Commit | Line | Data |
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14f9c5c9 | 1 | /* Ada language support routines for GDB, the GNU debugger. Copyright |
4c4b4cd2 | 2 | 1992, 1993, 1994, 1997, 1998, 1999, 2000, 2003, 2004. |
de5ad195 | 3 | Free Software Foundation, Inc. |
14f9c5c9 AS |
4 | |
5 | This file is part of GDB. | |
6 | ||
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 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
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. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
20 | ||
96d887e8 | 21 | |
4c4b4cd2 | 22 | #include "defs.h" |
14f9c5c9 | 23 | #include <stdio.h> |
0c30c098 | 24 | #include "gdb_string.h" |
14f9c5c9 AS |
25 | #include <ctype.h> |
26 | #include <stdarg.h> | |
27 | #include "demangle.h" | |
4c4b4cd2 PH |
28 | #include "gdb_regex.h" |
29 | #include "frame.h" | |
14f9c5c9 AS |
30 | #include "symtab.h" |
31 | #include "gdbtypes.h" | |
32 | #include "gdbcmd.h" | |
33 | #include "expression.h" | |
34 | #include "parser-defs.h" | |
35 | #include "language.h" | |
36 | #include "c-lang.h" | |
37 | #include "inferior.h" | |
38 | #include "symfile.h" | |
39 | #include "objfiles.h" | |
40 | #include "breakpoint.h" | |
41 | #include "gdbcore.h" | |
4c4b4cd2 PH |
42 | #include "hashtab.h" |
43 | #include "gdb_obstack.h" | |
14f9c5c9 | 44 | #include "ada-lang.h" |
4c4b4cd2 PH |
45 | #include "completer.h" |
46 | #include "gdb_stat.h" | |
47 | #ifdef UI_OUT | |
14f9c5c9 | 48 | #include "ui-out.h" |
4c4b4cd2 | 49 | #endif |
fe898f56 | 50 | #include "block.h" |
04714b91 | 51 | #include "infcall.h" |
de4f826b | 52 | #include "dictionary.h" |
14f9c5c9 | 53 | |
4c4b4cd2 PH |
54 | #ifndef ADA_RETAIN_DOTS |
55 | #define ADA_RETAIN_DOTS 0 | |
56 | #endif | |
57 | ||
58 | /* Define whether or not the C operator '/' truncates towards zero for | |
59 | differently signed operands (truncation direction is undefined in C). | |
60 | Copied from valarith.c. */ | |
61 | ||
62 | #ifndef TRUNCATION_TOWARDS_ZERO | |
63 | #define TRUNCATION_TOWARDS_ZERO ((-5 / 2) == -2) | |
64 | #endif | |
65 | ||
4c4b4cd2 | 66 | |
4c4b4cd2 | 67 | static void extract_string (CORE_ADDR addr, char *buf); |
14f9c5c9 | 68 | |
d2e4a39e | 69 | static struct type *ada_create_fundamental_type (struct objfile *, int); |
14f9c5c9 AS |
70 | |
71 | static void modify_general_field (char *, LONGEST, int, int); | |
72 | ||
d2e4a39e | 73 | static struct type *desc_base_type (struct type *); |
14f9c5c9 | 74 | |
d2e4a39e | 75 | static struct type *desc_bounds_type (struct type *); |
14f9c5c9 | 76 | |
d2e4a39e | 77 | static struct value *desc_bounds (struct value *); |
14f9c5c9 | 78 | |
d2e4a39e | 79 | static int fat_pntr_bounds_bitpos (struct type *); |
14f9c5c9 | 80 | |
d2e4a39e | 81 | static int fat_pntr_bounds_bitsize (struct type *); |
14f9c5c9 | 82 | |
d2e4a39e | 83 | static struct type *desc_data_type (struct type *); |
14f9c5c9 | 84 | |
d2e4a39e | 85 | static struct value *desc_data (struct value *); |
14f9c5c9 | 86 | |
d2e4a39e | 87 | static int fat_pntr_data_bitpos (struct type *); |
14f9c5c9 | 88 | |
d2e4a39e | 89 | static int fat_pntr_data_bitsize (struct type *); |
14f9c5c9 | 90 | |
d2e4a39e | 91 | static struct value *desc_one_bound (struct value *, int, int); |
14f9c5c9 | 92 | |
d2e4a39e | 93 | static int desc_bound_bitpos (struct type *, int, int); |
14f9c5c9 | 94 | |
d2e4a39e | 95 | static int desc_bound_bitsize (struct type *, int, int); |
14f9c5c9 | 96 | |
d2e4a39e | 97 | static struct type *desc_index_type (struct type *, int); |
14f9c5c9 | 98 | |
d2e4a39e | 99 | static int desc_arity (struct type *); |
14f9c5c9 | 100 | |
d2e4a39e | 101 | static int ada_type_match (struct type *, struct type *, int); |
14f9c5c9 | 102 | |
d2e4a39e | 103 | static int ada_args_match (struct symbol *, struct value **, int); |
14f9c5c9 | 104 | |
4c4b4cd2 | 105 | static struct value *ensure_lval (struct value *, CORE_ADDR *); |
14f9c5c9 | 106 | |
d2e4a39e | 107 | static struct value *convert_actual (struct value *, struct type *, |
4c4b4cd2 | 108 | CORE_ADDR *); |
14f9c5c9 | 109 | |
d2e4a39e | 110 | static struct value *make_array_descriptor (struct type *, struct value *, |
4c4b4cd2 | 111 | CORE_ADDR *); |
14f9c5c9 | 112 | |
4c4b4cd2 | 113 | static void ada_add_block_symbols (struct obstack *, |
76a01679 | 114 | struct block *, const char *, |
4c4b4cd2 | 115 | domain_enum, struct objfile *, |
76a01679 | 116 | struct symtab *, int); |
14f9c5c9 | 117 | |
4c4b4cd2 | 118 | static int is_nonfunction (struct ada_symbol_info *, int); |
14f9c5c9 | 119 | |
76a01679 JB |
120 | static void add_defn_to_vec (struct obstack *, struct symbol *, |
121 | struct block *, struct symtab *); | |
14f9c5c9 | 122 | |
4c4b4cd2 PH |
123 | static int num_defns_collected (struct obstack *); |
124 | ||
125 | static struct ada_symbol_info *defns_collected (struct obstack *, int); | |
14f9c5c9 | 126 | |
d2e4a39e | 127 | static struct partial_symbol *ada_lookup_partial_symbol (struct partial_symtab |
76a01679 JB |
128 | *, const char *, int, |
129 | domain_enum, int); | |
14f9c5c9 | 130 | |
d2e4a39e | 131 | static struct symtab *symtab_for_sym (struct symbol *); |
14f9c5c9 | 132 | |
4c4b4cd2 | 133 | static struct value *resolve_subexp (struct expression **, int *, int, |
76a01679 | 134 | struct type *); |
14f9c5c9 | 135 | |
d2e4a39e | 136 | static void replace_operator_with_call (struct expression **, int, int, int, |
4c4b4cd2 | 137 | struct symbol *, struct block *); |
14f9c5c9 | 138 | |
d2e4a39e | 139 | static int possible_user_operator_p (enum exp_opcode, struct value **); |
14f9c5c9 | 140 | |
4c4b4cd2 PH |
141 | static char *ada_op_name (enum exp_opcode); |
142 | ||
143 | static const char *ada_decoded_op_name (enum exp_opcode); | |
14f9c5c9 | 144 | |
d2e4a39e | 145 | static int numeric_type_p (struct type *); |
14f9c5c9 | 146 | |
d2e4a39e | 147 | static int integer_type_p (struct type *); |
14f9c5c9 | 148 | |
d2e4a39e | 149 | static int scalar_type_p (struct type *); |
14f9c5c9 | 150 | |
d2e4a39e | 151 | static int discrete_type_p (struct type *); |
14f9c5c9 | 152 | |
4c4b4cd2 | 153 | static struct type *ada_lookup_struct_elt_type (struct type *, char *, |
76a01679 | 154 | int, int, int *); |
4c4b4cd2 | 155 | |
d2e4a39e | 156 | static struct value *evaluate_subexp (struct type *, struct expression *, |
4c4b4cd2 | 157 | int *, enum noside); |
14f9c5c9 | 158 | |
d2e4a39e | 159 | static struct value *evaluate_subexp_type (struct expression *, int *); |
14f9c5c9 | 160 | |
d2e4a39e | 161 | static int is_dynamic_field (struct type *, int); |
14f9c5c9 | 162 | |
d2e4a39e | 163 | static struct type *to_fixed_variant_branch_type (struct type *, char *, |
4c4b4cd2 PH |
164 | CORE_ADDR, struct value *); |
165 | ||
166 | static struct type *to_fixed_array_type (struct type *, struct value *, int); | |
14f9c5c9 | 167 | |
d2e4a39e | 168 | static struct type *to_fixed_range_type (char *, struct value *, |
4c4b4cd2 | 169 | struct objfile *); |
14f9c5c9 | 170 | |
d2e4a39e | 171 | static struct type *to_static_fixed_type (struct type *); |
14f9c5c9 | 172 | |
d2e4a39e | 173 | static struct value *unwrap_value (struct value *); |
14f9c5c9 | 174 | |
d2e4a39e | 175 | static struct type *packed_array_type (struct type *, long *); |
14f9c5c9 | 176 | |
d2e4a39e | 177 | static struct type *decode_packed_array_type (struct type *); |
14f9c5c9 | 178 | |
d2e4a39e | 179 | static struct value *decode_packed_array (struct value *); |
14f9c5c9 | 180 | |
d2e4a39e | 181 | static struct value *value_subscript_packed (struct value *, int, |
4c4b4cd2 | 182 | struct value **); |
14f9c5c9 | 183 | |
4c4b4cd2 PH |
184 | static struct value *coerce_unspec_val_to_type (struct value *, |
185 | struct type *); | |
14f9c5c9 | 186 | |
d2e4a39e | 187 | static struct value *get_var_value (char *, char *); |
14f9c5c9 | 188 | |
d2e4a39e | 189 | static int lesseq_defined_than (struct symbol *, struct symbol *); |
14f9c5c9 | 190 | |
d2e4a39e | 191 | static int equiv_types (struct type *, struct type *); |
14f9c5c9 | 192 | |
d2e4a39e | 193 | static int is_name_suffix (const char *); |
14f9c5c9 | 194 | |
d2e4a39e | 195 | static int wild_match (const char *, int, const char *); |
14f9c5c9 | 196 | |
d2e4a39e | 197 | static struct value *ada_coerce_ref (struct value *); |
14f9c5c9 | 198 | |
4c4b4cd2 PH |
199 | static LONGEST pos_atr (struct value *); |
200 | ||
d2e4a39e | 201 | static struct value *value_pos_atr (struct value *); |
14f9c5c9 | 202 | |
d2e4a39e | 203 | static struct value *value_val_atr (struct type *, struct value *); |
14f9c5c9 | 204 | |
4c4b4cd2 PH |
205 | static struct symbol *standard_lookup (const char *, const struct block *, |
206 | domain_enum); | |
14f9c5c9 | 207 | |
4c4b4cd2 PH |
208 | static struct value *ada_search_struct_field (char *, struct value *, int, |
209 | struct type *); | |
210 | ||
211 | static struct value *ada_value_primitive_field (struct value *, int, int, | |
212 | struct type *); | |
213 | ||
76a01679 JB |
214 | static int find_struct_field (char *, struct type *, int, |
215 | struct type **, int *, int *, int *); | |
4c4b4cd2 PH |
216 | |
217 | static struct value *ada_to_fixed_value_create (struct type *, CORE_ADDR, | |
218 | struct value *); | |
219 | ||
220 | static struct value *ada_to_fixed_value (struct value *); | |
14f9c5c9 | 221 | |
4c4b4cd2 PH |
222 | static int ada_resolve_function (struct ada_symbol_info *, int, |
223 | struct value **, int, const char *, | |
