. */ | |
4c4b4cd2 PH |
1252 | decoded[j] = encoded[i]; |
1253 | i += 1; | |
1254 | j += 1; | |
1255 | } | |
14f9c5c9 | 1256 | } |
4c4b4cd2 | 1257 | decoded[j] = '\000'; |
14f9c5c9 | 1258 | |
29480c32 JB |
1259 | /* Decoded names should never contain any uppercase character. |
1260 | Double-check this, and abort the decoding if we find one. */ | |
1261 | ||
4c4b4cd2 PH |
1262 | for (i = 0; decoded[i] != '\0'; i += 1) |
1263 | if (isupper (decoded[i]) || decoded[i] == ' ') | |
14f9c5c9 AS |
1264 | goto Suppress; |
1265 | ||
4c4b4cd2 PH |
1266 | if (strcmp (decoded, encoded) == 0) |
1267 | return encoded; | |
1268 | else | |
1269 | return decoded; | |
14f9c5c9 AS |
1270 | |
1271 | Suppress: | |
4c4b4cd2 PH |
1272 | GROW_VECT (decoding_buffer, decoding_buffer_size, strlen (encoded) + 3); |
1273 | decoded = decoding_buffer; | |
1274 | if (encoded[0] == '<') | |
1275 | strcpy (decoded, encoded); | |
14f9c5c9 | 1276 | else |
88c15c34 | 1277 | xsnprintf (decoded, decoding_buffer_size, "<%s>", encoded); |
4c4b4cd2 PH |
1278 | return decoded; |
1279 | ||
1280 | } | |
1281 | ||
1282 | /* Table for keeping permanent unique copies of decoded names. Once | |
1283 | allocated, names in this table are never released. While this is a | |
1284 | storage leak, it should not be significant unless there are massive | |
1285 | changes in the set of decoded names in successive versions of a | |
1286 | symbol table loaded during a single session. */ | |
1287 | static struct htab *decoded_names_store; | |
1288 | ||
1289 | /* Returns the decoded name of GSYMBOL, as for ada_decode, caching it | |
1290 | in the language-specific part of GSYMBOL, if it has not been | |
1291 | previously computed. Tries to save the decoded name in the same | |
1292 | obstack as GSYMBOL, if possible, and otherwise on the heap (so that, | |
1293 | in any case, the decoded symbol has a lifetime at least that of | |
0963b4bd | 1294 | GSYMBOL). |
4c4b4cd2 PH |
1295 | The GSYMBOL parameter is "mutable" in the C++ sense: logically |
1296 | const, but nevertheless modified to a semantically equivalent form | |
0963b4bd | 1297 | when a decoded name is cached in it. */ |
4c4b4cd2 | 1298 | |
45e6c716 | 1299 | const char * |
76a01679 | 1300 | ada_decode_symbol (const struct general_symbol_info *gsymbol) |
4c4b4cd2 | 1301 | { |
45e6c716 TT |
1302 | const char **resultp = |
1303 | (const char **) &gsymbol->language_specific.mangled_lang.demangled_name; | |
5b4ee69b | 1304 | |
4c4b4cd2 PH |
1305 | if (*resultp == NULL) |
1306 | { | |
1307 | const char *decoded = ada_decode (gsymbol->name); | |
5b4ee69b | 1308 | |
714835d5 | 1309 | if (gsymbol->obj_section != NULL) |
76a01679 | 1310 | { |
714835d5 | 1311 | struct objfile *objf = gsymbol->obj_section->objfile; |
5b4ee69b | 1312 | |
10f0c4bb TT |
1313 | *resultp = obstack_copy0 (&objf->objfile_obstack, |
1314 | decoded, strlen (decoded)); | |
76a01679 | 1315 | } |
4c4b4cd2 | 1316 | /* Sometimes, we can't find a corresponding objfile, in which |
76a01679 JB |
1317 | case, we put the result on the heap. Since we only decode |
1318 | when needed, we hope this usually does not cause a | |
1319 | significant memory leak (FIXME). */ | |
4c4b4cd2 | 1320 | if (*resultp == NULL) |
76a01679 JB |
1321 | { |
1322 | char **slot = (char **) htab_find_slot (decoded_names_store, | |
1323 | decoded, INSERT); | |
5b4ee69b | 1324 | |
76a01679 JB |
1325 | if (*slot == NULL) |
1326 | *slot = xstrdup (decoded); | |
1327 | *resultp = *slot; | |
1328 | } | |
4c4b4cd2 | 1329 | } |
14f9c5c9 | 1330 | |
4c4b4cd2 PH |
1331 | return *resultp; |
1332 | } | |
76a01679 | 1333 | |
2c0b251b | 1334 | static char * |
76a01679 | 1335 | ada_la_decode (const char *encoded, int options) |
4c4b4cd2 PH |
1336 | { |
1337 | return xstrdup (ada_decode (encoded)); | |
14f9c5c9 AS |
1338 | } |
1339 | ||
1340 | /* Returns non-zero iff SYM_NAME matches NAME, ignoring any trailing | |
4c4b4cd2 PH |
1341 | suffixes that encode debugging information or leading _ada_ on |
1342 | SYM_NAME (see is_name_suffix commentary for the debugging | |
1343 | information that is ignored). If WILD, then NAME need only match a | |
1344 | suffix of SYM_NAME minus the same suffixes. Also returns 0 if | |
1345 | either argument is NULL. */ | |
14f9c5c9 | 1346 | |
2c0b251b | 1347 | static int |
40658b94 | 1348 | match_name (const char *sym_name, const char *name, int wild) |
14f9c5c9 AS |
1349 | { |
1350 | if (sym_name == NULL || name == NULL) | |
1351 | return 0; | |
1352 | else if (wild) | |
73589123 | 1353 | return wild_match (sym_name, name) == 0; |
d2e4a39e AS |
1354 | else |
1355 | { | |
1356 | int len_name = strlen (name); | |
5b4ee69b | 1357 | |
4c4b4cd2 PH |
1358 | return (strncmp (sym_name, name, len_name) == 0 |
1359 | && is_name_suffix (sym_name + len_name)) | |
1360 | || (strncmp (sym_name, "_ada_", 5) == 0 | |
1361 | && strncmp (sym_name + 5, name, len_name) == 0 | |
1362 | && is_name_suffix (sym_name + len_name + 5)); | |
d2e4a39e | 1363 | } |
14f9c5c9 | 1364 | } |
14f9c5c9 | 1365 | \f |
d2e4a39e | 1366 | |
4c4b4cd2 | 1367 | /* Arrays */ |
14f9c5c9 | 1368 | |
28c85d6c JB |
1369 | /* Assuming that INDEX_DESC_TYPE is an ___XA structure, a structure |
1370 | generated by the GNAT compiler to describe the index type used | |
1371 | for each dimension of an array, check whether it follows the latest | |
1372 | known encoding. If not, fix it up to conform to the latest encoding. | |
1373 | Otherwise, do nothing. This function also does nothing if | |
1374 | INDEX_DESC_TYPE is NULL. | |
1375 | ||
1376 | The GNAT encoding used to describle the array index type evolved a bit. | |
1377 | Initially, the information would be provided through the name of each | |
1378 | field of the structure type only, while the type of these fields was | |
1379 | described as unspecified and irrelevant. The debugger was then expected | |
1380 | to perform a global type lookup using the name of that field in order | |
1381 | to get access to the full index type description. Because these global | |
1382 | lookups can be very expensive, the encoding was later enhanced to make | |
1383 | the global lookup unnecessary by defining the field type as being | |
1384 | the full index type description. | |
1385 | ||
1386 | The purpose of this routine is to allow us to support older versions | |
1387 | of the compiler by detecting the use of the older encoding, and by | |
1388 | fixing up the INDEX_DESC_TYPE to follow the new one (at this point, | |
1389 | we essentially replace each field's meaningless type by the associated | |
1390 | index subtype). */ | |
1391 | ||
1392 | void | |
1393 | ada_fixup_array_indexes_type (struct type *index_desc_type) | |
1394 | { | |
1395 | int i; | |
1396 | ||
1397 | if (index_desc_type == NULL) | |
1398 | return; | |
1399 | gdb_assert (TYPE_NFIELDS (index_desc_type) > 0); | |
1400 | ||
1401 | /* Check if INDEX_DESC_TYPE follows the older encoding (it is sufficient | |
1402 | to check one field only, no need to check them all). If not, return | |
1403 | now. | |
1404 | ||
1405 | If our INDEX_DESC_TYPE was generated using the older encoding, | |
1406 | the field type should be a meaningless integer type whose name | |
1407 | is not equal to the field name. */ | |
1408 | if (TYPE_NAME (TYPE_FIELD_TYPE (index_desc_type, 0)) != NULL | |
1409 | && strcmp (TYPE_NAME (TYPE_FIELD_TYPE (index_desc_type, 0)), | |
1410 | TYPE_FIELD_NAME (index_desc_type, 0)) == 0) | |
1411 | return; | |
1412 | ||
1413 | /* Fixup each field of INDEX_DESC_TYPE. */ | |
1414 | for (i = 0; i < TYPE_NFIELDS (index_desc_type); i++) | |
1415 | { | |
0d5cff50 | 1416 | const char *name = TYPE_FIELD_NAME (index_desc_type, i); |
28c85d6c JB |
1417 | struct type *raw_type = ada_check_typedef (ada_find_any_type (name)); |
1418 | ||
1419 | if (raw_type) | |
1420 | TYPE_FIELD_TYPE (index_desc_type, i) = raw_type; | |
1421 | } | |
1422 | } | |
1423 | ||
4c4b4cd2 | 1424 | /* Names of MAX_ADA_DIMENS bounds in P_BOUNDS fields of array descriptors. */ |
14f9c5c9 | 1425 | |
d2e4a39e AS |
1426 | static char *bound_name[] = { |
1427 | "LB0", "UB0", "LB1", "UB1", "LB2", "UB2", "LB3", "UB3", | |
14f9c5c9 AS |
1428 | "LB4", "UB4", "LB5", "UB5", "LB6", "UB6", "LB7", "UB7" |
1429 | }; | |
1430 | ||
1431 | /* Maximum number of array dimensions we are prepared to handle. */ | |
1432 | ||
4c4b4cd2 | 1433 | #define MAX_ADA_DIMENS (sizeof(bound_name) / (2*sizeof(char *))) |
14f9c5c9 | 1434 | |
14f9c5c9 | 1435 | |
4c4b4cd2 PH |
1436 | /* The desc_* routines return primitive portions of array descriptors |
1437 | (fat pointers). */ | |
14f9c5c9 AS |
1438 | |
1439 | /* The descriptor or array type, if any, indicated by TYPE; removes | |
4c4b4cd2 PH |
1440 | level of indirection, if needed. */ |
1441 | ||
d2e4a39e AS |
1442 | static struct type * |
1443 | desc_base_type (struct type *type) | |
14f9c5c9 AS |
1444 | { |
1445 | if (type == NULL) | |
1446 | return NULL; | |
61ee279c | 1447 | type = ada_check_typedef (type); |
720d1a40 JB |
1448 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) |
1449 | type = ada_typedef_target_type (type); | |
1450 | ||
1265e4aa JB |
1451 | if (type != NULL |
1452 | && (TYPE_CODE (type) == TYPE_CODE_PTR | |
1453 | || TYPE_CODE (type) == TYPE_CODE_REF)) | |
61ee279c | 1454 | return ada_check_typedef (TYPE_TARGET_TYPE (type)); |
14f9c5c9 AS |
1455 | else |
1456 | return type; | |
1457 | } | |
1458 | ||
4c4b4cd2 PH |
1459 | /* True iff TYPE indicates a "thin" array pointer type. */ |
1460 | ||
14f9c5c9 | 1461 | static int |
d2e4a39e | 1462 | is_thin_pntr (struct type *type) |
14f9c5c9 | 1463 | { |
d2e4a39e | 1464 | return |
14f9c5c9 AS |
1465 | is_suffix (ada_type_name (desc_base_type (type)), "___XUT") |
1466 | || is_suffix (ada_type_name (desc_base_type (type)), "___XUT___XVE"); | |
1467 | } | |
1468 | ||
4c4b4cd2 PH |
1469 | /* The descriptor type for thin pointer type TYPE. */ |
1470 | ||
d2e4a39e AS |
1471 | static struct type * |
1472 | thin_descriptor_type (struct type *type) | |
14f9c5c9 | 1473 | { |
d2e4a39e | 1474 | struct type *base_type = desc_base_type (type); |
5b4ee69b | 1475 | |
14f9c5c9 AS |
1476 | if (base_type == NULL) |
1477 | return NULL; | |
1478 | if (is_suffix (ada_type_name (base_type), "___XVE")) | |
1479 | return base_type; | |
d2e4a39e | 1480 | else |
14f9c5c9 | 1481 | { |
d2e4a39e | 1482 | struct type *alt_type = ada_find_parallel_type (base_type, "___XVE"); |
5b4ee69b | 1483 | |
14f9c5c9 | 1484 | if (alt_type == NULL) |
4c4b4cd2 | 1485 | return base_type; |
14f9c5c9 | 1486 | else |
4c4b4cd2 | 1487 | return alt_type; |
14f9c5c9 AS |
1488 | } |
1489 | } | |
1490 | ||
4c4b4cd2 PH |
1491 | /* A pointer to the array data for thin-pointer value VAL. */ |
1492 | ||
d2e4a39e AS |
1493 | static struct value * |
1494 | thin_data_pntr (struct value *val) | |
14f9c5c9 | 1495 | { |
828292f2 | 1496 | struct type *type = ada_check_typedef (value_type (val)); |
556bdfd4 | 1497 | struct type *data_type = desc_data_target_type (thin_descriptor_type (type)); |
5b4ee69b | 1498 | |
556bdfd4 UW |
1499 | data_type = lookup_pointer_type (data_type); |
1500 | ||
14f9c5c9 | 1501 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
556bdfd4 | 1502 | return value_cast (data_type, value_copy (val)); |
d2e4a39e | 1503 | else |
42ae5230 | 1504 | return value_from_longest (data_type, value_address (val)); |
14f9c5c9 AS |
1505 | } |
1506 | ||
4c4b4cd2 PH |
1507 | /* True iff TYPE indicates a "thick" array pointer type. */ |
1508 | ||
14f9c5c9 | 1509 | static int |
d2e4a39e | 1510 | is_thick_pntr (struct type *type) |
14f9c5c9 AS |
1511 | { |
1512 | type = desc_base_type (type); | |
1513 | return (type != NULL && TYPE_CODE (type) == TYPE_CODE_STRUCT | |
4c4b4cd2 | 1514 | && lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL); |
14f9c5c9 AS |
1515 | } |
1516 | ||
4c4b4cd2 PH |
1517 | /* If TYPE is the type of an array descriptor (fat or thin pointer) or a |
1518 | pointer to one, the type of its bounds data; otherwise, NULL. */ | |
76a01679 | 1519 | |
d2e4a39e AS |
1520 | static struct type * |
1521 | desc_bounds_type (struct type *type) | |
14f9c5c9 | 1522 | { |
d2e4a39e | 1523 | struct type *r; |
14f9c5c9 AS |
1524 | |
1525 | type = desc_base_type (type); | |
1526 | ||
1527 | if (type == NULL) | |
1528 | return NULL; | |
1529 | else if (is_thin_pntr (type)) | |
1530 | { | |
1531 | type = thin_descriptor_type (type); | |
1532 | if (type == NULL) | |
4c4b4cd2 | 1533 | return NULL; |
14f9c5c9 AS |
1534 | r = lookup_struct_elt_type (type, "BOUNDS", 1); |
1535 | if (r != NULL) | |
61ee279c | 1536 | return ada_check_typedef (r); |
14f9c5c9 AS |
1537 | } |
1538 | else if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
1539 | { | |
1540 | r = lookup_struct_elt_type (type, "P_BOUNDS", 1); | |
1541 | if (r != NULL) | |
61ee279c | 1542 | return ada_check_typedef (TYPE_TARGET_TYPE (ada_check_typedef (r))); |
14f9c5c9 AS |
1543 | } |
1544 | return NULL; | |
1545 | } | |
1546 | ||
1547 | /* If ARR is an array descriptor (fat or thin pointer), or pointer to | |
4c4b4cd2 PH |
1548 | one, a pointer to its bounds data. Otherwise NULL. */ |
1549 | ||
d2e4a39e AS |
1550 | static struct value * |
1551 | desc_bounds (struct value *arr) | |
14f9c5c9 | 1552 | { |
df407dfe | 1553 | struct type *type = ada_check_typedef (value_type (arr)); |
5b4ee69b | 1554 | |
d2e4a39e | 1555 | if (is_thin_pntr (type)) |
14f9c5c9 | 1556 | { |
d2e4a39e | 1557 | struct type *bounds_type = |
4c4b4cd2 | 1558 | desc_bounds_type (thin_descriptor_type (type)); |
14f9c5c9 AS |
1559 | LONGEST addr; |
1560 | ||
4cdfadb1 | 1561 | if (bounds_type == NULL) |
323e0a4a | 1562 | error (_("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1563 | |
1564 | /* NOTE: The following calculation is not really kosher, but | |
d2e4a39e | 1565 | since desc_type is an XVE-encoded type (and shouldn't be), |
4c4b4cd2 | 1566 | the correct calculation is a real pain. FIXME (and fix GCC). */ |
14f9c5c9 | 1567 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
4c4b4cd2 | 1568 | addr = value_as_long (arr); |
d2e4a39e | 1569 | else |
42ae5230 | 1570 | addr = value_address (arr); |
14f9c5c9 | 1571 | |
d2e4a39e | 1572 | return |
4c4b4cd2 PH |
1573 | value_from_longest (lookup_pointer_type (bounds_type), |
1574 | addr - TYPE_LENGTH (bounds_type)); | |
14f9c5c9 AS |
1575 | } |
1576 | ||
1577 | else if (is_thick_pntr (type)) | |
05e522ef JB |
1578 | { |
1579 | struct value *p_bounds = value_struct_elt (&arr, NULL, "P_BOUNDS", NULL, | |
1580 | _("Bad GNAT array descriptor")); | |
1581 | struct type *p_bounds_type = value_type (p_bounds); | |
1582 | ||
1583 | if (p_bounds_type | |
1584 | && TYPE_CODE (p_bounds_type) == TYPE_CODE_PTR) | |
1585 | { | |
1586 | struct type *target_type = TYPE_TARGET_TYPE (p_bounds_type); | |
1587 | ||
1588 | if (TYPE_STUB (target_type)) | |
1589 | p_bounds = value_cast (lookup_pointer_type | |
1590 | (ada_check_typedef (target_type)), | |
1591 | p_bounds); | |
1592 | } | |
1593 | else | |
1594 | error (_("Bad GNAT array descriptor")); | |
1595 | ||
1596 | return p_bounds; | |
1597 | } | |
14f9c5c9 AS |
1598 | else |
1599 | return NULL; | |
1600 | } | |
1601 | ||
4c4b4cd2 PH |
1602 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit |
1603 | position of the field containing the address of the bounds data. */ | |
1604 | ||
14f9c5c9 | 1605 | static int |
d2e4a39e | 1606 | fat_pntr_bounds_bitpos (struct type *type) |
14f9c5c9 AS |
1607 | { |
1608 | return TYPE_FIELD_BITPOS (desc_base_type (type), 1); | |
1609 | } | |
1610 | ||
1611 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1612 | size of the field containing the address of the bounds data. */ |
1613 | ||
14f9c5c9 | 1614 | static int |
d2e4a39e | 1615 | fat_pntr_bounds_bitsize (struct type *type) |
14f9c5c9 AS |
1616 | { |
1617 | type = desc_base_type (type); | |
1618 | ||
d2e4a39e | 1619 | if (TYPE_FIELD_BITSIZE (type, 1) > 0) |
14f9c5c9 AS |
1620 | return TYPE_FIELD_BITSIZE (type, 1); |
1621 | else | |
61ee279c | 1622 | return 8 * TYPE_LENGTH (ada_check_typedef (TYPE_FIELD_TYPE (type, 1))); |
14f9c5c9 AS |
1623 | } |
1624 | ||
4c4b4cd2 | 1625 | /* If TYPE is the type of an array descriptor (fat or thin pointer) or a |
556bdfd4 UW |
1626 | pointer to one, the type of its array data (a array-with-no-bounds type); |
1627 | otherwise, NULL. Use ada_type_of_array to get an array type with bounds | |
1628 | data. */ | |
4c4b4cd2 | 1629 | |
d2e4a39e | 1630 | static struct type * |
556bdfd4 | 1631 | desc_data_target_type (struct type *type) |
14f9c5c9 AS |
1632 | { |
1633 | type = desc_base_type (type); | |
1634 | ||
4c4b4cd2 | 1635 | /* NOTE: The following is bogus; see comment in desc_bounds. */ |
14f9c5c9 | 1636 | if (is_thin_pntr (type)) |
556bdfd4 | 1637 | return desc_base_type (TYPE_FIELD_TYPE (thin_descriptor_type (type), 1)); |
14f9c5c9 | 1638 | else if (is_thick_pntr (type)) |
556bdfd4 UW |
1639 | { |
1640 | struct type *data_type = lookup_struct_elt_type (type, "P_ARRAY", 1); | |
1641 | ||
1642 | if (data_type | |
1643 | && TYPE_CODE (ada_check_typedef (data_type)) == TYPE_CODE_PTR) | |
05e522ef | 1644 | return ada_check_typedef (TYPE_TARGET_TYPE (data_type)); |
556bdfd4 UW |
1645 | } |
1646 | ||
1647 | return NULL; | |
14f9c5c9 AS |
1648 | } |
1649 | ||
1650 | /* If ARR is an array descriptor (fat or thin pointer), a pointer to | |
1651 | its array data. */ | |
4c4b4cd2 | 1652 | |
d2e4a39e AS |
1653 | static struct value * |
1654 | desc_data (struct value *arr) | |
14f9c5c9 | 1655 | { |
df407dfe | 1656 | struct type *type = value_type (arr); |
5b4ee69b | 1657 | |
14f9c5c9 AS |
1658 | if (is_thin_pntr (type)) |
1659 | return thin_data_pntr (arr); | |
1660 | else if (is_thick_pntr (type)) | |
d2e4a39e | 1661 | return value_struct_elt (&arr, NULL, "P_ARRAY", NULL, |
323e0a4a | 1662 | _("Bad GNAT array descriptor")); |
14f9c5c9 AS |
1663 | else |
1664 | return NULL; | |
1665 | } | |
1666 | ||
1667 | ||
1668 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1669 | position of the field containing the address of the data. */ |
1670 | ||
14f9c5c9 | 1671 | static int |
d2e4a39e | 1672 | fat_pntr_data_bitpos (struct type *type) |
14f9c5c9 AS |
1673 | { |
1674 | return TYPE_FIELD_BITPOS (desc_base_type (type), 0); | |
1675 | } | |
1676 | ||
1677 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1678 | size of the field containing the address of the data. */ |
1679 | ||
14f9c5c9 | 1680 | static int |
d2e4a39e | 1681 | fat_pntr_data_bitsize (struct type *type) |
14f9c5c9 AS |
1682 | { |
1683 | type = desc_base_type (type); | |
1684 | ||
1685 | if (TYPE_FIELD_BITSIZE (type, 0) > 0) | |
1686 | return TYPE_FIELD_BITSIZE (type, 0); | |
d2e4a39e | 1687 | else |
14f9c5c9 AS |
1688 | return TARGET_CHAR_BIT * TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)); |
1689 | } | |
1690 | ||
4c4b4cd2 | 1691 | /* If BOUNDS is an array-bounds structure (or pointer to one), return |
14f9c5c9 | 1692 | the Ith lower bound stored in it, if WHICH is 0, and the Ith upper |
4c4b4cd2 PH |
1693 | bound, if WHICH is 1. The first bound is I=1. */ |
1694 | ||
d2e4a39e AS |
1695 | static struct value * |
1696 | desc_one_bound (struct value *bounds, int i, int which) | |
14f9c5c9 | 1697 | { |
d2e4a39e | 1698 | return value_struct_elt (&bounds, NULL, bound_name[2 * i + which - 2], NULL, |
323e0a4a | 1699 | _("Bad GNAT array descriptor bounds")); |
14f9c5c9 AS |
1700 | } |
1701 | ||
1702 | /* If BOUNDS is an array-bounds structure type, return the bit position | |
1703 | of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper | |
4c4b4cd2 PH |
1704 | bound, if WHICH is 1. The first bound is I=1. */ |
1705 | ||
14f9c5c9 | 1706 | static int |
d2e4a39e | 1707 | desc_bound_bitpos (struct type *type, int i, int which) |
14f9c5c9 | 1708 | { |
d2e4a39e | 1709 | return TYPE_FIELD_BITPOS (desc_base_type (type), 2 * i + which - 2); |
14f9c5c9 AS |
1710 | } |
1711 | ||
1712 | /* If BOUNDS is an array-bounds structure type, return the bit field size | |
1713 | of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper | |
4c4b4cd2 PH |
1714 | bound, if WHICH is 1. The first bound is I=1. */ |
1715 | ||
76a01679 | 1716 | static int |
d2e4a39e | 1717 | desc_bound_bitsize (struct type *type, int i, int which) |
14f9c5c9 AS |
1718 | { |
1719 | type = desc_base_type (type); | |
1720 | ||
d2e4a39e AS |
1721 | if (TYPE_FIELD_BITSIZE (type, 2 * i + which - 2) > 0) |
1722 | return TYPE_FIELD_BITSIZE (type, 2 * i + which - 2); | |
1723 | else | |
1724 | return 8 * TYPE_LENGTH (TYPE_FIELD_TYPE (type, 2 * i + which - 2)); | |
14f9c5c9 AS |
1725 | } |
1726 | ||
1727 | /* If TYPE is the type of an array-bounds structure, the type of its | |
4c4b4cd2 PH |
1728 | Ith bound (numbering from 1). Otherwise, NULL. */ |
1729 | ||
d2e4a39e AS |
1730 | static struct type * |
1731 | desc_index_type (struct type *type, int i) | |
14f9c5c9 AS |
1732 | { |
1733 | type = desc_base_type (type); | |
1734 | ||
1735 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
d2e4a39e AS |
1736 | return lookup_struct_elt_type (type, bound_name[2 * i - 2], 1); |
1737 | else | |
14f9c5c9 AS |
1738 | return NULL; |
1739 | } | |
1740 | ||
4c4b4cd2 PH |
1741 | /* The number of index positions in the array-bounds type TYPE. |
1742 | Return 0 if TYPE is NULL. */ | |
1743 | ||
14f9c5c9 | 1744 | static int |
d2e4a39e | 1745 | desc_arity (struct type *type) |
14f9c5c9 AS |
1746 | { |
1747 | type = desc_base_type (type); | |
1748 | ||
1749 | if (type != NULL) | |
1750 | return TYPE_NFIELDS (type) / 2; | |
1751 | return 0; | |
1752 | } | |
1753 | ||
4c4b4cd2 PH |
1754 | /* Non-zero iff TYPE is a simple array type (not a pointer to one) or |
1755 | an array descriptor type (representing an unconstrained array | |
1756 | type). */ | |
1757 | ||
76a01679 JB |
1758 | static int |
1759 | ada_is_direct_array_type (struct type *type) | |
4c4b4cd2 PH |
1760 | { |
1761 | if (type == NULL) | |
1762 | return 0; | |
61ee279c | 1763 | type = ada_check_typedef (type); |
4c4b4cd2 | 1764 | return (TYPE_CODE (type) == TYPE_CODE_ARRAY |
76a01679 | 1765 | || ada_is_array_descriptor_type (type)); |
4c4b4cd2 PH |
1766 | } |
1767 | ||
52ce6436 | 1768 | /* Non-zero iff TYPE represents any kind of array in Ada, or a pointer |
0963b4bd | 1769 | * to one. */ |
52ce6436 | 1770 | |
2c0b251b | 1771 | static int |
52ce6436 PH |
1772 | ada_is_array_type (struct type *type) |
1773 | { | |
1774 | while (type != NULL | |
1775 | && (TYPE_CODE (type) == TYPE_CODE_PTR | |
1776 | || TYPE_CODE (type) == TYPE_CODE_REF)) | |
1777 | type = TYPE_TARGET_TYPE (type); | |
1778 | return ada_is_direct_array_type (type); | |
1779 | } | |
1780 | ||
4c4b4cd2 | 1781 | /* Non-zero iff TYPE is a simple array type or pointer to one. */ |
14f9c5c9 | 1782 | |
14f9c5c9 | 1783 | int |
4c4b4cd2 | 1784 | ada_is_simple_array_type (struct type *type) |
14f9c5c9 AS |
1785 | { |
1786 | if (type == NULL) | |
1787 | return 0; | |
61ee279c | 1788 | type = ada_check_typedef (type); |
14f9c5c9 | 1789 | return (TYPE_CODE (type) == TYPE_CODE_ARRAY |
4c4b4cd2 | 1790 | || (TYPE_CODE (type) == TYPE_CODE_PTR |
b0dd7688 JB |
1791 | && TYPE_CODE (ada_check_typedef (TYPE_TARGET_TYPE (type))) |
1792 | == TYPE_CODE_ARRAY)); | |
14f9c5c9 AS |
1793 | } |
1794 | ||
4c4b4cd2 PH |
1795 | /* Non-zero iff TYPE belongs to a GNAT array descriptor. */ |
1796 | ||
14f9c5c9 | 1797 | int |
4c4b4cd2 | 1798 | ada_is_array_descriptor_type (struct type *type) |
14f9c5c9 | 1799 | { |
556bdfd4 | 1800 | struct type *data_type = desc_data_target_type (type); |
14f9c5c9 AS |
1801 | |
1802 | if (type == NULL) | |
1803 | return 0; | |
61ee279c | 1804 | type = ada_check_typedef (type); |
556bdfd4 UW |
1805 | return (data_type != NULL |
1806 | && TYPE_CODE (data_type) == TYPE_CODE_ARRAY | |
1807 | && desc_arity (desc_bounds_type (type)) > 0); | |
14f9c5c9 AS |
1808 | } |
1809 | ||
1810 | /* Non-zero iff type is a partially mal-formed GNAT array | |
4c4b4cd2 | 1811 | descriptor. FIXME: This is to compensate for some problems with |
14f9c5c9 | 1812 | debugging output from GNAT. Re-examine periodically to see if it |
4c4b4cd2 PH |
1813 | is still needed. */ |
1814 | ||
14f9c5c9 | 1815 | int |
ebf56fd3 | 1816 | ada_is_bogus_array_descriptor (struct type *type) |
14f9c5c9 | 1817 | { |
d2e4a39e | 1818 | return |
14f9c5c9 AS |
1819 | type != NULL |
1820 | && TYPE_CODE (type) == TYPE_CODE_STRUCT | |
1821 | && (lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL | |
4c4b4cd2 PH |
1822 | || lookup_struct_elt_type (type, "P_ARRAY", 1) != NULL) |
1823 | && !ada_is_array_descriptor_type (type); | |
14f9c5c9 AS |
1824 | } |
1825 | ||
1826 | ||
4c4b4cd2 | 1827 | /* If ARR has a record type in the form of a standard GNAT array descriptor, |
14f9c5c9 | 1828 | (fat pointer) returns the type of the array data described---specifically, |
4c4b4cd2 | 1829 | a pointer-to-array type. If BOUNDS is non-zero, the bounds data are filled |
14f9c5c9 | 1830 | in from the descriptor; otherwise, they are left unspecified. If |
4c4b4cd2 PH |
1831 | the ARR denotes a null array descriptor and BOUNDS is non-zero, |
1832 | returns NULL. The result is simply the type of ARR if ARR is not | |
14f9c5c9 | 1833 | a descriptor. */ |
d2e4a39e AS |
1834 | struct type * |
1835 | ada_type_of_array (struct value *arr, int bounds) | |
14f9c5c9 | 1836 | { |
ad82864c JB |
1837 | if (ada_is_constrained_packed_array_type (value_type (arr))) |
1838 | return decode_constrained_packed_array_type (value_type (arr)); | |
14f9c5c9 | 1839 | |
df407dfe AC |
1840 | if (!ada_is_array_descriptor_type (value_type (arr))) |
1841 | return value_type (arr); | |
d2e4a39e AS |
1842 | |
1843 | if (!bounds) | |
ad82864c JB |
1844 | { |
1845 | struct type *array_type = | |
1846 | ada_check_typedef (desc_data_target_type (value_type (arr))); | |
1847 | ||
1848 | if (ada_is_unconstrained_packed_array_type (value_type (arr))) | |
1849 | TYPE_FIELD_BITSIZE (array_type, 0) = | |
1850 | decode_packed_array_bitsize (value_type (arr)); | |
1851 | ||
1852 | return array_type; | |
1853 | } | |
14f9c5c9 AS |
1854 | else |
1855 | { | |
d2e4a39e | 1856 | struct type *elt_type; |
14f9c5c9 | 1857 | int arity; |
d2e4a39e | 1858 | struct value *descriptor; |
14f9c5c9 | 1859 | |
df407dfe AC |
1860 | elt_type = ada_array_element_type (value_type (arr), -1); |
1861 | arity = ada_array_arity (value_type (arr)); | |
14f9c5c9 | 1862 | |
d2e4a39e | 1863 | if (elt_type == NULL || arity == 0) |
df407dfe | 1864 | return ada_check_typedef (value_type (arr)); |
14f9c5c9 AS |
1865 | |
1866 | descriptor = desc_bounds (arr); | |
d2e4a39e | 1867 | if (value_as_long (descriptor) == 0) |
4c4b4cd2 | 1868 | return NULL; |
d2e4a39e | 1869 | while (arity > 0) |
4c4b4cd2 | 1870 | { |
e9bb382b UW |
1871 | struct type *range_type = alloc_type_copy (value_type (arr)); |
1872 | struct type *array_type = alloc_type_copy (value_type (arr)); | |
4c4b4cd2 PH |
1873 | struct value *low = desc_one_bound (descriptor, arity, 0); |
1874 | struct value *high = desc_one_bound (descriptor, arity, 1); | |
4c4b4cd2 | 1875 | |
5b4ee69b | 1876 | arity -= 1; |
df407dfe | 1877 | create_range_type (range_type, value_type (low), |
529cad9c PH |
1878 | longest_to_int (value_as_long (low)), |
1879 | longest_to_int (value_as_long (high))); | |
4c4b4cd2 | 1880 | elt_type = create_array_type (array_type, elt_type, range_type); |
ad82864c JB |
1881 | |
1882 | if (ada_is_unconstrained_packed_array_type (value_type (arr))) | |
e67ad678 JB |
1883 | { |
1884 | /* We need to store the element packed bitsize, as well as | |
1885 | recompute the array size, because it was previously | |
1886 | computed based on the unpacked element size. */ | |
1887 | LONGEST lo = value_as_long (low); | |
1888 | LONGEST hi = value_as_long (high); | |
1889 | ||
1890 | TYPE_FIELD_BITSIZE (elt_type, 0) = | |
1891 | decode_packed_array_bitsize (value_type (arr)); | |
1892 | /* If the array has no element, then the size is already | |
1893 | zero, and does not need to be recomputed. */ | |
1894 | if (lo < hi) | |
1895 | { | |
1896 | int array_bitsize = | |
1897 | (hi - lo + 1) * TYPE_FIELD_BITSIZE (elt_type, 0); | |
1898 | ||
1899 | TYPE_LENGTH (array_type) = (array_bitsize + 7) / 8; | |
1900 | } | |
1901 | } | |
4c4b4cd2 | 1902 | } |
14f9c5c9 AS |
1903 | |
1904 | return lookup_pointer_type (elt_type); | |
1905 | } | |
1906 | } | |
1907 | ||
1908 | /* If ARR does not represent an array, returns ARR unchanged. | |
4c4b4cd2 PH |
1909 | Otherwise, returns either a standard GDB array with bounds set |
1910 | appropriately or, if ARR is a non-null fat pointer, a pointer to a standard | |
1911 | GDB array. Returns NULL if ARR is a null fat pointer. */ | |
1912 | ||
d2e4a39e AS |
1913 | struct value * |
1914 | ada_coerce_to_simple_array_ptr (struct value *arr) | |
14f9c5c9 | 1915 | { |
df407dfe | 1916 | if (ada_is_array_descriptor_type (value_type (arr))) |
14f9c5c9 | 1917 | { |
d2e4a39e | 1918 | struct type *arrType = ada_type_of_array (arr, 1); |
5b4ee69b | 1919 | |
14f9c5c9 | 1920 | if (arrType == NULL) |
4c4b4cd2 | 1921 | return NULL; |
14f9c5c9 AS |
1922 | return value_cast (arrType, value_copy (desc_data (arr))); |
1923 | } | |
ad82864c JB |
1924 | else if (ada_is_constrained_packed_array_type (value_type (arr))) |
1925 | return decode_constrained_packed_array (arr); | |
14f9c5c9 AS |
1926 | else |
1927 | return arr; | |
1928 | } | |
1929 | ||
1930 | /* If ARR does not represent an array, returns ARR unchanged. | |
1931 | Otherwise, returns a standard GDB array describing ARR (which may | |
4c4b4cd2 PH |
1932 | be ARR itself if it already is in the proper form). */ |
1933 | ||
720d1a40 | 1934 | struct value * |
d2e4a39e | 1935 | ada_coerce_to_simple_array (struct value *arr) |
14f9c5c9 | 1936 | { |
df407dfe | 1937 | if (ada_is_array_descriptor_type (value_type (arr))) |
14f9c5c9 | 1938 | { |
d2e4a39e | 1939 | struct value *arrVal = ada_coerce_to_simple_array_ptr (arr); |
5b4ee69b | 1940 | |
14f9c5c9 | 1941 | if (arrVal == NULL) |
323e0a4a | 1942 | error (_("Bounds unavailable for null array pointer.")); |
529cad9c | 1943 | check_size (TYPE_TARGET_TYPE (value_type (arrVal))); |
14f9c5c9 AS |
1944 | return value_ind (arrVal); |
1945 | } | |
ad82864c JB |
1946 | else if (ada_is_constrained_packed_array_type (value_type (arr))) |
1947 | return decode_constrained_packed_array (arr); | |
d2e4a39e | 1948 | else |
14f9c5c9 AS |
1949 | return arr; |
1950 | } | |
1951 | ||
1952 | /* If TYPE represents a GNAT array type, return it translated to an | |
1953 | ordinary GDB array type (possibly with BITSIZE fields indicating | |
4c4b4cd2 PH |
1954 | packing). For other types, is the identity. */ |
1955 | ||
d2e4a39e AS |
1956 | struct type * |
1957 | ada_coerce_to_simple_array_type (struct type *type) | |
14f9c5c9 | 1958 | { |
ad82864c JB |
1959 | if (ada_is_constrained_packed_array_type (type)) |
1960 | return decode_constrained_packed_array_type (type); | |
17280b9f UW |
1961 | |
1962 | if (ada_is_array_descriptor_type (type)) | |
556bdfd4 | 1963 | return ada_check_typedef (desc_data_target_type (type)); |
17280b9f UW |
1964 | |
1965 | return type; | |
14f9c5c9 AS |
1966 | } |
1967 | ||
4c4b4cd2 PH |
1968 | /* Non-zero iff TYPE represents a standard GNAT packed-array type. */ |
1969 | ||
ad82864c JB |
1970 | static int |
1971 | ada_is_packed_array_type (struct type *type) | |
14f9c5c9 AS |
1972 | { |
1973 | if (type == NULL) | |
1974 | return 0; | |
4c4b4cd2 | 1975 | type = desc_base_type (type); |
61ee279c | 1976 | type = ada_check_typedef (type); |
d2e4a39e | 1977 | return |
14f9c5c9 AS |
1978 | ada_type_name (type) != NULL |
1979 | && strstr (ada_type_name (type), "___XP") != NULL; | |
1980 | } | |
1981 | ||
ad82864c JB |
1982 | /* Non-zero iff TYPE represents a standard GNAT constrained |
1983 | packed-array type. */ | |
1984 | ||
1985 | int | |
1986 | ada_is_constrained_packed_array_type (struct type *type) | |
1987 | { | |
1988 | return ada_is_packed_array_type (type) | |
1989 | && !ada_is_array_descriptor_type (type); | |
1990 | } | |
1991 | ||
1992 | /* Non-zero iff TYPE represents an array descriptor for a | |
1993 | unconstrained packed-array type. */ | |
1994 | ||
1995 | static int | |
1996 | ada_is_unconstrained_packed_array_type (struct type *type) | |
1997 | { | |
1998 | return ada_is_packed_array_type (type) | |
1999 | && ada_is_array_descriptor_type (type); | |
2000 | } | |
2001 | ||
2002 | /* Given that TYPE encodes a packed array type (constrained or unconstrained), | |
2003 | return the size of its elements in bits. */ | |
2004 | ||
2005 | static long | |
2006 | decode_packed_array_bitsize (struct type *type) | |
2007 | { | |
0d5cff50 DE |
2008 | const char *raw_name; |
2009 | const char *tail; | |
ad82864c JB |
2010 | long bits; |
2011 | ||
720d1a40 JB |
2012 | /* Access to arrays implemented as fat pointers are encoded as a typedef |
2013 | of the fat pointer type. We need the name of the fat pointer type | |
2014 | to do the decoding, so strip the typedef layer. */ | |
2015 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) | |
2016 | type = ada_typedef_target_type (type); | |
2017 | ||
2018 | raw_name = ada_type_name (ada_check_typedef (type)); | |
ad82864c JB |
2019 | if (!raw_name) |
2020 | raw_name = ada_type_name (desc_base_type (type)); | |
2021 | ||
2022 | if (!raw_name) | |
2023 | return 0; | |
2024 | ||
2025 | tail = strstr (raw_name, "___XP"); | |
720d1a40 | 2026 | gdb_assert (tail != NULL); |
ad82864c JB |
2027 | |
2028 | if (sscanf (tail + sizeof ("___XP") - 1, "%ld", &bits) != 1) | |
2029 | { | |
2030 | lim_warning | |
2031 | (_("could not understand bit size information on packed array")); | |
2032 | return 0; | |
2033 | } | |
2034 | ||
2035 | return bits; | |
2036 | } | |
2037 | ||
14f9c5c9 AS |
2038 | /* Given that TYPE is a standard GDB array type with all bounds filled |
2039 | in, and that the element size of its ultimate scalar constituents | |
2040 | (that is, either its elements, or, if it is an array of arrays, its | |
2041 | elements' elements, etc.) is *ELT_BITS, return an identical type, | |
2042 | but with the bit sizes of its elements (and those of any | |
2043 | constituent arrays) recorded in the BITSIZE components of its | |
4c4b4cd2 PH |
2044 | TYPE_FIELD_BITSIZE values, and with *ELT_BITS set to its total size |
2045 | in bits. */ | |
2046 | ||
d2e4a39e | 2047 | static struct type * |
ad82864c | 2048 | constrained_packed_array_type (struct type *type, long *elt_bits) |
14f9c5c9 | 2049 | { |
d2e4a39e AS |
2050 | struct type *new_elt_type; |
2051 | struct type *new_type; | |
99b1c762 JB |
2052 | struct type *index_type_desc; |
2053 | struct type *index_type; | |
14f9c5c9 AS |
2054 | LONGEST low_bound, high_bound; |
2055 | ||
61ee279c | 2056 | type = ada_check_typedef (type); |
14f9c5c9 AS |
2057 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY) |
2058 | return type; | |
2059 | ||
99b1c762 JB |
2060 | index_type_desc = ada_find_parallel_type (type, "___XA"); |
2061 | if (index_type_desc) | |
2062 | index_type = to_fixed_range_type (TYPE_FIELD_TYPE (index_type_desc, 0), | |
2063 | NULL); | |
2064 | else | |
2065 | index_type = TYPE_INDEX_TYPE (type); | |
2066 | ||
e9bb382b | 2067 | new_type = alloc_type_copy (type); |
ad82864c JB |
2068 | new_elt_type = |
2069 | constrained_packed_array_type (ada_check_typedef (TYPE_TARGET_TYPE (type)), | |
2070 | elt_bits); | |
99b1c762 | 2071 | create_array_type (new_type, new_elt_type, index_type); |
14f9c5c9 AS |
2072 | TYPE_FIELD_BITSIZE (new_type, 0) = *elt_bits; |
2073 | TYPE_NAME (new_type) = ada_type_name (type); | |
2074 | ||
99b1c762 | 2075 | if (get_discrete_bounds (index_type, &low_bound, &high_bound) < 0) |
14f9c5c9 AS |
2076 | low_bound = high_bound = 0; |
2077 | if (high_bound < low_bound) | |
2078 | *elt_bits = TYPE_LENGTH (new_type) = 0; | |
d2e4a39e | 2079 | else |
14f9c5c9 AS |
2080 | { |
2081 | *elt_bits *= (high_bound - low_bound + 1); | |
d2e4a39e | 2082 | TYPE_LENGTH (new_type) = |
4c4b4cd2 | 2083 | (*elt_bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; |
14f9c5c9 AS |
2084 | } |
2085 | ||
876cecd0 | 2086 | TYPE_FIXED_INSTANCE (new_type) = 1; |
14f9c5c9 AS |
2087 | return new_type; |
2088 | } | |
2089 | ||
ad82864c JB |
2090 | /* The array type encoded by TYPE, where |
2091 | ada_is_constrained_packed_array_type (TYPE). */ | |
4c4b4cd2 | 2092 | |
d2e4a39e | 2093 | static struct type * |
ad82864c | 2094 | decode_constrained_packed_array_type (struct type *type) |
d2e4a39e | 2095 | { |
0d5cff50 | 2096 | const char *raw_name = ada_type_name (ada_check_typedef (type)); |
727e3d2e | 2097 | char *name; |
0d5cff50 | 2098 | const char *tail; |
d2e4a39e | 2099 | struct type *shadow_type; |
14f9c5c9 | 2100 | long bits; |
14f9c5c9 | 2101 | |
727e3d2e JB |
2102 | if (!raw_name) |
2103 | raw_name = ada_type_name (desc_base_type (type)); | |
2104 | ||
2105 | if (!raw_name) | |
2106 | return NULL; | |
2107 | ||
2108 | name = (char *) alloca (strlen (raw_name) + 1); | |
2109 | tail = strstr (raw_name, "___XP"); | |
4c4b4cd2 PH |
2110 | type = desc_base_type (type); |
2111 | ||
14f9c5c9 AS |
2112 | memcpy (name, raw_name, tail - raw_name); |
2113 | name[tail - raw_name] = '\000'; | |
2114 | ||
b4ba55a1 JB |
2115 | shadow_type = ada_find_parallel_type_with_name (type, name); |
2116 | ||
2117 | if (shadow_type == NULL) | |
14f9c5c9 | 2118 | { |
323e0a4a | 2119 | lim_warning (_("could not find bounds information on packed array")); |
14f9c5c9 AS |
2120 | return NULL; |
2121 | } | |
cb249c71 | 2122 | CHECK_TYPEDEF (shadow_type); |
14f9c5c9 AS |
2123 | |
2124 | if (TYPE_CODE (shadow_type) != TYPE_CODE_ARRAY) | |
2125 | { | |
0963b4bd MS |
2126 | lim_warning (_("could not understand bounds " |
2127 | "information on packed array")); | |
14f9c5c9 AS |
2128 | return NULL; |
2129 | } | |
d2e4a39e | 2130 | |
ad82864c JB |
2131 | bits = decode_packed_array_bitsize (type); |
2132 | return constrained_packed_array_type (shadow_type, &bits); | |
14f9c5c9 AS |
2133 | } |
2134 | ||
ad82864c JB |
2135 | /* Given that ARR is a struct value *indicating a GNAT constrained packed |
2136 | array, returns a simple array that denotes that array. Its type is a | |
14f9c5c9 AS |
2137 | standard GDB array type except that the BITSIZEs of the array |
2138 | target types are set to the number of bits in each element, and the | |
4c4b4cd2 | 2139 | type length is set appropriately. */ |
14f9c5c9 | 2140 | |
d2e4a39e | 2141 | static struct value * |
ad82864c | 2142 | decode_constrained_packed_array (struct value *arr) |
14f9c5c9 | 2143 | { |
4c4b4cd2 | 2144 | struct type *type; |
14f9c5c9 | 2145 | |
4c4b4cd2 | 2146 | arr = ada_coerce_ref (arr); |
284614f0 JB |
2147 | |
2148 | /* If our value is a pointer, then dererence it. Make sure that | |
2149 | this operation does not cause the target type to be fixed, as | |
2150 | this would indirectly cause this array to be decoded. The rest | |
2151 | of the routine assumes that the array hasn't been decoded yet, | |
2152 | so we use the basic "value_ind" routine to perform the dereferencing, | |
2153 | as opposed to using "ada_value_ind". */ | |
828292f2 | 2154 | if (TYPE_CODE (ada_check_typedef (value_type (arr))) == TYPE_CODE_PTR) |
284614f0 | 2155 | arr = value_ind (arr); |
4c4b4cd2 | 2156 | |
ad82864c | 2157 | type = decode_constrained_packed_array_type (value_type (arr)); |
14f9c5c9 AS |
2158 | if (type == NULL) |
2159 | { | |
323e0a4a | 2160 | error (_("can't unpack array")); |
14f9c5c9 AS |
2161 | return NULL; |
2162 | } | |
61ee279c | 2163 | |
50810684 | 2164 | if (gdbarch_bits_big_endian (get_type_arch (value_type (arr))) |
32c9a795 | 2165 | && ada_is_modular_type (value_type (arr))) |
61ee279c PH |
2166 | { |
2167 | /* This is a (right-justified) modular type representing a packed | |
2168 | array with no wrapper. In order to interpret the value through | |
2169 | the (left-justified) packed array type we just built, we must | |
2170 | first left-justify it. */ | |
2171 | int bit_size, bit_pos; | |
2172 | ULONGEST mod; | |
2173 | ||
df407dfe | 2174 | mod = ada_modulus (value_type (arr)) - 1; |
61ee279c PH |
2175 | bit_size = 0; |
2176 | while (mod > 0) | |
2177 | { | |
2178 | bit_size += 1; | |
2179 | mod >>= 1; | |
2180 | } | |
df407dfe | 2181 | bit_pos = HOST_CHAR_BIT * TYPE_LENGTH (value_type (arr)) - bit_size; |
61ee279c PH |
2182 | arr = ada_value_primitive_packed_val (arr, NULL, |
2183 | bit_pos / HOST_CHAR_BIT, | |
2184 | bit_pos % HOST_CHAR_BIT, | |
2185 | bit_size, | |
2186 | type); | |
2187 | } | |
2188 | ||
4c4b4cd2 | 2189 | return coerce_unspec_val_to_type (arr, type); |
14f9c5c9 AS |
2190 | } |
2191 | ||
2192 | ||
2193 | /* The value of the element of packed array ARR at the ARITY indices | |
4c4b4cd2 | 2194 | given in IND. ARR must be a simple array. */ |
14f9c5c9 | 2195 | |
d2e4a39e AS |
2196 | static struct value * |
2197 | value_subscript_packed (struct value *arr, int arity, struct value **ind) | |
14f9c5c9 AS |
2198 | { |
2199 | int i; | |
2200 | int bits, elt_off, bit_off; | |
2201 | long elt_total_bit_offset; | |
d2e4a39e AS |
2202 | struct type *elt_type; |
2203 | struct value *v; | |
14f9c5c9 AS |
2204 | |
2205 | bits = 0; | |
2206 | elt_total_bit_offset = 0; | |
df407dfe | 2207 | elt_type = ada_check_typedef (value_type (arr)); |
d2e4a39e | 2208 | for (i = 0; i < arity; i += 1) |
14f9c5c9 | 2209 | { |
d2e4a39e | 2210 | if (TYPE_CODE (elt_type) != TYPE_CODE_ARRAY |
4c4b4cd2 PH |
2211 | || TYPE_FIELD_BITSIZE (elt_type, 0) == 0) |
2212 | error | |
0963b4bd MS |
2213 | (_("attempt to do packed indexing of " |
2214 | "something other than a packed array")); | |
14f9c5c9 | 2215 | else |
4c4b4cd2 PH |
2216 | { |
2217 | struct type *range_type = TYPE_INDEX_TYPE (elt_type); | |
2218 | LONGEST lowerbound, upperbound; | |
2219 | LONGEST idx; | |
2220 | ||
2221 | if (get_discrete_bounds (range_type, &lowerbound, &upperbound) < 0) | |
2222 | { | |
323e0a4a | 2223 | lim_warning (_("don't know bounds of array")); |
4c4b4cd2 PH |
2224 | lowerbound = upperbound = 0; |
2225 | } | |
2226 | ||
3cb382c9 | 2227 | idx = pos_atr (ind[i]); |
4c4b4cd2 | 2228 | if (idx < lowerbound || idx > upperbound) |
0963b4bd MS |
2229 | lim_warning (_("packed array index %ld out of bounds"), |
2230 | (long) idx); | |
4c4b4cd2 PH |
2231 | bits = TYPE_FIELD_BITSIZE (elt_type, 0); |
2232 | elt_total_bit_offset += (idx - lowerbound) * bits; | |
61ee279c | 2233 | elt_type = ada_check_typedef (TYPE_TARGET_TYPE (elt_type)); |
4c4b4cd2 | 2234 | } |
14f9c5c9 AS |
2235 | } |
2236 | elt_off = elt_total_bit_offset / HOST_CHAR_BIT; | |
2237 | bit_off = elt_total_bit_offset % HOST_CHAR_BIT; | |
d2e4a39e AS |
2238 | |
2239 | v = ada_value_primitive_packed_val (arr, NULL, elt_off, bit_off, | |
4c4b4cd2 | 2240 | bits, elt_type); |
14f9c5c9 AS |
2241 | return v; |
2242 | } | |
2243 | ||
4c4b4cd2 | 2244 | /* Non-zero iff TYPE includes negative integer values. */ |
14f9c5c9 AS |
2245 | |
2246 | static int | |
d2e4a39e | 2247 | has_negatives (struct type *type) |
14f9c5c9 | 2248 | { |
d2e4a39e AS |
2249 | switch (TYPE_CODE (type)) |
2250 | { | |
2251 | default: | |
2252 | return 0; | |
2253 | case TYPE_CODE_INT: | |
2254 | return !TYPE_UNSIGNED (type); | |
2255 | case TYPE_CODE_RANGE: | |
2256 | return TYPE_LOW_BOUND (type) < 0; | |
2257 | } | |
14f9c5c9 | 2258 | } |
d2e4a39e | 2259 | |
14f9c5c9 AS |
2260 | |
2261 | /* Create a new value of type TYPE from the contents of OBJ starting | |
2262 | at byte OFFSET, and bit offset BIT_OFFSET within that byte, | |
2263 | proceeding for BIT_SIZE bits. If OBJ is an lval in memory, then | |
0963b4bd | 2264 | assigning through the result will set the field fetched from. |
4c4b4cd2 PH |
2265 | VALADDR is ignored unless OBJ is NULL, in which case, |
2266 | VALADDR+OFFSET must address the start of storage containing the | |
2267 | packed value. The value returned in this case is never an lval. | |
2268 | Assumes 0 <= BIT_OFFSET < HOST_CHAR_BIT. */ | |
14f9c5c9 | 2269 | |
d2e4a39e | 2270 | struct value * |
fc1a4b47 | 2271 | ada_value_primitive_packed_val (struct value *obj, const gdb_byte *valaddr, |
a2bd3dcd | 2272 | long offset, int bit_offset, int bit_size, |
4c4b4cd2 | 2273 | struct type *type) |
14f9c5c9 | 2274 | { |
d2e4a39e | 2275 | struct value *v; |
4c4b4cd2 PH |
2276 | int src, /* Index into the source area */ |
2277 | targ, /* Index into the target area */ | |
2278 | srcBitsLeft, /* Number of source bits left to move */ | |
2279 | nsrc, ntarg, /* Number of source and target bytes */ | |
2280 | unusedLS, /* Number of bits in next significant | |
2281 | byte of source that are unused */ | |
2282 | accumSize; /* Number of meaningful bits in accum */ | |
2283 | unsigned char *bytes; /* First byte containing data to unpack */ | |
d2e4a39e | 2284 | unsigned char *unpacked; |
4c4b4cd2 | 2285 | unsigned long accum; /* Staging area for bits being transferred */ |
14f9c5c9 AS |
2286 | unsigned char sign; |
2287 | int len = (bit_size + bit_offset + HOST_CHAR_BIT - 1) / 8; | |
4c4b4cd2 PH |
2288 | /* Transmit bytes from least to most significant; delta is the direction |
2289 | the indices move. */ | |
50810684 | 2290 | int delta = gdbarch_bits_big_endian (get_type_arch (type)) ? -1 : 1; |
14f9c5c9 | 2291 | |
61ee279c | 2292 | type = ada_check_typedef (type); |
14f9c5c9 AS |
2293 | |
2294 | if (obj == NULL) | |
2295 | { | |
2296 | v = allocate_value (type); | |
d2e4a39e | 2297 | bytes = (unsigned char *) (valaddr + offset); |
14f9c5c9 | 2298 | } |
9214ee5f | 2299 | else if (VALUE_LVAL (obj) == lval_memory && value_lazy (obj)) |
14f9c5c9 | 2300 | { |
53ba8333 | 2301 | v = value_at (type, value_address (obj)); |
d2e4a39e | 2302 | bytes = (unsigned char *) alloca (len); |
53ba8333 | 2303 | read_memory (value_address (v) + offset, bytes, len); |
14f9c5c9 | 2304 | } |
d2e4a39e | 2305 | else |
14f9c5c9 AS |
2306 | { |
2307 | v = allocate_value (type); | |
0fd88904 | 2308 | bytes = (unsigned char *) value_contents (obj) + offset; |
14f9c5c9 | 2309 | } |
d2e4a39e AS |
2310 | |
2311 | if (obj != NULL) | |
14f9c5c9 | 2312 | { |
53ba8333 | 2313 | long new_offset = offset; |
5b4ee69b | 2314 | |
74bcbdf3 | 2315 | set_value_component_location (v, obj); |
9bbda503 AC |
2316 | set_value_bitpos (v, bit_offset + value_bitpos (obj)); |
2317 | set_value_bitsize (v, bit_size); | |
df407dfe | 2318 | if (value_bitpos (v) >= HOST_CHAR_BIT) |
4c4b4cd2 | 2319 | { |
53ba8333 | 2320 | ++new_offset; |
9bbda503 | 2321 | set_value_bitpos (v, value_bitpos (v) - HOST_CHAR_BIT); |
4c4b4cd2 | 2322 | } |
53ba8333 JB |
2323 | set_value_offset (v, new_offset); |
2324 | ||
2325 | /* Also set the parent value. This is needed when trying to | |
2326 | assign a new value (in inferior memory). */ | |
2327 | set_value_parent (v, obj); | |
2328 | value_incref (obj); | |
14f9c5c9 AS |
2329 | } |
2330 | else | |
9bbda503 | 2331 | set_value_bitsize (v, bit_size); |
0fd88904 | 2332 | unpacked = (unsigned char *) value_contents (v); |
14f9c5c9 AS |
2333 | |
2334 | srcBitsLeft = bit_size; | |
2335 | nsrc = len; | |
2336 | ntarg = TYPE_LENGTH (type); | |
2337 | sign = 0; | |
2338 | if (bit_size == 0) | |
2339 | { | |
2340 | memset (unpacked, 0, TYPE_LENGTH (type)); | |
2341 | return v; | |
2342 | } | |
50810684 | 2343 | else if (gdbarch_bits_big_endian (get_type_arch (type))) |
14f9c5c9 | 2344 | { |
d2e4a39e | 2345 | src = len - 1; |
1265e4aa JB |
2346 | if (has_negatives (type) |
2347 | && ((bytes[0] << bit_offset) & (1 << (HOST_CHAR_BIT - 1)))) | |
4c4b4cd2 | 2348 | sign = ~0; |
d2e4a39e AS |
2349 | |
2350 | unusedLS = | |
4c4b4cd2 PH |
2351 | (HOST_CHAR_BIT - (bit_size + bit_offset) % HOST_CHAR_BIT) |
2352 | % HOST_CHAR_BIT; | |
14f9c5c9 AS |
2353 | |
2354 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
2355 | { |
2356 | case TYPE_CODE_ARRAY: | |
2357 | case TYPE_CODE_UNION: | |
2358 | case TYPE_CODE_STRUCT: | |
2359 | /* Non-scalar values must be aligned at a byte boundary... */ | |
2360 | accumSize = | |
2361 | (HOST_CHAR_BIT - bit_size % HOST_CHAR_BIT) % HOST_CHAR_BIT; | |
2362 | /* ... And are placed at the beginning (most-significant) bytes | |
2363 | of the target. */ | |
529cad9c | 2364 | targ = (bit_size + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT - 1; |
0056e4d5 | 2365 | ntarg = targ + 1; |
4c4b4cd2 PH |
2366 | break; |
2367 | default: | |
2368 | accumSize = 0; | |
2369 | targ = TYPE_LENGTH (type) - 1; | |
2370 | break; | |
2371 | } | |
14f9c5c9 | 2372 | } |
d2e4a39e | 2373 | else |
14f9c5c9 AS |
2374 | { |
2375 | int sign_bit_offset = (bit_size + bit_offset - 1) % 8; | |
2376 | ||
2377 | src = targ = 0; | |
2378 | unusedLS = bit_offset; | |
2379 | accumSize = 0; | |
2380 | ||
d2e4a39e | 2381 | if (has_negatives (type) && (bytes[len - 1] & (1 << sign_bit_offset))) |
4c4b4cd2 | 2382 | sign = ~0; |
14f9c5c9 | 2383 | } |
d2e4a39e | 2384 | |
14f9c5c9 AS |
2385 | accum = 0; |
2386 | while (nsrc > 0) | |
2387 | { | |
2388 | /* Mask for removing bits of the next source byte that are not | |
4c4b4cd2 | 2389 | part of the value. */ |
d2e4a39e | 2390 | unsigned int unusedMSMask = |
4c4b4cd2 PH |
2391 | (1 << (srcBitsLeft >= HOST_CHAR_BIT ? HOST_CHAR_BIT : srcBitsLeft)) - |
2392 | 1; | |
2393 | /* Sign-extend bits for this byte. */ | |
14f9c5c9 | 2394 | unsigned int signMask = sign & ~unusedMSMask; |
5b4ee69b | 2395 | |
d2e4a39e | 2396 | accum |= |
4c4b4cd2 | 2397 | (((bytes[src] >> unusedLS) & unusedMSMask) | signMask) << accumSize; |
14f9c5c9 | 2398 | accumSize += HOST_CHAR_BIT - unusedLS; |
d2e4a39e | 2399 | if (accumSize >= HOST_CHAR_BIT) |
4c4b4cd2 PH |
2400 | { |
2401 | unpacked[targ] = accum & ~(~0L << HOST_CHAR_BIT); | |
2402 | accumSize -= HOST_CHAR_BIT; | |
2403 | accum >>= HOST_CHAR_BIT; | |
2404 | ntarg -= 1; | |
2405 | targ += delta; | |
2406 | } | |
14f9c5c9 AS |
2407 | srcBitsLeft -= HOST_CHAR_BIT - unusedLS; |
2408 | unusedLS = 0; | |
2409 | nsrc -= 1; | |
2410 | src += delta; | |
2411 | } | |
2412 | while (ntarg > 0) | |
2413 | { | |
2414 | accum |= sign << accumSize; | |
2415 | unpacked[targ] = accum & ~(~0L << HOST_CHAR_BIT); | |
2416 | accumSize -= HOST_CHAR_BIT; | |
2417 | accum >>= HOST_CHAR_BIT; | |
2418 | ntarg -= 1; | |
2419 | targ += delta; | |
2420 | } | |
2421 | ||
2422 | return v; | |
2423 | } | |
d2e4a39e | 2424 | |
14f9c5c9 AS |
2425 | /* Move N bits from SOURCE, starting at bit offset SRC_OFFSET to |
2426 | TARGET, starting at bit offset TARG_OFFSET. SOURCE and TARGET must | |
4c4b4cd2 | 2427 | not overlap. */ |
14f9c5c9 | 2428 | static void |
fc1a4b47 | 2429 | move_bits (gdb_byte *target, int targ_offset, const gdb_byte *source, |
50810684 | 2430 | int src_offset, int n, int bits_big_endian_p) |
14f9c5c9 AS |
2431 | { |
2432 | unsigned int accum, mask; | |
2433 | int accum_bits, chunk_size; | |
2434 | ||
2435 | target += targ_offset / HOST_CHAR_BIT; | |
2436 | targ_offset %= HOST_CHAR_BIT; | |
2437 | source += src_offset / HOST_CHAR_BIT; | |
2438 | src_offset %= HOST_CHAR_BIT; | |
50810684 | 2439 | if (bits_big_endian_p) |
14f9c5c9 AS |
2440 | { |
2441 | accum = (unsigned char) *source; | |
2442 | source += 1; | |
2443 | accum_bits = HOST_CHAR_BIT - src_offset; | |
2444 | ||
d2e4a39e | 2445 | while (n > 0) |
4c4b4cd2 PH |
2446 | { |
2447 | int unused_right; | |
5b4ee69b | 2448 | |
4c4b4cd2 PH |
2449 | accum = (accum << HOST_CHAR_BIT) + (unsigned char) *source; |
2450 | accum_bits += HOST_CHAR_BIT; | |
2451 | source += 1; | |
2452 | chunk_size = HOST_CHAR_BIT - targ_offset; | |
2453 | if (chunk_size > n) | |
2454 | chunk_size = n; | |
2455 | unused_right = HOST_CHAR_BIT - (chunk_size + targ_offset); | |
2456 | mask = ((1 << chunk_size) - 1) << unused_right; | |
2457 | *target = | |
2458 | (*target & ~mask) | |
2459 | | ((accum >> (accum_bits - chunk_size - unused_right)) & mask); | |
2460 | n -= chunk_size; | |
2461 | accum_bits -= chunk_size; | |
2462 | target += 1; | |
2463 | targ_offset = 0; | |
2464 | } | |
14f9c5c9 AS |
2465 | } |
2466 | else | |
2467 | { | |
2468 | accum = (unsigned char) *source >> src_offset; | |
2469 | source += 1; | |
2470 | accum_bits = HOST_CHAR_BIT - src_offset; | |
2471 | ||
d2e4a39e | 2472 | while (n > 0) |
4c4b4cd2 PH |
2473 | { |
2474 | accum = accum + ((unsigned char) *source << accum_bits); | |
2475 | accum_bits += HOST_CHAR_BIT; | |
2476 | source += 1; | |
2477 | chunk_size = HOST_CHAR_BIT - targ_offset; | |
2478 | if (chunk_size > n) | |
2479 | chunk_size = n; | |
2480 | mask = ((1 << chunk_size) - 1) << targ_offset; | |
2481 | *target = (*target & ~mask) | ((accum << targ_offset) & mask); | |
2482 | n -= chunk_size; | |
2483 | accum_bits -= chunk_size; | |
2484 | accum >>= chunk_size; | |
2485 | target += 1; | |
2486 | targ_offset = 0; | |
2487 | } | |
14f9c5c9 AS |
2488 | } |
2489 | } | |
2490 | ||
14f9c5c9 AS |
2491 | /* Store the contents of FROMVAL into the location of TOVAL. |
2492 | Return a new value with the location of TOVAL and contents of | |
2493 | FROMVAL. Handles assignment into packed fields that have | |
4c4b4cd2 | 2494 | floating-point or non-scalar types. */ |
14f9c5c9 | 2495 | |
d2e4a39e AS |
2496 | static struct value * |
2497 | ada_value_assign (struct value *toval, struct value *fromval) | |
14f9c5c9 | 2498 | { |
df407dfe AC |
2499 | struct type *type = value_type (toval); |
2500 | int bits = value_bitsize (toval); | |
14f9c5c9 | 2501 | |
52ce6436 PH |
2502 | toval = ada_coerce_ref (toval); |
2503 | fromval = ada_coerce_ref (fromval); | |
2504 | ||
2505 | if (ada_is_direct_array_type (value_type (toval))) | |
2506 | toval = ada_coerce_to_simple_array (toval); | |
2507 | if (ada_is_direct_array_type (value_type (fromval))) | |
2508 | fromval = ada_coerce_to_simple_array (fromval); | |
2509 | ||
88e3b34b | 2510 | if (!deprecated_value_modifiable (toval)) |
323e0a4a | 2511 | error (_("Left operand of assignment is not a modifiable lvalue.")); |
14f9c5c9 | 2512 | |
d2e4a39e | 2513 | if (VALUE_LVAL (toval) == lval_memory |
14f9c5c9 | 2514 | && bits > 0 |
d2e4a39e | 2515 | && (TYPE_CODE (type) == TYPE_CODE_FLT |
4c4b4cd2 | 2516 | || TYPE_CODE (type) == TYPE_CODE_STRUCT)) |
14f9c5c9 | 2517 | { |
df407dfe AC |
2518 | int len = (value_bitpos (toval) |
2519 | + bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; | |
aced2898 | 2520 | int from_size; |
d2e4a39e AS |
2521 | char *buffer = (char *) alloca (len); |
2522 | struct value *val; | |
42ae5230 | 2523 | CORE_ADDR to_addr = value_address (toval); |
14f9c5c9 AS |
2524 | |
2525 | if (TYPE_CODE (type) == TYPE_CODE_FLT) | |
4c4b4cd2 | 2526 | fromval = value_cast (type, fromval); |
14f9c5c9 | 2527 | |
52ce6436 | 2528 | read_memory (to_addr, buffer, len); |
aced2898 PH |
2529 | from_size = value_bitsize (fromval); |
2530 | if (from_size == 0) | |
2531 | from_size = TYPE_LENGTH (value_type (fromval)) * TARGET_CHAR_BIT; | |
50810684 | 2532 | if (gdbarch_bits_big_endian (get_type_arch (type))) |
df407dfe | 2533 | move_bits (buffer, value_bitpos (toval), |
50810684 | 2534 | value_contents (fromval), from_size - bits, bits, 1); |
14f9c5c9 | 2535 | else |
50810684 UW |
2536 | move_bits (buffer, value_bitpos (toval), |
2537 | value_contents (fromval), 0, bits, 0); | |
972daa01 | 2538 | write_memory_with_notification (to_addr, buffer, len); |
8cebebb9 | 2539 | |
14f9c5c9 | 2540 | val = value_copy (toval); |
0fd88904 | 2541 | memcpy (value_contents_raw (val), value_contents (fromval), |
4c4b4cd2 | 2542 | TYPE_LENGTH (type)); |
04624583 | 2543 | deprecated_set_value_type (val, type); |
d2e4a39e | 2544 | |
14f9c5c9 AS |
2545 | return val; |
2546 | } | |
2547 | ||
2548 | return value_assign (toval, fromval); | |
2549 | } | |
2550 | ||
2551 | ||
52ce6436 PH |
2552 | /* Given that COMPONENT is a memory lvalue that is part of the lvalue |
2553 | * CONTAINER, assign the contents of VAL to COMPONENTS's place in | |
2554 | * CONTAINER. Modifies the VALUE_CONTENTS of CONTAINER only, not | |
2555 | * COMPONENT, and not the inferior's memory. The current contents | |
2556 | * of COMPONENT are ignored. */ | |
2557 | static void | |
2558 | value_assign_to_component (struct value *container, struct value *component, | |
2559 | struct value *val) | |
2560 | { | |
2561 | LONGEST offset_in_container = | |
42ae5230 | 2562 | (LONGEST) (value_address (component) - value_address (container)); |
52ce6436 PH |
2563 | int bit_offset_in_container = |
2564 | value_bitpos (component) - value_bitpos (container); | |
2565 | int bits; | |
2566 | ||
2567 | val = value_cast (value_type (component), val); | |
2568 | ||
2569 | if (value_bitsize (component) == 0) | |
2570 | bits = TARGET_CHAR_BIT * TYPE_LENGTH (value_type (component)); | |
2571 | else | |
2572 | bits = value_bitsize (component); | |
2573 | ||
50810684 | 2574 | if (gdbarch_bits_big_endian (get_type_arch (value_type (container)))) |
52ce6436 PH |
2575 | move_bits (value_contents_writeable (container) + offset_in_container, |
2576 | value_bitpos (container) + bit_offset_in_container, | |
2577 | value_contents (val), | |
2578 | TYPE_LENGTH (value_type (component)) * TARGET_CHAR_BIT - bits, | |
50810684 | 2579 | bits, 1); |
52ce6436 PH |
2580 | else |
2581 | move_bits (value_contents_writeable (container) + offset_in_container, | |
2582 | value_bitpos (container) + bit_offset_in_container, | |
50810684 | 2583 | value_contents (val), 0, bits, 0); |
52ce6436 PH |
2584 | } |
2585 | ||
4c4b4cd2 PH |
2586 | /* The value of the element of array ARR at the ARITY indices given in IND. |
2587 | ARR may be either a simple array, GNAT array descriptor, or pointer | |
14f9c5c9 AS |
2588 | thereto. */ |
2589 | ||
d2e4a39e AS |
2590 | struct value * |
2591 | ada_value_subscript (struct value *arr, int arity, struct value **ind) | |
14f9c5c9 AS |
2592 | { |
2593 | int k; | |
d2e4a39e AS |
2594 | struct value *elt; |
2595 | struct type *elt_type; | |
14f9c5c9 AS |
2596 | |
2597 | elt = ada_coerce_to_simple_array (arr); | |
2598 | ||
df407dfe | 2599 | elt_type = ada_check_typedef (value_type (elt)); |
d2e4a39e | 2600 | if (TYPE_CODE (elt_type) == TYPE_CODE_ARRAY |
14f9c5c9 AS |
2601 | && TYPE_FIELD_BITSIZE (elt_type, 0) > 0) |
2602 | return value_subscript_packed (elt, arity, ind); | |
2603 | ||
2604 | for (k = 0; k < arity; k += 1) | |
2605 | { | |
2606 | if (TYPE_CODE (elt_type) != TYPE_CODE_ARRAY) | |
323e0a4a | 2607 | error (_("too many subscripts (%d expected)"), k); |
2497b498 | 2608 | elt = value_subscript (elt, pos_atr (ind[k])); |
14f9c5c9 AS |
2609 | } |
2610 | return elt; | |
2611 | } | |
2612 | ||
2613 | /* Assuming ARR is a pointer to a standard GDB array of type TYPE, the | |
2614 | value of the element of *ARR at the ARITY indices given in | |
4c4b4cd2 | 2615 | IND. Does not read the entire array into memory. */ |
14f9c5c9 | 2616 | |
2c0b251b | 2617 | static struct value * |
d2e4a39e | 2618 | ada_value_ptr_subscript (struct value *arr, struct type *type, int arity, |
4c4b4cd2 | 2619 | struct value **ind) |
14f9c5c9 AS |
2620 | { |
2621 | int k; | |
2622 | ||
2623 | for (k = 0; k < arity; k += 1) | |
2624 | { | |
2625 | LONGEST lwb, upb; | |
14f9c5c9 AS |
2626 | |
2627 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY) | |
323e0a4a | 2628 | error (_("too many subscripts (%d expected)"), k); |
d2e4a39e | 2629 | arr = value_cast (lookup_pointer_type (TYPE_TARGET_TYPE (type)), |
4c4b4cd2 | 2630 | value_copy (arr)); |
14f9c5c9 | 2631 | get_discrete_bounds (TYPE_INDEX_TYPE (type), &lwb, &upb); |
2497b498 | 2632 | arr = value_ptradd (arr, pos_atr (ind[k]) - lwb); |
14f9c5c9 AS |
2633 | type = TYPE_TARGET_TYPE (type); |
2634 | } | |
2635 | ||
2636 | return value_ind (arr); | |
2637 | } | |
2638 | ||
0b5d8877 | 2639 | /* Given that ARRAY_PTR is a pointer or reference to an array of type TYPE (the |
f5938064 JG |
2640 | actual type of ARRAY_PTR is ignored), returns the Ada slice of HIGH-LOW+1 |
2641 | elements starting at index LOW. The lower bound of this array is LOW, as | |
0963b4bd | 2642 | per Ada rules. */ |
0b5d8877 | 2643 | static struct value * |
f5938064 JG |
2644 | ada_value_slice_from_ptr (struct value *array_ptr, struct type *type, |
2645 | int low, int high) | |
0b5d8877 | 2646 | { |
b0dd7688 | 2647 | struct type *type0 = ada_check_typedef (type); |
6c038f32 | 2648 | CORE_ADDR base = value_as_address (array_ptr) |
b0dd7688 JB |
2649 | + ((low - ada_discrete_type_low_bound (TYPE_INDEX_TYPE (type0))) |
2650 | * TYPE_LENGTH (TYPE_TARGET_TYPE (type0))); | |
6c038f32 | 2651 | struct type *index_type = |
b0dd7688 | 2652 | create_range_type (NULL, TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (type0)), |
0b5d8877 | 2653 | low, high); |
6c038f32 | 2654 | struct type *slice_type = |
b0dd7688 | 2655 | create_array_type (NULL, TYPE_TARGET_TYPE (type0), index_type); |
5b4ee69b | 2656 | |
f5938064 | 2657 | return value_at_lazy (slice_type, base); |
0b5d8877 PH |
2658 | } |
2659 | ||
2660 | ||
2661 | static struct value * | |
2662 | ada_value_slice (struct value *array, int low, int high) | |
2663 | { | |
b0dd7688 | 2664 | struct type *type = ada_check_typedef (value_type (array)); |
6c038f32 | 2665 | struct type *index_type = |
0b5d8877 | 2666 | create_range_type (NULL, TYPE_INDEX_TYPE (type), low, high); |
6c038f32 | 2667 | struct type *slice_type = |
0b5d8877 | 2668 | create_array_type (NULL, TYPE_TARGET_TYPE (type), index_type); |
5b4ee69b | 2669 | |
6c038f32 | 2670 | return value_cast (slice_type, value_slice (array, low, high - low + 1)); |
0b5d8877 PH |
2671 | } |
2672 | ||
14f9c5c9 AS |
2673 | /* If type is a record type in the form of a standard GNAT array |
2674 | descriptor, returns the number of dimensions for type. If arr is a | |
2675 | simple array, returns the number of "array of"s that prefix its | |
4c4b4cd2 | 2676 | type designation. Otherwise, returns 0. */ |
14f9c5c9 AS |
2677 | |
2678 | int | |
d2e4a39e | 2679 | ada_array_arity (struct type *type) |
14f9c5c9 AS |
2680 | { |
2681 | int arity; | |
2682 | ||
2683 | if (type == NULL) | |
2684 | return 0; | |
2685 | ||
2686 | type = desc_base_type (type); | |
2687 | ||
2688 | arity = 0; | |
d2e4a39e | 2689 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
14f9c5c9 | 2690 | return desc_arity (desc_bounds_type (type)); |
d2e4a39e AS |
2691 | else |
2692 | while (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
14f9c5c9 | 2693 | { |
4c4b4cd2 | 2694 | arity += 1; |
61ee279c | 2695 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
14f9c5c9 | 2696 | } |
d2e4a39e | 2697 | |
14f9c5c9 AS |
2698 | return arity; |
2699 | } | |
2700 | ||
2701 | /* If TYPE is a record type in the form of a standard GNAT array | |
2702 | descriptor or a simple array type, returns the element type for | |
2703 | TYPE after indexing by NINDICES indices, or by all indices if | |
4c4b4cd2 | 2704 | NINDICES is -1. Otherwise, returns NULL. */ |
14f9c5c9 | 2705 | |
d2e4a39e AS |
2706 | struct type * |
2707 | ada_array_element_type (struct type *type, int nindices) | |
14f9c5c9 AS |
2708 | { |
2709 | type = desc_base_type (type); | |
2710 | ||
d2e4a39e | 2711 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
14f9c5c9 AS |
2712 | { |
2713 | int k; | |
d2e4a39e | 2714 | struct type *p_array_type; |
14f9c5c9 | 2715 | |
556bdfd4 | 2716 | p_array_type = desc_data_target_type (type); |
14f9c5c9 AS |
2717 | |
2718 | k = ada_array_arity (type); | |
2719 | if (k == 0) | |
4c4b4cd2 | 2720 | return NULL; |
d2e4a39e | 2721 | |
4c4b4cd2 | 2722 | /* Initially p_array_type = elt_type(*)[]...(k times)...[]. */ |
14f9c5c9 | 2723 | if (nindices >= 0 && k > nindices) |
4c4b4cd2 | 2724 | k = nindices; |
d2e4a39e | 2725 | while (k > 0 && p_array_type != NULL) |
4c4b4cd2 | 2726 | { |
61ee279c | 2727 | p_array_type = ada_check_typedef (TYPE_TARGET_TYPE (p_array_type)); |
4c4b4cd2 PH |
2728 | k -= 1; |
2729 | } | |
14f9c5c9 AS |
2730 | return p_array_type; |
2731 | } | |
2732 | else if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
2733 | { | |
2734 | while (nindices != 0 && TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
4c4b4cd2 PH |
2735 | { |
2736 | type = TYPE_TARGET_TYPE (type); | |
2737 | nindices -= 1; | |
2738 | } | |
14f9c5c9 AS |
2739 | return type; |
2740 | } | |
2741 | ||
2742 | return NULL; | |
2743 | } | |
2744 | ||
4c4b4cd2 | 2745 | /* The type of nth index in arrays of given type (n numbering from 1). |
dd19d49e UW |
2746 | Does not examine memory. Throws an error if N is invalid or TYPE |
2747 | is not an array type. NAME is the name of the Ada attribute being | |
2748 | evaluated ('range, 'first, 'last, or 'length); it is used in building | |
2749 | the error message. */ | |
14f9c5c9 | 2750 | |
1eea4ebd UW |
2751 | static struct type * |
2752 | ada_index_type (struct type *type, int n, const char *name) | |
14f9c5c9 | 2753 | { |
4c4b4cd2 PH |
2754 | struct type *result_type; |
2755 | ||
14f9c5c9 AS |
2756 | type = desc_base_type (type); |
2757 | ||
1eea4ebd UW |
2758 | if (n < 0 || n > ada_array_arity (type)) |
2759 | error (_("invalid dimension number to '%s"), name); | |
14f9c5c9 | 2760 | |
4c4b4cd2 | 2761 | if (ada_is_simple_array_type (type)) |
14f9c5c9 AS |
2762 | { |
2763 | int i; | |
2764 | ||
2765 | for (i = 1; i < n; i += 1) | |
4c4b4cd2 | 2766 | type = TYPE_TARGET_TYPE (type); |
262452ec | 2767 | result_type = TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (type)); |
4c4b4cd2 PH |
2768 | /* FIXME: The stabs type r(0,0);bound;bound in an array type |
2769 | has a target type of TYPE_CODE_UNDEF. We compensate here, but | |
76a01679 | 2770 | perhaps stabsread.c would make more sense. */ |
1eea4ebd UW |
2771 | if (result_type && TYPE_CODE (result_type) == TYPE_CODE_UNDEF) |
2772 | result_type = NULL; | |
14f9c5c9 | 2773 | } |
d2e4a39e | 2774 | else |
1eea4ebd UW |
2775 | { |
2776 | result_type = desc_index_type (desc_bounds_type (type), n); | |
2777 | if (result_type == NULL) | |
2778 | error (_("attempt to take bound of something that is not an array")); | |
2779 | } | |
2780 | ||
2781 | return result_type; | |
14f9c5c9 AS |
2782 | } |
2783 | ||
2784 | /* Given that arr is an array type, returns the lower bound of the | |
2785 | Nth index (numbering from 1) if WHICH is 0, and the upper bound if | |
4c4b4cd2 | 2786 | WHICH is 1. This returns bounds 0 .. -1 if ARR_TYPE is an |
1eea4ebd UW |
2787 | array-descriptor type. It works for other arrays with bounds supplied |
2788 | by run-time quantities other than discriminants. */ | |
14f9c5c9 | 2789 | |
abb68b3e | 2790 | static LONGEST |
1eea4ebd | 2791 | ada_array_bound_from_type (struct type * arr_type, int n, int which) |
14f9c5c9 | 2792 | { |
1ce677a4 | 2793 | struct type *type, *elt_type, *index_type_desc, *index_type; |
1ce677a4 | 2794 | int i; |
262452ec JK |
2795 | |
2796 | gdb_assert (which == 0 || which == 1); | |
14f9c5c9 | 2797 | |
ad82864c JB |
2798 | if (ada_is_constrained_packed_array_type (arr_type)) |
2799 | arr_type = decode_constrained_packed_array_type (arr_type); | |
14f9c5c9 | 2800 | |
4c4b4cd2 | 2801 | if (arr_type == NULL || !ada_is_simple_array_type (arr_type)) |
1eea4ebd | 2802 | return (LONGEST) - which; |
14f9c5c9 AS |
2803 | |
2804 | if (TYPE_CODE (arr_type) == TYPE_CODE_PTR) | |
2805 | type = TYPE_TARGET_TYPE (arr_type); | |
2806 | else | |
2807 | type = arr_type; | |
2808 | ||
1ce677a4 UW |
2809 | elt_type = type; |
2810 | for (i = n; i > 1; i--) | |
2811 | elt_type = TYPE_TARGET_TYPE (type); | |
2812 | ||
14f9c5c9 | 2813 | index_type_desc = ada_find_parallel_type (type, "___XA"); |
28c85d6c | 2814 | ada_fixup_array_indexes_type (index_type_desc); |
262452ec | 2815 | if (index_type_desc != NULL) |
28c85d6c JB |
2816 | index_type = to_fixed_range_type (TYPE_FIELD_TYPE (index_type_desc, n - 1), |
2817 | NULL); | |
262452ec | 2818 | else |
1ce677a4 | 2819 | index_type = TYPE_INDEX_TYPE (elt_type); |
262452ec | 2820 | |
43bbcdc2 PH |
2821 | return |
2822 | (LONGEST) (which == 0 | |
2823 | ? ada_discrete_type_low_bound (index_type) | |
2824 | : ada_discrete_type_high_bound (index_type)); | |
14f9c5c9 AS |
2825 | } |
2826 | ||
2827 | /* Given that arr is an array value, returns the lower bound of the | |
abb68b3e JB |
2828 | nth index (numbering from 1) if WHICH is 0, and the upper bound if |
2829 | WHICH is 1. This routine will also work for arrays with bounds | |
4c4b4cd2 | 2830 | supplied by run-time quantities other than discriminants. */ |
14f9c5c9 | 2831 | |
1eea4ebd | 2832 | static LONGEST |
4dc81987 | 2833 | ada_array_bound (struct value *arr, int n, int which) |
14f9c5c9 | 2834 | { |
df407dfe | 2835 | struct type *arr_type = value_type (arr); |
14f9c5c9 | 2836 | |
ad82864c JB |
2837 | if (ada_is_constrained_packed_array_type (arr_type)) |
2838 | return ada_array_bound (decode_constrained_packed_array (arr), n, which); | |
4c4b4cd2 | 2839 | else if (ada_is_simple_array_type (arr_type)) |
1eea4ebd | 2840 | return ada_array_bound_from_type (arr_type, n, which); |
14f9c5c9 | 2841 | else |
1eea4ebd | 2842 | return value_as_long (desc_one_bound (desc_bounds (arr), n, which)); |
14f9c5c9 AS |
2843 | } |
2844 | ||
2845 | /* Given that arr is an array value, returns the length of the | |
2846 | nth index. This routine will also work for arrays with bounds | |
4c4b4cd2 PH |
2847 | supplied by run-time quantities other than discriminants. |
2848 | Does not work for arrays indexed by enumeration types with representation | |
2849 | clauses at the moment. */ | |
14f9c5c9 | 2850 | |
1eea4ebd | 2851 | static LONGEST |
d2e4a39e | 2852 | ada_array_length (struct value *arr, int n) |
14f9c5c9 | 2853 | { |
df407dfe | 2854 | struct type *arr_type = ada_check_typedef (value_type (arr)); |
14f9c5c9 | 2855 | |
ad82864c JB |
2856 | if (ada_is_constrained_packed_array_type (arr_type)) |
2857 | return ada_array_length (decode_constrained_packed_array (arr), n); | |
14f9c5c9 | 2858 | |
4c4b4cd2 | 2859 | if (ada_is_simple_array_type (arr_type)) |
1eea4ebd UW |
2860 | return (ada_array_bound_from_type (arr_type, n, 1) |
2861 | - ada_array_bound_from_type (arr_type, n, 0) + 1); | |
14f9c5c9 | 2862 | else |
1eea4ebd UW |
2863 | return (value_as_long (desc_one_bound (desc_bounds (arr), n, 1)) |
2864 | - value_as_long (desc_one_bound (desc_bounds (arr), n, 0)) + 1); | |
4c4b4cd2 PH |
2865 | } |
2866 | ||
2867 | /* An empty array whose type is that of ARR_TYPE (an array type), | |
2868 | with bounds LOW to LOW-1. */ | |
2869 | ||
2870 | static struct value * | |
2871 | empty_array (struct type *arr_type, int low) | |
2872 | { | |
b0dd7688 | 2873 | struct type *arr_type0 = ada_check_typedef (arr_type); |
6c038f32 | 2874 | struct type *index_type = |
b0dd7688 | 2875 | create_range_type (NULL, TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (arr_type0)), |
0b5d8877 | 2876 | low, low - 1); |
b0dd7688 | 2877 | struct type *elt_type = ada_array_element_type (arr_type0, 1); |
5b4ee69b | 2878 | |
0b5d8877 | 2879 | return allocate_value (create_array_type (NULL, elt_type, index_type)); |
14f9c5c9 | 2880 | } |
14f9c5c9 | 2881 | \f |
d2e4a39e | 2882 | |
4c4b4cd2 | 2883 | /* Name resolution */ |
14f9c5c9 | 2884 | |
4c4b4cd2 PH |
2885 | /* The "decoded" name for the user-definable Ada operator corresponding |
2886 | to OP. */ | |
14f9c5c9 | 2887 | |
d2e4a39e | 2888 | static const char * |
4c4b4cd2 | 2889 | ada_decoded_op_name (enum exp_opcode op) |
14f9c5c9 AS |
2890 | { |
2891 | int i; | |
2892 | ||
4c4b4cd2 | 2893 | for (i = 0; ada_opname_table[i].encoded != NULL; i += 1) |
14f9c5c9 AS |
2894 | { |
2895 | if (ada_opname_table[i].op == op) | |
4c4b4cd2 | 2896 | return ada_opname_table[i].decoded; |
14f9c5c9 | 2897 | } |
323e0a4a | 2898 | error (_("Could not find operator name for opcode")); |
14f9c5c9 AS |
2899 | } |
2900 | ||
2901 | ||
4c4b4cd2 PH |
2902 | /* Same as evaluate_type (*EXP), but resolves ambiguous symbol |
2903 | references (marked by OP_VAR_VALUE nodes in which the symbol has an | |
2904 | undefined namespace) and converts operators that are | |
2905 | user-defined into appropriate function calls. If CONTEXT_TYPE is | |
14f9c5c9 AS |
2906 | non-null, it provides a preferred result type [at the moment, only |
2907 | type void has any effect---causing procedures to be preferred over | |
2908 | functions in calls]. A null CONTEXT_TYPE indicates that a non-void | |
4c4b4cd2 | 2909 | return type is preferred. May change (expand) *EXP. */ |
14f9c5c9 | 2910 | |
4c4b4cd2 PH |
2911 | static void |
2912 | resolve (struct expression **expp, int void_context_p) | |
14f9c5c9 | 2913 | { |
30b15541 UW |
2914 | struct type *context_type = NULL; |
2915 | int pc = 0; | |
2916 | ||
2917 | if (void_context_p) | |
2918 | context_type = builtin_type ((*expp)->gdbarch)->builtin_void; | |
2919 | ||
2920 | resolve_subexp (expp, &pc, 1, context_type); | |
14f9c5c9 AS |
2921 | } |
2922 | ||
4c4b4cd2 PH |
2923 | /* Resolve the operator of the subexpression beginning at |
2924 | position *POS of *EXPP. "Resolving" consists of replacing | |
2925 | the symbols that have undefined namespaces in OP_VAR_VALUE nodes | |
2926 | with their resolutions, replacing built-in operators with | |
2927 | function calls to user-defined operators, where appropriate, and, | |
2928 | when DEPROCEDURE_P is non-zero, converting function-valued variables | |
2929 | into parameterless calls. May expand *EXPP. The CONTEXT_TYPE functions | |
2930 | are as in ada_resolve, above. */ | |
14f9c5c9 | 2931 | |
d2e4a39e | 2932 | static struct value * |
4c4b4cd2 | 2933 | resolve_subexp (struct expression **expp, int *pos, int deprocedure_p, |
76a01679 | 2934 | struct type *context_type) |
14f9c5c9 AS |
2935 | { |
2936 | int pc = *pos; | |
2937 | int i; | |
4c4b4cd2 | 2938 | struct expression *exp; /* Convenience: == *expp. */ |
14f9c5c9 | 2939 | enum exp_opcode op = (*expp)->elts[pc].opcode; |
4c4b4cd2 PH |
2940 | struct value **argvec; /* Vector of operand types (alloca'ed). */ |
2941 | int nargs; /* Number of operands. */ | |
52ce6436 | 2942 | int oplen; |
14f9c5c9 AS |
2943 | |
2944 | argvec = NULL; | |
2945 | nargs = 0; | |
2946 | exp = *expp; | |
2947 | ||
52ce6436 PH |
2948 | /* Pass one: resolve operands, saving their types and updating *pos, |
2949 | if needed. */ | |
14f9c5c9 AS |
2950 | switch (op) |
2951 | { | |
4c4b4cd2 PH |
2952 | case OP_FUNCALL: |
2953 | if (exp->elts[pc + 3].opcode == OP_VAR_VALUE | |
76a01679 JB |
2954 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
2955 | *pos += 7; | |
4c4b4cd2 PH |
2956 | else |
2957 | { | |
2958 | *pos += 3; | |
2959 | resolve_subexp (expp, pos, 0, NULL); | |
2960 | } | |
2961 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
14f9c5c9 AS |
2962 | break; |
2963 | ||
14f9c5c9 | 2964 | case UNOP_ADDR: |
4c4b4cd2 PH |
2965 | *pos += 1; |
2966 | resolve_subexp (expp, pos, 0, NULL); | |
2967 | break; | |
2968 | ||
52ce6436 PH |
2969 | case UNOP_QUAL: |
2970 | *pos += 3; | |
17466c1a | 2971 | resolve_subexp (expp, pos, 1, check_typedef (exp->elts[pc + 1].type)); |
4c4b4cd2 PH |
2972 | break; |
2973 | ||
52ce6436 | 2974 | case OP_ATR_MODULUS: |
4c4b4cd2 PH |
2975 | case OP_ATR_SIZE: |
2976 | case OP_ATR_TAG: | |
4c4b4cd2 PH |
2977 | case OP_ATR_FIRST: |
2978 | case OP_ATR_LAST: | |
2979 | case OP_ATR_LENGTH: | |
2980 | case OP_ATR_POS: | |
2981 | case OP_ATR_VAL: | |
4c4b4cd2 PH |
2982 | case OP_ATR_MIN: |
2983 | case OP_ATR_MAX: | |
52ce6436 PH |
2984 | case TERNOP_IN_RANGE: |
2985 | case BINOP_IN_BOUNDS: | |
2986 | case UNOP_IN_RANGE: | |
2987 | case OP_AGGREGATE: | |
2988 | case OP_OTHERS: | |
2989 | case OP_CHOICES: | |
2990 | case OP_POSITIONAL: | |
2991 | case OP_DISCRETE_RANGE: | |
2992 | case OP_NAME: | |
2993 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
2994 | *pos += oplen; | |
14f9c5c9 AS |
2995 | break; |
2996 | ||
2997 | case BINOP_ASSIGN: | |
2998 | { | |
4c4b4cd2 PH |
2999 | struct value *arg1; |
3000 | ||
3001 | *pos += 1; | |
3002 | arg1 = resolve_subexp (expp, pos, 0, NULL); | |
3003 | if (arg1 == NULL) | |
3004 | resolve_subexp (expp, pos, 1, NULL); | |
3005 | else | |
df407dfe | 3006 | resolve_subexp (expp, pos, 1, value_type (arg1)); |
4c4b4cd2 | 3007 | break; |
14f9c5c9 AS |
3008 | } |
3009 | ||
4c4b4cd2 | 3010 | case UNOP_CAST: |
4c4b4cd2 PH |
3011 | *pos += 3; |
3012 | nargs = 1; | |
3013 | break; | |
14f9c5c9 | 3014 | |
4c4b4cd2 PH |
3015 | case BINOP_ADD: |
3016 | case BINOP_SUB: | |
3017 | case BINOP_MUL: | |
3018 | case BINOP_DIV: | |
3019 | case BINOP_REM: | |
3020 | case BINOP_MOD: | |
3021 | case BINOP_EXP: | |
3022 | case BINOP_CONCAT: | |
3023 | case BINOP_LOGICAL_AND: | |
3024 | case BINOP_LOGICAL_OR: | |
3025 | case BINOP_BITWISE_AND: | |
3026 | case BINOP_BITWISE_IOR: | |
3027 | case BINOP_BITWISE_XOR: | |
14f9c5c9 | 3028 | |
4c4b4cd2 PH |
3029 | case BINOP_EQUAL: |
3030 | case BINOP_NOTEQUAL: | |
3031 | case BINOP_LESS: | |
3032 | case BINOP_GTR: | |
3033 | case BINOP_LEQ: | |
3034 | case BINOP_GEQ: | |
14f9c5c9 | 3035 | |
4c4b4cd2 PH |
3036 | case BINOP_REPEAT: |
3037 | case BINOP_SUBSCRIPT: | |
3038 | case BINOP_COMMA: | |
40c8aaa9 JB |
3039 | *pos += 1; |
3040 | nargs = 2; | |
3041 | break; | |
14f9c5c9 | 3042 | |
4c4b4cd2 PH |
3043 | case UNOP_NEG: |
3044 | case UNOP_PLUS: | |
3045 | case UNOP_LOGICAL_NOT: | |
3046 | case UNOP_ABS: | |
3047 | case UNOP_IND: | |
3048 | *pos += 1; | |
3049 | nargs = 1; | |
3050 | break; | |
14f9c5c9 | 3051 | |
4c4b4cd2 PH |
3052 | case OP_LONG: |
3053 | case OP_DOUBLE: | |
3054 | case OP_VAR_VALUE: | |
3055 | *pos += 4; | |
3056 | break; | |
14f9c5c9 | 3057 | |
4c4b4cd2 PH |
3058 | case OP_TYPE: |
3059 | case OP_BOOL: | |
3060 | case OP_LAST: | |
4c4b4cd2 PH |
3061 | case OP_INTERNALVAR: |
3062 | *pos += 3; | |
3063 | break; | |
14f9c5c9 | 3064 | |
4c4b4cd2 PH |
3065 | case UNOP_MEMVAL: |
3066 | *pos += 3; | |
3067 | nargs = 1; | |
3068 | break; | |
3069 | ||
67f3407f DJ |
3070 | case OP_REGISTER: |
3071 | *pos += 4 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1); | |
3072 | break; | |
3073 | ||
4c4b4cd2 PH |
3074 | case STRUCTOP_STRUCT: |
3075 | *pos += 4 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1); | |
3076 | nargs = 1; | |
3077 | break; | |
3078 | ||
4c4b4cd2 | 3079 | case TERNOP_SLICE: |
4c4b4cd2 PH |
3080 | *pos += 1; |
3081 | nargs = 3; | |
3082 | break; | |
3083 | ||
52ce6436 | 3084 | case OP_STRING: |
14f9c5c9 | 3085 | break; |
4c4b4cd2 PH |
3086 | |
3087 | default: | |
323e0a4a | 3088 | error (_("Unexpected operator during name resolution")); |
14f9c5c9 AS |
3089 | } |
3090 | ||
76a01679 | 3091 | argvec = (struct value * *) alloca (sizeof (struct value *) * (nargs + 1)); |
4c4b4cd2 PH |
3092 | for (i = 0; i < nargs; i += 1) |
3093 | argvec[i] = resolve_subexp (expp, pos, 1, NULL); | |
3094 | argvec[i] = NULL; | |
3095 | exp = *expp; | |
3096 | ||
3097 | /* Pass two: perform any resolution on principal operator. */ | |
14f9c5c9 AS |
3098 | switch (op) |
3099 | { | |
3100 | default: | |
3101 | break; | |
3102 | ||
14f9c5c9 | 3103 | case OP_VAR_VALUE: |
4c4b4cd2 | 3104 | if (SYMBOL_DOMAIN (exp->elts[pc + 2].symbol) == UNDEF_DOMAIN) |
76a01679 JB |
3105 | { |
3106 | struct ada_symbol_info *candidates; | |
3107 | int n_candidates; | |
3108 | ||
3109 | n_candidates = | |
3110 | ada_lookup_symbol_list (SYMBOL_LINKAGE_NAME | |
3111 | (exp->elts[pc + 2].symbol), | |
3112 | exp->elts[pc + 1].block, VAR_DOMAIN, | |
4eeaa230 | 3113 | &candidates); |
76a01679 JB |
3114 | |
3115 | if (n_candidates > 1) | |
3116 | { | |
3117 | /* Types tend to get re-introduced locally, so if there | |
3118 | are any local symbols that are not types, first filter | |
3119 | out all types. */ | |
3120 | int j; | |
3121 | for (j = 0; j < n_candidates; j += 1) | |
3122 | switch (SYMBOL_CLASS (candidates[j].sym)) | |
3123 | { | |
3124 | case LOC_REGISTER: | |
3125 | case LOC_ARG: | |
3126 | case LOC_REF_ARG: | |
76a01679 JB |
3127 | case LOC_REGPARM_ADDR: |
3128 | case LOC_LOCAL: | |
76a01679 | 3129 | case LOC_COMPUTED: |
76a01679 JB |
3130 | goto FoundNonType; |
3131 | default: | |
3132 | break; | |
3133 | } | |
3134 | FoundNonType: | |
3135 | if (j < n_candidates) | |
3136 | { | |
3137 | j = 0; | |
3138 | while (j < n_candidates) | |
3139 | { | |
3140 | if (SYMBOL_CLASS (candidates[j].sym) == LOC_TYPEDEF) | |
3141 | { | |
3142 | candidates[j] = candidates[n_candidates - 1]; | |
3143 | n_candidates -= 1; | |
3144 | } | |
3145 | else | |
3146 | j += 1; | |
3147 | } | |
3148 | } | |
3149 | } | |
3150 | ||
3151 | if (n_candidates == 0) | |
323e0a4a | 3152 | error (_("No definition found for %s"), |
76a01679 JB |
3153 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
3154 | else if (n_candidates == 1) | |
3155 | i = 0; | |
3156 | else if (deprocedure_p | |
3157 | && !is_nonfunction (candidates, n_candidates)) | |
3158 | { | |
06d5cf63 JB |
3159 | i = ada_resolve_function |
3160 | (candidates, n_candidates, NULL, 0, | |
3161 | SYMBOL_LINKAGE_NAME (exp->elts[pc + 2].symbol), | |
3162 | context_type); | |
76a01679 | 3163 | if (i < 0) |
323e0a4a | 3164 | error (_("Could not find a match for %s"), |
76a01679 JB |
3165 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
3166 | } | |
3167 | else | |
3168 | { | |
323e0a4a | 3169 | printf_filtered (_("Multiple matches for %s\n"), |
76a01679 JB |
3170 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
3171 | user_select_syms (candidates, n_candidates, 1); | |
3172 | i = 0; | |
3173 | } | |
3174 | ||
3175 | exp->elts[pc + 1].block = candidates[i].block; | |
3176 | exp->elts[pc + 2].symbol = candidates[i].sym; | |
1265e4aa JB |
3177 | if (innermost_block == NULL |
3178 | || contained_in (candidates[i].block, innermost_block)) | |
76a01679 JB |
3179 | innermost_block = candidates[i].block; |
3180 | } | |
3181 | ||
3182 | if (deprocedure_p | |
3183 | && (TYPE_CODE (SYMBOL_TYPE (exp->elts[pc + 2].symbol)) | |
3184 | == TYPE_CODE_FUNC)) | |
3185 | { | |
3186 | replace_operator_with_call (expp, pc, 0, 0, | |
3187 | exp->elts[pc + 2].symbol, | |
3188 | exp->elts[pc + 1].block); | |
3189 | exp = *expp; | |
3190 | } | |
14f9c5c9 AS |
3191 | break; |
3192 | ||
3193 | case OP_FUNCALL: | |
3194 | { | |
4c4b4cd2 | 3195 | if (exp->elts[pc + 3].opcode == OP_VAR_VALUE |
76a01679 | 3196 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
4c4b4cd2 PH |
3197 | { |
3198 | struct ada_symbol_info *candidates; | |
3199 | int n_candidates; | |
3200 | ||
3201 | n_candidates = | |
76a01679 JB |
3202 | ada_lookup_symbol_list (SYMBOL_LINKAGE_NAME |
3203 | (exp->elts[pc + 5].symbol), | |
3204 | exp->elts[pc + 4].block, VAR_DOMAIN, | |
4eeaa230 | 3205 | &candidates); |
4c4b4cd2 PH |
3206 | if (n_candidates == 1) |
3207 | i = 0; | |
3208 | else | |
3209 | { | |
06d5cf63 JB |
3210 | i = ada_resolve_function |
3211 | (candidates, n_candidates, | |
3212 | argvec, nargs, | |
3213 | SYMBOL_LINKAGE_NAME (exp->elts[pc + 5].symbol), | |
3214 | context_type); | |
4c4b4cd2 | 3215 | if (i < 0) |
323e0a4a | 3216 | error (_("Could not find a match for %s"), |
4c4b4cd2 PH |
3217 | SYMBOL_PRINT_NAME (exp->elts[pc + 5].symbol)); |
3218 | } | |
3219 | ||
3220 | exp->elts[pc + 4].block = candidates[i].block; | |
3221 | exp->elts[pc + 5].symbol = candidates[i].sym; | |
1265e4aa JB |
3222 | if (innermost_block == NULL |
3223 | || contained_in (candidates[i].block, innermost_block)) | |
4c4b4cd2 PH |
3224 | innermost_block = candidates[i].block; |
3225 | } | |
14f9c5c9 AS |
3226 | } |
3227 | break; | |
3228 | case BINOP_ADD: | |
3229 | case BINOP_SUB: | |
3230 | case BINOP_MUL: | |
3231 | case BINOP_DIV: | |
3232 | case BINOP_REM: | |
3233 | case BINOP_MOD: | |
3234 | case BINOP_CONCAT: | |
3235 | case BINOP_BITWISE_AND: | |
3236 | case BINOP_BITWISE_IOR: | |
3237 | case BINOP_BITWISE_XOR: | |
3238 | case BINOP_EQUAL: | |
3239 | case BINOP_NOTEQUAL: | |
3240 | case BINOP_LESS: | |
3241 | case BINOP_GTR: | |
3242 | case BINOP_LEQ: | |
3243 | case BINOP_GEQ: | |
3244 | case BINOP_EXP: | |
3245 | case UNOP_NEG: | |
3246 | case UNOP_PLUS: | |
3247 | case UNOP_LOGICAL_NOT: | |
3248 | case UNOP_ABS: | |
3249 | if (possible_user_operator_p (op, argvec)) | |
4c4b4cd2 PH |
3250 | { |
3251 | struct ada_symbol_info *candidates; | |
3252 | int n_candidates; | |
3253 | ||
3254 | n_candidates = | |
3255 | ada_lookup_symbol_list (ada_encode (ada_decoded_op_name (op)), | |
3256 | (struct block *) NULL, VAR_DOMAIN, | |
4eeaa230 | 3257 | &candidates); |
4c4b4cd2 | 3258 | i = ada_resolve_function (candidates, n_candidates, argvec, nargs, |
76a01679 | 3259 | ada_decoded_op_name (op), NULL); |
4c4b4cd2 PH |
3260 | if (i < 0) |
3261 | break; | |
3262 | ||
76a01679 JB |
3263 | replace_operator_with_call (expp, pc, nargs, 1, |
3264 | candidates[i].sym, candidates[i].block); | |
4c4b4cd2 PH |
3265 | exp = *expp; |
3266 | } | |
14f9c5c9 | 3267 | break; |
4c4b4cd2 PH |
3268 | |
3269 | case OP_TYPE: | |
b3dbf008 | 3270 | case OP_REGISTER: |
4c4b4cd2 | 3271 | return NULL; |
14f9c5c9 AS |
3272 | } |
3273 | ||
3274 | *pos = pc; | |
3275 | return evaluate_subexp_type (exp, pos); | |
3276 | } | |
3277 | ||
3278 | /* Return non-zero if formal type FTYPE matches actual type ATYPE. If | |
4c4b4cd2 | 3279 | MAY_DEREF is non-zero, the formal may be a pointer and the actual |
5b3d5b7d | 3280 | a non-pointer. */ |
14f9c5c9 | 3281 | /* The term "match" here is rather loose. The match is heuristic and |
5b3d5b7d | 3282 | liberal. */ |
14f9c5c9 AS |
3283 | |
3284 | static int | |
4dc81987 | 3285 | ada_type_match (struct type *ftype, struct type *atype, int may_deref) |
14f9c5c9 | 3286 | { |
61ee279c PH |
3287 | ftype = ada_check_typedef (ftype); |
3288 | atype = ada_check_typedef (atype); | |
14f9c5c9 AS |
3289 | |
3290 | if (TYPE_CODE (ftype) == TYPE_CODE_REF) | |
3291 | ftype = TYPE_TARGET_TYPE (ftype); | |
3292 | if (TYPE_CODE (atype) == TYPE_CODE_REF) | |
3293 | atype = TYPE_TARGET_TYPE (atype); | |
3294 | ||
d2e4a39e | 3295 | switch (TYPE_CODE (ftype)) |
14f9c5c9 AS |
3296 | { |
3297 | default: | |
5b3d5b7d | 3298 | return TYPE_CODE (ftype) == TYPE_CODE (atype); |
14f9c5c9 AS |
3299 | case TYPE_CODE_PTR: |
3300 | if (TYPE_CODE (atype) == TYPE_CODE_PTR) | |
4c4b4cd2 PH |
3301 | return ada_type_match (TYPE_TARGET_TYPE (ftype), |
3302 | TYPE_TARGET_TYPE (atype), 0); | |
d2e4a39e | 3303 | else |
1265e4aa JB |
3304 | return (may_deref |
3305 | && ada_type_match (TYPE_TARGET_TYPE (ftype), atype, 0)); | |
14f9c5c9 AS |
3306 | case TYPE_CODE_INT: |
3307 | case TYPE_CODE_ENUM: | |
3308 | case TYPE_CODE_RANGE: | |
3309 | switch (TYPE_CODE (atype)) | |
4c4b4cd2 PH |
3310 | { |
3311 | case TYPE_CODE_INT: | |
3312 | case TYPE_CODE_ENUM: | |
3313 | case TYPE_CODE_RANGE: | |
3314 | return 1; | |
3315 | default: | |
3316 | return 0; | |
3317 | } | |
14f9c5c9 AS |
3318 | |
3319 | case TYPE_CODE_ARRAY: | |
d2e4a39e | 3320 | return (TYPE_CODE (atype) == TYPE_CODE_ARRAY |
4c4b4cd2 | 3321 | || ada_is_array_descriptor_type (atype)); |
14f9c5c9 AS |
3322 | |
3323 | case TYPE_CODE_STRUCT: | |
4c4b4cd2 PH |
3324 | if (ada_is_array_descriptor_type (ftype)) |
3325 | return (TYPE_CODE (atype) == TYPE_CODE_ARRAY | |
3326 | || ada_is_array_descriptor_type (atype)); | |
14f9c5c9 | 3327 | else |
4c4b4cd2 PH |
3328 | return (TYPE_CODE (atype) == TYPE_CODE_STRUCT |
3329 | && !ada_is_array_descriptor_type (atype)); | |
14f9c5c9 AS |
3330 | |
3331 | case TYPE_CODE_UNION: | |
3332 | case TYPE_CODE_FLT: | |
3333 | return (TYPE_CODE (atype) == TYPE_CODE (ftype)); | |
3334 | } | |
3335 | } | |
3336 | ||
3337 | /* Return non-zero if the formals of FUNC "sufficiently match" the | |
3338 | vector of actual argument types ACTUALS of size N_ACTUALS. FUNC | |
3339 | may also be an enumeral, in which case it is treated as a 0- | |
4c4b4cd2 | 3340 | argument function. */ |
14f9c5c9 AS |
3341 | |
3342 | static int | |
d2e4a39e | 3343 | ada_args_match (struct symbol *func, struct value **actuals, int n_actuals) |
14f9c5c9 AS |
3344 | { |
3345 | int i; | |
d2e4a39e | 3346 | struct type *func_type = SYMBOL_TYPE (func); |
14f9c5c9 | 3347 | |
1265e4aa JB |
3348 | if (SYMBOL_CLASS (func) == LOC_CONST |
3349 | && TYPE_CODE (func_type) == TYPE_CODE_ENUM) | |
14f9c5c9 AS |
3350 | return (n_actuals == 0); |
3351 | else if (func_type == NULL || TYPE_CODE (func_type) != TYPE_CODE_FUNC) | |
3352 | return 0; | |
3353 | ||
3354 | if (TYPE_NFIELDS (func_type) != n_actuals) | |
3355 | return 0; | |
3356 | ||
3357 | for (i = 0; i < n_actuals; i += 1) | |
3358 | { | |
4c4b4cd2 | 3359 | if (actuals[i] == NULL) |
76a01679 JB |
3360 | return 0; |
3361 | else | |
3362 | { | |
5b4ee69b MS |
3363 | struct type *ftype = ada_check_typedef (TYPE_FIELD_TYPE (func_type, |
3364 | i)); | |
df407dfe | 3365 | struct type *atype = ada_check_typedef (value_type (actuals[i])); |
4c4b4cd2 | 3366 | |
76a01679 JB |
3367 | if (!ada_type_match (ftype, atype, 1)) |
3368 | return 0; | |
3369 | } | |
14f9c5c9 AS |
3370 | } |
3371 | return 1; | |
3372 | } | |
3373 | ||
3374 | /* False iff function type FUNC_TYPE definitely does not produce a value | |
3375 | compatible with type CONTEXT_TYPE. Conservatively returns 1 if | |
3376 | FUNC_TYPE is not a valid function type with a non-null return type | |
3377 | or an enumerated type. A null CONTEXT_TYPE indicates any non-void type. */ | |
3378 | ||
3379 | static int | |
d2e4a39e | 3380 | return_match (struct type *func_type, struct type *context_type) |
14f9c5c9 | 3381 | { |
d2e4a39e | 3382 | struct type *return_type; |
14f9c5c9 AS |
3383 | |
3384 | if (func_type == NULL) | |
3385 | return 1; | |
3386 | ||
4c4b4cd2 | 3387 | if (TYPE_CODE (func_type) == TYPE_CODE_FUNC) |
18af8284 | 3388 | return_type = get_base_type (TYPE_TARGET_TYPE (func_type)); |
4c4b4cd2 | 3389 | else |
18af8284 | 3390 | return_type = get_base_type (func_type); |
14f9c5c9 AS |
3391 | if (return_type == NULL) |
3392 | return 1; | |
3393 | ||
18af8284 | 3394 | context_type = get_base_type (context_type); |
14f9c5c9 AS |
3395 | |
3396 | if (TYPE_CODE (return_type) == TYPE_CODE_ENUM) | |
3397 | return context_type == NULL || return_type == context_type; | |
3398 | else if (context_type == NULL) | |
3399 | return TYPE_CODE (return_type) != TYPE_CODE_VOID; | |
3400 | else | |
3401 | return TYPE_CODE (return_type) == TYPE_CODE (context_type); | |
3402 | } | |
3403 | ||
3404 | ||
4c4b4cd2 | 3405 | /* Returns the index in SYMS[0..NSYMS-1] that contains the symbol for the |
14f9c5c9 | 3406 | function (if any) that matches the types of the NARGS arguments in |
4c4b4cd2 PH |
3407 | ARGS. If CONTEXT_TYPE is non-null and there is at least one match |
3408 | that returns that type, then eliminate matches that don't. If | |
3409 | CONTEXT_TYPE is void and there is at least one match that does not | |
3410 | return void, eliminate all matches that do. | |
3411 | ||
14f9c5c9 AS |
3412 | Asks the user if there is more than one match remaining. Returns -1 |
3413 | if there is no such symbol or none is selected. NAME is used | |
4c4b4cd2 PH |
3414 | solely for messages. May re-arrange and modify SYMS in |
3415 | the process; the index returned is for the modified vector. */ | |
14f9c5c9 | 3416 | |
4c4b4cd2 PH |
3417 | static int |
3418 | ada_resolve_function (struct ada_symbol_info syms[], | |
3419 | int nsyms, struct value **args, int nargs, | |
3420 | const char *name, struct type *context_type) | |
14f9c5c9 | 3421 | { |
30b15541 | 3422 | int fallback; |
14f9c5c9 | 3423 | int k; |
4c4b4cd2 | 3424 | int m; /* Number of hits */ |
14f9c5c9 | 3425 | |
d2e4a39e | 3426 | m = 0; |
30b15541 UW |
3427 | /* In the first pass of the loop, we only accept functions matching |
3428 | context_type. If none are found, we add a second pass of the loop | |
3429 | where every function is accepted. */ | |
3430 | for (fallback = 0; m == 0 && fallback < 2; fallback++) | |
14f9c5c9 AS |
3431 | { |
3432 | for (k = 0; k < nsyms; k += 1) | |
4c4b4cd2 | 3433 | { |
61ee279c | 3434 | struct type *type = ada_check_typedef (SYMBOL_TYPE (syms[k].sym)); |
4c4b4cd2 PH |
3435 | |
3436 | if (ada_args_match (syms[k].sym, args, nargs) | |
30b15541 | 3437 | && (fallback || return_match (type, context_type))) |
4c4b4cd2 PH |
3438 | { |
3439 | syms[m] = syms[k]; | |
3440 | m += 1; | |
3441 | } | |
3442 | } | |
14f9c5c9 AS |
3443 | } |
3444 | ||
3445 | if (m == 0) | |
3446 | return -1; | |
3447 | else if (m > 1) | |
3448 | { | |
323e0a4a | 3449 | printf_filtered (_("Multiple matches for %s\n"), name); |
4c4b4cd2 | 3450 | user_select_syms (syms, m, 1); |
14f9c5c9 AS |
3451 | return 0; |
3452 | } | |
3453 | return 0; | |
3454 | } | |
3455 | ||
4c4b4cd2 PH |
3456 | /* Returns true (non-zero) iff decoded name N0 should appear before N1 |
3457 | in a listing of choices during disambiguation (see sort_choices, below). | |
3458 | The idea is that overloadings of a subprogram name from the | |
3459 | same package should sort in their source order. We settle for ordering | |
3460 | such symbols by their trailing number (__N or $N). */ | |
3461 | ||
14f9c5c9 | 3462 | static int |
0d5cff50 | 3463 | encoded_ordered_before (const char *N0, const char *N1) |
14f9c5c9 AS |
3464 | { |
3465 | if (N1 == NULL) | |
3466 | return 0; | |
3467 | else if (N0 == NULL) | |
3468 | return 1; | |
3469 | else | |
3470 | { | |
3471 | int k0, k1; | |
5b4ee69b | 3472 | |
d2e4a39e | 3473 | for (k0 = strlen (N0) - 1; k0 > 0 && isdigit (N0[k0]); k0 -= 1) |
4c4b4cd2 | 3474 | ; |
d2e4a39e | 3475 | for (k1 = strlen (N1) - 1; k1 > 0 && isdigit (N1[k1]); k1 -= 1) |
4c4b4cd2 | 3476 | ; |
d2e4a39e | 3477 | if ((N0[k0] == '_' || N0[k0] == '$') && N0[k0 + 1] != '\000' |
4c4b4cd2 PH |
3478 | && (N1[k1] == '_' || N1[k1] == '$') && N1[k1 + 1] != '\000') |
3479 | { | |
3480 | int n0, n1; | |
5b4ee69b | 3481 | |
4c4b4cd2 PH |
3482 | n0 = k0; |
3483 | while (N0[n0] == '_' && n0 > 0 && N0[n0 - 1] == '_') | |
3484 | n0 -= 1; | |
3485 | n1 = k1; | |
3486 | while (N1[n1] == '_' && n1 > 0 && N1[n1 - 1] == '_') | |
3487 | n1 -= 1; | |
3488 | if (n0 == n1 && strncmp (N0, N1, n0) == 0) | |
3489 | return (atoi (N0 + k0 + 1) < atoi (N1 + k1 + 1)); | |
3490 | } | |
14f9c5c9 AS |
3491 | return (strcmp (N0, N1) < 0); |
3492 | } | |
3493 | } | |
d2e4a39e | 3494 | |
4c4b4cd2 PH |
3495 | /* Sort SYMS[0..NSYMS-1] to put the choices in a canonical order by the |
3496 | encoded names. */ | |
3497 | ||
d2e4a39e | 3498 | static void |
4c4b4cd2 | 3499 | sort_choices (struct ada_symbol_info syms[], int nsyms) |
14f9c5c9 | 3500 | { |
4c4b4cd2 | 3501 | int i; |
5b4ee69b | 3502 | |
d2e4a39e | 3503 | for (i = 1; i < nsyms; i += 1) |
14f9c5c9 | 3504 | { |
4c4b4cd2 | 3505 | struct ada_symbol_info sym = syms[i]; |
14f9c5c9 AS |
3506 | int j; |
3507 | ||
d2e4a39e | 3508 | for (j = i - 1; j >= 0; j -= 1) |
4c4b4cd2 PH |
3509 | { |
3510 | if (encoded_ordered_before (SYMBOL_LINKAGE_NAME (syms[j].sym), | |
3511 | SYMBOL_LINKAGE_NAME (sym.sym))) | |
3512 | break; | |
3513 | syms[j + 1] = syms[j]; | |
3514 | } | |
d2e4a39e | 3515 | syms[j + 1] = sym; |
14f9c5c9 AS |
3516 | } |
3517 | } | |
3518 | ||
4c4b4cd2 PH |
3519 | /* Given a list of NSYMS symbols in SYMS, select up to MAX_RESULTS>0 |
3520 | by asking the user (if necessary), returning the number selected, | |
3521 | and setting the first elements of SYMS items. Error if no symbols | |
3522 | selected. */ | |
14f9c5c9 AS |
3523 | |
3524 | /* NOTE: Adapted from decode_line_2 in symtab.c, with which it ought | |
4c4b4cd2 | 3525 | to be re-integrated one of these days. */ |
14f9c5c9 AS |
3526 | |
3527 | int | |
4c4b4cd2 | 3528 | user_select_syms (struct ada_symbol_info *syms, int nsyms, int max_results) |
14f9c5c9 AS |
3529 | { |
3530 | int i; | |
d2e4a39e | 3531 | int *chosen = (int *) alloca (sizeof (int) * nsyms); |
14f9c5c9 AS |
3532 | int n_chosen; |
3533 | int first_choice = (max_results == 1) ? 1 : 2; | |
717d2f5a | 3534 | const char *select_mode = multiple_symbols_select_mode (); |
14f9c5c9 AS |
3535 | |
3536 | if (max_results < 1) | |
323e0a4a | 3537 | error (_("Request to select 0 symbols!")); |
14f9c5c9 AS |
3538 | if (nsyms <= 1) |
3539 | return nsyms; | |
3540 | ||
717d2f5a JB |
3541 | if (select_mode == multiple_symbols_cancel) |
3542 | error (_("\ | |
3543 | canceled because the command is ambiguous\n\ | |
3544 | See set/show multiple-symbol.")); | |
3545 | ||
3546 | /* If select_mode is "all", then return all possible symbols. | |
3547 | Only do that if more than one symbol can be selected, of course. | |
3548 | Otherwise, display the menu as usual. */ | |
3549 | if (select_mode == multiple_symbols_all && max_results > 1) | |
3550 | return nsyms; | |
3551 | ||
323e0a4a | 3552 | printf_unfiltered (_("[0] cancel\n")); |
14f9c5c9 | 3553 | if (max_results > 1) |
323e0a4a | 3554 | printf_unfiltered (_("[1] all\n")); |
14f9c5c9 | 3555 | |
4c4b4cd2 | 3556 | sort_choices (syms, nsyms); |
14f9c5c9 AS |
3557 | |
3558 | for (i = 0; i < nsyms; i += 1) | |
3559 | { | |
4c4b4cd2 PH |
3560 | if (syms[i].sym == NULL) |
3561 | continue; | |
3562 | ||
3563 | if (SYMBOL_CLASS (syms[i].sym) == LOC_BLOCK) | |
3564 | { | |
76a01679 JB |
3565 | struct symtab_and_line sal = |
3566 | find_function_start_sal (syms[i].sym, 1); | |
5b4ee69b | 3567 | |
323e0a4a AC |
3568 | if (sal.symtab == NULL) |
3569 | printf_unfiltered (_("[%d] %s at <no source file available>:%d\n"), | |
3570 | i + first_choice, | |
3571 | SYMBOL_PRINT_NAME (syms[i].sym), | |
3572 | sal.line); | |
3573 | else | |
3574 | printf_unfiltered (_("[%d] %s at %s:%d\n"), i + first_choice, | |
3575 | SYMBOL_PRINT_NAME (syms[i].sym), | |
05cba821 JK |
3576 | symtab_to_filename_for_display (sal.symtab), |
3577 | sal.line); | |
4c4b4cd2 PH |
3578 | continue; |
3579 | } | |
d2e4a39e | 3580 | else |
4c4b4cd2 PH |
3581 | { |
3582 | int is_enumeral = | |
3583 | (SYMBOL_CLASS (syms[i].sym) == LOC_CONST | |
3584 | && SYMBOL_TYPE (syms[i].sym) != NULL | |
3585 | && TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) == TYPE_CODE_ENUM); | |
210bbc17 | 3586 | struct symtab *symtab = SYMBOL_SYMTAB (syms[i].sym); |
4c4b4cd2 PH |
3587 | |
3588 | if (SYMBOL_LINE (syms[i].sym) != 0 && symtab != NULL) | |
323e0a4a | 3589 | printf_unfiltered (_("[%d] %s at %s:%d\n"), |
4c4b4cd2 PH |
3590 | i + first_choice, |
3591 | SYMBOL_PRINT_NAME (syms[i].sym), | |
05cba821 JK |
3592 | symtab_to_filename_for_display (symtab), |
3593 | SYMBOL_LINE (syms[i].sym)); | |
76a01679 JB |
3594 | else if (is_enumeral |
3595 | && TYPE_NAME (SYMBOL_TYPE (syms[i].sym)) != NULL) | |
4c4b4cd2 | 3596 | { |
a3f17187 | 3597 | printf_unfiltered (("[%d] "), i + first_choice); |
76a01679 | 3598 | ada_print_type (SYMBOL_TYPE (syms[i].sym), NULL, |
79d43c61 | 3599 | gdb_stdout, -1, 0, &type_print_raw_options); |
323e0a4a | 3600 | printf_unfiltered (_("'(%s) (enumeral)\n"), |
4c4b4cd2 PH |
3601 | SYMBOL_PRINT_NAME (syms[i].sym)); |
3602 | } | |
3603 | else if (symtab != NULL) | |
3604 | printf_unfiltered (is_enumeral | |
323e0a4a AC |
3605 | ? _("[%d] %s in %s (enumeral)\n") |
3606 | : _("[%d] %s at %s:?\n"), | |
4c4b4cd2 PH |
3607 | i + first_choice, |
3608 | SYMBOL_PRINT_NAME (syms[i].sym), | |
05cba821 | 3609 | symtab_to_filename_for_display (symtab)); |
4c4b4cd2 PH |
3610 | else |
3611 | printf_unfiltered (is_enumeral | |
323e0a4a AC |
3612 | ? _("[%d] %s (enumeral)\n") |
3613 | : _("[%d] %s at ?\n"), | |
4c4b4cd2 PH |
3614 | i + first_choice, |
3615 | SYMBOL_PRINT_NAME (syms[i].sym)); | |
3616 | } | |
14f9c5c9 | 3617 | } |
d2e4a39e | 3618 | |
14f9c5c9 | 3619 | n_chosen = get_selections (chosen, nsyms, max_results, max_results > 1, |
4c4b4cd2 | 3620 | "overload-choice"); |
14f9c5c9 AS |
3621 | |
3622 | for (i = 0; i < n_chosen; i += 1) | |
4c4b4cd2 | 3623 | syms[i] = syms[chosen[i]]; |
14f9c5c9 AS |
3624 | |
3625 | return n_chosen; | |
3626 | } | |
3627 | ||
3628 | /* Read and validate a set of numeric choices from the user in the | |
4c4b4cd2 | 3629 | range 0 .. N_CHOICES-1. Place the results in increasing |
14f9c5c9 AS |
3630 | order in CHOICES[0 .. N-1], and return N. |
3631 | ||
3632 | The user types choices as a sequence of numbers on one line | |
3633 | separated by blanks, encoding them as follows: | |
3634 | ||
4c4b4cd2 | 3635 | + A choice of 0 means to cancel the selection, throwing an error. |
14f9c5c9 AS |
3636 | + If IS_ALL_CHOICE, a choice of 1 selects the entire set 0 .. N_CHOICES-1. |
3637 | + The user chooses k by typing k+IS_ALL_CHOICE+1. | |
3638 | ||
4c4b4cd2 | 3639 | The user is not allowed to choose more than MAX_RESULTS values. |
14f9c5c9 AS |
3640 | |
3641 | ANNOTATION_SUFFIX, if present, is used to annotate the input | |
4c4b4cd2 | 3642 | prompts (for use with the -f switch). */ |
14f9c5c9 AS |
3643 | |
3644 | int | |
d2e4a39e | 3645 | get_selections (int *choices, int n_choices, int max_results, |
4c4b4cd2 | 3646 | int is_all_choice, char *annotation_suffix) |
14f9c5c9 | 3647 | { |
d2e4a39e | 3648 | char *args; |
0bcd0149 | 3649 | char *prompt; |
14f9c5c9 AS |
3650 | int n_chosen; |
3651 | int first_choice = is_all_choice ? 2 : 1; | |
d2e4a39e | 3652 | |
14f9c5c9 AS |
3653 | prompt = getenv ("PS2"); |
3654 | if (prompt == NULL) | |
0bcd0149 | 3655 | prompt = "> "; |
14f9c5c9 | 3656 | |
0bcd0149 | 3657 | args = command_line_input (prompt, 0, annotation_suffix); |
d2e4a39e | 3658 | |
14f9c5c9 | 3659 | if (args == NULL) |
323e0a4a | 3660 | error_no_arg (_("one or more choice numbers")); |
14f9c5c9 AS |
3661 | |
3662 | n_chosen = 0; | |
76a01679 | 3663 | |
4c4b4cd2 PH |
3664 | /* Set choices[0 .. n_chosen-1] to the users' choices in ascending |
3665 | order, as given in args. Choices are validated. */ | |
14f9c5c9 AS |
3666 | while (1) |
3667 | { | |
d2e4a39e | 3668 | char *args2; |
14f9c5c9 AS |
3669 | int choice, j; |
3670 | ||
0fcd72ba | 3671 | args = skip_spaces (args); |
14f9c5c9 | 3672 | if (*args == '\0' && n_chosen == 0) |
323e0a4a | 3673 | error_no_arg (_("one or more choice numbers")); |
14f9c5c9 | 3674 | else if (*args == '\0') |
4c4b4cd2 | 3675 | break; |
14f9c5c9 AS |
3676 | |
3677 | choice = strtol (args, &args2, 10); | |
d2e4a39e | 3678 | if (args == args2 || choice < 0 |
4c4b4cd2 | 3679 | || choice > n_choices + first_choice - 1) |
323e0a4a | 3680 | error (_("Argument must be choice number")); |
14f9c5c9 AS |
3681 | args = args2; |
3682 | ||
d2e4a39e | 3683 | if (choice == 0) |
323e0a4a | 3684 | error (_("cancelled")); |
14f9c5c9 AS |
3685 | |
3686 | if (choice < first_choice) | |
4c4b4cd2 PH |
3687 | { |
3688 | n_chosen = n_choices; | |
3689 | for (j = 0; j < n_choices; j += 1) | |
3690 | choices[j] = j; | |
3691 | break; | |
3692 | } | |
14f9c5c9 AS |
3693 | choice -= first_choice; |
3694 | ||
d2e4a39e | 3695 | for (j = n_chosen - 1; j >= 0 && choice < choices[j]; j -= 1) |
4c4b4cd2 PH |
3696 | { |
3697 | } | |
14f9c5c9 AS |
3698 | |
3699 | if (j < 0 || choice != choices[j]) | |
4c4b4cd2 PH |
3700 | { |
3701 | int k; | |
5b4ee69b | 3702 | |
4c4b4cd2 PH |
3703 | for (k = n_chosen - 1; k > j; k -= 1) |
3704 | choices[k + 1] = choices[k]; | |
3705 | choices[j + 1] = choice; | |
3706 | n_chosen += 1; | |
3707 | } | |
14f9c5c9 AS |
3708 | } |
3709 | ||
3710 | if (n_chosen > max_results) | |
323e0a4a | 3711 | error (_("Select no more than %d of the above"), max_results); |
d2e4a39e | 3712 | |
14f9c5c9 AS |
3713 | return n_chosen; |
3714 | } | |
3715 | ||
4c4b4cd2 PH |
3716 | /* Replace the operator of length OPLEN at position PC in *EXPP with a call |
3717 | on the function identified by SYM and BLOCK, and taking NARGS | |
3718 | arguments. Update *EXPP as needed to hold more space. */ | |
14f9c5c9 AS |
3719 | |
3720 | static void | |
d2e4a39e | 3721 | replace_operator_with_call (struct expression **expp, int pc, int nargs, |
4c4b4cd2 | 3722 | int oplen, struct symbol *sym, |
270140bd | 3723 | const struct block *block) |
14f9c5c9 AS |
3724 | { |
3725 | /* A new expression, with 6 more elements (3 for funcall, 4 for function | |
4c4b4cd2 | 3726 | symbol, -oplen for operator being replaced). */ |
d2e4a39e | 3727 | struct expression *newexp = (struct expression *) |
8c1a34e7 | 3728 | xzalloc (sizeof (struct expression) |
4c4b4cd2 | 3729 | + EXP_ELEM_TO_BYTES ((*expp)->nelts + 7 - oplen)); |
d2e4a39e | 3730 | struct expression *exp = *expp; |
14f9c5c9 AS |
3731 | |
3732 | newexp->nelts = exp->nelts + 7 - oplen; | |
3733 | newexp->language_defn = exp->language_defn; | |
3489610d | 3734 | newexp->gdbarch = exp->gdbarch; |
14f9c5c9 | 3735 | memcpy (newexp->elts, exp->elts, EXP_ELEM_TO_BYTES (pc)); |
d2e4a39e | 3736 | memcpy (newexp->elts + pc + 7, exp->elts + pc + oplen, |
4c4b4cd2 | 3737 | EXP_ELEM_TO_BYTES (exp->nelts - pc - oplen)); |
14f9c5c9 AS |
3738 | |
3739 | newexp->elts[pc].opcode = newexp->elts[pc + 2].opcode = OP_FUNCALL; | |
3740 | newexp->elts[pc + 1].longconst = (LONGEST) nargs; | |
3741 | ||
3742 | newexp->elts[pc + 3].opcode = newexp->elts[pc + 6].opcode = OP_VAR_VALUE; | |
3743 | newexp->elts[pc + 4].block = block; | |
3744 | newexp->elts[pc + 5].symbol = sym; | |
3745 | ||
3746 | *expp = newexp; | |
aacb1f0a | 3747 | xfree (exp); |
d2e4a39e | 3748 | } |
14f9c5c9 AS |
3749 | |
3750 | /* Type-class predicates */ | |
3751 | ||
4c4b4cd2 PH |
3752 | /* True iff TYPE is numeric (i.e., an INT, RANGE (of numeric type), |
3753 | or FLOAT). */ | |
14f9c5c9 AS |
3754 | |
3755 | static int | |
d2e4a39e | 3756 | numeric_type_p (struct type *type) |
14f9c5c9 AS |
3757 | { |
3758 | if (type == NULL) | |
3759 | return 0; | |
d2e4a39e AS |
3760 | else |
3761 | { | |
3762 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3763 | { |
3764 | case TYPE_CODE_INT: | |
3765 | case TYPE_CODE_FLT: | |
3766 | return 1; | |
3767 | case TYPE_CODE_RANGE: | |
3768 | return (type == TYPE_TARGET_TYPE (type) | |
3769 | || numeric_type_p (TYPE_TARGET_TYPE (type))); | |
3770 | default: | |
3771 | return 0; | |
3772 | } | |
d2e4a39e | 3773 | } |
14f9c5c9 AS |
3774 | } |
3775 | ||
4c4b4cd2 | 3776 | /* True iff TYPE is integral (an INT or RANGE of INTs). */ |
14f9c5c9 AS |
3777 | |
3778 | static int | |
d2e4a39e | 3779 | integer_type_p (struct type *type) |
14f9c5c9 AS |
3780 | { |
3781 | if (type == NULL) | |
3782 | return 0; | |
d2e4a39e AS |
3783 | else |
3784 | { | |
3785 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3786 | { |
3787 | case TYPE_CODE_INT: | |
3788 | return 1; | |
3789 | case TYPE_CODE_RANGE: | |
3790 | return (type == TYPE_TARGET_TYPE (type) | |
3791 | || integer_type_p (TYPE_TARGET_TYPE (type))); | |
3792 | default: | |
3793 | return 0; | |
3794 | } | |
d2e4a39e | 3795 | } |
14f9c5c9 AS |
3796 | } |
3797 | ||
4c4b4cd2 | 3798 | /* True iff TYPE is scalar (INT, RANGE, FLOAT, ENUM). */ |
14f9c5c9 AS |
3799 | |
3800 | static int | |
d2e4a39e | 3801 | scalar_type_p (struct type *type) |
14f9c5c9 AS |
3802 | { |
3803 | if (type == NULL) | |
3804 | return 0; | |
d2e4a39e AS |
3805 | else |
3806 | { | |
3807 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3808 | { |
3809 | case TYPE_CODE_INT: | |
3810 | case TYPE_CODE_RANGE: | |
3811 | case TYPE_CODE_ENUM: | |
3812 | case TYPE_CODE_FLT: | |
3813 | return 1; | |
3814 | default: | |
3815 | return 0; | |
3816 | } | |
d2e4a39e | 3817 | } |
14f9c5c9 AS |
3818 | } |
3819 | ||
4c4b4cd2 | 3820 | /* True iff TYPE is discrete (INT, RANGE, ENUM). */ |
14f9c5c9 AS |
3821 | |
3822 | static int | |
d2e4a39e | 3823 | discrete_type_p (struct type *type) |
14f9c5c9 AS |
3824 | { |
3825 | if (type == NULL) | |
3826 | return 0; | |
d2e4a39e AS |
3827 | else |
3828 | { | |
3829 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3830 | { |
3831 | case TYPE_CODE_INT: | |
3832 | case TYPE_CODE_RANGE: | |
3833 | case TYPE_CODE_ENUM: | |
872f0337 | 3834 | case TYPE_CODE_BOOL: |
4c4b4cd2 PH |
3835 | return 1; |
3836 | default: | |
3837 | return 0; | |
3838 | } | |
d2e4a39e | 3839 | } |
14f9c5c9 AS |
3840 | } |
3841 | ||
4c4b4cd2 PH |
3842 | /* Returns non-zero if OP with operands in the vector ARGS could be |
3843 | a user-defined function. Errs on the side of pre-defined operators | |
3844 | (i.e., result 0). */ | |
14f9c5c9 AS |
3845 | |
3846 | static int | |
d2e4a39e | 3847 | possible_user_operator_p (enum exp_opcode op, struct value *args[]) |
14f9c5c9 | 3848 | { |
76a01679 | 3849 | struct type *type0 = |
df407dfe | 3850 | (args[0] == NULL) ? NULL : ada_check_typedef (value_type (args[0])); |
d2e4a39e | 3851 | struct type *type1 = |
df407dfe | 3852 | (args[1] == NULL) ? NULL : ada_check_typedef (value_type (args[1])); |
d2e4a39e | 3853 | |
4c4b4cd2 PH |
3854 | if (type0 == NULL) |
3855 | return 0; | |
3856 | ||
14f9c5c9 AS |
3857 | switch (op) |
3858 | { | |
3859 | default: | |
3860 | return 0; | |
3861 | ||
3862 | case BINOP_ADD: | |
3863 | case BINOP_SUB: | |
3864 | case BINOP_MUL: | |
3865 | case BINOP_DIV: | |
d2e4a39e | 3866 | return (!(numeric_type_p (type0) && numeric_type_p (type1))); |
14f9c5c9 AS |
3867 | |
3868 | case BINOP_REM: | |
3869 | case BINOP_MOD: | |
3870 | case BINOP_BITWISE_AND: | |
3871 | case BINOP_BITWISE_IOR: | |
3872 | case BINOP_BITWISE_XOR: | |
d2e4a39e | 3873 | return (!(integer_type_p (type0) && integer_type_p (type1))); |
14f9c5c9 AS |
3874 | |
3875 | case BINOP_EQUAL: | |
3876 | case BINOP_NOTEQUAL: | |
3877 | case BINOP_LESS: | |
3878 | case BINOP_GTR: | |
3879 | case BINOP_LEQ: | |
3880 | case BINOP_GEQ: | |
d2e4a39e | 3881 | return (!(scalar_type_p (type0) && scalar_type_p (type1))); |
14f9c5c9 AS |
3882 | |
3883 | case BINOP_CONCAT: | |
ee90b9ab | 3884 | return !ada_is_array_type (type0) || !ada_is_array_type (type1); |
14f9c5c9 AS |
3885 | |
3886 | case BINOP_EXP: | |
d2e4a39e | 3887 | return (!(numeric_type_p (type0) && integer_type_p (type1))); |
14f9c5c9 AS |
3888 | |
3889 | case UNOP_NEG: | |
3890 | case UNOP_PLUS: | |
3891 | case UNOP_LOGICAL_NOT: | |
d2e4a39e AS |
3892 | case UNOP_ABS: |
3893 | return (!numeric_type_p (type0)); | |
14f9c5c9 AS |
3894 | |
3895 | } | |
3896 | } | |
3897 | \f | |
4c4b4cd2 | 3898 | /* Renaming */ |
14f9c5c9 | 3899 | |
aeb5907d JB |
3900 | /* NOTES: |
3901 | ||
3902 | 1. In the following, we assume that a renaming type's name may | |
3903 | have an ___XD suffix. It would be nice if this went away at some | |
3904 | point. | |
3905 | 2. We handle both the (old) purely type-based representation of | |
3906 | renamings and the (new) variable-based encoding. At some point, | |
3907 | it is devoutly to be hoped that the former goes away | |
3908 | (FIXME: hilfinger-2007-07-09). | |
3909 | 3. Subprogram renamings are not implemented, although the XRS | |
3910 | suffix is recognized (FIXME: hilfinger-2007-07-09). */ | |
3911 | ||
3912 | /* If SYM encodes a renaming, | |
3913 | ||
3914 | <renaming> renames <renamed entity>, | |
3915 | ||
3916 | sets *LEN to the length of the renamed entity's name, | |
3917 | *RENAMED_ENTITY to that name (not null-terminated), and *RENAMING_EXPR to | |
3918 | the string describing the subcomponent selected from the renamed | |
0963b4bd | 3919 | entity. Returns ADA_NOT_RENAMING if SYM does not encode a renaming |
aeb5907d JB |
3920 | (in which case, the values of *RENAMED_ENTITY, *LEN, and *RENAMING_EXPR |
3921 | are undefined). Otherwise, returns a value indicating the category | |
3922 | of entity renamed: an object (ADA_OBJECT_RENAMING), exception | |
3923 | (ADA_EXCEPTION_RENAMING), package (ADA_PACKAGE_RENAMING), or | |
3924 | subprogram (ADA_SUBPROGRAM_RENAMING). Does no allocation; the | |
3925 | strings returned in *RENAMED_ENTITY and *RENAMING_EXPR should not be | |
3926 | deallocated. The values of RENAMED_ENTITY, LEN, or RENAMING_EXPR | |
3927 | may be NULL, in which case they are not assigned. | |
3928 | ||
3929 | [Currently, however, GCC does not generate subprogram renamings.] */ | |
3930 | ||
3931 | enum ada_renaming_category | |
3932 | ada_parse_renaming (struct symbol *sym, | |
3933 | const char **renamed_entity, int *len, | |
3934 | const char **renaming_expr) | |
3935 | { | |
3936 | enum ada_renaming_category kind; | |
3937 | const char *info; | |
3938 | const char *suffix; | |
3939 | ||
3940 | if (sym == NULL) | |
3941 | return ADA_NOT_RENAMING; | |
3942 | switch (SYMBOL_CLASS (sym)) | |
14f9c5c9 | 3943 | { |
aeb5907d JB |
3944 | default: |
3945 | return ADA_NOT_RENAMING; | |
3946 | case LOC_TYPEDEF: | |
3947 | return parse_old_style_renaming (SYMBOL_TYPE (sym), | |
3948 | renamed_entity, len, renaming_expr); | |
3949 | case LOC_LOCAL: | |
3950 | case LOC_STATIC: | |
3951 | case LOC_COMPUTED: | |
3952 | case LOC_OPTIMIZED_OUT: | |
3953 | info = strstr (SYMBOL_LINKAGE_NAME (sym), "___XR"); | |
3954 | if (info == NULL) | |
3955 | return ADA_NOT_RENAMING; | |
3956 | switch (info[5]) | |
3957 | { | |
3958 | case '_': | |
3959 | kind = ADA_OBJECT_RENAMING; | |
3960 | info += 6; | |
3961 | break; | |
3962 | case 'E': | |
3963 | kind = ADA_EXCEPTION_RENAMING; | |
3964 | info += 7; | |
3965 | break; | |
3966 | case 'P': | |
3967 | kind = ADA_PACKAGE_RENAMING; | |
3968 | info += 7; | |
3969 | break; | |
3970 | case 'S': | |
3971 | kind = ADA_SUBPROGRAM_RENAMING; | |
3972 | info += 7; | |
3973 | break; | |
3974 | default: | |
3975 | return ADA_NOT_RENAMING; | |
3976 | } | |
14f9c5c9 | 3977 | } |
4c4b4cd2 | 3978 | |
aeb5907d JB |
3979 | if (renamed_entity != NULL) |
3980 | *renamed_entity = info; | |
3981 | suffix = strstr (info, "___XE"); | |
3982 | if (suffix == NULL || suffix == info) | |
3983 | return ADA_NOT_RENAMING; | |
3984 | if (len != NULL) | |
3985 | *len = strlen (info) - strlen (suffix); | |
3986 | suffix += 5; | |
3987 | if (renaming_expr != NULL) | |
3988 | *renaming_expr = suffix; | |
3989 | return kind; | |
3990 | } | |
3991 | ||
3992 | /* Assuming TYPE encodes a renaming according to the old encoding in | |
3993 | exp_dbug.ads, returns details of that renaming in *RENAMED_ENTITY, | |
3994 | *LEN, and *RENAMING_EXPR, as for ada_parse_renaming, above. Returns | |
3995 | ADA_NOT_RENAMING otherwise. */ | |
3996 | static enum ada_renaming_category | |
3997 | parse_old_style_renaming (struct type *type, | |
3998 | const char **renamed_entity, int *len, | |
3999 | const char **renaming_expr) | |
4000 | { | |
4001 | enum ada_renaming_category kind; | |
4002 | const char *name; | |
4003 | const char *info; | |
4004 | const char *suffix; | |
14f9c5c9 | 4005 | |
aeb5907d JB |
4006 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_ENUM |
4007 | || TYPE_NFIELDS (type) != 1) | |
4008 | return ADA_NOT_RENAMING; | |
14f9c5c9 | 4009 | |
aeb5907d JB |
4010 | name = type_name_no_tag (type); |
4011 | if (name == NULL) | |
4012 | return ADA_NOT_RENAMING; | |
4013 | ||
4014 | name = strstr (name, "___XR"); | |
4015 | if (name == NULL) | |
4016 | return ADA_NOT_RENAMING; | |
4017 | switch (name[5]) | |
4018 | { | |
4019 | case '\0': | |
4020 | case '_': | |
4021 | kind = ADA_OBJECT_RENAMING; | |
4022 | break; | |
4023 | case 'E': | |
4024 | kind = ADA_EXCEPTION_RENAMING; | |
4025 | break; | |
4026 | case 'P': | |
4027 | kind = ADA_PACKAGE_RENAMING; | |
4028 | break; | |
4029 | case 'S': | |
4030 | kind = ADA_SUBPROGRAM_RENAMING; | |
4031 | break; | |
4032 | default: | |
4033 | return ADA_NOT_RENAMING; | |
4034 | } | |
14f9c5c9 | 4035 | |
aeb5907d JB |
4036 | info = TYPE_FIELD_NAME (type, 0); |
4037 | if (info == NULL) | |
4038 | return ADA_NOT_RENAMING; | |
4039 | if (renamed_entity != NULL) | |
4040 | *renamed_entity = info; | |
4041 | suffix = strstr (info, "___XE"); | |
4042 | if (renaming_expr != NULL) | |
4043 | *renaming_expr = suffix + 5; | |
4044 | if (suffix == NULL || suffix == info) | |
4045 | return ADA_NOT_RENAMING; | |
4046 | if (len != NULL) | |
4047 | *len = suffix - info; | |
4048 | return kind; | |
a5ee536b JB |
4049 | } |
4050 | ||
4051 | /* Compute the value of the given RENAMING_SYM, which is expected to | |
4052 | be a symbol encoding a renaming expression. BLOCK is the block | |
4053 | used to evaluate the renaming. */ | |
52ce6436 | 4054 | |
a5ee536b JB |
4055 | static struct value * |
4056 | ada_read_renaming_var_value (struct symbol *renaming_sym, | |
4057 | struct block *block) | |
4058 | { | |
4059 | char *sym_name; | |
4060 | struct expression *expr; | |
4061 | struct value *value; | |
4062 | struct cleanup *old_chain = NULL; | |
4063 | ||
4064 | sym_name = xstrdup (SYMBOL_LINKAGE_NAME (renaming_sym)); | |
4065 | old_chain = make_cleanup (xfree, sym_name); | |
1bb9788d | 4066 | expr = parse_exp_1 (&sym_name, 0, block, 0); |
a5ee536b JB |
4067 | make_cleanup (free_current_contents, &expr); |
4068 | value = evaluate_expression (expr); | |
4069 | ||
4070 | do_cleanups (old_chain); | |
4071 | return value; | |
4072 | } | |
14f9c5c9 | 4073 | \f |
d2e4a39e | 4074 | |
4c4b4cd2 | 4075 | /* Evaluation: Function Calls */ |
14f9c5c9 | 4076 | |
4c4b4cd2 | 4077 | /* Return an lvalue containing the value VAL. This is the identity on |
40bc484c JB |
4078 | lvalues, and otherwise has the side-effect of allocating memory |
4079 | in the inferior where a copy of the value contents is copied. */ | |
14f9c5c9 | 4080 | |
d2e4a39e | 4081 | static struct value * |
40bc484c | 4082 | ensure_lval (struct value *val) |
14f9c5c9 | 4083 | { |
40bc484c JB |
4084 | if (VALUE_LVAL (val) == not_lval |
4085 | || VALUE_LVAL (val) == lval_internalvar) | |
c3e5cd34 | 4086 | { |
df407dfe | 4087 | int len = TYPE_LENGTH (ada_check_typedef (value_type (val))); |
40bc484c JB |
4088 | const CORE_ADDR addr = |
4089 | value_as_long (value_allocate_space_in_inferior (len)); | |
c3e5cd34 | 4090 | |
40bc484c | 4091 | set_value_address (val, addr); |
a84a8a0d | 4092 | VALUE_LVAL (val) = lval_memory; |
40bc484c | 4093 | write_memory (addr, value_contents (val), len); |
c3e5cd34 | 4094 | } |
14f9c5c9 AS |
4095 | |
4096 | return val; | |
4097 | } | |
4098 | ||
4099 | /* Return the value ACTUAL, converted to be an appropriate value for a | |
4100 | formal of type FORMAL_TYPE. Use *SP as a stack pointer for | |
4101 | allocating any necessary descriptors (fat pointers), or copies of | |
4c4b4cd2 | 4102 | values not residing in memory, updating it as needed. */ |
14f9c5c9 | 4103 | |
a93c0eb6 | 4104 | struct value * |
40bc484c | 4105 | ada_convert_actual (struct value *actual, struct type *formal_type0) |
14f9c5c9 | 4106 | { |
df407dfe | 4107 | struct type *actual_type = ada_check_typedef (value_type (actual)); |
61ee279c | 4108 | struct type *formal_type = ada_check_typedef (formal_type0); |
d2e4a39e AS |
4109 | struct type *formal_target = |
4110 | TYPE_CODE (formal_type) == TYPE_CODE_PTR | |
61ee279c | 4111 | ? ada_check_typedef (TYPE_TARGET_TYPE (formal_type)) : formal_type; |
d2e4a39e AS |
4112 | struct type *actual_target = |
4113 | TYPE_CODE (actual_type) == TYPE_CODE_PTR | |
61ee279c | 4114 | ? ada_check_typedef (TYPE_TARGET_TYPE (actual_type)) : actual_type; |
14f9c5c9 | 4115 | |
4c4b4cd2 | 4116 | if (ada_is_array_descriptor_type (formal_target) |
14f9c5c9 | 4117 | && TYPE_CODE (actual_target) == TYPE_CODE_ARRAY) |
40bc484c | 4118 | return make_array_descriptor (formal_type, actual); |
a84a8a0d JB |
4119 | else if (TYPE_CODE (formal_type) == TYPE_CODE_PTR |
4120 | || TYPE_CODE (formal_type) == TYPE_CODE_REF) | |
14f9c5c9 | 4121 | { |
a84a8a0d | 4122 | struct value *result; |
5b4ee69b | 4123 | |
14f9c5c9 | 4124 | if (TYPE_CODE (formal_target) == TYPE_CODE_ARRAY |
4c4b4cd2 | 4125 | && ada_is_array_descriptor_type (actual_target)) |
a84a8a0d | 4126 | result = desc_data (actual); |
14f9c5c9 | 4127 | else if (TYPE_CODE (actual_type) != TYPE_CODE_PTR) |
4c4b4cd2 PH |
4128 | { |
4129 | if (VALUE_LVAL (actual) != lval_memory) | |
4130 | { | |
4131 | struct value *val; | |
5b4ee69b | 4132 | |
df407dfe | 4133 | actual_type = ada_check_typedef (value_type (actual)); |
4c4b4cd2 | 4134 | val = allocate_value (actual_type); |
990a07ab | 4135 | memcpy ((char *) value_contents_raw (val), |
0fd88904 | 4136 | (char *) value_contents (actual), |
4c4b4cd2 | 4137 | TYPE_LENGTH (actual_type)); |
40bc484c | 4138 | actual = ensure_lval (val); |
4c4b4cd2 | 4139 | } |
a84a8a0d | 4140 | result = value_addr (actual); |
4c4b4cd2 | 4141 | } |
a84a8a0d JB |
4142 | else |
4143 | return actual; | |
b1af9e97 | 4144 | return value_cast_pointers (formal_type, result, 0); |
14f9c5c9 AS |
4145 | } |
4146 | else if (TYPE_CODE (actual_type) == TYPE_CODE_PTR) | |
4147 | return ada_value_ind (actual); | |
4148 | ||
4149 | return actual; | |
4150 | } | |
4151 | ||
438c98a1 JB |
4152 | /* Convert VALUE (which must be an address) to a CORE_ADDR that is a pointer of |
4153 | type TYPE. This is usually an inefficient no-op except on some targets | |
4154 | (such as AVR) where the representation of a pointer and an address | |
4155 | differs. */ | |
4156 | ||
4157 | static CORE_ADDR | |
4158 | value_pointer (struct value *value, struct type *type) | |
4159 | { | |
4160 | struct gdbarch *gdbarch = get_type_arch (type); | |
4161 | unsigned len = TYPE_LENGTH (type); | |
4162 | gdb_byte *buf = alloca (len); | |
4163 | CORE_ADDR addr; | |
4164 | ||
4165 | addr = value_address (value); | |
4166 | gdbarch_address_to_pointer (gdbarch, type, buf, addr); | |
4167 | addr = extract_unsigned_integer (buf, len, gdbarch_byte_order (gdbarch)); | |
4168 | return addr; | |
4169 | } | |
4170 | ||
14f9c5c9 | 4171 | |
4c4b4cd2 PH |
4172 | /* Push a descriptor of type TYPE for array value ARR on the stack at |
4173 | *SP, updating *SP to reflect the new descriptor. Return either | |
14f9c5c9 | 4174 | an lvalue representing the new descriptor, or (if TYPE is a pointer- |
4c4b4cd2 PH |
4175 | to-descriptor type rather than a descriptor type), a struct value * |
4176 | representing a pointer to this descriptor. */ | |
14f9c5c9 | 4177 | |
d2e4a39e | 4178 | static struct value * |
40bc484c | 4179 | make_array_descriptor (struct type *type, struct value *arr) |
14f9c5c9 | 4180 | { |
d2e4a39e AS |
4181 | struct type *bounds_type = desc_bounds_type (type); |
4182 | struct type *desc_type = desc_base_type (type); | |
4183 | struct value *descriptor = allocate_value (desc_type); | |
4184 | struct value *bounds = allocate_value (bounds_type); | |
14f9c5c9 | 4185 | int i; |
d2e4a39e | 4186 | |
0963b4bd MS |
4187 | for (i = ada_array_arity (ada_check_typedef (value_type (arr))); |
4188 | i > 0; i -= 1) | |
14f9c5c9 | 4189 | { |
19f220c3 JK |
4190 | modify_field (value_type (bounds), value_contents_writeable (bounds), |
4191 | ada_array_bound (arr, i, 0), | |
4192 | desc_bound_bitpos (bounds_type, i, 0), | |
4193 | desc_bound_bitsize (bounds_type, i, 0)); | |
4194 | modify_field (value_type (bounds), value_contents_writeable (bounds), | |
4195 | ada_array_bound (arr, i, 1), | |
4196 | desc_bound_bitpos (bounds_type, i, 1), | |
4197 | desc_bound_bitsize (bounds_type, i, 1)); | |
14f9c5c9 | 4198 | } |
d2e4a39e | 4199 | |
40bc484c | 4200 | bounds = ensure_lval (bounds); |
d2e4a39e | 4201 | |
19f220c3 JK |
4202 | modify_field (value_type (descriptor), |
4203 | value_contents_writeable (descriptor), | |
4204 | value_pointer (ensure_lval (arr), | |
4205 | TYPE_FIELD_TYPE (desc_type, 0)), | |
4206 | fat_pntr_data_bitpos (desc_type), | |
4207 | fat_pntr_data_bitsize (desc_type)); | |
4208 | ||
4209 | modify_field (value_type (descriptor), | |
4210 | value_contents_writeable (descriptor), | |
4211 | value_pointer (bounds, | |
4212 | TYPE_FIELD_TYPE (desc_type, 1)), | |
4213 | fat_pntr_bounds_bitpos (desc_type), | |
4214 | fat_pntr_bounds_bitsize (desc_type)); | |
14f9c5c9 | 4215 | |
40bc484c | 4216 | descriptor = ensure_lval (descriptor); |
14f9c5c9 AS |
4217 | |
4218 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
4219 | return value_addr (descriptor); | |
4220 | else | |
4221 | return descriptor; | |
4222 | } | |
14f9c5c9 | 4223 | \f |
963a6417 | 4224 | /* Dummy definitions for an experimental caching module that is not |
0963b4bd | 4225 | * used in the public sources. */ |
96d887e8 | 4226 | |
96d887e8 PH |
4227 | static int |
4228 | lookup_cached_symbol (const char *name, domain_enum namespace, | |
2570f2b7 | 4229 | struct symbol **sym, struct block **block) |
96d887e8 PH |
4230 | { |
4231 | return 0; | |