224 | struct type *); | |
225 | ||
226 | static struct value *ada_coerce_to_simple_array (struct value *); | |
227 | ||
228 | static int ada_is_direct_array_type (struct type *); | |
229 | ||
72d5681a PH |
230 | static void ada_language_arch_info (struct gdbarch *, |
231 | struct language_arch_info *); | |
4c4b4cd2 PH |
232 | \f |
233 | ||
76a01679 | 234 | |
4c4b4cd2 | 235 | /* Maximum-sized dynamic type. */ |
14f9c5c9 AS |
236 | static unsigned int varsize_limit; |
237 | ||
4c4b4cd2 PH |
238 | /* FIXME: brobecker/2003-09-17: No longer a const because it is |
239 | returned by a function that does not return a const char *. */ | |
240 | static char *ada_completer_word_break_characters = | |
241 | #ifdef VMS | |
242 | " \t\n!@#%^&*()+=|~`}{[]\";:?/,-"; | |
243 | #else | |
14f9c5c9 | 244 | " \t\n!@#$%^&*()+=|~`}{[]\";:?/,-"; |
4c4b4cd2 | 245 | #endif |
14f9c5c9 | 246 | |
4c4b4cd2 | 247 | /* The name of the symbol to use to get the name of the main subprogram. */ |
76a01679 | 248 | static const char ADA_MAIN_PROGRAM_SYMBOL_NAME[] |
4c4b4cd2 | 249 | = "__gnat_ada_main_program_name"; |
14f9c5c9 | 250 | |
4c4b4cd2 PH |
251 | /* The name of the runtime function called when an exception is raised. */ |
252 | static const char raise_sym_name[] = "__gnat_raise_nodefer_with_msg"; | |
14f9c5c9 | 253 | |
4c4b4cd2 PH |
254 | /* The name of the runtime function called when an unhandled exception |
255 | is raised. */ | |
256 | static const char raise_unhandled_sym_name[] = "__gnat_unhandled_exception"; | |
257 | ||
258 | /* The name of the runtime function called when an assert failure is | |
259 | raised. */ | |
260 | static const char raise_assert_sym_name[] = | |
261 | "system__assertions__raise_assert_failure"; | |
262 | ||
263 | /* When GDB stops on an unhandled exception, GDB will go up the stack until | |
264 | if finds a frame corresponding to this function, in order to extract the | |
265 | name of the exception that has been raised from one of the parameters. */ | |
266 | static const char process_raise_exception_name[] = | |
267 | "ada__exceptions__process_raise_exception"; | |
268 | ||
269 | /* A string that reflects the longest exception expression rewrite, | |
270 | aside from the exception name. */ | |
271 | static const char longest_exception_template[] = | |
272 | "'__gnat_raise_nodefer_with_msg' if long_integer(e) = long_integer(&)"; | |
273 | ||
274 | /* Limit on the number of warnings to raise per expression evaluation. */ | |
275 | static int warning_limit = 2; | |
276 | ||
277 | /* Number of warning messages issued; reset to 0 by cleanups after | |
278 | expression evaluation. */ | |
279 | static int warnings_issued = 0; | |
280 | ||
281 | static const char *known_runtime_file_name_patterns[] = { | |
282 | ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS NULL | |
283 | }; | |
284 | ||
285 | static const char *known_auxiliary_function_name_patterns[] = { | |
286 | ADA_KNOWN_AUXILIARY_FUNCTION_NAME_PATTERNS NULL | |
287 | }; | |
288 | ||
289 | /* Space for allocating results of ada_lookup_symbol_list. */ | |
290 | static struct obstack symbol_list_obstack; | |
291 | ||
292 | /* Utilities */ | |
293 | ||
96d887e8 | 294 | |
4c4b4cd2 PH |
295 | static char * |
296 | ada_get_gdb_completer_word_break_characters (void) | |
297 | { | |
298 | return ada_completer_word_break_characters; | |
299 | } | |
300 | ||
301 | /* Read the string located at ADDR from the inferior and store the | |
302 | result into BUF. */ | |
303 | ||
304 | static void | |
14f9c5c9 AS |
305 | extract_string (CORE_ADDR addr, char *buf) |
306 | { | |
d2e4a39e | 307 | int char_index = 0; |
14f9c5c9 | 308 | |
4c4b4cd2 PH |
309 | /* Loop, reading one byte at a time, until we reach the '\000' |
310 | end-of-string marker. */ | |
d2e4a39e AS |
311 | do |
312 | { | |
313 | target_read_memory (addr + char_index * sizeof (char), | |
4c4b4cd2 | 314 | buf + char_index * sizeof (char), sizeof (char)); |
d2e4a39e AS |
315 | char_index++; |
316 | } | |
317 | while (buf[char_index - 1] != '\000'); | |
14f9c5c9 AS |
318 | } |
319 | ||
320 | /* Assuming *OLD_VECT points to an array of *SIZE objects of size | |
321 | ELEMENT_SIZE, grow it to contain at least MIN_SIZE objects, | |
4c4b4cd2 | 322 | updating *OLD_VECT and *SIZE as necessary. */ |
14f9c5c9 AS |
323 | |
324 | void | |
d2e4a39e | 325 | grow_vect (void **old_vect, size_t * size, size_t min_size, int element_size) |
14f9c5c9 | 326 | { |
d2e4a39e AS |
327 | if (*size < min_size) |
328 | { | |
329 | *size *= 2; | |
330 | if (*size < min_size) | |
4c4b4cd2 | 331 | *size = min_size; |
d2e4a39e AS |
332 | *old_vect = xrealloc (*old_vect, *size * element_size); |
333 | } | |
14f9c5c9 AS |
334 | } |
335 | ||
336 | /* True (non-zero) iff TARGET matches FIELD_NAME up to any trailing | |
4c4b4cd2 | 337 | suffix of FIELD_NAME beginning "___". */ |
14f9c5c9 AS |
338 | |
339 | static int | |
ebf56fd3 | 340 | field_name_match (const char *field_name, const char *target) |
14f9c5c9 AS |
341 | { |
342 | int len = strlen (target); | |
d2e4a39e | 343 | return |
4c4b4cd2 PH |
344 | (strncmp (field_name, target, len) == 0 |
345 | && (field_name[len] == '\0' | |
346 | || (strncmp (field_name + len, "___", 3) == 0 | |
76a01679 JB |
347 | && strcmp (field_name + strlen (field_name) - 6, |
348 | "___XVN") != 0))); | |
14f9c5c9 AS |
349 | } |
350 | ||
351 | ||
4c4b4cd2 PH |
352 | /* Assuming TYPE is a TYPE_CODE_STRUCT, find the field whose name matches |
353 | FIELD_NAME, and return its index. This function also handles fields | |
354 | whose name have ___ suffixes because the compiler sometimes alters | |
355 | their name by adding such a suffix to represent fields with certain | |
356 | constraints. If the field could not be found, return a negative | |
357 | number if MAYBE_MISSING is set. Otherwise raise an error. */ | |
358 | ||
359 | int | |
360 | ada_get_field_index (const struct type *type, const char *field_name, | |
361 | int maybe_missing) | |
362 | { | |
363 | int fieldno; | |
364 | for (fieldno = 0; fieldno < TYPE_NFIELDS (type); fieldno++) | |
365 | if (field_name_match (TYPE_FIELD_NAME (type, fieldno), field_name)) | |
366 | return fieldno; | |
367 | ||
368 | if (!maybe_missing) | |
369 | error ("Unable to find field %s in struct %s. Aborting", | |
370 | field_name, TYPE_NAME (type)); | |
371 | ||
372 | return -1; | |
373 | } | |
374 | ||
375 | /* The length of the prefix of NAME prior to any "___" suffix. */ | |
14f9c5c9 AS |
376 | |
377 | int | |
d2e4a39e | 378 | ada_name_prefix_len (const char *name) |
14f9c5c9 AS |
379 | { |
380 | if (name == NULL) | |
381 | return 0; | |
d2e4a39e | 382 | else |
14f9c5c9 | 383 | { |
d2e4a39e | 384 | const char *p = strstr (name, "___"); |
14f9c5c9 | 385 | if (p == NULL) |
4c4b4cd2 | 386 | return strlen (name); |
14f9c5c9 | 387 | else |
4c4b4cd2 | 388 | return p - name; |
14f9c5c9 AS |
389 | } |
390 | } | |
391 | ||
4c4b4cd2 PH |
392 | /* Return non-zero if SUFFIX is a suffix of STR. |
393 | Return zero if STR is null. */ | |
394 | ||
14f9c5c9 | 395 | static int |
d2e4a39e | 396 | is_suffix (const char *str, const char *suffix) |
14f9c5c9 AS |
397 | { |
398 | int len1, len2; | |
399 | if (str == NULL) | |
400 | return 0; | |
401 | len1 = strlen (str); | |
402 | len2 = strlen (suffix); | |
4c4b4cd2 | 403 | return (len1 >= len2 && strcmp (str + len1 - len2, suffix) == 0); |
14f9c5c9 AS |
404 | } |
405 | ||
406 | /* Create a value of type TYPE whose contents come from VALADDR, if it | |
4c4b4cd2 PH |
407 | is non-null, and whose memory address (in the inferior) is |
408 | ADDRESS. */ | |
409 | ||
d2e4a39e AS |
410 | struct value * |
411 | value_from_contents_and_address (struct type *type, char *valaddr, | |
4c4b4cd2 | 412 | CORE_ADDR address) |
14f9c5c9 | 413 | { |
d2e4a39e AS |
414 | struct value *v = allocate_value (type); |
415 | if (valaddr == NULL) | |
14f9c5c9 AS |
416 | VALUE_LAZY (v) = 1; |
417 | else | |
418 | memcpy (VALUE_CONTENTS_RAW (v), valaddr, TYPE_LENGTH (type)); | |
419 | VALUE_ADDRESS (v) = address; | |
420 | if (address != 0) | |
421 | VALUE_LVAL (v) = lval_memory; | |
422 | return v; | |
423 | } | |
424 | ||
4c4b4cd2 PH |
425 | /* The contents of value VAL, treated as a value of type TYPE. The |
426 | result is an lval in memory if VAL is. */ | |
14f9c5c9 | 427 | |
d2e4a39e | 428 | static struct value * |
4c4b4cd2 | 429 | coerce_unspec_val_to_type (struct value *val, struct type *type) |
14f9c5c9 | 430 | { |
61ee279c | 431 | type = ada_check_typedef (type); |
4c4b4cd2 PH |
432 | if (VALUE_TYPE (val) == type) |
433 | return val; | |
d2e4a39e | 434 | else |
14f9c5c9 | 435 | { |
4c4b4cd2 PH |
436 | struct value *result; |
437 | ||
438 | /* Make sure that the object size is not unreasonable before | |
439 | trying to allocate some memory for it. */ | |
440 | if (TYPE_LENGTH (type) > varsize_limit) | |
441 | error ("object size is larger than varsize-limit"); | |
442 | ||
443 | result = allocate_value (type); | |
444 | VALUE_LVAL (result) = VALUE_LVAL (val); | |
445 | VALUE_BITSIZE (result) = VALUE_BITSIZE (val); | |
446 | VALUE_BITPOS (result) = VALUE_BITPOS (val); | |
447 | VALUE_ADDRESS (result) = VALUE_ADDRESS (val) + VALUE_OFFSET (val); | |
1265e4aa JB |
448 | if (VALUE_LAZY (val) |
449 | || TYPE_LENGTH (type) > TYPE_LENGTH (VALUE_TYPE (val))) | |
4c4b4cd2 | 450 | VALUE_LAZY (result) = 1; |
d2e4a39e | 451 | else |
4c4b4cd2 PH |