4232 | } | |
4233 | ||
4234 | static void | |
4235 | cache_symbol (const char *name, domain_enum namespace, struct symbol *sym, | |
270140bd | 4236 | const struct block *block) |
96d887e8 PH |
4237 | { |
4238 | } | |
4c4b4cd2 PH |
4239 | \f |
4240 | /* Symbol Lookup */ | |
4241 | ||
c0431670 JB |
4242 | /* Return nonzero if wild matching should be used when searching for |
4243 | all symbols matching LOOKUP_NAME. | |
4244 | ||
4245 | LOOKUP_NAME is expected to be a symbol name after transformation | |
4246 | for Ada lookups (see ada_name_for_lookup). */ | |
4247 | ||
4248 | static int | |
4249 | should_use_wild_match (const char *lookup_name) | |
4250 | { | |
4251 | return (strstr (lookup_name, "__") == NULL); | |
4252 | } | |
4253 | ||
4c4b4cd2 PH |
4254 | /* Return the result of a standard (literal, C-like) lookup of NAME in |
4255 | given DOMAIN, visible from lexical block BLOCK. */ | |
4256 | ||
4257 | static struct symbol * | |
4258 | standard_lookup (const char *name, const struct block *block, | |
4259 | domain_enum domain) | |
4260 | { | |
acbd605d MGD |
4261 | /* Initialize it just to avoid a GCC false warning. */ |
4262 | struct symbol *sym = NULL; | |
4c4b4cd2 | 4263 | |
2570f2b7 | 4264 | if (lookup_cached_symbol (name, domain, &sym, NULL)) |
4c4b4cd2 | 4265 | return sym; |
2570f2b7 UW |
4266 | sym = lookup_symbol_in_language (name, block, domain, language_c, 0); |
4267 | cache_symbol (name, domain, sym, block_found); | |
4c4b4cd2 PH |
4268 | return sym; |
4269 | } | |
4270 | ||
4271 | ||
4272 | /* Non-zero iff there is at least one non-function/non-enumeral symbol | |
4273 | in the symbol fields of SYMS[0..N-1]. We treat enumerals as functions, | |
4274 | since they contend in overloading in the same way. */ | |
4275 | static int | |
4276 | is_nonfunction (struct ada_symbol_info syms[], int n) | |
4277 | { | |
4278 | int i; | |
4279 | ||
4280 | for (i = 0; i < n; i += 1) | |
4281 | if (TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) != TYPE_CODE_FUNC | |
4282 | && (TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) != TYPE_CODE_ENUM | |
4283 | || SYMBOL_CLASS (syms[i].sym) != LOC_CONST)) | |
14f9c5c9 AS |
4284 | return 1; |
4285 | ||
4286 | return 0; | |
4287 | } | |
4288 | ||
4289 | /* If true (non-zero), then TYPE0 and TYPE1 represent equivalent | |
4c4b4cd2 | 4290 | struct types. Otherwise, they may not. */ |
14f9c5c9 AS |
4291 | |
4292 | static int | |
d2e4a39e | 4293 | equiv_types (struct type *type0, struct type *type1) |
14f9c5c9 | 4294 | { |
d2e4a39e | 4295 | if (type0 == type1) |
14f9c5c9 | 4296 | return 1; |
d2e4a39e | 4297 | if (type0 == NULL || type1 == NULL |
14f9c5c9 AS |
4298 | || TYPE_CODE (type0) != TYPE_CODE (type1)) |
4299 | return 0; | |
d2e4a39e | 4300 | if ((TYPE_CODE (type0) == TYPE_CODE_STRUCT |
14f9c5c9 AS |
4301 | || TYPE_CODE (type0) == TYPE_CODE_ENUM) |
4302 | && ada_type_name (type0) != NULL && ada_type_name (type1) != NULL | |
4c4b4cd2 | 4303 | && strcmp (ada_type_name (type0), ada_type_name (type1)) == 0) |
14f9c5c9 | 4304 | return 1; |
d2e4a39e | 4305 | |
14f9c5c9 AS |
4306 | return 0; |
4307 | } | |
4308 | ||
4309 | /* True iff SYM0 represents the same entity as SYM1, or one that is | |
4c4b4cd2 | 4310 | no more defined than that of SYM1. */ |
14f9c5c9 AS |
4311 | |
4312 | static int | |
d2e4a39e | 4313 | lesseq_defined_than (struct symbol *sym0, struct symbol *sym1) |
14f9c5c9 AS |
4314 | { |
4315 | if (sym0 == sym1) | |
4316 | return 1; | |
176620f1 | 4317 | if (SYMBOL_DOMAIN (sym0) != SYMBOL_DOMAIN (sym1) |
14f9c5c9 AS |
4318 | || SYMBOL_CLASS (sym0) != SYMBOL_CLASS (sym1)) |
4319 | return 0; | |
4320 | ||
d2e4a39e | 4321 | switch (SYMBOL_CLASS (sym0)) |
14f9c5c9 AS |
4322 | { |
4323 | case LOC_UNDEF: | |
4324 | return 1; | |
4325 | case LOC_TYPEDEF: | |
4326 | { | |
4c4b4cd2 PH |
4327 | struct type *type0 = SYMBOL_TYPE (sym0); |
4328 | struct type *type1 = SYMBOL_TYPE (sym1); | |
0d5cff50 DE |
4329 | const char *name0 = SYMBOL_LINKAGE_NAME (sym0); |
4330 | const char *name1 = SYMBOL_LINKAGE_NAME (sym1); | |
4c4b4cd2 | 4331 | int len0 = strlen (name0); |
5b4ee69b | 4332 | |
4c4b4cd2 PH |
4333 | return |
4334 | TYPE_CODE (type0) == TYPE_CODE (type1) | |
4335 | && (equiv_types (type0, type1) | |
4336 | || (len0 < strlen (name1) && strncmp (name0, name1, len0) == 0 | |
4337 | && strncmp (name1 + len0, "___XV", 5) == 0)); | |
14f9c5c9 AS |
4338 | } |
4339 | case LOC_CONST: | |
4340 | return SYMBOL_VALUE (sym0) == SYMBOL_VALUE (sym1) | |
4c4b4cd2 | 4341 | && equiv_types (SYMBOL_TYPE (sym0), SYMBOL_TYPE (sym1)); |
d2e4a39e AS |
4342 | default: |
4343 | return 0; | |
14f9c5c9 AS |
4344 | } |
4345 | } | |
4346 | ||
4c4b4cd2 PH |
4347 | /* Append (SYM,BLOCK,SYMTAB) to the end of the array of struct ada_symbol_info |
4348 | records in OBSTACKP. Do nothing if SYM is a duplicate. */ | |
14f9c5c9 AS |
4349 | |
4350 | static void | |
76a01679 JB |
4351 | add_defn_to_vec (struct obstack *obstackp, |
4352 | struct symbol *sym, | |
2570f2b7 | 4353 | struct block *block) |
14f9c5c9 AS |
4354 | { |
4355 | int i; | |
4c4b4cd2 | 4356 | struct ada_symbol_info *prevDefns = defns_collected (obstackp, 0); |
14f9c5c9 | 4357 | |
529cad9c PH |
4358 | /* Do not try to complete stub types, as the debugger is probably |
4359 | already scanning all symbols matching a certain name at the | |
4360 | time when this function is called. Trying to replace the stub | |
4361 | type by its associated full type will cause us to restart a scan | |
4362 | which may lead to an infinite recursion. Instead, the client | |
4363 | collecting the matching symbols will end up collecting several | |
4364 | matches, with at least one of them complete. It can then filter | |
4365 | out the stub ones if needed. */ | |
4366 | ||
4c4b4cd2 PH |
4367 | for (i = num_defns_collected (obstackp) - 1; i >= 0; i -= 1) |
4368 | { | |
4369 | if (lesseq_defined_than (sym, prevDefns[i].sym)) | |
4370 | return; | |
4371 | else if (lesseq_defined_than (prevDefns[i].sym, sym)) | |
4372 | { | |
4373 | prevDefns[i].sym = sym; | |
4374 | prevDefns[i].block = block; | |
4c4b4cd2 | 4375 | return; |
76a01679 | 4376 | } |
4c4b4cd2 PH |
4377 | } |
4378 | ||
4379 | { | |
4380 | struct ada_symbol_info info; | |
4381 | ||
4382 | info.sym = sym; | |
4383 | info.block = block; | |
4c4b4cd2 PH |
4384 | obstack_grow (obstackp, &info, sizeof (struct ada_symbol_info)); |
4385 | } | |
4386 | } | |
4387 | ||
4388 | /* Number of ada_symbol_info structures currently collected in | |
4389 | current vector in *OBSTACKP. */ | |
4390 | ||
76a01679 JB |
4391 | static int |
4392 | num_defns_collected (struct obstack *obstackp) | |
4c4b4cd2 PH |
4393 | { |
4394 | return obstack_object_size (obstackp) / sizeof (struct ada_symbol_info); | |
4395 | } | |
4396 | ||
4397 | /* Vector of ada_symbol_info structures currently collected in current | |
4398 | vector in *OBSTACKP. If FINISH, close off the vector and return | |
4399 | its final address. */ | |
4400 | ||
76a01679 | 4401 | static struct ada_symbol_info * |
4c4b4cd2 PH |
4402 | defns_collected (struct obstack *obstackp, int finish) |
4403 | { | |
4404 | if (finish) | |
4405 | return obstack_finish (obstackp); | |
4406 | else | |
4407 | return (struct ada_symbol_info *) obstack_base (obstackp); | |
4408 | } | |
4409 | ||
96d887e8 | 4410 | /* Return a minimal symbol matching NAME according to Ada decoding |
2e6e0353 JB |
4411 | rules. Returns NULL if there is no such minimal symbol. Names |
4412 | prefixed with "standard__" are handled specially: "standard__" is | |
96d887e8 | 4413 | first stripped off, and only static and global symbols are searched. */ |
4c4b4cd2 | 4414 | |
96d887e8 PH |
4415 | struct minimal_symbol * |
4416 | ada_lookup_simple_minsym (const char *name) | |
4c4b4cd2 | 4417 | { |
4c4b4cd2 | 4418 | struct objfile *objfile; |
96d887e8 | 4419 | struct minimal_symbol *msymbol; |
dc4024cd | 4420 | const int wild_match_p = should_use_wild_match (name); |
4c4b4cd2 | 4421 | |
c0431670 JB |
4422 | /* Special case: If the user specifies a symbol name inside package |
4423 | Standard, do a non-wild matching of the symbol name without | |
4424 | the "standard__" prefix. This was primarily introduced in order | |
4425 | to allow the user to specifically access the standard exceptions | |
4426 | using, for instance, Standard.Constraint_Error when Constraint_Error | |
4427 | is ambiguous (due to the user defining its own Constraint_Error | |
4428 | entity inside its program). */ | |
96d887e8 | 4429 | if (strncmp (name, "standard__", sizeof ("standard__") - 1) == 0) |
c0431670 | 4430 | name += sizeof ("standard__") - 1; |
4c4b4cd2 | 4431 | |
96d887e8 PH |
4432 | ALL_MSYMBOLS (objfile, msymbol) |
4433 | { | |
dc4024cd | 4434 | if (match_name (SYMBOL_LINKAGE_NAME (msymbol), name, wild_match_p) |
96d887e8 PH |
4435 | && MSYMBOL_TYPE (msymbol) != mst_solib_trampoline) |
4436 | return msymbol; | |
4437 | } | |
4c4b4cd2 | 4438 | |
96d887e8 PH |
4439 | return NULL; |
4440 | } | |
4c4b4cd2 | 4441 | |
96d887e8 PH |
4442 | /* For all subprograms that statically enclose the subprogram of the |
4443 | selected frame, add symbols matching identifier NAME in DOMAIN | |
4444 | and their blocks to the list of data in OBSTACKP, as for | |
48b78332 JB |
4445 | ada_add_block_symbols (q.v.). If WILD_MATCH_P, treat as NAME |
4446 | with a wildcard prefix. */ | |
4c4b4cd2 | 4447 | |
96d887e8 PH |
4448 | static void |
4449 | add_symbols_from_enclosing_procs (struct obstack *obstackp, | |
76a01679 | 4450 | const char *name, domain_enum namespace, |
48b78332 | 4451 | int wild_match_p) |
96d887e8 | 4452 | { |
96d887e8 | 4453 | } |
14f9c5c9 | 4454 | |
96d887e8 PH |
4455 | /* True if TYPE is definitely an artificial type supplied to a symbol |
4456 | for which no debugging information was given in the symbol file. */ | |
14f9c5c9 | 4457 | |
96d887e8 PH |
4458 | static int |
4459 | is_nondebugging_type (struct type *type) | |
4460 | { | |
0d5cff50 | 4461 | const char *name = ada_type_name (type); |
5b4ee69b | 4462 | |
96d887e8 PH |
4463 | return (name != NULL && strcmp (name, "<variable, no debug info>") == 0); |
4464 | } | |
4c4b4cd2 | 4465 | |
8f17729f JB |
4466 | /* Return nonzero if TYPE1 and TYPE2 are two enumeration types |
4467 | that are deemed "identical" for practical purposes. | |
4468 | ||
4469 | This function assumes that TYPE1 and TYPE2 are both TYPE_CODE_ENUM | |
4470 | types and that their number of enumerals is identical (in other | |
4471 | words, TYPE_NFIELDS (type1) == TYPE_NFIELDS (type2)). */ | |
4472 | ||
4473 | static int | |
4474 | ada_identical_enum_types_p (struct type *type1, struct type *type2) | |
4475 | { | |
4476 | int i; | |
4477 | ||
4478 | /* The heuristic we use here is fairly conservative. We consider | |
4479 | that 2 enumerate types are identical if they have the same | |
4480 | number of enumerals and that all enumerals have the same | |
4481 | underlying value and name. */ | |
4482 | ||
4483 | /* All enums in the type should have an identical underlying value. */ | |
4484 | for (i = 0; i < TYPE_NFIELDS (type1); i++) | |
14e75d8e | 4485 | if (TYPE_FIELD_ENUMVAL (type1, i) != TYPE_FIELD_ENUMVAL (type2, i)) |
8f17729f JB |
4486 | return 0; |
4487 | ||
4488 | /* All enumerals should also have the same name (modulo any numerical | |
4489 | suffix). */ | |
4490 | for (i = 0; i < TYPE_NFIELDS (type1); i++) | |
4491 | { | |
0d5cff50 DE |
4492 | const char *name_1 = TYPE_FIELD_NAME (type1, i); |
4493 | const char *name_2 = TYPE_FIELD_NAME (type2, i); | |
8f17729f JB |
4494 | int len_1 = strlen (name_1); |
4495 | int len_2 = strlen (name_2); | |
4496 | ||
4497 | ada_remove_trailing_digits (TYPE_FIELD_NAME (type1, i), &len_1); | |
4498 | ada_remove_trailing_digits (TYPE_FIELD_NAME (type2, i), &len_2); | |
4499 | if (len_1 != len_2 | |
4500 | || strncmp (TYPE_FIELD_NAME (type1, i), | |
4501 | TYPE_FIELD_NAME (type2, i), | |
4502 | len_1) != 0) | |
4503 | return 0; | |
4504 | } | |
4505 | ||
4506 | return 1; | |
4507 | } | |
4508 | ||
4509 | /* Return nonzero if all the symbols in SYMS are all enumeral symbols | |
4510 | that are deemed "identical" for practical purposes. Sometimes, | |
4511 | enumerals are not strictly identical, but their types are so similar | |
4512 | that they can be considered identical. | |
4513 | ||
4514 | For instance, consider the following code: | |
4515 | ||
4516 | type Color is (Black, Red, Green, Blue, White); | |
4517 | type RGB_Color is new Color range Red .. Blue; | |
4518 | ||
4519 | Type RGB_Color is a subrange of an implicit type which is a copy | |
4520 | of type Color. If we call that implicit type RGB_ColorB ("B" is | |
4521 | for "Base Type"), then type RGB_ColorB is a copy of type Color. | |
4522 | As a result, when an expression references any of the enumeral | |
4523 | by name (Eg. "print green"), the expression is technically | |
4524 | ambiguous and the user should be asked to disambiguate. But | |
4525 | doing so would only hinder the user, since it wouldn't matter | |
4526 | what choice he makes, the outcome would always be the same. | |
4527 | So, for practical purposes, we consider them as the same. */ | |
4528 | ||
4529 | static int | |
4530 | symbols_are_identical_enums (struct ada_symbol_info *syms, int nsyms) | |
4531 | { | |
4532 | int i; | |
4533 | ||
4534 | /* Before performing a thorough comparison check of each type, | |
4535 | we perform a series of inexpensive checks. We expect that these | |
4536 | checks will quickly fail in the vast majority of cases, and thus | |
4537 | help prevent the unnecessary use of a more expensive comparison. | |
4538 | Said comparison also expects us to make some of these checks | |
4539 | (see ada_identical_enum_types_p). */ | |
4540 | ||
4541 | /* Quick check: All symbols should have an enum type. */ | |
4542 | for (i = 0; i < nsyms; i++) | |
4543 | if (TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) != TYPE_CODE_ENUM) | |
4544 | return 0; | |
4545 | ||
4546 | /* Quick check: They should all have the same value. */ | |
4547 | for (i = 1; i < nsyms; i++) | |
4548 | if (SYMBOL_VALUE (syms[i].sym) != SYMBOL_VALUE (syms[0].sym)) | |
4549 | return 0; | |
4550 | ||
4551 | /* Quick check: They should all have the same number of enumerals. */ | |
4552 | for (i = 1; i < nsyms; i++) | |
4553 | if (TYPE_NFIELDS (SYMBOL_TYPE (syms[i].sym)) | |
4554 | != TYPE_NFIELDS (SYMBOL_TYPE (syms[0].sym))) | |
4555 | return 0; | |
4556 | ||
4557 | /* All the sanity checks passed, so we might have a set of | |
4558 | identical enumeration types. Perform a more complete | |
4559 | comparison of the type of each symbol. */ | |
4560 | for (i = 1; i < nsyms; i++) | |
4561 | if (!ada_identical_enum_types_p (SYMBOL_TYPE (syms[i].sym), | |
4562 | SYMBOL_TYPE (syms[0].sym))) | |
4563 | return 0; | |
4564 | ||
4565 | return 1; | |
4566 | } | |
4567 | ||
96d887e8 PH |
4568 | /* Remove any non-debugging symbols in SYMS[0 .. NSYMS-1] that definitely |
4569 | duplicate other symbols in the list (The only case I know of where | |
4570 | this happens is when object files containing stabs-in-ecoff are | |
4571 | linked with files containing ordinary ecoff debugging symbols (or no | |
4572 | debugging symbols)). Modifies SYMS to squeeze out deleted entries. | |
4573 | Returns the number of items in the modified list. */ | |
4c4b4cd2 | 4574 | |
96d887e8 PH |
4575 | static int |
4576 | remove_extra_symbols (struct ada_symbol_info *syms, int nsyms) | |
4577 | { | |
4578 | int i, j; | |
4c4b4cd2 | 4579 | |
8f17729f JB |
4580 | /* We should never be called with less than 2 symbols, as there |
4581 | cannot be any extra symbol in that case. But it's easy to | |
4582 | handle, since we have nothing to do in that case. */ | |
4583 | if (nsyms < 2) | |
4584 | return nsyms; | |
4585 | ||
96d887e8 PH |
4586 | i = 0; |
4587 | while (i < nsyms) | |
4588 | { | |
a35ddb44 | 4589 | int remove_p = 0; |
339c13b6 JB |
4590 | |
4591 | /* If two symbols have the same name and one of them is a stub type, | |
4592 | the get rid of the stub. */ | |
4593 | ||
4594 | if (TYPE_STUB (SYMBOL_TYPE (syms[i].sym)) | |
4595 | && SYMBOL_LINKAGE_NAME (syms[i].sym) != NULL) | |
4596 | { | |
4597 | for (j = 0; j < nsyms; j++) | |
4598 | { | |
4599 | if (j != i | |
4600 | && !TYPE_STUB (SYMBOL_TYPE (syms[j].sym)) | |
4601 | && SYMBOL_LINKAGE_NAME (syms[j].sym) != NULL | |
4602 | && strcmp (SYMBOL_LINKAGE_NAME (syms[i].sym), | |
4603 | SYMBOL_LINKAGE_NAME (syms[j].sym)) == 0) | |
a35ddb44 | 4604 | remove_p = 1; |
339c13b6 JB |
4605 | } |
4606 | } | |
4607 | ||
4608 | /* Two symbols with the same name, same class and same address | |
4609 | should be identical. */ | |
4610 | ||
4611 | else if (SYMBOL_LINKAGE_NAME (syms[i].sym) != NULL | |
96d887e8 PH |
4612 | && SYMBOL_CLASS (syms[i].sym) == LOC_STATIC |
4613 | && is_nondebugging_type (SYMBOL_TYPE (syms[i].sym))) | |
4614 | { | |
4615 | for (j = 0; j < nsyms; j += 1) | |
4616 | { | |
4617 | if (i != j | |
4618 | && SYMBOL_LINKAGE_NAME (syms[j].sym) != NULL | |
4619 | && strcmp (SYMBOL_LINKAGE_NAME (syms[i].sym), | |
76a01679 | 4620 | SYMBOL_LINKAGE_NAME (syms[j].sym)) == 0 |
96d887e8 PH |
4621 | && SYMBOL_CLASS (syms[i].sym) == SYMBOL_CLASS (syms[j].sym) |
4622 | && SYMBOL_VALUE_ADDRESS (syms[i].sym) | |
4623 | == SYMBOL_VALUE_ADDRESS (syms[j].sym)) | |
a35ddb44 | 4624 | remove_p = 1; |
4c4b4cd2 | 4625 | } |
4c4b4cd2 | 4626 | } |
339c13b6 | 4627 | |
a35ddb44 | 4628 | if (remove_p) |
339c13b6 JB |
4629 | { |
4630 | for (j = i + 1; j < nsyms; j += 1) | |
4631 | syms[j - 1] = syms[j]; | |
4632 | nsyms -= 1; | |
4633 | } | |
4634 | ||
96d887e8 | 4635 | i += 1; |
14f9c5c9 | 4636 | } |
8f17729f JB |
4637 | |
4638 | /* If all the remaining symbols are identical enumerals, then | |
4639 | just keep the first one and discard the rest. | |
4640 | ||
4641 | Unlike what we did previously, we do not discard any entry | |
4642 | unless they are ALL identical. This is because the symbol | |
4643 | comparison is not a strict comparison, but rather a practical | |
4644 | comparison. If all symbols are considered identical, then | |
4645 | we can just go ahead and use the first one and discard the rest. | |
4646 | But if we cannot reduce the list to a single element, we have | |
4647 | to ask the user to disambiguate anyways. And if we have to | |
4648 | present a multiple-choice menu, it's less confusing if the list | |
4649 | isn't missing some choices that were identical and yet distinct. */ | |
4650 | if (symbols_are_identical_enums (syms, nsyms)) | |
4651 | nsyms = 1; | |
4652 | ||
96d887e8 | 4653 | return nsyms; |
14f9c5c9 AS |
4654 | } |
4655 | ||
96d887e8 PH |
4656 | /* Given a type that corresponds to a renaming entity, use the type name |
4657 | to extract the scope (package name or function name, fully qualified, | |
4658 | and following the GNAT encoding convention) where this renaming has been | |
4659 | defined. The string returned needs to be deallocated after use. */ | |
4c4b4cd2 | 4660 | |
96d887e8 PH |
4661 | static char * |
4662 | xget_renaming_scope (struct type *renaming_type) | |
14f9c5c9 | 4663 | { |
96d887e8 | 4664 | /* The renaming types adhere to the following convention: |
0963b4bd | 4665 | <scope>__<rename>___<XR extension>. |
96d887e8 PH |
4666 | So, to extract the scope, we search for the "___XR" extension, |
4667 | and then backtrack until we find the first "__". */ | |
76a01679 | 4668 | |
96d887e8 PH |
4669 | const char *name = type_name_no_tag (renaming_type); |
4670 | char *suffix = strstr (name, "___XR"); | |
4671 | char *last; | |
4672 | int scope_len; | |
4673 | char *scope; | |
14f9c5c9 | 4674 | |
96d887e8 PH |
4675 | /* Now, backtrack a bit until we find the first "__". Start looking |
4676 | at suffix - 3, as the <rename> part is at least one character long. */ | |
14f9c5c9 | 4677 | |
96d887e8 PH |
4678 | for (last = suffix - 3; last > name; last--) |
4679 | if (last[0] == '_' && last[1] == '_') | |
4680 | break; | |
76a01679 | 4681 | |
96d887e8 | 4682 | /* Make a copy of scope and return it. */ |
14f9c5c9 | 4683 | |
96d887e8 PH |
4684 | scope_len = last - name; |
4685 | scope = (char *) xmalloc ((scope_len + 1) * sizeof (char)); | |
14f9c5c9 | 4686 | |
96d887e8 PH |
4687 | strncpy (scope, name, scope_len); |
4688 | scope[scope_len] = '\0'; | |
4c4b4cd2 | 4689 | |
96d887e8 | 4690 | return scope; |
4c4b4cd2 PH |
4691 | } |
4692 | ||
96d887e8 | 4693 | /* Return nonzero if NAME corresponds to a package name. */ |
4c4b4cd2 | 4694 | |
96d887e8 PH |
4695 | static int |
4696 | is_package_name (const char *name) | |
4c4b4cd2 | 4697 | { |
96d887e8 PH |
4698 | /* Here, We take advantage of the fact that no symbols are generated |
4699 | for packages, while symbols are generated for each function. | |
4700 | So the condition for NAME represent a package becomes equivalent | |
4701 | to NAME not existing in our list of symbols. There is only one | |
4702 | small complication with library-level functions (see below). */ | |
4c4b4cd2 | 4703 | |
96d887e8 | 4704 | char *fun_name; |
76a01679 | 4705 | |
96d887e8 PH |
4706 | /* If it is a function that has not been defined at library level, |
4707 | then we should be able to look it up in the symbols. */ | |
4708 | if (standard_lookup (name, NULL, VAR_DOMAIN) != NULL) | |
4709 | return 0; | |
14f9c5c9 | 4710 | |
96d887e8 PH |
4711 | /* Library-level function names start with "_ada_". See if function |
4712 | "_ada_" followed by NAME can be found. */ | |
14f9c5c9 | 4713 | |
96d887e8 | 4714 | /* Do a quick check that NAME does not contain "__", since library-level |
e1d5a0d2 | 4715 | functions names cannot contain "__" in them. */ |
96d887e8 PH |
4716 | if (strstr (name, "__") != NULL) |
4717 | return 0; | |
4c4b4cd2 | 4718 | |
b435e160 | 4719 | fun_name = xstrprintf ("_ada_%s", name); |
14f9c5c9 | 4720 | |
96d887e8 PH |
4721 | return (standard_lookup (fun_name, NULL, VAR_DOMAIN) == NULL); |
4722 | } | |
14f9c5c9 | 4723 | |
96d887e8 | 4724 | /* Return nonzero if SYM corresponds to a renaming entity that is |
aeb5907d | 4725 | not visible from FUNCTION_NAME. */ |
14f9c5c9 | 4726 | |
96d887e8 | 4727 | static int |
0d5cff50 | 4728 | old_renaming_is_invisible (const struct symbol *sym, const char *function_name) |
96d887e8 | 4729 | { |
aeb5907d JB |
4730 | char *scope; |
4731 | ||
4732 | if (SYMBOL_CLASS (sym) != LOC_TYPEDEF) | |
4733 | return 0; | |
4734 | ||
4735 | scope = xget_renaming_scope (SYMBOL_TYPE (sym)); | |
d2e4a39e | 4736 | |
96d887e8 | 4737 | make_cleanup (xfree, scope); |
14f9c5c9 | 4738 | |
96d887e8 PH |
4739 | /* If the rename has been defined in a package, then it is visible. */ |
4740 | if (is_package_name (scope)) | |
aeb5907d | 4741 | return 0; |
14f9c5c9 | 4742 | |
96d887e8 PH |
4743 | /* Check that the rename is in the current function scope by checking |
4744 | that its name starts with SCOPE. */ | |
76a01679 | 4745 | |
96d887e8 PH |
4746 | /* If the function name starts with "_ada_", it means that it is |
4747 | a library-level function. Strip this prefix before doing the | |
4748 | comparison, as the encoding for the renaming does not contain | |
4749 | this prefix. */ | |
4750 | if (strncmp (function_name, "_ada_", 5) == 0) | |
4751 | function_name += 5; | |
f26caa11 | 4752 | |
aeb5907d | 4753 | return (strncmp (function_name, scope, strlen (scope)) != 0); |
f26caa11 PH |
4754 | } |
4755 | ||
aeb5907d JB |
4756 | /* Remove entries from SYMS that corresponds to a renaming entity that |
4757 | is not visible from the function associated with CURRENT_BLOCK or | |
4758 | that is superfluous due to the presence of more specific renaming | |
4759 | information. Places surviving symbols in the initial entries of | |
4760 | SYMS and returns the number of surviving symbols. | |
96d887e8 PH |
4761 | |
4762 | Rationale: | |
aeb5907d JB |
4763 | First, in cases where an object renaming is implemented as a |
4764 | reference variable, GNAT may produce both the actual reference | |
4765 | variable and the renaming encoding. In this case, we discard the | |
4766 | latter. | |
4767 | ||
4768 | Second, GNAT emits a type following a specified encoding for each renaming | |
96d887e8 PH |
4769 | entity. Unfortunately, STABS currently does not support the definition |
4770 | of types that are local to a given lexical block, so all renamings types | |
4771 | are emitted at library level. As a consequence, if an application | |
4772 | contains two renaming entities using the same name, and a user tries to | |
4773 | print the value of one of these entities, the result of the ada symbol | |
4774 | lookup will also contain the wrong renaming type. | |
f26caa11 | 4775 | |
96d887e8 PH |
4776 | This function partially covers for this limitation by attempting to |
4777 | remove from the SYMS list renaming symbols that should be visible | |
4778 | from CURRENT_BLOCK. However, there does not seem be a 100% reliable | |
4779 | method with the current information available. The implementation | |
4780 | below has a couple of limitations (FIXME: brobecker-2003-05-12): | |
4781 | ||
4782 | - When the user tries to print a rename in a function while there | |
4783 | is another rename entity defined in a package: Normally, the | |
4784 | rename in the function has precedence over the rename in the | |
4785 | package, so the latter should be removed from the list. This is | |
4786 | currently not the case. | |
4787 | ||
4788 | - This function will incorrectly remove valid renames if | |
4789 | the CURRENT_BLOCK corresponds to a function which symbol name | |
4790 | has been changed by an "Export" pragma. As a consequence, | |
4791 | the user will be unable to print such rename entities. */ | |
4c4b4cd2 | 4792 | |
14f9c5c9 | 4793 | static int |
aeb5907d JB |
4794 | remove_irrelevant_renamings (struct ada_symbol_info *syms, |
4795 | int nsyms, const struct block *current_block) | |
4c4b4cd2 PH |
4796 | { |
4797 | struct symbol *current_function; | |
0d5cff50 | 4798 | const char *current_function_name; |
4c4b4cd2 | 4799 | int i; |
aeb5907d JB |
4800 | int is_new_style_renaming; |
4801 | ||
4802 | /* If there is both a renaming foo___XR... encoded as a variable and | |
4803 | a simple variable foo in the same block, discard the latter. | |
0963b4bd | 4804 | First, zero out such symbols, then compress. */ |
aeb5907d JB |
4805 | is_new_style_renaming = 0; |
4806 | for (i = 0; i < nsyms; i += 1) | |
4807 | { | |
4808 | struct symbol *sym = syms[i].sym; | |
270140bd | 4809 | const struct block *block = syms[i].block; |
aeb5907d JB |
4810 | const char *name; |
4811 | const char *suffix; | |
4812 | ||
4813 | if (sym == NULL || SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
4814 | continue; | |
4815 | name = SYMBOL_LINKAGE_NAME (sym); | |
4816 | suffix = strstr (name, "___XR"); | |
4817 | ||
4818 | if (suffix != NULL) | |
4819 | { | |
4820 | int name_len = suffix - name; | |
4821 | int j; | |
5b4ee69b | 4822 | |
aeb5907d JB |
4823 | is_new_style_renaming = 1; |
4824 | for (j = 0; j < nsyms; j += 1) | |
4825 | if (i != j && syms[j].sym != NULL | |
4826 | && strncmp (name, SYMBOL_LINKAGE_NAME (syms[j].sym), | |
4827 | name_len) == 0 | |
4828 | && block == syms[j].block) | |
4829 | syms[j].sym = NULL; | |
4830 | } | |
4831 | } | |
4832 | if (is_new_style_renaming) | |
4833 | { | |
4834 | int j, k; | |
4835 | ||
4836 | for (j = k = 0; j < nsyms; j += 1) | |
4837 | if (syms[j].sym != NULL) | |
4838 | { | |
4839 | syms[k] = syms[j]; | |
4840 | k += 1; | |
4841 | } | |
4842 | return k; | |
4843 | } | |
4c4b4cd2 PH |
4844 | |
4845 | /* Extract the function name associated to CURRENT_BLOCK. | |
4846 | Abort if unable to do so. */ | |
76a01679 | 4847 | |
4c4b4cd2 PH |
4848 | if (current_block == NULL) |
4849 | return nsyms; | |
76a01679 | 4850 | |
7f0df278 | 4851 | current_function = block_linkage_function (current_block); |
4c4b4cd2 PH |
4852 | if (current_function == NULL) |
4853 | return nsyms; | |
4854 | ||
4855 | current_function_name = SYMBOL_LINKAGE_NAME (current_function); | |
4856 | if (current_function_name == NULL) | |
4857 | return nsyms; | |
4858 | ||
4859 | /* Check each of the symbols, and remove it from the list if it is | |
4860 | a type corresponding to a renaming that is out of the scope of | |
4861 | the current block. */ | |
4862 | ||
4863 | i = 0; | |
4864 | while (i < nsyms) | |
4865 | { | |
aeb5907d JB |
4866 | if (ada_parse_renaming (syms[i].sym, NULL, NULL, NULL) |
4867 | == ADA_OBJECT_RENAMING | |
4868 | && old_renaming_is_invisible (syms[i].sym, current_function_name)) | |
4c4b4cd2 PH |
4869 | { |
4870 | int j; | |
5b4ee69b | 4871 | |
aeb5907d | 4872 | for (j = i + 1; j < nsyms; j += 1) |
76a01679 | 4873 | syms[j - 1] = syms[j]; |
4c4b4cd2 PH |
4874 | nsyms -= 1; |
4875 | } | |
4876 | else | |
4877 | i += 1; | |
4878 | } | |
4879 | ||
4880 | return nsyms; | |
4881 | } | |
4882 | ||
339c13b6 JB |
4883 | /* Add to OBSTACKP all symbols from BLOCK (and its super-blocks) |
4884 | whose name and domain match NAME and DOMAIN respectively. | |
4885 | If no match was found, then extend the search to "enclosing" | |
4886 | routines (in other words, if we're inside a nested function, | |
4887 | search the symbols defined inside the enclosing functions). | |
d0a8ab18 JB |
4888 | If WILD_MATCH_P is nonzero, perform the naming matching in |
4889 | "wild" mode (see function "wild_match" for more info). | |
339c13b6 JB |
4890 | |
4891 | Note: This function assumes that OBSTACKP has 0 (zero) element in it. */ | |
4892 | ||
4893 | static void | |
4894 | ada_add_local_symbols (struct obstack *obstackp, const char *name, | |
4895 | struct block *block, domain_enum domain, | |
d0a8ab18 | 4896 | int wild_match_p) |
339c13b6 JB |
4897 | { |
4898 | int block_depth = 0; | |
4899 | ||
4900 | while (block != NULL) | |
4901 | { | |
4902 | block_depth += 1; | |
d0a8ab18 JB |
4903 | ada_add_block_symbols (obstackp, block, name, domain, NULL, |
4904 | wild_match_p); | |
339c13b6 JB |
4905 | |
4906 | /* If we found a non-function match, assume that's the one. */ | |
4907 | if (is_nonfunction (defns_collected (obstackp, 0), | |
4908 | num_defns_collected (obstackp))) | |
4909 | return; | |
4910 | ||
4911 | block = BLOCK_SUPERBLOCK (block); | |
4912 | } | |
4913 | ||
4914 | /* If no luck so far, try to find NAME as a local symbol in some lexically | |
4915 | enclosing subprogram. */ | |
4916 | if (num_defns_collected (obstackp) == 0 && block_depth > 2) | |
d0a8ab18 | 4917 | add_symbols_from_enclosing_procs (obstackp, name, domain, wild_match_p); |
339c13b6 JB |
4918 | } |
4919 | ||
ccefe4c4 | 4920 | /* An object of this type is used as the user_data argument when |
40658b94 | 4921 | calling the map_matching_symbols method. */ |
ccefe4c4 | 4922 | |
40658b94 | 4923 | struct match_data |
ccefe4c4 | 4924 | { |
40658b94 | 4925 | struct objfile *objfile; |
ccefe4c4 | 4926 | struct obstack *obstackp; |
40658b94 PH |
4927 | struct symbol *arg_sym; |
4928 | int found_sym; | |
ccefe4c4 TT |
4929 | }; |
4930 | ||
40658b94 PH |
4931 | /* A callback for add_matching_symbols that adds SYM, found in BLOCK, |
4932 | to a list of symbols. DATA0 is a pointer to a struct match_data * | |
4933 | containing the obstack that collects the symbol list, the file that SYM | |
4934 | must come from, a flag indicating whether a non-argument symbol has | |
4935 | been found in the current block, and the last argument symbol | |
4936 | passed in SYM within the current block (if any). When SYM is null, | |
4937 | marking the end of a block, the argument symbol is added if no | |
4938 | other has been found. */ | |
ccefe4c4 | 4939 | |
40658b94 PH |
4940 | static int |
4941 | aux_add_nonlocal_symbols (struct block *block, struct symbol *sym, void *data0) | |
ccefe4c4 | 4942 | { |
40658b94 PH |
4943 | struct match_data *data = (struct match_data *) data0; |
4944 | ||
4945 | if (sym == NULL) | |
4946 | { | |
4947 | if (!data->found_sym && data->arg_sym != NULL) | |
4948 | add_defn_to_vec (data->obstackp, | |
4949 | fixup_symbol_section (data->arg_sym, data->objfile), | |
4950 | block); | |
4951 | data->found_sym = 0; | |
4952 | data->arg_sym = NULL; | |
4953 | } | |
4954 | else | |
4955 | { | |
4956 | if (SYMBOL_CLASS (sym) == LOC_UNRESOLVED) | |
4957 | return 0; | |
4958 | else if (SYMBOL_IS_ARGUMENT (sym)) | |
4959 | data->arg_sym = sym; | |
4960 | else | |
4961 | { | |
4962 | data->found_sym = 1; | |
4963 | add_defn_to_vec (data->obstackp, | |
4964 | fixup_symbol_section (sym, data->objfile), | |
4965 | block); | |
4966 | } | |
4967 | } | |
4968 | return 0; | |
4969 | } | |
4970 | ||
4971 | /* Compare STRING1 to STRING2, with results as for strcmp. | |
4972 | Compatible with strcmp_iw in that strcmp_iw (STRING1, STRING2) <= 0 | |
4973 | implies compare_names (STRING1, STRING2) (they may differ as to | |
4974 | what symbols compare equal). */ | |
5b4ee69b | 4975 | |
40658b94 PH |
4976 | static int |
4977 | compare_names (const char *string1, const char *string2) | |
4978 | { | |
4979 | while (*string1 != '\0' && *string2 != '\0') | |
4980 | { | |
4981 | if (isspace (*string1) || isspace (*string2)) | |
4982 | return strcmp_iw_ordered (string1, string2); | |
4983 | if (*string1 != *string2) | |
4984 | break; | |
4985 | string1 += 1; | |
4986 | string2 += 1; | |
4987 | } | |
4988 | switch (*string1) | |
4989 | { | |
4990 | case '(': | |
4991 | return strcmp_iw_ordered (string1, string2); | |
4992 | case '_': | |
4993 | if (*string2 == '\0') | |
4994 | { | |
052874e8 | 4995 | if (is_name_suffix (string1)) |
40658b94 PH |
4996 | return 0; |
4997 | else | |
1a1d5513 | 4998 | return 1; |
40658b94 | 4999 | } |
dbb8534f | 5000 | /* FALLTHROUGH */ |
40658b94 PH |
5001 | default: |
5002 | if (*string2 == '(') | |
5003 | return strcmp_iw_ordered (string1, string2); | |
5004 | else | |
5005 | return *string1 - *string2; | |
5006 | } | |
ccefe4c4 TT |
5007 | } |
5008 | ||
339c13b6 JB |
5009 | /* Add to OBSTACKP all non-local symbols whose name and domain match |
5010 | NAME and DOMAIN respectively. The search is performed on GLOBAL_BLOCK | |
5011 | symbols if GLOBAL is non-zero, or on STATIC_BLOCK symbols otherwise. */ | |
5012 | ||
5013 | static void | |
40658b94 PH |
5014 | add_nonlocal_symbols (struct obstack *obstackp, const char *name, |
5015 | domain_enum domain, int global, | |
5016 | int is_wild_match) | |
339c13b6 JB |
5017 | { |
5018 | struct objfile *objfile; | |
40658b94 | 5019 | struct match_data data; |
339c13b6 | 5020 | |
6475f2fe | 5021 | memset (&data, 0, sizeof data); |
ccefe4c4 | 5022 | data.obstackp = obstackp; |
339c13b6 | 5023 | |
ccefe4c4 | 5024 | ALL_OBJFILES (objfile) |
40658b94 PH |
5025 | { |
5026 | data.objfile = objfile; | |
5027 | ||
5028 | if (is_wild_match) | |
5029 | objfile->sf->qf->map_matching_symbols (name, domain, objfile, global, | |
5030 | aux_add_nonlocal_symbols, &data, | |
5031 | wild_match, NULL); | |
5032 | else | |
5033 | objfile->sf->qf->map_matching_symbols (name, domain, objfile, global, | |
5034 | aux_add_nonlocal_symbols, &data, | |
5035 | full_match, compare_names); | |
5036 | } | |
5037 | ||
5038 | if (num_defns_collected (obstackp) == 0 && global && !is_wild_match) | |
5039 | { | |
5040 | ALL_OBJFILES (objfile) | |
5041 | { | |
5042 | char *name1 = alloca (strlen (name) + sizeof ("_ada_")); | |
5043 | strcpy (name1, "_ada_"); | |
5044 | strcpy (name1 + sizeof ("_ada_") - 1, name); | |
5045 | data.objfile = objfile; | |
0963b4bd MS |
5046 | objfile->sf->qf->map_matching_symbols (name1, domain, |
5047 | objfile, global, | |
5048 | aux_add_nonlocal_symbols, | |
5049 | &data, | |
40658b94 PH |
5050 | full_match, compare_names); |
5051 | } | |
5052 | } | |
339c13b6 JB |
5053 | } |
5054 | ||
4eeaa230 DE |
5055 | /* Find symbols in DOMAIN matching NAME0, in BLOCK0 and, if full_search is |
5056 | non-zero, enclosing scope and in global scopes, returning the number of | |
5057 | matches. | |
9f88c959 | 5058 | Sets *RESULTS to point to a vector of (SYM,BLOCK) tuples, |
4c4b4cd2 | 5059 | indicating the symbols found and the blocks and symbol tables (if |
4eeaa230 DE |
5060 | any) in which they were found. This vector is transient---good only to |
5061 | the next call of ada_lookup_symbol_list. | |
5062 | ||
5063 | When full_search is non-zero, any non-function/non-enumeral | |
4c4b4cd2 PH |
5064 | symbol match within the nest of blocks whose innermost member is BLOCK0, |
5065 | is the one match returned (no other matches in that or | |
d9680e73 | 5066 | enclosing blocks is returned). If there are any matches in or |
4eeaa230 DE |
5067 | surrounding BLOCK0, then these alone are returned. |
5068 | ||
9f88c959 | 5069 | Names prefixed with "standard__" are handled specially: "standard__" |
4c4b4cd2 | 5070 | is first stripped off, and only static and global symbols are searched. */ |
14f9c5c9 | 5071 | |
4eeaa230 DE |
5072 | static int |
5073 | ada_lookup_symbol_list_worker (const char *name0, const struct block *block0, | |
5074 | domain_enum namespace, | |
5075 | struct ada_symbol_info **results, | |
5076 | int full_search) | |
14f9c5c9 AS |
5077 | { |
5078 | struct symbol *sym; | |
14f9c5c9 | 5079 | struct block *block; |
4c4b4cd2 | 5080 | const char *name; |
82ccd55e | 5081 | const int wild_match_p = should_use_wild_match (name0); |
14f9c5c9 | 5082 | int cacheIfUnique; |
4c4b4cd2 | 5083 | int ndefns; |
14f9c5c9 | 5084 | |
4c4b4cd2 PH |
5085 | obstack_free (&symbol_list_obstack, NULL); |
5086 | obstack_init (&symbol_list_obstack); | |
14f9c5c9 | 5087 | |
14f9c5c9 AS |
5088 | cacheIfUnique = 0; |
5089 | ||
5090 | /* Search specified block and its superiors. */ | |
5091 | ||
4c4b4cd2 | 5092 | name = name0; |
76a01679 JB |
5093 | block = (struct block *) block0; /* FIXME: No cast ought to be |
5094 | needed, but adding const will | |
5095 | have a cascade effect. */ | |
339c13b6 JB |
5096 | |
5097 | /* Special case: If the user specifies a symbol name inside package | |
5098 | Standard, do a non-wild matching of the symbol name without | |
5099 | the "standard__" prefix. This was primarily introduced in order | |
5100 | to allow the user to specifically access the standard exceptions | |
5101 | using, for instance, Standard.Constraint_Error when Constraint_Error | |
5102 | is ambiguous (due to the user defining its own Constraint_Error | |
5103 | entity inside its program). */ | |
4c4b4cd2 PH |
5104 | if (strncmp (name0, "standard__", sizeof ("standard__") - 1) == 0) |
5105 | { | |
4c4b4cd2 PH |
5106 | block = NULL; |
5107 | name = name0 + sizeof ("standard__") - 1; | |
5108 | } | |
5109 | ||
339c13b6 | 5110 | /* Check the non-global symbols. If we have ANY match, then we're done. */ |
14f9c5c9 | 5111 | |
4eeaa230 DE |
5112 | if (block != NULL) |
5113 | { | |
5114 | if (full_search) | |
5115 | { | |
5116 | ada_add_local_symbols (&symbol_list_obstack, name, block, | |
5117 | namespace, wild_match_p); | |
5118 | } | |
5119 | else | |
5120 | { | |
5121 | /* In the !full_search case we're are being called by | |
5122 | ada_iterate_over_symbols, and we don't want to search | |
5123 | superblocks. */ | |
5124 | ada_add_block_symbols (&symbol_list_obstack, block, name, | |
5125 | namespace, NULL, wild_match_p); | |
5126 | } | |
5127 | if (num_defns_collected (&symbol_list_obstack) > 0 || !full_search) | |
5128 | goto done; | |
5129 | } | |
d2e4a39e | 5130 | |
339c13b6 JB |
5131 | /* No non-global symbols found. Check our cache to see if we have |
5132 | already performed this search before. If we have, then return | |
5133 | the same result. */ | |
5134 | ||
14f9c5c9 | 5135 | cacheIfUnique = 1; |
2570f2b7 | 5136 | if (lookup_cached_symbol (name0, namespace, &sym, &block)) |
4c4b4cd2 PH |
5137 | { |
5138 | if (sym != NULL) | |
2570f2b7 | 5139 | add_defn_to_vec (&symbol_list_obstack, sym, block); |
4c4b4cd2 PH |
5140 | goto done; |
5141 | } | |
14f9c5c9 | 5142 | |
339c13b6 JB |
5143 | /* Search symbols from all global blocks. */ |
5144 | ||
40658b94 | 5145 | add_nonlocal_symbols (&symbol_list_obstack, name, namespace, 1, |
82ccd55e | 5146 | wild_match_p); |
d2e4a39e | 5147 | |
4c4b4cd2 | 5148 | /* Now add symbols from all per-file blocks if we've gotten no hits |
339c13b6 | 5149 | (not strictly correct, but perhaps better than an error). */ |
d2e4a39e | 5150 | |
4c4b4cd2 | 5151 | if (num_defns_collected (&symbol_list_obstack) == 0) |
40658b94 | 5152 | add_nonlocal_symbols (&symbol_list_obstack, name, namespace, 0, |
82ccd55e | 5153 | wild_match_p); |
14f9c5c9 | 5154 | |
4c4b4cd2 PH |
5155 | done: |
5156 | ndefns = num_defns_collected (&symbol_list_obstack); | |
5157 | *results = defns_collected (&symbol_list_obstack, 1); | |
5158 | ||
5159 | ndefns = remove_extra_symbols (*results, ndefns); | |
5160 | ||
2ad01556 | 5161 | if (ndefns == 0 && full_search) |
2570f2b7 | 5162 | cache_symbol (name0, namespace, NULL, NULL); |
14f9c5c9 | 5163 | |
2ad01556 | 5164 | if (ndefns == 1 && full_search && cacheIfUnique) |
2570f2b7 | 5165 | cache_symbol (name0, namespace, (*results)[0].sym, (*results)[0].block); |
14f9c5c9 | 5166 | |
aeb5907d | 5167 | ndefns = remove_irrelevant_renamings (*results, ndefns, block0); |
14f9c5c9 | 5168 | |
14f9c5c9 AS |
5169 | return ndefns; |
5170 | } | |
5171 | ||
4eeaa230 DE |
5172 | /* Find symbols in DOMAIN matching NAME0, in BLOCK0 and enclosing scope and |
5173 | in global scopes, returning the number of matches, and setting *RESULTS | |
5174 | to a vector of (SYM,BLOCK) tuples. | |
5175 | See ada_lookup_symbol_list_worker for further details. */ | |
5176 | ||
5177 | int | |
5178 | ada_lookup_symbol_list (const char *name0, const struct block *block0, | |
5179 | domain_enum domain, struct ada_symbol_info **results) | |
5180 | { | |
5181 | return ada_lookup_symbol_list_worker (name0, block0, domain, results, 1); | |
5182 | } | |
5183 | ||
5184 | /* Implementation of the la_iterate_over_symbols method. */ | |
5185 | ||
5186 | static void | |
5187 | ada_iterate_over_symbols (const struct block *block, | |
5188 | const char *name, domain_enum domain, | |
5189 | symbol_found_callback_ftype *callback, | |
5190 | void *data) | |
5191 | { | |
5192 | int ndefs, i; | |
5193 | struct ada_symbol_info *results; | |
5194 | ||
5195 | ndefs = ada_lookup_symbol_list_worker (name, block, domain, &results, 0); | |
5196 | for (i = 0; i < ndefs; ++i) | |
5197 | { | |
5198 | if (! (*callback) (results[i].sym, data)) | |
5199 | break; | |
5200 | } | |
5201 | } | |
5202 | ||
f8eba3c6 TT |
5203 | /* If NAME is the name of an entity, return a string that should |
5204 | be used to look that entity up in Ada units. This string should | |
5205 | be deallocated after use using xfree. | |
5206 | ||
5207 | NAME can have any form that the "break" or "print" commands might | |
5208 | recognize. In other words, it does not have to be the "natural" | |
5209 | name, or the "encoded" name. */ | |
5210 | ||
5211 | char * | |
5212 | ada_name_for_lookup (const char *name) | |
5213 | { | |
5214 | char *canon; | |
5215 | int nlen = strlen (name); | |
5216 | ||
5217 | if (name[0] == '<' && name[nlen - 1] == '>') | |
5218 | { | |
5219 | canon = xmalloc (nlen - 1); | |
5220 | memcpy (canon, name + 1, nlen - 2); | |
5221 | canon[nlen - 2] = '\0'; | |
5222 | } | |
5223 | else | |
5224 | canon = xstrdup (ada_encode (ada_fold_name (name))); | |
5225 | return canon; | |
5226 | } | |
5227 | ||
4e5c77fe JB |
5228 | /* The result is as for ada_lookup_symbol_list with FULL_SEARCH set |
5229 | to 1, but choosing the first symbol found if there are multiple | |
5230 | choices. | |
5231 | ||
5e2336be JB |
5232 | The result is stored in *INFO, which must be non-NULL. |
5233 | If no match is found, INFO->SYM is set to NULL. */ | |
4e5c77fe JB |
5234 | |
5235 | void | |
5236 | ada_lookup_encoded_symbol (const char *name, const struct block *block, | |
5237 | domain_enum namespace, | |
5e2336be | 5238 | struct ada_symbol_info *info) |
14f9c5c9 | 5239 | { |
4c4b4cd2 | 5240 | struct ada_symbol_info *candidates; |
14f9c5c9 AS |
5241 | int n_candidates; |
5242 | ||
5e2336be JB |
5243 | gdb_assert (info != NULL); |
5244 | memset (info, 0, sizeof (struct ada_symbol_info)); | |
4e5c77fe | 5245 | |
4eeaa230 | 5246 | n_candidates = ada_lookup_symbol_list (name, block, namespace, &candidates); |
14f9c5c9 | 5247 | if (n_candidates == 0) |
4e5c77fe | 5248 | return; |
4c4b4cd2 | 5249 | |
5e2336be JB |
5250 | *info = candidates[0]; |
5251 | info->sym = fixup_symbol_section (info->sym, NULL); | |
4e5c77fe | 5252 | } |
aeb5907d JB |
5253 | |
5254 | /* Return a symbol in DOMAIN matching NAME, in BLOCK0 and enclosing | |
5255 | scope and in global scopes, or NULL if none. NAME is folded and | |
5256 | encoded first. Otherwise, the result is as for ada_lookup_symbol_list, | |
0963b4bd | 5257 | choosing the first symbol if there are multiple choices. |
4e5c77fe JB |
5258 | If IS_A_FIELD_OF_THIS is not NULL, it is set to zero. */ |
5259 | ||
aeb5907d JB |
5260 | struct symbol * |
5261 | ada_lookup_symbol (const char *name, const struct block *block0, | |
21b556f4 | 5262 | domain_enum namespace, int *is_a_field_of_this) |
aeb5907d | 5263 | { |
5e2336be | 5264 | struct ada_symbol_info info; |
4e5c77fe | 5265 | |
aeb5907d JB |
5266 | if (is_a_field_of_this != NULL) |
5267 | *is_a_field_of_this = 0; | |
5268 | ||
4e5c77fe | 5269 | ada_lookup_encoded_symbol (ada_encode (ada_fold_name (name)), |
5e2336be JB |
5270 | block0, namespace, &info); |
5271 | return info.sym; | |
4c4b4cd2 | 5272 | } |
14f9c5c9 | 5273 | |
4c4b4cd2 PH |
5274 | static struct symbol * |
5275 | ada_lookup_symbol_nonlocal (const char *name, | |
76a01679 | 5276 | const struct block *block, |
21b556f4 | 5277 | const domain_enum domain) |
4c4b4cd2 | 5278 | { |
94af9270 | 5279 | return ada_lookup_symbol (name, block_static_block (block), domain, NULL); |
14f9c5c9 AS |
5280 | } |
5281 | ||
5282 | ||
4c4b4cd2 PH |
5283 | /* True iff STR is a possible encoded suffix of a normal Ada name |
5284 | that is to be ignored for matching purposes. Suffixes of parallel | |
5285 | names (e.g., XVE) are not included here. Currently, the possible suffixes | |
5823c3ef | 5286 | are given by any of the regular expressions: |
4c4b4cd2 | 5287 | |
babe1480 JB |
5288 | [.$][0-9]+ [nested subprogram suffix, on platforms such as GNU/Linux] |
5289 | ___[0-9]+ [nested subprogram suffix, on platforms such as HP/UX] | |
9ac7f98e | 5290 | TKB [subprogram suffix for task bodies] |
babe1480 | 5291 | _E[0-9]+[bs]$ [protected object entry suffixes] |
61ee279c | 5292 | (X[nb]*)?((\$|__)[0-9](_?[0-9]+)|___(JM|LJM|X([FDBUP].*|R[^T]?)))?$ |
babe1480 JB |
5293 | |
5294 | Also, any leading "__[0-9]+" sequence is skipped before the suffix | |
5295 | match is performed. This sequence is used to differentiate homonyms, | |
5296 | is an optional part of a valid name suffix. */ | |
4c4b4cd2 | 5297 | |
14f9c5c9 | 5298 | static int |
d2e4a39e | 5299 | is_name_suffix (const char *str) |
14f9c5c9 AS |
5300 | { |
5301 | int k; | |
4c4b4cd2 PH |
5302 | const char *matching; |
5303 | const int len = strlen (str); | |
5304 | ||
babe1480 JB |
5305 | /* Skip optional leading __[0-9]+. */ |
5306 | ||
4c4b4cd2 PH |
5307 | if (len > 3 && str[0] == '_' && str[1] == '_' && isdigit (str[2])) |
5308 | { | |
babe1480 JB |
5309 | str += 3; |
5310 | while (isdigit (str[0])) | |
5311 | str += 1; | |
4c4b4cd2 | 5312 | } |
babe1480 JB |
5313 | |
5314 | /* [.$][0-9]+ */ | |
4c4b4cd2 | 5315 | |
babe1480 | 5316 | if (str[0] == '.' || str[0] == '$') |
4c4b4cd2 | 5317 | { |
babe1480 | 5318 | matching = str + 1; |
4c4b4cd2 PH |
5319 | while (isdigit (matching[0])) |
5320 | matching += 1; | |
5321 | if (matching[0] == '\0') | |
5322 | return 1; | |
5323 | } | |
5324 | ||
5325 | /* ___[0-9]+ */ | |
babe1480 | 5326 | |
4c4b4cd2 PH |
5327 | if (len > 3 && str[0] == '_' && str[1] == '_' && str[2] == '_') |
5328 | { | |
5329 | matching = str + 3; | |
5330 | while (isdigit (matching[0])) | |
5331 | matching += 1; | |
5332 | if (matching[0] == '\0') | |
5333 | return 1; | |
5334 | } | |
5335 | ||
9ac7f98e JB |
5336 | /* "TKB" suffixes are used for subprograms implementing task bodies. */ |
5337 | ||
5338 | if (strcmp (str, "TKB") == 0) | |
5339 | return 1; | |
5340 | ||
529cad9c PH |
5341 | #if 0 |
5342 | /* FIXME: brobecker/2005-09-23: Protected Object subprograms end | |
0963b4bd MS |
5343 | with a N at the end. Unfortunately, the compiler uses the same |
5344 | convention for other internal types it creates. So treating | |
529cad9c | 5345 | all entity names that end with an "N" as a name suffix causes |
0963b4bd MS |
5346 | some regressions. For instance, consider the case of an enumerated |
5347 | type. To support the 'Image attribute, it creates an array whose | |
529cad9c PH |
5348 | name ends with N. |
5349 | Having a single character like this as a suffix carrying some | |
0963b4bd | 5350 | information is a bit risky. Perhaps we should change the encoding |
529cad9c PH |
5351 | to be something like "_N" instead. In the meantime, do not do |
5352 | the following check. */ | |
5353 | /* Protected Object Subprograms */ | |
5354 | if (len == 1 && str [0] == 'N') | |
5355 | return 1; | |
5356 | #endif | |
5357 | ||
5358 | /* _E[0-9]+[bs]$ */ | |
5359 | if (len > 3 && str[0] == '_' && str [1] == 'E' && isdigit (str[2])) | |
5360 | { | |
5361 | matching = str + 3; | |
5362 | while (isdigit (matching[0])) | |
5363 | matching += 1; | |
5364 | if ((matching[0] == 'b' || matching[0] == 's') | |
5365 | && matching [1] == '\0') | |
5366 | return 1; | |
5367 | } | |
5368 | ||
4c4b4cd2 PH |
5369 | /* ??? We should not modify STR directly, as we are doing below. This |
5370 | is fine in this case, but may become problematic later if we find | |
5371 | that this alternative did not work, and want to try matching | |
5372 | another one from the begining of STR. Since we modified it, we | |
5373 | won't be able to find the begining of the string anymore! */ | |
14f9c5c9 AS |
5374 | if (str[0] == 'X') |
5375 | { | |
5376 | str += 1; | |
d2e4a39e | 5377 | while (str[0] != '_' && str[0] != '\0') |
4c4b4cd2 PH |
5378 | { |
5379 | if (str[0] != 'n' && str[0] != 'b') | |
5380 | return 0; | |
5381 | str += 1; | |
5382 | } | |
14f9c5c9 | 5383 | } |
babe1480 | 5384 | |
14f9c5c9 AS |
5385 | if (str[0] == '\000') |
5386 | return 1; | |
babe1480 | 5387 | |
d2e4a39e | 5388 | if (str[0] == '_') |
14f9c5c9 AS |
5389 | { |
5390 | if (str[1] != '_' || str[2] == '\000') | |
4c4b4cd2 | 5391 | return 0; |
d2e4a39e | 5392 | if (str[2] == '_') |
4c4b4cd2 | 5393 | { |
61ee279c PH |
5394 | if (strcmp (str + 3, "JM") == 0) |
5395 | return 1; | |
5396 | /* FIXME: brobecker/2004-09-30: GNAT will soon stop using | |
5397 | the LJM suffix in favor of the JM one. But we will | |
5398 | still accept LJM as a valid suffix for a reasonable | |
5399 | amount of time, just to allow ourselves to debug programs | |
5400 | compiled using an older version of GNAT. */ | |
4c4b4cd2 PH |
5401 | if (strcmp (str + 3, "LJM") == 0) |
5402 | return 1; | |
5403 | if (str[3] != 'X') | |
5404 | return 0; | |
1265e4aa JB |
5405 | if (str[4] == 'F' || str[4] == 'D' || str[4] == 'B' |
5406 | || str[4] == 'U' || str[4] == 'P') | |
4c4b4cd2 PH |
5407 | return 1; |
5408 | if (str[4] == 'R' && str[5] != 'T') | |
5409 | return 1; | |
5410 | return 0; | |
5411 | } | |
5412 | if (!isdigit (str[2])) | |
5413 | return 0; | |
5414 | for (k = 3; str[k] != '\0'; k += 1) | |
5415 | if (!isdigit (str[k]) && str[k] != '_') | |
5416 | return 0; | |
14f9c5c9 AS |
5417 | return 1; |
5418 | } | |
4c4b4cd2 | 5419 | if (str[0] == '$' && isdigit (str[1])) |
14f9c5c9 | 5420 | { |
4c4b4cd2 PH |
5421 | for (k = 2; str[k] != '\0'; k += 1) |
5422 | if (!isdigit (str[k]) && str[k] != '_') | |
5423 | return 0; | |
14f9c5c9 AS |
5424 | return 1; |
5425 | } | |
5426 | return 0; | |
5427 | } | |
d2e4a39e | 5428 | |
aeb5907d JB |
5429 | /* Return non-zero if the string starting at NAME and ending before |
5430 | NAME_END contains no capital letters. */ | |
529cad9c PH |
5431 | |
5432 | static int | |
5433 | is_valid_name_for_wild_match (const char *name0) | |
5434 | { | |
5435 | const char *decoded_name = ada_decode (name0); | |
5436 | int i; | |
5437 | ||
5823c3ef JB |
5438 | /* If the decoded name starts with an angle bracket, it means that |
5439 | NAME0 does not follow the GNAT encoding format. It should then | |
5440 | not be allowed as a possible wild match. */ | |
5441 | if (decoded_name[0] == '<') | |
5442 | return 0; | |
5443 | ||
529cad9c PH |
5444 | for (i=0; decoded_name[i] != '\0'; i++) |
5445 | if (isalpha (decoded_name[i]) && !islower (decoded_name[i])) | |
5446 | return 0; | |
5447 | ||
5448 | return 1; | |
5449 | } | |
5450 | ||
73589123 PH |
5451 | /* Advance *NAMEP to next occurrence of TARGET0 in the string NAME0 |
5452 | that could start a simple name. Assumes that *NAMEP points into | |
5453 | the string beginning at NAME0. */ | |
4c4b4cd2 | 5454 | |
14f9c5c9 | 5455 | static int |
73589123 | 5456 | advance_wild_match (const char **namep, const char *name0, int target0) |
14f9c5c9 | 5457 | { |
73589123 | 5458 | const char *name = *namep; |
5b4ee69b | 5459 | |
5823c3ef | 5460 | while (1) |
14f9c5c9 | 5461 | { |
aa27d0b3 | 5462 | int t0, t1; |
73589123 PH |
5463 | |
5464 | t0 = *name; | |
5465 | if (t0 == '_') | |
5466 | { | |
5467 | t1 = name[1]; | |
5468 | if ((t1 >= 'a' && t1 <= 'z') || (t1 >= '0' && t1 <= '9')) | |
5469 | { | |
5470 | name += 1; | |
5471 | if (name == name0 + 5 && strncmp (name0, "_ada", 4) == 0) | |
5472 | break; | |
5473 | else | |
5474 | name += 1; | |
5475 | } | |
aa27d0b3 JB |
5476 | else if (t1 == '_' && ((name[2] >= 'a' && name[2] <= 'z') |
5477 | || name[2] == target0)) | |
73589123 PH |
5478 | { |
5479 | name += 2; | |
5480 | break; | |
5481 | } | |
5482 | else | |
5483 | return 0; | |
5484 | } | |
5485 | else if ((t0 >= 'a' && t0 <= 'z') || (t0 >= '0' && t0 <= '9')) | |
5486 | name += 1; | |
5487 | else | |
5823c3ef | 5488 | return 0; |
73589123 PH |
5489 | } |
5490 | ||
5491 | *namep = name; | |
5492 | return 1; | |
5493 | } | |
5494 | ||
5495 | /* Return 0 iff NAME encodes a name of the form prefix.PATN. Ignores any | |
5496 | informational suffixes of NAME (i.e., for which is_name_suffix is | |
5497 | true). Assumes that PATN is a lower-cased Ada simple name. */ | |
5498 | ||
5499 | static int | |
5500 | wild_match (const char *name, const char *patn) | |
5501 | { | |
22e048c9 | 5502 | const char *p; |
73589123 PH |
5503 | const char *name0 = name; |
5504 | ||
5505 | while (1) | |
5506 | { | |
5507 | const char *match = name; | |
5508 | ||
5509 | if (*name == *patn) | |
5510 | { | |
5511 | for (name += 1, p = patn + 1; *p != '\0'; name += 1, p += 1) | |
5512 | if (*p != *name) | |
5513 | break; | |
5514 | if (*p == '\0' && is_name_suffix (name)) | |
5515 | return match != name0 && !is_valid_name_for_wild_match (name0); | |
5516 | ||
5517 | if (name[-1] == '_') | |
5518 | name -= 1; | |
5519 | } | |
5520 | if (!advance_wild_match (&name, name0, *patn)) | |
5521 | return 1; | |
96d887e8 | 5522 | } |
96d887e8 PH |
5523 | } |
5524 | ||
40658b94 PH |
5525 | /* Returns 0 iff symbol name SYM_NAME matches SEARCH_NAME, apart from |
5526 | informational suffix. */ | |
5527 | ||
c4d840bd PH |
5528 | static int |
5529 | full_match (const char *sym_name, const char *search_name) | |
5530 | { | |
40658b94 | 5531 | return !match_name (sym_name, search_name, 0); |
c4d840bd PH |
5532 | } |
5533 | ||
5534 | ||
96d887e8 PH |
5535 | /* Add symbols from BLOCK matching identifier NAME in DOMAIN to |
5536 | vector *defn_symbols, updating the list of symbols in OBSTACKP | |
0963b4bd | 5537 | (if necessary). If WILD, treat as NAME with a wildcard prefix. |
4eeaa230 | 5538 | OBJFILE is the section containing BLOCK. */ |
96d887e8 PH |
5539 | |
5540 | static void | |
5541 | ada_add_block_symbols (struct obstack *obstackp, | |
76a01679 | 5542 | struct block *block, const char *name, |
96d887e8 | 5543 | domain_enum domain, struct objfile *objfile, |
2570f2b7 | 5544 | int wild) |
96d887e8 | 5545 | { |
8157b174 | 5546 | struct block_iterator iter; |
96d887e8 PH |
5547 | int name_len = strlen (name); |
5548 | /* A matching argument symbol, if any. */ | |
5549 | struct symbol *arg_sym; | |
5550 | /* Set true when we find a matching non-argument symbol. */ | |
5551 | int found_sym; | |
5552 | struct symbol *sym; | |
5553 | ||
5554 | arg_sym = NULL; | |
5555 | found_sym = 0; | |
5556 | if (wild) | |
5557 | { | |
8157b174 TT |
5558 | for (sym = block_iter_match_first (block, name, wild_match, &iter); |
5559 | sym != NULL; sym = block_iter_match_next (name, wild_match, &iter)) | |
76a01679 | 5560 | { |
5eeb2539 AR |
5561 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
5562 | SYMBOL_DOMAIN (sym), domain) | |
73589123 | 5563 | && wild_match (SYMBOL_LINKAGE_NAME (sym), name) == 0) |
76a01679 | 5564 | { |
2a2d4dc3 AS |
5565 | if (SYMBOL_CLASS (sym) == LOC_UNRESOLVED) |
5566 | continue; | |
5567 | else if (SYMBOL_IS_ARGUMENT (sym)) | |
5568 | arg_sym = sym; | |
5569 | else | |
5570 | { | |
76a01679 JB |
5571 | found_sym = 1; |
5572 | add_defn_to_vec (obstackp, | |
5573 | fixup_symbol_section (sym, objfile), | |
2570f2b7 | 5574 | block); |
76a01679 JB |
5575 | } |
5576 | } | |
5577 | } | |
96d887e8 PH |
5578 | } |
5579 | else | |
5580 | { | |
8157b174 TT |
5581 | for (sym = block_iter_match_first (block, name, full_match, &iter); |
5582 | sym != NULL; sym = block_iter_match_next (name, full_match, &iter)) | |
76a01679 | 5583 | { |
5eeb2539 AR |
5584 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
5585 | SYMBOL_DOMAIN (sym), domain)) | |
76a01679 | 5586 | { |
c4d840bd PH |
5587 | if (SYMBOL_CLASS (sym) != LOC_UNRESOLVED) |
5588 | { | |
5589 | if (SYMBOL_IS_ARGUMENT (sym)) | |
5590 | arg_sym = sym; | |
5591 | else | |
2a2d4dc3 | 5592 | { |
c4d840bd PH |
5593 | found_sym = 1; |
5594 | add_defn_to_vec (obstackp, | |
5595 | fixup_symbol_section (sym, objfile), | |
5596 | block); | |
2a2d4dc3 | 5597 | } |
c4d840bd | 5598 | } |
76a01679 JB |
5599 | } |
5600 | } | |
96d887e8 PH |
5601 | } |
5602 | ||
5603 | if (!found_sym && arg_sym != NULL) | |
5604 | { | |
76a01679 JB |
5605 | add_defn_to_vec (obstackp, |
5606 | fixup_symbol_section (arg_sym, objfile), | |
2570f2b7 | 5607 | block); |
96d887e8 PH |
5608 | } |
5609 | ||
5610 | if (!wild) | |
5611 | { | |
5612 | arg_sym = NULL; | |
5613 | found_sym = 0; | |
5614 | ||
5615 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
76a01679 | 5616 | { |
5eeb2539 AR |
5617 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
5618 | SYMBOL_DOMAIN (sym), domain)) | |
76a01679 JB |
5619 | { |
5620 | int cmp; | |
5621 | ||
5622 | cmp = (int) '_' - (int) SYMBOL_LINKAGE_NAME (sym)[0]; | |
5623 | if (cmp == 0) | |
5624 | { | |
5625 | cmp = strncmp ("_ada_", SYMBOL_LINKAGE_NAME (sym), 5); | |
5626 | if (cmp == 0) | |
5627 | cmp = strncmp (name, SYMBOL_LINKAGE_NAME (sym) + 5, | |
5628 | name_len); | |
5629 | } | |
5630 | ||
5631 | if (cmp == 0 | |
5632 | && is_name_suffix (SYMBOL_LINKAGE_NAME (sym) + name_len + 5)) | |
5633 | { | |
2a2d4dc3 AS |
5634 | if (SYMBOL_CLASS (sym) != LOC_UNRESOLVED) |
5635 | { | |
5636 | if (SYMBOL_IS_ARGUMENT (sym)) | |
5637 | arg_sym = sym; | |
5638 | else | |
5639 | { | |
5640 | found_sym = 1; | |
5641 | add_defn_to_vec (obstackp, | |
5642 | fixup_symbol_section (sym, objfile), | |
5643 | block); | |
5644 | } | |
5645 | } | |
76a01679 JB |
5646 | } |
5647 | } | |
76a01679 | 5648 | } |
96d887e8 PH |
5649 | |
5650 | /* NOTE: This really shouldn't be needed for _ada_ symbols. | |
5651 | They aren't parameters, right? */ | |
5652 | if (!found_sym && arg_sym != NULL) | |
5653 | { | |
5654 | add_defn_to_vec (obstackp, | |
76a01679 | 5655 | fixup_symbol_section (arg_sym, objfile), |
2570f2b7 | 5656 | block); |
96d887e8 PH |
5657 | } |
5658 | } | |
5659 | } | |
5660 | \f | |
41d27058 JB |
5661 | |
5662 | /* Symbol Completion */ | |
5663 | ||
5664 | /* If SYM_NAME is a completion candidate for TEXT, return this symbol | |
5665 | name in a form that's appropriate for the completion. The result | |
5666 | does not need to be deallocated, but is only good until the next call. | |
5667 | ||
5668 | TEXT_LEN is equal to the length of TEXT. | |
e701b3c0 | 5669 | Perform a wild match if WILD_MATCH_P is set. |
6ea35997 | 5670 | ENCODED_P should be set if TEXT represents the start of a symbol name |
41d27058 JB |
5671 | in its encoded form. */ |
5672 | ||
5673 | static const char * | |
5674 | symbol_completion_match (const char *sym_name, | |
5675 | const char *text, int text_len, | |
6ea35997 | 5676 | int wild_match_p, int encoded_p) |
41d27058 | 5677 | { |
41d27058 JB |
5678 | const int verbatim_match = (text[0] == '<'); |
5679 | int match = 0; | |
5680 | ||
5681 | if (verbatim_match) | |
5682 | { | |
5683 | /* Strip the leading angle bracket. */ | |
5684 | text = text + 1; | |
5685 | text_len--; | |
5686 | } | |
5687 | ||
5688 | /* First, test against the fully qualified name of the symbol. */ | |
5689 | ||
5690 | if (strncmp (sym_name, text, text_len) == 0) | |
5691 | match = 1; | |
5692 | ||
6ea35997 | 5693 | if (match && !encoded_p) |
41d27058 JB |
5694 | { |
5695 | /* One needed check before declaring a positive match is to verify | |
5696 | that iff we are doing a verbatim match, the decoded version | |
5697 | of the symbol name starts with '<'. Otherwise, this symbol name | |
5698 | is not a suitable completion. */ | |
5699 | const char *sym_name_copy = sym_name; | |
5700 | int has_angle_bracket; | |
5701 | ||
5702 | sym_name = ada_decode (sym_name); | |
5703 | has_angle_bracket = (sym_name[0] == '<'); | |
5704 | match = (has_angle_bracket == verbatim_match); | |
5705 | sym_name = sym_name_copy; | |
5706 | } | |
5707 | ||
5708 | if (match && !verbatim_match) | |
5709 | { | |