452 | memcpy (VALUE_CONTENTS_RAW (result), VALUE_CONTENTS (val), |
453 | TYPE_LENGTH (type)); | |
14f9c5c9 AS |
454 | return result; |
455 | } | |
456 | } | |
457 | ||
d2e4a39e AS |
458 | static char * |
459 | cond_offset_host (char *valaddr, long offset) | |
14f9c5c9 AS |
460 | { |
461 | if (valaddr == NULL) | |
462 | return NULL; | |
463 | else | |
464 | return valaddr + offset; | |
465 | } | |
466 | ||
467 | static CORE_ADDR | |
ebf56fd3 | 468 | cond_offset_target (CORE_ADDR address, long offset) |
14f9c5c9 AS |
469 | { |
470 | if (address == 0) | |
471 | return 0; | |
d2e4a39e | 472 | else |
14f9c5c9 AS |
473 | return address + offset; |
474 | } | |
475 | ||
4c4b4cd2 PH |
476 | /* Issue a warning (as for the definition of warning in utils.c, but |
477 | with exactly one argument rather than ...), unless the limit on the | |
478 | number of warnings has passed during the evaluation of the current | |
479 | expression. */ | |
14f9c5c9 | 480 | static void |
4c4b4cd2 | 481 | lim_warning (const char *format, long arg) |
14f9c5c9 | 482 | { |
4c4b4cd2 PH |
483 | warnings_issued += 1; |
484 | if (warnings_issued <= warning_limit) | |
485 | warning (format, arg); | |
486 | } | |
487 | ||
c3e5cd34 PH |
488 | /* Note: would have used MAX_OF_TYPE and MIN_OF_TYPE macros from |
489 | gdbtypes.h, but some of the necessary definitions in that file | |
490 | seem to have gone missing. */ | |
491 | ||
492 | /* Maximum value of a SIZE-byte signed integer type. */ | |
4c4b4cd2 | 493 | static LONGEST |
c3e5cd34 | 494 | max_of_size (int size) |
4c4b4cd2 | 495 | { |
76a01679 JB |
496 | LONGEST top_bit = (LONGEST) 1 << (size * 8 - 2); |
497 | return top_bit | (top_bit - 1); | |
4c4b4cd2 PH |
498 | } |
499 | ||
c3e5cd34 | 500 | /* Minimum value of a SIZE-byte signed integer type. */ |
4c4b4cd2 | 501 | static LONGEST |
c3e5cd34 | 502 | min_of_size (int size) |
4c4b4cd2 | 503 | { |
c3e5cd34 | 504 | return -max_of_size (size) - 1; |
4c4b4cd2 PH |
505 | } |
506 | ||
c3e5cd34 | 507 | /* Maximum value of a SIZE-byte unsigned integer type. */ |
4c4b4cd2 | 508 | static ULONGEST |
c3e5cd34 | 509 | umax_of_size (int size) |
4c4b4cd2 | 510 | { |
76a01679 JB |
511 | ULONGEST top_bit = (ULONGEST) 1 << (size * 8 - 1); |
512 | return top_bit | (top_bit - 1); | |
4c4b4cd2 PH |
513 | } |
514 | ||
c3e5cd34 PH |
515 | /* Maximum value of integral type T, as a signed quantity. */ |
516 | static LONGEST | |
517 | max_of_type (struct type *t) | |
4c4b4cd2 | 518 | { |
c3e5cd34 PH |
519 | if (TYPE_UNSIGNED (t)) |
520 | return (LONGEST) umax_of_size (TYPE_LENGTH (t)); | |
521 | else | |
522 | return max_of_size (TYPE_LENGTH (t)); | |
523 | } | |
524 | ||
525 | /* Minimum value of integral type T, as a signed quantity. */ | |
526 | static LONGEST | |
527 | min_of_type (struct type *t) | |
528 | { | |
529 | if (TYPE_UNSIGNED (t)) | |
530 | return 0; | |
531 | else | |
532 | return min_of_size (TYPE_LENGTH (t)); | |
4c4b4cd2 PH |
533 | } |
534 | ||
535 | /* The largest value in the domain of TYPE, a discrete type, as an integer. */ | |
536 | static struct value * | |
537 | discrete_type_high_bound (struct type *type) | |
538 | { | |
76a01679 | 539 | switch (TYPE_CODE (type)) |
4c4b4cd2 PH |
540 | { |
541 | case TYPE_CODE_RANGE: | |
542 | return value_from_longest (TYPE_TARGET_TYPE (type), | |
76a01679 | 543 | TYPE_HIGH_BOUND (type)); |
4c4b4cd2 | 544 | case TYPE_CODE_ENUM: |
76a01679 JB |
545 | return |
546 | value_from_longest (type, | |
547 | TYPE_FIELD_BITPOS (type, | |
548 | TYPE_NFIELDS (type) - 1)); | |
549 | case TYPE_CODE_INT: | |
c3e5cd34 | 550 | return value_from_longest (type, max_of_type (type)); |
4c4b4cd2 PH |
551 | default: |
552 | error ("Unexpected type in discrete_type_high_bound."); | |
553 | } | |
554 | } | |
555 | ||
556 | /* The largest value in the domain of TYPE, a discrete type, as an integer. */ | |
557 | static struct value * | |
558 | discrete_type_low_bound (struct type *type) | |
559 | { | |
76a01679 | 560 | switch (TYPE_CODE (type)) |
4c4b4cd2 PH |
561 | { |
562 | case TYPE_CODE_RANGE: | |
563 | return value_from_longest (TYPE_TARGET_TYPE (type), | |
76a01679 | 564 | TYPE_LOW_BOUND (type)); |
4c4b4cd2 | 565 | case TYPE_CODE_ENUM: |
76a01679 JB |
566 | return value_from_longest (type, TYPE_FIELD_BITPOS (type, 0)); |
567 | case TYPE_CODE_INT: | |
c3e5cd34 | 568 | return value_from_longest (type, min_of_type (type)); |
4c4b4cd2 PH |
569 | default: |
570 | error ("Unexpected type in discrete_type_low_bound."); | |
571 | } | |
572 | } | |
573 | ||
574 | /* The identity on non-range types. For range types, the underlying | |
76a01679 | 575 | non-range scalar type. */ |
4c4b4cd2 PH |
576 | |
577 | static struct type * | |
578 | base_type (struct type *type) | |
579 | { | |
580 | while (type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE) | |
581 | { | |
76a01679 JB |
582 | if (type == TYPE_TARGET_TYPE (type) || TYPE_TARGET_TYPE (type) == NULL) |
583 | return type; | |
4c4b4cd2 PH |
584 | type = TYPE_TARGET_TYPE (type); |
585 | } | |
586 | return type; | |
14f9c5c9 | 587 | } |
4c4b4cd2 | 588 | \f |
76a01679 | 589 | |
4c4b4cd2 | 590 | /* Language Selection */ |
14f9c5c9 AS |
591 | |
592 | /* If the main program is in Ada, return language_ada, otherwise return LANG | |
593 | (the main program is in Ada iif the adainit symbol is found). | |
594 | ||
4c4b4cd2 | 595 | MAIN_PST is not used. */ |
d2e4a39e | 596 | |
14f9c5c9 | 597 | enum language |
d2e4a39e | 598 | ada_update_initial_language (enum language lang, |
4c4b4cd2 | 599 | struct partial_symtab *main_pst) |
14f9c5c9 | 600 | { |
d2e4a39e | 601 | if (lookup_minimal_symbol ("adainit", (const char *) NULL, |
4c4b4cd2 PH |
602 | (struct objfile *) NULL) != NULL) |
603 | return language_ada; | |
14f9c5c9 AS |
604 | |
605 | return lang; | |
606 | } | |
96d887e8 PH |
607 | |
608 | /* If the main procedure is written in Ada, then return its name. | |
609 | The result is good until the next call. Return NULL if the main | |
610 | procedure doesn't appear to be in Ada. */ | |
611 | ||
612 | char * | |
613 | ada_main_name (void) | |
614 | { | |
615 | struct minimal_symbol *msym; | |
616 | CORE_ADDR main_program_name_addr; | |
617 | static char main_program_name[1024]; | |
6c038f32 | 618 | |
96d887e8 PH |
619 | /* For Ada, the name of the main procedure is stored in a specific |
620 | string constant, generated by the binder. Look for that symbol, | |
621 | extract its address, and then read that string. If we didn't find | |
622 | that string, then most probably the main procedure is not written | |
623 | in Ada. */ | |
624 | msym = lookup_minimal_symbol (ADA_MAIN_PROGRAM_SYMBOL_NAME, NULL, NULL); | |
625 | ||
626 | if (msym != NULL) | |
627 | { | |
628 | main_program_name_addr = SYMBOL_VALUE_ADDRESS (msym); | |
629 | if (main_program_name_addr == 0) | |
630 | error ("Invalid address for Ada main program name."); | |
631 | ||
632 | extract_string (main_program_name_addr, main_program_name); | |
633 | return main_program_name; | |
634 | } | |
635 | ||
636 | /* The main procedure doesn't seem to be in Ada. */ | |
637 | return NULL; | |
638 | } | |
14f9c5c9 | 639 | \f |
4c4b4cd2 | 640 | /* Symbols */ |
d2e4a39e | 641 | |
4c4b4cd2 PH |
642 | /* Table of Ada operators and their GNAT-encoded names. Last entry is pair |
643 | of NULLs. */ | |
14f9c5c9 | 644 | |
d2e4a39e AS |
645 | const struct ada_opname_map ada_opname_table[] = { |
646 | {"Oadd", "\"+\"", BINOP_ADD}, | |
647 | {"Osubtract", "\"-\"", BINOP_SUB}, | |
648 | {"Omultiply", "\"*\"", BINOP_MUL}, | |
649 | {"Odivide", "\"/\"", BINOP_DIV}, | |
650 | {"Omod", "\"mod\"", BINOP_MOD}, | |
651 | {"Orem", "\"rem\"", BINOP_REM}, | |
652 | {"Oexpon", "\"**\"", BINOP_EXP}, | |
653 | {"Olt", "\"<\"", BINOP_LESS}, | |
654 | {"Ole", "\"<=\"", BINOP_LEQ}, | |
655 | {"Ogt", "\">\"", BINOP_GTR}, | |
656 | {"Oge", "\">=\"", BINOP_GEQ}, | |
657 | {"Oeq", "\"=\"", BINOP_EQUAL}, | |
658 | {"One", "\"/=\"", BINOP_NOTEQUAL}, | |
659 | {"Oand", "\"and\"", BINOP_BITWISE_AND}, | |
660 | {"Oor", "\"or\"", BINOP_BITWISE_IOR}, | |
661 | {"Oxor", "\"xor\"", BINOP_BITWISE_XOR}, | |
662 | {"Oconcat", "\"&\"", BINOP_CONCAT}, | |
663 | {"Oabs", "\"abs\"", UNOP_ABS}, | |
664 | {"Onot", "\"not\"", UNOP_LOGICAL_NOT}, | |
665 | {"Oadd", "\"+\"", UNOP_PLUS}, | |
666 | {"Osubtract", "\"-\"", UNOP_NEG}, | |
667 | {NULL, NULL} | |
14f9c5c9 AS |
668 | }; |
669 | ||
4c4b4cd2 PH |
670 | /* Return non-zero if STR should be suppressed in info listings. */ |
671 | ||
14f9c5c9 | 672 | static int |
d2e4a39e | 673 | is_suppressed_name (const char *str) |
14f9c5c9 | 674 | { |
4c4b4cd2 | 675 | if (strncmp (str, "_ada_", 5) == 0) |
14f9c5c9 AS |
676 | str += 5; |
677 | if (str[0] == '_' || str[0] == '\000') | |
678 | return 1; | |
679 | else | |
680 | { | |
d2e4a39e AS |
681 | const char *p; |
682 | const char *suffix = strstr (str, "___"); | |
14f9c5c9 | 683 | if (suffix != NULL && suffix[3] != 'X') |
4c4b4cd2 | 684 | return 1; |
14f9c5c9 | 685 | if (suffix == NULL) |
4c4b4cd2 | 686 | suffix = str + strlen (str); |
d2e4a39e | 687 | for (p = suffix - 1; p != str; p -= 1) |
4c4b4cd2 PH |
688 | if (isupper (*p)) |
689 | { | |
690 | int i; | |
691 | if (p[0] == 'X' && p[-1] != '_') | |
692 | goto OK; | |
693 | if (*p != 'O') | |
694 | return 1; | |
695 | for (i = 0; ada_opname_table[i].encoded != NULL; i += 1) | |
696 | if (strncmp (ada_opname_table[i].encoded, p, | |
697 | strlen (ada_opname_table[i].encoded)) == 0) | |
698 | goto OK; | |
699 | return 1; | |
700 | OK:; | |
701 | } | |
14f9c5c9 AS |
702 | return 0; |
703 | } | |
704 | } | |
705 | ||
4c4b4cd2 PH |
706 | /* The "encoded" form of DECODED, according to GNAT conventions. |
707 | The result is valid until the next call to ada_encode. */ | |
708 | ||
14f9c5c9 | 709 | char * |
4c4b4cd2 | 710 | ada_encode (const char *decoded) |
14f9c5c9 | 711 | { |
4c4b4cd2 PH |
712 | static char *encoding_buffer = NULL; |
713 | static size_t encoding_buffer_size = 0; | |
d2e4a39e | 714 | const char *p; |
14f9c5c9 | 715 | int k; |
d2e4a39e | 716 | |
4c4b4cd2 | 717 | if (decoded == NULL) |
14f9c5c9 AS |
718 | return NULL; |
719 | ||
4c4b4cd2 PH |
720 | GROW_VECT (encoding_buffer, encoding_buffer_size, |
721 | 2 * strlen (decoded) + 10); | |
14f9c5c9 AS |
722 | |
723 | k = 0; | |
4c4b4cd2 | 724 | for (p = decoded; *p != '\0'; p += 1) |
14f9c5c9 | 725 | { |
4c4b4cd2 PH |
726 | if (!ADA_RETAIN_DOTS && *p == '.') |
727 | { | |
728 | encoding_buffer[k] = encoding_buffer[k + 1] = '_'; | |
729 | k += 2; | |
730 | } | |
14f9c5c9 | 731 | else if (*p == '"') |
4c4b4cd2 PH |
732 | { |
733 | const struct ada_opname_map *mapping; | |
734 | ||
735 | for (mapping = ada_opname_table; | |
1265e4aa JB |
736 | mapping->encoded != NULL |
737 | && strncmp (mapping->decoded, p, | |
738 | strlen (mapping->decoded)) != 0; mapping += 1) | |
4c4b4cd2 PH |
739 | ; |
740 | if (mapping->encoded == NULL) | |
741 | error ("invalid Ada operator name: %s", p); | |
742 | strcpy (encoding_buffer + k, mapping->encoded); | |
743 | k += strlen (mapping->encoded); | |
744 | break; | |
745 | } | |
d2e4a39e | 746 | else |
4c4b4cd2 PH |
747 | { |
748 | encoding_buffer[k] = *p; | |
749 | k += 1; | |
750 | } | |
14f9c5c9 AS |
751 | } |
752 | ||
4c4b4cd2 PH |
753 | encoding_buffer[k] = '\0'; |
754 | return encoding_buffer; | |
14f9c5c9 AS |
755 | } |
756 | ||
757 | /* Return NAME folded to lower case, or, if surrounded by single | |
4c4b4cd2 PH |
758 | quotes, unfolded, but with the quotes stripped away. Result good |
759 | to next call. */ | |
760 | ||
d2e4a39e AS |
761 | char * |
762 | ada_fold_name (const char *name) | |
14f9c5c9 | 763 | { |
d2e4a39e | 764 | static char *fold_buffer = NULL; |
14f9c5c9 AS |
765 | static size_t fold_buffer_size = 0; |
766 | ||
767 | int len = strlen (name); | |
d2e4a39e | 768 | GROW_VECT (fold_buffer, fold_buffer_size, len + 1); |
14f9c5c9 AS |
769 | |
770 | if (name[0] == '\'') | |
771 | { | |
d2e4a39e AS |
772 | strncpy (fold_buffer, name + 1, len - 2); |
773 | fold_buffer[len - 2] = '\000'; | |
14f9c5c9 AS |
774 | } |
775 | else | |
776 | { | |
777 | int i; | |
778 | for (i = 0; i <= len; i += 1) | |
4c4b4cd2 | 779 | fold_buffer[i] = tolower (name[i]); |
14f9c5c9 AS |
780 | } |
781 | ||
782 | return fold_buffer; | |
783 | } | |
784 | ||
4c4b4cd2 PH |
785 | /* decode: |
786 | 0. Discard trailing .{DIGIT}+ or trailing ___{DIGIT}+ | |
787 | These are suffixes introduced by GNAT5 to nested subprogram | |
788 | names, and do not serve any purpose for the debugger. | |
789 | 1. Discard final __{DIGIT}+ or $({DIGIT}+(__{DIGIT}+)*) | |
14f9c5c9 AS |
790 | 2. Convert other instances of embedded "__" to `.'. |
791 | 3. Discard leading _ada_. | |
792 | 4. Convert operator names to the appropriate quoted symbols. | |
4c4b4cd2 | 793 | 5. Remove everything after first ___ if it is followed by |
14f9c5c9 AS |
794 | 'X'. |
795 | 6. Replace TK__ with __, and a trailing B or TKB with nothing. | |
796 | 7. Put symbols that should be suppressed in <...> brackets. | |
797 | 8. Remove trailing X[bn]* suffix (indicating names in package bodies). | |
14f9c5c9 | 798 | |
4c4b4cd2 PH |
799 | The resulting string is valid until the next call of ada_decode. |
800 | If the string is unchanged by demangling, the original string pointer | |
801 | is returned. */ | |
802 | ||
803 | const char * | |
804 | ada_decode (const char *encoded) | |
14f9c5c9 AS |
805 | { |
806 | int i, j; | |
807 | int len0; | |
d2e4a39e | 808 | const char *p; |
4c4b4cd2 | 809 | char *decoded; |
14f9c5c9 | 810 | int at_start_name; |
4c4b4cd2 PH |
811 | static char *decoding_buffer = NULL; |
812 | static size_t decoding_buffer_size = 0; | |
d2e4a39e | 813 | |
4c4b4cd2 PH |
814 | if (strncmp (encoded, "_ada_", 5) == 0) |
815 | encoded += 5; | |
14f9c5c9 | 816 | |
4c4b4cd2 | 817 | if (encoded[0] == '_' || encoded[0] == '<') |
14f9c5c9 AS |
818 | goto Suppress; |
819 | ||
4c4b4cd2 PH |
820 | /* Remove trailing .{DIGIT}+ or ___{DIGIT}+. */ |
821 | len0 = strlen (encoded); | |
822 | if (len0 > 1 && isdigit (encoded[len0 - 1])) | |
823 | { | |
824 | i = len0 - 2; | |
825 | while (i > 0 && isdigit (encoded[i])) | |
826 | i--; | |
827 | if (i >= 0 && encoded[i] == '.') | |
828 | len0 = i; | |
829 | else if (i >= 2 && strncmp (encoded + i - 2, "___", 3) == 0) | |
830 | len0 = i - 2; | |
831 | } | |
832 | ||
833 | /* Remove the ___X.* suffix if present. Do not forget to verify that | |
834 | the suffix is located before the current "end" of ENCODED. We want | |
835 | to avoid re-matching parts of ENCODED that have previously been | |
836 | marked as discarded (by decrementing LEN0). */ | |
837 | p = strstr (encoded, "___"); | |
838 | if (p != NULL && p - encoded < len0 - 3) | |
14f9c5c9 AS |
839 | { |
840 | if (p[3] == 'X') | |
4c4b4cd2 | 841 | len0 = p - encoded; |
14f9c5c9 | 842 | else |
4c4b4cd2 | 843 | goto Suppress; |
14f9c5c9 | 844 | } |
4c4b4cd2 PH |
845 | |
846 | if (len0 > 3 && strncmp (encoded + len0 - 3, "TKB", 3) == 0) | |
14f9c5c9 | 847 | len0 -= 3; |
76a01679 | 848 | |
4c4b4cd2 | 849 | if (len0 > 1 && strncmp (encoded + len0 - 1, "B", 1) == 0) |
14f9c5c9 AS |
850 | len0 -= 1; |
851 | ||
4c4b4cd2 PH |
852 | /* Make decoded big enough for possible expansion by operator name. */ |
853 | GROW_VECT (decoding_buffer, decoding_buffer_size, 2 * len0 + 1); | |
854 | decoded = decoding_buffer; | |
14f9c5c9 | 855 | |
4c4b4cd2 | 856 | if (len0 > 1 && isdigit (encoded[len0 - 1])) |
d2e4a39e | 857 | { |
4c4b4cd2 PH |
858 | i = len0 - 2; |
859 | while ((i >= 0 && isdigit (encoded[i])) | |
860 | || (i >= 1 && encoded[i] == '_' && isdigit (encoded[i - 1]))) | |
861 | i -= 1; | |
862 | if (i > 1 && encoded[i] == '_' && encoded[i - 1] == '_') | |
863 | len0 = i - 1; | |
864 | else if (encoded[i] == '$') | |
865 | len0 = i; | |
d2e4a39e | 866 | } |
14f9c5c9 | 867 | |
4c4b4cd2 PH |
868 | for (i = 0, j = 0; i < len0 && !isalpha (encoded[i]); i += 1, j += 1) |
869 | decoded[j] = encoded[i]; | |
14f9c5c9 AS |
870 | |
871 | at_start_name = 1; | |
872 | while (i < len0) | |
873 | { | |
4c4b4cd2 PH |
874 | if (at_start_name && encoded[i] == 'O') |
875 | { | |
876 | int k; | |
877 | for (k = 0; ada_opname_table[k].encoded != NULL; k += 1) | |
878 | { | |
879 | int op_len = strlen (ada_opname_table[k].encoded); | |
06d5cf63 JB |
880 | if ((strncmp (ada_opname_table[k].encoded + 1, encoded + i + 1, |
881 | op_len - 1) == 0) | |
882 | && !isalnum (encoded[i + op_len])) | |
4c4b4cd2 PH |
883 | { |
884 | strcpy (decoded + j, ada_opname_table[k].decoded); | |
885 | at_start_name = 0; | |
886 | i += op_len; | |
887 | j += strlen (ada_opname_table[k].decoded); | |
888 | break; | |
889 | } | |
890 | } | |
891 | if (ada_opname_table[k].encoded != NULL) | |
892 | continue; | |
893 | } | |
14f9c5c9 AS |
894 | at_start_name = 0; |
895 | ||
4c4b4cd2 PH |
896 | if (i < len0 - 4 && strncmp (encoded + i, "TK__", 4) == 0) |
897 | i += 2; | |
898 | if (encoded[i] == 'X' && i != 0 && isalnum (encoded[i - 1])) | |
899 | { | |
900 | do | |
901 | i += 1; | |
902 | while (i < len0 && (encoded[i] == 'b' || encoded[i] == 'n')); | |
903 | if (i < len0) | |
904 | goto Suppress; | |
905 | } | |
906 | else if (!ADA_RETAIN_DOTS | |
907 | && i < len0 - 2 && encoded[i] == '_' && encoded[i + 1] == '_') | |
908 | { | |
909 | decoded[j] = '.'; | |
910 | at_start_name = 1; | |
911 | i += 2; | |
912 | j += 1; | |
913 | } | |
14f9c5c9 | 914 | else |
4c4b4cd2 PH |
915 | { |
916 | decoded[j] = encoded[i]; | |
917 | i += 1; | |
918 | j += 1; | |
919 | } | |
14f9c5c9 | 920 | } |
4c4b4cd2 | 921 | decoded[j] = '\000'; |
14f9c5c9 | 922 | |
4c4b4cd2 PH |
923 | for (i = 0; decoded[i] != '\0'; i += 1) |
924 | if (isupper (decoded[i]) || decoded[i] == ' ') | |
14f9c5c9 AS |
925 | goto Suppress; |
926 | ||
4c4b4cd2 PH |
927 | if (strcmp (decoded, encoded) == 0) |
928 | return encoded; | |
929 | else | |
930 | return decoded; | |
14f9c5c9 AS |
931 | |
932 | Suppress: | |
4c4b4cd2 PH |
933 | GROW_VECT (decoding_buffer, decoding_buffer_size, strlen (encoded) + 3); |
934 | decoded = decoding_buffer; | |
935 | if (encoded[0] == '<') | |
936 | strcpy (decoded, encoded); | |
14f9c5c9 | 937 | else |
4c4b4cd2 PH |
938 | sprintf (decoded, "<%s>", encoded); |
939 | return decoded; | |
940 | ||
941 | } | |
942 | ||
943 | /* Table for keeping permanent unique copies of decoded names. Once | |
944 | allocated, names in this table are never released. While this is a | |
945 | storage leak, it should not be significant unless there are massive | |
946 | changes in the set of decoded names in successive versions of a | |
947 | symbol table loaded during a single session. */ | |
948 | static struct htab *decoded_names_store; | |
949 | ||
950 | /* Returns the decoded name of GSYMBOL, as for ada_decode, caching it | |
951 | in the language-specific part of GSYMBOL, if it has not been | |
952 | previously computed. Tries to save the decoded name in the same | |