5710 | /* When doing non-verbatim match, another check that needs to | |
5711 | be done is to verify that the potentially matching symbol name | |
5712 | does not include capital letters, because the ada-mode would | |
5713 | not be able to understand these symbol names without the | |
5714 | angle bracket notation. */ | |
5715 | const char *tmp; | |
5716 | ||
5717 | for (tmp = sym_name; *tmp != '\0' && !isupper (*tmp); tmp++); | |
5718 | if (*tmp != '\0') | |
5719 | match = 0; | |
5720 | } | |
5721 | ||
5722 | /* Second: Try wild matching... */ | |
5723 | ||
e701b3c0 | 5724 | if (!match && wild_match_p) |
41d27058 JB |
5725 | { |
5726 | /* Since we are doing wild matching, this means that TEXT | |
5727 | may represent an unqualified symbol name. We therefore must | |
5728 | also compare TEXT against the unqualified name of the symbol. */ | |
5729 | sym_name = ada_unqualified_name (ada_decode (sym_name)); | |
5730 | ||
5731 | if (strncmp (sym_name, text, text_len) == 0) | |
5732 | match = 1; | |
5733 | } | |
5734 | ||
5735 | /* Finally: If we found a mach, prepare the result to return. */ | |
5736 | ||
5737 | if (!match) | |
5738 | return NULL; | |
5739 | ||
5740 | if (verbatim_match) | |
5741 | sym_name = add_angle_brackets (sym_name); | |
5742 | ||
6ea35997 | 5743 | if (!encoded_p) |
41d27058 JB |
5744 | sym_name = ada_decode (sym_name); |
5745 | ||
5746 | return sym_name; | |
5747 | } | |
5748 | ||
5749 | /* A companion function to ada_make_symbol_completion_list(). | |
5750 | Check if SYM_NAME represents a symbol which name would be suitable | |
5751 | to complete TEXT (TEXT_LEN is the length of TEXT), in which case | |
5752 | it is appended at the end of the given string vector SV. | |
5753 | ||
5754 | ORIG_TEXT is the string original string from the user command | |
5755 | that needs to be completed. WORD is the entire command on which | |
5756 | completion should be performed. These two parameters are used to | |
5757 | determine which part of the symbol name should be added to the | |
5758 | completion vector. | |
c0af1706 | 5759 | if WILD_MATCH_P is set, then wild matching is performed. |
cb8e9b97 | 5760 | ENCODED_P should be set if TEXT represents a symbol name in its |
41d27058 JB |
5761 | encoded formed (in which case the completion should also be |
5762 | encoded). */ | |
5763 | ||
5764 | static void | |
d6565258 | 5765 | symbol_completion_add (VEC(char_ptr) **sv, |
41d27058 JB |
5766 | const char *sym_name, |
5767 | const char *text, int text_len, | |
5768 | const char *orig_text, const char *word, | |
cb8e9b97 | 5769 | int wild_match_p, int encoded_p) |
41d27058 JB |
5770 | { |
5771 | const char *match = symbol_completion_match (sym_name, text, text_len, | |
cb8e9b97 | 5772 | wild_match_p, encoded_p); |
41d27058 JB |
5773 | char *completion; |
5774 | ||
5775 | if (match == NULL) | |
5776 | return; | |
5777 | ||
5778 | /* We found a match, so add the appropriate completion to the given | |
5779 | string vector. */ | |
5780 | ||
5781 | if (word == orig_text) | |
5782 | { | |
5783 | completion = xmalloc (strlen (match) + 5); | |
5784 | strcpy (completion, match); | |
5785 | } | |
5786 | else if (word > orig_text) | |
5787 | { | |
5788 | /* Return some portion of sym_name. */ | |
5789 | completion = xmalloc (strlen (match) + 5); | |
5790 | strcpy (completion, match + (word - orig_text)); | |
5791 | } | |
5792 | else | |
5793 | { | |
5794 | /* Return some of ORIG_TEXT plus sym_name. */ | |
5795 | completion = xmalloc (strlen (match) + (orig_text - word) + 5); | |
5796 | strncpy (completion, word, orig_text - word); | |
5797 | completion[orig_text - word] = '\0'; | |
5798 | strcat (completion, match); | |
5799 | } | |
5800 | ||
d6565258 | 5801 | VEC_safe_push (char_ptr, *sv, completion); |
41d27058 JB |
5802 | } |
5803 | ||
ccefe4c4 | 5804 | /* An object of this type is passed as the user_data argument to the |
7b08b9eb | 5805 | expand_partial_symbol_names method. */ |
ccefe4c4 TT |
5806 | struct add_partial_datum |
5807 | { | |
5808 | VEC(char_ptr) **completions; | |
5809 | char *text; | |
5810 | int text_len; | |
5811 | char *text0; | |
5812 | char *word; | |
5813 | int wild_match; | |
5814 | int encoded; | |
5815 | }; | |
5816 | ||
7b08b9eb JK |
5817 | /* A callback for expand_partial_symbol_names. */ |
5818 | static int | |
e078317b | 5819 | ada_expand_partial_symbol_name (const char *name, void *user_data) |
ccefe4c4 TT |
5820 | { |
5821 | struct add_partial_datum *data = user_data; | |
7b08b9eb JK |
5822 | |
5823 | return symbol_completion_match (name, data->text, data->text_len, | |
5824 | data->wild_match, data->encoded) != NULL; | |
ccefe4c4 TT |
5825 | } |
5826 | ||
49c4e619 TT |
5827 | /* Return a list of possible symbol names completing TEXT0. WORD is |
5828 | the entire command on which completion is made. */ | |
41d27058 | 5829 | |
49c4e619 | 5830 | static VEC (char_ptr) * |
2f68a895 | 5831 | ada_make_symbol_completion_list (char *text0, char *word, enum type_code code) |
41d27058 JB |
5832 | { |
5833 | char *text; | |
5834 | int text_len; | |
b1ed564a JB |
5835 | int wild_match_p; |
5836 | int encoded_p; | |
2ba95b9b | 5837 | VEC(char_ptr) *completions = VEC_alloc (char_ptr, 128); |
41d27058 JB |
5838 | struct symbol *sym; |
5839 | struct symtab *s; | |
41d27058 JB |
5840 | struct minimal_symbol *msymbol; |
5841 | struct objfile *objfile; | |
5842 | struct block *b, *surrounding_static_block = 0; | |
5843 | int i; | |
8157b174 | 5844 | struct block_iterator iter; |
41d27058 | 5845 | |
2f68a895 TT |
5846 | gdb_assert (code == TYPE_CODE_UNDEF); |
5847 | ||
41d27058 JB |
5848 | if (text0[0] == '<') |
5849 | { | |
5850 | text = xstrdup (text0); | |
5851 | make_cleanup (xfree, text); | |
5852 | text_len = strlen (text); | |
b1ed564a JB |
5853 | wild_match_p = 0; |
5854 | encoded_p = 1; | |
41d27058 JB |
5855 | } |
5856 | else | |
5857 | { | |
5858 | text = xstrdup (ada_encode (text0)); | |
5859 | make_cleanup (xfree, text); | |
5860 | text_len = strlen (text); | |
5861 | for (i = 0; i < text_len; i++) | |
5862 | text[i] = tolower (text[i]); | |
5863 | ||
b1ed564a | 5864 | encoded_p = (strstr (text0, "__") != NULL); |
41d27058 JB |
5865 | /* If the name contains a ".", then the user is entering a fully |
5866 | qualified entity name, and the match must not be done in wild | |
5867 | mode. Similarly, if the user wants to complete what looks like | |
5868 | an encoded name, the match must not be done in wild mode. */ | |
b1ed564a | 5869 | wild_match_p = (strchr (text0, '.') == NULL && !encoded_p); |
41d27058 JB |
5870 | } |
5871 | ||
5872 | /* First, look at the partial symtab symbols. */ | |
41d27058 | 5873 | { |
ccefe4c4 TT |
5874 | struct add_partial_datum data; |
5875 | ||
5876 | data.completions = &completions; | |
5877 | data.text = text; | |
5878 | data.text_len = text_len; | |
5879 | data.text0 = text0; | |
5880 | data.word = word; | |
b1ed564a JB |
5881 | data.wild_match = wild_match_p; |
5882 | data.encoded = encoded_p; | |
7b08b9eb | 5883 | expand_partial_symbol_names (ada_expand_partial_symbol_name, &data); |
41d27058 JB |
5884 | } |
5885 | ||
5886 | /* At this point scan through the misc symbol vectors and add each | |
5887 | symbol you find to the list. Eventually we want to ignore | |
5888 | anything that isn't a text symbol (everything else will be | |
5889 | handled by the psymtab code above). */ | |
5890 | ||
5891 | ALL_MSYMBOLS (objfile, msymbol) | |
5892 | { | |
5893 | QUIT; | |
d6565258 | 5894 | symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (msymbol), |
b1ed564a JB |
5895 | text, text_len, text0, word, wild_match_p, |
5896 | encoded_p); | |
41d27058 JB |
5897 | } |
5898 | ||
5899 | /* Search upwards from currently selected frame (so that we can | |
5900 | complete on local vars. */ | |
5901 | ||
5902 | for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b)) | |
5903 | { | |
5904 | if (!BLOCK_SUPERBLOCK (b)) | |
5905 | surrounding_static_block = b; /* For elmin of dups */ | |
5906 | ||
5907 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
5908 | { | |
d6565258 | 5909 | symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (sym), |
41d27058 | 5910 | text, text_len, text0, word, |
b1ed564a | 5911 | wild_match_p, encoded_p); |
41d27058 JB |
5912 | } |
5913 | } | |
5914 | ||
5915 | /* Go through the symtabs and check the externs and statics for | |
5916 | symbols which match. */ | |
5917 | ||
5918 | ALL_SYMTABS (objfile, s) | |
5919 | { | |
5920 | QUIT; | |
5921 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); | |
5922 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
5923 | { | |
d6565258 | 5924 | symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (sym), |
41d27058 | 5925 | text, text_len, text0, word, |
b1ed564a | 5926 | wild_match_p, encoded_p); |
41d27058 JB |
5927 | } |
5928 | } | |
5929 | ||
5930 | ALL_SYMTABS (objfile, s) | |
5931 | { | |
5932 | QUIT; | |
5933 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
5934 | /* Don't do this block twice. */ | |
5935 | if (b == surrounding_static_block) | |
5936 | continue; | |
5937 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
5938 | { | |
d6565258 | 5939 | symbol_completion_add (&completions, SYMBOL_LINKAGE_NAME (sym), |
41d27058 | 5940 | text, text_len, text0, word, |
b1ed564a | 5941 | wild_match_p, encoded_p); |
41d27058 JB |
5942 | } |
5943 | } | |
5944 | ||
49c4e619 | 5945 | return completions; |
41d27058 JB |
5946 | } |
5947 | ||
963a6417 | 5948 | /* Field Access */ |
96d887e8 | 5949 | |
73fb9985 JB |
5950 | /* Return non-zero if TYPE is a pointer to the GNAT dispatch table used |
5951 | for tagged types. */ | |
5952 | ||
5953 | static int | |
5954 | ada_is_dispatch_table_ptr_type (struct type *type) | |
5955 | { | |
0d5cff50 | 5956 | const char *name; |
73fb9985 JB |
5957 | |
5958 | if (TYPE_CODE (type) != TYPE_CODE_PTR) | |
5959 | return 0; | |
5960 | ||
5961 | name = TYPE_NAME (TYPE_TARGET_TYPE (type)); | |
5962 | if (name == NULL) | |
5963 | return 0; | |
5964 | ||
5965 | return (strcmp (name, "ada__tags__dispatch_table") == 0); | |
5966 | } | |
5967 | ||
ac4a2da4 JG |
5968 | /* Return non-zero if TYPE is an interface tag. */ |
5969 | ||
5970 | static int | |
5971 | ada_is_interface_tag (struct type *type) | |
5972 | { | |
5973 | const char *name = TYPE_NAME (type); | |
5974 | ||
5975 | if (name == NULL) | |
5976 | return 0; | |
5977 | ||
5978 | return (strcmp (name, "ada__tags__interface_tag") == 0); | |
5979 | } | |
5980 | ||
963a6417 PH |
5981 | /* True if field number FIELD_NUM in struct or union type TYPE is supposed |
5982 | to be invisible to users. */ | |
96d887e8 | 5983 | |
963a6417 PH |
5984 | int |
5985 | ada_is_ignored_field (struct type *type, int field_num) | |
96d887e8 | 5986 | { |
963a6417 PH |
5987 | if (field_num < 0 || field_num > TYPE_NFIELDS (type)) |
5988 | return 1; | |
ffde82bf | 5989 | |
73fb9985 JB |
5990 | /* Check the name of that field. */ |
5991 | { | |
5992 | const char *name = TYPE_FIELD_NAME (type, field_num); | |
5993 | ||
5994 | /* Anonymous field names should not be printed. | |
5995 | brobecker/2007-02-20: I don't think this can actually happen | |
5996 | but we don't want to print the value of annonymous fields anyway. */ | |
5997 | if (name == NULL) | |
5998 | return 1; | |
5999 | ||
ffde82bf JB |
6000 | /* Normally, fields whose name start with an underscore ("_") |
6001 | are fields that have been internally generated by the compiler, | |
6002 | and thus should not be printed. The "_parent" field is special, | |
6003 | however: This is a field internally generated by the compiler | |
6004 | for tagged types, and it contains the components inherited from | |
6005 | the parent type. This field should not be printed as is, but | |
6006 | should not be ignored either. */ | |
73fb9985 JB |
6007 | if (name[0] == '_' && strncmp (name, "_parent", 7) != 0) |
6008 | return 1; | |
6009 | } | |
6010 | ||
ac4a2da4 JG |
6011 | /* If this is the dispatch table of a tagged type or an interface tag, |
6012 | then ignore. */ | |
73fb9985 | 6013 | if (ada_is_tagged_type (type, 1) |
ac4a2da4 JG |
6014 | && (ada_is_dispatch_table_ptr_type (TYPE_FIELD_TYPE (type, field_num)) |
6015 | || ada_is_interface_tag (TYPE_FIELD_TYPE (type, field_num)))) | |
73fb9985 JB |
6016 | return 1; |
6017 | ||
6018 | /* Not a special field, so it should not be ignored. */ | |
6019 | return 0; | |
963a6417 | 6020 | } |
96d887e8 | 6021 | |
963a6417 | 6022 | /* True iff TYPE has a tag field. If REFOK, then TYPE may also be a |
0963b4bd | 6023 | pointer or reference type whose ultimate target has a tag field. */ |
96d887e8 | 6024 | |
963a6417 PH |
6025 | int |
6026 | ada_is_tagged_type (struct type *type, int refok) | |
6027 | { | |
6028 | return (ada_lookup_struct_elt_type (type, "_tag", refok, 1, NULL) != NULL); | |
6029 | } | |
96d887e8 | 6030 | |
963a6417 | 6031 | /* True iff TYPE represents the type of X'Tag */ |
96d887e8 | 6032 | |
963a6417 PH |
6033 | int |
6034 | ada_is_tag_type (struct type *type) | |
6035 | { | |
6036 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_PTR) | |
6037 | return 0; | |
6038 | else | |
96d887e8 | 6039 | { |
963a6417 | 6040 | const char *name = ada_type_name (TYPE_TARGET_TYPE (type)); |
5b4ee69b | 6041 | |
963a6417 PH |
6042 | return (name != NULL |
6043 | && strcmp (name, "ada__tags__dispatch_table") == 0); | |
96d887e8 | 6044 | } |
96d887e8 PH |
6045 | } |
6046 | ||
963a6417 | 6047 | /* The type of the tag on VAL. */ |
76a01679 | 6048 | |
963a6417 PH |
6049 | struct type * |
6050 | ada_tag_type (struct value *val) | |
96d887e8 | 6051 | { |
df407dfe | 6052 | return ada_lookup_struct_elt_type (value_type (val), "_tag", 1, 0, NULL); |
963a6417 | 6053 | } |
96d887e8 | 6054 | |
b50d69b5 JG |
6055 | /* Return 1 if TAG follows the old scheme for Ada tags (used for Ada 95, |
6056 | retired at Ada 05). */ | |
6057 | ||
6058 | static int | |
6059 | is_ada95_tag (struct value *tag) | |
6060 | { | |
6061 | return ada_value_struct_elt (tag, "tsd", 1) != NULL; | |
6062 | } | |
6063 | ||
963a6417 | 6064 | /* The value of the tag on VAL. */ |
96d887e8 | 6065 | |
963a6417 PH |
6066 | struct value * |
6067 | ada_value_tag (struct value *val) | |
6068 | { | |
03ee6b2e | 6069 | return ada_value_struct_elt (val, "_tag", 0); |
96d887e8 PH |
6070 | } |
6071 | ||
963a6417 PH |
6072 | /* The value of the tag on the object of type TYPE whose contents are |
6073 | saved at VALADDR, if it is non-null, or is at memory address | |
0963b4bd | 6074 | ADDRESS. */ |
96d887e8 | 6075 | |
963a6417 | 6076 | static struct value * |
10a2c479 | 6077 | value_tag_from_contents_and_address (struct type *type, |
fc1a4b47 | 6078 | const gdb_byte *valaddr, |
963a6417 | 6079 | CORE_ADDR address) |
96d887e8 | 6080 | { |
b5385fc0 | 6081 | int tag_byte_offset; |
963a6417 | 6082 | struct type *tag_type; |
5b4ee69b | 6083 | |
963a6417 | 6084 | if (find_struct_field ("_tag", type, 0, &tag_type, &tag_byte_offset, |
52ce6436 | 6085 | NULL, NULL, NULL)) |
96d887e8 | 6086 | { |
fc1a4b47 | 6087 | const gdb_byte *valaddr1 = ((valaddr == NULL) |
10a2c479 AC |
6088 | ? NULL |
6089 | : valaddr + tag_byte_offset); | |
963a6417 | 6090 | CORE_ADDR address1 = (address == 0) ? 0 : address + tag_byte_offset; |
96d887e8 | 6091 | |
963a6417 | 6092 | return value_from_contents_and_address (tag_type, valaddr1, address1); |
96d887e8 | 6093 | } |
963a6417 PH |
6094 | return NULL; |
6095 | } | |
96d887e8 | 6096 | |
963a6417 PH |
6097 | static struct type * |
6098 | type_from_tag (struct value *tag) | |
6099 | { | |
6100 | const char *type_name = ada_tag_name (tag); | |
5b4ee69b | 6101 | |
963a6417 PH |
6102 | if (type_name != NULL) |
6103 | return ada_find_any_type (ada_encode (type_name)); | |
6104 | return NULL; | |
6105 | } | |
96d887e8 | 6106 | |
b50d69b5 JG |
6107 | /* Given a value OBJ of a tagged type, return a value of this |
6108 | type at the base address of the object. The base address, as | |
6109 | defined in Ada.Tags, it is the address of the primary tag of | |
6110 | the object, and therefore where the field values of its full | |
6111 | view can be fetched. */ | |
6112 | ||
6113 | struct value * | |
6114 | ada_tag_value_at_base_address (struct value *obj) | |
6115 | { | |
6116 | volatile struct gdb_exception e; | |
6117 | struct value *val; | |
6118 | LONGEST offset_to_top = 0; | |
6119 | struct type *ptr_type, *obj_type; | |
6120 | struct value *tag; | |
6121 | CORE_ADDR base_address; | |
6122 | ||
6123 | obj_type = value_type (obj); | |
6124 | ||
6125 | /* It is the responsability of the caller to deref pointers. */ | |
6126 | ||
6127 | if (TYPE_CODE (obj_type) == TYPE_CODE_PTR | |
6128 | || TYPE_CODE (obj_type) == TYPE_CODE_REF) | |
6129 | return obj; | |
6130 | ||
6131 | tag = ada_value_tag (obj); | |
6132 | if (!tag) | |
6133 | return obj; | |
6134 | ||
6135 | /* Base addresses only appeared with Ada 05 and multiple inheritance. */ | |
6136 | ||
6137 | if (is_ada95_tag (tag)) | |
6138 | return obj; | |
6139 | ||
6140 | ptr_type = builtin_type (target_gdbarch ())->builtin_data_ptr; | |
6141 | ptr_type = lookup_pointer_type (ptr_type); | |
6142 | val = value_cast (ptr_type, tag); | |
6143 | if (!val) | |
6144 | return obj; | |
6145 | ||
6146 | /* It is perfectly possible that an exception be raised while | |
6147 | trying to determine the base address, just like for the tag; | |
6148 | see ada_tag_name for more details. We do not print the error | |
6149 | message for the same reason. */ | |
6150 | ||
6151 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
6152 | { | |
6153 | offset_to_top = value_as_long (value_ind (value_ptradd (val, -2))); | |
6154 | } | |
6155 | ||
6156 | if (e.reason < 0) | |
6157 | return obj; | |
6158 | ||
6159 | /* If offset is null, nothing to do. */ | |
6160 | ||
6161 | if (offset_to_top == 0) | |
6162 | return obj; | |
6163 | ||
6164 | /* -1 is a special case in Ada.Tags; however, what should be done | |
6165 | is not quite clear from the documentation. So do nothing for | |
6166 | now. */ | |
6167 | ||
6168 | if (offset_to_top == -1) | |
6169 | return obj; | |
6170 | ||
6171 | base_address = value_address (obj) - offset_to_top; | |
6172 | tag = value_tag_from_contents_and_address (obj_type, NULL, base_address); | |
6173 | ||
6174 | /* Make sure that we have a proper tag at the new address. | |
6175 | Otherwise, offset_to_top is bogus (which can happen when | |
6176 | the object is not initialized yet). */ | |
6177 | ||
6178 | if (!tag) | |
6179 | return obj; | |
6180 | ||
6181 | obj_type = type_from_tag (tag); | |
6182 | ||
6183 | if (!obj_type) | |
6184 | return obj; | |
6185 | ||
6186 | return value_from_contents_and_address (obj_type, NULL, base_address); | |
6187 | } | |
6188 | ||
1b611343 JB |
6189 | /* Return the "ada__tags__type_specific_data" type. */ |
6190 | ||
6191 | static struct type * | |
6192 | ada_get_tsd_type (struct inferior *inf) | |
963a6417 | 6193 | { |
1b611343 | 6194 | struct ada_inferior_data *data = get_ada_inferior_data (inf); |
4c4b4cd2 | 6195 | |
1b611343 JB |
6196 | if (data->tsd_type == 0) |
6197 | data->tsd_type = ada_find_any_type ("ada__tags__type_specific_data"); | |
6198 | return data->tsd_type; | |
6199 | } | |
529cad9c | 6200 | |
1b611343 JB |
6201 | /* Return the TSD (type-specific data) associated to the given TAG. |
6202 | TAG is assumed to be the tag of a tagged-type entity. | |
529cad9c | 6203 | |
1b611343 | 6204 | May return NULL if we are unable to get the TSD. */ |
4c4b4cd2 | 6205 | |
1b611343 JB |
6206 | static struct value * |
6207 | ada_get_tsd_from_tag (struct value *tag) | |
4c4b4cd2 | 6208 | { |
4c4b4cd2 | 6209 | struct value *val; |
1b611343 | 6210 | struct type *type; |
5b4ee69b | 6211 | |
1b611343 JB |
6212 | /* First option: The TSD is simply stored as a field of our TAG. |
6213 | Only older versions of GNAT would use this format, but we have | |
6214 | to test it first, because there are no visible markers for | |
6215 | the current approach except the absence of that field. */ | |
529cad9c | 6216 | |
1b611343 JB |
6217 | val = ada_value_struct_elt (tag, "tsd", 1); |
6218 | if (val) | |
6219 | return val; | |
e802dbe0 | 6220 | |
1b611343 JB |
6221 | /* Try the second representation for the dispatch table (in which |
6222 | there is no explicit 'tsd' field in the referent of the tag pointer, | |
6223 | and instead the tsd pointer is stored just before the dispatch | |
6224 | table. */ | |
e802dbe0 | 6225 | |
1b611343 JB |
6226 | type = ada_get_tsd_type (current_inferior()); |
6227 | if (type == NULL) | |
6228 | return NULL; | |
6229 | type = lookup_pointer_type (lookup_pointer_type (type)); | |
6230 | val = value_cast (type, tag); | |
6231 | if (val == NULL) | |
6232 | return NULL; | |
6233 | return value_ind (value_ptradd (val, -1)); | |
e802dbe0 JB |
6234 | } |
6235 | ||
1b611343 JB |
6236 | /* Given the TSD of a tag (type-specific data), return a string |
6237 | containing the name of the associated type. | |
6238 | ||
6239 | The returned value is good until the next call. May return NULL | |
6240 | if we are unable to determine the tag name. */ | |
6241 | ||
6242 | static char * | |
6243 | ada_tag_name_from_tsd (struct value *tsd) | |
529cad9c | 6244 | { |
529cad9c PH |
6245 | static char name[1024]; |
6246 | char *p; | |
1b611343 | 6247 | struct value *val; |
529cad9c | 6248 | |
1b611343 | 6249 | val = ada_value_struct_elt (tsd, "expanded_name", 1); |
4c4b4cd2 | 6250 | if (val == NULL) |
1b611343 | 6251 | return NULL; |
4c4b4cd2 PH |
6252 | read_memory_string (value_as_address (val), name, sizeof (name) - 1); |
6253 | for (p = name; *p != '\0'; p += 1) | |
6254 | if (isalpha (*p)) | |
6255 | *p = tolower (*p); | |
1b611343 | 6256 | return name; |
4c4b4cd2 PH |
6257 | } |
6258 | ||
6259 | /* The type name of the dynamic type denoted by the 'tag value TAG, as | |
1b611343 JB |
6260 | a C string. |
6261 | ||
6262 | Return NULL if the TAG is not an Ada tag, or if we were unable to | |
6263 | determine the name of that tag. The result is good until the next | |
6264 | call. */ | |
4c4b4cd2 PH |
6265 | |
6266 | const char * | |
6267 | ada_tag_name (struct value *tag) | |
6268 | { | |
1b611343 JB |
6269 | volatile struct gdb_exception e; |
6270 | char *name = NULL; | |
5b4ee69b | 6271 | |
df407dfe | 6272 | if (!ada_is_tag_type (value_type (tag))) |
4c4b4cd2 | 6273 | return NULL; |
1b611343 JB |
6274 | |
6275 | /* It is perfectly possible that an exception be raised while trying | |
6276 | to determine the TAG's name, even under normal circumstances: | |
6277 | The associated variable may be uninitialized or corrupted, for | |
6278 | instance. We do not let any exception propagate past this point. | |
6279 | instead we return NULL. | |
6280 | ||
6281 | We also do not print the error message either (which often is very | |
6282 | low-level (Eg: "Cannot read memory at 0x[...]"), but instead let | |
6283 | the caller print a more meaningful message if necessary. */ | |
6284 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
6285 | { | |
6286 | struct value *tsd = ada_get_tsd_from_tag (tag); | |
6287 | ||
6288 | if (tsd != NULL) | |
6289 | name = ada_tag_name_from_tsd (tsd); | |
6290 | } | |
6291 | ||
6292 | return name; | |
4c4b4cd2 PH |
6293 | } |
6294 | ||
6295 | /* The parent type of TYPE, or NULL if none. */ | |
14f9c5c9 | 6296 | |
d2e4a39e | 6297 | struct type * |
ebf56fd3 | 6298 | ada_parent_type (struct type *type) |
14f9c5c9 AS |
6299 | { |
6300 | int i; | |
6301 | ||
61ee279c | 6302 | type = ada_check_typedef (type); |
14f9c5c9 AS |
6303 | |
6304 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT) | |
6305 | return NULL; | |
6306 | ||
6307 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
6308 | if (ada_is_parent_field (type, i)) | |
0c1f74cf JB |
6309 | { |
6310 | struct type *parent_type = TYPE_FIELD_TYPE (type, i); | |
6311 | ||
6312 | /* If the _parent field is a pointer, then dereference it. */ | |
6313 | if (TYPE_CODE (parent_type) == TYPE_CODE_PTR) | |
6314 | parent_type = TYPE_TARGET_TYPE (parent_type); | |
6315 | /* If there is a parallel XVS type, get the actual base type. */ | |
6316 | parent_type = ada_get_base_type (parent_type); | |
6317 | ||
6318 | return ada_check_typedef (parent_type); | |
6319 | } | |
14f9c5c9 AS |
6320 | |
6321 | return NULL; | |
6322 | } | |
6323 | ||
4c4b4cd2 PH |
6324 | /* True iff field number FIELD_NUM of structure type TYPE contains the |
6325 | parent-type (inherited) fields of a derived type. Assumes TYPE is | |
6326 | a structure type with at least FIELD_NUM+1 fields. */ | |
14f9c5c9 AS |
6327 | |
6328 | int | |
ebf56fd3 | 6329 | ada_is_parent_field (struct type *type, int field_num) |
14f9c5c9 | 6330 | { |
61ee279c | 6331 | const char *name = TYPE_FIELD_NAME (ada_check_typedef (type), field_num); |
5b4ee69b | 6332 | |
4c4b4cd2 PH |
6333 | return (name != NULL |
6334 | && (strncmp (name, "PARENT", 6) == 0 | |
6335 | || strncmp (name, "_parent", 7) == 0)); | |
14f9c5c9 AS |
6336 | } |
6337 | ||
4c4b4cd2 | 6338 | /* True iff field number FIELD_NUM of structure type TYPE is a |
14f9c5c9 | 6339 | transparent wrapper field (which should be silently traversed when doing |
4c4b4cd2 | 6340 | field selection and flattened when printing). Assumes TYPE is a |
14f9c5c9 | 6341 | structure type with at least FIELD_NUM+1 fields. Such fields are always |
4c4b4cd2 | 6342 | structures. */ |
14f9c5c9 AS |
6343 | |
6344 | int | |
ebf56fd3 | 6345 | ada_is_wrapper_field (struct type *type, int field_num) |
14f9c5c9 | 6346 | { |
d2e4a39e | 6347 | const char *name = TYPE_FIELD_NAME (type, field_num); |
5b4ee69b | 6348 | |
d2e4a39e | 6349 | return (name != NULL |
4c4b4cd2 PH |
6350 | && (strncmp (name, "PARENT", 6) == 0 |
6351 | || strcmp (name, "REP") == 0 | |
6352 | || strncmp (name, "_parent", 7) == 0 | |
6353 | || name[0] == 'S' || name[0] == 'R' || name[0] == 'O')); | |
14f9c5c9 AS |
6354 | } |
6355 | ||
4c4b4cd2 PH |
6356 | /* True iff field number FIELD_NUM of structure or union type TYPE |
6357 | is a variant wrapper. Assumes TYPE is a structure type with at least | |
6358 | FIELD_NUM+1 fields. */ | |
14f9c5c9 AS |
6359 | |
6360 | int | |
ebf56fd3 | 6361 | ada_is_variant_part (struct type *type, int field_num) |
14f9c5c9 | 6362 | { |
d2e4a39e | 6363 | struct type *field_type = TYPE_FIELD_TYPE (type, field_num); |
5b4ee69b | 6364 | |
14f9c5c9 | 6365 | return (TYPE_CODE (field_type) == TYPE_CODE_UNION |
4c4b4cd2 | 6366 | || (is_dynamic_field (type, field_num) |
c3e5cd34 PH |
6367 | && (TYPE_CODE (TYPE_TARGET_TYPE (field_type)) |
6368 | == TYPE_CODE_UNION))); | |
14f9c5c9 AS |
6369 | } |
6370 | ||
6371 | /* Assuming that VAR_TYPE is a variant wrapper (type of the variant part) | |
4c4b4cd2 | 6372 | whose discriminants are contained in the record type OUTER_TYPE, |
7c964f07 UW |
6373 | returns the type of the controlling discriminant for the variant. |
6374 | May return NULL if the type could not be found. */ | |
14f9c5c9 | 6375 | |
d2e4a39e | 6376 | struct type * |
ebf56fd3 | 6377 | ada_variant_discrim_type (struct type *var_type, struct type *outer_type) |
14f9c5c9 | 6378 | { |
d2e4a39e | 6379 | char *name = ada_variant_discrim_name (var_type); |
5b4ee69b | 6380 | |
7c964f07 | 6381 | return ada_lookup_struct_elt_type (outer_type, name, 1, 1, NULL); |
14f9c5c9 AS |
6382 | } |
6383 | ||
4c4b4cd2 | 6384 | /* Assuming that TYPE is the type of a variant wrapper, and FIELD_NUM is a |
14f9c5c9 | 6385 | valid field number within it, returns 1 iff field FIELD_NUM of TYPE |
4c4b4cd2 | 6386 | represents a 'when others' clause; otherwise 0. */ |
14f9c5c9 AS |
6387 | |
6388 | int | |
ebf56fd3 | 6389 | ada_is_others_clause (struct type *type, int field_num) |
14f9c5c9 | 6390 | { |
d2e4a39e | 6391 | const char *name = TYPE_FIELD_NAME (type, field_num); |
5b4ee69b | 6392 | |
14f9c5c9 AS |
6393 | return (name != NULL && name[0] == 'O'); |
6394 | } | |
6395 | ||
6396 | /* Assuming that TYPE0 is the type of the variant part of a record, | |
4c4b4cd2 PH |
6397 | returns the name of the discriminant controlling the variant. |
6398 | The value is valid until the next call to ada_variant_discrim_name. */ | |
14f9c5c9 | 6399 | |
d2e4a39e | 6400 | char * |
ebf56fd3 | 6401 | ada_variant_discrim_name (struct type *type0) |
14f9c5c9 | 6402 | { |
d2e4a39e | 6403 | static char *result = NULL; |
14f9c5c9 | 6404 | static size_t result_len = 0; |
d2e4a39e AS |
6405 | struct type *type; |
6406 | const char *name; | |
6407 | const char *discrim_end; | |
6408 | const char *discrim_start; | |
14f9c5c9 AS |
6409 | |
6410 | if (TYPE_CODE (type0) == TYPE_CODE_PTR) | |
6411 | type = TYPE_TARGET_TYPE (type0); | |
6412 | else | |
6413 | type = type0; | |
6414 | ||
6415 | name = ada_type_name (type); | |
6416 | ||
6417 | if (name == NULL || name[0] == '\000') | |
6418 | return ""; | |
6419 | ||
6420 | for (discrim_end = name + strlen (name) - 6; discrim_end != name; | |
6421 | discrim_end -= 1) | |
6422 | { | |
4c4b4cd2 PH |
6423 | if (strncmp (discrim_end, "___XVN", 6) == 0) |
6424 | break; | |
14f9c5c9 AS |
6425 | } |
6426 | if (discrim_end == name) | |
6427 | return ""; | |
6428 | ||
d2e4a39e | 6429 | for (discrim_start = discrim_end; discrim_start != name + 3; |
14f9c5c9 AS |
6430 | discrim_start -= 1) |
6431 | { | |
d2e4a39e | 6432 | if (discrim_start == name + 1) |
4c4b4cd2 | 6433 | return ""; |
76a01679 | 6434 | if ((discrim_start > name + 3 |
4c4b4cd2 PH |
6435 | && strncmp (discrim_start - 3, "___", 3) == 0) |
6436 | || discrim_start[-1] == '.') | |
6437 | break; | |
14f9c5c9 AS |
6438 | } |
6439 | ||
6440 | GROW_VECT (result, result_len, discrim_end - discrim_start + 1); | |
6441 | strncpy (result, discrim_start, discrim_end - discrim_start); | |
d2e4a39e | 6442 | result[discrim_end - discrim_start] = '\0'; |
14f9c5c9 AS |
6443 | return result; |
6444 | } | |
6445 | ||
4c4b4cd2 PH |
6446 | /* Scan STR for a subtype-encoded number, beginning at position K. |
6447 | Put the position of the character just past the number scanned in | |
6448 | *NEW_K, if NEW_K!=NULL. Put the scanned number in *R, if R!=NULL. | |
6449 | Return 1 if there was a valid number at the given position, and 0 | |
6450 | otherwise. A "subtype-encoded" number consists of the absolute value | |
6451 | in decimal, followed by the letter 'm' to indicate a negative number. | |
6452 | Assumes 0m does not occur. */ | |
14f9c5c9 AS |
6453 | |
6454 | int | |
d2e4a39e | 6455 | ada_scan_number (const char str[], int k, LONGEST * R, int *new_k) |
14f9c5c9 AS |
6456 | { |
6457 | ULONGEST RU; | |
6458 | ||
d2e4a39e | 6459 | if (!isdigit (str[k])) |
14f9c5c9 AS |
6460 | return 0; |
6461 | ||
4c4b4cd2 | 6462 | /* Do it the hard way so as not to make any assumption about |
14f9c5c9 | 6463 | the relationship of unsigned long (%lu scan format code) and |
4c4b4cd2 | 6464 | LONGEST. */ |
14f9c5c9 AS |
6465 | RU = 0; |
6466 | while (isdigit (str[k])) | |
6467 | { | |
d2e4a39e | 6468 | RU = RU * 10 + (str[k] - '0'); |
14f9c5c9 AS |
6469 | k += 1; |
6470 | } | |
6471 | ||
d2e4a39e | 6472 | if (str[k] == 'm') |
14f9c5c9 AS |
6473 | { |
6474 | if (R != NULL) | |
4c4b4cd2 | 6475 | *R = (-(LONGEST) (RU - 1)) - 1; |
14f9c5c9 AS |
6476 | k += 1; |
6477 | } | |
6478 | else if (R != NULL) | |
6479 | *R = (LONGEST) RU; | |
6480 | ||
4c4b4cd2 | 6481 | /* NOTE on the above: Technically, C does not say what the results of |
14f9c5c9 AS |
6482 | - (LONGEST) RU or (LONGEST) -RU are for RU == largest positive |
6483 | number representable as a LONGEST (although either would probably work | |
6484 | in most implementations). When RU>0, the locution in the then branch | |
4c4b4cd2 | 6485 | above is always equivalent to the negative of RU. */ |
14f9c5c9 AS |
6486 | |
6487 | if (new_k != NULL) | |
6488 | *new_k = k; | |
6489 | return 1; | |
6490 | } | |
6491 | ||
4c4b4cd2 PH |
6492 | /* Assuming that TYPE is a variant part wrapper type (a VARIANTS field), |
6493 | and FIELD_NUM is a valid field number within it, returns 1 iff VAL is | |
6494 | in the range encoded by field FIELD_NUM of TYPE; otherwise 0. */ | |
14f9c5c9 | 6495 | |
d2e4a39e | 6496 | int |
ebf56fd3 | 6497 | ada_in_variant (LONGEST val, struct type *type, int field_num) |
14f9c5c9 | 6498 | { |
d2e4a39e | 6499 | const char *name = TYPE_FIELD_NAME (type, field_num); |
14f9c5c9 AS |
6500 | int p; |
6501 | ||
6502 | p = 0; | |
6503 | while (1) | |
6504 | { | |
d2e4a39e | 6505 | switch (name[p]) |
4c4b4cd2 PH |
6506 | { |
6507 | case '\0': | |
6508 | return 0; | |
6509 | case 'S': | |
6510 | { | |
6511 | LONGEST W; | |
5b4ee69b | 6512 | |
4c4b4cd2 PH |
6513 | if (!ada_scan_number (name, p + 1, &W, &p)) |
6514 | return 0; | |
6515 | if (val == W) | |
6516 | return 1; | |
6517 | break; | |
6518 | } | |
6519 | case 'R': | |
6520 | { | |
6521 | LONGEST L, U; | |
5b4ee69b | 6522 | |
4c4b4cd2 PH |
6523 | if (!ada_scan_number (name, p + 1, &L, &p) |
6524 | || name[p] != 'T' || !ada_scan_number (name, p + 1, &U, &p)) | |
6525 | return 0; | |
6526 | if (val >= L && val <= U) | |
6527 | return 1; | |
6528 | break; | |
6529 | } | |
6530 | case 'O': | |
6531 | return 1; | |
6532 | default: | |
6533 | return 0; | |
6534 | } | |
6535 | } | |
6536 | } | |
6537 | ||
0963b4bd | 6538 | /* FIXME: Lots of redundancy below. Try to consolidate. */ |
4c4b4cd2 PH |
6539 | |
6540 | /* Given a value ARG1 (offset by OFFSET bytes) of a struct or union type | |
6541 | ARG_TYPE, extract and return the value of one of its (non-static) | |
6542 | fields. FIELDNO says which field. Differs from value_primitive_field | |
6543 | only in that it can handle packed values of arbitrary type. */ | |
14f9c5c9 | 6544 | |
4c4b4cd2 | 6545 | static struct value * |
d2e4a39e | 6546 | ada_value_primitive_field (struct value *arg1, int offset, int fieldno, |
4c4b4cd2 | 6547 | struct type *arg_type) |
14f9c5c9 | 6548 | { |
14f9c5c9 AS |
6549 | struct type *type; |
6550 | ||
61ee279c | 6551 | arg_type = ada_check_typedef (arg_type); |
14f9c5c9 AS |
6552 | type = TYPE_FIELD_TYPE (arg_type, fieldno); |
6553 | ||
4c4b4cd2 | 6554 | /* Handle packed fields. */ |
14f9c5c9 AS |
6555 | |
6556 | if (TYPE_FIELD_BITSIZE (arg_type, fieldno) != 0) | |
6557 | { | |
6558 | int bit_pos = TYPE_FIELD_BITPOS (arg_type, fieldno); | |
6559 | int bit_size = TYPE_FIELD_BITSIZE (arg_type, fieldno); | |
d2e4a39e | 6560 | |
0fd88904 | 6561 | return ada_value_primitive_packed_val (arg1, value_contents (arg1), |
4c4b4cd2 PH |
6562 | offset + bit_pos / 8, |
6563 | bit_pos % 8, bit_size, type); | |
14f9c5c9 AS |
6564 | } |
6565 | else | |
6566 | return value_primitive_field (arg1, offset, fieldno, arg_type); | |
6567 | } | |
6568 | ||
52ce6436 PH |
6569 | /* Find field with name NAME in object of type TYPE. If found, |
6570 | set the following for each argument that is non-null: | |
6571 | - *FIELD_TYPE_P to the field's type; | |
6572 | - *BYTE_OFFSET_P to OFFSET + the byte offset of the field within | |
6573 | an object of that type; | |
6574 | - *BIT_OFFSET_P to the bit offset modulo byte size of the field; | |
6575 | - *BIT_SIZE_P to its size in bits if the field is packed, and | |
6576 | 0 otherwise; | |
6577 | If INDEX_P is non-null, increment *INDEX_P by the number of source-visible | |
6578 | fields up to but not including the desired field, or by the total | |
6579 | number of fields if not found. A NULL value of NAME never | |
6580 | matches; the function just counts visible fields in this case. | |
6581 | ||
0963b4bd | 6582 | Returns 1 if found, 0 otherwise. */ |
52ce6436 | 6583 | |
4c4b4cd2 | 6584 | static int |
0d5cff50 | 6585 | find_struct_field (const char *name, struct type *type, int offset, |
76a01679 | 6586 | struct type **field_type_p, |
52ce6436 PH |
6587 | int *byte_offset_p, int *bit_offset_p, int *bit_size_p, |
6588 | int *index_p) | |
4c4b4cd2 PH |
6589 | { |
6590 | int i; | |
6591 | ||
61ee279c | 6592 | type = ada_check_typedef (type); |
76a01679 | 6593 | |
52ce6436 PH |
6594 | if (field_type_p != NULL) |
6595 | *field_type_p = NULL; | |
6596 | if (byte_offset_p != NULL) | |
d5d6fca5 | 6597 | *byte_offset_p = 0; |
52ce6436 PH |
6598 | if (bit_offset_p != NULL) |
6599 | *bit_offset_p = 0; | |
6600 | if (bit_size_p != NULL) | |
6601 | *bit_size_p = 0; | |
6602 | ||
6603 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
4c4b4cd2 PH |
6604 | { |
6605 | int bit_pos = TYPE_FIELD_BITPOS (type, i); | |
6606 | int fld_offset = offset + bit_pos / 8; | |
0d5cff50 | 6607 | const char *t_field_name = TYPE_FIELD_NAME (type, i); |
76a01679 | 6608 | |
4c4b4cd2 PH |
6609 | if (t_field_name == NULL) |
6610 | continue; | |
6611 | ||
52ce6436 | 6612 | else if (name != NULL && field_name_match (t_field_name, name)) |
76a01679 JB |
6613 | { |
6614 | int bit_size = TYPE_FIELD_BITSIZE (type, i); | |
5b4ee69b | 6615 | |
52ce6436 PH |
6616 | if (field_type_p != NULL) |
6617 | *field_type_p = TYPE_FIELD_TYPE (type, i); | |
6618 | if (byte_offset_p != NULL) | |
6619 | *byte_offset_p = fld_offset; | |
6620 | if (bit_offset_p != NULL) | |
6621 | *bit_offset_p = bit_pos % 8; | |
6622 | if (bit_size_p != NULL) | |
6623 | *bit_size_p = bit_size; | |
76a01679 JB |
6624 | return 1; |
6625 | } | |
4c4b4cd2 PH |
6626 | else if (ada_is_wrapper_field (type, i)) |
6627 | { | |
52ce6436 PH |
6628 | if (find_struct_field (name, TYPE_FIELD_TYPE (type, i), fld_offset, |
6629 | field_type_p, byte_offset_p, bit_offset_p, | |
6630 | bit_size_p, index_p)) | |
76a01679 JB |
6631 | return 1; |
6632 | } | |
4c4b4cd2 PH |
6633 | else if (ada_is_variant_part (type, i)) |
6634 | { | |
52ce6436 PH |
6635 | /* PNH: Wait. Do we ever execute this section, or is ARG always of |
6636 | fixed type?? */ | |
4c4b4cd2 | 6637 | int j; |
52ce6436 PH |
6638 | struct type *field_type |
6639 | = ada_check_typedef (TYPE_FIELD_TYPE (type, i)); | |
4c4b4cd2 | 6640 | |
52ce6436 | 6641 | for (j = 0; j < TYPE_NFIELDS (field_type); j += 1) |
4c4b4cd2 | 6642 | { |
76a01679 JB |
6643 | if (find_struct_field (name, TYPE_FIELD_TYPE (field_type, j), |
6644 | fld_offset | |
6645 | + TYPE_FIELD_BITPOS (field_type, j) / 8, | |
6646 | field_type_p, byte_offset_p, | |
52ce6436 | 6647 | bit_offset_p, bit_size_p, index_p)) |
76a01679 | 6648 | return 1; |
4c4b4cd2 PH |
6649 | } |
6650 | } | |
52ce6436 PH |
6651 | else if (index_p != NULL) |
6652 | *index_p += 1; | |
4c4b4cd2 PH |
6653 | } |
6654 | return 0; | |
6655 | } | |
6656 | ||
0963b4bd | 6657 | /* Number of user-visible fields in record type TYPE. */ |
4c4b4cd2 | 6658 | |
52ce6436 PH |
6659 | static int |
6660 | num_visible_fields (struct type *type) | |
6661 | { | |
6662 | int n; | |
5b4ee69b | 6663 | |
52ce6436 PH |
6664 | n = 0; |
6665 | find_struct_field (NULL, type, 0, NULL, NULL, NULL, NULL, &n); | |
6666 | return n; | |
6667 | } | |
14f9c5c9 | 6668 | |
4c4b4cd2 | 6669 | /* Look for a field NAME in ARG. Adjust the address of ARG by OFFSET bytes, |
14f9c5c9 AS |
6670 | and search in it assuming it has (class) type TYPE. |
6671 | If found, return value, else return NULL. | |
6672 | ||
4c4b4cd2 | 6673 | Searches recursively through wrapper fields (e.g., '_parent'). */ |
14f9c5c9 | 6674 | |
4c4b4cd2 | 6675 | static struct value * |
d2e4a39e | 6676 | ada_search_struct_field (char *name, struct value *arg, int offset, |
4c4b4cd2 | 6677 | struct type *type) |
14f9c5c9 AS |
6678 | { |
6679 | int i; | |
14f9c5c9 | 6680 | |
5b4ee69b | 6681 | type = ada_check_typedef (type); |
52ce6436 | 6682 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) |
14f9c5c9 | 6683 | { |
0d5cff50 | 6684 | const char *t_field_name = TYPE_FIELD_NAME (type, i); |
14f9c5c9 AS |
6685 | |
6686 | if (t_field_name == NULL) | |
4c4b4cd2 | 6687 | continue; |
14f9c5c9 AS |
6688 | |
6689 | else if (field_name_match (t_field_name, name)) | |
4c4b4cd2 | 6690 | return ada_value_primitive_field (arg, offset, i, type); |
14f9c5c9 AS |
6691 | |
6692 | else if (ada_is_wrapper_field (type, i)) | |
4c4b4cd2 | 6693 | { |
0963b4bd | 6694 | struct value *v = /* Do not let indent join lines here. */ |
06d5cf63 JB |
6695 | ada_search_struct_field (name, arg, |
6696 | offset + TYPE_FIELD_BITPOS (type, i) / 8, | |
6697 | TYPE_FIELD_TYPE (type, i)); | |
5b4ee69b | 6698 | |
4c4b4cd2 PH |
6699 | if (v != NULL) |
6700 | return v; | |
6701 | } | |
14f9c5c9 AS |
6702 | |
6703 | else if (ada_is_variant_part (type, i)) | |
4c4b4cd2 | 6704 | { |
0963b4bd | 6705 | /* PNH: Do we ever get here? See find_struct_field. */ |
4c4b4cd2 | 6706 | int j; |
5b4ee69b MS |
6707 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type, |
6708 | i)); | |
4c4b4cd2 PH |
6709 | int var_offset = offset + TYPE_FIELD_BITPOS (type, i) / 8; |
6710 | ||
52ce6436 | 6711 | for (j = 0; j < TYPE_NFIELDS (field_type); j += 1) |
4c4b4cd2 | 6712 | { |
0963b4bd MS |
6713 | struct value *v = ada_search_struct_field /* Force line |
6714 | break. */ | |
06d5cf63 JB |
6715 | (name, arg, |
6716 | var_offset + TYPE_FIELD_BITPOS (field_type, j) / 8, | |
6717 | TYPE_FIELD_TYPE (field_type, j)); | |
5b4ee69b | 6718 | |
4c4b4cd2 PH |
6719 | if (v != NULL) |
6720 | return v; | |
6721 | } | |
6722 | } | |
14f9c5c9 AS |
6723 | } |
6724 | return NULL; | |
6725 | } | |
d2e4a39e | 6726 | |
52ce6436 PH |
6727 | static struct value *ada_index_struct_field_1 (int *, struct value *, |
6728 | int, struct type *); | |
6729 | ||
6730 | ||
6731 | /* Return field #INDEX in ARG, where the index is that returned by | |
6732 | * find_struct_field through its INDEX_P argument. Adjust the address | |
6733 | * of ARG by OFFSET bytes, and search in it assuming it has (class) type TYPE. | |
0963b4bd | 6734 | * If found, return value, else return NULL. */ |
52ce6436 PH |
6735 | |
6736 | static struct value * | |
6737 | ada_index_struct_field (int index, struct value *arg, int offset, | |
6738 | struct type *type) | |
6739 | { | |
6740 | return ada_index_struct_field_1 (&index, arg, offset, type); | |
6741 | } | |
6742 | ||
6743 | ||
6744 | /* Auxiliary function for ada_index_struct_field. Like | |
6745 | * ada_index_struct_field, but takes index from *INDEX_P and modifies | |
0963b4bd | 6746 | * *INDEX_P. */ |
52ce6436 PH |
6747 | |
6748 | static struct value * | |
6749 | ada_index_struct_field_1 (int *index_p, struct value *arg, int offset, | |
6750 | struct type *type) | |
6751 | { | |
6752 | int i; | |
6753 | type = ada_check_typedef (type); | |
6754 | ||
6755 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
6756 | { | |
6757 | if (TYPE_FIELD_NAME (type, i) == NULL) | |
6758 | continue; | |
6759 | else if (ada_is_wrapper_field (type, i)) | |
6760 | { | |
0963b4bd | 6761 | struct value *v = /* Do not let indent join lines here. */ |
52ce6436 PH |
6762 | ada_index_struct_field_1 (index_p, arg, |
6763 | offset + TYPE_FIELD_BITPOS (type, i) / 8, | |
6764 | TYPE_FIELD_TYPE (type, i)); | |
5b4ee69b | 6765 | |
52ce6436 PH |
6766 | if (v != NULL) |
6767 | return v; | |
6768 | } | |
6769 | ||
6770 | else if (ada_is_variant_part (type, i)) | |
6771 | { | |
6772 | /* PNH: Do we ever get here? See ada_search_struct_field, | |
0963b4bd | 6773 | find_struct_field. */ |
52ce6436 PH |
6774 | error (_("Cannot assign this kind of variant record")); |
6775 | } | |
6776 | else if (*index_p == 0) | |
6777 | return ada_value_primitive_field (arg, offset, i, type); | |
6778 | else | |
6779 | *index_p -= 1; | |
6780 | } | |
6781 | return NULL; | |
6782 | } | |
6783 | ||
4c4b4cd2 PH |
6784 | /* Given ARG, a value of type (pointer or reference to a)* |
6785 | structure/union, extract the component named NAME from the ultimate | |
6786 | target structure/union and return it as a value with its | |
f5938064 | 6787 | appropriate type. |
14f9c5c9 | 6788 | |
4c4b4cd2 PH |
6789 | The routine searches for NAME among all members of the structure itself |
6790 | and (recursively) among all members of any wrapper members | |
14f9c5c9 AS |
6791 | (e.g., '_parent'). |
6792 | ||
03ee6b2e PH |
6793 | If NO_ERR, then simply return NULL in case of error, rather than |
6794 | calling error. */ | |
14f9c5c9 | 6795 | |
d2e4a39e | 6796 | struct value * |
03ee6b2e | 6797 | ada_value_struct_elt (struct value *arg, char *name, int no_err) |
14f9c5c9 | 6798 | { |
4c4b4cd2 | 6799 | struct type *t, *t1; |
d2e4a39e | 6800 | struct value *v; |
14f9c5c9 | 6801 | |
4c4b4cd2 | 6802 | v = NULL; |
df407dfe | 6803 | t1 = t = ada_check_typedef (value_type (arg)); |
4c4b4cd2 PH |
6804 | if (TYPE_CODE (t) == TYPE_CODE_REF) |
6805 | { | |
6806 | t1 = TYPE_TARGET_TYPE (t); | |
6807 | if (t1 == NULL) | |
03ee6b2e | 6808 | goto BadValue; |
61ee279c | 6809 | t1 = ada_check_typedef (t1); |
4c4b4cd2 | 6810 | if (TYPE_CODE (t1) == TYPE_CODE_PTR) |
76a01679 | 6811 | { |
994b9211 | 6812 | arg = coerce_ref (arg); |
76a01679 JB |
6813 | t = t1; |
6814 | } | |
4c4b4cd2 | 6815 | } |
14f9c5c9 | 6816 | |
4c4b4cd2 PH |
6817 | while (TYPE_CODE (t) == TYPE_CODE_PTR) |
6818 | { | |
6819 | t1 = TYPE_TARGET_TYPE (t); | |
6820 | if (t1 == NULL) | |
03ee6b2e | 6821 | goto BadValue; |
61ee279c | 6822 | t1 = ada_check_typedef (t1); |
4c4b4cd2 | 6823 | if (TYPE_CODE (t1) == TYPE_CODE_PTR) |
76a01679 JB |
6824 | { |
6825 | arg = value_ind (arg); | |
6826 | t = t1; | |
6827 | } | |
4c4b4cd2 | 6828 | else |
76a01679 | 6829 | break; |
4c4b4cd2 | 6830 | } |
14f9c5c9 | 6831 | |
4c4b4cd2 | 6832 | if (TYPE_CODE (t1) != TYPE_CODE_STRUCT && TYPE_CODE (t1) != TYPE_CODE_UNION) |
03ee6b2e | 6833 | goto BadValue; |
14f9c5c9 | 6834 | |
4c4b4cd2 PH |
6835 | if (t1 == t) |
6836 | v = ada_search_struct_field (name, arg, 0, t); | |
6837 | else | |
6838 | { | |
6839 | int bit_offset, bit_size, byte_offset; | |
6840 | struct type *field_type; | |
6841 | CORE_ADDR address; | |
6842 | ||
76a01679 | 6843 | if (TYPE_CODE (t) == TYPE_CODE_PTR) |
b50d69b5 | 6844 | address = value_address (ada_value_ind (arg)); |
4c4b4cd2 | 6845 | else |
b50d69b5 | 6846 | address = value_address (ada_coerce_ref (arg)); |
14f9c5c9 | 6847 | |
1ed6ede0 | 6848 | t1 = ada_to_fixed_type (ada_get_base_type (t1), NULL, address, NULL, 1); |
76a01679 JB |
6849 | if (find_struct_field (name, t1, 0, |
6850 | &field_type, &byte_offset, &bit_offset, | |
52ce6436 | 6851 | &bit_size, NULL)) |
76a01679 JB |
6852 | { |
6853 | if (bit_size != 0) | |
6854 | { | |
714e53ab PH |
6855 | if (TYPE_CODE (t) == TYPE_CODE_REF) |
6856 | arg = ada_coerce_ref (arg); | |
6857 | else | |
6858 | arg = ada_value_ind (arg); | |
76a01679 JB |
6859 | v = ada_value_primitive_packed_val (arg, NULL, byte_offset, |
6860 | bit_offset, bit_size, | |
6861 | field_type); | |
6862 | } | |
6863 | else | |
f5938064 | 6864 | v = value_at_lazy (field_type, address + byte_offset); |
76a01679 JB |
6865 | } |
6866 | } | |
6867 | ||
03ee6b2e PH |
6868 | if (v != NULL || no_err) |
6869 | return v; | |
6870 | else | |
323e0a4a | 6871 | error (_("There is no member named %s."), name); |
14f9c5c9 | 6872 | |
03ee6b2e PH |
6873 | BadValue: |
6874 | if (no_err) | |
6875 | return NULL; | |
6876 | else | |
0963b4bd MS |
6877 | error (_("Attempt to extract a component of " |
6878 | "a value that is not a record.")); | |
14f9c5c9 AS |
6879 | } |
6880 | ||
6881 | /* Given a type TYPE, look up the type of the component of type named NAME. | |
4c4b4cd2 PH |
6882 | If DISPP is non-null, add its byte displacement from the beginning of a |
6883 | structure (pointed to by a value) of type TYPE to *DISPP (does not | |
14f9c5c9 AS |
6884 | work for packed fields). |
6885 | ||
6886 | Matches any field whose name has NAME as a prefix, possibly | |
4c4b4cd2 | 6887 | followed by "___". |
14f9c5c9 | 6888 | |
0963b4bd | 6889 | TYPE can be either a struct or union. If REFOK, TYPE may also |
4c4b4cd2 PH |
6890 | be a (pointer or reference)+ to a struct or union, and the |
6891 | ultimate target type will be searched. | |
14f9c5c9 AS |
6892 | |
6893 | Looks recursively into variant clauses and parent types. | |
6894 | ||
4c4b4cd2 PH |
6895 | If NOERR is nonzero, return NULL if NAME is not suitably defined or |
6896 | TYPE is not a type of the right kind. */ | |
14f9c5c9 | 6897 | |
4c4b4cd2 | 6898 | static struct type * |
76a01679 JB |
6899 | ada_lookup_struct_elt_type (struct type *type, char *name, int refok, |
6900 | int noerr, int *dispp) | |
14f9c5c9 AS |
6901 | { |
6902 | int i; | |
6903 | ||
6904 | if (name == NULL) | |
6905 | goto BadName; | |
6906 | ||
76a01679 | 6907 | if (refok && type != NULL) |
4c4b4cd2 PH |
6908 | while (1) |
6909 | { | |
61ee279c | 6910 | type = ada_check_typedef (type); |
76a01679 JB |
6911 | if (TYPE_CODE (type) != TYPE_CODE_PTR |
6912 | && TYPE_CODE (type) != TYPE_CODE_REF) | |
6913 | break; | |
6914 | type = TYPE_TARGET_TYPE (type); | |
4c4b4cd2 | 6915 | } |
14f9c5c9 | 6916 | |
76a01679 | 6917 | if (type == NULL |
1265e4aa JB |
6918 | || (TYPE_CODE (type) != TYPE_CODE_STRUCT |
6919 | && TYPE_CODE (type) != TYPE_CODE_UNION)) | |
14f9c5c9 | 6920 | { |
4c4b4cd2 | 6921 | if (noerr) |
76a01679 | 6922 | return NULL; |
4c4b4cd2 | 6923 | else |
76a01679 JB |
6924 | { |
6925 | target_terminal_ours (); | |
6926 | gdb_flush (gdb_stdout); | |
323e0a4a AC |
6927 | if (type == NULL) |
6928 | error (_("Type (null) is not a structure or union type")); | |
6929 | else | |
6930 | { | |
6931 | /* XXX: type_sprint */ | |
6932 | fprintf_unfiltered (gdb_stderr, _("Type ")); | |
6933 | type_print (type, "", gdb_stderr, -1); | |
6934 | error (_(" is not a structure or union type")); | |
6935 | } | |
76a01679 | 6936 | } |
14f9c5c9 AS |
6937 | } |
6938 | ||
6939 | type = to_static_fixed_type (type); | |
6940 | ||
6941 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
6942 | { | |
0d5cff50 | 6943 | const char *t_field_name = TYPE_FIELD_NAME (type, i); |
14f9c5c9 AS |
6944 | struct type *t; |
6945 | int disp; | |
d2e4a39e | 6946 | |
14f9c5c9 | 6947 | if (t_field_name == NULL) |
4c4b4cd2 | 6948 | continue; |
14f9c5c9 AS |
6949 | |
6950 | else if (field_name_match (t_field_name, name)) | |
4c4b4cd2 PH |
6951 | { |
6952 | if (dispp != NULL) | |
6953 | *dispp += TYPE_FIELD_BITPOS (type, i) / 8; | |
61ee279c | 6954 | return ada_check_typedef (TYPE_FIELD_TYPE (type, i)); |
4c4b4cd2 | 6955 | } |
14f9c5c9 AS |
6956 | |
6957 | else if (ada_is_wrapper_field (type, i)) | |
4c4b4cd2 PH |
6958 | { |
6959 | disp = 0; | |
6960 | t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, | |
6961 | 0, 1, &disp); | |
6962 | if (t != NULL) | |
6963 | { | |
6964 | if (dispp != NULL) | |
6965 | *dispp += disp + TYPE_FIELD_BITPOS (type, i) / 8; | |
6966 | return t; | |
6967 | } | |
6968 | } | |
14f9c5c9 AS |
6969 | |
6970 | else if (ada_is_variant_part (type, i)) | |
4c4b4cd2 PH |
6971 | { |
6972 | int j; | |
5b4ee69b MS |
6973 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type, |
6974 | i)); | |
4c4b4cd2 PH |
6975 | |
6976 | for (j = TYPE_NFIELDS (field_type) - 1; j >= 0; j -= 1) | |
6977 | { | |
b1f33ddd JB |
6978 | /* FIXME pnh 2008/01/26: We check for a field that is |
6979 | NOT wrapped in a struct, since the compiler sometimes | |
6980 | generates these for unchecked variant types. Revisit | |
0963b4bd | 6981 | if the compiler changes this practice. */ |
0d5cff50 | 6982 | const char *v_field_name = TYPE_FIELD_NAME (field_type, j); |
4c4b4cd2 | 6983 | disp = 0; |
b1f33ddd JB |
6984 | if (v_field_name != NULL |
6985 | && field_name_match (v_field_name, name)) | |
6986 | t = ada_check_typedef (TYPE_FIELD_TYPE (field_type, j)); | |
6987 | else | |
0963b4bd MS |
6988 | t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (field_type, |
6989 | j), | |
b1f33ddd JB |
6990 | name, 0, 1, &disp); |
6991 | ||
4c4b4cd2 PH |
6992 | if (t != NULL) |
6993 | { | |
6994 | if (dispp != NULL) | |
6995 | *dispp += disp + TYPE_FIELD_BITPOS (type, i) / 8; | |
6996 | return t; | |
6997 | } | |
6998 | } | |
6999 | } | |
14f9c5c9 AS |
7000 | |
7001 | } | |
7002 | ||
7003 | BadName: | |
d2e4a39e | 7004 | if (!noerr) |
14f9c5c9 AS |
7005 | { |
7006 | target_terminal_ours (); | |
7007 | gdb_flush (gdb_stdout); | |
323e0a4a AC |
7008 | if (name == NULL) |
7009 | { | |
7010 | /* XXX: type_sprint */ | |
7011 | fprintf_unfiltered (gdb_stderr, _("Type ")); | |
7012 | type_print (type, "", gdb_stderr, -1); | |
7013 | error (_(" has no component named <null>")); | |
7014 | } | |
7015 | else | |
7016 | { | |
7017 | /* XXX: type_sprint */ | |
7018 | fprintf_unfiltered (gdb_stderr, _("Type ")); | |
7019 | type_print (type, "", gdb_stderr, -1); | |
7020 | error (_(" has no component named %s"), name); | |
7021 | } | |
14f9c5c9 AS |
7022 | } |
7023 | ||
7024 | return NULL; | |
7025 | } | |
7026 | ||
b1f33ddd JB |
7027 | /* Assuming that VAR_TYPE is the type of a variant part of a record (a union), |
7028 | within a value of type OUTER_TYPE, return true iff VAR_TYPE | |
7029 | represents an unchecked union (that is, the variant part of a | |
0963b4bd | 7030 | record that is named in an Unchecked_Union pragma). */ |
b1f33ddd JB |
7031 | |
7032 | static int | |
7033 | is_unchecked_variant (struct type *var_type, struct type *outer_type) | |
7034 | { | |
7035 | char *discrim_name = ada_variant_discrim_name (var_type); | |
5b4ee69b | 7036 | |
b1f33ddd JB |
7037 | return (ada_lookup_struct_elt_type (outer_type, discrim_name, 0, 1, NULL) |
7038 | == NULL); | |
7039 | } | |
7040 | ||
7041 | ||
14f9c5c9 AS |
7042 | /* Assuming that VAR_TYPE is the type of a variant part of a record (a union), |
7043 | within a value of type OUTER_TYPE that is stored in GDB at | |
4c4b4cd2 PH |
7044 | OUTER_VALADDR, determine which variant clause (field number in VAR_TYPE, |
7045 | numbering from 0) is applicable. Returns -1 if none are. */ | |
14f9c5c9 | 7046 | |
d2e4a39e | 7047 | int |
ebf56fd3 | 7048 | ada_which_variant_applies (struct type *var_type, struct type *outer_type, |
fc1a4b47 | 7049 | const gdb_byte *outer_valaddr) |
14f9c5c9 AS |
7050 | { |
7051 | int others_clause; | |
7052 | int i; | |
d2e4a39e | 7053 | char *discrim_name = ada_variant_discrim_name (var_type); |
0c281816 JB |
7054 | struct value *outer; |
7055 | struct value *discrim; | |
14f9c5c9 AS |
7056 | LONGEST discrim_val; |
7057 | ||
0c281816 JB |
7058 | outer = value_from_contents_and_address (outer_type, outer_valaddr, 0); |
7059 | discrim = ada_value_struct_elt (outer, discrim_name, 1); | |
7060 | if (discrim == NULL) | |
14f9c5c9 | 7061 | return -1; |
0c281816 | 7062 | discrim_val = value_as_long (discrim); |
14f9c5c9 AS |
7063 | |
7064 | others_clause = -1; | |
7065 | for (i = 0; i < TYPE_NFIELDS (var_type); i += 1) | |
7066 | { | |
7067 | if (ada_is_others_clause (var_type, i)) | |
4c4b4cd2 | 7068 | others_clause = i; |
14f9c5c9 | 7069 | else if (ada_in_variant (discrim_val, var_type, i)) |
4c4b4cd2 | 7070 | return i; |
14f9c5c9 AS |
7071 | } |
7072 | ||
7073 | return others_clause; | |
7074 | } | |
d2e4a39e | 7075 | \f |
14f9c5c9 AS |
7076 | |
7077 | ||
4c4b4cd2 | 7078 | /* Dynamic-Sized Records */ |
14f9c5c9 AS |
7079 | |
7080 | /* Strategy: The type ostensibly attached to a value with dynamic size | |
7081 | (i.e., a size that is not statically recorded in the debugging | |
7082 | data) does not accurately reflect the size or layout of the value. | |
7083 | Our strategy is to convert these values to values with accurate, | |
4c4b4cd2 | 7084 | conventional types that are constructed on the fly. */ |
14f9c5c9 AS |
7085 | |
7086 | /* There is a subtle and tricky problem here. In general, we cannot | |
7087 | determine the size of dynamic records without its data. However, | |
7088 | the 'struct value' data structure, which GDB uses to represent | |
7089 | quantities in the inferior process (the target), requires the size | |
7090 | of the type at the time of its allocation in order to reserve space | |
7091 | for GDB's internal copy of the data. That's why the | |
7092 | 'to_fixed_xxx_type' routines take (target) addresses as parameters, | |
4c4b4cd2 | 7093 | rather than struct value*s. |
14f9c5c9 AS |
7094 | |
7095 | However, GDB's internal history variables ($1, $2, etc.) are | |
7096 | struct value*s containing internal copies of the data that are not, in | |
7097 | general, the same as the data at their corresponding addresses in | |
7098 | the target. Fortunately, the types we give to these values are all | |
7099 | conventional, fixed-size types (as per the strategy described | |
7100 | above), so that we don't usually have to perform the | |
7101 | 'to_fixed_xxx_type' conversions to look at their values. | |
7102 | Unfortunately, there is one exception: if one of the internal | |
7103 | history variables is an array whose elements are unconstrained | |
7104 | records, then we will need to create distinct fixed types for each | |
7105 | element selected. */ | |
7106 | ||
7107 | /* The upshot of all of this is that many routines take a (type, host | |
7108 | address, target address) triple as arguments to represent a value. | |
7109 | The host address, if non-null, is supposed to contain an internal | |
7110 | copy of the relevant data; otherwise, the program is to consult the | |
4c4b4cd2 | 7111 | target at the target address. */ |
14f9c5c9 AS |
7112 | |
7113 | /* Assuming that VAL0 represents a pointer value, the result of | |
7114 | dereferencing it. Differs from value_ind in its treatment of | |
4c4b4cd2 | 7115 | dynamic-sized types. */ |
14f9c5c9 | 7116 | |
d2e4a39e AS |
7117 | struct value * |
7118 | ada_value_ind (struct value *val0) | |
14f9c5c9 | 7119 | { |
c48db5ca | 7120 | struct value *val = value_ind (val0); |
5b4ee69b | 7121 | |
b50d69b5 JG |
7122 | if (ada_is_tagged_type (value_type (val), 0)) |
7123 | val = ada_tag_value_at_base_address (val); | |
7124 | ||
4c4b4cd2 | 7125 | return ada_to_fixed_value (val); |
14f9c5c9 AS |
7126 | } |
7127 | ||
7128 | /* The value resulting from dereferencing any "reference to" | |
4c4b4cd2 PH |
7129 | qualifiers on VAL0. */ |
7130 | ||
d2e4a39e AS |
7131 | static struct value * |
7132 | ada_coerce_ref (struct value *val0) | |
7133 | { | |
df407dfe | 7134 | if (TYPE_CODE (value_type (val0)) == TYPE_CODE_REF) |
d2e4a39e AS |
7135 | { |
7136 | struct value *val = val0; | |
5b4ee69b | 7137 | |
994b9211 | 7138 | val = coerce_ref (val); |
b50d69b5 JG |
7139 | |
7140 | if (ada_is_tagged_type (value_type (val), 0)) | |
7141 | val = ada_tag_value_at_base_address (val); | |
7142 | ||
4c4b4cd2 | 7143 | return ada_to_fixed_value (val); |
d2e4a39e AS |
7144 | } |
7145 | else | |
14f9c5c9 AS |
7146 | return val0; |
7147 | } | |
7148 | ||
7149 | /* Return OFF rounded upward if necessary to a multiple of | |
4c4b4cd2 | 7150 | ALIGNMENT (a power of 2). */ |
14f9c5c9 AS |
7151 | |
7152 | static unsigned int | |
ebf56fd3 | 7153 | align_value (unsigned int off, unsigned int alignment) |
14f9c5c9 AS |
7154 | { |
7155 | return (off + alignment - 1) & ~(alignment - 1); | |
7156 | } | |
7157 | ||
4c4b4cd2 | 7158 | /* Return the bit alignment required for field #F of template type TYPE. */ |
14f9c5c9 AS |
7159 | |
7160 | static unsigned int | |
ebf56fd3 | 7161 | field_alignment (struct type *type, int f) |
14f9c5c9 | 7162 | { |
d2e4a39e | 7163 | const char *name = TYPE_FIELD_NAME (type, f); |
64a1bf19 | 7164 | int len; |
14f9c5c9 AS |
7165 | int align_offset; |
7166 | ||
64a1bf19 JB |
7167 | /* The field name should never be null, unless the debugging information |
7168 | is somehow malformed. In this case, we assume the field does not | |
7169 | require any alignment. */ | |
7170 | if (name == NULL) | |
7171 | return 1; | |
7172 | ||
7173 | len = strlen (name); | |
7174 | ||
4c4b4cd2 PH |
7175 | if (!isdigit (name[len - 1])) |
7176 | return 1; | |
14f9c5c9 | 7177 | |
d2e4a39e | 7178 | if (isdigit (name[len - 2])) |
14f9c5c9 AS |
7179 | align_offset = len - 2; |
7180 | else | |
7181 | align_offset = len - 1; | |
7182 | ||
4c4b4cd2 | 7183 | if (align_offset < 7 || strncmp ("___XV", name + align_offset - 6, 5) != 0) |
14f9c5c9 AS |
7184 | return TARGET_CHAR_BIT; |
7185 | ||
4c4b4cd2 PH |
7186 | return atoi (name + align_offset) * TARGET_CHAR_BIT; |
7187 | } | |
7188 | ||
852dff6c | 7189 | /* Find a typedef or tag symbol named NAME. Ignores ambiguity. */ |
4c4b4cd2 | 7190 | |
852dff6c JB |
7191 | static struct symbol * |
7192 | ada_find_any_type_symbol (const char *name) | |
4c4b4cd2 PH |
7193 | { |
7194 | struct symbol *sym; | |
7195 | ||
7196 | sym = standard_lookup (name, get_selected_block (NULL), VAR_DOMAIN); | |
7197 | if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
7198 | return sym; | |
7199 | ||
7200 | sym = standard_lookup (name, NULL, STRUCT_DOMAIN); | |
7201 | return sym; | |
14f9c5c9 AS |
7202 | } |
7203 | ||
dddfab26 UW |
7204 | /* Find a type named NAME. Ignores ambiguity. This routine will look |
7205 | solely for types defined by debug info, it will not search the GDB | |
7206 | primitive types. */ | |
4c4b4cd2 | 7207 | |
852dff6c | 7208 | static struct type * |
ebf56fd3 | 7209 | ada_find_any_type (const char *name) |
14f9c5c9 | 7210 | { |
852dff6c | 7211 | struct symbol *sym = ada_find_any_type_symbol (name); |
14f9c5c9 | 7212 | |
14f9c5c9 | 7213 | if (sym != NULL) |
dddfab26 | 7214 | return SYMBOL_TYPE (sym); |
14f9c5c9 | 7215 | |
dddfab26 | 7216 | return NULL; |
14f9c5c9 AS |
7217 | } |
7218 | ||
739593e0 JB |
7219 | /* Given NAME_SYM and an associated BLOCK, find a "renaming" symbol |
7220 | associated with NAME_SYM's name. NAME_SYM may itself be a renaming | |
7221 | symbol, in which case it is returned. Otherwise, this looks for | |
7222 | symbols whose name is that of NAME_SYM suffixed with "___XR". | |
7223 | Return symbol if found, and NULL otherwise. */ | |
4c4b4cd2 PH |
7224 | |
7225 | struct symbol * | |
270140bd | 7226 | ada_find_renaming_symbol (struct symbol *name_sym, const struct block *block) |
aeb5907d | 7227 | { |
739593e0 | 7228 | const char *name = SYMBOL_LINKAGE_NAME (name_sym); |
aeb5907d JB |
7229 | struct symbol *sym; |
7230 | ||
739593e0 JB |
7231 | if (strstr (name, "___XR") != NULL) |
7232 | return name_sym; | |
7233 | ||