953 | obstack as GSYMBOL, if possible, and otherwise on the heap (so that, | |
954 | in any case, the decoded symbol has a lifetime at least that of | |
955 | GSYMBOL). | |
956 | The GSYMBOL parameter is "mutable" in the C++ sense: logically | |
957 | const, but nevertheless modified to a semantically equivalent form | |
958 | when a decoded name is cached in it. | |
76a01679 | 959 | */ |
4c4b4cd2 | 960 | |
76a01679 JB |
961 | char * |
962 | ada_decode_symbol (const struct general_symbol_info *gsymbol) | |
4c4b4cd2 | 963 | { |
76a01679 | 964 | char **resultp = |
4c4b4cd2 PH |
965 | (char **) &gsymbol->language_specific.cplus_specific.demangled_name; |
966 | if (*resultp == NULL) | |
967 | { | |
968 | const char *decoded = ada_decode (gsymbol->name); | |
969 | if (gsymbol->bfd_section != NULL) | |
76a01679 JB |
970 | { |
971 | bfd *obfd = gsymbol->bfd_section->owner; | |
972 | if (obfd != NULL) | |
973 | { | |
974 | struct objfile *objf; | |
975 | ALL_OBJFILES (objf) | |
976 | { | |
977 | if (obfd == objf->obfd) | |
978 | { | |
979 | *resultp = obsavestring (decoded, strlen (decoded), | |
980 | &objf->objfile_obstack); | |
981 | break; | |
982 | } | |
983 | } | |
984 | } | |
985 | } | |
4c4b4cd2 | 986 | /* Sometimes, we can't find a corresponding objfile, in which |
76a01679 JB |
987 | case, we put the result on the heap. Since we only decode |
988 | when needed, we hope this usually does not cause a | |
989 | significant memory leak (FIXME). */ | |
4c4b4cd2 | 990 | if (*resultp == NULL) |
76a01679 JB |
991 | { |
992 | char **slot = (char **) htab_find_slot (decoded_names_store, | |
993 | decoded, INSERT); | |
994 | if (*slot == NULL) | |
995 | *slot = xstrdup (decoded); | |
996 | *resultp = *slot; | |
997 | } | |
4c4b4cd2 | 998 | } |
14f9c5c9 | 999 | |
4c4b4cd2 PH |
1000 | return *resultp; |
1001 | } | |
76a01679 JB |
1002 | |
1003 | char * | |
1004 | ada_la_decode (const char *encoded, int options) | |
4c4b4cd2 PH |
1005 | { |
1006 | return xstrdup (ada_decode (encoded)); | |
14f9c5c9 AS |
1007 | } |
1008 | ||
1009 | /* Returns non-zero iff SYM_NAME matches NAME, ignoring any trailing | |
4c4b4cd2 PH |
1010 | suffixes that encode debugging information or leading _ada_ on |
1011 | SYM_NAME (see is_name_suffix commentary for the debugging | |
1012 | information that is ignored). If WILD, then NAME need only match a | |
1013 | suffix of SYM_NAME minus the same suffixes. Also returns 0 if | |
1014 | either argument is NULL. */ | |
14f9c5c9 AS |
1015 | |
1016 | int | |
d2e4a39e | 1017 | ada_match_name (const char *sym_name, const char *name, int wild) |
14f9c5c9 AS |
1018 | { |
1019 | if (sym_name == NULL || name == NULL) | |
1020 | return 0; | |
1021 | else if (wild) | |
1022 | return wild_match (name, strlen (name), sym_name); | |
d2e4a39e AS |
1023 | else |
1024 | { | |
1025 | int len_name = strlen (name); | |
4c4b4cd2 PH |
1026 | return (strncmp (sym_name, name, len_name) == 0 |
1027 | && is_name_suffix (sym_name + len_name)) | |
1028 | || (strncmp (sym_name, "_ada_", 5) == 0 | |
1029 | && strncmp (sym_name + 5, name, len_name) == 0 | |
1030 | && is_name_suffix (sym_name + len_name + 5)); | |
d2e4a39e | 1031 | } |
14f9c5c9 AS |
1032 | } |
1033 | ||
4c4b4cd2 PH |
1034 | /* True (non-zero) iff, in Ada mode, the symbol SYM should be |
1035 | suppressed in info listings. */ | |
14f9c5c9 AS |
1036 | |
1037 | int | |
ebf56fd3 | 1038 | ada_suppress_symbol_printing (struct symbol *sym) |
14f9c5c9 | 1039 | { |
176620f1 | 1040 | if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN) |
14f9c5c9 | 1041 | return 1; |
d2e4a39e | 1042 | else |
4c4b4cd2 | 1043 | return is_suppressed_name (SYMBOL_LINKAGE_NAME (sym)); |
14f9c5c9 | 1044 | } |
14f9c5c9 | 1045 | \f |
d2e4a39e | 1046 | |
4c4b4cd2 | 1047 | /* Arrays */ |
14f9c5c9 | 1048 | |
4c4b4cd2 | 1049 | /* Names of MAX_ADA_DIMENS bounds in P_BOUNDS fields of array descriptors. */ |
14f9c5c9 | 1050 | |
d2e4a39e AS |
1051 | static char *bound_name[] = { |
1052 | "LB0", "UB0", "LB1", "UB1", "LB2", "UB2", "LB3", "UB3", | |
14f9c5c9 AS |
1053 | "LB4", "UB4", "LB5", "UB5", "LB6", "UB6", "LB7", "UB7" |
1054 | }; | |
1055 | ||
1056 | /* Maximum number of array dimensions we are prepared to handle. */ | |
1057 | ||
4c4b4cd2 | 1058 | #define MAX_ADA_DIMENS (sizeof(bound_name) / (2*sizeof(char *))) |
14f9c5c9 | 1059 | |
4c4b4cd2 | 1060 | /* Like modify_field, but allows bitpos > wordlength. */ |
14f9c5c9 AS |
1061 | |
1062 | static void | |
ebf56fd3 | 1063 | modify_general_field (char *addr, LONGEST fieldval, int bitpos, int bitsize) |
14f9c5c9 | 1064 | { |
4c4b4cd2 | 1065 | modify_field (addr + bitpos / 8, fieldval, bitpos % 8, bitsize); |
14f9c5c9 AS |
1066 | } |
1067 | ||
1068 | ||
4c4b4cd2 PH |
1069 | /* The desc_* routines return primitive portions of array descriptors |
1070 | (fat pointers). */ | |
14f9c5c9 AS |
1071 | |
1072 | /* The descriptor or array type, if any, indicated by TYPE; removes | |
4c4b4cd2 PH |
1073 | level of indirection, if needed. */ |
1074 | ||
d2e4a39e AS |
1075 | static struct type * |
1076 | desc_base_type (struct type *type) | |
14f9c5c9 AS |
1077 | { |
1078 | if (type == NULL) | |
1079 | return NULL; | |
61ee279c | 1080 | type = ada_check_typedef (type); |
1265e4aa JB |
1081 | if (type != NULL |
1082 | && (TYPE_CODE (type) == TYPE_CODE_PTR | |
1083 | || TYPE_CODE (type) == TYPE_CODE_REF)) | |
61ee279c | 1084 | return ada_check_typedef (TYPE_TARGET_TYPE (type)); |
14f9c5c9 AS |
1085 | else |
1086 | return type; | |
1087 | } | |
1088 | ||
4c4b4cd2 PH |
1089 | /* True iff TYPE indicates a "thin" array pointer type. */ |
1090 | ||
14f9c5c9 | 1091 | static int |
d2e4a39e | 1092 | is_thin_pntr (struct type *type) |
14f9c5c9 | 1093 | { |
d2e4a39e | 1094 | return |
14f9c5c9 AS |
1095 | is_suffix (ada_type_name (desc_base_type (type)), "___XUT") |
1096 | || is_suffix (ada_type_name (desc_base_type (type)), "___XUT___XVE"); | |
1097 | } | |
1098 | ||
4c4b4cd2 PH |
1099 | /* The descriptor type for thin pointer type TYPE. */ |
1100 | ||
d2e4a39e AS |
1101 | static struct type * |
1102 | thin_descriptor_type (struct type *type) | |
14f9c5c9 | 1103 | { |
d2e4a39e | 1104 | struct type *base_type = desc_base_type (type); |
14f9c5c9 AS |
1105 | if (base_type == NULL) |
1106 | return NULL; | |
1107 | if (is_suffix (ada_type_name (base_type), "___XVE")) | |
1108 | return base_type; | |
d2e4a39e | 1109 | else |
14f9c5c9 | 1110 | { |
d2e4a39e | 1111 | struct type *alt_type = ada_find_parallel_type (base_type, "___XVE"); |
14f9c5c9 | 1112 | if (alt_type == NULL) |
4c4b4cd2 | 1113 | return base_type; |
14f9c5c9 | 1114 | else |
4c4b4cd2 | 1115 | return alt_type; |
14f9c5c9 AS |
1116 | } |
1117 | } | |
1118 | ||
4c4b4cd2 PH |
1119 | /* A pointer to the array data for thin-pointer value VAL. */ |
1120 | ||
d2e4a39e AS |
1121 | static struct value * |
1122 | thin_data_pntr (struct value *val) | |
14f9c5c9 | 1123 | { |
d2e4a39e | 1124 | struct type *type = VALUE_TYPE (val); |
14f9c5c9 | 1125 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
d2e4a39e | 1126 | return value_cast (desc_data_type (thin_descriptor_type (type)), |
4c4b4cd2 | 1127 | value_copy (val)); |
d2e4a39e | 1128 | else |
14f9c5c9 | 1129 | return value_from_longest (desc_data_type (thin_descriptor_type (type)), |
4c4b4cd2 | 1130 | VALUE_ADDRESS (val) + VALUE_OFFSET (val)); |
14f9c5c9 AS |
1131 | } |
1132 | ||
4c4b4cd2 PH |
1133 | /* True iff TYPE indicates a "thick" array pointer type. */ |
1134 | ||
14f9c5c9 | 1135 | static int |
d2e4a39e | 1136 | is_thick_pntr (struct type *type) |
14f9c5c9 AS |
1137 | { |
1138 | type = desc_base_type (type); | |
1139 | return (type != NULL && TYPE_CODE (type) == TYPE_CODE_STRUCT | |
4c4b4cd2 | 1140 | && lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL); |
14f9c5c9 AS |
1141 | } |
1142 | ||
4c4b4cd2 PH |
1143 | /* If TYPE is the type of an array descriptor (fat or thin pointer) or a |
1144 | pointer to one, the type of its bounds data; otherwise, NULL. */ | |
76a01679 | 1145 | |
d2e4a39e AS |
1146 | static struct type * |
1147 | desc_bounds_type (struct type *type) | |
14f9c5c9 | 1148 | { |
d2e4a39e | 1149 | struct type *r; |
14f9c5c9 AS |
1150 | |
1151 | type = desc_base_type (type); | |
1152 | ||
1153 | if (type == NULL) | |
1154 | return NULL; | |
1155 | else if (is_thin_pntr (type)) | |
1156 | { | |
1157 | type = thin_descriptor_type (type); | |
1158 | if (type == NULL) | |
4c4b4cd2 | 1159 | return NULL; |
14f9c5c9 AS |
1160 | r = lookup_struct_elt_type (type, "BOUNDS", 1); |
1161 | if (r != NULL) | |
61ee279c | 1162 | return ada_check_typedef (r); |
14f9c5c9 AS |
1163 | } |
1164 | else if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
1165 | { | |
1166 | r = lookup_struct_elt_type (type, "P_BOUNDS", 1); | |
1167 | if (r != NULL) | |
61ee279c | 1168 | return ada_check_typedef (TYPE_TARGET_TYPE (ada_check_typedef (r))); |
14f9c5c9 AS |
1169 | } |
1170 | return NULL; | |
1171 | } | |
1172 | ||
1173 | /* If ARR is an array descriptor (fat or thin pointer), or pointer to | |
4c4b4cd2 PH |
1174 | one, a pointer to its bounds data. Otherwise NULL. */ |
1175 | ||
d2e4a39e AS |
1176 | static struct value * |
1177 | desc_bounds (struct value *arr) | |
14f9c5c9 | 1178 | { |
61ee279c | 1179 | struct type *type = ada_check_typedef (VALUE_TYPE (arr)); |
d2e4a39e | 1180 | if (is_thin_pntr (type)) |
14f9c5c9 | 1181 | { |
d2e4a39e | 1182 | struct type *bounds_type = |
4c4b4cd2 | 1183 | desc_bounds_type (thin_descriptor_type (type)); |