aeb5907d JB |
7234 | sym = find_old_style_renaming_symbol (name, block); |
7235 | ||
7236 | if (sym != NULL) | |
7237 | return sym; | |
7238 | ||
0963b4bd | 7239 | /* Not right yet. FIXME pnh 7/20/2007. */ |
852dff6c | 7240 | sym = ada_find_any_type_symbol (name); |
aeb5907d JB |
7241 | if (sym != NULL && strstr (SYMBOL_LINKAGE_NAME (sym), "___XR") != NULL) |
7242 | return sym; | |
7243 | else | |
7244 | return NULL; | |
7245 | } | |
7246 | ||
7247 | static struct symbol * | |
270140bd | 7248 | find_old_style_renaming_symbol (const char *name, const struct block *block) |
4c4b4cd2 | 7249 | { |
7f0df278 | 7250 | const struct symbol *function_sym = block_linkage_function (block); |
4c4b4cd2 PH |
7251 | char *rename; |
7252 | ||
7253 | if (function_sym != NULL) | |
7254 | { | |
7255 | /* If the symbol is defined inside a function, NAME is not fully | |
7256 | qualified. This means we need to prepend the function name | |
7257 | as well as adding the ``___XR'' suffix to build the name of | |
7258 | the associated renaming symbol. */ | |
0d5cff50 | 7259 | const char *function_name = SYMBOL_LINKAGE_NAME (function_sym); |
529cad9c PH |
7260 | /* Function names sometimes contain suffixes used |
7261 | for instance to qualify nested subprograms. When building | |
7262 | the XR type name, we need to make sure that this suffix is | |
7263 | not included. So do not include any suffix in the function | |
7264 | name length below. */ | |
69fadcdf | 7265 | int function_name_len = ada_name_prefix_len (function_name); |
76a01679 JB |
7266 | const int rename_len = function_name_len + 2 /* "__" */ |
7267 | + strlen (name) + 6 /* "___XR\0" */ ; | |
4c4b4cd2 | 7268 | |
529cad9c | 7269 | /* Strip the suffix if necessary. */ |
69fadcdf JB |
7270 | ada_remove_trailing_digits (function_name, &function_name_len); |
7271 | ada_remove_po_subprogram_suffix (function_name, &function_name_len); | |
7272 | ada_remove_Xbn_suffix (function_name, &function_name_len); | |
529cad9c | 7273 | |
4c4b4cd2 PH |
7274 | /* Library-level functions are a special case, as GNAT adds |
7275 | a ``_ada_'' prefix to the function name to avoid namespace | |
aeb5907d | 7276 | pollution. However, the renaming symbols themselves do not |
4c4b4cd2 PH |
7277 | have this prefix, so we need to skip this prefix if present. */ |
7278 | if (function_name_len > 5 /* "_ada_" */ | |
7279 | && strstr (function_name, "_ada_") == function_name) | |
69fadcdf JB |
7280 | { |
7281 | function_name += 5; | |
7282 | function_name_len -= 5; | |
7283 | } | |
4c4b4cd2 PH |
7284 | |
7285 | rename = (char *) alloca (rename_len * sizeof (char)); | |
69fadcdf JB |
7286 | strncpy (rename, function_name, function_name_len); |
7287 | xsnprintf (rename + function_name_len, rename_len - function_name_len, | |
7288 | "__%s___XR", name); | |
4c4b4cd2 PH |
7289 | } |
7290 | else | |
7291 | { | |
7292 | const int rename_len = strlen (name) + 6; | |
5b4ee69b | 7293 | |
4c4b4cd2 | 7294 | rename = (char *) alloca (rename_len * sizeof (char)); |
88c15c34 | 7295 | xsnprintf (rename, rename_len * sizeof (char), "%s___XR", name); |
4c4b4cd2 PH |
7296 | } |
7297 | ||
852dff6c | 7298 | return ada_find_any_type_symbol (rename); |
4c4b4cd2 PH |
7299 | } |
7300 | ||
14f9c5c9 | 7301 | /* Because of GNAT encoding conventions, several GDB symbols may match a |
4c4b4cd2 | 7302 | given type name. If the type denoted by TYPE0 is to be preferred to |
14f9c5c9 | 7303 | that of TYPE1 for purposes of type printing, return non-zero; |
4c4b4cd2 PH |
7304 | otherwise return 0. */ |
7305 | ||
14f9c5c9 | 7306 | int |
d2e4a39e | 7307 | ada_prefer_type (struct type *type0, struct type *type1) |
14f9c5c9 AS |
7308 | { |
7309 | if (type1 == NULL) | |
7310 | return 1; | |
7311 | else if (type0 == NULL) | |
7312 | return 0; | |
7313 | else if (TYPE_CODE (type1) == TYPE_CODE_VOID) | |
7314 | return 1; | |
7315 | else if (TYPE_CODE (type0) == TYPE_CODE_VOID) | |
7316 | return 0; | |
4c4b4cd2 PH |
7317 | else if (TYPE_NAME (type1) == NULL && TYPE_NAME (type0) != NULL) |
7318 | return 1; | |
ad82864c | 7319 | else if (ada_is_constrained_packed_array_type (type0)) |
14f9c5c9 | 7320 | return 1; |
4c4b4cd2 PH |
7321 | else if (ada_is_array_descriptor_type (type0) |
7322 | && !ada_is_array_descriptor_type (type1)) | |
14f9c5c9 | 7323 | return 1; |
aeb5907d JB |
7324 | else |
7325 | { | |
7326 | const char *type0_name = type_name_no_tag (type0); | |
7327 | const char *type1_name = type_name_no_tag (type1); | |
7328 | ||
7329 | if (type0_name != NULL && strstr (type0_name, "___XR") != NULL | |
7330 | && (type1_name == NULL || strstr (type1_name, "___XR") == NULL)) | |
7331 | return 1; | |
7332 | } | |
14f9c5c9 AS |
7333 | return 0; |
7334 | } | |
7335 | ||
7336 | /* The name of TYPE, which is either its TYPE_NAME, or, if that is | |
4c4b4cd2 PH |
7337 | null, its TYPE_TAG_NAME. Null if TYPE is null. */ |
7338 | ||
0d5cff50 | 7339 | const char * |
d2e4a39e | 7340 | ada_type_name (struct type *type) |
14f9c5c9 | 7341 | { |
d2e4a39e | 7342 | if (type == NULL) |
14f9c5c9 AS |
7343 | return NULL; |
7344 | else if (TYPE_NAME (type) != NULL) | |
7345 | return TYPE_NAME (type); | |
7346 | else | |
7347 | return TYPE_TAG_NAME (type); | |
7348 | } | |
7349 | ||
b4ba55a1 JB |
7350 | /* Search the list of "descriptive" types associated to TYPE for a type |
7351 | whose name is NAME. */ | |
7352 | ||
7353 | static struct type * | |
7354 | find_parallel_type_by_descriptive_type (struct type *type, const char *name) | |
7355 | { | |
7356 | struct type *result; | |
7357 | ||
7358 | /* If there no descriptive-type info, then there is no parallel type | |
7359 | to be found. */ | |
7360 | if (!HAVE_GNAT_AUX_INFO (type)) | |
7361 | return NULL; | |
7362 | ||
7363 | result = TYPE_DESCRIPTIVE_TYPE (type); | |
7364 | while (result != NULL) | |
7365 | { | |
0d5cff50 | 7366 | const char *result_name = ada_type_name (result); |
b4ba55a1 JB |
7367 | |
7368 | if (result_name == NULL) | |
7369 | { | |
7370 | warning (_("unexpected null name on descriptive type")); | |
7371 | return NULL; | |
7372 | } | |
7373 | ||
7374 | /* If the names match, stop. */ | |
7375 | if (strcmp (result_name, name) == 0) | |
7376 | break; | |
7377 | ||
7378 | /* Otherwise, look at the next item on the list, if any. */ | |
7379 | if (HAVE_GNAT_AUX_INFO (result)) | |
7380 | result = TYPE_DESCRIPTIVE_TYPE (result); | |
7381 | else | |
7382 | result = NULL; | |
7383 | } | |
7384 | ||
7385 | /* If we didn't find a match, see whether this is a packed array. With | |
7386 | older compilers, the descriptive type information is either absent or | |
7387 | irrelevant when it comes to packed arrays so the above lookup fails. | |
7388 | Fall back to using a parallel lookup by name in this case. */ | |
12ab9e09 | 7389 | if (result == NULL && ada_is_constrained_packed_array_type (type)) |
b4ba55a1 JB |
7390 | return ada_find_any_type (name); |
7391 | ||
7392 | return result; | |
7393 | } | |
7394 | ||
7395 | /* Find a parallel type to TYPE with the specified NAME, using the | |
7396 | descriptive type taken from the debugging information, if available, | |
7397 | and otherwise using the (slower) name-based method. */ | |
7398 | ||
7399 | static struct type * | |
7400 | ada_find_parallel_type_with_name (struct type *type, const char *name) | |
7401 | { | |
7402 | struct type *result = NULL; | |
7403 | ||
7404 | if (HAVE_GNAT_AUX_INFO (type)) | |
7405 | result = find_parallel_type_by_descriptive_type (type, name); | |
7406 | else | |
7407 | result = ada_find_any_type (name); | |
7408 | ||
7409 | return result; | |
7410 | } | |
7411 | ||
7412 | /* Same as above, but specify the name of the parallel type by appending | |
4c4b4cd2 | 7413 | SUFFIX to the name of TYPE. */ |
14f9c5c9 | 7414 | |
d2e4a39e | 7415 | struct type * |
ebf56fd3 | 7416 | ada_find_parallel_type (struct type *type, const char *suffix) |
14f9c5c9 | 7417 | { |
0d5cff50 DE |
7418 | char *name; |
7419 | const char *typename = ada_type_name (type); | |
14f9c5c9 | 7420 | int len; |
d2e4a39e | 7421 | |
14f9c5c9 AS |
7422 | if (typename == NULL) |
7423 | return NULL; | |
7424 | ||
7425 | len = strlen (typename); | |
7426 | ||
b4ba55a1 | 7427 | name = (char *) alloca (len + strlen (suffix) + 1); |
14f9c5c9 AS |
7428 | |
7429 | strcpy (name, typename); | |
7430 | strcpy (name + len, suffix); | |
7431 | ||
b4ba55a1 | 7432 | return ada_find_parallel_type_with_name (type, name); |
14f9c5c9 AS |
7433 | } |
7434 | ||
14f9c5c9 | 7435 | /* If TYPE is a variable-size record type, return the corresponding template |
4c4b4cd2 | 7436 | type describing its fields. Otherwise, return NULL. */ |
14f9c5c9 | 7437 | |
d2e4a39e AS |
7438 | static struct type * |
7439 | dynamic_template_type (struct type *type) | |
14f9c5c9 | 7440 | { |
61ee279c | 7441 | type = ada_check_typedef (type); |
14f9c5c9 AS |
7442 | |
7443 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT | |
d2e4a39e | 7444 | || ada_type_name (type) == NULL) |
14f9c5c9 | 7445 | return NULL; |
d2e4a39e | 7446 | else |
14f9c5c9 AS |
7447 | { |
7448 | int len = strlen (ada_type_name (type)); | |
5b4ee69b | 7449 | |
4c4b4cd2 PH |
7450 | if (len > 6 && strcmp (ada_type_name (type) + len - 6, "___XVE") == 0) |
7451 | return type; | |
14f9c5c9 | 7452 | else |
4c4b4cd2 | 7453 | return ada_find_parallel_type (type, "___XVE"); |
14f9c5c9 AS |
7454 | } |
7455 | } | |
7456 | ||
7457 | /* Assuming that TEMPL_TYPE is a union or struct type, returns | |
4c4b4cd2 | 7458 | non-zero iff field FIELD_NUM of TEMPL_TYPE has dynamic size. */ |
14f9c5c9 | 7459 | |
d2e4a39e AS |
7460 | static int |
7461 | is_dynamic_field (struct type *templ_type, int field_num) | |
14f9c5c9 AS |
7462 | { |
7463 | const char *name = TYPE_FIELD_NAME (templ_type, field_num); | |
5b4ee69b | 7464 | |
d2e4a39e | 7465 | return name != NULL |
14f9c5c9 AS |
7466 | && TYPE_CODE (TYPE_FIELD_TYPE (templ_type, field_num)) == TYPE_CODE_PTR |
7467 | && strstr (name, "___XVL") != NULL; | |
7468 | } | |
7469 | ||
4c4b4cd2 PH |
7470 | /* The index of the variant field of TYPE, or -1 if TYPE does not |
7471 | represent a variant record type. */ | |
14f9c5c9 | 7472 | |
d2e4a39e | 7473 | static int |
4c4b4cd2 | 7474 | variant_field_index (struct type *type) |
14f9c5c9 AS |
7475 | { |
7476 | int f; | |
7477 | ||
4c4b4cd2 PH |
7478 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT) |
7479 | return -1; | |
7480 | ||
7481 | for (f = 0; f < TYPE_NFIELDS (type); f += 1) | |
7482 | { | |
7483 | if (ada_is_variant_part (type, f)) | |
7484 | return f; | |
7485 | } | |
7486 | return -1; | |
14f9c5c9 AS |
7487 | } |
7488 | ||
4c4b4cd2 PH |
7489 | /* A record type with no fields. */ |
7490 | ||
d2e4a39e | 7491 | static struct type * |
e9bb382b | 7492 | empty_record (struct type *template) |
14f9c5c9 | 7493 | { |
e9bb382b | 7494 | struct type *type = alloc_type_copy (template); |
5b4ee69b | 7495 | |
14f9c5c9 AS |
7496 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
7497 | TYPE_NFIELDS (type) = 0; | |
7498 | TYPE_FIELDS (type) = NULL; | |
b1f33ddd | 7499 | INIT_CPLUS_SPECIFIC (type); |
14f9c5c9 AS |
7500 | TYPE_NAME (type) = "<empty>"; |
7501 | TYPE_TAG_NAME (type) = NULL; | |
14f9c5c9 AS |
7502 | TYPE_LENGTH (type) = 0; |
7503 | return type; | |
7504 | } | |
7505 | ||
7506 | /* An ordinary record type (with fixed-length fields) that describes | |
4c4b4cd2 PH |
7507 | the value of type TYPE at VALADDR or ADDRESS (see comments at |
7508 | the beginning of this section) VAL according to GNAT conventions. | |
7509 | DVAL0 should describe the (portion of a) record that contains any | |
df407dfe | 7510 | necessary discriminants. It should be NULL if value_type (VAL) is |
14f9c5c9 AS |
7511 | an outer-level type (i.e., as opposed to a branch of a variant.) A |
7512 | variant field (unless unchecked) is replaced by a particular branch | |
4c4b4cd2 | 7513 | of the variant. |
14f9c5c9 | 7514 | |
4c4b4cd2 PH |
7515 | If not KEEP_DYNAMIC_FIELDS, then all fields whose position or |
7516 | length are not statically known are discarded. As a consequence, | |
7517 | VALADDR, ADDRESS and DVAL0 are ignored. | |
7518 | ||
7519 | NOTE: Limitations: For now, we assume that dynamic fields and | |
7520 | variants occupy whole numbers of bytes. However, they need not be | |
7521 | byte-aligned. */ | |
7522 | ||
7523 | struct type * | |
10a2c479 | 7524 | ada_template_to_fixed_record_type_1 (struct type *type, |
fc1a4b47 | 7525 | const gdb_byte *valaddr, |
4c4b4cd2 PH |
7526 | CORE_ADDR address, struct value *dval0, |
7527 | int keep_dynamic_fields) | |
14f9c5c9 | 7528 | { |
d2e4a39e AS |
7529 | struct value *mark = value_mark (); |
7530 | struct value *dval; | |
7531 | struct type *rtype; | |
14f9c5c9 | 7532 | int nfields, bit_len; |
4c4b4cd2 | 7533 | int variant_field; |
14f9c5c9 | 7534 | long off; |
d94e4f4f | 7535 | int fld_bit_len; |
14f9c5c9 AS |
7536 | int f; |
7537 | ||
4c4b4cd2 PH |
7538 | /* Compute the number of fields in this record type that are going |
7539 | to be processed: unless keep_dynamic_fields, this includes only | |
7540 | fields whose position and length are static will be processed. */ | |
7541 | if (keep_dynamic_fields) | |
7542 | nfields = TYPE_NFIELDS (type); | |
7543 | else | |
7544 | { | |
7545 | nfields = 0; | |
76a01679 | 7546 | while (nfields < TYPE_NFIELDS (type) |
4c4b4cd2 PH |
7547 | && !ada_is_variant_part (type, nfields) |
7548 | && !is_dynamic_field (type, nfields)) | |
7549 | nfields++; | |
7550 | } | |
7551 | ||
e9bb382b | 7552 | rtype = alloc_type_copy (type); |
14f9c5c9 AS |
7553 | TYPE_CODE (rtype) = TYPE_CODE_STRUCT; |
7554 | INIT_CPLUS_SPECIFIC (rtype); | |
7555 | TYPE_NFIELDS (rtype) = nfields; | |
d2e4a39e | 7556 | TYPE_FIELDS (rtype) = (struct field *) |
14f9c5c9 AS |
7557 | TYPE_ALLOC (rtype, nfields * sizeof (struct field)); |
7558 | memset (TYPE_FIELDS (rtype), 0, sizeof (struct field) * nfields); | |
7559 | TYPE_NAME (rtype) = ada_type_name (type); | |
7560 | TYPE_TAG_NAME (rtype) = NULL; | |
876cecd0 | 7561 | TYPE_FIXED_INSTANCE (rtype) = 1; |
14f9c5c9 | 7562 | |
d2e4a39e AS |
7563 | off = 0; |
7564 | bit_len = 0; | |
4c4b4cd2 PH |
7565 | variant_field = -1; |
7566 | ||
14f9c5c9 AS |
7567 | for (f = 0; f < nfields; f += 1) |
7568 | { | |
6c038f32 PH |
7569 | off = align_value (off, field_alignment (type, f)) |
7570 | + TYPE_FIELD_BITPOS (type, f); | |
945b3a32 | 7571 | SET_FIELD_BITPOS (TYPE_FIELD (rtype, f), off); |
d2e4a39e | 7572 | TYPE_FIELD_BITSIZE (rtype, f) = 0; |
14f9c5c9 | 7573 | |
d2e4a39e | 7574 | if (ada_is_variant_part (type, f)) |
4c4b4cd2 PH |
7575 | { |
7576 | variant_field = f; | |
d94e4f4f | 7577 | fld_bit_len = 0; |
4c4b4cd2 | 7578 | } |
14f9c5c9 | 7579 | else if (is_dynamic_field (type, f)) |
4c4b4cd2 | 7580 | { |
284614f0 JB |
7581 | const gdb_byte *field_valaddr = valaddr; |
7582 | CORE_ADDR field_address = address; | |
7583 | struct type *field_type = | |
7584 | TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, f)); | |
7585 | ||
4c4b4cd2 | 7586 | if (dval0 == NULL) |
b5304971 JG |
7587 | { |
7588 | /* rtype's length is computed based on the run-time | |
7589 | value of discriminants. If the discriminants are not | |
7590 | initialized, the type size may be completely bogus and | |
0963b4bd | 7591 | GDB may fail to allocate a value for it. So check the |
b5304971 JG |
7592 | size first before creating the value. */ |
7593 | check_size (rtype); | |
7594 | dval = value_from_contents_and_address (rtype, valaddr, address); | |
7595 | } | |
4c4b4cd2 PH |
7596 | else |
7597 | dval = dval0; | |
7598 | ||
284614f0 JB |
7599 | /* If the type referenced by this field is an aligner type, we need |
7600 | to unwrap that aligner type, because its size might not be set. | |
7601 | Keeping the aligner type would cause us to compute the wrong | |
7602 | size for this field, impacting the offset of the all the fields | |
7603 | that follow this one. */ | |
7604 | if (ada_is_aligner_type (field_type)) | |
7605 | { | |
7606 | long field_offset = TYPE_FIELD_BITPOS (field_type, f); | |
7607 | ||
7608 | field_valaddr = cond_offset_host (field_valaddr, field_offset); | |
7609 | field_address = cond_offset_target (field_address, field_offset); | |
7610 | field_type = ada_aligned_type (field_type); | |
7611 | } | |
7612 | ||
7613 | field_valaddr = cond_offset_host (field_valaddr, | |
7614 | off / TARGET_CHAR_BIT); | |
7615 | field_address = cond_offset_target (field_address, | |
7616 | off / TARGET_CHAR_BIT); | |
7617 | ||
7618 | /* Get the fixed type of the field. Note that, in this case, | |
7619 | we do not want to get the real type out of the tag: if | |
7620 | the current field is the parent part of a tagged record, | |
7621 | we will get the tag of the object. Clearly wrong: the real | |
7622 | type of the parent is not the real type of the child. We | |
7623 | would end up in an infinite loop. */ | |
7624 | field_type = ada_get_base_type (field_type); | |
7625 | field_type = ada_to_fixed_type (field_type, field_valaddr, | |
7626 | field_address, dval, 0); | |
27f2a97b JB |
7627 | /* If the field size is already larger than the maximum |
7628 | object size, then the record itself will necessarily | |
7629 | be larger than the maximum object size. We need to make | |
7630 | this check now, because the size might be so ridiculously | |
7631 | large (due to an uninitialized variable in the inferior) | |
7632 | that it would cause an overflow when adding it to the | |
7633 | record size. */ | |
7634 | check_size (field_type); | |
284614f0 JB |
7635 | |
7636 | TYPE_FIELD_TYPE (rtype, f) = field_type; | |
4c4b4cd2 | 7637 | TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f); |
27f2a97b JB |
7638 | /* The multiplication can potentially overflow. But because |
7639 | the field length has been size-checked just above, and | |
7640 | assuming that the maximum size is a reasonable value, | |
7641 | an overflow should not happen in practice. So rather than | |
7642 | adding overflow recovery code to this already complex code, | |
7643 | we just assume that it's not going to happen. */ | |
d94e4f4f | 7644 | fld_bit_len = |
4c4b4cd2 PH |
7645 | TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, f)) * TARGET_CHAR_BIT; |
7646 | } | |
14f9c5c9 | 7647 | else |
4c4b4cd2 | 7648 | { |
5ded5331 JB |
7649 | /* Note: If this field's type is a typedef, it is important |
7650 | to preserve the typedef layer. | |
7651 | ||
7652 | Otherwise, we might be transforming a typedef to a fat | |
7653 | pointer (encoding a pointer to an unconstrained array), | |
7654 | into a basic fat pointer (encoding an unconstrained | |
7655 | array). As both types are implemented using the same | |
7656 | structure, the typedef is the only clue which allows us | |
7657 | to distinguish between the two options. Stripping it | |
7658 | would prevent us from printing this field appropriately. */ | |
7659 | TYPE_FIELD_TYPE (rtype, f) = TYPE_FIELD_TYPE (type, f); | |
4c4b4cd2 PH |
7660 | TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f); |
7661 | if (TYPE_FIELD_BITSIZE (type, f) > 0) | |
d94e4f4f | 7662 | fld_bit_len = |
4c4b4cd2 PH |
7663 | TYPE_FIELD_BITSIZE (rtype, f) = TYPE_FIELD_BITSIZE (type, f); |
7664 | else | |
5ded5331 JB |
7665 | { |
7666 | struct type *field_type = TYPE_FIELD_TYPE (type, f); | |
7667 | ||
7668 | /* We need to be careful of typedefs when computing | |
7669 | the length of our field. If this is a typedef, | |
7670 | get the length of the target type, not the length | |
7671 | of the typedef. */ | |
7672 | if (TYPE_CODE (field_type) == TYPE_CODE_TYPEDEF) | |
7673 | field_type = ada_typedef_target_type (field_type); | |
7674 | ||
7675 | fld_bit_len = | |
7676 | TYPE_LENGTH (ada_check_typedef (field_type)) * TARGET_CHAR_BIT; | |
7677 | } | |
4c4b4cd2 | 7678 | } |
14f9c5c9 | 7679 | if (off + fld_bit_len > bit_len) |
4c4b4cd2 | 7680 | bit_len = off + fld_bit_len; |
d94e4f4f | 7681 | off += fld_bit_len; |
4c4b4cd2 PH |
7682 | TYPE_LENGTH (rtype) = |
7683 | align_value (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT; | |
14f9c5c9 | 7684 | } |
4c4b4cd2 PH |
7685 | |
7686 | /* We handle the variant part, if any, at the end because of certain | |
b1f33ddd | 7687 | odd cases in which it is re-ordered so as NOT to be the last field of |
4c4b4cd2 PH |
7688 | the record. This can happen in the presence of representation |
7689 | clauses. */ | |
7690 | if (variant_field >= 0) | |
7691 | { | |
7692 | struct type *branch_type; | |
7693 | ||
7694 | off = TYPE_FIELD_BITPOS (rtype, variant_field); | |
7695 | ||
7696 | if (dval0 == NULL) | |
7697 | dval = value_from_contents_and_address (rtype, valaddr, address); | |
7698 | else | |
7699 | dval = dval0; | |
7700 | ||
7701 | branch_type = | |
7702 | to_fixed_variant_branch_type | |
7703 | (TYPE_FIELD_TYPE (type, variant_field), | |
7704 | cond_offset_host (valaddr, off / TARGET_CHAR_BIT), | |
7705 | cond_offset_target (address, off / TARGET_CHAR_BIT), dval); | |
7706 | if (branch_type == NULL) | |
7707 | { | |
7708 | for (f = variant_field + 1; f < TYPE_NFIELDS (rtype); f += 1) | |
7709 | TYPE_FIELDS (rtype)[f - 1] = TYPE_FIELDS (rtype)[f]; | |
7710 | TYPE_NFIELDS (rtype) -= 1; | |
7711 | } | |
7712 | else | |
7713 | { | |
7714 | TYPE_FIELD_TYPE (rtype, variant_field) = branch_type; | |
7715 | TYPE_FIELD_NAME (rtype, variant_field) = "S"; | |
7716 | fld_bit_len = | |
7717 | TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, variant_field)) * | |
7718 | TARGET_CHAR_BIT; | |
7719 | if (off + fld_bit_len > bit_len) | |
7720 | bit_len = off + fld_bit_len; | |
7721 | TYPE_LENGTH (rtype) = | |
7722 | align_value (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT; | |
7723 | } | |
7724 | } | |
7725 | ||
714e53ab PH |
7726 | /* According to exp_dbug.ads, the size of TYPE for variable-size records |
7727 | should contain the alignment of that record, which should be a strictly | |
7728 | positive value. If null or negative, then something is wrong, most | |
7729 | probably in the debug info. In that case, we don't round up the size | |
0963b4bd | 7730 | of the resulting type. If this record is not part of another structure, |
714e53ab PH |
7731 | the current RTYPE length might be good enough for our purposes. */ |
7732 | if (TYPE_LENGTH (type) <= 0) | |
7733 | { | |
323e0a4a AC |
7734 | if (TYPE_NAME (rtype)) |
7735 | warning (_("Invalid type size for `%s' detected: %d."), | |
7736 | TYPE_NAME (rtype), TYPE_LENGTH (type)); | |
7737 | else | |
7738 | warning (_("Invalid type size for <unnamed> detected: %d."), | |
7739 | TYPE_LENGTH (type)); | |
714e53ab PH |
7740 | } |
7741 | else | |
7742 | { | |
7743 | TYPE_LENGTH (rtype) = align_value (TYPE_LENGTH (rtype), | |
7744 | TYPE_LENGTH (type)); | |
7745 | } | |
14f9c5c9 AS |
7746 | |
7747 | value_free_to_mark (mark); | |
d2e4a39e | 7748 | if (TYPE_LENGTH (rtype) > varsize_limit) |
323e0a4a | 7749 | error (_("record type with dynamic size is larger than varsize-limit")); |
14f9c5c9 AS |
7750 | return rtype; |
7751 | } | |
7752 | ||
4c4b4cd2 PH |
7753 | /* As for ada_template_to_fixed_record_type_1 with KEEP_DYNAMIC_FIELDS |
7754 | of 1. */ | |
14f9c5c9 | 7755 | |
d2e4a39e | 7756 | static struct type * |
fc1a4b47 | 7757 | template_to_fixed_record_type (struct type *type, const gdb_byte *valaddr, |
4c4b4cd2 PH |
7758 | CORE_ADDR address, struct value *dval0) |
7759 | { | |
7760 | return ada_template_to_fixed_record_type_1 (type, valaddr, | |
7761 | address, dval0, 1); | |
7762 | } | |
7763 | ||
7764 | /* An ordinary record type in which ___XVL-convention fields and | |
7765 | ___XVU- and ___XVN-convention field types in TYPE0 are replaced with | |
7766 | static approximations, containing all possible fields. Uses | |
7767 | no runtime values. Useless for use in values, but that's OK, | |
7768 | since the results are used only for type determinations. Works on both | |
7769 | structs and unions. Representation note: to save space, we memorize | |
7770 | the result of this function in the TYPE_TARGET_TYPE of the | |
7771 | template type. */ | |
7772 | ||
7773 | static struct type * | |
7774 | template_to_static_fixed_type (struct type *type0) | |
14f9c5c9 AS |
7775 | { |
7776 | struct type *type; | |
7777 | int nfields; | |
7778 | int f; | |
7779 | ||
4c4b4cd2 PH |
7780 | if (TYPE_TARGET_TYPE (type0) != NULL) |
7781 | return TYPE_TARGET_TYPE (type0); | |
7782 | ||
7783 | nfields = TYPE_NFIELDS (type0); | |
7784 | type = type0; | |
14f9c5c9 AS |
7785 | |
7786 | for (f = 0; f < nfields; f += 1) | |
7787 | { | |
61ee279c | 7788 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type0, f)); |
4c4b4cd2 | 7789 | struct type *new_type; |
14f9c5c9 | 7790 | |
4c4b4cd2 PH |
7791 | if (is_dynamic_field (type0, f)) |
7792 | new_type = to_static_fixed_type (TYPE_TARGET_TYPE (field_type)); | |
14f9c5c9 | 7793 | else |
f192137b | 7794 | new_type = static_unwrap_type (field_type); |
4c4b4cd2 PH |
7795 | if (type == type0 && new_type != field_type) |
7796 | { | |
e9bb382b | 7797 | TYPE_TARGET_TYPE (type0) = type = alloc_type_copy (type0); |
4c4b4cd2 PH |
7798 | TYPE_CODE (type) = TYPE_CODE (type0); |
7799 | INIT_CPLUS_SPECIFIC (type); | |
7800 | TYPE_NFIELDS (type) = nfields; | |
7801 | TYPE_FIELDS (type) = (struct field *) | |
7802 | TYPE_ALLOC (type, nfields * sizeof (struct field)); | |
7803 | memcpy (TYPE_FIELDS (type), TYPE_FIELDS (type0), | |
7804 | sizeof (struct field) * nfields); | |
7805 | TYPE_NAME (type) = ada_type_name (type0); | |
7806 | TYPE_TAG_NAME (type) = NULL; | |
876cecd0 | 7807 | TYPE_FIXED_INSTANCE (type) = 1; |
4c4b4cd2 PH |
7808 | TYPE_LENGTH (type) = 0; |
7809 | } | |
7810 | TYPE_FIELD_TYPE (type, f) = new_type; | |
7811 | TYPE_FIELD_NAME (type, f) = TYPE_FIELD_NAME (type0, f); | |
14f9c5c9 | 7812 | } |
14f9c5c9 AS |
7813 | return type; |
7814 | } | |
7815 | ||
4c4b4cd2 | 7816 | /* Given an object of type TYPE whose contents are at VALADDR and |
5823c3ef JB |
7817 | whose address in memory is ADDRESS, returns a revision of TYPE, |
7818 | which should be a non-dynamic-sized record, in which the variant | |
7819 | part, if any, is replaced with the appropriate branch. Looks | |
4c4b4cd2 PH |
7820 | for discriminant values in DVAL0, which can be NULL if the record |
7821 | contains the necessary discriminant values. */ | |
7822 | ||
d2e4a39e | 7823 | static struct type * |
fc1a4b47 | 7824 | to_record_with_fixed_variant_part (struct type *type, const gdb_byte *valaddr, |
4c4b4cd2 | 7825 | CORE_ADDR address, struct value *dval0) |
14f9c5c9 | 7826 | { |
d2e4a39e | 7827 | struct value *mark = value_mark (); |
4c4b4cd2 | 7828 | struct value *dval; |
d2e4a39e | 7829 | struct type *rtype; |
14f9c5c9 AS |
7830 | struct type *branch_type; |
7831 | int nfields = TYPE_NFIELDS (type); | |
4c4b4cd2 | 7832 | int variant_field = variant_field_index (type); |
14f9c5c9 | 7833 | |
4c4b4cd2 | 7834 | if (variant_field == -1) |
14f9c5c9 AS |
7835 | return type; |
7836 | ||
4c4b4cd2 PH |
7837 | if (dval0 == NULL) |
7838 | dval = value_from_contents_and_address (type, valaddr, address); | |
7839 | else | |
7840 | dval = dval0; | |
7841 | ||
e9bb382b | 7842 | rtype = alloc_type_copy (type); |
14f9c5c9 | 7843 | TYPE_CODE (rtype) = TYPE_CODE_STRUCT; |
4c4b4cd2 PH |
7844 | INIT_CPLUS_SPECIFIC (rtype); |
7845 | TYPE_NFIELDS (rtype) = nfields; | |
d2e4a39e AS |
7846 | TYPE_FIELDS (rtype) = |
7847 | (struct field *) TYPE_ALLOC (rtype, nfields * sizeof (struct field)); | |
7848 | memcpy (TYPE_FIELDS (rtype), TYPE_FIELDS (type), | |
4c4b4cd2 | 7849 | sizeof (struct field) * nfields); |
14f9c5c9 AS |
7850 | TYPE_NAME (rtype) = ada_type_name (type); |
7851 | TYPE_TAG_NAME (rtype) = NULL; | |
876cecd0 | 7852 | TYPE_FIXED_INSTANCE (rtype) = 1; |
14f9c5c9 AS |
7853 | TYPE_LENGTH (rtype) = TYPE_LENGTH (type); |
7854 | ||
4c4b4cd2 PH |
7855 | branch_type = to_fixed_variant_branch_type |
7856 | (TYPE_FIELD_TYPE (type, variant_field), | |
d2e4a39e | 7857 | cond_offset_host (valaddr, |
4c4b4cd2 PH |
7858 | TYPE_FIELD_BITPOS (type, variant_field) |
7859 | / TARGET_CHAR_BIT), | |
d2e4a39e | 7860 | cond_offset_target (address, |
4c4b4cd2 PH |
7861 | TYPE_FIELD_BITPOS (type, variant_field) |
7862 | / TARGET_CHAR_BIT), dval); | |
d2e4a39e | 7863 | if (branch_type == NULL) |
14f9c5c9 | 7864 | { |
4c4b4cd2 | 7865 | int f; |
5b4ee69b | 7866 | |
4c4b4cd2 PH |
7867 | for (f = variant_field + 1; f < nfields; f += 1) |
7868 | TYPE_FIELDS (rtype)[f - 1] = TYPE_FIELDS (rtype)[f]; | |
14f9c5c9 | 7869 | TYPE_NFIELDS (rtype) -= 1; |
14f9c5c9 AS |
7870 | } |
7871 | else | |
7872 | { | |
4c4b4cd2 PH |
7873 | TYPE_FIELD_TYPE (rtype, variant_field) = branch_type; |
7874 | TYPE_FIELD_NAME (rtype, variant_field) = "S"; | |
7875 | TYPE_FIELD_BITSIZE (rtype, variant_field) = 0; | |
14f9c5c9 | 7876 | TYPE_LENGTH (rtype) += TYPE_LENGTH (branch_type); |
14f9c5c9 | 7877 | } |
4c4b4cd2 | 7878 | TYPE_LENGTH (rtype) -= TYPE_LENGTH (TYPE_FIELD_TYPE (type, variant_field)); |
d2e4a39e | 7879 | |
4c4b4cd2 | 7880 | value_free_to_mark (mark); |
14f9c5c9 AS |
7881 | return rtype; |
7882 | } | |
7883 | ||
7884 | /* An ordinary record type (with fixed-length fields) that describes | |
7885 | the value at (TYPE0, VALADDR, ADDRESS) [see explanation at | |
7886 | beginning of this section]. Any necessary discriminants' values | |
4c4b4cd2 PH |
7887 | should be in DVAL, a record value; it may be NULL if the object |
7888 | at ADDR itself contains any necessary discriminant values. | |
7889 | Additionally, VALADDR and ADDRESS may also be NULL if no discriminant | |
7890 | values from the record are needed. Except in the case that DVAL, | |
7891 | VALADDR, and ADDRESS are all 0 or NULL, a variant field (unless | |
7892 | unchecked) is replaced by a particular branch of the variant. | |
7893 | ||
7894 | NOTE: the case in which DVAL and VALADDR are NULL and ADDRESS is 0 | |
7895 | is questionable and may be removed. It can arise during the | |
7896 | processing of an unconstrained-array-of-record type where all the | |
7897 | variant branches have exactly the same size. This is because in | |
7898 | such cases, the compiler does not bother to use the XVS convention | |
7899 | when encoding the record. I am currently dubious of this | |
7900 | shortcut and suspect the compiler should be altered. FIXME. */ | |
14f9c5c9 | 7901 | |
d2e4a39e | 7902 | static struct type * |
fc1a4b47 | 7903 | to_fixed_record_type (struct type *type0, const gdb_byte *valaddr, |
4c4b4cd2 | 7904 | CORE_ADDR address, struct value *dval) |
14f9c5c9 | 7905 | { |
d2e4a39e | 7906 | struct type *templ_type; |
14f9c5c9 | 7907 | |
876cecd0 | 7908 | if (TYPE_FIXED_INSTANCE (type0)) |
4c4b4cd2 PH |
7909 | return type0; |
7910 | ||
d2e4a39e | 7911 | templ_type = dynamic_template_type (type0); |
14f9c5c9 AS |
7912 | |
7913 | if (templ_type != NULL) | |
7914 | return template_to_fixed_record_type (templ_type, valaddr, address, dval); | |
4c4b4cd2 PH |
7915 | else if (variant_field_index (type0) >= 0) |
7916 | { | |
7917 | if (dval == NULL && valaddr == NULL && address == 0) | |
7918 | return type0; | |
7919 | return to_record_with_fixed_variant_part (type0, valaddr, address, | |
7920 | dval); | |
7921 | } | |
14f9c5c9 AS |
7922 | else |
7923 | { | |
876cecd0 | 7924 | TYPE_FIXED_INSTANCE (type0) = 1; |
14f9c5c9 AS |
7925 | return type0; |
7926 | } | |
7927 | ||
7928 | } | |
7929 | ||
7930 | /* An ordinary record type (with fixed-length fields) that describes | |
7931 | the value at (VAR_TYPE0, VALADDR, ADDRESS), where VAR_TYPE0 is a | |
7932 | union type. Any necessary discriminants' values should be in DVAL, | |
7933 | a record value. That is, this routine selects the appropriate | |
7934 | branch of the union at ADDR according to the discriminant value | |
b1f33ddd | 7935 | indicated in the union's type name. Returns VAR_TYPE0 itself if |
0963b4bd | 7936 | it represents a variant subject to a pragma Unchecked_Union. */ |
14f9c5c9 | 7937 | |
d2e4a39e | 7938 | static struct type * |
fc1a4b47 | 7939 | to_fixed_variant_branch_type (struct type *var_type0, const gdb_byte *valaddr, |
4c4b4cd2 | 7940 | CORE_ADDR address, struct value *dval) |
14f9c5c9 AS |
7941 | { |
7942 | int which; | |
d2e4a39e AS |
7943 | struct type *templ_type; |
7944 | struct type *var_type; | |
14f9c5c9 AS |
7945 | |
7946 | if (TYPE_CODE (var_type0) == TYPE_CODE_PTR) | |
7947 | var_type = TYPE_TARGET_TYPE (var_type0); | |
d2e4a39e | 7948 | else |
14f9c5c9 AS |
7949 | var_type = var_type0; |
7950 | ||
7951 | templ_type = ada_find_parallel_type (var_type, "___XVU"); | |
7952 | ||
7953 | if (templ_type != NULL) | |
7954 | var_type = templ_type; | |
7955 | ||
b1f33ddd JB |
7956 | if (is_unchecked_variant (var_type, value_type (dval))) |
7957 | return var_type0; | |
d2e4a39e AS |
7958 | which = |
7959 | ada_which_variant_applies (var_type, | |
0fd88904 | 7960 | value_type (dval), value_contents (dval)); |
14f9c5c9 AS |
7961 | |
7962 | if (which < 0) | |
e9bb382b | 7963 | return empty_record (var_type); |
14f9c5c9 | 7964 | else if (is_dynamic_field (var_type, which)) |
4c4b4cd2 | 7965 | return to_fixed_record_type |
d2e4a39e AS |
7966 | (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (var_type, which)), |
7967 | valaddr, address, dval); | |
4c4b4cd2 | 7968 | else if (variant_field_index (TYPE_FIELD_TYPE (var_type, which)) >= 0) |
d2e4a39e AS |
7969 | return |
7970 | to_fixed_record_type | |
7971 | (TYPE_FIELD_TYPE (var_type, which), valaddr, address, dval); | |
14f9c5c9 AS |
7972 | else |
7973 | return TYPE_FIELD_TYPE (var_type, which); | |
7974 | } | |
7975 | ||
7976 | /* Assuming that TYPE0 is an array type describing the type of a value | |
7977 | at ADDR, and that DVAL describes a record containing any | |
7978 | discriminants used in TYPE0, returns a type for the value that | |
7979 | contains no dynamic components (that is, no components whose sizes | |
7980 | are determined by run-time quantities). Unless IGNORE_TOO_BIG is | |
7981 | true, gives an error message if the resulting type's size is over | |
4c4b4cd2 | 7982 | varsize_limit. */ |
14f9c5c9 | 7983 | |
d2e4a39e AS |
7984 | static struct type * |
7985 | to_fixed_array_type (struct type *type0, struct value *dval, | |
4c4b4cd2 | 7986 | int ignore_too_big) |
14f9c5c9 | 7987 | { |
d2e4a39e AS |
7988 | struct type *index_type_desc; |
7989 | struct type *result; | |
ad82864c | 7990 | int constrained_packed_array_p; |
14f9c5c9 | 7991 | |
b0dd7688 | 7992 | type0 = ada_check_typedef (type0); |
284614f0 | 7993 | if (TYPE_FIXED_INSTANCE (type0)) |
4c4b4cd2 | 7994 | return type0; |
14f9c5c9 | 7995 | |
ad82864c JB |
7996 | constrained_packed_array_p = ada_is_constrained_packed_array_type (type0); |
7997 | if (constrained_packed_array_p) | |
7998 | type0 = decode_constrained_packed_array_type (type0); | |
284614f0 | 7999 | |
14f9c5c9 | 8000 | index_type_desc = ada_find_parallel_type (type0, "___XA"); |
28c85d6c | 8001 | ada_fixup_array_indexes_type (index_type_desc); |
14f9c5c9 AS |
8002 | if (index_type_desc == NULL) |
8003 | { | |
61ee279c | 8004 | struct type *elt_type0 = ada_check_typedef (TYPE_TARGET_TYPE (type0)); |
5b4ee69b | 8005 | |
14f9c5c9 | 8006 | /* NOTE: elt_type---the fixed version of elt_type0---should never |
4c4b4cd2 PH |
8007 | depend on the contents of the array in properly constructed |
8008 | debugging data. */ | |
529cad9c PH |
8009 | /* Create a fixed version of the array element type. |
8010 | We're not providing the address of an element here, | |
e1d5a0d2 | 8011 | and thus the actual object value cannot be inspected to do |
529cad9c PH |
8012 | the conversion. This should not be a problem, since arrays of |
8013 | unconstrained objects are not allowed. In particular, all | |
8014 | the elements of an array of a tagged type should all be of | |
8015 | the same type specified in the debugging info. No need to | |
8016 | consult the object tag. */ | |
1ed6ede0 | 8017 | struct type *elt_type = ada_to_fixed_type (elt_type0, 0, 0, dval, 1); |
14f9c5c9 | 8018 | |
284614f0 JB |
8019 | /* Make sure we always create a new array type when dealing with |
8020 | packed array types, since we're going to fix-up the array | |
8021 | type length and element bitsize a little further down. */ | |
ad82864c | 8022 | if (elt_type0 == elt_type && !constrained_packed_array_p) |
4c4b4cd2 | 8023 | result = type0; |
14f9c5c9 | 8024 | else |
e9bb382b | 8025 | result = create_array_type (alloc_type_copy (type0), |
4c4b4cd2 | 8026 | elt_type, TYPE_INDEX_TYPE (type0)); |
14f9c5c9 AS |
8027 | } |
8028 | else | |
8029 | { | |
8030 | int i; | |
8031 | struct type *elt_type0; | |
8032 | ||
8033 | elt_type0 = type0; | |
8034 | for (i = TYPE_NFIELDS (index_type_desc); i > 0; i -= 1) | |
4c4b4cd2 | 8035 | elt_type0 = TYPE_TARGET_TYPE (elt_type0); |
14f9c5c9 AS |
8036 | |
8037 | /* NOTE: result---the fixed version of elt_type0---should never | |
4c4b4cd2 PH |
8038 | depend on the contents of the array in properly constructed |
8039 | debugging data. */ | |
529cad9c PH |
8040 | /* Create a fixed version of the array element type. |
8041 | We're not providing the address of an element here, | |
e1d5a0d2 | 8042 | and thus the actual object value cannot be inspected to do |
529cad9c PH |
8043 | the conversion. This should not be a problem, since arrays of |
8044 | unconstrained objects are not allowed. In particular, all | |
8045 | the elements of an array of a tagged type should all be of | |
8046 | the same type specified in the debugging info. No need to | |
8047 | consult the object tag. */ | |
1ed6ede0 JB |
8048 | result = |
8049 | ada_to_fixed_type (ada_check_typedef (elt_type0), 0, 0, dval, 1); | |
1ce677a4 UW |
8050 | |
8051 | elt_type0 = type0; | |
14f9c5c9 | 8052 | for (i = TYPE_NFIELDS (index_type_desc) - 1; i >= 0; i -= 1) |
4c4b4cd2 PH |
8053 | { |
8054 | struct type *range_type = | |
28c85d6c | 8055 | to_fixed_range_type (TYPE_FIELD_TYPE (index_type_desc, i), dval); |
5b4ee69b | 8056 | |
e9bb382b | 8057 | result = create_array_type (alloc_type_copy (elt_type0), |
4c4b4cd2 | 8058 | result, range_type); |
1ce677a4 | 8059 | elt_type0 = TYPE_TARGET_TYPE (elt_type0); |
4c4b4cd2 | 8060 | } |
d2e4a39e | 8061 | if (!ignore_too_big && TYPE_LENGTH (result) > varsize_limit) |
323e0a4a | 8062 | error (_("array type with dynamic size is larger than varsize-limit")); |
14f9c5c9 AS |
8063 | } |
8064 | ||
2e6fda7d JB |
8065 | /* We want to preserve the type name. This can be useful when |
8066 | trying to get the type name of a value that has already been | |
8067 | printed (for instance, if the user did "print VAR; whatis $". */ | |
8068 | TYPE_NAME (result) = TYPE_NAME (type0); | |
8069 | ||
ad82864c | 8070 | if (constrained_packed_array_p) |
284614f0 JB |
8071 | { |
8072 | /* So far, the resulting type has been created as if the original | |
8073 | type was a regular (non-packed) array type. As a result, the | |
8074 | bitsize of the array elements needs to be set again, and the array | |
8075 | length needs to be recomputed based on that bitsize. */ | |
8076 | int len = TYPE_LENGTH (result) / TYPE_LENGTH (TYPE_TARGET_TYPE (result)); | |
8077 | int elt_bitsize = TYPE_FIELD_BITSIZE (type0, 0); | |
8078 | ||
8079 | TYPE_FIELD_BITSIZE (result, 0) = TYPE_FIELD_BITSIZE (type0, 0); | |
8080 | TYPE_LENGTH (result) = len * elt_bitsize / HOST_CHAR_BIT; | |
8081 | if (TYPE_LENGTH (result) * HOST_CHAR_BIT < len * elt_bitsize) | |
8082 | TYPE_LENGTH (result)++; | |
8083 | } | |
8084 | ||
876cecd0 | 8085 | TYPE_FIXED_INSTANCE (result) = 1; |
14f9c5c9 | 8086 | return result; |
d2e4a39e | 8087 | } |
14f9c5c9 AS |
8088 | |
8089 | ||
8090 | /* A standard type (containing no dynamically sized components) | |
8091 | corresponding to TYPE for the value (TYPE, VALADDR, ADDRESS) | |
8092 | DVAL describes a record containing any discriminants used in TYPE0, | |
4c4b4cd2 | 8093 | and may be NULL if there are none, or if the object of type TYPE at |
529cad9c PH |
8094 | ADDRESS or in VALADDR contains these discriminants. |
8095 | ||
1ed6ede0 JB |
8096 | If CHECK_TAG is not null, in the case of tagged types, this function |
8097 | attempts to locate the object's tag and use it to compute the actual | |
8098 | type. However, when ADDRESS is null, we cannot use it to determine the | |
8099 | location of the tag, and therefore compute the tagged type's actual type. | |
8100 | So we return the tagged type without consulting the tag. */ | |
529cad9c | 8101 | |
f192137b JB |
8102 | static struct type * |
8103 | ada_to_fixed_type_1 (struct type *type, const gdb_byte *valaddr, | |
1ed6ede0 | 8104 | CORE_ADDR address, struct value *dval, int check_tag) |
14f9c5c9 | 8105 | { |
61ee279c | 8106 | type = ada_check_typedef (type); |
d2e4a39e AS |
8107 | switch (TYPE_CODE (type)) |
8108 | { | |
8109 | default: | |
14f9c5c9 | 8110 | return type; |
d2e4a39e | 8111 | case TYPE_CODE_STRUCT: |
4c4b4cd2 | 8112 | { |
76a01679 | 8113 | struct type *static_type = to_static_fixed_type (type); |
1ed6ede0 JB |
8114 | struct type *fixed_record_type = |
8115 | to_fixed_record_type (type, valaddr, address, NULL); | |
5b4ee69b | 8116 | |
529cad9c PH |
8117 | /* If STATIC_TYPE is a tagged type and we know the object's address, |
8118 | then we can determine its tag, and compute the object's actual | |
0963b4bd | 8119 | type from there. Note that we have to use the fixed record |
1ed6ede0 JB |
8120 | type (the parent part of the record may have dynamic fields |
8121 | and the way the location of _tag is expressed may depend on | |
8122 | them). */ | |
529cad9c | 8123 | |
1ed6ede0 | 8124 | if (check_tag && address != 0 && ada_is_tagged_type (static_type, 0)) |
76a01679 | 8125 | { |
b50d69b5 JG |
8126 | struct value *tag = |
8127 | value_tag_from_contents_and_address | |
8128 | (fixed_record_type, | |
8129 | valaddr, | |
8130 | address); | |
8131 | struct type *real_type = type_from_tag (tag); | |
8132 | struct value *obj = | |
8133 | value_from_contents_and_address (fixed_record_type, | |
8134 | valaddr, | |
8135 | address); | |
76a01679 | 8136 | if (real_type != NULL) |
b50d69b5 JG |
8137 | return to_fixed_record_type |
8138 | (real_type, NULL, | |
8139 | value_address (ada_tag_value_at_base_address (obj)), NULL); | |
76a01679 | 8140 | } |
4af88198 JB |
8141 | |
8142 | /* Check to see if there is a parallel ___XVZ variable. | |
8143 | If there is, then it provides the actual size of our type. */ | |
8144 | else if (ada_type_name (fixed_record_type) != NULL) | |
8145 | { | |
0d5cff50 | 8146 | const char *name = ada_type_name (fixed_record_type); |
4af88198 JB |
8147 | char *xvz_name = alloca (strlen (name) + 7 /* "___XVZ\0" */); |
8148 | int xvz_found = 0; | |
8149 | LONGEST size; | |
8150 | ||
88c15c34 | 8151 | xsnprintf (xvz_name, strlen (name) + 7, "%s___XVZ", name); |
4af88198 JB |
8152 | size = get_int_var_value (xvz_name, &xvz_found); |
8153 | if (xvz_found && TYPE_LENGTH (fixed_record_type) != size) | |
8154 | { | |
8155 | fixed_record_type = copy_type (fixed_record_type); | |
8156 | TYPE_LENGTH (fixed_record_type) = size; | |
8157 | ||
8158 | /* The FIXED_RECORD_TYPE may have be a stub. We have | |
8159 | observed this when the debugging info is STABS, and | |
8160 | apparently it is something that is hard to fix. | |
8161 | ||
8162 | In practice, we don't need the actual type definition | |
8163 | at all, because the presence of the XVZ variable allows us | |
8164 | to assume that there must be a XVS type as well, which we | |
8165 | should be able to use later, when we need the actual type | |
8166 | definition. | |
8167 | ||
8168 | In the meantime, pretend that the "fixed" type we are | |
8169 | returning is NOT a stub, because this can cause trouble | |
8170 | when using this type to create new types targeting it. | |
8171 | Indeed, the associated creation routines often check | |
8172 | whether the target type is a stub and will try to replace | |
0963b4bd | 8173 | it, thus using a type with the wrong size. This, in turn, |
4af88198 JB |
8174 | might cause the new type to have the wrong size too. |
8175 | Consider the case of an array, for instance, where the size | |
8176 | of the array is computed from the number of elements in | |
8177 | our array multiplied by the size of its element. */ | |
8178 | TYPE_STUB (fixed_record_type) = 0; | |
8179 | } | |
8180 | } | |
1ed6ede0 | 8181 | return fixed_record_type; |
4c4b4cd2 | 8182 | } |
d2e4a39e | 8183 | case TYPE_CODE_ARRAY: |
4c4b4cd2 | 8184 | return to_fixed_array_type (type, dval, 1); |
d2e4a39e AS |
8185 | case TYPE_CODE_UNION: |
8186 | if (dval == NULL) | |
4c4b4cd2 | 8187 | return type; |
d2e4a39e | 8188 | else |
4c4b4cd2 | 8189 | return to_fixed_variant_branch_type (type, valaddr, address, dval); |
d2e4a39e | 8190 | } |
14f9c5c9 AS |
8191 | } |
8192 | ||
f192137b JB |
8193 | /* The same as ada_to_fixed_type_1, except that it preserves the type |
8194 | if it is a TYPE_CODE_TYPEDEF of a type that is already fixed. | |
96dbd2c1 JB |
8195 | |
8196 | The typedef layer needs be preserved in order to differentiate between | |
8197 | arrays and array pointers when both types are implemented using the same | |
8198 | fat pointer. In the array pointer case, the pointer is encoded as | |
8199 | a typedef of the pointer type. For instance, considering: | |
8200 | ||
8201 | type String_Access is access String; | |
8202 | S1 : String_Access := null; | |
8203 | ||
8204 | To the debugger, S1 is defined as a typedef of type String. But | |
8205 | to the user, it is a pointer. So if the user tries to print S1, | |
8206 | we should not dereference the array, but print the array address | |
8207 | instead. | |
8208 | ||
8209 | If we didn't preserve the typedef layer, we would lose the fact that | |
8210 | the type is to be presented as a pointer (needs de-reference before | |
8211 | being printed). And we would also use the source-level type name. */ | |
f192137b JB |
8212 | |
8213 | struct type * | |
8214 | ada_to_fixed_type (struct type *type, const gdb_byte *valaddr, | |
8215 | CORE_ADDR address, struct value *dval, int check_tag) | |
8216 | ||
8217 | { | |
8218 | struct type *fixed_type = | |
8219 | ada_to_fixed_type_1 (type, valaddr, address, dval, check_tag); | |
8220 | ||
96dbd2c1 JB |
8221 | /* If TYPE is a typedef and its target type is the same as the FIXED_TYPE, |
8222 | then preserve the typedef layer. | |
8223 | ||
8224 | Implementation note: We can only check the main-type portion of | |
8225 | the TYPE and FIXED_TYPE, because eliminating the typedef layer | |
8226 | from TYPE now returns a type that has the same instance flags | |
8227 | as TYPE. For instance, if TYPE is a "typedef const", and its | |
8228 | target type is a "struct", then the typedef elimination will return | |
8229 | a "const" version of the target type. See check_typedef for more | |
8230 | details about how the typedef layer elimination is done. | |
8231 | ||
8232 | brobecker/2010-11-19: It seems to me that the only case where it is | |
8233 | useful to preserve the typedef layer is when dealing with fat pointers. | |
8234 | Perhaps, we could add a check for that and preserve the typedef layer | |
8235 | only in that situation. But this seems unecessary so far, probably | |
8236 | because we call check_typedef/ada_check_typedef pretty much everywhere. | |
8237 | */ | |
f192137b | 8238 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF |
720d1a40 | 8239 | && (TYPE_MAIN_TYPE (ada_typedef_target_type (type)) |
96dbd2c1 | 8240 | == TYPE_MAIN_TYPE (fixed_type))) |
f192137b JB |
8241 | return type; |
8242 | ||
8243 | return fixed_type; | |
8244 | } | |
8245 | ||
14f9c5c9 | 8246 | /* A standard (static-sized) type corresponding as well as possible to |
4c4b4cd2 | 8247 | TYPE0, but based on no runtime data. */ |
14f9c5c9 | 8248 | |
d2e4a39e AS |
8249 | static struct type * |
8250 | to_static_fixed_type (struct type *type0) | |
14f9c5c9 | 8251 | { |
d2e4a39e | 8252 | struct type *type; |
14f9c5c9 AS |
8253 | |
8254 | if (type0 == NULL) | |
8255 | return NULL; | |
8256 | ||
876cecd0 | 8257 | if (TYPE_FIXED_INSTANCE (type0)) |
4c4b4cd2 PH |
8258 | return type0; |
8259 | ||
61ee279c | 8260 | type0 = ada_check_typedef (type0); |
d2e4a39e | 8261 | |
14f9c5c9 AS |
8262 | switch (TYPE_CODE (type0)) |
8263 | { | |
8264 | default: | |
8265 | return type0; | |
8266 | case TYPE_CODE_STRUCT: | |
8267 | type = dynamic_template_type (type0); | |
d2e4a39e | 8268 | if (type != NULL) |
4c4b4cd2 PH |
8269 | return template_to_static_fixed_type (type); |
8270 | else | |
8271 | return template_to_static_fixed_type (type0); | |
14f9c5c9 AS |
8272 | case TYPE_CODE_UNION: |
8273 | type = ada_find_parallel_type (type0, "___XVU"); | |
8274 | if (type != NULL) | |
4c4b4cd2 PH |
8275 | return template_to_static_fixed_type (type); |
8276 | else | |
8277 | return template_to_static_fixed_type (type0); | |
14f9c5c9 AS |
8278 | } |
8279 | } | |
8280 | ||
4c4b4cd2 PH |
8281 | /* A static approximation of TYPE with all type wrappers removed. */ |
8282 | ||
d2e4a39e AS |
8283 | static struct type * |
8284 | static_unwrap_type (struct type *type) | |
14f9c5c9 AS |
8285 | { |
8286 | if (ada_is_aligner_type (type)) | |
8287 | { | |
61ee279c | 8288 | struct type *type1 = TYPE_FIELD_TYPE (ada_check_typedef (type), 0); |
14f9c5c9 | 8289 | if (ada_type_name (type1) == NULL) |
4c4b4cd2 | 8290 | TYPE_NAME (type1) = ada_type_name (type); |
14f9c5c9 AS |
8291 | |
8292 | return static_unwrap_type (type1); | |
8293 | } | |
d2e4a39e | 8294 | else |
14f9c5c9 | 8295 | { |
d2e4a39e | 8296 | struct type *raw_real_type = ada_get_base_type (type); |
5b4ee69b | 8297 | |
d2e4a39e | 8298 | if (raw_real_type == type) |
4c4b4cd2 | 8299 | return type; |
14f9c5c9 | 8300 | else |
4c4b4cd2 | 8301 | return to_static_fixed_type (raw_real_type); |
14f9c5c9 AS |
8302 | } |
8303 | } | |
8304 | ||
8305 | /* In some cases, incomplete and private types require | |
4c4b4cd2 | 8306 | cross-references that are not resolved as records (for example, |
14f9c5c9 AS |
8307 | type Foo; |
8308 | type FooP is access Foo; | |
8309 | V: FooP; | |
8310 | type Foo is array ...; | |
4c4b4cd2 | 8311 | ). In these cases, since there is no mechanism for producing |
14f9c5c9 AS |
8312 | cross-references to such types, we instead substitute for FooP a |
8313 | stub enumeration type that is nowhere resolved, and whose tag is | |
4c4b4cd2 | 8314 | the name of the actual type. Call these types "non-record stubs". */ |
14f9c5c9 AS |
8315 | |
8316 | /* A type equivalent to TYPE that is not a non-record stub, if one | |
4c4b4cd2 PH |
8317 | exists, otherwise TYPE. */ |
8318 | ||
d2e4a39e | 8319 | struct type * |
61ee279c | 8320 | ada_check_typedef (struct type *type) |
14f9c5c9 | 8321 | { |
727e3d2e JB |
8322 | if (type == NULL) |
8323 | return NULL; | |
8324 | ||
720d1a40 JB |
8325 | /* If our type is a typedef type of a fat pointer, then we're done. |
8326 | We don't want to strip the TYPE_CODE_TYPDEF layer, because this is | |
8327 | what allows us to distinguish between fat pointers that represent | |
8328 | array types, and fat pointers that represent array access types | |
8329 | (in both cases, the compiler implements them as fat pointers). */ | |
8330 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF | |
8331 | && is_thick_pntr (ada_typedef_target_type (type))) | |
8332 | return type; | |
8333 | ||
14f9c5c9 AS |
8334 | CHECK_TYPEDEF (type); |
8335 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_ENUM | |
529cad9c | 8336 | || !TYPE_STUB (type) |
14f9c5c9 AS |
8337 | || TYPE_TAG_NAME (type) == NULL) |
8338 | return type; | |
d2e4a39e | 8339 | else |
14f9c5c9 | 8340 | { |
0d5cff50 | 8341 | const char *name = TYPE_TAG_NAME (type); |
d2e4a39e | 8342 | struct type *type1 = ada_find_any_type (name); |
5b4ee69b | 8343 | |
05e522ef JB |
8344 | if (type1 == NULL) |
8345 | return type; | |
8346 | ||
8347 | /* TYPE1 might itself be a TYPE_CODE_TYPEDEF (this can happen with | |
8348 | stubs pointing to arrays, as we don't create symbols for array | |
3a867c22 JB |
8349 | types, only for the typedef-to-array types). If that's the case, |
8350 | strip the typedef layer. */ | |
8351 | if (TYPE_CODE (type1) == TYPE_CODE_TYPEDEF) | |
8352 | type1 = ada_check_typedef (type1); | |
8353 | ||
8354 | return type1; | |
14f9c5c9 AS |
8355 | } |
8356 | } | |
8357 | ||
8358 | /* A value representing the data at VALADDR/ADDRESS as described by | |
8359 | type TYPE0, but with a standard (static-sized) type that correctly | |
8360 | describes it. If VAL0 is not NULL and TYPE0 already is a standard | |
8361 | type, then return VAL0 [this feature is simply to avoid redundant | |
4c4b4cd2 | 8362 | creation of struct values]. */ |
14f9c5c9 | 8363 | |
4c4b4cd2 PH |
8364 | static struct value * |
8365 | ada_to_fixed_value_create (struct type *type0, CORE_ADDR address, | |
8366 | struct value *val0) | |
14f9c5c9 | 8367 | { |
1ed6ede0 | 8368 | struct type *type = ada_to_fixed_type (type0, 0, address, NULL, 1); |
5b4ee69b | 8369 | |
14f9c5c9 AS |
8370 | if (type == type0 && val0 != NULL) |
8371 | return val0; | |
d2e4a39e | 8372 | else |
4c4b4cd2 PH |
8373 | return value_from_contents_and_address (type, 0, address); |
8374 | } | |
8375 | ||
8376 | /* A value representing VAL, but with a standard (static-sized) type | |
8377 | that correctly describes it. Does not necessarily create a new | |
8378 | value. */ | |
8379 | ||
0c3acc09 | 8380 | struct value * |
4c4b4cd2 PH |
8381 | ada_to_fixed_value (struct value *val) |
8382 | { | |
c48db5ca JB |
8383 | val = unwrap_value (val); |
8384 | val = ada_to_fixed_value_create (value_type (val), | |
8385 | value_address (val), | |
8386 | val); | |
8387 | return val; | |
14f9c5c9 | 8388 | } |
d2e4a39e | 8389 | \f |
14f9c5c9 | 8390 | |
14f9c5c9 AS |
8391 | /* Attributes */ |
8392 | ||
4c4b4cd2 PH |
8393 | /* Table mapping attribute numbers to names. |
8394 | NOTE: Keep up to date with enum ada_attribute definition in ada-lang.h. */ | |
14f9c5c9 | 8395 | |
d2e4a39e | 8396 | static const char *attribute_names[] = { |
14f9c5c9 AS |
8397 | "<?>", |
8398 | ||
d2e4a39e | 8399 | "first", |
14f9c5c9 AS |
8400 | "last", |
8401 | "length", | |
8402 | "image", | |
14f9c5c9 AS |
8403 | "max", |
8404 | "min", | |
4c4b4cd2 PH |
8405 | "modulus", |
8406 | "pos", | |
8407 | "size", | |
8408 | "tag", | |
14f9c5c9 | 8409 | "val", |
14f9c5c9 AS |
8410 | 0 |
8411 | }; | |
8412 | ||
d2e4a39e | 8413 | const char * |
4c4b4cd2 | 8414 | ada_attribute_name (enum exp_opcode n) |
14f9c5c9 | 8415 | { |
4c4b4cd2 PH |
8416 | if (n >= OP_ATR_FIRST && n <= (int) OP_ATR_VAL) |
8417 | return attribute_names[n - OP_ATR_FIRST + 1]; | |
14f9c5c9 AS |
8418 | else |
8419 | return attribute_names[0]; | |
8420 | } | |
8421 | ||
4c4b4cd2 | 8422 | /* Evaluate the 'POS attribute applied to ARG. */ |
14f9c5c9 | 8423 | |
4c4b4cd2 PH |
8424 | static LONGEST |
8425 | pos_atr (struct value *arg) | |
14f9c5c9 | 8426 | { |
24209737 PH |
8427 | struct value *val = coerce_ref (arg); |
8428 | struct type *type = value_type (val); | |
14f9c5c9 | 8429 | |
d2e4a39e | 8430 | if (!discrete_type_p (type)) |
323e0a4a | 8431 | error (_("'POS only defined on discrete types")); |
14f9c5c9 AS |
8432 | |
8433 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) | |
8434 | { | |
8435 | int i; | |
24209737 | 8436 | LONGEST v = value_as_long (val); |
14f9c5c9 | 8437 | |
d2e4a39e | 8438 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) |
4c4b4cd2 | 8439 | { |
14e75d8e | 8440 | if (v == TYPE_FIELD_ENUMVAL (type, i)) |
4c4b4cd2 PH |
8441 | return i; |
8442 | } | |
323e0a4a | 8443 | error (_("enumeration value is invalid: can't find 'POS")); |
14f9c5c9 AS |
8444 | } |
8445 | else | |
24209737 | 8446 | return value_as_long (val); |
4c4b4cd2 PH |
8447 | } |
8448 | ||
8449 | static struct value * | |
3cb382c9 | 8450 | value_pos_atr (struct type *type, struct value *arg) |
4c4b4cd2 | 8451 | { |
3cb382c9 | 8452 | return value_from_longest (type, pos_atr (arg)); |
14f9c5c9 AS |
8453 | } |
8454 | ||
4c4b4cd2 | 8455 | /* Evaluate the TYPE'VAL attribute applied to ARG. */ |
14f9c5c9 | 8456 | |
d2e4a39e AS |
8457 | static struct value * |
8458 | value_val_atr (struct type *type, struct value *arg) | |
14f9c5c9 | 8459 | { |
d2e4a39e | 8460 | if (!discrete_type_p (type)) |
323e0a4a | 8461 | error (_("'VAL only defined on discrete types")); |
df407dfe | 8462 | if (!integer_type_p (value_type (arg))) |
323e0a4a | 8463 | error (_("'VAL requires integral argument")); |
14f9c5c9 AS |
8464 | |
8465 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) | |
8466 | { | |
8467 | long pos = value_as_long (arg); | |
5b4ee69b | 8468 | |
14f9c5c9 | 8469 | if (pos < 0 || pos >= TYPE_NFIELDS (type)) |
323e0a4a | 8470 | error (_("argument to 'VAL out of range")); |
14e75d8e | 8471 | return value_from_longest (type, TYPE_FIELD_ENUMVAL (type, pos)); |
14f9c5c9 AS |
8472 | } |
8473 | else | |
8474 | return value_from_longest (type, value_as_long (arg)); | |
8475 | } | |
14f9c5c9 | 8476 | \f |
d2e4a39e | 8477 | |
4c4b4cd2 | 8478 | /* Evaluation */ |
14f9c5c9 | 8479 | |
4c4b4cd2 PH |
8480 | /* True if TYPE appears to be an Ada character type. |
8481 | [At the moment, this is true only for Character and Wide_Character; | |
8482 | It is a heuristic test that could stand improvement]. */ | |
14f9c5c9 | 8483 | |
d2e4a39e AS |
8484 | int |
8485 | ada_is_character_type (struct type *type) | |
14f9c5c9 | 8486 | { |
7b9f71f2 JB |
8487 | const char *name; |
8488 | ||
8489 | /* If the type code says it's a character, then assume it really is, | |
8490 | and don't check any further. */ | |
8491 | if (TYPE_CODE (type) == TYPE_CODE_CHAR) | |
8492 | return 1; | |
8493 | ||
8494 | /* Otherwise, assume it's a character type iff it is a discrete type | |
8495 | with a known character type name. */ | |
8496 | name = ada_type_name (type); | |
8497 | return (name != NULL | |
8498 | && (TYPE_CODE (type) == TYPE_CODE_INT | |
8499 | || TYPE_CODE (type) == TYPE_CODE_RANGE) | |
8500 | && (strcmp (name, "character") == 0 | |
8501 | || strcmp (name, "wide_character") == 0 | |
5a517ebd | 8502 | || strcmp (name, "wide_wide_character") == 0 |
7b9f71f2 | 8503 | || strcmp (name, "unsigned char") == 0)); |
14f9c5c9 AS |
8504 | } |
8505 | ||
4c4b4cd2 | 8506 | /* True if TYPE appears to be an Ada string type. */ |
14f9c5c9 AS |
8507 | |
8508 | int | |
ebf56fd3 | 8509 | ada_is_string_type (struct type *type) |
14f9c5c9 | 8510 | { |
61ee279c | 8511 | type = ada_check_typedef (type); |
d2e4a39e | 8512 | if (type != NULL |
14f9c5c9 | 8513 | && TYPE_CODE (type) != TYPE_CODE_PTR |
76a01679 JB |
8514 | && (ada_is_simple_array_type (type) |
8515 | || ada_is_array_descriptor_type (type)) | |
14f9c5c9 AS |
8516 | && ada_array_arity (type) == 1) |
8517 | { | |
8518 | struct type *elttype = ada_array_element_type (type, 1); | |
8519 | ||
8520 | return ada_is_character_type (elttype); | |
8521 | } | |
d2e4a39e | 8522 | else |
14f9c5c9 AS |
8523 | return 0; |
8524 | } | |
8525 | ||
5bf03f13 JB |
8526 | /* The compiler sometimes provides a parallel XVS type for a given |
8527 | PAD type. Normally, it is safe to follow the PAD type directly, | |
8528 | but older versions of the compiler have a bug that causes the offset | |
8529 | of its "F" field to be wrong. Following that field in that case | |
8530 | would lead to incorrect results, but this can be worked around | |
8531 | by ignoring the PAD type and using the associated XVS type instead. | |
8532 | ||
8533 | Set to True if the debugger should trust the contents of PAD types. | |
8534 | Otherwise, ignore the PAD type if there is a parallel XVS type. */ | |
8535 | static int trust_pad_over_xvs = 1; | |
14f9c5c9 AS |
8536 | |
8537 | /* True if TYPE is a struct type introduced by the compiler to force the | |
8538 | alignment of a value. Such types have a single field with a | |
4c4b4cd2 | 8539 | distinctive name. */ |
14f9c5c9 AS |
8540 | |
8541 | int | |
ebf56fd3 | 8542 | ada_is_aligner_type (struct type *type) |
14f9c5c9 | 8543 | { |
61ee279c | 8544 | type = ada_check_typedef (type); |
714e53ab | 8545 | |
5bf03f13 | 8546 | if (!trust_pad_over_xvs && ada_find_parallel_type (type, "___XVS") != NULL) |
714e53ab PH |
8547 | return 0; |
8548 | ||
14f9c5c9 | 8549 | return (TYPE_CODE (type) == TYPE_CODE_STRUCT |
4c4b4cd2 PH |
8550 | && TYPE_NFIELDS (type) == 1 |
8551 | && strcmp (TYPE_FIELD_NAME (type, 0), "F") == 0); | |
14f9c5c9 AS |
8552 | } |
8553 | ||
8554 | /* If there is an ___XVS-convention type parallel to SUBTYPE, return | |
4c4b4cd2 | 8555 | the parallel type. */ |
14f9c5c9 | 8556 | |
d2e4a39e AS |
8557 | struct type * |
8558 | ada_get_base_type (struct type *raw_type) | |
14f9c5c9 | 8559 | { |
d2e4a39e AS |
8560 | struct type *real_type_namer; |
8561 | struct type *raw_real_type; | |
14f9c5c9 AS |
8562 | |
8563 | if (raw_type == NULL || TYPE_CODE (raw_type) != TYPE_CODE_STRUCT) | |
8564 | return raw_type; | |
8565 | ||
284614f0 JB |
8566 | if (ada_is_aligner_type (raw_type)) |
8567 | /* The encoding specifies that we should always use the aligner type. | |
8568 | So, even if this aligner type has an associated XVS type, we should | |
8569 | simply ignore it. | |
8570 | ||
8571 | According to the compiler gurus, an XVS type parallel to an aligner | |
8572 | type may exist because of a stabs limitation. In stabs, aligner | |
8573 | types are empty because the field has a variable-sized type, and | |
8574 | thus cannot actually be used as an aligner type. As a result, | |
8575 | we need the associated parallel XVS type to decode the type. | |
8576 | Since the policy in the compiler is to not change the internal | |
8577 | representation based on the debugging info format, we sometimes | |
8578 | end up having a redundant XVS type parallel to the aligner type. */ | |
8579 | return raw_type; | |
8580 | ||