14f9c5c9 AS |
1184 | LONGEST addr; |
1185 | ||
1186 | if (desc_bounds_type == NULL) | |
4c4b4cd2 | 1187 | error ("Bad GNAT array descriptor"); |
14f9c5c9 AS |
1188 | |
1189 | /* NOTE: The following calculation is not really kosher, but | |
d2e4a39e | 1190 | since desc_type is an XVE-encoded type (and shouldn't be), |
4c4b4cd2 | 1191 | the correct calculation is a real pain. FIXME (and fix GCC). */ |
14f9c5c9 | 1192 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
4c4b4cd2 | 1193 | addr = value_as_long (arr); |
d2e4a39e | 1194 | else |
4c4b4cd2 | 1195 | addr = VALUE_ADDRESS (arr) + VALUE_OFFSET (arr); |
14f9c5c9 | 1196 | |
d2e4a39e | 1197 | return |
4c4b4cd2 PH |
1198 | value_from_longest (lookup_pointer_type (bounds_type), |
1199 | addr - TYPE_LENGTH (bounds_type)); | |
14f9c5c9 AS |
1200 | } |
1201 | ||
1202 | else if (is_thick_pntr (type)) | |
d2e4a39e | 1203 | return value_struct_elt (&arr, NULL, "P_BOUNDS", NULL, |
4c4b4cd2 | 1204 | "Bad GNAT array descriptor"); |
14f9c5c9 AS |
1205 | else |
1206 | return NULL; | |
1207 | } | |
1208 | ||
4c4b4cd2 PH |
1209 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit |
1210 | position of the field containing the address of the bounds data. */ | |
1211 | ||
14f9c5c9 | 1212 | static int |
d2e4a39e | 1213 | fat_pntr_bounds_bitpos (struct type *type) |
14f9c5c9 AS |
1214 | { |
1215 | return TYPE_FIELD_BITPOS (desc_base_type (type), 1); | |
1216 | } | |
1217 | ||
1218 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1219 | size of the field containing the address of the bounds data. */ |
1220 | ||
14f9c5c9 | 1221 | static int |
d2e4a39e | 1222 | fat_pntr_bounds_bitsize (struct type *type) |
14f9c5c9 AS |
1223 | { |
1224 | type = desc_base_type (type); | |
1225 | ||
d2e4a39e | 1226 | if (TYPE_FIELD_BITSIZE (type, 1) > 0) |
14f9c5c9 AS |
1227 | return TYPE_FIELD_BITSIZE (type, 1); |
1228 | else | |
61ee279c | 1229 | return 8 * TYPE_LENGTH (ada_check_typedef (TYPE_FIELD_TYPE (type, 1))); |
14f9c5c9 AS |
1230 | } |
1231 | ||
4c4b4cd2 | 1232 | /* If TYPE is the type of an array descriptor (fat or thin pointer) or a |
14f9c5c9 | 1233 | pointer to one, the type of its array data (a |
4c4b4cd2 PH |
1234 | pointer-to-array-with-no-bounds type); otherwise, NULL. Use |
1235 | ada_type_of_array to get an array type with bounds data. */ | |
1236 | ||
d2e4a39e AS |
1237 | static struct type * |
1238 | desc_data_type (struct type *type) | |
14f9c5c9 AS |
1239 | { |
1240 | type = desc_base_type (type); | |
1241 | ||
4c4b4cd2 | 1242 | /* NOTE: The following is bogus; see comment in desc_bounds. */ |
14f9c5c9 | 1243 | if (is_thin_pntr (type)) |
d2e4a39e AS |
1244 | return lookup_pointer_type |
1245 | (desc_base_type (TYPE_FIELD_TYPE (thin_descriptor_type (type), 1))); | |
14f9c5c9 AS |
1246 | else if (is_thick_pntr (type)) |
1247 | return lookup_struct_elt_type (type, "P_ARRAY", 1); | |
1248 | else | |
1249 | return NULL; | |
1250 | } | |
1251 | ||
1252 | /* If ARR is an array descriptor (fat or thin pointer), a pointer to | |
1253 | its array data. */ | |
4c4b4cd2 | 1254 | |
d2e4a39e AS |
1255 | static struct value * |
1256 | desc_data (struct value *arr) | |
14f9c5c9 | 1257 | { |
d2e4a39e | 1258 | struct type *type = VALUE_TYPE (arr); |
14f9c5c9 AS |
1259 | if (is_thin_pntr (type)) |
1260 | return thin_data_pntr (arr); | |
1261 | else if (is_thick_pntr (type)) | |
d2e4a39e | 1262 | return value_struct_elt (&arr, NULL, "P_ARRAY", NULL, |
4c4b4cd2 | 1263 | "Bad GNAT array descriptor"); |
14f9c5c9 AS |
1264 | else |
1265 | return NULL; | |
1266 | } | |
1267 | ||
1268 | ||
1269 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1270 | position of the field containing the address of the data. */ |
1271 | ||
14f9c5c9 | 1272 | static int |
d2e4a39e | 1273 | fat_pntr_data_bitpos (struct type *type) |
14f9c5c9 AS |
1274 | { |
1275 | return TYPE_FIELD_BITPOS (desc_base_type (type), 0); | |
1276 | } | |
1277 | ||
1278 | /* If TYPE is the type of an array-descriptor (fat pointer), the bit | |
4c4b4cd2 PH |
1279 | size of the field containing the address of the data. */ |
1280 | ||
14f9c5c9 | 1281 | static int |
d2e4a39e | 1282 | fat_pntr_data_bitsize (struct type *type) |
14f9c5c9 AS |
1283 | { |
1284 | type = desc_base_type (type); | |
1285 | ||
1286 | if (TYPE_FIELD_BITSIZE (type, 0) > 0) | |
1287 | return TYPE_FIELD_BITSIZE (type, 0); | |
d2e4a39e | 1288 | else |
14f9c5c9 AS |
1289 | return TARGET_CHAR_BIT * TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)); |
1290 | } | |
1291 | ||
4c4b4cd2 | 1292 | /* If BOUNDS is an array-bounds structure (or pointer to one), return |
14f9c5c9 | 1293 | the Ith lower bound stored in it, if WHICH is 0, and the Ith upper |
4c4b4cd2 PH |
1294 | bound, if WHICH is 1. The first bound is I=1. */ |
1295 | ||
d2e4a39e AS |
1296 | static struct value * |
1297 | desc_one_bound (struct value *bounds, int i, int which) | |
14f9c5c9 | 1298 | { |
d2e4a39e | 1299 | return value_struct_elt (&bounds, NULL, bound_name[2 * i + which - 2], NULL, |
4c4b4cd2 | 1300 | "Bad GNAT array descriptor bounds"); |
14f9c5c9 AS |
1301 | } |
1302 | ||
1303 | /* If BOUNDS is an array-bounds structure type, return the bit position | |
1304 | of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper | |
4c4b4cd2 PH |
1305 | bound, if WHICH is 1. The first bound is I=1. */ |
1306 | ||
14f9c5c9 | 1307 | static int |
d2e4a39e | 1308 | desc_bound_bitpos (struct type *type, int i, int which) |
14f9c5c9 | 1309 | { |
d2e4a39e | 1310 | return TYPE_FIELD_BITPOS (desc_base_type (type), 2 * i + which - 2); |
14f9c5c9 AS |
1311 | } |
1312 | ||
1313 | /* If BOUNDS is an array-bounds structure type, return the bit field size | |
1314 | of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper | |
4c4b4cd2 PH |
1315 | bound, if WHICH is 1. The first bound is I=1. */ |
1316 | ||
76a01679 | 1317 | static int |
d2e4a39e | 1318 | desc_bound_bitsize (struct type *type, int i, int which) |
14f9c5c9 AS |
1319 | { |
1320 | type = desc_base_type (type); | |
1321 | ||
d2e4a39e AS |
1322 | if (TYPE_FIELD_BITSIZE (type, 2 * i + which - 2) > 0) |
1323 | return TYPE_FIELD_BITSIZE (type, 2 * i + which - 2); | |
1324 | else | |
1325 | return 8 * TYPE_LENGTH (TYPE_FIELD_TYPE (type, 2 * i + which - 2)); | |
14f9c5c9 AS |
1326 | } |
1327 | ||
1328 | /* If TYPE is the type of an array-bounds structure, the type of its | |
4c4b4cd2 PH |
1329 | Ith bound (numbering from 1). Otherwise, NULL. */ |
1330 | ||
d2e4a39e AS |
1331 | static struct type * |
1332 | desc_index_type (struct type *type, int i) | |
14f9c5c9 AS |
1333 | { |
1334 | type = desc_base_type (type); | |
1335 | ||
1336 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
d2e4a39e AS |
1337 | return lookup_struct_elt_type (type, bound_name[2 * i - 2], 1); |
1338 | else | |
14f9c5c9 AS |
1339 | return NULL; |
1340 | } | |
1341 | ||
4c4b4cd2 PH |
1342 | /* The number of index positions in the array-bounds type TYPE. |
1343 | Return 0 if TYPE is NULL. */ | |
1344 | ||
14f9c5c9 | 1345 | static int |
d2e4a39e | 1346 | desc_arity (struct type *type) |
14f9c5c9 AS |
1347 | { |
1348 | type = desc_base_type (type); | |
1349 | ||
1350 | if (type != NULL) | |
1351 | return TYPE_NFIELDS (type) / 2; | |
1352 | return 0; | |
1353 | } | |
1354 | ||
4c4b4cd2 PH |
1355 | /* Non-zero iff TYPE is a simple array type (not a pointer to one) or |
1356 | an array descriptor type (representing an unconstrained array | |
1357 | type). */ | |
1358 | ||
76a01679 JB |
1359 | static int |
1360 | ada_is_direct_array_type (struct type *type) | |
4c4b4cd2 PH |
1361 | { |
1362 | if (type == NULL) | |
1363 | return 0; | |
61ee279c | 1364 | type = ada_check_typedef (type); |
4c4b4cd2 | 1365 | return (TYPE_CODE (type) == TYPE_CODE_ARRAY |
76a01679 | 1366 | || ada_is_array_descriptor_type (type)); |
4c4b4cd2 PH |
1367 | } |
1368 | ||
1369 | /* Non-zero iff TYPE is a simple array type or pointer to one. */ | |
14f9c5c9 | 1370 | |
14f9c5c9 | 1371 | int |
4c4b4cd2 | 1372 | ada_is_simple_array_type (struct type *type) |
14f9c5c9 AS |
1373 | { |
1374 | if (type == NULL) | |
1375 | return 0; | |
61ee279c | 1376 | type = ada_check_typedef (type); |
14f9c5c9 | 1377 | return (TYPE_CODE (type) == TYPE_CODE_ARRAY |
4c4b4cd2 PH |
1378 | || (TYPE_CODE (type) == TYPE_CODE_PTR |
1379 | && TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_ARRAY)); | |
14f9c5c9 AS |
1380 | } |
1381 | ||
4c4b4cd2 PH |
1382 | /* Non-zero iff TYPE belongs to a GNAT array descriptor. */ |
1383 | ||
14f9c5c9 | 1384 | int |
4c4b4cd2 | 1385 | ada_is_array_descriptor_type (struct type *type) |
14f9c5c9 | 1386 | { |
d2e4a39e | 1387 | struct type *data_type = desc_data_type (type); |
14f9c5c9 AS |
1388 | |
1389 | if (type == NULL) | |
1390 | return 0; | |
61ee279c | 1391 | type = ada_check_typedef (type); |
d2e4a39e | 1392 | return |
14f9c5c9 AS |
1393 | data_type != NULL |
1394 | && ((TYPE_CODE (data_type) == TYPE_CODE_PTR | |
4c4b4cd2 PH |
1395 | && TYPE_TARGET_TYPE (data_type) != NULL |
1396 | && TYPE_CODE (TYPE_TARGET_TYPE (data_type)) == TYPE_CODE_ARRAY) | |
1265e4aa | 1397 | || TYPE_CODE (data_type) == TYPE_CODE_ARRAY) |
14f9c5c9 AS |
1398 | && desc_arity (desc_bounds_type (type)) > 0; |
1399 | } | |
1400 | ||
1401 | /* Non-zero iff type is a partially mal-formed GNAT array | |
4c4b4cd2 | 1402 | descriptor. FIXME: This is to compensate for some problems with |
14f9c5c9 | 1403 | debugging output from GNAT. Re-examine periodically to see if it |
4c4b4cd2 PH |
1404 | is still needed. */ |
1405 | ||
14f9c5c9 | 1406 | int |
ebf56fd3 | 1407 | ada_is_bogus_array_descriptor (struct type *type) |
14f9c5c9 | 1408 | { |
d2e4a39e | 1409 | return |
14f9c5c9 AS |
1410 | type != NULL |
1411 | && TYPE_CODE (type) == TYPE_CODE_STRUCT | |
1412 | && (lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL | |
4c4b4cd2 PH |
1413 | || lookup_struct_elt_type (type, "P_ARRAY", 1) != NULL) |
1414 | && !ada_is_array_descriptor_type (type); | |
14f9c5c9 AS |
1415 | } |
1416 | ||
1417 | ||
4c4b4cd2 | 1418 | /* If ARR has a record type in the form of a standard GNAT array descriptor, |
14f9c5c9 | 1419 | (fat pointer) returns the type of the array data described---specifically, |
4c4b4cd2 | 1420 | a pointer-to-array type. If BOUNDS is non-zero, the bounds data are filled |
14f9c5c9 | 1421 | in from the descriptor; otherwise, they are left unspecified. If |
4c4b4cd2 PH |
1422 | the ARR denotes a null array descriptor and BOUNDS is non-zero, |
1423 | returns NULL. The result is simply the type of ARR if ARR is not | |
14f9c5c9 | 1424 | a descriptor. */ |
d2e4a39e AS |
1425 | struct type * |
1426 | ada_type_of_array (struct value *arr, int bounds) | |
14f9c5c9 AS |
1427 | { |
1428 | if (ada_is_packed_array_type (VALUE_TYPE (arr))) | |
1429 | return decode_packed_array_type (VALUE_TYPE (arr)); | |
1430 | ||
4c4b4cd2 | 1431 | if (!ada_is_array_descriptor_type (VALUE_TYPE (arr))) |
14f9c5c9 | 1432 | return VALUE_TYPE (arr); |
d2e4a39e AS |
1433 | |
1434 | if (!bounds) | |
1435 | return | |
61ee279c | 1436 | ada_check_typedef (TYPE_TARGET_TYPE (desc_data_type (VALUE_TYPE (arr)))); |
14f9c5c9 AS |
1437 | else |
1438 | { | |
d2e4a39e | 1439 | struct type *elt_type; |
14f9c5c9 | 1440 | int arity; |
d2e4a39e | 1441 | struct value *descriptor; |
14f9c5c9 AS |
1442 | struct objfile *objf = TYPE_OBJFILE (VALUE_TYPE (arr)); |
1443 | ||
1444 | elt_type = ada_array_element_type (VALUE_TYPE (arr), -1); | |
1445 | arity = ada_array_arity (VALUE_TYPE (arr)); | |
1446 | ||
d2e4a39e | 1447 | if (elt_type == NULL || arity == 0) |
61ee279c | 1448 | return ada_check_typedef (VALUE_TYPE (arr)); |
14f9c5c9 AS |
1449 | |
1450 | descriptor = desc_bounds (arr); | |
d2e4a39e | 1451 | if (value_as_long (descriptor) == 0) |
4c4b4cd2 | 1452 | return NULL; |
d2e4a39e | 1453 | while (arity > 0) |
4c4b4cd2 PH |
1454 | { |
1455 | struct type *range_type = alloc_type (objf); | |
1456 | struct type *array_type = alloc_type (objf); | |
1457 | struct value *low = desc_one_bound (descriptor, arity, 0); | |
1458 | struct value *high = desc_one_bound (descriptor, arity, 1); | |
1459 | arity -= 1; | |
1460 | ||
1461 | create_range_type (range_type, VALUE_TYPE (low), | |
1462 | (int) value_as_long (low), | |
1463 | (int) value_as_long (high)); | |
1464 | elt_type = create_array_type (array_type, elt_type, range_type); | |
1465 | } | |
14f9c5c9 AS |
1466 | |
1467 | return lookup_pointer_type (elt_type); | |
1468 | } | |
1469 | } | |
1470 | ||
1471 | /* If ARR does not represent an array, returns ARR unchanged. | |
4c4b4cd2 PH |
1472 | Otherwise, returns either a standard GDB array with bounds set |
1473 | appropriately or, if ARR is a non-null fat pointer, a pointer to a standard | |
1474 | GDB array. Returns NULL if ARR is a null fat pointer. */ | |
1475 | ||
d2e4a39e AS |
1476 | struct value * |
1477 | ada_coerce_to_simple_array_ptr (struct value *arr) | |
14f9c5c9 | 1478 | { |
4c4b4cd2 | 1479 | if (ada_is_array_descriptor_type (VALUE_TYPE (arr))) |
14f9c5c9 | 1480 | { |
d2e4a39e | 1481 | struct type *arrType = ada_type_of_array (arr, 1); |
14f9c5c9 | 1482 | if (arrType == NULL) |
4c4b4cd2 | 1483 | return NULL; |
14f9c5c9 AS |
1484 | return value_cast (arrType, value_copy (desc_data (arr))); |
1485 | } | |
1486 | else if (ada_is_packed_array_type (VALUE_TYPE (arr))) | |
1487 | return decode_packed_array (arr); | |
1488 | else | |
1489 | return arr; | |
1490 | } | |
1491 | ||
1492 | /* If ARR does not represent an array, returns ARR unchanged. | |
1493 | Otherwise, returns a standard GDB array describing ARR (which may | |
4c4b4cd2 PH |
1494 | be ARR itself if it already is in the proper form). */ |
1495 | ||
1496 | static struct value * | |
d2e4a39e | 1497 | ada_coerce_to_simple_array (struct value *arr) |
14f9c5c9 | 1498 | { |
4c4b4cd2 | 1499 | if (ada_is_array_descriptor_type (VALUE_TYPE (arr))) |
14f9c5c9 | 1500 | { |
d2e4a39e | 1501 | struct value *arrVal = ada_coerce_to_simple_array_ptr (arr); |
14f9c5c9 | 1502 | if (arrVal == NULL) |
4c4b4cd2 | 1503 | error ("Bounds unavailable for null array pointer."); |
14f9c5c9 AS |
1504 | return value_ind (arrVal); |
1505 | } | |
1506 | else if (ada_is_packed_array_type (VALUE_TYPE (arr))) | |
1507 | return decode_packed_array (arr); | |
d2e4a39e | 1508 | else |
14f9c5c9 AS |
1509 | return arr; |
1510 | } | |
1511 | ||
1512 | /* If TYPE represents a GNAT array type, return it translated to an | |
1513 | ordinary GDB array type (possibly with BITSIZE fields indicating | |
4c4b4cd2 PH |
1514 | packing). For other types, is the identity. */ |
1515 | ||
d2e4a39e AS |
1516 | struct type * |
1517 | ada_coerce_to_simple_array_type (struct type *type) | |
14f9c5c9 | 1518 | { |
d2e4a39e AS |
1519 | struct value *mark = value_mark (); |
1520 | struct value *dummy = value_from_longest (builtin_type_long, 0); | |
1521 | struct type *result; | |
14f9c5c9 AS |
1522 | VALUE_TYPE (dummy) = type; |
1523 | result = ada_type_of_array (dummy, 0); | |
4c4b4cd2 | 1524 | value_free_to_mark (mark); |
14f9c5c9 AS |
1525 | return result; |
1526 | } | |
1527 | ||
4c4b4cd2 PH |
1528 | /* Non-zero iff TYPE represents a standard GNAT packed-array type. */ |
1529 | ||
14f9c5c9 | 1530 | int |
d2e4a39e | 1531 | ada_is_packed_array_type (struct type *type) |
14f9c5c9 AS |
1532 | { |
1533 | if (type == NULL) | |
1534 | return 0; | |
4c4b4cd2 | 1535 | type = desc_base_type (type); |
61ee279c | 1536 | type = ada_check_typedef (type); |
d2e4a39e | 1537 | return |
14f9c5c9 AS |
1538 | ada_type_name (type) != NULL |
1539 | && strstr (ada_type_name (type), "___XP") != NULL; | |
1540 | } | |
1541 | ||
1542 | /* Given that TYPE is a standard GDB array type with all bounds filled | |
1543 | in, and that the element size of its ultimate scalar constituents | |
1544 | (that is, either its elements, or, if it is an array of arrays, its | |
1545 | elements' elements, etc.) is *ELT_BITS, return an identical type, | |
1546 | but with the bit sizes of its elements (and those of any | |
1547 | constituent arrays) recorded in the BITSIZE components of its | |
4c4b4cd2 PH |
1548 | TYPE_FIELD_BITSIZE values, and with *ELT_BITS set to its total size |
1549 | in bits. */ | |
1550 | ||
d2e4a39e AS |
1551 | static struct type * |
1552 | packed_array_type (struct type *type, long *elt_bits) | |
14f9c5c9 | 1553 | { |
d2e4a39e AS |
1554 | struct type *new_elt_type; |
1555 | struct type *new_type; | |
14f9c5c9 AS |
1556 | LONGEST low_bound, high_bound; |
1557 | ||
61ee279c | 1558 | type = ada_check_typedef (type); |
14f9c5c9 AS |
1559 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY) |
1560 | return type; | |
1561 | ||
1562 | new_type = alloc_type (TYPE_OBJFILE (type)); | |
61ee279c | 1563 | new_elt_type = packed_array_type (ada_check_typedef (TYPE_TARGET_TYPE (type)), |
4c4b4cd2 | 1564 | elt_bits); |
14f9c5c9 AS |
1565 | create_array_type (new_type, new_elt_type, TYPE_FIELD_TYPE (type, 0)); |
1566 | TYPE_FIELD_BITSIZE (new_type, 0) = *elt_bits; | |
1567 | TYPE_NAME (new_type) = ada_type_name (type); | |
1568 | ||
d2e4a39e | 1569 | if (get_discrete_bounds (TYPE_FIELD_TYPE (type, 0), |
4c4b4cd2 | 1570 | &low_bound, &high_bound) < 0) |
14f9c5c9 AS |
1571 | low_bound = high_bound = 0; |
1572 | if (high_bound < low_bound) | |
1573 | *elt_bits = TYPE_LENGTH (new_type) = 0; | |
d2e4a39e | 1574 | else |
14f9c5c9 AS |
1575 | { |
1576 | *elt_bits *= (high_bound - low_bound + 1); | |
d2e4a39e | 1577 | TYPE_LENGTH (new_type) = |
4c4b4cd2 | 1578 | (*elt_bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; |
14f9c5c9 AS |
1579 | } |
1580 | ||
4c4b4cd2 | 1581 | TYPE_FLAGS (new_type) |= TYPE_FLAG_FIXED_INSTANCE; |
14f9c5c9 AS |
1582 | return new_type; |
1583 | } | |
1584 | ||
4c4b4cd2 PH |
1585 | /* The array type encoded by TYPE, where ada_is_packed_array_type (TYPE). */ |
1586 | ||
d2e4a39e AS |
1587 | static struct type * |
1588 | decode_packed_array_type (struct type *type) | |
1589 | { | |
4c4b4cd2 | 1590 | struct symbol *sym; |
d2e4a39e | 1591 | struct block **blocks; |
61ee279c | 1592 | const char *raw_name = ada_type_name (ada_check_typedef (type)); |
d2e4a39e AS |
1593 | char *name = (char *) alloca (strlen (raw_name) + 1); |
1594 | char *tail = strstr (raw_name, "___XP"); | |
1595 | struct type *shadow_type; | |
14f9c5c9 AS |
1596 | long bits; |
1597 | int i, n; | |
1598 | ||
4c4b4cd2 PH |
1599 | type = desc_base_type (type); |
1600 | ||
14f9c5c9 AS |
1601 | memcpy (name, raw_name, tail - raw_name); |
1602 | name[tail - raw_name] = '\000'; | |
1603 | ||
4c4b4cd2 PH |
1604 | sym = standard_lookup (name, get_selected_block (0), VAR_DOMAIN); |
1605 | if (sym == NULL || SYMBOL_TYPE (sym) == NULL) | |
14f9c5c9 | 1606 | { |
4c4b4cd2 | 1607 | lim_warning ("could not find bounds information on packed array", 0); |
14f9c5c9 AS |
1608 | return NULL; |
1609 | } | |
4c4b4cd2 | 1610 | shadow_type = SYMBOL_TYPE (sym); |
14f9c5c9 AS |
1611 | |
1612 | if (TYPE_CODE (shadow_type) != TYPE_CODE_ARRAY) | |