14f9c5c9 | 8581 | real_type_namer = ada_find_parallel_type (raw_type, "___XVS"); |
d2e4a39e | 8582 | if (real_type_namer == NULL |
14f9c5c9 AS |
8583 | || TYPE_CODE (real_type_namer) != TYPE_CODE_STRUCT |
8584 | || TYPE_NFIELDS (real_type_namer) != 1) | |
8585 | return raw_type; | |
8586 | ||
f80d3ff2 JB |
8587 | if (TYPE_CODE (TYPE_FIELD_TYPE (real_type_namer, 0)) != TYPE_CODE_REF) |
8588 | { | |
8589 | /* This is an older encoding form where the base type needs to be | |
8590 | looked up by name. We prefer the newer enconding because it is | |
8591 | more efficient. */ | |
8592 | raw_real_type = ada_find_any_type (TYPE_FIELD_NAME (real_type_namer, 0)); | |
8593 | if (raw_real_type == NULL) | |
8594 | return raw_type; | |
8595 | else | |
8596 | return raw_real_type; | |
8597 | } | |
8598 | ||
8599 | /* The field in our XVS type is a reference to the base type. */ | |
8600 | return TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (real_type_namer, 0)); | |
d2e4a39e | 8601 | } |
14f9c5c9 | 8602 | |
4c4b4cd2 | 8603 | /* The type of value designated by TYPE, with all aligners removed. */ |
14f9c5c9 | 8604 | |
d2e4a39e AS |
8605 | struct type * |
8606 | ada_aligned_type (struct type *type) | |
14f9c5c9 AS |
8607 | { |
8608 | if (ada_is_aligner_type (type)) | |
8609 | return ada_aligned_type (TYPE_FIELD_TYPE (type, 0)); | |
8610 | else | |
8611 | return ada_get_base_type (type); | |
8612 | } | |
8613 | ||
8614 | ||
8615 | /* The address of the aligned value in an object at address VALADDR | |
4c4b4cd2 | 8616 | having type TYPE. Assumes ada_is_aligner_type (TYPE). */ |
14f9c5c9 | 8617 | |
fc1a4b47 AC |
8618 | const gdb_byte * |
8619 | ada_aligned_value_addr (struct type *type, const gdb_byte *valaddr) | |
14f9c5c9 | 8620 | { |
d2e4a39e | 8621 | if (ada_is_aligner_type (type)) |
14f9c5c9 | 8622 | return ada_aligned_value_addr (TYPE_FIELD_TYPE (type, 0), |
4c4b4cd2 PH |
8623 | valaddr + |
8624 | TYPE_FIELD_BITPOS (type, | |
8625 | 0) / TARGET_CHAR_BIT); | |
14f9c5c9 AS |
8626 | else |
8627 | return valaddr; | |
8628 | } | |
8629 | ||
4c4b4cd2 PH |
8630 | |
8631 | ||
14f9c5c9 | 8632 | /* The printed representation of an enumeration literal with encoded |
4c4b4cd2 | 8633 | name NAME. The value is good to the next call of ada_enum_name. */ |
d2e4a39e AS |
8634 | const char * |
8635 | ada_enum_name (const char *name) | |
14f9c5c9 | 8636 | { |
4c4b4cd2 PH |
8637 | static char *result; |
8638 | static size_t result_len = 0; | |
d2e4a39e | 8639 | char *tmp; |
14f9c5c9 | 8640 | |
4c4b4cd2 PH |
8641 | /* First, unqualify the enumeration name: |
8642 | 1. Search for the last '.' character. If we find one, then skip | |
177b42fe | 8643 | all the preceding characters, the unqualified name starts |
76a01679 | 8644 | right after that dot. |
4c4b4cd2 | 8645 | 2. Otherwise, we may be debugging on a target where the compiler |
76a01679 JB |
8646 | translates dots into "__". Search forward for double underscores, |
8647 | but stop searching when we hit an overloading suffix, which is | |
8648 | of the form "__" followed by digits. */ | |
4c4b4cd2 | 8649 | |
c3e5cd34 PH |
8650 | tmp = strrchr (name, '.'); |
8651 | if (tmp != NULL) | |
4c4b4cd2 PH |
8652 | name = tmp + 1; |
8653 | else | |
14f9c5c9 | 8654 | { |
4c4b4cd2 PH |
8655 | while ((tmp = strstr (name, "__")) != NULL) |
8656 | { | |
8657 | if (isdigit (tmp[2])) | |
8658 | break; | |
8659 | else | |
8660 | name = tmp + 2; | |
8661 | } | |
14f9c5c9 AS |
8662 | } |
8663 | ||
8664 | if (name[0] == 'Q') | |
8665 | { | |
14f9c5c9 | 8666 | int v; |
5b4ee69b | 8667 | |
14f9c5c9 | 8668 | if (name[1] == 'U' || name[1] == 'W') |
4c4b4cd2 PH |
8669 | { |
8670 | if (sscanf (name + 2, "%x", &v) != 1) | |
8671 | return name; | |
8672 | } | |
14f9c5c9 | 8673 | else |
4c4b4cd2 | 8674 | return name; |
14f9c5c9 | 8675 | |
4c4b4cd2 | 8676 | GROW_VECT (result, result_len, 16); |
14f9c5c9 | 8677 | if (isascii (v) && isprint (v)) |
88c15c34 | 8678 | xsnprintf (result, result_len, "'%c'", v); |
14f9c5c9 | 8679 | else if (name[1] == 'U') |
88c15c34 | 8680 | xsnprintf (result, result_len, "[\"%02x\"]", v); |
14f9c5c9 | 8681 | else |
88c15c34 | 8682 | xsnprintf (result, result_len, "[\"%04x\"]", v); |
14f9c5c9 AS |
8683 | |
8684 | return result; | |
8685 | } | |
d2e4a39e | 8686 | else |
4c4b4cd2 | 8687 | { |
c3e5cd34 PH |
8688 | tmp = strstr (name, "__"); |
8689 | if (tmp == NULL) | |
8690 | tmp = strstr (name, "$"); | |
8691 | if (tmp != NULL) | |
4c4b4cd2 PH |
8692 | { |
8693 | GROW_VECT (result, result_len, tmp - name + 1); | |
8694 | strncpy (result, name, tmp - name); | |
8695 | result[tmp - name] = '\0'; | |
8696 | return result; | |
8697 | } | |
8698 | ||
8699 | return name; | |
8700 | } | |
14f9c5c9 AS |
8701 | } |
8702 | ||
14f9c5c9 AS |
8703 | /* Evaluate the subexpression of EXP starting at *POS as for |
8704 | evaluate_type, updating *POS to point just past the evaluated | |
4c4b4cd2 | 8705 | expression. */ |
14f9c5c9 | 8706 | |
d2e4a39e AS |
8707 | static struct value * |
8708 | evaluate_subexp_type (struct expression *exp, int *pos) | |
14f9c5c9 | 8709 | { |
4b27a620 | 8710 | return evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); |
14f9c5c9 AS |
8711 | } |
8712 | ||
8713 | /* If VAL is wrapped in an aligner or subtype wrapper, return the | |
4c4b4cd2 | 8714 | value it wraps. */ |
14f9c5c9 | 8715 | |
d2e4a39e AS |
8716 | static struct value * |
8717 | unwrap_value (struct value *val) | |
14f9c5c9 | 8718 | { |
df407dfe | 8719 | struct type *type = ada_check_typedef (value_type (val)); |
5b4ee69b | 8720 | |
14f9c5c9 AS |
8721 | if (ada_is_aligner_type (type)) |
8722 | { | |
de4d072f | 8723 | struct value *v = ada_value_struct_elt (val, "F", 0); |
df407dfe | 8724 | struct type *val_type = ada_check_typedef (value_type (v)); |
5b4ee69b | 8725 | |
14f9c5c9 | 8726 | if (ada_type_name (val_type) == NULL) |
4c4b4cd2 | 8727 | TYPE_NAME (val_type) = ada_type_name (type); |
14f9c5c9 AS |
8728 | |
8729 | return unwrap_value (v); | |
8730 | } | |
d2e4a39e | 8731 | else |
14f9c5c9 | 8732 | { |
d2e4a39e | 8733 | struct type *raw_real_type = |
61ee279c | 8734 | ada_check_typedef (ada_get_base_type (type)); |
d2e4a39e | 8735 | |
5bf03f13 JB |
8736 | /* If there is no parallel XVS or XVE type, then the value is |
8737 | already unwrapped. Return it without further modification. */ | |
8738 | if ((type == raw_real_type) | |
8739 | && ada_find_parallel_type (type, "___XVE") == NULL) | |
8740 | return val; | |
14f9c5c9 | 8741 | |
d2e4a39e | 8742 | return |
4c4b4cd2 PH |
8743 | coerce_unspec_val_to_type |
8744 | (val, ada_to_fixed_type (raw_real_type, 0, | |
42ae5230 | 8745 | value_address (val), |
1ed6ede0 | 8746 | NULL, 1)); |
14f9c5c9 AS |
8747 | } |
8748 | } | |
d2e4a39e AS |
8749 | |
8750 | static struct value * | |
8751 | cast_to_fixed (struct type *type, struct value *arg) | |
14f9c5c9 AS |
8752 | { |
8753 | LONGEST val; | |
8754 | ||
df407dfe | 8755 | if (type == value_type (arg)) |
14f9c5c9 | 8756 | return arg; |
df407dfe | 8757 | else if (ada_is_fixed_point_type (value_type (arg))) |
d2e4a39e | 8758 | val = ada_float_to_fixed (type, |
df407dfe | 8759 | ada_fixed_to_float (value_type (arg), |
4c4b4cd2 | 8760 | value_as_long (arg))); |
d2e4a39e | 8761 | else |
14f9c5c9 | 8762 | { |
a53b7a21 | 8763 | DOUBLEST argd = value_as_double (arg); |
5b4ee69b | 8764 | |
14f9c5c9 AS |
8765 | val = ada_float_to_fixed (type, argd); |
8766 | } | |
8767 | ||
8768 | return value_from_longest (type, val); | |
8769 | } | |
8770 | ||
d2e4a39e | 8771 | static struct value * |
a53b7a21 | 8772 | cast_from_fixed (struct type *type, struct value *arg) |
14f9c5c9 | 8773 | { |
df407dfe | 8774 | DOUBLEST val = ada_fixed_to_float (value_type (arg), |
4c4b4cd2 | 8775 | value_as_long (arg)); |
5b4ee69b | 8776 | |
a53b7a21 | 8777 | return value_from_double (type, val); |
14f9c5c9 AS |
8778 | } |
8779 | ||
d99dcf51 JB |
8780 | /* Given two array types T1 and T2, return nonzero iff both arrays |
8781 | contain the same number of elements. */ | |
8782 | ||
8783 | static int | |
8784 | ada_same_array_size_p (struct type *t1, struct type *t2) | |
8785 | { | |
8786 | LONGEST lo1, hi1, lo2, hi2; | |
8787 | ||
8788 | /* Get the array bounds in order to verify that the size of | |
8789 | the two arrays match. */ | |
8790 | if (!get_array_bounds (t1, &lo1, &hi1) | |
8791 | || !get_array_bounds (t2, &lo2, &hi2)) | |
8792 | error (_("unable to determine array bounds")); | |
8793 | ||
8794 | /* To make things easier for size comparison, normalize a bit | |
8795 | the case of empty arrays by making sure that the difference | |
8796 | between upper bound and lower bound is always -1. */ | |
8797 | if (lo1 > hi1) | |
8798 | hi1 = lo1 - 1; | |
8799 | if (lo2 > hi2) | |
8800 | hi2 = lo2 - 1; | |
8801 | ||
8802 | return (hi1 - lo1 == hi2 - lo2); | |
8803 | } | |
8804 | ||
8805 | /* Assuming that VAL is an array of integrals, and TYPE represents | |
8806 | an array with the same number of elements, but with wider integral | |
8807 | elements, return an array "casted" to TYPE. In practice, this | |
8808 | means that the returned array is built by casting each element | |
8809 | of the original array into TYPE's (wider) element type. */ | |
8810 | ||
8811 | static struct value * | |
8812 | ada_promote_array_of_integrals (struct type *type, struct value *val) | |
8813 | { | |
8814 | struct type *elt_type = TYPE_TARGET_TYPE (type); | |
8815 | LONGEST lo, hi; | |
8816 | struct value *res; | |
8817 | LONGEST i; | |
8818 | ||
8819 | /* Verify that both val and type are arrays of scalars, and | |
8820 | that the size of val's elements is smaller than the size | |
8821 | of type's element. */ | |
8822 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_ARRAY); | |
8823 | gdb_assert (is_integral_type (TYPE_TARGET_TYPE (type))); | |
8824 | gdb_assert (TYPE_CODE (value_type (val)) == TYPE_CODE_ARRAY); | |
8825 | gdb_assert (is_integral_type (TYPE_TARGET_TYPE (value_type (val)))); | |
8826 | gdb_assert (TYPE_LENGTH (TYPE_TARGET_TYPE (type)) | |
8827 | > TYPE_LENGTH (TYPE_TARGET_TYPE (value_type (val)))); | |
8828 | ||
8829 | if (!get_array_bounds (type, &lo, &hi)) | |
8830 | error (_("unable to determine array bounds")); | |
8831 | ||
8832 | res = allocate_value (type); | |
8833 | ||
8834 | /* Promote each array element. */ | |
8835 | for (i = 0; i < hi - lo + 1; i++) | |
8836 | { | |
8837 | struct value *elt = value_cast (elt_type, value_subscript (val, lo + i)); | |
8838 | ||
8839 | memcpy (value_contents_writeable (res) + (i * TYPE_LENGTH (elt_type)), | |
8840 | value_contents_all (elt), TYPE_LENGTH (elt_type)); | |
8841 | } | |
8842 | ||
8843 | return res; | |
8844 | } | |
8845 | ||
4c4b4cd2 PH |
8846 | /* Coerce VAL as necessary for assignment to an lval of type TYPE, and |
8847 | return the converted value. */ | |
8848 | ||
d2e4a39e AS |
8849 | static struct value * |
8850 | coerce_for_assign (struct type *type, struct value *val) | |
14f9c5c9 | 8851 | { |
df407dfe | 8852 | struct type *type2 = value_type (val); |
5b4ee69b | 8853 | |
14f9c5c9 AS |
8854 | if (type == type2) |
8855 | return val; | |
8856 | ||
61ee279c PH |
8857 | type2 = ada_check_typedef (type2); |
8858 | type = ada_check_typedef (type); | |
14f9c5c9 | 8859 | |
d2e4a39e AS |
8860 | if (TYPE_CODE (type2) == TYPE_CODE_PTR |
8861 | && TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
14f9c5c9 AS |
8862 | { |
8863 | val = ada_value_ind (val); | |
df407dfe | 8864 | type2 = value_type (val); |
14f9c5c9 AS |
8865 | } |
8866 | ||
d2e4a39e | 8867 | if (TYPE_CODE (type2) == TYPE_CODE_ARRAY |
14f9c5c9 AS |
8868 | && TYPE_CODE (type) == TYPE_CODE_ARRAY) |
8869 | { | |
d99dcf51 JB |
8870 | if (!ada_same_array_size_p (type, type2)) |
8871 | error (_("cannot assign arrays of different length")); | |
8872 | ||
8873 | if (is_integral_type (TYPE_TARGET_TYPE (type)) | |
8874 | && is_integral_type (TYPE_TARGET_TYPE (type2)) | |
8875 | && TYPE_LENGTH (TYPE_TARGET_TYPE (type2)) | |
8876 | < TYPE_LENGTH (TYPE_TARGET_TYPE (type))) | |
8877 | { | |
8878 | /* Allow implicit promotion of the array elements to | |
8879 | a wider type. */ | |
8880 | return ada_promote_array_of_integrals (type, val); | |
8881 | } | |
8882 | ||
8883 | if (TYPE_LENGTH (TYPE_TARGET_TYPE (type2)) | |
8884 | != TYPE_LENGTH (TYPE_TARGET_TYPE (type))) | |
323e0a4a | 8885 | error (_("Incompatible types in assignment")); |
04624583 | 8886 | deprecated_set_value_type (val, type); |
14f9c5c9 | 8887 | } |
d2e4a39e | 8888 | return val; |
14f9c5c9 AS |
8889 | } |
8890 | ||
4c4b4cd2 PH |
8891 | static struct value * |
8892 | ada_value_binop (struct value *arg1, struct value *arg2, enum exp_opcode op) | |
8893 | { | |
8894 | struct value *val; | |
8895 | struct type *type1, *type2; | |
8896 | LONGEST v, v1, v2; | |
8897 | ||
994b9211 AC |
8898 | arg1 = coerce_ref (arg1); |
8899 | arg2 = coerce_ref (arg2); | |
18af8284 JB |
8900 | type1 = get_base_type (ada_check_typedef (value_type (arg1))); |
8901 | type2 = get_base_type (ada_check_typedef (value_type (arg2))); | |
4c4b4cd2 | 8902 | |
76a01679 JB |
8903 | if (TYPE_CODE (type1) != TYPE_CODE_INT |
8904 | || TYPE_CODE (type2) != TYPE_CODE_INT) | |
4c4b4cd2 PH |
8905 | return value_binop (arg1, arg2, op); |
8906 | ||
76a01679 | 8907 | switch (op) |
4c4b4cd2 PH |
8908 | { |
8909 | case BINOP_MOD: | |
8910 | case BINOP_DIV: | |
8911 | case BINOP_REM: | |
8912 | break; | |
8913 | default: | |
8914 | return value_binop (arg1, arg2, op); | |
8915 | } | |
8916 | ||
8917 | v2 = value_as_long (arg2); | |
8918 | if (v2 == 0) | |
323e0a4a | 8919 | error (_("second operand of %s must not be zero."), op_string (op)); |
4c4b4cd2 PH |
8920 | |
8921 | if (TYPE_UNSIGNED (type1) || op == BINOP_MOD) | |
8922 | return value_binop (arg1, arg2, op); | |
8923 | ||
8924 | v1 = value_as_long (arg1); | |
8925 | switch (op) | |
8926 | { | |
8927 | case BINOP_DIV: | |
8928 | v = v1 / v2; | |
76a01679 JB |
8929 | if (!TRUNCATION_TOWARDS_ZERO && v1 * (v1 % v2) < 0) |
8930 | v += v > 0 ? -1 : 1; | |
4c4b4cd2 PH |
8931 | break; |
8932 | case BINOP_REM: | |
8933 | v = v1 % v2; | |
76a01679 JB |
8934 | if (v * v1 < 0) |
8935 | v -= v2; | |
4c4b4cd2 PH |
8936 | break; |
8937 | default: | |
8938 | /* Should not reach this point. */ | |
8939 | v = 0; | |
8940 | } | |
8941 | ||
8942 | val = allocate_value (type1); | |
990a07ab | 8943 | store_unsigned_integer (value_contents_raw (val), |
e17a4113 UW |
8944 | TYPE_LENGTH (value_type (val)), |
8945 | gdbarch_byte_order (get_type_arch (type1)), v); | |
4c4b4cd2 PH |
8946 | return val; |
8947 | } | |
8948 | ||
8949 | static int | |
8950 | ada_value_equal (struct value *arg1, struct value *arg2) | |
8951 | { | |
df407dfe AC |
8952 | if (ada_is_direct_array_type (value_type (arg1)) |
8953 | || ada_is_direct_array_type (value_type (arg2))) | |
4c4b4cd2 | 8954 | { |
f58b38bf JB |
8955 | /* Automatically dereference any array reference before |
8956 | we attempt to perform the comparison. */ | |
8957 | arg1 = ada_coerce_ref (arg1); | |
8958 | arg2 = ada_coerce_ref (arg2); | |
8959 | ||
4c4b4cd2 PH |
8960 | arg1 = ada_coerce_to_simple_array (arg1); |
8961 | arg2 = ada_coerce_to_simple_array (arg2); | |
df407dfe AC |
8962 | if (TYPE_CODE (value_type (arg1)) != TYPE_CODE_ARRAY |
8963 | || TYPE_CODE (value_type (arg2)) != TYPE_CODE_ARRAY) | |
323e0a4a | 8964 | error (_("Attempt to compare array with non-array")); |
4c4b4cd2 | 8965 | /* FIXME: The following works only for types whose |
76a01679 JB |
8966 | representations use all bits (no padding or undefined bits) |
8967 | and do not have user-defined equality. */ | |
8968 | return | |
df407dfe | 8969 | TYPE_LENGTH (value_type (arg1)) == TYPE_LENGTH (value_type (arg2)) |
0fd88904 | 8970 | && memcmp (value_contents (arg1), value_contents (arg2), |
df407dfe | 8971 | TYPE_LENGTH (value_type (arg1))) == 0; |
4c4b4cd2 PH |
8972 | } |
8973 | return value_equal (arg1, arg2); | |
8974 | } | |
8975 | ||
52ce6436 PH |
8976 | /* Total number of component associations in the aggregate starting at |
8977 | index PC in EXP. Assumes that index PC is the start of an | |
0963b4bd | 8978 | OP_AGGREGATE. */ |
52ce6436 PH |
8979 | |
8980 | static int | |
8981 | num_component_specs (struct expression *exp, int pc) | |
8982 | { | |
8983 | int n, m, i; | |
5b4ee69b | 8984 | |
52ce6436 PH |
8985 | m = exp->elts[pc + 1].longconst; |
8986 | pc += 3; | |
8987 | n = 0; | |
8988 | for (i = 0; i < m; i += 1) | |
8989 | { | |
8990 | switch (exp->elts[pc].opcode) | |
8991 | { | |
8992 | default: | |
8993 | n += 1; | |
8994 | break; | |
8995 | case OP_CHOICES: | |
8996 | n += exp->elts[pc + 1].longconst; | |
8997 | break; | |
8998 | } | |
8999 | ada_evaluate_subexp (NULL, exp, &pc, EVAL_SKIP); | |
9000 | } | |
9001 | return n; | |
9002 | } | |
9003 | ||
9004 | /* Assign the result of evaluating EXP starting at *POS to the INDEXth | |
9005 | component of LHS (a simple array or a record), updating *POS past | |
9006 | the expression, assuming that LHS is contained in CONTAINER. Does | |
9007 | not modify the inferior's memory, nor does it modify LHS (unless | |
9008 | LHS == CONTAINER). */ | |
9009 | ||
9010 | static void | |
9011 | assign_component (struct value *container, struct value *lhs, LONGEST index, | |
9012 | struct expression *exp, int *pos) | |
9013 | { | |
9014 | struct value *mark = value_mark (); | |
9015 | struct value *elt; | |
5b4ee69b | 9016 | |
52ce6436 PH |
9017 | if (TYPE_CODE (value_type (lhs)) == TYPE_CODE_ARRAY) |
9018 | { | |
22601c15 UW |
9019 | struct type *index_type = builtin_type (exp->gdbarch)->builtin_int; |
9020 | struct value *index_val = value_from_longest (index_type, index); | |
5b4ee69b | 9021 | |
52ce6436 PH |
9022 | elt = unwrap_value (ada_value_subscript (lhs, 1, &index_val)); |
9023 | } | |
9024 | else | |
9025 | { | |
9026 | elt = ada_index_struct_field (index, lhs, 0, value_type (lhs)); | |
c48db5ca | 9027 | elt = ada_to_fixed_value (elt); |
52ce6436 PH |
9028 | } |
9029 | ||
9030 | if (exp->elts[*pos].opcode == OP_AGGREGATE) | |
9031 | assign_aggregate (container, elt, exp, pos, EVAL_NORMAL); | |
9032 | else | |
9033 | value_assign_to_component (container, elt, | |
9034 | ada_evaluate_subexp (NULL, exp, pos, | |
9035 | EVAL_NORMAL)); | |
9036 | ||
9037 | value_free_to_mark (mark); | |
9038 | } | |
9039 | ||
9040 | /* Assuming that LHS represents an lvalue having a record or array | |
9041 | type, and EXP->ELTS[*POS] is an OP_AGGREGATE, evaluate an assignment | |
9042 | of that aggregate's value to LHS, advancing *POS past the | |
9043 | aggregate. NOSIDE is as for evaluate_subexp. CONTAINER is an | |
9044 | lvalue containing LHS (possibly LHS itself). Does not modify | |
9045 | the inferior's memory, nor does it modify the contents of | |
0963b4bd | 9046 | LHS (unless == CONTAINER). Returns the modified CONTAINER. */ |
52ce6436 PH |
9047 | |
9048 | static struct value * | |
9049 | assign_aggregate (struct value *container, | |
9050 | struct value *lhs, struct expression *exp, | |
9051 | int *pos, enum noside noside) | |
9052 | { | |
9053 | struct type *lhs_type; | |
9054 | int n = exp->elts[*pos+1].longconst; | |
9055 | LONGEST low_index, high_index; | |
9056 | int num_specs; | |
9057 | LONGEST *indices; | |
9058 | int max_indices, num_indices; | |
52ce6436 | 9059 | int i; |
52ce6436 PH |
9060 | |
9061 | *pos += 3; | |
9062 | if (noside != EVAL_NORMAL) | |
9063 | { | |
52ce6436 PH |
9064 | for (i = 0; i < n; i += 1) |
9065 | ada_evaluate_subexp (NULL, exp, pos, noside); | |
9066 | return container; | |
9067 | } | |
9068 | ||
9069 | container = ada_coerce_ref (container); | |
9070 | if (ada_is_direct_array_type (value_type (container))) | |
9071 | container = ada_coerce_to_simple_array (container); | |
9072 | lhs = ada_coerce_ref (lhs); | |
9073 | if (!deprecated_value_modifiable (lhs)) | |
9074 | error (_("Left operand of assignment is not a modifiable lvalue.")); | |
9075 | ||
9076 | lhs_type = value_type (lhs); | |
9077 | if (ada_is_direct_array_type (lhs_type)) | |
9078 | { | |
9079 | lhs = ada_coerce_to_simple_array (lhs); | |
9080 | lhs_type = value_type (lhs); | |
9081 | low_index = TYPE_ARRAY_LOWER_BOUND_VALUE (lhs_type); | |
9082 | high_index = TYPE_ARRAY_UPPER_BOUND_VALUE (lhs_type); | |
52ce6436 PH |
9083 | } |
9084 | else if (TYPE_CODE (lhs_type) == TYPE_CODE_STRUCT) | |
9085 | { | |
9086 | low_index = 0; | |
9087 | high_index = num_visible_fields (lhs_type) - 1; | |
52ce6436 PH |
9088 | } |
9089 | else | |
9090 | error (_("Left-hand side must be array or record.")); | |
9091 | ||
9092 | num_specs = num_component_specs (exp, *pos - 3); | |
9093 | max_indices = 4 * num_specs + 4; | |
9094 | indices = alloca (max_indices * sizeof (indices[0])); | |
9095 | indices[0] = indices[1] = low_index - 1; | |
9096 | indices[2] = indices[3] = high_index + 1; | |
9097 | num_indices = 4; | |
9098 | ||
9099 | for (i = 0; i < n; i += 1) | |
9100 | { | |
9101 | switch (exp->elts[*pos].opcode) | |
9102 | { | |
1fbf5ada JB |
9103 | case OP_CHOICES: |
9104 | aggregate_assign_from_choices (container, lhs, exp, pos, indices, | |
9105 | &num_indices, max_indices, | |
9106 | low_index, high_index); | |
9107 | break; | |
9108 | case OP_POSITIONAL: | |
9109 | aggregate_assign_positional (container, lhs, exp, pos, indices, | |
52ce6436 PH |
9110 | &num_indices, max_indices, |
9111 | low_index, high_index); | |
1fbf5ada JB |
9112 | break; |
9113 | case OP_OTHERS: | |
9114 | if (i != n-1) | |
9115 | error (_("Misplaced 'others' clause")); | |
9116 | aggregate_assign_others (container, lhs, exp, pos, indices, | |
9117 | num_indices, low_index, high_index); | |
9118 | break; | |
9119 | default: | |
9120 | error (_("Internal error: bad aggregate clause")); | |
52ce6436 PH |
9121 | } |
9122 | } | |
9123 | ||
9124 | return container; | |
9125 | } | |
9126 | ||
9127 | /* Assign into the component of LHS indexed by the OP_POSITIONAL | |
9128 | construct at *POS, updating *POS past the construct, given that | |
9129 | the positions are relative to lower bound LOW, where HIGH is the | |
9130 | upper bound. Record the position in INDICES[0 .. MAX_INDICES-1] | |
9131 | updating *NUM_INDICES as needed. CONTAINER is as for | |
0963b4bd | 9132 | assign_aggregate. */ |
52ce6436 PH |
9133 | static void |
9134 | aggregate_assign_positional (struct value *container, | |
9135 | struct value *lhs, struct expression *exp, | |
9136 | int *pos, LONGEST *indices, int *num_indices, | |
9137 | int max_indices, LONGEST low, LONGEST high) | |
9138 | { | |
9139 | LONGEST ind = longest_to_int (exp->elts[*pos + 1].longconst) + low; | |
9140 | ||
9141 | if (ind - 1 == high) | |
e1d5a0d2 | 9142 | warning (_("Extra components in aggregate ignored.")); |
52ce6436 PH |
9143 | if (ind <= high) |
9144 | { | |
9145 | add_component_interval (ind, ind, indices, num_indices, max_indices); | |
9146 | *pos += 3; | |
9147 | assign_component (container, lhs, ind, exp, pos); | |
9148 | } | |
9149 | else | |
9150 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
9151 | } | |
9152 | ||
9153 | /* Assign into the components of LHS indexed by the OP_CHOICES | |
9154 | construct at *POS, updating *POS past the construct, given that | |
9155 | the allowable indices are LOW..HIGH. Record the indices assigned | |
9156 | to in INDICES[0 .. MAX_INDICES-1], updating *NUM_INDICES as | |
0963b4bd | 9157 | needed. CONTAINER is as for assign_aggregate. */ |
52ce6436 PH |
9158 | static void |
9159 | aggregate_assign_from_choices (struct value *container, | |
9160 | struct value *lhs, struct expression *exp, | |
9161 | int *pos, LONGEST *indices, int *num_indices, | |
9162 | int max_indices, LONGEST low, LONGEST high) | |
9163 | { | |
9164 | int j; | |
9165 | int n_choices = longest_to_int (exp->elts[*pos+1].longconst); | |
9166 | int choice_pos, expr_pc; | |
9167 | int is_array = ada_is_direct_array_type (value_type (lhs)); | |
9168 | ||
9169 | choice_pos = *pos += 3; | |
9170 | ||
9171 | for (j = 0; j < n_choices; j += 1) | |
9172 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
9173 | expr_pc = *pos; | |
9174 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
9175 | ||
9176 | for (j = 0; j < n_choices; j += 1) | |
9177 | { | |
9178 | LONGEST lower, upper; | |
9179 | enum exp_opcode op = exp->elts[choice_pos].opcode; | |
5b4ee69b | 9180 | |
52ce6436 PH |
9181 | if (op == OP_DISCRETE_RANGE) |
9182 | { | |
9183 | choice_pos += 1; | |
9184 | lower = value_as_long (ada_evaluate_subexp (NULL, exp, pos, | |
9185 | EVAL_NORMAL)); | |
9186 | upper = value_as_long (ada_evaluate_subexp (NULL, exp, pos, | |
9187 | EVAL_NORMAL)); | |
9188 | } | |
9189 | else if (is_array) | |
9190 | { | |
9191 | lower = value_as_long (ada_evaluate_subexp (NULL, exp, &choice_pos, | |
9192 | EVAL_NORMAL)); | |
9193 | upper = lower; | |
9194 | } | |
9195 | else | |
9196 | { | |
9197 | int ind; | |
0d5cff50 | 9198 | const char *name; |
5b4ee69b | 9199 | |
52ce6436 PH |
9200 | switch (op) |
9201 | { | |
9202 | case OP_NAME: | |
9203 | name = &exp->elts[choice_pos + 2].string; | |
9204 | break; | |
9205 | case OP_VAR_VALUE: | |
9206 | name = SYMBOL_NATURAL_NAME (exp->elts[choice_pos + 2].symbol); | |
9207 | break; | |
9208 | default: | |
9209 | error (_("Invalid record component association.")); | |
9210 | } | |
9211 | ada_evaluate_subexp (NULL, exp, &choice_pos, EVAL_SKIP); | |
9212 | ind = 0; | |
9213 | if (! find_struct_field (name, value_type (lhs), 0, | |
9214 | NULL, NULL, NULL, NULL, &ind)) | |
9215 | error (_("Unknown component name: %s."), name); | |
9216 | lower = upper = ind; | |
9217 | } | |
9218 | ||
9219 | if (lower <= upper && (lower < low || upper > high)) | |
9220 | error (_("Index in component association out of bounds.")); | |
9221 | ||
9222 | add_component_interval (lower, upper, indices, num_indices, | |
9223 | max_indices); | |
9224 | while (lower <= upper) | |
9225 | { | |
9226 | int pos1; | |
5b4ee69b | 9227 | |
52ce6436 PH |
9228 | pos1 = expr_pc; |
9229 | assign_component (container, lhs, lower, exp, &pos1); | |
9230 | lower += 1; | |
9231 | } | |
9232 | } | |
9233 | } | |
9234 | ||
9235 | /* Assign the value of the expression in the OP_OTHERS construct in | |
9236 | EXP at *POS into the components of LHS indexed from LOW .. HIGH that | |
9237 | have not been previously assigned. The index intervals already assigned | |
9238 | are in INDICES[0 .. NUM_INDICES-1]. Updates *POS to after the | |
0963b4bd | 9239 | OP_OTHERS clause. CONTAINER is as for assign_aggregate. */ |
52ce6436 PH |
9240 | static void |
9241 | aggregate_assign_others (struct value *container, | |
9242 | struct value *lhs, struct expression *exp, | |
9243 | int *pos, LONGEST *indices, int num_indices, | |
9244 | LONGEST low, LONGEST high) | |
9245 | { | |
9246 | int i; | |
5ce64950 | 9247 | int expr_pc = *pos + 1; |
52ce6436 PH |
9248 | |
9249 | for (i = 0; i < num_indices - 2; i += 2) | |
9250 | { | |
9251 | LONGEST ind; | |
5b4ee69b | 9252 | |
52ce6436 PH |
9253 | for (ind = indices[i + 1] + 1; ind < indices[i + 2]; ind += 1) |
9254 | { | |
5ce64950 | 9255 | int localpos; |
5b4ee69b | 9256 | |
5ce64950 MS |
9257 | localpos = expr_pc; |
9258 | assign_component (container, lhs, ind, exp, &localpos); | |
52ce6436 PH |
9259 | } |
9260 | } | |
9261 | ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP); | |
9262 | } | |
9263 | ||
9264 | /* Add the interval [LOW .. HIGH] to the sorted set of intervals | |
9265 | [ INDICES[0] .. INDICES[1] ],..., [ INDICES[*SIZE-2] .. INDICES[*SIZE-1] ], | |
9266 | modifying *SIZE as needed. It is an error if *SIZE exceeds | |
9267 | MAX_SIZE. The resulting intervals do not overlap. */ | |
9268 | static void | |
9269 | add_component_interval (LONGEST low, LONGEST high, | |
9270 | LONGEST* indices, int *size, int max_size) | |
9271 | { | |
9272 | int i, j; | |
5b4ee69b | 9273 | |
52ce6436 PH |
9274 | for (i = 0; i < *size; i += 2) { |
9275 | if (high >= indices[i] && low <= indices[i + 1]) | |
9276 | { | |
9277 | int kh; | |
5b4ee69b | 9278 | |
52ce6436 PH |
9279 | for (kh = i + 2; kh < *size; kh += 2) |
9280 | if (high < indices[kh]) | |
9281 | break; | |
9282 | if (low < indices[i]) | |
9283 | indices[i] = low; | |
9284 | indices[i + 1] = indices[kh - 1]; | |
9285 | if (high > indices[i + 1]) | |
9286 | indices[i + 1] = high; | |
9287 | memcpy (indices + i + 2, indices + kh, *size - kh); | |
9288 | *size -= kh - i - 2; | |
9289 | return; | |
9290 | } | |
9291 | else if (high < indices[i]) | |
9292 | break; | |
9293 | } | |
9294 | ||
9295 | if (*size == max_size) | |
9296 | error (_("Internal error: miscounted aggregate components.")); | |
9297 | *size += 2; | |
9298 | for (j = *size-1; j >= i+2; j -= 1) | |
9299 | indices[j] = indices[j - 2]; | |
9300 | indices[i] = low; | |
9301 | indices[i + 1] = high; | |
9302 | } | |
9303 | ||
6e48bd2c JB |
9304 | /* Perform and Ada cast of ARG2 to type TYPE if the type of ARG2 |
9305 | is different. */ | |
9306 | ||
9307 | static struct value * | |
9308 | ada_value_cast (struct type *type, struct value *arg2, enum noside noside) | |
9309 | { | |
9310 | if (type == ada_check_typedef (value_type (arg2))) | |
9311 | return arg2; | |
9312 | ||
9313 | if (ada_is_fixed_point_type (type)) | |
9314 | return (cast_to_fixed (type, arg2)); | |
9315 | ||
9316 | if (ada_is_fixed_point_type (value_type (arg2))) | |
a53b7a21 | 9317 | return cast_from_fixed (type, arg2); |
6e48bd2c JB |
9318 | |
9319 | return value_cast (type, arg2); | |
9320 | } | |
9321 | ||
284614f0 JB |
9322 | /* Evaluating Ada expressions, and printing their result. |
9323 | ------------------------------------------------------ | |
9324 | ||
21649b50 JB |
9325 | 1. Introduction: |
9326 | ---------------- | |
9327 | ||
284614f0 JB |
9328 | We usually evaluate an Ada expression in order to print its value. |
9329 | We also evaluate an expression in order to print its type, which | |
9330 | happens during the EVAL_AVOID_SIDE_EFFECTS phase of the evaluation, | |
9331 | but we'll focus mostly on the EVAL_NORMAL phase. In practice, the | |
9332 | EVAL_AVOID_SIDE_EFFECTS phase allows us to simplify certain aspects of | |
9333 | the evaluation compared to the EVAL_NORMAL, but is otherwise very | |
9334 | similar. | |
9335 | ||
9336 | Evaluating expressions is a little more complicated for Ada entities | |
9337 | than it is for entities in languages such as C. The main reason for | |
9338 | this is that Ada provides types whose definition might be dynamic. | |
9339 | One example of such types is variant records. Or another example | |
9340 | would be an array whose bounds can only be known at run time. | |
9341 | ||
9342 | The following description is a general guide as to what should be | |
9343 | done (and what should NOT be done) in order to evaluate an expression | |
9344 | involving such types, and when. This does not cover how the semantic | |
9345 | information is encoded by GNAT as this is covered separatly. For the | |
9346 | document used as the reference for the GNAT encoding, see exp_dbug.ads | |
9347 | in the GNAT sources. | |
9348 | ||
9349 | Ideally, we should embed each part of this description next to its | |
9350 | associated code. Unfortunately, the amount of code is so vast right | |
9351 | now that it's hard to see whether the code handling a particular | |
9352 | situation might be duplicated or not. One day, when the code is | |
9353 | cleaned up, this guide might become redundant with the comments | |
9354 | inserted in the code, and we might want to remove it. | |
9355 | ||
21649b50 JB |
9356 | 2. ``Fixing'' an Entity, the Simple Case: |
9357 | ----------------------------------------- | |
9358 | ||
284614f0 JB |
9359 | When evaluating Ada expressions, the tricky issue is that they may |
9360 | reference entities whose type contents and size are not statically | |
9361 | known. Consider for instance a variant record: | |
9362 | ||
9363 | type Rec (Empty : Boolean := True) is record | |
9364 | case Empty is | |
9365 | when True => null; | |
9366 | when False => Value : Integer; | |
9367 | end case; | |
9368 | end record; | |
9369 | Yes : Rec := (Empty => False, Value => 1); | |
9370 | No : Rec := (empty => True); | |
9371 | ||
9372 | The size and contents of that record depends on the value of the | |
9373 | descriminant (Rec.Empty). At this point, neither the debugging | |
9374 | information nor the associated type structure in GDB are able to | |
9375 | express such dynamic types. So what the debugger does is to create | |
9376 | "fixed" versions of the type that applies to the specific object. | |
9377 | We also informally refer to this opperation as "fixing" an object, | |
9378 | which means creating its associated fixed type. | |
9379 | ||
9380 | Example: when printing the value of variable "Yes" above, its fixed | |
9381 | type would look like this: | |
9382 | ||
9383 | type Rec is record | |
9384 | Empty : Boolean; | |
9385 | Value : Integer; | |
9386 | end record; | |
9387 | ||
9388 | On the other hand, if we printed the value of "No", its fixed type | |
9389 | would become: | |
9390 | ||
9391 | type Rec is record | |
9392 | Empty : Boolean; | |
9393 | end record; | |
9394 | ||
9395 | Things become a little more complicated when trying to fix an entity | |
9396 | with a dynamic type that directly contains another dynamic type, | |
9397 | such as an array of variant records, for instance. There are | |
9398 | two possible cases: Arrays, and records. | |
9399 | ||
21649b50 JB |
9400 | 3. ``Fixing'' Arrays: |
9401 | --------------------- | |
9402 | ||
9403 | The type structure in GDB describes an array in terms of its bounds, | |
9404 | and the type of its elements. By design, all elements in the array | |
9405 | have the same type and we cannot represent an array of variant elements | |
9406 | using the current type structure in GDB. When fixing an array, | |
9407 | we cannot fix the array element, as we would potentially need one | |
9408 | fixed type per element of the array. As a result, the best we can do | |
9409 | when fixing an array is to produce an array whose bounds and size | |
9410 | are correct (allowing us to read it from memory), but without having | |
9411 | touched its element type. Fixing each element will be done later, | |
9412 | when (if) necessary. | |
9413 | ||
9414 | Arrays are a little simpler to handle than records, because the same | |
9415 | amount of memory is allocated for each element of the array, even if | |
1b536f04 | 9416 | the amount of space actually used by each element differs from element |
21649b50 | 9417 | to element. Consider for instance the following array of type Rec: |
284614f0 JB |
9418 | |
9419 | type Rec_Array is array (1 .. 2) of Rec; | |
9420 | ||
1b536f04 JB |
9421 | The actual amount of memory occupied by each element might be different |
9422 | from element to element, depending on the value of their discriminant. | |
21649b50 | 9423 | But the amount of space reserved for each element in the array remains |
1b536f04 | 9424 | fixed regardless. So we simply need to compute that size using |
21649b50 JB |
9425 | the debugging information available, from which we can then determine |
9426 | the array size (we multiply the number of elements of the array by | |
9427 | the size of each element). | |
9428 | ||
9429 | The simplest case is when we have an array of a constrained element | |
9430 | type. For instance, consider the following type declarations: | |
9431 | ||
9432 | type Bounded_String (Max_Size : Integer) is | |
9433 | Length : Integer; | |
9434 | Buffer : String (1 .. Max_Size); | |
9435 | end record; | |
9436 | type Bounded_String_Array is array (1 ..2) of Bounded_String (80); | |
9437 | ||
9438 | In this case, the compiler describes the array as an array of | |
9439 | variable-size elements (identified by its XVS suffix) for which | |
9440 | the size can be read in the parallel XVZ variable. | |
9441 | ||
9442 | In the case of an array of an unconstrained element type, the compiler | |
9443 | wraps the array element inside a private PAD type. This type should not | |
9444 | be shown to the user, and must be "unwrap"'ed before printing. Note | |
284614f0 JB |
9445 | that we also use the adjective "aligner" in our code to designate |
9446 | these wrapper types. | |
9447 | ||
1b536f04 | 9448 | In some cases, the size allocated for each element is statically |
21649b50 JB |
9449 | known. In that case, the PAD type already has the correct size, |
9450 | and the array element should remain unfixed. | |
9451 | ||
9452 | But there are cases when this size is not statically known. | |
9453 | For instance, assuming that "Five" is an integer variable: | |
284614f0 JB |
9454 | |
9455 | type Dynamic is array (1 .. Five) of Integer; | |
9456 | type Wrapper (Has_Length : Boolean := False) is record | |
9457 | Data : Dynamic; | |
9458 | case Has_Length is | |
9459 | when True => Length : Integer; | |
9460 | when False => null; | |
9461 | end case; | |
9462 | end record; | |
9463 | type Wrapper_Array is array (1 .. 2) of Wrapper; | |
9464 | ||
9465 | Hello : Wrapper_Array := (others => (Has_Length => True, | |
9466 | Data => (others => 17), | |
9467 | Length => 1)); | |
9468 | ||
9469 | ||
9470 | The debugging info would describe variable Hello as being an | |
9471 | array of a PAD type. The size of that PAD type is not statically | |
9472 | known, but can be determined using a parallel XVZ variable. | |
9473 | In that case, a copy of the PAD type with the correct size should | |
9474 | be used for the fixed array. | |
9475 | ||
21649b50 JB |
9476 | 3. ``Fixing'' record type objects: |
9477 | ---------------------------------- | |
9478 | ||
9479 | Things are slightly different from arrays in the case of dynamic | |
284614f0 JB |
9480 | record types. In this case, in order to compute the associated |
9481 | fixed type, we need to determine the size and offset of each of | |
9482 | its components. This, in turn, requires us to compute the fixed | |
9483 | type of each of these components. | |
9484 | ||
9485 | Consider for instance the example: | |
9486 | ||
9487 | type Bounded_String (Max_Size : Natural) is record | |
9488 | Str : String (1 .. Max_Size); | |
9489 | Length : Natural; | |
9490 | end record; | |
9491 | My_String : Bounded_String (Max_Size => 10); | |
9492 | ||
9493 | In that case, the position of field "Length" depends on the size | |
9494 | of field Str, which itself depends on the value of the Max_Size | |
21649b50 | 9495 | discriminant. In order to fix the type of variable My_String, |
284614f0 JB |
9496 | we need to fix the type of field Str. Therefore, fixing a variant |
9497 | record requires us to fix each of its components. | |
9498 | ||
9499 | However, if a component does not have a dynamic size, the component | |
9500 | should not be fixed. In particular, fields that use a PAD type | |
9501 | should not fixed. Here is an example where this might happen | |
9502 | (assuming type Rec above): | |
9503 | ||
9504 | type Container (Big : Boolean) is record | |
9505 | First : Rec; | |
9506 | After : Integer; | |
9507 | case Big is | |
9508 | when True => Another : Integer; | |
9509 | when False => null; | |
9510 | end case; | |
9511 | end record; | |
9512 | My_Container : Container := (Big => False, | |
9513 | First => (Empty => True), | |
9514 | After => 42); | |
9515 | ||
9516 | In that example, the compiler creates a PAD type for component First, | |
9517 | whose size is constant, and then positions the component After just | |
9518 | right after it. The offset of component After is therefore constant | |
9519 | in this case. | |
9520 | ||
9521 | The debugger computes the position of each field based on an algorithm | |
9522 | that uses, among other things, the actual position and size of the field | |
21649b50 JB |
9523 | preceding it. Let's now imagine that the user is trying to print |
9524 | the value of My_Container. If the type fixing was recursive, we would | |
284614f0 JB |
9525 | end up computing the offset of field After based on the size of the |
9526 | fixed version of field First. And since in our example First has | |
9527 | only one actual field, the size of the fixed type is actually smaller | |
9528 | than the amount of space allocated to that field, and thus we would | |
9529 | compute the wrong offset of field After. | |
9530 | ||
21649b50 JB |
9531 | To make things more complicated, we need to watch out for dynamic |
9532 | components of variant records (identified by the ___XVL suffix in | |
9533 | the component name). Even if the target type is a PAD type, the size | |
9534 | of that type might not be statically known. So the PAD type needs | |
9535 | to be unwrapped and the resulting type needs to be fixed. Otherwise, | |
9536 | we might end up with the wrong size for our component. This can be | |
9537 | observed with the following type declarations: | |
284614f0 JB |
9538 | |
9539 | type Octal is new Integer range 0 .. 7; | |
9540 | type Octal_Array is array (Positive range <>) of Octal; | |
9541 | pragma Pack (Octal_Array); | |
9542 | ||
9543 | type Octal_Buffer (Size : Positive) is record | |
9544 | Buffer : Octal_Array (1 .. Size); | |
9545 | Length : Integer; | |
9546 | end record; | |
9547 | ||
9548 | In that case, Buffer is a PAD type whose size is unset and needs | |
9549 | to be computed by fixing the unwrapped type. | |
9550 | ||
21649b50 JB |
9551 | 4. When to ``Fix'' un-``Fixed'' sub-elements of an entity: |
9552 | ---------------------------------------------------------- | |
9553 | ||
9554 | Lastly, when should the sub-elements of an entity that remained unfixed | |
284614f0 JB |
9555 | thus far, be actually fixed? |
9556 | ||
9557 | The answer is: Only when referencing that element. For instance | |
9558 | when selecting one component of a record, this specific component | |
9559 | should be fixed at that point in time. Or when printing the value | |
9560 | of a record, each component should be fixed before its value gets | |
9561 | printed. Similarly for arrays, the element of the array should be | |
9562 | fixed when printing each element of the array, or when extracting | |
9563 | one element out of that array. On the other hand, fixing should | |
9564 | not be performed on the elements when taking a slice of an array! | |
9565 | ||
9566 | Note that one of the side-effects of miscomputing the offset and | |
9567 | size of each field is that we end up also miscomputing the size | |
9568 | of the containing type. This can have adverse results when computing | |
9569 | the value of an entity. GDB fetches the value of an entity based | |
9570 | on the size of its type, and thus a wrong size causes GDB to fetch | |
9571 | the wrong amount of memory. In the case where the computed size is | |
9572 | too small, GDB fetches too little data to print the value of our | |
9573 | entiry. Results in this case as unpredicatble, as we usually read | |
9574 | past the buffer containing the data =:-o. */ | |
9575 | ||
9576 | /* Implement the evaluate_exp routine in the exp_descriptor structure | |
9577 | for the Ada language. */ | |
9578 | ||
52ce6436 | 9579 | static struct value * |
ebf56fd3 | 9580 | ada_evaluate_subexp (struct type *expect_type, struct expression *exp, |
4c4b4cd2 | 9581 | int *pos, enum noside noside) |
14f9c5c9 AS |
9582 | { |
9583 | enum exp_opcode op; | |
b5385fc0 | 9584 | int tem; |
14f9c5c9 AS |
9585 | int pc; |
9586 | struct value *arg1 = NULL, *arg2 = NULL, *arg3; | |
9587 | struct type *type; | |
52ce6436 | 9588 | int nargs, oplen; |
d2e4a39e | 9589 | struct value **argvec; |
14f9c5c9 | 9590 | |
d2e4a39e AS |
9591 | pc = *pos; |
9592 | *pos += 1; | |
14f9c5c9 AS |
9593 | op = exp->elts[pc].opcode; |
9594 | ||
d2e4a39e | 9595 | switch (op) |
14f9c5c9 AS |
9596 | { |
9597 | default: | |
9598 | *pos -= 1; | |
6e48bd2c | 9599 | arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside); |
ca1f964d JG |
9600 | |
9601 | if (noside == EVAL_NORMAL) | |
9602 | arg1 = unwrap_value (arg1); | |
6e48bd2c JB |
9603 | |
9604 | /* If evaluating an OP_DOUBLE and an EXPECT_TYPE was provided, | |
9605 | then we need to perform the conversion manually, because | |
9606 | evaluate_subexp_standard doesn't do it. This conversion is | |
9607 | necessary in Ada because the different kinds of float/fixed | |
9608 | types in Ada have different representations. | |
9609 | ||
9610 | Similarly, we need to perform the conversion from OP_LONG | |
9611 | ourselves. */ | |
9612 | if ((op == OP_DOUBLE || op == OP_LONG) && expect_type != NULL) | |
9613 | arg1 = ada_value_cast (expect_type, arg1, noside); | |
9614 | ||
9615 | return arg1; | |
4c4b4cd2 PH |
9616 | |
9617 | case OP_STRING: | |
9618 | { | |
76a01679 | 9619 | struct value *result; |
5b4ee69b | 9620 | |
76a01679 JB |
9621 | *pos -= 1; |
9622 | result = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
9623 | /* The result type will have code OP_STRING, bashed there from | |
9624 | OP_ARRAY. Bash it back. */ | |
df407dfe AC |
9625 | if (TYPE_CODE (value_type (result)) == TYPE_CODE_STRING) |
9626 | TYPE_CODE (value_type (result)) = TYPE_CODE_ARRAY; | |
76a01679 | 9627 | return result; |
4c4b4cd2 | 9628 | } |
14f9c5c9 AS |
9629 | |
9630 | case UNOP_CAST: | |
9631 | (*pos) += 2; | |
9632 | type = exp->elts[pc + 1].type; | |
9633 | arg1 = evaluate_subexp (type, exp, pos, noside); | |
9634 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 9635 | goto nosideret; |
6e48bd2c | 9636 | arg1 = ada_value_cast (type, arg1, noside); |
14f9c5c9 AS |
9637 | return arg1; |
9638 | ||
4c4b4cd2 PH |
9639 | case UNOP_QUAL: |
9640 | (*pos) += 2; | |
9641 | type = exp->elts[pc + 1].type; | |
9642 | return ada_evaluate_subexp (type, exp, pos, noside); | |
9643 | ||
14f9c5c9 AS |
9644 | case BINOP_ASSIGN: |
9645 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
52ce6436 PH |
9646 | if (exp->elts[*pos].opcode == OP_AGGREGATE) |
9647 | { | |
9648 | arg1 = assign_aggregate (arg1, arg1, exp, pos, noside); | |
9649 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) | |
9650 | return arg1; | |
9651 | return ada_value_assign (arg1, arg1); | |
9652 | } | |
003f3813 JB |
9653 | /* Force the evaluation of the rhs ARG2 to the type of the lhs ARG1, |
9654 | except if the lhs of our assignment is a convenience variable. | |
9655 | In the case of assigning to a convenience variable, the lhs | |
9656 | should be exactly the result of the evaluation of the rhs. */ | |
9657 | type = value_type (arg1); | |
9658 | if (VALUE_LVAL (arg1) == lval_internalvar) | |
9659 | type = NULL; | |
9660 | arg2 = evaluate_subexp (type, exp, pos, noside); | |
14f9c5c9 | 9661 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 | 9662 | return arg1; |
df407dfe AC |
9663 | if (ada_is_fixed_point_type (value_type (arg1))) |
9664 | arg2 = cast_to_fixed (value_type (arg1), arg2); | |
9665 | else if (ada_is_fixed_point_type (value_type (arg2))) | |
76a01679 | 9666 | error |
323e0a4a | 9667 | (_("Fixed-point values must be assigned to fixed-point variables")); |
d2e4a39e | 9668 | else |
df407dfe | 9669 | arg2 = coerce_for_assign (value_type (arg1), arg2); |
4c4b4cd2 | 9670 | return ada_value_assign (arg1, arg2); |
14f9c5c9 AS |
9671 | |
9672 | case BINOP_ADD: | |
9673 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
9674 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
9675 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 9676 | goto nosideret; |
2ac8a782 JB |
9677 | if (TYPE_CODE (value_type (arg1)) == TYPE_CODE_PTR) |
9678 | return (value_from_longest | |
9679 | (value_type (arg1), | |
9680 | value_as_long (arg1) + value_as_long (arg2))); | |
df407dfe AC |
9681 | if ((ada_is_fixed_point_type (value_type (arg1)) |
9682 | || ada_is_fixed_point_type (value_type (arg2))) | |
9683 | && value_type (arg1) != value_type (arg2)) | |
323e0a4a | 9684 | error (_("Operands of fixed-point addition must have the same type")); |
b7789565 JB |
9685 | /* Do the addition, and cast the result to the type of the first |
9686 | argument. We cannot cast the result to a reference type, so if | |
9687 | ARG1 is a reference type, find its underlying type. */ | |
9688 | type = value_type (arg1); | |
9689 | while (TYPE_CODE (type) == TYPE_CODE_REF) | |
9690 | type = TYPE_TARGET_TYPE (type); | |
f44316fa | 9691 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
89eef114 | 9692 | return value_cast (type, value_binop (arg1, arg2, BINOP_ADD)); |
14f9c5c9 AS |
9693 | |
9694 | case BINOP_SUB: | |
9695 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
9696 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
9697 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 9698 | goto nosideret; |
2ac8a782 JB |
9699 | if (TYPE_CODE (value_type (arg1)) == TYPE_CODE_PTR) |
9700 | return (value_from_longest | |
9701 | (value_type (arg1), | |
9702 | value_as_long (arg1) - value_as_long (arg2))); | |
df407dfe AC |
9703 | if ((ada_is_fixed_point_type (value_type (arg1)) |
9704 | || ada_is_fixed_point_type (value_type (arg2))) | |
9705 | && value_type (arg1) != value_type (arg2)) | |
0963b4bd MS |
9706 | error (_("Operands of fixed-point subtraction " |
9707 | "must have the same type")); | |
b7789565 JB |
9708 | /* Do the substraction, and cast the result to the type of the first |
9709 | argument. We cannot cast the result to a reference type, so if | |
9710 | ARG1 is a reference type, find its underlying type. */ | |
9711 | type = value_type (arg1); | |
9712 | while (TYPE_CODE (type) == TYPE_CODE_REF) | |
9713 | type = TYPE_TARGET_TYPE (type); | |
f44316fa | 9714 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
89eef114 | 9715 | return value_cast (type, value_binop (arg1, arg2, BINOP_SUB)); |
14f9c5c9 AS |
9716 | |
9717 | case BINOP_MUL: | |
9718 | case BINOP_DIV: | |
e1578042 JB |
9719 | case BINOP_REM: |
9720 | case BINOP_MOD: | |
14f9c5c9 AS |
9721 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
9722 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9723 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 9724 | goto nosideret; |
e1578042 | 9725 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
9c2be529 JB |
9726 | { |
9727 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
9728 | return value_zero (value_type (arg1), not_lval); | |
9729 | } | |
14f9c5c9 | 9730 | else |
4c4b4cd2 | 9731 | { |
a53b7a21 | 9732 | type = builtin_type (exp->gdbarch)->builtin_double; |
df407dfe | 9733 | if (ada_is_fixed_point_type (value_type (arg1))) |
a53b7a21 | 9734 | arg1 = cast_from_fixed (type, arg1); |
df407dfe | 9735 | if (ada_is_fixed_point_type (value_type (arg2))) |
a53b7a21 | 9736 | arg2 = cast_from_fixed (type, arg2); |
f44316fa | 9737 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
4c4b4cd2 PH |
9738 | return ada_value_binop (arg1, arg2, op); |
9739 | } | |
9740 | ||
4c4b4cd2 PH |
9741 | case BINOP_EQUAL: |
9742 | case BINOP_NOTEQUAL: | |
14f9c5c9 | 9743 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
df407dfe | 9744 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
14f9c5c9 | 9745 | if (noside == EVAL_SKIP) |
76a01679 | 9746 | goto nosideret; |
4c4b4cd2 | 9747 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 9748 | tem = 0; |
4c4b4cd2 | 9749 | else |
f44316fa UW |
9750 | { |
9751 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
9752 | tem = ada_value_equal (arg1, arg2); | |
9753 | } | |
4c4b4cd2 | 9754 | if (op == BINOP_NOTEQUAL) |
76a01679 | 9755 | tem = !tem; |
fbb06eb1 UW |
9756 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
9757 | return value_from_longest (type, (LONGEST) tem); | |
4c4b4cd2 PH |
9758 | |
9759 | case UNOP_NEG: | |
9760 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9761 | if (noside == EVAL_SKIP) | |
9762 | goto nosideret; | |
df407dfe AC |
9763 | else if (ada_is_fixed_point_type (value_type (arg1))) |
9764 | return value_cast (value_type (arg1), value_neg (arg1)); | |
14f9c5c9 | 9765 | else |
f44316fa UW |
9766 | { |
9767 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); | |
9768 | return value_neg (arg1); | |
9769 | } | |
4c4b4cd2 | 9770 | |
2330c6c6 JB |
9771 | case BINOP_LOGICAL_AND: |
9772 | case BINOP_LOGICAL_OR: | |
9773 | case UNOP_LOGICAL_NOT: | |
000d5124 JB |
9774 | { |
9775 | struct value *val; | |
9776 | ||
9777 | *pos -= 1; | |
9778 | val = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
fbb06eb1 UW |
9779 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
9780 | return value_cast (type, val); | |
000d5124 | 9781 | } |
2330c6c6 JB |
9782 | |
9783 | case BINOP_BITWISE_AND: | |
9784 | case BINOP_BITWISE_IOR: | |
9785 | case BINOP_BITWISE_XOR: | |
000d5124 JB |
9786 | { |
9787 | struct value *val; | |
9788 | ||
9789 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); | |
9790 | *pos = pc; | |
9791 | val = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
9792 | ||
9793 | return value_cast (value_type (arg1), val); | |
9794 | } | |
2330c6c6 | 9795 | |
14f9c5c9 AS |
9796 | case OP_VAR_VALUE: |
9797 | *pos -= 1; | |
6799def4 | 9798 | |
14f9c5c9 | 9799 | if (noside == EVAL_SKIP) |
4c4b4cd2 PH |
9800 | { |
9801 | *pos += 4; | |
9802 | goto nosideret; | |
9803 | } | |
9804 | else if (SYMBOL_DOMAIN (exp->elts[pc + 2].symbol) == UNDEF_DOMAIN) | |
76a01679 JB |
9805 | /* Only encountered when an unresolved symbol occurs in a |
9806 | context other than a function call, in which case, it is | |
52ce6436 | 9807 | invalid. */ |
323e0a4a | 9808 | error (_("Unexpected unresolved symbol, %s, during evaluation"), |
4c4b4cd2 | 9809 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); |
14f9c5c9 | 9810 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 | 9811 | { |
0c1f74cf | 9812 | type = static_unwrap_type (SYMBOL_TYPE (exp->elts[pc + 2].symbol)); |
31dbc1c5 JB |
9813 | /* Check to see if this is a tagged type. We also need to handle |
9814 | the case where the type is a reference to a tagged type, but | |
9815 | we have to be careful to exclude pointers to tagged types. | |
9816 | The latter should be shown as usual (as a pointer), whereas | |
9817 | a reference should mostly be transparent to the user. */ | |
9818 | if (ada_is_tagged_type (type, 0) | |
9819 | || (TYPE_CODE(type) == TYPE_CODE_REF | |
9820 | && ada_is_tagged_type (TYPE_TARGET_TYPE (type), 0))) | |
0c1f74cf JB |
9821 | { |
9822 | /* Tagged types are a little special in the fact that the real | |
9823 | type is dynamic and can only be determined by inspecting the | |
9824 | object's tag. This means that we need to get the object's | |
9825 | value first (EVAL_NORMAL) and then extract the actual object | |
9826 | type from its tag. | |
9827 | ||
9828 | Note that we cannot skip the final step where we extract | |
9829 | the object type from its tag, because the EVAL_NORMAL phase | |
9830 | results in dynamic components being resolved into fixed ones. | |
9831 | This can cause problems when trying to print the type | |
9832 | description of tagged types whose parent has a dynamic size: | |
9833 | We use the type name of the "_parent" component in order | |
9834 | to print the name of the ancestor type in the type description. | |
9835 | If that component had a dynamic size, the resolution into | |
9836 | a fixed type would result in the loss of that type name, | |
9837 | thus preventing us from printing the name of the ancestor | |
9838 | type in the type description. */ | |
9839 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_NORMAL); | |
b50d69b5 JG |
9840 | |
9841 | if (TYPE_CODE (type) != TYPE_CODE_REF) | |
9842 | { | |
9843 | struct type *actual_type; | |
9844 | ||
9845 | actual_type = type_from_tag (ada_value_tag (arg1)); | |
9846 | if (actual_type == NULL) | |
9847 | /* If, for some reason, we were unable to determine | |
9848 | the actual type from the tag, then use the static | |
9849 | approximation that we just computed as a fallback. | |
9850 | This can happen if the debugging information is | |
9851 | incomplete, for instance. */ | |
9852 | actual_type = type; | |
9853 | return value_zero (actual_type, not_lval); | |
9854 | } | |
9855 | else | |
9856 | { | |
9857 | /* In the case of a ref, ada_coerce_ref takes care | |
9858 | of determining the actual type. But the evaluation | |
9859 | should return a ref as it should be valid to ask | |
9860 | for its address; so rebuild a ref after coerce. */ | |
9861 | arg1 = ada_coerce_ref (arg1); | |
9862 | return value_ref (arg1); | |
9863 | } | |
0c1f74cf JB |
9864 | } |
9865 | ||
4c4b4cd2 PH |
9866 | *pos += 4; |
9867 | return value_zero | |
9868 | (to_static_fixed_type | |
9869 | (static_unwrap_type (SYMBOL_TYPE (exp->elts[pc + 2].symbol))), | |
9870 | not_lval); | |
9871 | } | |
d2e4a39e | 9872 | else |
4c4b4cd2 | 9873 | { |
284614f0 | 9874 | arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside); |
4c4b4cd2 PH |
9875 | return ada_to_fixed_value (arg1); |
9876 | } | |
9877 | ||
9878 | case OP_FUNCALL: | |
9879 | (*pos) += 2; | |
9880 | ||
9881 | /* Allocate arg vector, including space for the function to be | |
9882 | called in argvec[0] and a terminating NULL. */ | |
9883 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
9884 | argvec = | |
9885 | (struct value **) alloca (sizeof (struct value *) * (nargs + 2)); | |
9886 | ||
9887 | if (exp->elts[*pos].opcode == OP_VAR_VALUE | |
76a01679 | 9888 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
323e0a4a | 9889 | error (_("Unexpected unresolved symbol, %s, during evaluation"), |
4c4b4cd2 PH |
9890 | SYMBOL_PRINT_NAME (exp->elts[pc + 5].symbol)); |
9891 | else | |
9892 | { | |
9893 | for (tem = 0; tem <= nargs; tem += 1) | |
9894 | argvec[tem] = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
9895 | argvec[tem] = 0; | |
9896 | ||
9897 | if (noside == EVAL_SKIP) | |
9898 | goto nosideret; | |
9899 | } | |
9900 | ||
ad82864c JB |
9901 | if (ada_is_constrained_packed_array_type |
9902 | (desc_base_type (value_type (argvec[0])))) | |
4c4b4cd2 | 9903 | argvec[0] = ada_coerce_to_simple_array (argvec[0]); |
284614f0 JB |
9904 | else if (TYPE_CODE (value_type (argvec[0])) == TYPE_CODE_ARRAY |
9905 | && TYPE_FIELD_BITSIZE (value_type (argvec[0]), 0) != 0) | |
9906 | /* This is a packed array that has already been fixed, and | |
9907 | therefore already coerced to a simple array. Nothing further | |
9908 | to do. */ | |
9909 | ; | |
df407dfe AC |
9910 | else if (TYPE_CODE (value_type (argvec[0])) == TYPE_CODE_REF |
9911 | || (TYPE_CODE (value_type (argvec[0])) == TYPE_CODE_ARRAY | |
76a01679 | 9912 | && VALUE_LVAL (argvec[0]) == lval_memory)) |
4c4b4cd2 PH |
9913 | argvec[0] = value_addr (argvec[0]); |
9914 | ||
df407dfe | 9915 | type = ada_check_typedef (value_type (argvec[0])); |
720d1a40 JB |
9916 | |
9917 | /* Ada allows us to implicitly dereference arrays when subscripting | |
8f465ea7 JB |
9918 | them. So, if this is an array typedef (encoding use for array |
9919 | access types encoded as fat pointers), strip it now. */ | |
720d1a40 JB |
9920 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) |
9921 | type = ada_typedef_target_type (type); | |
9922 | ||
4c4b4cd2 PH |
9923 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
9924 | { | |
61ee279c | 9925 | switch (TYPE_CODE (ada_check_typedef (TYPE_TARGET_TYPE (type)))) |
4c4b4cd2 PH |
9926 | { |
9927 | case TYPE_CODE_FUNC: | |
61ee279c | 9928 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
4c4b4cd2 PH |
9929 | break; |
9930 | case TYPE_CODE_ARRAY: | |
9931 | break; | |
9932 | case TYPE_CODE_STRUCT: | |
9933 | if (noside != EVAL_AVOID_SIDE_EFFECTS) | |
9934 | argvec[0] = ada_value_ind (argvec[0]); | |
61ee279c | 9935 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
4c4b4cd2 PH |
9936 | break; |
9937 | default: | |
323e0a4a | 9938 | error (_("cannot subscript or call something of type `%s'"), |
df407dfe | 9939 | ada_type_name (value_type (argvec[0]))); |
4c4b4cd2 PH |
9940 | break; |
9941 | } | |
9942 | } | |
9943 | ||
9944 | switch (TYPE_CODE (type)) | |
9945 | { | |
9946 | case TYPE_CODE_FUNC: | |
9947 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
c8ea1972 PH |
9948 | { |
9949 | struct type *rtype = TYPE_TARGET_TYPE (type); | |
9950 | ||
9951 | if (TYPE_GNU_IFUNC (type)) | |
9952 | return allocate_value (TYPE_TARGET_TYPE (rtype)); | |
9953 | return allocate_value (rtype); | |
9954 | } | |
4c4b4cd2 | 9955 | return call_function_by_hand (argvec[0], nargs, argvec + 1); |
c8ea1972 PH |
9956 | case TYPE_CODE_INTERNAL_FUNCTION: |
9957 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
9958 | /* We don't know anything about what the internal | |
9959 | function might return, but we have to return | |
9960 | something. */ | |
9961 | return value_zero (builtin_type (exp->gdbarch)->builtin_int, | |
9962 | not_lval); | |
9963 | else | |
9964 | return call_internal_function (exp->gdbarch, exp->language_defn, | |
9965 | argvec[0], nargs, argvec + 1); | |
9966 | ||
4c4b4cd2 PH |
9967 | case TYPE_CODE_STRUCT: |
9968 | { | |
9969 | int arity; | |
9970 | ||
4c4b4cd2 PH |
9971 | arity = ada_array_arity (type); |
9972 | type = ada_array_element_type (type, nargs); | |
9973 | if (type == NULL) | |
323e0a4a | 9974 | error (_("cannot subscript or call a record")); |
4c4b4cd2 | 9975 | if (arity != nargs) |
323e0a4a | 9976 | error (_("wrong number of subscripts; expecting %d"), arity); |
4c4b4cd2 | 9977 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
0a07e705 | 9978 | return value_zero (ada_aligned_type (type), lval_memory); |
4c4b4cd2 PH |
9979 | return |
9980 | unwrap_value (ada_value_subscript | |
9981 | (argvec[0], nargs, argvec + 1)); | |
9982 | } | |
9983 | case TYPE_CODE_ARRAY: | |
9984 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
9985 | { | |
9986 | type = ada_array_element_type (type, nargs); | |
9987 | if (type == NULL) | |
323e0a4a | 9988 | error (_("element type of array unknown")); |
4c4b4cd2 | 9989 | else |
0a07e705 | 9990 | return value_zero (ada_aligned_type (type), lval_memory); |
4c4b4cd2 PH |
9991 | } |
9992 | return | |
9993 | unwrap_value (ada_value_subscript | |
9994 | (ada_coerce_to_simple_array (argvec[0]), | |
9995 | nargs, argvec + 1)); | |
9996 | case TYPE_CODE_PTR: /* Pointer to array */ | |
9997 | type = to_fixed_array_type (TYPE_TARGET_TYPE (type), NULL, 1); | |
9998 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
9999 | { | |
10000 | type = ada_array_element_type (type, nargs); | |
10001 | if (type == NULL) | |
323e0a4a | 10002 | error (_("element type of array unknown")); |
4c4b4cd2 | 10003 | else |
0a07e705 | 10004 | return value_zero (ada_aligned_type (type), lval_memory); |
4c4b4cd2 PH |
10005 | } |
10006 | return | |
10007 | unwrap_value (ada_value_ptr_subscript (argvec[0], type, | |
10008 | nargs, argvec + 1)); | |
10009 | ||
10010 | default: | |
e1d5a0d2 PH |
10011 | error (_("Attempt to index or call something other than an " |
10012 | "array or function")); | |
4c4b4cd2 PH |
10013 | } |
10014 | ||
10015 | case TERNOP_SLICE: | |
10016 | { | |
10017 | struct value *array = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
10018 | struct value *low_bound_val = | |
10019 | evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
714e53ab PH |
10020 | struct value *high_bound_val = |
10021 | evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
10022 | LONGEST low_bound; | |
10023 | LONGEST high_bound; | |
5b4ee69b | 10024 | |
994b9211 AC |
10025 | low_bound_val = coerce_ref (low_bound_val); |
10026 | high_bound_val = coerce_ref (high_bound_val); | |
714e53ab PH |
10027 | low_bound = pos_atr (low_bound_val); |
10028 | high_bound = pos_atr (high_bound_val); | |
963a6417 | 10029 | |
4c4b4cd2 PH |
10030 | if (noside == EVAL_SKIP) |
10031 | goto nosideret; | |
10032 | ||
4c4b4cd2 PH |
10033 | /* If this is a reference to an aligner type, then remove all |
10034 | the aligners. */ | |
df407dfe AC |
10035 | if (TYPE_CODE (value_type (array)) == TYPE_CODE_REF |
10036 | && ada_is_aligner_type (TYPE_TARGET_TYPE (value_type (array)))) | |
10037 | TYPE_TARGET_TYPE (value_type (array)) = | |
10038 | ada_aligned_type (TYPE_TARGET_TYPE (value_type (array))); | |
4c4b4cd2 | 10039 | |
ad82864c | 10040 | if (ada_is_constrained_packed_array_type (value_type (array))) |
323e0a4a | 10041 | error (_("cannot slice a packed array")); |
4c4b4cd2 PH |
10042 | |
10043 | /* If this is a reference to an array or an array lvalue, | |
10044 | convert to a pointer. */ | |
df407dfe AC |
10045 | if (TYPE_CODE (value_type (array)) == TYPE_CODE_REF |
10046 | || (TYPE_CODE (value_type (array)) == TYPE_CODE_ARRAY | |
4c4b4cd2 PH |
10047 | && VALUE_LVAL (array) == lval_memory)) |
10048 | array = value_addr (array); | |
10049 | ||
1265e4aa | 10050 | if (noside == EVAL_AVOID_SIDE_EFFECTS |
61ee279c | 10051 | && ada_is_array_descriptor_type (ada_check_typedef |
df407dfe | 10052 | (value_type (array)))) |
0b5d8877 | 10053 | return empty_array (ada_type_of_array (array, 0), low_bound); |
4c4b4cd2 PH |
10054 | |
10055 | array = ada_coerce_to_simple_array_ptr (array); | |
10056 | ||
714e53ab PH |
10057 | /* If we have more than one level of pointer indirection, |
10058 | dereference the value until we get only one level. */ | |
df407dfe AC |
10059 | while (TYPE_CODE (value_type (array)) == TYPE_CODE_PTR |
10060 | && (TYPE_CODE (TYPE_TARGET_TYPE (value_type (array))) | |
714e53ab PH |
10061 | == TYPE_CODE_PTR)) |
10062 | array = value_ind (array); | |
10063 | ||
10064 | /* Make sure we really do have an array type before going further, | |
10065 | to avoid a SEGV when trying to get the index type or the target | |
10066 | type later down the road if the debug info generated by | |
10067 | the compiler is incorrect or incomplete. */ | |
df407dfe | 10068 | if (!ada_is_simple_array_type (value_type (array))) |
323e0a4a | 10069 | error (_("cannot take slice of non-array")); |
714e53ab | 10070 | |
828292f2 JB |
10071 | if (TYPE_CODE (ada_check_typedef (value_type (array))) |
10072 | == TYPE_CODE_PTR) | |
4c4b4cd2 | 10073 | { |
828292f2 JB |
10074 | struct type *type0 = ada_check_typedef (value_type (array)); |
10075 | ||
0b5d8877 | 10076 | if (high_bound < low_bound || noside == EVAL_AVOID_SIDE_EFFECTS) |
828292f2 | 10077 | return empty_array (TYPE_TARGET_TYPE (type0), low_bound); |
4c4b4cd2 PH |
10078 | else |
10079 | { | |
10080 | struct type *arr_type0 = | |
828292f2 | 10081 | to_fixed_array_type (TYPE_TARGET_TYPE (type0), NULL, 1); |
5b4ee69b | 10082 | |
f5938064 JG |
10083 | return ada_value_slice_from_ptr (array, arr_type0, |
10084 | longest_to_int (low_bound), | |
10085 | longest_to_int (high_bound)); | |
4c4b4cd2 PH |
10086 | } |
10087 | } | |
10088 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10089 | return array; | |
10090 | else if (high_bound < low_bound) | |
df407dfe | 10091 | return empty_array (value_type (array), low_bound); |
4c4b4cd2 | 10092 | else |
529cad9c PH |
10093 | return ada_value_slice (array, longest_to_int (low_bound), |
10094 | longest_to_int (high_bound)); | |
4c4b4cd2 | 10095 | } |
14f9c5c9 | 10096 | |
4c4b4cd2 PH |
10097 | case UNOP_IN_RANGE: |
10098 | (*pos) += 2; | |
10099 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8008e265 | 10100 | type = check_typedef (exp->elts[pc + 1].type); |
14f9c5c9 | 10101 | |
14f9c5c9 | 10102 | if (noside == EVAL_SKIP) |
4c4b4cd2 | 10103 | goto nosideret; |
14f9c5c9 | 10104 | |
4c4b4cd2 PH |
10105 | switch (TYPE_CODE (type)) |
10106 | { | |
10107 | default: | |
e1d5a0d2 PH |
10108 | lim_warning (_("Membership test incompletely implemented; " |
10109 | "always returns true")); | |
fbb06eb1 UW |
10110 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
10111 | return value_from_longest (type, (LONGEST) 1); | |
4c4b4cd2 PH |
10112 | |
10113 | case TYPE_CODE_RANGE: | |
030b4912 UW |
10114 | arg2 = value_from_longest (type, TYPE_LOW_BOUND (type)); |
10115 | arg3 = value_from_longest (type, TYPE_HIGH_BOUND (type)); | |
f44316fa UW |
10116 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
10117 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg3); | |
fbb06eb1 UW |
10118 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
10119 | return | |
10120 | value_from_longest (type, | |
4c4b4cd2 PH |
10121 | (value_less (arg1, arg3) |
10122 | || value_equal (arg1, arg3)) | |
10123 | && (value_less (arg2, arg1) | |
10124 | || value_equal (arg2, arg1))); | |
10125 | } | |
10126 | ||
10127 | case BINOP_IN_BOUNDS: | |
14f9c5c9 | 10128 | (*pos) += 2; |
4c4b4cd2 PH |
10129 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
10130 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
14f9c5c9 | 10131 | |
4c4b4cd2 PH |
10132 | if (noside == EVAL_SKIP) |
10133 | goto nosideret; | |
14f9c5c9 | 10134 | |
4c4b4cd2 | 10135 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
fbb06eb1 UW |
10136 | { |
10137 | type = language_bool_type (exp->language_defn, exp->gdbarch); | |
10138 | return value_zero (type, not_lval); | |
10139 | } | |
14f9c5c9 | 10140 | |
4c4b4cd2 | 10141 | tem = longest_to_int (exp->elts[pc + 1].longconst); |
14f9c5c9 | 10142 | |
1eea4ebd UW |
10143 | type = ada_index_type (value_type (arg2), tem, "range"); |
10144 | if (!type) | |
10145 | type = value_type (arg1); | |
14f9c5c9 | 10146 | |
1eea4ebd UW |
10147 | arg3 = value_from_longest (type, ada_array_bound (arg2, tem, 1)); |
10148 | arg2 = value_from_longest (type, ada_array_bound (arg2, tem, 0)); | |
d2e4a39e | 10149 | |
f44316fa UW |
10150 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
10151 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg3); | |
fbb06eb1 | 10152 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
4c4b4cd2 | 10153 | return |
fbb06eb1 | 10154 | value_from_longest (type, |
4c4b4cd2 PH |
10155 | (value_less (arg1, arg3) |
10156 | || value_equal (arg1, arg3)) | |
10157 | && (value_less (arg2, arg1) | |
10158 | || value_equal (arg2, arg1))); | |
10159 | ||
10160 | case TERNOP_IN_RANGE: | |
10161 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
10162 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
10163 | arg3 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
10164 | ||
10165 | if (noside == EVAL_SKIP) | |
10166 | goto nosideret; | |
10167 | ||
f44316fa UW |
10168 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
10169 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg3); | |
fbb06eb1 | 10170 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
4c4b4cd2 | 10171 | return |
fbb06eb1 | 10172 | value_from_longest (type, |
4c4b4cd2 PH |
10173 | (value_less (arg1, arg3) |
10174 | || value_equal (arg1, arg3)) | |
10175 | && (value_less (arg2, arg1) | |
10176 | || value_equal (arg2, arg1))); | |
10177 | ||
10178 | case OP_ATR_FIRST: | |
10179 | case OP_ATR_LAST: | |
10180 | case OP_ATR_LENGTH: | |
10181 | { | |
76a01679 | 10182 | struct type *type_arg; |
5b4ee69b | 10183 | |
76a01679 JB |
10184 | if (exp->elts[*pos].opcode == OP_TYPE) |
10185 | { | |
10186 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
10187 | arg1 = NULL; | |
5bc23cb3 | 10188 | type_arg = check_typedef (exp->elts[pc + 2].type); |
76a01679 JB |
10189 | } |
10190 | else | |
10191 | { | |
10192 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
10193 | type_arg = NULL; | |
10194 | } | |
10195 | ||
10196 | if (exp->elts[*pos].opcode != OP_LONG) | |
323e0a4a | 10197 | error (_("Invalid operand to '%s"), ada_attribute_name (op)); |
76a01679 JB |
10198 | tem = longest_to_int (exp->elts[*pos + 2].longconst); |
10199 | *pos += 4; | |
10200 | ||
10201 | if (noside == EVAL_SKIP) | |
10202 | goto nosideret; | |
10203 | ||
10204 | if (type_arg == NULL) | |
10205 | { | |
10206 | arg1 = ada_coerce_ref (arg1); | |
10207 | ||
ad82864c | 10208 | if (ada_is_constrained_packed_array_type (value_type (arg1))) |
76a01679 JB |
10209 | arg1 = ada_coerce_to_simple_array (arg1); |
10210 | ||
1eea4ebd UW |
10211 | type = ada_index_type (value_type (arg1), tem, |
10212 | ada_attribute_name (op)); | |
10213 | if (type == NULL) | |
10214 | type = builtin_type (exp->gdbarch)->builtin_int; | |
76a01679 JB |
10215 | |
10216 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
1eea4ebd | 10217 | return allocate_value (type); |
76a01679 JB |
10218 | |
10219 | switch (op) | |
10220 | { | |
10221 | default: /* Should never happen. */ | |
323e0a4a | 10222 | error (_("unexpected attribute encountered")); |
76a01679 | 10223 | case OP_ATR_FIRST: |
1eea4ebd UW |
10224 | return value_from_longest |
10225 | (type, ada_array_bound (arg1, tem, 0)); | |
76a01679 | 10226 | case OP_ATR_LAST: |
1eea4ebd UW |
10227 | return value_from_longest |
10228 | (type, ada_array_bound (arg1, tem, 1)); | |
76a01679 | 10229 | case OP_ATR_LENGTH: |
1eea4ebd UW |
10230 | return value_from_longest |
10231 | (type, ada_array_length (arg1, tem)); | |
76a01679 JB |
10232 | } |
10233 | } | |
10234 | else if (discrete_type_p (type_arg)) | |
10235 | { | |
10236 | struct type *range_type; | |
0d5cff50 | 10237 | const char *name = ada_type_name (type_arg); |
5b4ee69b | 10238 | |
76a01679 JB |
10239 | range_type = NULL; |
10240 | if (name != NULL && TYPE_CODE (type_arg) != TYPE_CODE_ENUM) | |
28c85d6c | 10241 | range_type = to_fixed_range_type (type_arg, NULL); |
76a01679 JB |
10242 | if (range_type == NULL) |
10243 | range_type = type_arg; | |
10244 | switch (op) | |
10245 | { | |
10246 | default: | |
323e0a4a | 10247 | error (_("unexpected attribute encountered")); |
76a01679 | 10248 | case OP_ATR_FIRST: |
690cc4eb | 10249 | return value_from_longest |
43bbcdc2 | 10250 | (range_type, ada_discrete_type_low_bound (range_type)); |
76a01679 | 10251 | case OP_ATR_LAST: |
690cc4eb | 10252 | return value_from_longest |
43bbcdc2 | 10253 | (range_type, ada_discrete_type_high_bound (range_type)); |
76a01679 | 10254 | case OP_ATR_LENGTH: |
323e0a4a | 10255 | error (_("the 'length attribute applies only to array types")); |
76a01679 JB |
10256 | } |
10257 | } | |
10258 | else if (TYPE_CODE (type_arg) == TYPE_CODE_FLT) | |
323e0a4a | 10259 | error (_("unimplemented type attribute")); |
76a01679 JB |
10260 | else |
10261 | { | |
10262 | LONGEST low, high; | |
10263 | ||
ad82864c JB |
10264 | if (ada_is_constrained_packed_array_type (type_arg)) |
10265 | type_arg = decode_constrained_packed_array_type (type_arg); | |
76a01679 | 10266 | |
1eea4ebd | 10267 | type = ada_index_type (type_arg, tem, ada_attribute_name (op)); |
76a01679 | 10268 | if (type == NULL) |
1eea4ebd UW |
10269 | type = builtin_type (exp->gdbarch)->builtin_int; |
10270 | ||
76a01679 JB |
10271 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
10272 | return allocate_value (type); | |
10273 | ||
10274 | switch (op) | |
10275 | { | |
10276 | default: | |
323e0a4a | 10277 | error (_("unexpected attribute encountered")); |
76a01679 | 10278 | case OP_ATR_FIRST: |
1eea4ebd | 10279 | low = ada_array_bound_from_type (type_arg, tem, 0); |
76a01679 JB |
10280 | return value_from_longest (type, low); |
10281 | case OP_ATR_LAST: | |
1eea4ebd | 10282 | high = ada_array_bound_from_type (type_arg, tem, 1); |
76a01679 JB |
10283 | return value_from_longest (type, high); |
10284 | case OP_ATR_LENGTH: | |
1eea4ebd UW |
10285 | low = ada_array_bound_from_type (type_arg, tem, 0); |
10286 | high = ada_array_bound_from_type (type_arg, tem, 1); | |
76a01679 JB |
10287 | return value_from_longest (type, high - low + 1); |
10288 | } | |
10289 | } | |
14f9c5c9 AS |
10290 | } |
10291 | ||
4c4b4cd2 PH |
10292 | case OP_ATR_TAG: |
10293 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
10294 | if (noside == EVAL_SKIP) | |
76a01679 | 10295 | goto nosideret; |
4c4b4cd2 PH |
10296 | |
10297 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
76a01679 | 10298 | return value_zero (ada_tag_type (arg1), not_lval); |
4c4b4cd2 PH |
10299 | |
10300 | return ada_value_tag (arg1); | |
10301 | ||
10302 | case OP_ATR_MIN: | |
10303 | case OP_ATR_MAX: | |
10304 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 AS |
10305 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
10306 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
10307 | if (noside == EVAL_SKIP) | |
76a01679 | 10308 | goto nosideret; |
d2e4a39e | 10309 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
df407dfe | 10310 | return value_zero (value_type (arg1), not_lval); |
14f9c5c9 | 10311 | else |
f44316fa UW |
10312 | { |
10313 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
10314 | return value_binop (arg1, arg2, | |
10315 | op == OP_ATR_MIN ? BINOP_MIN : BINOP_MAX); | |
10316 | } | |
14f9c5c9 | 10317 | |
4c4b4cd2 PH |
10318 | case OP_ATR_MODULUS: |
10319 | { | |
31dedfee | 10320 | struct type *type_arg = check_typedef (exp->elts[pc + 2].type); |
4c4b4cd2 | 10321 | |
5b4ee69b | 10322 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); |
76a01679 JB |
10323 | if (noside == EVAL_SKIP) |
10324 | goto nosideret; | |
4c4b4cd2 | 10325 | |
76a01679 | 10326 | if (!ada_is_modular_type (type_arg)) |
323e0a4a | 10327 | error (_("'modulus must be applied to modular type")); |
4c4b4cd2 | 10328 | |
76a01679 JB |
10329 | return value_from_longest (TYPE_TARGET_TYPE (type_arg), |
10330 | ada_modulus (type_arg)); | |
4c4b4cd2 PH |
10331 | } |
10332 | ||
10333 | ||
10334 | case OP_ATR_POS: | |
10335 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 AS |
10336 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
10337 | if (noside == EVAL_SKIP) | |
76a01679 | 10338 | goto nosideret; |
3cb382c9 UW |
10339 | type = builtin_type (exp->gdbarch)->builtin_int; |
10340 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
10341 | return value_zero (type, not_lval); | |
14f9c5c9 | 10342 | else |
3cb382c9 | 10343 | return value_pos_atr (type, arg1); |
14f9c5c9 | 10344 | |
4c4b4cd2 PH |
10345 | case OP_ATR_SIZE: |
10346 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
8c1c099f JB |
10347 | type = value_type (arg1); |
10348 | ||
10349 | /* If the argument is a reference, then dereference its type, since | |
10350 | the user is really asking for the size of the actual object, | |
10351 | not the size of the pointer. */ | |
10352 | if (TYPE_CODE (type) == TYPE_CODE_REF) | |
10353 | type = TYPE_TARGET_TYPE (type); | |
10354 | ||
4c4b4cd2 | 10355 | if (noside == EVAL_SKIP) |
76a01679 | 10356 | goto nosideret; |
4c4b4cd2 | 10357 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
22601c15 | 10358 | return value_zero (builtin_type (exp->gdbarch)->builtin_int, not_lval); |
4c4b4cd2 | 10359 | else |
22601c15 | 10360 | return value_from_longest (builtin_type (exp->gdbarch)->builtin_int, |
8c1c099f | 10361 | TARGET_CHAR_BIT * TYPE_LENGTH (type)); |
4c4b4cd2 PH |
10362 | |
10363 | case OP_ATR_VAL: | |
10364 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 | 10365 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
4c4b4cd2 | 10366 | type = exp->elts[pc + 2].type; |
14f9c5c9 | 10367 | if (noside == EVAL_SKIP) |
76a01679 | 10368 | goto nosideret; |
4c4b4cd2 | 10369 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 10370 | return value_zero (type, not_lval); |
4c4b4cd2 | 10371 | else |
76a01679 | 10372 | return value_val_atr (type, arg1); |
4c4b4cd2 PH |
10373 | |
10374 | case BINOP_EXP: | |
10375 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
10376 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
10377 | if (noside == EVAL_SKIP) | |
10378 | goto nosideret; | |
10379 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
df407dfe | 10380 | return value_zero (value_type (arg1), not_lval); |
4c4b4cd2 | 10381 | else |
f44316fa UW |
10382 | { |
10383 | /* For integer exponentiation operations, | |
10384 | only promote the first argument. */ | |
10385 | if (is_integral_type (value_type (arg2))) | |
10386 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); | |
10387 | else | |
10388 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
10389 | ||
10390 | return value_binop (arg1, arg2, op); | |
10391 | } | |
4c4b4cd2 PH |
10392 | |
10393 | case UNOP_PLUS: | |
10394 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
10395 | if (noside == EVAL_SKIP) | |
10396 | goto nosideret; | |
10397 | else | |
10398 | return arg1; | |
10399 | ||
10400 | case UNOP_ABS: | |
10401 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
10402 | if (noside == EVAL_SKIP) | |
10403 | goto nosideret; | |
f44316fa | 10404 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); |
df407dfe | 10405 | if (value_less (arg1, value_zero (value_type (arg1), not_lval))) |
4c4b4cd2 | 10406 | return value_neg (arg1); |
14f9c5c9 | 10407 | else |
4c4b4cd2 | 10408 | return arg1; |
14f9c5c9 AS |
10409 | |
10410 | case UNOP_IND: | |
6b0d7253 | 10411 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
14f9c5c9 | 10412 | if (noside == EVAL_SKIP) |
4c4b4cd2 | 10413 | goto nosideret; |
df407dfe | 10414 | type = ada_check_typedef (value_type (arg1)); |
14f9c5c9 | 10415 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 PH |
10416 | { |
10417 | if (ada_is_array_descriptor_type (type)) | |
10418 | /* GDB allows dereferencing GNAT array descriptors. */ | |
10419 | { | |
10420 | struct type *arrType = ada_type_of_array (arg1, 0); | |
5b4ee69b | 10421 | |
4c4b4cd2 | 10422 | if (arrType == NULL) |
323e0a4a | 10423 | error (_("Attempt to dereference null array pointer.")); |
00a4c844 | 10424 | return value_at_lazy (arrType, 0); |
4c4b4cd2 PH |
10425 | } |
10426 | else if (TYPE_CODE (type) == TYPE_CODE_PTR | |
10427 | || TYPE_CODE (type) == TYPE_CODE_REF | |
10428 | /* In C you can dereference an array to get the 1st elt. */ | |
10429 | || TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
714e53ab PH |
10430 | { |
10431 | type = to_static_fixed_type | |
10432 | (ada_aligned_type | |
10433 | (ada_check_typedef (TYPE_TARGET_TYPE (type)))); | |
10434 | check_size (type); | |
10435 | return value_zero (type, lval_memory); | |
10436 | } | |
4c4b4cd2 | 10437 | else if (TYPE_CODE (type) == TYPE_CODE_INT) |
6b0d7253 JB |
10438 | { |
10439 | /* GDB allows dereferencing an int. */ | |
10440 | if (expect_type == NULL) | |
10441 | return value_zero (builtin_type (exp->gdbarch)->builtin_int, | |
10442 | lval_memory); | |
10443 | else | |
10444 | { | |
10445 | expect_type = | |
10446 | to_static_fixed_type (ada_aligned_type (expect_type)); | |
10447 | return value_zero (expect_type, lval_memory); | |
10448 | } | |
10449 | } | |
4c4b4cd2 | 10450 | else |
323e0a4a | 10451 | error (_("Attempt to take contents of a non-pointer value.")); |
4c4b4cd2 | 10452 | } |
0963b4bd | 10453 | arg1 = ada_coerce_ref (arg1); /* FIXME: What is this for?? */ |
df407dfe | 10454 | type = ada_check_typedef (value_type (arg1)); |
d2e4a39e | 10455 | |
96967637 JB |
10456 | if (TYPE_CODE (type) == TYPE_CODE_INT) |
10457 | /* GDB allows dereferencing an int. If we were given | |
10458 | the expect_type, then use that as the target type. | |
10459 | Otherwise, assume that the target type is an int. */ | |
10460 | { | |
10461 | if (expect_type != NULL) | |
10462 | return ada_value_ind (value_cast (lookup_pointer_type (expect_type), | |
10463 | arg1)); | |
10464 | else | |
10465 | return value_at_lazy (builtin_type (exp->gdbarch)->builtin_int, | |
10466 | (CORE_ADDR) value_as_address (arg1)); | |
10467 | } | |
6b0d7253 | 10468 | |
4c4b4cd2 PH |
10469 | if (ada_is_array_descriptor_type (type)) |
10470 | /* GDB allows dereferencing GNAT array descriptors. */ | |
10471 | return ada_coerce_to_simple_array (arg1); | |
14f9c5c9 | 10472 | else |
4c4b4cd2 | 10473 | return ada_value_ind (arg1); |
14f9c5c9 AS |
10474 | |
10475 | case STRUCTOP_STRUCT: | |
10476 | tem = longest_to_int (exp->elts[pc + 1].longconst); | |
10477 | (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); | |
10478 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
10479 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 10480 | goto nosideret; |
14f9c5c9 | 10481 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 10482 | { |
df407dfe | 10483 | struct type *type1 = value_type (arg1); |
5b4ee69b | 10484 | |
76a01679 JB |
10485 | if (ada_is_tagged_type (type1, 1)) |
10486 | { | |
10487 | type = ada_lookup_struct_elt_type (type1, | |
10488 | &exp->elts[pc + 2].string, | |
10489 | 1, 1, NULL); | |
10490 | if (type == NULL) | |
10491 | /* In this case, we assume that the field COULD exist | |
10492 | in some extension of the type. Return an object of | |
10493 | "type" void, which will match any formal | |
0963b4bd | 10494 | (see ada_type_match). */ |
30b15541 UW |
10495 | return value_zero (builtin_type (exp->gdbarch)->builtin_void, |
10496 | lval_memory); | |
76a01679 JB |
10497 | } |
10498 | else | |
10499 | type = | |
10500 | ada_lookup_struct_elt_type (type1, &exp->elts[pc + 2].string, 1, | |
10501 | 0, NULL); | |
10502 | ||
10503 | return value_zero (ada_aligned_type (type), lval_memory); | |
10504 | } | |
14f9c5c9 | 10505 | else |
284614f0 JB |
10506 | arg1 = ada_value_struct_elt (arg1, &exp->elts[pc + 2].string, 0); |
10507 | arg1 = unwrap_value (arg1); | |
10508 | return ada_to_fixed_value (arg1); | |
10509 | ||
14f9c5c9 | 10510 | case OP_TYPE: |
4c4b4cd2 PH |
10511 | /* The value is not supposed to be used. This is here to make it |
10512 | easier to accommodate expressions that contain types. */ | |
14f9c5c9 AS |
10513 | (*pos) += 2; |
10514 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 10515 | goto nosideret; |
14f9c5c9 | 10516 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
a6cfbe68 | 10517 | return allocate_value (exp->elts[pc + 1].type); |
14f9c5c9 | 10518 | else |
323e0a4a | 10519 | error (_("Attempt to use a type name as an expression")); |
52ce6436 PH |
10520 | |
10521 | case OP_AGGREGATE: | |
10522 | case OP_CHOICES: | |
10523 | case OP_OTHERS: | |
10524 | case OP_DISCRETE_RANGE: | |
10525 | case OP_POSITIONAL: | |
10526 | case OP_NAME: | |
10527 | if (noside == EVAL_NORMAL) | |
10528 | switch (op) | |
10529 | { | |
10530 | case OP_NAME: | |
10531 | error (_("Undefined name, ambiguous name, or renaming used in " | |
e1d5a0d2 | 10532 | "component association: %s."), &exp->elts[pc+2].string); |
52ce6436 PH |
10533 | case OP_AGGREGATE: |
10534 | error (_("Aggregates only allowed on the right of an assignment")); | |
10535 | default: | |
0963b4bd MS |
10536 | internal_error (__FILE__, __LINE__, |
10537 | _("aggregate apparently mangled")); | |
52ce6436 PH |
10538 | } |
10539 | ||
10540 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
10541 | *pos += oplen - 1; | |
10542 | for (tem = 0; tem < nargs; tem += 1) | |
10543 | ada_evaluate_subexp (NULL, exp, pos, noside); | |
10544 | goto nosideret; | |
14f9c5c9 AS |
10545 | } |
10546 | ||
10547 | nosideret: | |
22601c15 | 10548 | return value_from_longest (builtin_type (exp->gdbarch)->builtin_int, 1); |
14f9c5c9 | 10549 | } |
14f9c5c9 | 10550 | \f |
d2e4a39e | 10551 | |
4c4b4cd2 | 10552 | /* Fixed point */ |
14f9c5c9 AS |
10553 | |
10554 | /* If TYPE encodes an Ada fixed-point type, return the suffix of the | |
10555 | type name that encodes the 'small and 'delta information. | |
4c4b4cd2 | 10556 | Otherwise, return NULL. */ |
14f9c5c9 | 10557 | |
d2e4a39e | 10558 | static const char * |
ebf56fd3 | 10559 | fixed_type_info (struct type *type) |
14f9c5c9 | 10560 | { |
d2e4a39e | 10561 | const char *name = ada_type_name (type); |
14f9c5c9 AS |
10562 | enum type_code code = (type == NULL) ? TYPE_CODE_UNDEF : TYPE_CODE (type); |
10563 | ||
d2e4a39e AS |
10564 | if ((code == TYPE_CODE_INT || code == TYPE_CODE_RANGE) && name != NULL) |
10565 | { | |
14f9c5c9 | 10566 | const char *tail = strstr (name, "___XF_"); |
5b4ee69b | 10567 | |
14f9c5c9 | 10568 | if (tail == NULL) |
4c4b4cd2 | 10569 | return NULL; |
d2e4a39e | 10570 | else |
4c4b4cd2 | 10571 | return tail + 5; |
14f9c5c9 AS |
10572 | } |
10573 | else if (code == TYPE_CODE_RANGE && TYPE_TARGET_TYPE (type) != type) | |
10574 | return fixed_type_info (TYPE_TARGET_TYPE (type)); | |
10575 | else | |
10576 | return NULL; | |
10577 | } | |
10578 | ||
4c4b4cd2 | 10579 | /* Returns non-zero iff TYPE represents an Ada fixed-point type. */ |
14f9c5c9 AS |
10580 | |
10581 | int | |
ebf56fd3 | 10582 | ada_is_fixed_point_type (struct type *type) |
14f9c5c9 AS |
10583 | { |
10584 | return fixed_type_info (type) != NULL; | |
10585 | } | |
10586 | ||
4c4b4cd2 PH |
10587 | /* Return non-zero iff TYPE represents a System.Address type. */ |
10588 | ||
10589 | int | |
10590 | ada_is_system_address_type (struct type *type) | |
10591 | { | |
10592 | return (TYPE_NAME (type) | |
10593 | && strcmp (TYPE_NAME (type), "system__address") == 0); | |
10594 | } | |
10595 | ||
14f9c5c9 AS |
10596 | /* Assuming that TYPE is the representation of an Ada fixed-point |
10597 | type, return its delta, or -1 if the type is malformed and the | |
4c4b4cd2 | 10598 | delta cannot be determined. */ |
14f9c5c9 AS |
10599 | |
10600 | DOUBLEST | |
ebf56fd3 | 10601 | ada_delta (struct type *type) |
14f9c5c9 AS |
10602 | { |
10603 | const char *encoding = fixed_type_info (type); | |
facc390f | 10604 | DOUBLEST num, den; |
14f9c5c9 | 10605 | |
facc390f JB |
10606 | /* Strictly speaking, num and den are encoded as integer. However, |
10607 | they may not fit into a long, and they will have to be converted | |
10608 | to DOUBLEST anyway. So scan them as DOUBLEST. */ | |
10609 | if (sscanf (encoding, "_%" DOUBLEST_SCAN_FORMAT "_%" DOUBLEST_SCAN_FORMAT, | |
10610 | &num, &den) < 2) | |
14f9c5c9 | 10611 | return -1.0; |
d2e4a39e | 10612 | else |
facc390f | 10613 | return num / den; |
14f9c5c9 AS |
10614 | } |
10615 | ||
10616 | /* Assuming that ada_is_fixed_point_type (TYPE), return the scaling | |
4c4b4cd2 | 10617 | factor ('SMALL value) associated with the type. */ |
14f9c5c9 AS |
10618 | |
10619 | static DOUBLEST | |
ebf56fd3 | 10620 | scaling_factor (struct type *type) |
14f9c5c9 AS |
10621 | { |
10622 | const char *encoding = fixed_type_info (type); | |
facc390f | 10623 | DOUBLEST num0, den0, num1, den1; |
14f9c5c9 | 10624 | int n; |
d2e4a39e | 10625 | |
facc390f JB |
10626 | /* Strictly speaking, num's and den's are encoded as integer. However, |
10627 | they may not fit into a long, and they will have to be converted | |
10628 | to DOUBLEST anyway. So scan them as DOUBLEST. */ | |
10629 | n = sscanf (encoding, | |
10630 | "_%" DOUBLEST_SCAN_FORMAT "_%" DOUBLEST_SCAN_FORMAT | |
10631 | "_%" DOUBLEST_SCAN_FORMAT "_%" DOUBLEST_SCAN_FORMAT, | |
10632 | &num0, &den0, &num1, &den1); | |
14f9c5c9 AS |
10633 | |
10634 | if (n < 2) | |
10635 | return 1.0; | |
10636 | else if (n == 4) | |
facc390f | 10637 | return num1 / den1; |
d2e4a39e | 10638 | else |
facc390f | 10639 | return num0 / den0; |
14f9c5c9 AS |
10640 | } |
10641 | ||
10642 | ||
10643 | /* Assuming that X is the representation of a value of fixed-point | |
4c4b4cd2 | 10644 | type TYPE, return its floating-point equivalent. */ |
14f9c5c9 AS |
10645 | |
10646 | DOUBLEST | |
ebf56fd3 | 10647 | ada_fixed_to_float (struct type *type, LONGEST x) |
14f9c5c9 | 10648 | { |
d2e4a39e | 10649 | return (DOUBLEST) x *scaling_factor (type); |
14f9c5c9 AS |
10650 | } |
10651 | ||
4c4b4cd2 PH |
10652 | /* The representation of a fixed-point value of type TYPE |
10653 | corresponding to the value X. */ | |
14f9c5c9 AS |
10654 | |
10655 | LONGEST | |
ebf56fd3 | 10656 | ada_float_to_fixed (struct type *type, DOUBLEST x) |
14f9c5c9 AS |
10657 | { |
10658 | return (LONGEST) (x / scaling_factor (type) + 0.5); | |
10659 | } | |
10660 | ||
14f9c5c9 | 10661 | \f |
d2e4a39e | 10662 | |
4c4b4cd2 | 10663 | /* Range types */ |
14f9c5c9 AS |
10664 | |
10665 | /* Scan STR beginning at position K for a discriminant name, and | |
10666 | return the value of that discriminant field of DVAL in *PX. If | |
10667 | PNEW_K is not null, put the position of the character beyond the | |
10668 | name scanned in *PNEW_K. Return 1 if successful; return 0 and do | |
4c4b4cd2 | 10669 | not alter *PX and *PNEW_K if unsuccessful. */ |
14f9c5c9 AS |
10670 | |
10671 | static int | |
07d8f827 | 10672 | scan_discrim_bound (char *str, int k, struct value *dval, LONGEST * px, |
76a01679 | 10673 | int *pnew_k) |
14f9c5c9 AS |
10674 | { |
10675 | static char *bound_buffer = NULL; | |
10676 | static size_t bound_buffer_len = 0; | |
10677 | char *bound; | |
10678 | char *pend; | |
d2e4a39e | 10679 | struct value *bound_val; |
14f9c5c9 AS |
10680 | |
10681 | if (dval == NULL || str == NULL || str[k] == '\0') | |
10682 | return 0; | |
10683 | ||
d2e4a39e | 10684 | pend = strstr (str + k, "__"); |
14f9c5c9 AS |
10685 | if (pend == NULL) |
10686 | { | |
d2e4a39e | 10687 | bound = str + k; |
14f9c5c9 AS |
10688 | k += strlen (bound); |
10689 | } | |
d2e4a39e | 10690 | else |
14f9c5c9 | 10691 | { |
d2e4a39e | 10692 | GROW_VECT (bound_buffer, bound_buffer_len, pend - (str + k) + 1); |
14f9c5c9 | 10693 | bound = bound_buffer; |
d2e4a39e AS |
10694 | strncpy (bound_buffer, str + k, pend - (str + k)); |
10695 | bound[pend - (str + k)] = '\0'; | |
10696 | k = pend - str; | |
14f9c5c9 | 10697 | } |
d2e4a39e | 10698 | |
df407dfe | 10699 | bound_val = ada_search_struct_field (bound, dval, 0, value_type (dval)); |
14f9c5c9 AS |
10700 | if (bound_val == NULL) |
10701 | return 0; | |
10702 | ||
10703 | *px = value_as_long (bound_val); | |
10704 | if (pnew_k != NULL) | |
10705 | *pnew_k = k; | |
10706 | return 1; | |
10707 | } | |
10708 | ||
10709 | /* Value of variable named NAME in the current environment. If | |
10710 | no such variable found, then if ERR_MSG is null, returns 0, and | |
4c4b4cd2 PH |
10711 | otherwise causes an error with message ERR_MSG. */ |
10712 | ||
d2e4a39e AS |
10713 | static struct value * |
10714 | get_var_value (char *name, char *err_msg) | |
14f9c5c9 | 10715 | { |
4c4b4cd2 | 10716 | struct ada_symbol_info *syms; |
14f9c5c9 AS |
10717 | int nsyms; |
10718 | ||
4c4b4cd2 | 10719 | nsyms = ada_lookup_symbol_list (name, get_selected_block (0), VAR_DOMAIN, |
4eeaa230 | 10720 | &syms); |
14f9c5c9 AS |
10721 | |
10722 | if (nsyms != 1) | |
10723 | { | |
10724 | if (err_msg == NULL) | |
4c4b4cd2 | 10725 | return 0; |
14f9c5c9 | 10726 | else |
8a3fe4f8 | 10727 | error (("%s"), err_msg); |
14f9c5c9 AS |
10728 | } |
10729 | ||
4c4b4cd2 | 10730 | return value_of_variable (syms[0].sym, syms[0].block); |
14f9c5c9 | 10731 | } |
d2e4a39e | 10732 | |
14f9c5c9 | 10733 | /* Value of integer variable named NAME in the current environment. If |
4c4b4cd2 PH |
10734 | no such variable found, returns 0, and sets *FLAG to 0. If |
10735 | successful, sets *FLAG to 1. */ | |
10736 | ||
14f9c5c9 | 10737 | LONGEST |
4c4b4cd2 | 10738 | get_int_var_value (char *name, int *flag) |
14f9c5c9 | 10739 | { |
4c4b4cd2 | 10740 | struct value *var_val = get_var_value (name, 0); |
d2e4a39e | 10741 | |
14f9c5c9 AS |
10742 | if (var_val == 0) |
10743 | { | |
10744 | if (flag != NULL) | |
4c4b4cd2 | 10745 | *flag = 0; |
14f9c5c9 AS |
10746 | return 0; |
10747 | } | |
10748 | else | |
10749 | { | |
10750 | if (flag != NULL) | |
4c4b4cd2 | 10751 | *flag = 1; |
14f9c5c9 AS |
10752 | return value_as_long (var_val); |
10753 | } | |
10754 | } | |
d2e4a39e | 10755 | |
14f9c5c9 AS |
10756 | |
10757 | /* Return a range type whose base type is that of the range type named | |
10758 | NAME in the current environment, and whose bounds are calculated | |
4c4b4cd2 | 10759 | from NAME according to the GNAT range encoding conventions. |
1ce677a4 UW |
10760 | Extract discriminant values, if needed, from DVAL. ORIG_TYPE is the |
10761 | corresponding range type from debug information; fall back to using it | |
10762 | if symbol lookup fails. If a new type must be created, allocate it | |
10763 | like ORIG_TYPE was. The bounds information, in general, is encoded | |
10764 | in NAME, the base type given in the named range type. */ | |
14f9c5c9 | 10765 | |
d2e4a39e | 10766 | static struct type * |
28c85d6c | 10767 | to_fixed_range_type (struct type *raw_type, struct value *dval) |
14f9c5c9 | 10768 | { |
0d5cff50 | 10769 | const char *name; |
14f9c5c9 | 10770 | struct type *base_type; |
d2e4a39e | 10771 | char *subtype_info; |
14f9c5c9 | 10772 | |
28c85d6c JB |
10773 | gdb_assert (raw_type != NULL); |
10774 | gdb_assert (TYPE_NAME (raw_type) != NULL); | |
dddfab26 | 10775 | |
1ce677a4 | 10776 | if (TYPE_CODE (raw_type) == TYPE_CODE_RANGE) |
14f9c5c9 AS |
10777 | base_type = TYPE_TARGET_TYPE (raw_type); |
10778 | else | |
10779 | base_type = raw_type; | |
10780 | ||
28c85d6c | 10781 | name = TYPE_NAME (raw_type); |
14f9c5c9 AS |
10782 | subtype_info = strstr (name, "___XD"); |
10783 | if (subtype_info == NULL) | |
690cc4eb | 10784 | { |
43bbcdc2 PH |
10785 | LONGEST L = ada_discrete_type_low_bound (raw_type); |
10786 | LONGEST U = ada_discrete_type_high_bound (raw_type); | |
5b4ee69b | 10787 | |
690cc4eb PH |
10788 | if (L < INT_MIN || U > INT_MAX) |
10789 | return raw_type; | |
10790 | else | |
28c85d6c | 10791 | return create_range_type (alloc_type_copy (raw_type), raw_type, |
43bbcdc2 PH |
10792 | ada_discrete_type_low_bound (raw_type), |
10793 | ada_discrete_type_high_bound (raw_type)); | |
690cc4eb | 10794 | } |
14f9c5c9 AS |
10795 | else |
10796 | { | |
10797 | static char *name_buf = NULL; | |
10798 | static size_t name_len = 0; | |
10799 | int prefix_len = subtype_info - name; | |
10800 | LONGEST L, U; | |
10801 | struct type *type; | |
10802 | char *bounds_str; | |
10803 | int n; | |
10804 | ||
10805 | GROW_VECT (name_buf, name_len, prefix_len + 5); | |
10806 | strncpy (name_buf, name, prefix_len); | |
10807 | name_buf[prefix_len] = '\0'; | |
10808 | ||
10809 | subtype_info += 5; | |
10810 | bounds_str = strchr (subtype_info, '_'); | |
10811 | n = 1; | |
10812 | ||
d2e4a39e | 10813 | if (*subtype_info == 'L') |
4c4b4cd2 PH |
10814 | { |
10815 | if (!ada_scan_number (bounds_str, n, &L, &n) | |
10816 | && !scan_discrim_bound (bounds_str, n, dval, &L, &n)) | |
10817 | return raw_type; | |
10818 | if (bounds_str[n] == '_') | |
10819 | n += 2; | |
0963b4bd | 10820 | else if (bounds_str[n] == '.') /* FIXME? SGI Workshop kludge. */ |
4c4b4cd2 PH |
10821 | n += 1; |
10822 | subtype_info += 1; | |
10823 | } | |
d2e4a39e | 10824 | else |
4c4b4cd2 PH |
10825 | { |
10826 | int ok; | |
5b4ee69b | 10827 | |
4c4b4cd2 PH |
10828 | strcpy (name_buf + prefix_len, "___L"); |
10829 | L = get_int_var_value (name_buf, &ok); | |
10830 | if (!ok) | |
10831 | { | |
323e0a4a | 10832 | lim_warning (_("Unknown lower bound, using 1.")); |
4c4b4cd2 PH |
10833 | L = 1; |
10834 | } | |
10835 | } | |
14f9c5c9 | 10836 | |
d2e4a39e | 10837 | if (*subtype_info == 'U') |
4c4b4cd2 PH |
10838 | { |
10839 | if (!ada_scan_number (bounds_str, n, &U, &n) | |
10840 | && !scan_discrim_bound (bounds_str, n, dval, &U, &n)) | |
10841 | return raw_type; | |
10842 | } | |
d2e4a39e | 10843 | else |
4c4b4cd2 PH |
10844 | { |
10845 | int ok; | |
5b4ee69b | 10846 | |
4c4b4cd2 PH |
10847 | strcpy (name_buf + prefix_len, "___U"); |
10848 | U = get_int_var_value (name_buf, &ok); | |
10849 | if (!ok) | |
10850 | { | |
323e0a4a | 10851 | lim_warning (_("Unknown upper bound, using %ld."), (long) L); |
4c4b4cd2 PH |
10852 | U = L; |
10853 | } | |
10854 | } | |
14f9c5c9 | 10855 | |
28c85d6c | 10856 | type = create_range_type (alloc_type_copy (raw_type), base_type, L, U); |
d2e4a39e | 10857 | TYPE_NAME (type) = name; |
14f9c5c9 AS |
10858 | return type; |
10859 | } | |
10860 | } | |
10861 | ||
4c4b4cd2 PH |
10862 | /* True iff NAME is the name of a range type. */ |
10863 | ||
14f9c5c9 | 10864 | int |
d2e4a39e | 10865 | ada_is_range_type_name (const char *name) |
14f9c5c9 AS |
10866 | { |
10867 | return (name != NULL && strstr (name, "___XD")); | |
d2e4a39e | 10868 | } |
14f9c5c9 | 10869 | \f |
d2e4a39e | 10870 | |
4c4b4cd2 PH |
10871 | /* Modular types */ |
10872 | ||
10873 | /* True iff TYPE is an Ada modular type. */ | |
14f9c5c9 | 10874 | |
14f9c5c9 | 10875 | int |
d2e4a39e | 10876 | ada_is_modular_type (struct type *type) |
14f9c5c9 | 10877 | { |
18af8284 | 10878 | struct type *subranged_type = get_base_type (type); |
14f9c5c9 AS |
10879 | |
10880 | return (subranged_type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE | |
690cc4eb | 10881 | && TYPE_CODE (subranged_type) == TYPE_CODE_INT |
4c4b4cd2 | 10882 | && TYPE_UNSIGNED (subranged_type)); |
14f9c5c9 AS |
10883 | } |
10884 | ||
4c4b4cd2 PH |
10885 | /* Assuming ada_is_modular_type (TYPE), the modulus of TYPE. */ |
10886 | ||
61ee279c | 10887 | ULONGEST |
0056e4d5 | 10888 | ada_modulus (struct type *type) |
14f9c5c9 | 10889 | { |
43bbcdc2 | 10890 | return (ULONGEST) TYPE_HIGH_BOUND (type) + 1; |
14f9c5c9 | 10891 | } |
d2e4a39e | 10892 | \f |
f7f9143b JB |
10893 | |
10894 | /* Ada exception catchpoint support: | |
10895 | --------------------------------- | |
10896 | ||
10897 | We support 3 kinds of exception catchpoints: | |
10898 | . catchpoints on Ada exceptions | |
10899 | . catchpoints on unhandled Ada exceptions | |
10900 | . catchpoints on failed assertions | |
10901 | ||
10902 | Exceptions raised during failed assertions, or unhandled exceptions | |
10903 | could perfectly be caught with the general catchpoint on Ada exceptions. | |
10904 | However, we can easily differentiate these two special cases, and having | |
10905 | the option to distinguish these two cases from the rest can be useful | |
10906 | to zero-in on certain situations. | |
10907 | ||
10908 | Exception catchpoints are a specialized form of breakpoint, | |
10909 | since they rely on inserting breakpoints inside known routines | |
10910 | of the GNAT runtime. The implementation therefore uses a standard | |
10911 | breakpoint structure of the BP_BREAKPOINT type, but with its own set | |
10912 | of breakpoint_ops. | |
10913 | ||
0259addd JB |
10914 | Support in the runtime for exception catchpoints have been changed |
10915 | a few times already, and these changes affect the implementation | |
10916 | of these catchpoints. In order to be able to support several | |
10917 | variants of the runtime, we use a sniffer that will determine | |
28010a5d | 10918 | the runtime variant used by the program being debugged. */ |
f7f9143b JB |
10919 | |
10920 | /* The different types of catchpoints that we introduced for catching | |
10921 | Ada exceptions. */ | |
10922 | ||
10923 | enum exception_catchpoint_kind | |
10924 | { | |
10925 | ex_catch_exception, | |
10926 | ex_catch_exception_unhandled, | |
10927 | ex_catch_assert | |
10928 | }; | |
10929 | ||
3d0b0fa3 JB |
10930 | /* Ada's standard exceptions. */ |
10931 | ||
10932 | static char *standard_exc[] = { | |
10933 | "constraint_error", | |
10934 | "program_error", | |
10935 | "storage_error", | |
10936 | "tasking_error" | |
10937 | }; | |
10938 | ||
0259addd JB |
10939 | typedef CORE_ADDR (ada_unhandled_exception_name_addr_ftype) (void); |
10940 | ||
10941 | /* A structure that describes how to support exception catchpoints | |
10942 | for a given executable. */ | |
10943 | ||
10944 | struct exception_support_info | |
10945 | { | |
10946 | /* The name of the symbol to break on in order to insert | |
10947 | a catchpoint on exceptions. */ | |
10948 | const char *catch_exception_sym; | |
10949 | ||
10950 | /* The name of the symbol to break on in order to insert | |
10951 | a catchpoint on unhandled exceptions. */ | |
10952 | const char *catch_exception_unhandled_sym; | |
10953 | ||
10954 | /* The name of the symbol to break on in order to insert | |
10955 | a catchpoint on failed assertions. */ | |
10956 | const char *catch_assert_sym; | |
10957 | ||
10958 | /* Assuming that the inferior just triggered an unhandled exception | |
10959 | catchpoint, this function is responsible for returning the address | |
10960 | in inferior memory where the name of that exception is stored. | |
10961 | Return zero if the address could not be computed. */ | |
10962 | ada_unhandled_exception_name_addr_ftype *unhandled_exception_name_addr; | |
10963 | }; | |
10964 | ||
10965 | static CORE_ADDR ada_unhandled_exception_name_addr (void); | |
10966 | static CORE_ADDR ada_unhandled_exception_name_addr_from_raise (void); | |
10967 | ||
10968 | /* The following exception support info structure describes how to | |
10969 | implement exception catchpoints with the latest version of the | |
10970 | Ada runtime (as of 2007-03-06). */ | |
10971 | ||
10972 | static const struct exception_support_info default_exception_support_info = | |
10973 | { | |
10974 | "__gnat_debug_raise_exception", /* catch_exception_sym */ | |
10975 | "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */ | |
10976 | "__gnat_debug_raise_assert_failure", /* catch_assert_sym */ | |
10977 | ada_unhandled_exception_name_addr | |
10978 | }; | |
10979 | ||
10980 | /* The following exception support info structure describes how to | |
10981 | implement exception catchpoints with a slightly older version | |
10982 | of the Ada runtime. */ | |
10983 | ||
10984 | static const struct exception_support_info exception_support_info_fallback = | |
10985 | { | |
10986 | "__gnat_raise_nodefer_with_msg", /* catch_exception_sym */ | |
10987 | "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */ | |
10988 | "system__assertions__raise_assert_failure", /* catch_assert_sym */ | |
10989 | ada_unhandled_exception_name_addr_from_raise | |
10990 | }; | |
10991 | ||
f17011e0 JB |
10992 | /* Return nonzero if we can detect the exception support routines |
10993 | described in EINFO. | |
10994 | ||
10995 | This function errors out if an abnormal situation is detected | |
10996 | (for instance, if we find the exception support routines, but | |
10997 | that support is found to be incomplete). */ | |
10998 | ||
10999 | static int | |
11000 | ada_has_this_exception_support (const struct exception_support_info *einfo) | |
11001 | { | |
11002 | struct symbol *sym; | |
11003 | ||
11004 | /* The symbol we're looking up is provided by a unit in the GNAT runtime | |
11005 | that should be compiled with debugging information. As a result, we | |
11006 | expect to find that symbol in the symtabs. */ | |
11007 | ||
11008 | sym = standard_lookup (einfo->catch_exception_sym, NULL, VAR_DOMAIN); | |
11009 | if (sym == NULL) | |
a6af7abe JB |
11010 | { |
11011 | /* Perhaps we did not find our symbol because the Ada runtime was | |
11012 | compiled without debugging info, or simply stripped of it. | |
11013 | It happens on some GNU/Linux distributions for instance, where | |
11014 | users have to install a separate debug package in order to get | |
11015 | the runtime's debugging info. In that situation, let the user | |
11016 | know why we cannot insert an Ada exception catchpoint. | |
11017 | ||
11018 | Note: Just for the purpose of inserting our Ada exception | |
11019 | catchpoint, we could rely purely on the associated minimal symbol. | |
11020 | But we would be operating in degraded mode anyway, since we are | |
11021 | still lacking the debugging info needed later on to extract | |
11022 | the name of the exception being raised (this name is printed in | |
11023 | the catchpoint message, and is also used when trying to catch | |
11024 | a specific exception). We do not handle this case for now. */ | |
11025 | if (lookup_minimal_symbol (einfo->catch_exception_sym, NULL, NULL)) | |
11026 | error (_("Your Ada runtime appears to be missing some debugging " | |
11027 | "information.\nCannot insert Ada exception catchpoint " | |
11028 | "in this configuration.")); | |
11029 | ||
11030 | return 0; | |
11031 | } | |
f17011e0 JB |
11032 | |
11033 | /* Make sure that the symbol we found corresponds to a function. */ | |
11034 | ||
11035 | if (SYMBOL_CLASS (sym) != LOC_BLOCK) | |
11036 | error (_("Symbol \"%s\" is not a function (class = %d)"), | |
11037 | SYMBOL_LINKAGE_NAME (sym), SYMBOL_CLASS (sym)); | |
11038 | ||
11039 | return 1; | |
11040 | } | |
11041 | ||
0259addd JB |
11042 | /* Inspect the Ada runtime and determine which exception info structure |
11043 | should be used to provide support for exception catchpoints. | |
11044 | ||
3eecfa55 JB |
11045 | This function will always set the per-inferior exception_info, |
11046 | or raise an error. */ | |
0259addd JB |
11047 | |
11048 | static void | |
11049 | ada_exception_support_info_sniffer (void) | |
11050 | { | |
3eecfa55 | 11051 | struct ada_inferior_data *data = get_ada_inferior_data (current_inferior ()); |
0259addd JB |
11052 | |
11053 | /* If the exception info is already known, then no need to recompute it. */ | |
3eecfa55 | 11054 | if (data->exception_info != NULL) |
0259addd JB |
11055 | return; |
11056 | ||
11057 | /* Check the latest (default) exception support info. */ | |
f17011e0 | 11058 | if (ada_has_this_exception_support (&default_exception_support_info)) |
0259addd | 11059 | { |
3eecfa55 | 11060 | data->exception_info = &default_exception_support_info; |
0259addd JB |
11061 | return; |
11062 | } | |
11063 | ||
11064 | /* Try our fallback exception suport info. */ | |
f17011e0 | 11065 | if (ada_has_this_exception_support (&exception_support_info_fallback)) |
0259addd | 11066 | { |
3eecfa55 | 11067 | data->exception_info = &exception_support_info_fallback; |
0259addd JB |
11068 | return; |
11069 | } | |
11070 | ||
11071 | /* Sometimes, it is normal for us to not be able to find the routine | |
11072 | we are looking for. This happens when the program is linked with | |
11073 | the shared version of the GNAT runtime, and the program has not been | |
11074 | started yet. Inform the user of these two possible causes if | |
11075 | applicable. */ | |
11076 | ||
ccefe4c4 | 11077 | if (ada_update_initial_language (language_unknown) != language_ada) |
0259addd JB |
11078 | error (_("Unable to insert catchpoint. Is this an Ada main program?")); |
11079 | ||
11080 | /* If the symbol does not exist, then check that the program is | |
11081 | already started, to make sure that shared libraries have been | |
11082 | loaded. If it is not started, this may mean that the symbol is | |
11083 | in a shared library. */ | |
11084 | ||
11085 | if (ptid_get_pid (inferior_ptid) == 0) | |
11086 | error (_("Unable to insert catchpoint. Try to start the program first.")); | |
11087 | ||
11088 | /* At this point, we know that we are debugging an Ada program and | |
11089 | that the inferior has been started, but we still are not able to | |
0963b4bd | 11090 | find the run-time symbols. That can mean that we are in |
0259addd JB |
11091 | configurable run time mode, or that a-except as been optimized |
11092 | out by the linker... In any case, at this point it is not worth | |
11093 | supporting this feature. */ | |
11094 | ||
7dda8cff | 11095 | error (_("Cannot insert Ada exception catchpoints in this configuration.")); |
0259addd JB |
11096 | } |
11097 | ||
f7f9143b JB |
11098 | /* True iff FRAME is very likely to be that of a function that is |
11099 | part of the runtime system. This is all very heuristic, but is | |
11100 | intended to be used as advice as to what frames are uninteresting | |
11101 | to most users. */ | |
11102 | ||
11103 | static int | |
11104 | is_known_support_routine (struct frame_info *frame) | |
11105 | { | |
4ed6b5be | 11106 | struct symtab_and_line sal; |
0d5cff50 | 11107 | const char *func_name; |
692465f1 | 11108 | enum language func_lang; |
f7f9143b | 11109 | int i; |
f35a17b5 | 11110 | const char *fullname; |
f7f9143b | 11111 | |
4ed6b5be JB |
11112 | /* If this code does not have any debugging information (no symtab), |
11113 | This cannot be any user code. */ | |
f7f9143b | 11114 | |
4ed6b5be | 11115 | find_frame_sal (frame, &sal); |
f7f9143b JB |
11116 | if (sal.symtab == NULL) |
11117 | return 1; | |
11118 | ||
4ed6b5be JB |
11119 | /* If there is a symtab, but the associated source file cannot be |
11120 | located, then assume this is not user code: Selecting a frame | |
11121 | for which we cannot display the code would not be very helpful | |
11122 | for the user. This should also take care of case such as VxWorks | |
11123 | where the kernel has some debugging info provided for a few units. */ | |
f7f9143b | 11124 | |
f35a17b5 JK |
11125 | fullname = symtab_to_fullname (sal.symtab); |
11126 | if (access (fullname, R_OK) != 0) | |
f7f9143b JB |
11127 | return 1; |
11128 | ||
4ed6b5be JB |
11129 | /* Check the unit filename againt the Ada runtime file naming. |
11130 | We also check the name of the objfile against the name of some | |
11131 | known system libraries that sometimes come with debugging info | |
11132 | too. */ | |
11133 | ||
f7f9143b JB |
11134 | for (i = 0; known_runtime_file_name_patterns[i] != NULL; i += 1) |
11135 | { | |
11136 | re_comp (known_runtime_file_name_patterns[i]); | |
f69c91ad | 11137 | if (re_exec (lbasename (sal.symtab->filename))) |
f7f9143b | 11138 | return 1; |
4ed6b5be JB |
11139 | if (sal.symtab->objfile != NULL |
11140 | && re_exec (sal.symtab->objfile->name)) | |
11141 | return 1; | |
f7f9143b JB |
11142 | } |
11143 | ||
4ed6b5be | 11144 | /* Check whether the function is a GNAT-generated entity. */ |
f7f9143b | 11145 | |
e9e07ba6 | 11146 | find_frame_funname (frame, &func_name, &func_lang, NULL); |
f7f9143b JB |
11147 | if (func_name == NULL) |
11148 | return 1; | |
11149 | ||
11150 | for (i = 0; known_auxiliary_function_name_patterns[i] != NULL; i += 1) | |
11151 | { | |
11152 | re_comp (known_auxiliary_function_name_patterns[i]); | |
11153 | if (re_exec (func_name)) | |
11154 | return 1; | |
11155 | } | |
11156 | ||
11157 | return 0; | |
11158 | } | |
11159 | ||
11160 | /* Find the first frame that contains debugging information and that is not | |
11161 | part of the Ada run-time, starting from FI and moving upward. */ | |
11162 | ||
0ef643c8 | 11163 | void |
f7f9143b JB |
11164 | ada_find_printable_frame (struct frame_info *fi) |
11165 | { | |
11166 | for (; fi != NULL; fi = get_prev_frame (fi)) | |
11167 | { | |
11168 | if (!is_known_support_routine (fi)) | |
11169 | { | |
11170 | select_frame (fi); | |
11171 | break; | |
11172 | } | |
11173 | } | |
11174 | ||
11175 | } | |
11176 | ||
11177 | /* Assuming that the inferior just triggered an unhandled exception | |
11178 | catchpoint, return the address in inferior memory where the name | |
11179 | of the exception is stored. | |
11180 | ||
11181 | Return zero if the address could not be computed. */ | |
11182 | ||
11183 | static CORE_ADDR | |
11184 | ada_unhandled_exception_name_addr (void) | |
0259addd JB |
11185 | { |
11186 | return parse_and_eval_address ("e.full_name"); | |
11187 | } | |
11188 | ||
11189 | /* Same as ada_unhandled_exception_name_addr, except that this function | |
11190 | should be used when the inferior uses an older version of the runtime, | |
11191 | where the exception name needs to be extracted from a specific frame | |
11192 | several frames up in the callstack. */ | |
11193 | ||
11194 | static CORE_ADDR | |
11195 | ada_unhandled_exception_name_addr_from_raise (void) | |
f7f9143b JB |
11196 | { |
11197 | int frame_level; | |
11198 | struct frame_info *fi; | |
3eecfa55 | 11199 | struct ada_inferior_data *data = get_ada_inferior_data (current_inferior ()); |
f7f9143b JB |
11200 | |
11201 | /* To determine the name of this exception, we need to select | |
11202 | the frame corresponding to RAISE_SYM_NAME. This frame is | |
11203 | at least 3 levels up, so we simply skip the first 3 frames | |
11204 | without checking the name of their associated function. */ | |
11205 | fi = get_current_frame (); | |
11206 | for (frame_level = 0; frame_level < 3; frame_level += 1) | |
11207 | if (fi != NULL) | |
11208 | fi = get_prev_frame (fi); | |
11209 | ||
11210 | while (fi != NULL) | |
11211 | { | |
0d5cff50 | 11212 | const char *func_name; |
692465f1 JB |
11213 | enum language func_lang; |
11214 | ||
e9e07ba6 | 11215 | find_frame_funname (fi, &func_name, &func_lang, NULL); |
f7f9143b | 11216 | if (func_name != NULL |
3eecfa55 | 11217 | && strcmp (func_name, data->exception_info->catch_exception_sym) == 0) |
f7f9143b JB |
11218 | break; /* We found the frame we were looking for... */ |
11219 | fi = get_prev_frame (fi); | |
11220 | } | |
11221 | ||
11222 | if (fi == NULL) | |
11223 | return 0; | |
11224 | ||
11225 | select_frame (fi); | |
11226 | return parse_and_eval_address ("id.full_name"); | |
11227 | } | |
11228 | ||
11229 | /* Assuming the inferior just triggered an Ada exception catchpoint | |
11230 | (of any type), return the address in inferior memory where the name | |
11231 | of the exception is stored, if applicable. | |
11232 | ||
11233 | Return zero if the address could not be computed, or if not relevant. */ | |
11234 | ||
11235 | static CORE_ADDR | |
11236 | ada_exception_name_addr_1 (enum exception_catchpoint_kind ex, | |
11237 | struct breakpoint *b) | |
11238 | { | |
3eecfa55 JB |
11239 | struct ada_inferior_data *data = get_ada_inferior_data (current_inferior ()); |
11240 | ||
f7f9143b JB |
11241 | switch (ex) |
11242 | { | |
11243 | case ex_catch_exception: | |
11244 | return (parse_and_eval_address ("e.full_name")); | |
11245 | break; | |
11246 | ||
11247 | case ex_catch_exception_unhandled: | |
3eecfa55 | 11248 | return data->exception_info->unhandled_exception_name_addr (); |
f7f9143b JB |
11249 | break; |
11250 | ||
11251 | case ex_catch_assert: | |
11252 | return 0; /* Exception name is not relevant in this case. */ | |
11253 | break; | |
11254 | ||
11255 | default: | |
11256 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
11257 | break; | |
11258 | } | |
11259 | ||
11260 | return 0; /* Should never be reached. */ | |
11261 | } | |
11262 | ||
11263 | /* Same as ada_exception_name_addr_1, except that it intercepts and contains | |
11264 | any error that ada_exception_name_addr_1 might cause to be thrown. | |
11265 | When an error is intercepted, a warning with the error message is printed, | |
11266 | and zero is returned. */ | |
11267 | ||
11268 | static CORE_ADDR | |
11269 | ada_exception_name_addr (enum exception_catchpoint_kind ex, | |
11270 | struct breakpoint *b) | |
11271 | { | |
bfd189b1 | 11272 | volatile struct gdb_exception e; |
f7f9143b JB |
11273 | CORE_ADDR result = 0; |
11274 | ||
11275 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
11276 | { | |
11277 | result = ada_exception_name_addr_1 (ex, b); | |
11278 | } | |
11279 | ||
11280 | if (e.reason < 0) | |
11281 | { | |
11282 | warning (_("failed to get exception name: %s"), e.message); | |
11283 | return 0; | |
11284 | } | |
11285 | ||
11286 | return result; | |
11287 | } | |
11288 | ||
28010a5d PA |
11289 | static struct symtab_and_line ada_exception_sal (enum exception_catchpoint_kind, |
11290 | char *, char **, | |
c0a91b2b | 11291 | const struct breakpoint_ops **); |
28010a5d PA |
11292 | static char *ada_exception_catchpoint_cond_string (const char *excep_string); |
11293 | ||
11294 | /* Ada catchpoints. | |
11295 | ||
11296 | In the case of catchpoints on Ada exceptions, the catchpoint will | |
11297 | stop the target on every exception the program throws. When a user | |
11298 | specifies the name of a specific exception, we translate this | |
11299 | request into a condition expression (in text form), and then parse | |
11300 | it into an expression stored in each of the catchpoint's locations. | |
11301 | We then use this condition to check whether the exception that was | |
11302 | raised is the one the user is interested in. If not, then the | |
11303 | target is resumed again. We store the name of the requested | |
11304 | exception, in order to be able to re-set the condition expression | |
11305 | when symbols change. */ | |
11306 | ||
11307 | /* An instance of this type is used to represent an Ada catchpoint | |
11308 | breakpoint location. It includes a "struct bp_location" as a kind | |
11309 | of base class; users downcast to "struct bp_location *" when | |
11310 | needed. */ | |
11311 | ||
11312 | struct ada_catchpoint_location | |
11313 | { | |
11314 | /* The base class. */ | |
11315 | struct bp_location base; | |
11316 | ||
11317 | /* The condition that checks whether the exception that was raised | |
11318 | is the specific exception the user specified on catchpoint | |
11319 | creation. */ | |
11320 | struct expression *excep_cond_expr; | |
11321 | }; | |
11322 | ||
11323 | /* Implement the DTOR method in the bp_location_ops structure for all | |
11324 | Ada exception catchpoint kinds. */ | |
11325 | ||
11326 | static void | |
11327 | ada_catchpoint_location_dtor (struct bp_location *bl) | |
11328 | { | |
11329 | struct ada_catchpoint_location *al = (struct ada_catchpoint_location *) bl; | |
11330 | ||
11331 | xfree (al->excep_cond_expr); | |
11332 | } | |
11333 | ||
11334 | /* The vtable to be used in Ada catchpoint locations. */ | |
11335 | ||
11336 | static const struct bp_location_ops ada_catchpoint_location_ops = | |
11337 | { | |
11338 | ada_catchpoint_location_dtor | |
11339 | }; | |
11340 | ||
11341 | /* An instance of this type is used to represent an Ada catchpoint. | |
11342 | It includes a "struct breakpoint" as a kind of base class; users | |
11343 | downcast to "struct breakpoint *" when needed. */ | |
11344 | ||
11345 | struct ada_catchpoint | |
11346 | { | |
11347 | /* The base class. */ | |
11348 | struct breakpoint base; | |
11349 | ||
11350 | /* The name of the specific exception the user specified. */ | |
11351 | char *excep_string; | |
11352 | }; | |
11353 | ||
11354 | /* Parse the exception condition string in the context of each of the | |
11355 | catchpoint's locations, and store them for later evaluation. */ | |
11356 | ||
11357 | static void | |
11358 | create_excep_cond_exprs (struct ada_catchpoint *c) | |
11359 | { | |
11360 | struct cleanup *old_chain; | |
11361 | struct bp_location *bl; | |
11362 | char *cond_string; | |
11363 | ||
11364 | /* Nothing to do if there's no specific exception to catch. */ | |
11365 | if (c->excep_string == NULL) | |
11366 | return; | |
11367 | ||
11368 | /* Same if there are no locations... */ | |
11369 | if (c->base.loc == NULL) | |
11370 | return; | |
11371 | ||
11372 | /* Compute the condition expression in text form, from the specific | |
11373 | expection we want to catch. */ | |
11374 | cond_string = ada_exception_catchpoint_cond_string (c->excep_string); | |
11375 | old_chain = make_cleanup (xfree, cond_string); | |
11376 | ||
11377 | /* Iterate over all the catchpoint's locations, and parse an | |
11378 | expression for each. */ | |
11379 | for (bl = c->base.loc; bl != NULL; bl = bl->next) | |
11380 | { | |
11381 | struct ada_catchpoint_location *ada_loc | |
11382 | = (struct ada_catchpoint_location *) bl; | |
11383 | struct expression *exp = NULL; | |
11384 | ||
11385 | if (!bl->shlib_disabled) | |
11386 | { | |
11387 | volatile struct gdb_exception e; | |
11388 | char *s; | |
11389 | ||
11390 | s = cond_string; | |
11391 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
11392 | { | |
1bb9788d TT |
11393 | exp = parse_exp_1 (&s, bl->address, |
11394 | block_for_pc (bl->address), 0); | |
28010a5d PA |
11395 | } |
11396 | if (e.reason < 0) | |
11397 | warning (_("failed to reevaluate internal exception condition " | |
11398 | "for catchpoint %d: %s"), | |
11399 | c->base.number, e.message); | |
11400 | } | |
11401 | ||
11402 | ada_loc->excep_cond_expr = exp; | |
11403 | } | |
11404 | ||
11405 | do_cleanups (old_chain); | |
11406 | } | |
11407 | ||
11408 | /* Implement the DTOR method in the breakpoint_ops structure for all | |
11409 | exception catchpoint kinds. */ | |
11410 | ||
11411 | static void | |
11412 | dtor_exception (enum exception_catchpoint_kind ex, struct breakpoint *b) | |
11413 | { | |
11414 | struct ada_catchpoint *c = (struct ada_catchpoint *) b; | |
11415 | ||
11416 | xfree (c->excep_string); | |
348d480f | 11417 | |
2060206e | 11418 | bkpt_breakpoint_ops.dtor (b); |
28010a5d PA |
11419 | } |
11420 | ||
11421 | /* Implement the ALLOCATE_LOCATION method in the breakpoint_ops | |
11422 | structure for all exception catchpoint kinds. */ | |
11423 | ||
11424 | static struct bp_location * | |
11425 | allocate_location_exception (enum exception_catchpoint_kind ex, | |
11426 | struct breakpoint *self) | |
11427 | { | |
11428 | struct ada_catchpoint_location *loc; | |
11429 | ||
11430 | loc = XNEW (struct ada_catchpoint_location); | |
11431 | init_bp_location (&loc->base, &ada_catchpoint_location_ops, self); | |
11432 | loc->excep_cond_expr = NULL; | |
11433 | return &loc->base; | |
11434 | } | |
11435 | ||
11436 | /* Implement the RE_SET method in the breakpoint_ops structure for all | |
11437 | exception catchpoint kinds. */ | |
11438 | ||
11439 | static void | |
11440 | re_set_exception (enum exception_catchpoint_kind ex, struct breakpoint *b) | |
11441 | { | |
11442 | struct ada_catchpoint *c = (struct ada_catchpoint *) b; | |
11443 | ||
11444 | /* Call the base class's method. This updates the catchpoint's | |
11445 | locations. */ | |
2060206e | 11446 | bkpt_breakpoint_ops.re_set (b); |
28010a5d PA |
11447 | |
11448 | /* Reparse the exception conditional expressions. One for each | |
11449 | location. */ | |
11450 | create_excep_cond_exprs (c); | |
11451 | } | |
11452 | ||
11453 | /* Returns true if we should stop for this breakpoint hit. If the | |
11454 | user specified a specific exception, we only want to cause a stop | |
11455 | if the program thrown that exception. */ | |
11456 | ||
11457 | static int | |
11458 | should_stop_exception (const struct bp_location *bl) | |
11459 | { | |
11460 | struct ada_catchpoint *c = (struct ada_catchpoint *) bl->owner; | |
11461 | const struct ada_catchpoint_location *ada_loc | |
11462 | = (const struct ada_catchpoint_location *) bl; | |
11463 | volatile struct gdb_exception ex; | |
11464 | int stop; | |
11465 | ||
11466 | /* With no specific exception, should always stop. */ | |
11467 | if (c->excep_string == NULL) | |
11468 | return 1; | |
11469 | ||
11470 | if (ada_loc->excep_cond_expr == NULL) | |
11471 | { | |
11472 | /* We will have a NULL expression if back when we were creating | |
11473 | the expressions, this location's had failed to parse. */ | |
11474 | return 1; | |
11475 | } | |
11476 | ||
11477 | stop = 1; | |
11478 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
11479 | { | |
11480 | struct value *mark; | |
11481 | ||
11482 | mark = value_mark (); | |
11483 | stop = value_true (evaluate_expression (ada_loc->excep_cond_expr)); | |
11484 | value_free_to_mark (mark); | |
11485 | } | |
11486 | if (ex.reason < 0) | |
11487 | exception_fprintf (gdb_stderr, ex, | |
11488 | _("Error in testing exception condition:\n")); | |
11489 | return stop; | |
11490 | } | |
11491 | ||
11492 | /* Implement the CHECK_STATUS method in the breakpoint_ops structure | |
11493 | for all exception catchpoint kinds. */ | |
11494 | ||
11495 | static void | |
11496 | check_status_exception (enum exception_catchpoint_kind ex, bpstat bs) | |
11497 | { | |
11498 | bs->stop = should_stop_exception (bs->bp_location_at); | |
11499 | } | |
11500 | ||
f7f9143b JB |
11501 | /* Implement the PRINT_IT method in the breakpoint_ops structure |
11502 | for all exception catchpoint kinds. */ | |
11503 | ||
11504 | static enum print_stop_action | |
348d480f | 11505 | print_it_exception (enum exception_catchpoint_kind ex, bpstat bs) |
f7f9143b | 11506 | { |
79a45e25 | 11507 | struct ui_out *uiout = current_uiout; |
348d480f PA |
11508 | struct breakpoint *b = bs->breakpoint_at; |
11509 | ||
956a9fb9 | 11510 | annotate_catchpoint (b->number); |
f7f9143b | 11511 | |
956a9fb9 | 11512 | if (ui_out_is_mi_like_p (uiout)) |
f7f9143b | 11513 | { |
956a9fb9 JB |
11514 | ui_out_field_string (uiout, "reason", |
11515 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
11516 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
f7f9143b JB |
11517 | } |
11518 | ||
00eb2c4a JB |
11519 | ui_out_text (uiout, |
11520 | b->disposition == disp_del ? "\nTemporary catchpoint " | |
11521 | : "\nCatchpoint "); | |
956a9fb9 JB |
11522 | ui_out_field_int (uiout, "bkptno", b->number); |
11523 | ui_out_text (uiout, ", "); | |
f7f9143b | 11524 | |
f7f9143b JB |
11525 | switch (ex) |
11526 | { | |
11527 | case ex_catch_exception: | |
f7f9143b | 11528 | case ex_catch_exception_unhandled: |
956a9fb9 JB |
11529 | { |
11530 | const CORE_ADDR addr = ada_exception_name_addr (ex, b); | |
11531 | char exception_name[256]; | |
11532 | ||
11533 | if (addr != 0) | |
11534 | { | |
11535 | read_memory (addr, exception_name, sizeof (exception_name) - 1); | |
11536 | exception_name [sizeof (exception_name) - 1] = '\0'; | |
11537 | } | |
11538 | else | |
11539 | { | |
11540 | /* For some reason, we were unable to read the exception | |
11541 | name. This could happen if the Runtime was compiled | |
11542 | without debugging info, for instance. In that case, | |
11543 | just replace the exception name by the generic string | |
11544 | "exception" - it will read as "an exception" in the | |
11545 | notification we are about to print. */ | |
967cff16 | 11546 | memcpy (exception_name, "exception", sizeof ("exception")); |
956a9fb9 JB |
11547 | } |
11548 | /* In the case of unhandled exception breakpoints, we print | |
11549 | the exception name as "unhandled EXCEPTION_NAME", to make | |
11550 | it clearer to the user which kind of catchpoint just got | |
11551 | hit. We used ui_out_text to make sure that this extra | |
11552 | info does not pollute the exception name in the MI case. */ | |
11553 | if (ex == ex_catch_exception_unhandled) | |
11554 | ui_out_text (uiout, "unhandled "); | |
11555 | ui_out_field_string (uiout, "exception-name", exception_name); | |
11556 | } | |
11557 | break; | |
f7f9143b | 11558 | case ex_catch_assert: |
956a9fb9 JB |
11559 | /* In this case, the name of the exception is not really |
11560 | important. Just print "failed assertion" to make it clearer | |
11561 | that his program just hit an assertion-failure catchpoint. | |
11562 | We used ui_out_text because this info does not belong in | |
11563 | the MI output. */ | |
11564 | ui_out_text (uiout, "failed assertion"); | |
11565 | break; | |
f7f9143b | 11566 | } |
956a9fb9 JB |
11567 | ui_out_text (uiout, " at "); |
11568 | ada_find_printable_frame (get_current_frame ()); | |
f7f9143b JB |
11569 | |
11570 | return PRINT_SRC_AND_LOC; | |
11571 | } | |
11572 | ||
11573 | /* Implement the PRINT_ONE method in the breakpoint_ops structure | |
11574 | for all exception catchpoint kinds. */ | |
11575 | ||
11576 | static void | |
11577 | print_one_exception (enum exception_catchpoint_kind ex, | |
a6d9a66e | 11578 | struct breakpoint *b, struct bp_location **last_loc) |
f7f9143b | 11579 | { |
79a45e25 | 11580 | struct ui_out *uiout = current_uiout; |
28010a5d | 11581 | struct ada_catchpoint *c = (struct ada_catchpoint *) b; |
79a45b7d TT |
11582 | struct value_print_options opts; |
11583 | ||
11584 | get_user_print_options (&opts); | |
11585 | if (opts.addressprint) | |
f7f9143b JB |
11586 | { |
11587 | annotate_field (4); | |
5af949e3 | 11588 | ui_out_field_core_addr (uiout, "addr", b->loc->gdbarch, b->loc->address); |
f7f9143b JB |
11589 | } |
11590 | ||
11591 | annotate_field (5); | |
a6d9a66e | 11592 | *last_loc = b->loc; |
f7f9143b JB |
11593 | switch (ex) |
11594 | { | |
11595 | case ex_catch_exception: | |
28010a5d | 11596 | if (c->excep_string != NULL) |
f7f9143b | 11597 | { |
28010a5d PA |
11598 | char *msg = xstrprintf (_("`%s' Ada exception"), c->excep_string); |
11599 | ||
f7f9143b JB |
11600 | ui_out_field_string (uiout, "what", msg); |
11601 | xfree (msg); | |
11602 | } | |
11603 | else | |
11604 | ui_out_field_string (uiout, "what", "all Ada exceptions"); | |
11605 | ||
11606 | break; | |
11607 | ||
11608 | case ex_catch_exception_unhandled: | |
11609 | ui_out_field_string (uiout, "what", "unhandled Ada exceptions"); | |
11610 | break; | |
11611 | ||
11612 | case ex_catch_assert: | |
11613 | ui_out_field_string (uiout, "what", "failed Ada assertions"); | |
11614 | break; | |
11615 | ||
11616 | default: | |
11617 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
11618 | break; | |
11619 | } | |
11620 | } | |
11621 | ||
11622 | /* Implement the PRINT_MENTION method in the breakpoint_ops structure | |
11623 | for all exception catchpoint kinds. */ | |
11624 | ||
11625 | static void | |
11626 | print_mention_exception (enum exception_catchpoint_kind ex, | |
11627 | struct breakpoint *b) | |
11628 | { | |
28010a5d | 11629 | struct ada_catchpoint *c = (struct ada_catchpoint *) b; |
79a45e25 | 11630 | struct ui_out *uiout = current_uiout; |
28010a5d | 11631 | |
00eb2c4a JB |
11632 | ui_out_text (uiout, b->disposition == disp_del ? _("Temporary catchpoint ") |
11633 | : _("Catchpoint ")); | |
11634 | ui_out_field_int (uiout, "bkptno", b->number); | |
11635 | ui_out_text (uiout, ": "); | |
11636 | ||
f7f9143b JB |
11637 | switch (ex) |
11638 | { | |
11639 | case ex_catch_exception: | |
28010a5d | 11640 | if (c->excep_string != NULL) |
00eb2c4a JB |
11641 | { |
11642 | char *info = xstrprintf (_("`%s' Ada exception"), c->excep_string); | |
11643 | struct cleanup *old_chain = make_cleanup (xfree, info); | |
11644 | ||
11645 | ui_out_text (uiout, info); | |
11646 | do_cleanups (old_chain); | |
11647 | } | |
f7f9143b | 11648 | else |
00eb2c4a | 11649 | ui_out_text (uiout, _("all Ada exceptions")); |
f7f9143b JB |
11650 | break; |
11651 | ||
11652 | case ex_catch_exception_unhandled: | |
00eb2c4a | 11653 | ui_out_text (uiout, _("unhandled Ada exceptions")); |
f7f9143b JB |
11654 | break; |
11655 | ||
11656 | case ex_catch_assert: | |
00eb2c4a | 11657 | ui_out_text (uiout, _("failed Ada assertions")); |
f7f9143b JB |
11658 | break; |
11659 | ||
11660 | default: | |
11661 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
11662 | break; | |
11663 | } | |
11664 | } | |
11665 | ||
6149aea9 PA |
11666 | /* Implement the PRINT_RECREATE method in the breakpoint_ops structure |
11667 | for all exception catchpoint kinds. */ | |
11668 | ||
11669 | static void | |
11670 | print_recreate_exception (enum exception_catchpoint_kind ex, | |
11671 | struct breakpoint *b, struct ui_file *fp) | |
11672 | { | |
28010a5d PA |
11673 | struct ada_catchpoint *c = (struct ada_catchpoint *) b; |
11674 | ||
6149aea9 PA |
11675 | switch (ex) |
11676 | { | |
11677 | case ex_catch_exception: | |
11678 | fprintf_filtered (fp, "catch exception"); | |
28010a5d PA |
11679 | if (c->excep_string != NULL) |
11680 | fprintf_filtered (fp, " %s", c->excep_string); | |
6149aea9 PA |
11681 | break; |
11682 | ||
11683 | case ex_catch_exception_unhandled: | |
78076abc | 11684 | fprintf_filtered (fp, "catch exception unhandled"); |
6149aea9 PA |
11685 | break; |
11686 | ||
11687 | case ex_catch_assert: | |
11688 | fprintf_filtered (fp, "catch assert"); | |
11689 | break; | |
11690 | ||
11691 | default: | |
11692 | internal_error (__FILE__, __LINE__, _("unexpected catchpoint type")); | |
11693 | } | |
d9b3f62e | 11694 | print_recreate_thread (b, fp); |
6149aea9 PA |
11695 | } |
11696 | ||
f7f9143b JB |
11697 | /* Virtual table for "catch exception" breakpoints. */ |
11698 | ||
28010a5d PA |
11699 | static void |
11700 | dtor_catch_exception (struct breakpoint *b) | |
11701 | { | |
11702 | dtor_exception (ex_catch_exception, b); | |
11703 | } | |
11704 | ||
11705 | static struct bp_location * | |
11706 | allocate_location_catch_exception (struct breakpoint *self) | |
11707 | { | |
11708 | return allocate_location_exception (ex_catch_exception, self); | |
11709 | } | |
11710 | ||
11711 | static void | |
11712 | re_set_catch_exception (struct breakpoint *b) | |
11713 | { | |
11714 | re_set_exception (ex_catch_exception, b); | |
11715 | } | |
11716 | ||
11717 | static void | |
11718 | check_status_catch_exception (bpstat bs) | |
11719 | { | |
11720 | check_status_exception (ex_catch_exception, bs); | |
11721 | } | |
11722 | ||
f7f9143b | 11723 | static enum print_stop_action |
348d480f | 11724 | print_it_catch_exception (bpstat bs) |
f7f9143b | 11725 | { |
348d480f | 11726 | return print_it_exception (ex_catch_exception, bs); |
f7f9143b JB |
11727 | } |
11728 | ||
11729 | static void | |
a6d9a66e | 11730 | print_one_catch_exception (struct breakpoint *b, struct bp_location **last_loc) |
f7f9143b | 11731 | { |
a6d9a66e | 11732 | print_one_exception (ex_catch_exception, b, last_loc); |
f7f9143b JB |
11733 | } |
11734 | ||
11735 | static void | |
11736 | print_mention_catch_exception (struct breakpoint *b) | |
11737 | { | |
11738 | print_mention_exception (ex_catch_exception, b); | |
11739 | } | |
11740 | ||
6149aea9 PA |
11741 | static void |
11742 | print_recreate_catch_exception (struct breakpoint *b, struct ui_file *fp) | |
11743 | { | |
11744 | print_recreate_exception (ex_catch_exception, b, fp); | |
11745 | } | |
11746 | ||
2060206e | 11747 | static struct breakpoint_ops catch_exception_breakpoint_ops; |
f7f9143b JB |
11748 | |
11749 | /* Virtual table for "catch exception unhandled" breakpoints. */ | |
11750 | ||
28010a5d PA |
11751 | static void |
11752 | dtor_catch_exception_unhandled (struct breakpoint *b) | |
11753 | { | |
11754 | dtor_exception (ex_catch_exception_unhandled, b); | |
11755 | } | |
11756 | ||
11757 | static struct bp_location * | |
11758 | allocate_location_catch_exception_unhandled (struct breakpoint *self) | |
11759 | { | |
11760 | return allocate_location_exception (ex_catch_exception_unhandled, self); | |
11761 | } | |
11762 | ||
11763 | static void | |
11764 | re_set_catch_exception_unhandled (struct breakpoint *b) | |
11765 | { | |
11766 | re_set_exception (ex_catch_exception_unhandled, b); | |
11767 | } | |
11768 | ||
11769 | static void | |
11770 | check_status_catch_exception_unhandled (bpstat bs) | |
11771 | { | |
11772 | check_status_exception (ex_catch_exception_unhandled, bs); | |
11773 | } | |
11774 | ||
f7f9143b | 11775 | static enum print_stop_action |
348d480f | 11776 | print_it_catch_exception_unhandled (bpstat bs) |
f7f9143b | 11777 | { |
348d480f | 11778 | return print_it_exception (ex_catch_exception_unhandled, bs); |
f7f9143b JB |
11779 | } |
11780 | ||
11781 | static void | |
a6d9a66e UW |
11782 | print_one_catch_exception_unhandled (struct breakpoint *b, |
11783 | struct bp_location **last_loc) | |
f7f9143b | 11784 | { |
a6d9a66e | 11785 | print_one_exception (ex_catch_exception_unhandled, b, last_loc); |
f7f9143b JB |
11786 | } |
11787 | ||
11788 | static void | |
11789 | print_mention_catch_exception_unhandled (struct breakpoint *b) | |
11790 | { | |
11791 | print_mention_exception (ex_catch_exception_unhandled, b); | |
11792 | } | |
11793 | ||
6149aea9 PA |
11794 | static void |
11795 | print_recreate_catch_exception_unhandled (struct breakpoint *b, | |
11796 | struct ui_file *fp) | |
11797 | { | |
11798 | print_recreate_exception (ex_catch_exception_unhandled, b, fp); | |
11799 | } | |
11800 | ||
2060206e | 11801 | static struct breakpoint_ops catch_exception_unhandled_breakpoint_ops; |
f7f9143b JB |
11802 | |
11803 | /* Virtual table for "catch assert" breakpoints. */ | |
11804 | ||
28010a5d PA |
11805 | static void |
11806 | dtor_catch_assert (struct breakpoint *b) | |
11807 | { | |
11808 | dtor_exception (ex_catch_assert, b); | |
11809 | } | |
11810 | ||
11811 | static struct bp_location * | |
11812 | allocate_location_catch_assert (struct breakpoint *self) | |
11813 | { | |
11814 | return allocate_location_exception (ex_catch_assert, self); | |
11815 | } | |
11816 | ||
11817 | static void | |
11818 | re_set_catch_assert (struct breakpoint *b) | |
11819 | { | |
843e694d | 11820 | re_set_exception (ex_catch_assert, b); |
28010a5d PA |
11821 | } |
11822 | ||
11823 | static void | |
11824 | check_status_catch_assert (bpstat bs) | |
11825 | { | |
11826 | check_status_exception (ex_catch_assert, bs); | |
11827 | } | |
11828 | ||
f7f9143b | 11829 | static enum print_stop_action |
348d480f | 11830 | print_it_catch_assert (bpstat bs) |
f7f9143b | 11831 | { |
348d480f | 11832 | return print_it_exception (ex_catch_assert, bs); |
f7f9143b JB |
11833 | } |
11834 | ||
11835 | static void | |
a6d9a66e | 11836 | print_one_catch_assert (struct breakpoint *b, struct bp_location **last_loc) |
f7f9143b | 11837 | { |
a6d9a66e | 11838 | print_one_exception (ex_catch_assert, b, last_loc); |
f7f9143b JB |
11839 | } |
11840 | ||
11841 | static void | |
11842 | print_mention_catch_assert (struct breakpoint *b) | |
11843 | { | |
11844 | print_mention_exception (ex_catch_assert, b); | |
11845 | } | |
11846 | ||
6149aea9 PA |
11847 | static void |
11848 | print_recreate_catch_assert (struct breakpoint *b, struct ui_file *fp) | |
11849 | { | |
11850 | print_recreate_exception (ex_catch_assert, b, fp); | |
11851 | } | |
11852 | ||
2060206e | 11853 | static struct breakpoint_ops catch_assert_breakpoint_ops; |
f7f9143b | 11854 | |
f7f9143b JB |
11855 | /* Return a newly allocated copy of the first space-separated token |
11856 | in ARGSP, and then adjust ARGSP to point immediately after that | |
11857 | token. | |
11858 | ||
11859 | Return NULL if ARGPS does not contain any more tokens. */ | |
11860 | ||
11861 | static char * | |
11862 | ada_get_next_arg (char **argsp) | |
11863 | { | |
11864 | char *args = *argsp; | |
11865 | char *end; | |
11866 | char *result; | |
11867 | ||
0fcd72ba | 11868 | args = skip_spaces (args); |
f7f9143b JB |
11869 | if (args[0] == '\0') |
11870 | return NULL; /* No more arguments. */ | |
11871 | ||
11872 | /* Find the end of the current argument. */ | |
11873 | ||
0fcd72ba | 11874 | end = skip_to_space (args); |
f7f9143b JB |
11875 | |
11876 | /* Adjust ARGSP to point to the start of the next argument. */ | |
11877 | ||
11878 | *argsp = end; | |
11879 | ||
11880 | /* Make a copy of the current argument and return it. */ | |
11881 | ||
11882 | result = xmalloc (end - args + 1); | |
11883 | strncpy (result, args, end - args); | |
11884 | result[end - args] = '\0'; | |
11885 | ||
11886 | return result; | |
11887 | } | |
11888 | ||
11889 | /* Split the arguments specified in a "catch exception" command. | |
11890 | Set EX to the appropriate catchpoint type. | |
28010a5d | 11891 | Set EXCEP_STRING to the name of the specific exception if |
5845583d JB |
11892 | specified by the user. |
11893 | If a condition is found at the end of the arguments, the condition | |
11894 | expression is stored in COND_STRING (memory must be deallocated | |
11895 | after use). Otherwise COND_STRING is set to NULL. */ | |
f7f9143b JB |
11896 | |
11897 | static void | |
11898 | catch_ada_exception_command_split (char *args, | |
11899 | enum exception_catchpoint_kind *ex, | |
5845583d JB |
11900 | char **excep_string, |
11901 | char **cond_string) | |
f7f9143b JB |
11902 | { |
11903 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); | |
11904 | char *exception_name; | |
5845583d | 11905 | char *cond = NULL; |
f7f9143b JB |
11906 | |
11907 | exception_name = ada_get_next_arg (&args); | |
5845583d JB |
11908 | if (exception_name != NULL && strcmp (exception_name, "if") == 0) |
11909 | { | |
11910 | /* This is not an exception name; this is the start of a condition | |
11911 | expression for a catchpoint on all exceptions. So, "un-get" | |
11912 | this token, and set exception_name to NULL. */ | |
11913 | xfree (exception_name); | |
11914 | exception_name = NULL; | |
11915 | args -= 2; | |
11916 | } | |
f7f9143b JB |
11917 | make_cleanup (xfree, exception_name); |
11918 | ||
5845583d | 11919 | /* Check to see if we have a condition. */ |
f7f9143b | 11920 | |
0fcd72ba | 11921 | args = skip_spaces (args); |
5845583d JB |
11922 | if (strncmp (args, "if", 2) == 0 |
11923 | && (isspace (args[2]) || args[2] == '\0')) | |
11924 | { | |
11925 | args += 2; | |
11926 | args = skip_spaces (args); | |
11927 | ||
11928 | if (args[0] == '\0') | |
11929 | error (_("Condition missing after `if' keyword")); | |
11930 | cond = xstrdup (args); | |
11931 | make_cleanup (xfree, cond); | |
11932 | ||
11933 | args += strlen (args); | |
11934 | } | |
11935 | ||
11936 | /* Check that we do not have any more arguments. Anything else | |
11937 | is unexpected. */ | |
f7f9143b JB |
11938 | |
11939 | if (args[0] != '\0') | |
11940 | error (_("Junk at end of expression")); | |
11941 | ||
11942 | discard_cleanups (old_chain); | |
11943 | ||
11944 | if (exception_name == NULL) | |
11945 | { | |
11946 | /* Catch all exceptions. */ | |
11947 | *ex = ex_catch_exception; | |
28010a5d | 11948 | *excep_string = NULL; |
f7f9143b JB |
11949 | } |
11950 | else if (strcmp (exception_name, "unhandled") == 0) | |
11951 | { | |
11952 | /* Catch unhandled exceptions. */ | |
11953 | *ex = ex_catch_exception_unhandled; | |
28010a5d | 11954 | *excep_string = NULL; |
f7f9143b JB |
11955 | } |
11956 | else | |
11957 | { | |
11958 | /* Catch a specific exception. */ | |
11959 | *ex = ex_catch_exception; | |
28010a5d | 11960 | *excep_string = exception_name; |
f7f9143b | 11961 | } |
5845583d | 11962 | *cond_string = cond; |
f7f9143b JB |
11963 | } |
11964 | ||
11965 | /* Return the name of the symbol on which we should break in order to | |
11966 | implement a catchpoint of the EX kind. */ | |
11967 | ||
11968 | static const char * | |
11969 | ada_exception_sym_name (enum exception_catchpoint_kind ex) | |
11970 | { | |
3eecfa55 JB |
11971 | struct ada_inferior_data *data = get_ada_inferior_data (current_inferior ()); |
11972 | ||
11973 | gdb_assert (data->exception_info != NULL); | |
0259addd | 11974 | |
f7f9143b JB |
11975 | switch (ex) |
11976 | { | |
11977 | case ex_catch_exception: | |
3eecfa55 | 11978 | return (data->exception_info->catch_exception_sym); |
f7f9143b JB |
11979 | break; |
11980 | case ex_catch_exception_unhandled: | |
3eecfa55 | 11981 | return (data->exception_info->catch_exception_unhandled_sym); |
f7f9143b JB |
11982 | break; |
11983 | case ex_catch_assert: | |
3eecfa55 | 11984 | return (data->exception_info->catch_assert_sym); |
f7f9143b JB |
11985 | break; |
11986 | default: | |
11987 | internal_error (__FILE__, __LINE__, | |
11988 | _("unexpected catchpoint kind (%d)"), ex); | |
11989 | } | |
11990 | } | |
11991 | ||
11992 | /* Return the breakpoint ops "virtual table" used for catchpoints | |
11993 | of the EX kind. */ | |
11994 | ||
c0a91b2b | 11995 | static const struct breakpoint_ops * |
4b9eee8c | 11996 | ada_exception_breakpoint_ops (enum exception_catchpoint_kind ex) |
f7f9143b JB |
11997 | { |
11998 | switch (ex) | |
11999 | { | |
12000 | case ex_catch_exception: | |
12001 | return (&catch_exception_breakpoint_ops); | |
12002 | break; | |
12003 | case ex_catch_exception_unhandled: | |
12004 | return (&catch_exception_unhandled_breakpoint_ops); | |
12005 | break; | |
12006 | case ex_catch_assert: | |
12007 | return (&catch_assert_breakpoint_ops); | |
12008 | break; | |
12009 | default: | |
12010 | internal_error (__FILE__, __LINE__, | |
12011 | _("unexpected catchpoint kind (%d)"), ex); | |
12012 | } | |
12013 | } | |
12014 | ||
12015 | /* Return the condition that will be used to match the current exception | |
12016 | being raised with the exception that the user wants to catch. This | |
12017 | assumes that this condition is used when the inferior just triggered | |
12018 | an exception catchpoint. | |
12019 | ||
12020 | The string returned is a newly allocated string that needs to be | |
12021 | deallocated later. */ | |
12022 | ||
12023 | static char * | |
28010a5d | 12024 | ada_exception_catchpoint_cond_string (const char *excep_string) |
f7f9143b | 12025 | { |
3d0b0fa3 JB |
12026 | int i; |
12027 | ||
0963b4bd | 12028 | /* The standard exceptions are a special case. They are defined in |
3d0b0fa3 | 12029 | runtime units that have been compiled without debugging info; if |
28010a5d | 12030 | EXCEP_STRING is the not-fully-qualified name of a standard |
3d0b0fa3 JB |
12031 | exception (e.g. "constraint_error") then, during the evaluation |
12032 | of the condition expression, the symbol lookup on this name would | |
0963b4bd | 12033 | *not* return this standard exception. The catchpoint condition |
3d0b0fa3 JB |
12034 | may then be set only on user-defined exceptions which have the |
12035 | same not-fully-qualified name (e.g. my_package.constraint_error). | |
12036 | ||
12037 | To avoid this unexcepted behavior, these standard exceptions are | |
0963b4bd | 12038 | systematically prefixed by "standard". This means that "catch |
3d0b0fa3 JB |
12039 | exception constraint_error" is rewritten into "catch exception |
12040 | standard.constraint_error". | |
12041 | ||
12042 | If an exception named contraint_error is defined in another package of | |
12043 | the inferior program, then the only way to specify this exception as a | |
12044 | breakpoint condition is to use its fully-qualified named: | |
12045 | e.g. my_package.constraint_error. */ | |
12046 | ||
12047 | for (i = 0; i < sizeof (standard_exc) / sizeof (char *); i++) | |
12048 | { | |
28010a5d | 12049 | if (strcmp (standard_exc [i], excep_string) == 0) |
3d0b0fa3 JB |
12050 | { |
12051 | return xstrprintf ("long_integer (e) = long_integer (&standard.%s)", | |
28010a5d | 12052 | excep_string); |
3d0b0fa3 JB |
12053 | } |
12054 | } | |
28010a5d | 12055 | return xstrprintf ("long_integer (e) = long_integer (&%s)", excep_string); |
f7f9143b JB |
12056 | } |
12057 | ||
12058 | /* Return the symtab_and_line that should be used to insert an exception | |
12059 | catchpoint of the TYPE kind. | |
12060 | ||
28010a5d PA |
12061 | EXCEP_STRING should contain the name of a specific exception that |
12062 | the catchpoint should catch, or NULL otherwise. | |
f7f9143b | 12063 | |
28010a5d PA |
12064 | ADDR_STRING returns the name of the function where the real |
12065 | breakpoint that implements the catchpoints is set, depending on the | |
12066 | type of catchpoint we need to create. */ | |
f7f9143b JB |
12067 | |
12068 | static struct symtab_and_line | |
28010a5d | 12069 | ada_exception_sal (enum exception_catchpoint_kind ex, char *excep_string, |
c0a91b2b | 12070 | char **addr_string, const struct breakpoint_ops **ops) |
f7f9143b JB |
12071 | { |
12072 | const char *sym_name; | |
12073 | struct symbol *sym; | |
f7f9143b | 12074 | |
0259addd JB |
12075 | /* First, find out which exception support info to use. */ |
12076 | ada_exception_support_info_sniffer (); | |
12077 | ||
12078 | /* Then lookup the function on which we will break in order to catch | |
f7f9143b | 12079 | the Ada exceptions requested by the user. */ |
f7f9143b JB |
12080 | sym_name = ada_exception_sym_name (ex); |
12081 | sym = standard_lookup (sym_name, NULL, VAR_DOMAIN); | |
12082 | ||
f17011e0 JB |
12083 | /* We can assume that SYM is not NULL at this stage. If the symbol |
12084 | did not exist, ada_exception_support_info_sniffer would have | |
12085 | raised an exception. | |
f7f9143b | 12086 | |
f17011e0 JB |
12087 | Also, ada_exception_support_info_sniffer should have already |
12088 | verified that SYM is a function symbol. */ | |
12089 | gdb_assert (sym != NULL); | |
12090 | gdb_assert (SYMBOL_CLASS (sym) == LOC_BLOCK); | |
f7f9143b JB |
12091 | |
12092 | /* Set ADDR_STRING. */ | |
f7f9143b JB |
12093 | *addr_string = xstrdup (sym_name); |
12094 | ||
f7f9143b | 12095 | /* Set OPS. */ |
4b9eee8c | 12096 | *ops = ada_exception_breakpoint_ops (ex); |
f7f9143b | 12097 | |
f17011e0 | 12098 | return find_function_start_sal (sym, 1); |
f7f9143b JB |
12099 | } |
12100 | ||
12101 | /* Parse the arguments (ARGS) of the "catch exception" command. | |
12102 | ||
f7f9143b JB |
12103 | If the user asked the catchpoint to catch only a specific |
12104 | exception, then save the exception name in ADDR_STRING. | |
12105 | ||
5845583d JB |
12106 | If the user provided a condition, then set COND_STRING to |
12107 | that condition expression (the memory must be deallocated | |
12108 | after use). Otherwise, set COND_STRING to NULL. | |
12109 | ||
f7f9143b JB |
12110 | See ada_exception_sal for a description of all the remaining |
12111 | function arguments of this function. */ | |
12112 | ||
9ac4176b | 12113 | static struct symtab_and_line |
f7f9143b | 12114 | ada_decode_exception_location (char *args, char **addr_string, |
28010a5d | 12115 | char **excep_string, |
5845583d | 12116 | char **cond_string, |
c0a91b2b | 12117 | const struct breakpoint_ops **ops) |
f7f9143b JB |
12118 | { |
12119 | enum exception_catchpoint_kind ex; | |
12120 | ||
5845583d | 12121 | catch_ada_exception_command_split (args, &ex, excep_string, cond_string); |
28010a5d PA |
12122 | return ada_exception_sal (ex, *excep_string, addr_string, ops); |
12123 | } | |
12124 | ||
12125 | /* Create an Ada exception catchpoint. */ | |
12126 | ||
12127 | static void | |
12128 | create_ada_exception_catchpoint (struct gdbarch *gdbarch, | |
12129 | struct symtab_and_line sal, | |
12130 | char *addr_string, | |
12131 | char *excep_string, | |
5845583d | 12132 | char *cond_string, |
c0a91b2b | 12133 | const struct breakpoint_ops *ops, |
28010a5d PA |
12134 | int tempflag, |
12135 | int from_tty) | |
12136 | { | |
12137 | struct ada_catchpoint *c; | |
12138 | ||
12139 | c = XNEW (struct ada_catchpoint); | |
12140 | init_ada_exception_breakpoint (&c->base, gdbarch, sal, addr_string, | |
12141 | ops, tempflag, from_tty); | |
12142 | c->excep_string = excep_string; | |
12143 | create_excep_cond_exprs (c); | |
5845583d JB |
12144 | if (cond_string != NULL) |
12145 | set_breakpoint_condition (&c->base, cond_string, from_tty); | |
3ea46bff | 12146 | install_breakpoint (0, &c->base, 1); |
f7f9143b JB |
12147 | } |
12148 | ||
9ac4176b PA |
12149 | /* Implement the "catch exception" command. */ |
12150 | ||
12151 | static void | |
12152 | catch_ada_exception_command (char *arg, int from_tty, | |
12153 | struct cmd_list_element *command) | |
12154 | { | |
12155 | struct gdbarch *gdbarch = get_current_arch (); | |
12156 | int tempflag; | |
12157 | struct symtab_and_line sal; | |
12158 | char *addr_string = NULL; | |
28010a5d | 12159 | char *excep_string = NULL; |
5845583d | 12160 | char *cond_string = NULL; |
c0a91b2b | 12161 | const struct breakpoint_ops *ops = NULL; |
9ac4176b PA |
12162 | |
12163 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
12164 | ||
12165 | if (!arg) | |
12166 | arg = ""; | |
5845583d JB |
12167 | sal = ada_decode_exception_location (arg, &addr_string, &excep_string, |
12168 | &cond_string, &ops); | |
28010a5d | 12169 | create_ada_exception_catchpoint (gdbarch, sal, addr_string, |
5845583d JB |
12170 | excep_string, cond_string, ops, |
12171 | tempflag, from_tty); | |
9ac4176b PA |
12172 | } |
12173 | ||
5845583d JB |
12174 | /* Assuming that ARGS contains the arguments of a "catch assert" |
12175 | command, parse those arguments and return a symtab_and_line object | |
12176 | for a failed assertion catchpoint. | |
12177 | ||
12178 | Set ADDR_STRING to the name of the function where the real | |
12179 | breakpoint that implements the catchpoint is set. | |
12180 | ||
12181 | If ARGS contains a condition, set COND_STRING to that condition | |
12182 | (the memory needs to be deallocated after use). Otherwise, set | |
12183 | COND_STRING to NULL. */ | |
12184 | ||
9ac4176b | 12185 | static struct symtab_and_line |
f7f9143b | 12186 | ada_decode_assert_location (char *args, char **addr_string, |
5845583d | 12187 | char **cond_string, |
c0a91b2b | 12188 | const struct breakpoint_ops **ops) |
f7f9143b | 12189 | { |
5845583d | 12190 | args = skip_spaces (args); |
f7f9143b | 12191 | |
5845583d JB |
12192 | /* Check whether a condition was provided. */ |
12193 | if (strncmp (args, "if", 2) == 0 | |
12194 | && (isspace (args[2]) || args[2] == '\0')) | |
f7f9143b | 12195 | { |
5845583d | 12196 | args += 2; |
0fcd72ba | 12197 | args = skip_spaces (args); |
5845583d JB |
12198 | if (args[0] == '\0') |
12199 | error (_("condition missing after `if' keyword")); | |
12200 | *cond_string = xstrdup (args); | |
f7f9143b JB |
12201 | } |
12202 | ||
5845583d JB |
12203 | /* Otherwise, there should be no other argument at the end of |
12204 | the command. */ | |
12205 | else if (args[0] != '\0') | |
12206 | error (_("Junk at end of arguments.")); | |
12207 | ||
28010a5d | 12208 | return ada_exception_sal (ex_catch_assert, NULL, addr_string, ops); |
f7f9143b JB |
12209 | } |
12210 | ||
9ac4176b PA |
12211 | /* Implement the "catch assert" command. */ |
12212 | ||
12213 | static void | |
12214 | catch_assert_command (char *arg, int from_tty, | |
12215 | struct cmd_list_element *command) | |
12216 | { | |
12217 | struct gdbarch *gdbarch = get_current_arch (); | |
12218 | int tempflag; | |
12219 | struct symtab_and_line sal; | |
12220 | char *addr_string = NULL; | |
5845583d | 12221 | char *cond_string = NULL; |
c0a91b2b | 12222 | const struct breakpoint_ops *ops = NULL; |
9ac4176b PA |
12223 | |
12224 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
12225 | ||
12226 | if (!arg) | |
12227 | arg = ""; | |
5845583d | 12228 | sal = ada_decode_assert_location (arg, &addr_string, &cond_string, &ops); |
28010a5d | 12229 | create_ada_exception_catchpoint (gdbarch, sal, addr_string, |
5845583d JB |
12230 | NULL, cond_string, ops, tempflag, |
12231 | from_tty); | |
9ac4176b | 12232 | } |
4c4b4cd2 PH |
12233 | /* Operators */ |
12234 | /* Information about operators given special treatment in functions | |
12235 | below. */ | |
12236 | /* Format: OP_DEFN (<operator>, <operator length>, <# args>, <binop>). */ | |
12237 | ||
12238 | #define ADA_OPERATORS \ | |
12239 | OP_DEFN (OP_VAR_VALUE, 4, 0, 0) \ | |
12240 | OP_DEFN (BINOP_IN_BOUNDS, 3, 2, 0) \ | |
12241 | OP_DEFN (TERNOP_IN_RANGE, 1, 3, 0) \ | |
12242 | OP_DEFN (OP_ATR_FIRST, 1, 2, 0) \ | |
12243 | OP_DEFN (OP_ATR_LAST, 1, 2, 0) \ | |
12244 | OP_DEFN (OP_ATR_LENGTH, 1, 2, 0) \ | |
12245 | OP_DEFN (OP_ATR_IMAGE, 1, 2, 0) \ | |
12246 | OP_DEFN (OP_ATR_MAX, 1, 3, 0) \ | |
12247 | OP_DEFN (OP_ATR_MIN, 1, 3, 0) \ | |
12248 | OP_DEFN (OP_ATR_MODULUS, 1, 1, 0) \ | |
12249 | OP_DEFN (OP_ATR_POS, 1, 2, 0) \ | |
12250 | OP_DEFN (OP_ATR_SIZE, 1, 1, 0) \ | |
12251 | OP_DEFN (OP_ATR_TAG, 1, 1, 0) \ | |
12252 | OP_DEFN (OP_ATR_VAL, 1, 2, 0) \ | |
12253 | OP_DEFN (UNOP_QUAL, 3, 1, 0) \ | |
52ce6436 PH |
12254 | OP_DEFN (UNOP_IN_RANGE, 3, 1, 0) \ |
12255 | OP_DEFN (OP_OTHERS, 1, 1, 0) \ | |
12256 | OP_DEFN (OP_POSITIONAL, 3, 1, 0) \ | |
12257 | OP_DEFN (OP_DISCRETE_RANGE, 1, 2, 0) | |
4c4b4cd2 PH |
12258 | |
12259 | static void | |
554794dc SDJ |
12260 | ada_operator_length (const struct expression *exp, int pc, int *oplenp, |
12261 | int *argsp) | |
4c4b4cd2 PH |
12262 | { |
12263 | switch (exp->elts[pc - 1].opcode) | |
12264 | { | |
76a01679 | 12265 | default: |
4c4b4cd2 PH |
12266 | operator_length_standard (exp, pc, oplenp, argsp); |
12267 | break; | |
12268 | ||
12269 | #define OP_DEFN(op, len, args, binop) \ | |
12270 | case op: *oplenp = len; *argsp = args; break; | |
12271 | ADA_OPERATORS; | |
12272 | #undef OP_DEFN | |
52ce6436 PH |
12273 | |
12274 | case OP_AGGREGATE: | |
12275 | *oplenp = 3; | |
12276 | *argsp = longest_to_int (exp->elts[pc - 2].longconst); | |
12277 | break; | |
12278 | ||
12279 | case OP_CHOICES: | |
12280 | *oplenp = 3; | |
12281 | *argsp = longest_to_int (exp->elts[pc - 2].longconst) + 1; | |
12282 | break; | |
4c4b4cd2 PH |
12283 | } |
12284 | } | |
12285 | ||
c0201579 JK |
12286 | /* Implementation of the exp_descriptor method operator_check. */ |
12287 | ||
12288 | static int | |
12289 | ada_operator_check (struct expression *exp, int pos, | |
12290 | int (*objfile_func) (struct objfile *objfile, void *data), | |
12291 | void *data) | |
12292 | { | |
12293 | const union exp_element *const elts = exp->elts; | |
12294 | struct type *type = NULL; | |
12295 | ||
12296 | switch (elts[pos].opcode) | |
12297 | { | |
12298 | case UNOP_IN_RANGE: | |
12299 | case UNOP_QUAL: | |
12300 | type = elts[pos + 1].type; | |
12301 | break; | |
12302 | ||
12303 | default: | |
12304 | return operator_check_standard (exp, pos, objfile_func, data); | |
12305 | } | |
12306 | ||
12307 | /* Invoke callbacks for TYPE and OBJFILE if they were set as non-NULL. */ | |
12308 | ||
12309 | if (type && TYPE_OBJFILE (type) | |
12310 | && (*objfile_func) (TYPE_OBJFILE (type), data)) | |
12311 | return 1; | |
12312 | ||
12313 | return 0; | |
12314 | } | |
12315 | ||
4c4b4cd2 PH |
12316 | static char * |
12317 | ada_op_name (enum exp_opcode opcode) | |
12318 | { | |
12319 | switch (opcode) | |
12320 | { | |
76a01679 | 12321 | default: |
4c4b4cd2 | 12322 | return op_name_standard (opcode); |
52ce6436 | 12323 | |
4c4b4cd2 PH |
12324 | #define OP_DEFN(op, len, args, binop) case op: return #op; |
12325 | ADA_OPERATORS; | |
12326 | #undef OP_DEFN | |
52ce6436 PH |
12327 | |
12328 | case OP_AGGREGATE: | |
12329 | return "OP_AGGREGATE"; | |
12330 | case OP_CHOICES: | |
12331 | return "OP_CHOICES"; | |
12332 | case OP_NAME: | |
12333 | return "OP_NAME"; | |
4c4b4cd2 PH |
12334 | } |
12335 | } | |
12336 | ||
12337 | /* As for operator_length, but assumes PC is pointing at the first | |
12338 | element of the operator, and gives meaningful results only for the | |
52ce6436 | 12339 | Ada-specific operators, returning 0 for *OPLENP and *ARGSP otherwise. */ |
4c4b4cd2 PH |
12340 | |
12341 | static void | |
76a01679 JB |
12342 | ada_forward_operator_length (struct expression *exp, int pc, |
12343 | int *oplenp, int *argsp) | |
4c4b4cd2 | 12344 | { |
76a01679 | 12345 | switch (exp->elts[pc].opcode) |
4c4b4cd2 PH |
12346 | { |
12347 | default: | |
12348 | *oplenp = *argsp = 0; | |
12349 | break; | |
52ce6436 | 12350 | |
4c4b4cd2 PH |
12351 | #define OP_DEFN(op, len, args, binop) \ |
12352 | case op: *oplenp = len; *argsp = args; break; | |
12353 | ADA_OPERATORS; | |
12354 | #undef OP_DEFN | |
52ce6436 PH |
12355 | |
12356 | case OP_AGGREGATE: | |
12357 | *oplenp = 3; | |
12358 | *argsp = longest_to_int (exp->elts[pc + 1].longconst); | |
12359 | break; | |
12360 | ||
12361 | case OP_CHOICES: | |
12362 | *oplenp = 3; | |
12363 | *argsp = longest_to_int (exp->elts[pc + 1].longconst) + 1; | |
12364 | break; | |
12365 | ||
12366 | case OP_STRING: | |
12367 | case OP_NAME: | |
12368 | { | |
12369 | int len = longest_to_int (exp->elts[pc + 1].longconst); | |
5b4ee69b | 12370 | |
52ce6436 PH |
12371 | *oplenp = 4 + BYTES_TO_EXP_ELEM (len + 1); |
12372 | *argsp = 0; | |
12373 | break; | |
12374 | } | |
4c4b4cd2 PH |
12375 | } |
12376 | } | |
12377 | ||
12378 | static int | |
12379 | ada_dump_subexp_body (struct expression *exp, struct ui_file *stream, int elt) | |
12380 | { | |
12381 | enum exp_opcode op = exp->elts[elt].opcode; | |
12382 | int oplen, nargs; | |
12383 | int pc = elt; | |
12384 | int i; | |
76a01679 | 12385 | |
4c4b4cd2 PH |
12386 | ada_forward_operator_length (exp, elt, &oplen, &nargs); |
12387 | ||
76a01679 | 12388 | switch (op) |
4c4b4cd2 | 12389 | { |
76a01679 | 12390 | /* Ada attributes ('Foo). */ |
4c4b4cd2 PH |
12391 | case OP_ATR_FIRST: |
12392 | case OP_ATR_LAST: | |
12393 | case OP_ATR_LENGTH: | |
12394 | case OP_ATR_IMAGE: | |
12395 | case OP_ATR_MAX: | |
12396 | case OP_ATR_MIN: | |
12397 | case OP_ATR_MODULUS: | |
12398 | case OP_ATR_POS: | |
12399 | case OP_ATR_SIZE: | |
12400 | case OP_ATR_TAG: | |
12401 | case OP_ATR_VAL: | |
12402 | break; | |
12403 | ||
12404 | case UNOP_IN_RANGE: | |
12405 | case UNOP_QUAL: | |
323e0a4a AC |
12406 | /* XXX: gdb_sprint_host_address, type_sprint */ |
12407 | fprintf_filtered (stream, _("Type @")); | |
4c4b4cd2 PH |
12408 | gdb_print_host_address (exp->elts[pc + 1].type, stream); |
12409 | fprintf_filtered (stream, " ("); | |
12410 | type_print (exp->elts[pc + 1].type, NULL, stream, 0); | |
12411 | fprintf_filtered (stream, ")"); | |
12412 | break; | |
12413 | case BINOP_IN_BOUNDS: | |
52ce6436 PH |
12414 | fprintf_filtered (stream, " (%d)", |
12415 | longest_to_int (exp->elts[pc + 2].longconst)); | |
4c4b4cd2 PH |
12416 | break; |
12417 | case TERNOP_IN_RANGE: | |
12418 | break; | |
12419 | ||
52ce6436 PH |
12420 | case OP_AGGREGATE: |
12421 | case OP_OTHERS: | |
12422 | case OP_DISCRETE_RANGE: | |
12423 | case OP_POSITIONAL: | |
12424 | case OP_CHOICES: | |
12425 | break; | |
12426 | ||
12427 | case OP_NAME: | |
12428 | case OP_STRING: | |
12429 | { | |
12430 | char *name = &exp->elts[elt + 2].string; | |
12431 | int len = longest_to_int (exp->elts[elt + 1].longconst); | |
5b4ee69b | 12432 | |
52ce6436 PH |
12433 | fprintf_filtered (stream, "Text: `%.*s'", len, name); |
12434 | break; | |
12435 | } | |
12436 | ||
4c4b4cd2 PH |
12437 | default: |
12438 | return dump_subexp_body_standard (exp, stream, elt); | |
12439 | } | |
12440 | ||
12441 | elt += oplen; | |
12442 | for (i = 0; i < nargs; i += 1) | |
12443 | elt = dump_subexp (exp, stream, elt); | |
12444 | ||
12445 | return elt; | |
12446 | } | |
12447 | ||
12448 | /* The Ada extension of print_subexp (q.v.). */ | |
12449 | ||
76a01679 JB |
12450 | static void |
12451 | ada_print_subexp (struct expression *exp, int *pos, | |
12452 | struct ui_file *stream, enum precedence prec) | |
4c4b4cd2 | 12453 | { |
52ce6436 | 12454 | int oplen, nargs, i; |
4c4b4cd2 PH |
12455 | int pc = *pos; |
12456 | enum exp_opcode op = exp->elts[pc].opcode; | |
12457 | ||
12458 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
12459 | ||
52ce6436 | 12460 | *pos += oplen; |
4c4b4cd2 PH |
12461 | switch (op) |
12462 | { | |
12463 | default: | |
52ce6436 | 12464 | *pos -= oplen; |
4c4b4cd2 PH |
12465 | print_subexp_standard (exp, pos, stream, prec); |
12466 | return; | |
12467 | ||
12468 | case OP_VAR_VALUE: | |
4c4b4cd2 PH |
12469 | fputs_filtered (SYMBOL_NATURAL_NAME (exp->elts[pc + 2].symbol), stream); |
12470 | return; | |
12471 | ||
12472 | case BINOP_IN_BOUNDS: | |
323e0a4a | 12473 | /* XXX: sprint_subexp */ |
4c4b4cd2 | 12474 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 12475 | fputs_filtered (" in ", stream); |
4c4b4cd2 | 12476 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 12477 | fputs_filtered ("'range", stream); |
4c4b4cd2 | 12478 | if (exp->elts[pc + 1].longconst > 1) |
76a01679 JB |
12479 | fprintf_filtered (stream, "(%ld)", |
12480 | (long) exp->elts[pc + 1].longconst); | |
4c4b4cd2 PH |
12481 | return; |
12482 | ||
12483 | case TERNOP_IN_RANGE: | |
4c4b4cd2 | 12484 | if (prec >= PREC_EQUAL) |
76a01679 | 12485 | fputs_filtered ("(", stream); |
323e0a4a | 12486 | /* XXX: sprint_subexp */ |
4c4b4cd2 | 12487 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 12488 | fputs_filtered (" in ", stream); |
4c4b4cd2 PH |
12489 | print_subexp (exp, pos, stream, PREC_EQUAL); |
12490 | fputs_filtered (" .. ", stream); | |
12491 | print_subexp (exp, pos, stream, PREC_EQUAL); | |
12492 | if (prec >= PREC_EQUAL) | |
76a01679 JB |
12493 | fputs_filtered (")", stream); |
12494 | return; | |
4c4b4cd2 PH |
12495 | |
12496 | case OP_ATR_FIRST: | |
12497 | case OP_ATR_LAST: | |
12498 | case OP_ATR_LENGTH: | |
12499 | case OP_ATR_IMAGE: | |
12500 | case OP_ATR_MAX: | |
12501 | case OP_ATR_MIN: | |
12502 | case OP_ATR_MODULUS: | |
12503 | case OP_ATR_POS: | |
12504 | case OP_ATR_SIZE: | |
12505 | case OP_ATR_TAG: | |
12506 | case OP_ATR_VAL: | |
4c4b4cd2 | 12507 | if (exp->elts[*pos].opcode == OP_TYPE) |
76a01679 JB |
12508 | { |
12509 | if (TYPE_CODE (exp->elts[*pos + 1].type) != TYPE_CODE_VOID) | |
79d43c61 TT |
12510 | LA_PRINT_TYPE (exp->elts[*pos + 1].type, "", stream, 0, 0, |
12511 | &type_print_raw_options); | |
76a01679 JB |
12512 | *pos += 3; |
12513 | } | |
4c4b4cd2 | 12514 | else |
76a01679 | 12515 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
4c4b4cd2 PH |
12516 | fprintf_filtered (stream, "'%s", ada_attribute_name (op)); |
12517 | if (nargs > 1) | |
76a01679 JB |
12518 | { |
12519 | int tem; | |
5b4ee69b | 12520 | |
76a01679 JB |
12521 | for (tem = 1; tem < nargs; tem += 1) |
12522 | { | |
12523 | fputs_filtered ((tem == 1) ? " (" : ", ", stream); | |
12524 | print_subexp (exp, pos, stream, PREC_ABOVE_COMMA); | |
12525 | } | |
12526 | fputs_filtered (")", stream); | |
12527 | } | |
4c4b4cd2 | 12528 | return; |
14f9c5c9 | 12529 | |
4c4b4cd2 | 12530 | case UNOP_QUAL: |
4c4b4cd2 PH |
12531 | type_print (exp->elts[pc + 1].type, "", stream, 0); |
12532 | fputs_filtered ("'(", stream); | |
12533 | print_subexp (exp, pos, stream, PREC_PREFIX); | |
12534 | fputs_filtered (")", stream); | |
12535 | return; | |
14f9c5c9 | 12536 | |
4c4b4cd2 | 12537 | case UNOP_IN_RANGE: |
323e0a4a | 12538 | /* XXX: sprint_subexp */ |
4c4b4cd2 | 12539 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
0b48a291 | 12540 | fputs_filtered (" in ", stream); |
79d43c61 TT |
12541 | LA_PRINT_TYPE (exp->elts[pc + 1].type, "", stream, 1, 0, |
12542 | &type_print_raw_options); | |
4c4b4cd2 | 12543 | return; |
52ce6436 PH |
12544 | |
12545 | case OP_DISCRETE_RANGE: | |
12546 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
12547 | fputs_filtered ("..", stream); | |
12548 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
12549 | return; | |
12550 | ||
12551 | case OP_OTHERS: | |
12552 | fputs_filtered ("others => ", stream); | |
12553 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
12554 | return; | |
12555 | ||
12556 | case OP_CHOICES: | |
12557 | for (i = 0; i < nargs-1; i += 1) | |
12558 | { | |
12559 | if (i > 0) | |
12560 | fputs_filtered ("|", stream); | |
12561 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
12562 | } | |
12563 | fputs_filtered (" => ", stream); | |
12564 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
12565 | return; | |
12566 | ||
12567 | case OP_POSITIONAL: | |
12568 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
12569 | return; | |
12570 | ||
12571 | case OP_AGGREGATE: | |
12572 | fputs_filtered ("(", stream); | |
12573 | for (i = 0; i < nargs; i += 1) | |
12574 | { | |
12575 | if (i > 0) | |
12576 | fputs_filtered (", ", stream); | |
12577 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
12578 | } | |
12579 | fputs_filtered (")", stream); | |
12580 | return; | |
4c4b4cd2 PH |
12581 | } |
12582 | } | |
14f9c5c9 AS |
12583 | |
12584 | /* Table mapping opcodes into strings for printing operators | |
12585 | and precedences of the operators. */ | |
12586 | ||
d2e4a39e AS |
12587 | static const struct op_print ada_op_print_tab[] = { |
12588 | {":=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
12589 | {"or else", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
12590 | {"and then", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
12591 | {"or", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
12592 | {"xor", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
12593 | {"and", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
12594 | {"=", BINOP_EQUAL, PREC_EQUAL, 0}, | |
12595 | {"/=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
12596 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
12597 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
12598 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
12599 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
12600 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
12601 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
12602 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
12603 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
12604 | {"&", BINOP_CONCAT, PREC_ADD, 0}, | |
12605 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
12606 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
12607 | {"rem", BINOP_REM, PREC_MUL, 0}, | |
12608 | {"mod", BINOP_MOD, PREC_MUL, 0}, | |
12609 | {"**", BINOP_EXP, PREC_REPEAT, 0}, | |
12610 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
12611 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
12612 | {"+", UNOP_PLUS, PREC_PREFIX, 0}, | |
12613 | {"not ", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
12614 | {"not ", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
12615 | {"abs ", UNOP_ABS, PREC_PREFIX, 0}, | |
4c4b4cd2 PH |
12616 | {".all", UNOP_IND, PREC_SUFFIX, 1}, |
12617 | {"'access", UNOP_ADDR, PREC_SUFFIX, 1}, | |
12618 | {"'size", OP_ATR_SIZE, PREC_SUFFIX, 1}, | |
d2e4a39e | 12619 | {NULL, 0, 0, 0} |
14f9c5c9 AS |
12620 | }; |
12621 | \f | |
72d5681a PH |
12622 | enum ada_primitive_types { |
12623 | ada_primitive_type_int, | |
12624 | ada_primitive_type_long, | |
12625 | ada_primitive_type_short, | |
12626 | ada_primitive_type_char, | |
12627 | ada_primitive_type_float, | |
12628 | ada_primitive_type_double, | |
12629 | ada_primitive_type_void, | |
12630 | ada_primitive_type_long_long, | |
12631 | ada_primitive_type_long_double, | |
12632 | ada_primitive_type_natural, | |
12633 | ada_primitive_type_positive, | |
12634 | ada_primitive_type_system_address, | |
12635 | nr_ada_primitive_types | |
12636 | }; | |
6c038f32 PH |
12637 | |
12638 | static void | |
d4a9a881 | 12639 | ada_language_arch_info (struct gdbarch *gdbarch, |
72d5681a PH |
12640 | struct language_arch_info *lai) |
12641 | { | |
d4a9a881 | 12642 | const struct builtin_type *builtin = builtin_type (gdbarch); |
5b4ee69b | 12643 | |
72d5681a | 12644 | lai->primitive_type_vector |
d4a9a881 | 12645 | = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_ada_primitive_types + 1, |
72d5681a | 12646 | struct type *); |
e9bb382b UW |
12647 | |
12648 | lai->primitive_type_vector [ada_primitive_type_int] | |
12649 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
12650 | 0, "integer"); | |
12651 | lai->primitive_type_vector [ada_primitive_type_long] | |
12652 | = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), | |
12653 | 0, "long_integer"); | |
12654 | lai->primitive_type_vector [ada_primitive_type_short] | |
12655 | = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), | |
12656 | 0, "short_integer"); | |
12657 | lai->string_char_type | |
12658 | = lai->primitive_type_vector [ada_primitive_type_char] | |
12659 | = arch_integer_type (gdbarch, TARGET_CHAR_BIT, 0, "character"); | |
12660 | lai->primitive_type_vector [ada_primitive_type_float] | |
12661 | = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch), | |
12662 | "float", NULL); | |
12663 | lai->primitive_type_vector [ada_primitive_type_double] | |
12664 | = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch), | |
12665 | "long_float", NULL); | |
12666 | lai->primitive_type_vector [ada_primitive_type_long_long] | |
12667 | = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch), | |
12668 | 0, "long_long_integer"); | |
12669 | lai->primitive_type_vector [ada_primitive_type_long_double] | |
12670 | = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch), | |
12671 | "long_long_float", NULL); | |
12672 | lai->primitive_type_vector [ada_primitive_type_natural] | |
12673 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
12674 | 0, "natural"); | |
12675 | lai->primitive_type_vector [ada_primitive_type_positive] | |
12676 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
12677 | 0, "positive"); | |
12678 | lai->primitive_type_vector [ada_primitive_type_void] | |
12679 | = builtin->builtin_void; | |
12680 | ||
12681 | lai->primitive_type_vector [ada_primitive_type_system_address] | |
12682 | = lookup_pointer_type (arch_type (gdbarch, TYPE_CODE_VOID, 1, "void")); | |
72d5681a PH |
12683 | TYPE_NAME (lai->primitive_type_vector [ada_primitive_type_system_address]) |
12684 | = "system__address"; | |
fbb06eb1 | 12685 | |
47e729a8 | 12686 | lai->bool_type_symbol = NULL; |
fbb06eb1 | 12687 | lai->bool_type_default = builtin->builtin_bool; |
6c038f32 | 12688 | } |
6c038f32 PH |
12689 | \f |
12690 | /* Language vector */ | |
12691 | ||
12692 | /* Not really used, but needed in the ada_language_defn. */ | |
12693 | ||
12694 | static void | |
6c7a06a3 | 12695 | emit_char (int c, struct type *type, struct ui_file *stream, int quoter) |
6c038f32 | 12696 | { |
6c7a06a3 | 12697 | ada_emit_char (c, type, stream, quoter, 1); |
6c038f32 PH |
12698 | } |
12699 | ||
12700 | static int | |
12701 | parse (void) | |
12702 | { | |
12703 | warnings_issued = 0; | |
12704 | return ada_parse (); | |
12705 | } | |
12706 | ||
12707 | static const struct exp_descriptor ada_exp_descriptor = { | |
12708 | ada_print_subexp, | |
12709 | ada_operator_length, | |
c0201579 | 12710 | ada_operator_check, |
6c038f32 PH |
12711 | ada_op_name, |
12712 | ada_dump_subexp_body, | |
12713 | ada_evaluate_subexp | |
12714 | }; | |
12715 | ||
1a119f36 | 12716 | /* Implement the "la_get_symbol_name_cmp" language_defn method |
74ccd7f5 JB |
12717 | for Ada. */ |
12718 | ||
1a119f36 JB |
12719 | static symbol_name_cmp_ftype |
12720 | ada_get_symbol_name_cmp (const char *lookup_name) | |
74ccd7f5 JB |
12721 | { |
12722 | if (should_use_wild_match (lookup_name)) | |
12723 | return wild_match; | |
12724 | else | |
12725 | return compare_names; | |
12726 | } | |
12727 | ||
a5ee536b JB |
12728 | /* Implement the "la_read_var_value" language_defn method for Ada. */ |
12729 | ||
12730 | static struct value * | |
12731 | ada_read_var_value (struct symbol *var, struct frame_info *frame) | |
12732 | { | |
12733 | struct block *frame_block = NULL; | |
12734 | struct symbol *renaming_sym = NULL; | |
12735 | ||
12736 | /* The only case where default_read_var_value is not sufficient | |
12737 | is when VAR is a renaming... */ | |
12738 | if (frame) | |
12739 | frame_block = get_frame_block (frame, NULL); | |
12740 | if (frame_block) | |
12741 | renaming_sym = ada_find_renaming_symbol (var, frame_block); | |
12742 | if (renaming_sym != NULL) | |
12743 | return ada_read_renaming_var_value (renaming_sym, frame_block); | |
12744 | ||
12745 | /* This is a typical case where we expect the default_read_var_value | |
12746 | function to work. */ | |
12747 | return default_read_var_value (var, frame); | |
12748 | } | |
12749 | ||
6c038f32 PH |
12750 | const struct language_defn ada_language_defn = { |
12751 | "ada", /* Language name */ | |
12752 | language_ada, | |
6c038f32 | 12753 | range_check_off, |
6c038f32 PH |
12754 | case_sensitive_on, /* Yes, Ada is case-insensitive, but |
12755 | that's not quite what this means. */ | |
6c038f32 | 12756 | array_row_major, |
9a044a89 | 12757 | macro_expansion_no, |
6c038f32 PH |
12758 | &ada_exp_descriptor, |
12759 | parse, | |
12760 | ada_error, | |
12761 | resolve, | |
12762 | ada_printchar, /* Print a character constant */ | |
12763 | ada_printstr, /* Function to print string constant */ | |
12764 | emit_char, /* Function to print single char (not used) */ | |
6c038f32 | 12765 | ada_print_type, /* Print a type using appropriate syntax */ |
be942545 | 12766 | ada_print_typedef, /* Print a typedef using appropriate syntax */ |
6c038f32 PH |
12767 | ada_val_print, /* Print a value using appropriate syntax */ |
12768 | ada_value_print, /* Print a top-level value */ | |
a5ee536b | 12769 | ada_read_var_value, /* la_read_var_value */ |
6c038f32 | 12770 | NULL, /* Language specific skip_trampoline */ |
2b2d9e11 | 12771 | NULL, /* name_of_this */ |
6c038f32 PH |
12772 | ada_lookup_symbol_nonlocal, /* Looking up non-local symbols. */ |
12773 | basic_lookup_transparent_type, /* lookup_transparent_type */ | |
12774 | ada_la_decode, /* Language specific symbol demangler */ | |
0963b4bd MS |
12775 | NULL, /* Language specific |
12776 | class_name_from_physname */ | |
6c038f32 PH |
12777 | ada_op_print_tab, /* expression operators for printing */ |
12778 | 0, /* c-style arrays */ | |
12779 | 1, /* String lower bound */ | |
6c038f32 | 12780 | ada_get_gdb_completer_word_break_characters, |
41d27058 | 12781 | ada_make_symbol_completion_list, |
72d5681a | 12782 | ada_language_arch_info, |
e79af960 | 12783 | ada_print_array_index, |
41f1b697 | 12784 | default_pass_by_reference, |
ae6a3a4c | 12785 | c_get_string, |
1a119f36 | 12786 | ada_get_symbol_name_cmp, /* la_get_symbol_name_cmp */ |
f8eba3c6 | 12787 | ada_iterate_over_symbols, |
6c038f32 PH |
12788 | LANG_MAGIC |
12789 | }; | |
12790 | ||
2c0b251b PA |
12791 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
12792 | extern initialize_file_ftype _initialize_ada_language; | |
12793 | ||
5bf03f13 JB |
12794 | /* Command-list for the "set/show ada" prefix command. */ |
12795 | static struct cmd_list_element *set_ada_list; | |
12796 | static struct cmd_list_element *show_ada_list; | |
12797 | ||
12798 | /* Implement the "set ada" prefix command. */ | |
12799 | ||
12800 | static void | |
12801 | set_ada_command (char *arg, int from_tty) | |
12802 | { | |
12803 | printf_unfiltered (_(\ | |
12804 | "\"set ada\" must be followed by the name of a setting.\n")); | |
12805 | help_list (set_ada_list, "set ada ", -1, gdb_stdout); | |
12806 | } | |
12807 | ||
12808 | /* Implement the "show ada" prefix command. */ | |
12809 | ||
12810 | static void | |
12811 | show_ada_command (char *args, int from_tty) | |
12812 | { | |
12813 | cmd_show_list (show_ada_list, from_tty, ""); | |
12814 | } | |
12815 | ||
2060206e PA |
12816 | static void |
12817 | initialize_ada_catchpoint_ops (void) | |
12818 | { | |
12819 | struct breakpoint_ops *ops; | |
12820 | ||
12821 | initialize_breakpoint_ops (); | |
12822 | ||
12823 | ops = &catch_exception_breakpoint_ops; | |
12824 | *ops = bkpt_breakpoint_ops; | |
12825 | ops->dtor = dtor_catch_exception; | |
12826 | ops->allocate_location = allocate_location_catch_exception; | |
12827 | ops->re_set = re_set_catch_exception; | |
12828 | ops->check_status = check_status_catch_exception; | |
12829 | ops->print_it = print_it_catch_exception; | |
12830 | ops->print_one = print_one_catch_exception; | |
12831 | ops->print_mention = print_mention_catch_exception; | |
12832 | ops->print_recreate = print_recreate_catch_exception; | |
12833 | ||
12834 | ops = &catch_exception_unhandled_breakpoint_ops; | |
12835 | *ops = bkpt_breakpoint_ops; | |
12836 | ops->dtor = dtor_catch_exception_unhandled; | |
12837 | ops->allocate_location = allocate_location_catch_exception_unhandled; | |
12838 | ops->re_set = re_set_catch_exception_unhandled; | |
12839 | ops->check_status = check_status_catch_exception_unhandled; | |
12840 | ops->print_it = print_it_catch_exception_unhandled; | |
12841 | ops->print_one = print_one_catch_exception_unhandled; | |
12842 | ops->print_mention = print_mention_catch_exception_unhandled; | |
12843 | ops->print_recreate = print_recreate_catch_exception_unhandled; | |
12844 | ||
12845 | ops = &catch_assert_breakpoint_ops; | |
12846 | *ops = bkpt_breakpoint_ops; | |
12847 | ops->dtor = dtor_catch_assert; | |
12848 | ops->allocate_location = allocate_location_catch_assert; | |
12849 | ops->re_set = re_set_catch_assert; | |
12850 | ops->check_status = check_status_catch_assert; | |
12851 | ops->print_it = print_it_catch_assert; | |
12852 | ops->print_one = print_one_catch_assert; | |
12853 | ops->print_mention = print_mention_catch_assert; | |
12854 | ops->print_recreate = print_recreate_catch_assert; | |
12855 | } | |
12856 | ||
d2e4a39e | 12857 | void |
6c038f32 | 12858 | _initialize_ada_language (void) |
14f9c5c9 | 12859 | { |
6c038f32 PH |
12860 | add_language (&ada_language_defn); |
12861 | ||
2060206e PA |
12862 | initialize_ada_catchpoint_ops (); |
12863 | ||
5bf03f13 JB |
12864 | add_prefix_cmd ("ada", no_class, set_ada_command, |
12865 | _("Prefix command for changing Ada-specfic settings"), | |
12866 | &set_ada_list, "set ada ", 0, &setlist); | |
12867 | ||
12868 | add_prefix_cmd ("ada", no_class, show_ada_command, | |
12869 | _("Generic command for showing Ada-specific settings."), | |
12870 | &show_ada_list, "show ada ", 0, &showlist); | |
12871 | ||
12872 | add_setshow_boolean_cmd ("trust-PAD-over-XVS", class_obscure, | |
12873 | &trust_pad_over_xvs, _("\ | |
12874 | Enable or disable an optimization trusting PAD types over XVS types"), _("\ | |
12875 | Show whether an optimization trusting PAD types over XVS types is activated"), | |
12876 | _("\ | |
12877 | This is related to the encoding used by the GNAT compiler. The debugger\n\ | |
12878 | should normally trust the contents of PAD types, but certain older versions\n\ | |
12879 | of GNAT have a bug that sometimes causes the information in the PAD type\n\ | |
12880 | to be incorrect. Turning this setting \"off\" allows the debugger to\n\ | |
12881 | work around this bug. It is always safe to turn this option \"off\", but\n\ | |
12882 | this incurs a slight performance penalty, so it is recommended to NOT change\n\ | |
12883 | this option to \"off\" unless necessary."), | |
12884 | NULL, NULL, &set_ada_list, &show_ada_list); | |
12885 | ||
9ac4176b PA |
12886 | add_catch_command ("exception", _("\ |
12887 | Catch Ada exceptions, when raised.\n\ | |
12888 | With an argument, catch only exceptions with the given name."), | |
12889 | catch_ada_exception_command, | |
12890 | NULL, | |
12891 | CATCH_PERMANENT, | |
12892 | CATCH_TEMPORARY); | |
12893 | add_catch_command ("assert", _("\ | |
12894 | Catch failed Ada assertions, when raised.\n\ | |
12895 | With an argument, catch only exceptions with the given name."), | |
12896 | catch_assert_command, | |
12897 | NULL, | |
12898 | CATCH_PERMANENT, | |
12899 | CATCH_TEMPORARY); | |
12900 | ||
6c038f32 | 12901 | varsize_limit = 65536; |
6c038f32 PH |
12902 | |
12903 | obstack_init (&symbol_list_obstack); | |
12904 | ||
12905 | decoded_names_store = htab_create_alloc | |
12906 | (256, htab_hash_string, (int (*)(const void *, const void *)) streq, | |
12907 | NULL, xcalloc, xfree); | |
6b69afc4 | 12908 | |
e802dbe0 JB |
12909 | /* Setup per-inferior data. */ |
12910 | observer_attach_inferior_exit (ada_inferior_exit); | |
12911 | ada_inferior_data | |
8e260fc0 | 12912 | = register_inferior_data_with_cleanup (NULL, ada_inferior_data_cleanup); |
14f9c5c9 | 12913 | } |