1613 | { | |
4c4b4cd2 PH |
1614 | lim_warning ("could not understand bounds information on packed array", |
1615 | 0); | |
14f9c5c9 AS |
1616 | return NULL; |
1617 | } | |
d2e4a39e | 1618 | |
14f9c5c9 AS |
1619 | if (sscanf (tail + sizeof ("___XP") - 1, "%ld", &bits) != 1) |
1620 | { | |
4c4b4cd2 PH |
1621 | lim_warning |
1622 | ("could not understand bit size information on packed array", 0); | |
14f9c5c9 AS |
1623 | return NULL; |
1624 | } | |
d2e4a39e | 1625 | |
14f9c5c9 AS |
1626 | return packed_array_type (shadow_type, &bits); |
1627 | } | |
1628 | ||
4c4b4cd2 | 1629 | /* Given that ARR is a struct value *indicating a GNAT packed array, |
14f9c5c9 AS |
1630 | returns a simple array that denotes that array. Its type is a |
1631 | standard GDB array type except that the BITSIZEs of the array | |
1632 | target types are set to the number of bits in each element, and the | |
4c4b4cd2 | 1633 | type length is set appropriately. */ |
14f9c5c9 | 1634 | |
d2e4a39e AS |
1635 | static struct value * |
1636 | decode_packed_array (struct value *arr) | |
14f9c5c9 | 1637 | { |
4c4b4cd2 | 1638 | struct type *type; |
14f9c5c9 | 1639 | |
4c4b4cd2 PH |
1640 | arr = ada_coerce_ref (arr); |
1641 | if (TYPE_CODE (VALUE_TYPE (arr)) == TYPE_CODE_PTR) | |
1642 | arr = ada_value_ind (arr); | |
1643 | ||
1644 | type = decode_packed_array_type (VALUE_TYPE (arr)); | |
14f9c5c9 AS |
1645 | if (type == NULL) |
1646 | { | |
1647 | error ("can't unpack array"); | |
1648 | return NULL; | |
1649 | } | |
61ee279c PH |
1650 | |
1651 | if (BITS_BIG_ENDIAN && ada_is_modular_type (VALUE_TYPE (arr))) | |
1652 | { | |
1653 | /* This is a (right-justified) modular type representing a packed | |
1654 | array with no wrapper. In order to interpret the value through | |
1655 | the (left-justified) packed array type we just built, we must | |
1656 | first left-justify it. */ | |
1657 | int bit_size, bit_pos; | |
1658 | ULONGEST mod; | |
1659 | ||
1660 | mod = ada_modulus (VALUE_TYPE (arr)) - 1; | |
1661 | bit_size = 0; | |
1662 | while (mod > 0) | |
1663 | { | |
1664 | bit_size += 1; | |
1665 | mod >>= 1; | |
1666 | } | |
1667 | bit_pos = HOST_CHAR_BIT * TYPE_LENGTH (VALUE_TYPE (arr)) - bit_size; | |
1668 | arr = ada_value_primitive_packed_val (arr, NULL, | |
1669 | bit_pos / HOST_CHAR_BIT, | |
1670 | bit_pos % HOST_CHAR_BIT, | |
1671 | bit_size, | |
1672 | type); | |
1673 | } | |
1674 | ||
4c4b4cd2 | 1675 | return coerce_unspec_val_to_type (arr, type); |
14f9c5c9 AS |
1676 | } |
1677 | ||
1678 | ||
1679 | /* The value of the element of packed array ARR at the ARITY indices | |
4c4b4cd2 | 1680 | given in IND. ARR must be a simple array. */ |
14f9c5c9 | 1681 | |
d2e4a39e AS |
1682 | static struct value * |
1683 | value_subscript_packed (struct value *arr, int arity, struct value **ind) | |
14f9c5c9 AS |
1684 | { |
1685 | int i; | |
1686 | int bits, elt_off, bit_off; | |
1687 | long elt_total_bit_offset; | |
d2e4a39e AS |
1688 | struct type *elt_type; |
1689 | struct value *v; | |
14f9c5c9 AS |
1690 | |
1691 | bits = 0; | |
1692 | elt_total_bit_offset = 0; | |
61ee279c | 1693 | elt_type = ada_check_typedef (VALUE_TYPE (arr)); |
d2e4a39e | 1694 | for (i = 0; i < arity; i += 1) |
14f9c5c9 | 1695 | { |
d2e4a39e | 1696 | if (TYPE_CODE (elt_type) != TYPE_CODE_ARRAY |
4c4b4cd2 PH |
1697 | || TYPE_FIELD_BITSIZE (elt_type, 0) == 0) |
1698 | error | |
1699 | ("attempt to do packed indexing of something other than a packed array"); | |
14f9c5c9 | 1700 | else |
4c4b4cd2 PH |
1701 | { |
1702 | struct type *range_type = TYPE_INDEX_TYPE (elt_type); | |
1703 | LONGEST lowerbound, upperbound; | |
1704 | LONGEST idx; | |
1705 | ||
1706 | if (get_discrete_bounds (range_type, &lowerbound, &upperbound) < 0) | |
1707 | { | |
1708 | lim_warning ("don't know bounds of array", 0); | |
1709 | lowerbound = upperbound = 0; | |
1710 | } | |
1711 | ||
1712 | idx = value_as_long (value_pos_atr (ind[i])); | |
1713 | if (idx < lowerbound || idx > upperbound) | |
1714 | lim_warning ("packed array index %ld out of bounds", (long) idx); | |
1715 | bits = TYPE_FIELD_BITSIZE (elt_type, 0); | |
1716 | elt_total_bit_offset += (idx - lowerbound) * bits; | |
61ee279c | 1717 | elt_type = ada_check_typedef (TYPE_TARGET_TYPE (elt_type)); |
4c4b4cd2 | 1718 | } |
14f9c5c9 AS |
1719 | } |
1720 | elt_off = elt_total_bit_offset / HOST_CHAR_BIT; | |
1721 | bit_off = elt_total_bit_offset % HOST_CHAR_BIT; | |
d2e4a39e AS |
1722 | |
1723 | v = ada_value_primitive_packed_val (arr, NULL, elt_off, bit_off, | |
4c4b4cd2 | 1724 | bits, elt_type); |
14f9c5c9 AS |
1725 | if (VALUE_LVAL (arr) == lval_internalvar) |
1726 | VALUE_LVAL (v) = lval_internalvar_component; | |
1727 | else | |
1728 | VALUE_LVAL (v) = VALUE_LVAL (arr); | |
1729 | return v; | |
1730 | } | |
1731 | ||
4c4b4cd2 | 1732 | /* Non-zero iff TYPE includes negative integer values. */ |
14f9c5c9 AS |
1733 | |
1734 | static int | |
d2e4a39e | 1735 | has_negatives (struct type *type) |
14f9c5c9 | 1736 | { |
d2e4a39e AS |
1737 | switch (TYPE_CODE (type)) |
1738 | { | |
1739 | default: | |
1740 | return 0; | |
1741 | case TYPE_CODE_INT: | |
1742 | return !TYPE_UNSIGNED (type); | |
1743 | case TYPE_CODE_RANGE: | |
1744 | return TYPE_LOW_BOUND (type) < 0; | |
1745 | } | |
14f9c5c9 | 1746 | } |
d2e4a39e | 1747 | |
14f9c5c9 AS |
1748 | |
1749 | /* Create a new value of type TYPE from the contents of OBJ starting | |
1750 | at byte OFFSET, and bit offset BIT_OFFSET within that byte, | |
1751 | proceeding for BIT_SIZE bits. If OBJ is an lval in memory, then | |
4c4b4cd2 PH |
1752 | assigning through the result will set the field fetched from. |
1753 | VALADDR is ignored unless OBJ is NULL, in which case, | |
1754 | VALADDR+OFFSET must address the start of storage containing the | |
1755 | packed value. The value returned in this case is never an lval. | |
1756 | Assumes 0 <= BIT_OFFSET < HOST_CHAR_BIT. */ | |
14f9c5c9 | 1757 | |
d2e4a39e AS |
1758 | struct value * |
1759 | ada_value_primitive_packed_val (struct value *obj, char *valaddr, long offset, | |
4c4b4cd2 PH |
1760 | int bit_offset, int bit_size, |
1761 | struct type *type) | |
14f9c5c9 | 1762 | { |
d2e4a39e | 1763 | struct value *v; |
4c4b4cd2 PH |
1764 | int src, /* Index into the source area */ |
1765 | targ, /* Index into the target area */ | |
1766 | srcBitsLeft, /* Number of source bits left to move */ | |
1767 | nsrc, ntarg, /* Number of source and target bytes */ | |
1768 | unusedLS, /* Number of bits in next significant | |
1769 | byte of source that are unused */ | |
1770 | accumSize; /* Number of meaningful bits in accum */ | |
1771 | unsigned char *bytes; /* First byte containing data to unpack */ | |
d2e4a39e | 1772 | unsigned char *unpacked; |
4c4b4cd2 | 1773 | unsigned long accum; /* Staging area for bits being transferred */ |
14f9c5c9 AS |
1774 | unsigned char sign; |
1775 | int len = (bit_size + bit_offset + HOST_CHAR_BIT - 1) / 8; | |
4c4b4cd2 PH |
1776 | /* Transmit bytes from least to most significant; delta is the direction |
1777 | the indices move. */ | |
14f9c5c9 AS |
1778 | int delta = BITS_BIG_ENDIAN ? -1 : 1; |
1779 | ||
61ee279c | 1780 | type = ada_check_typedef (type); |
14f9c5c9 AS |
1781 | |
1782 | if (obj == NULL) | |
1783 | { | |
1784 | v = allocate_value (type); | |
d2e4a39e | 1785 | bytes = (unsigned char *) (valaddr + offset); |
14f9c5c9 AS |
1786 | } |
1787 | else if (VALUE_LAZY (obj)) | |
1788 | { | |
1789 | v = value_at (type, | |
4c4b4cd2 | 1790 | VALUE_ADDRESS (obj) + VALUE_OFFSET (obj) + offset, NULL); |
d2e4a39e | 1791 | bytes = (unsigned char *) alloca (len); |
14f9c5c9 AS |
1792 | read_memory (VALUE_ADDRESS (v), bytes, len); |
1793 | } | |
d2e4a39e | 1794 | else |
14f9c5c9 AS |
1795 | { |
1796 | v = allocate_value (type); | |
d2e4a39e | 1797 | bytes = (unsigned char *) VALUE_CONTENTS (obj) + offset; |
14f9c5c9 | 1798 | } |
d2e4a39e AS |
1799 | |
1800 | if (obj != NULL) | |
14f9c5c9 AS |
1801 | { |
1802 | VALUE_LVAL (v) = VALUE_LVAL (obj); | |
1803 | if (VALUE_LVAL (obj) == lval_internalvar) | |
4c4b4cd2 | 1804 | VALUE_LVAL (v) = lval_internalvar_component; |
14f9c5c9 AS |
1805 | VALUE_ADDRESS (v) = VALUE_ADDRESS (obj) + VALUE_OFFSET (obj) + offset; |
1806 | VALUE_BITPOS (v) = bit_offset + VALUE_BITPOS (obj); | |
1807 | VALUE_BITSIZE (v) = bit_size; | |
1808 | if (VALUE_BITPOS (v) >= HOST_CHAR_BIT) | |
4c4b4cd2 PH |
1809 | { |
1810 | VALUE_ADDRESS (v) += 1; | |
1811 | VALUE_BITPOS (v) -= HOST_CHAR_BIT; | |
1812 | } | |
14f9c5c9 AS |
1813 | } |
1814 | else | |
1815 | VALUE_BITSIZE (v) = bit_size; | |
d2e4a39e | 1816 | unpacked = (unsigned char *) VALUE_CONTENTS (v); |
14f9c5c9 AS |
1817 | |
1818 | srcBitsLeft = bit_size; | |
1819 | nsrc = len; | |
1820 | ntarg = TYPE_LENGTH (type); | |
1821 | sign = 0; | |
1822 | if (bit_size == 0) | |
1823 | { | |
1824 | memset (unpacked, 0, TYPE_LENGTH (type)); | |
1825 | return v; | |
1826 | } | |
1827 | else if (BITS_BIG_ENDIAN) | |
1828 | { | |
d2e4a39e | 1829 | src = len - 1; |
1265e4aa JB |
1830 | if (has_negatives (type) |
1831 | && ((bytes[0] << bit_offset) & (1 << (HOST_CHAR_BIT - 1)))) | |
4c4b4cd2 | 1832 | sign = ~0; |
d2e4a39e AS |
1833 | |
1834 | unusedLS = | |
4c4b4cd2 PH |
1835 | (HOST_CHAR_BIT - (bit_size + bit_offset) % HOST_CHAR_BIT) |
1836 | % HOST_CHAR_BIT; | |
14f9c5c9 AS |
1837 | |
1838 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
1839 | { |
1840 | case TYPE_CODE_ARRAY: | |
1841 | case TYPE_CODE_UNION: | |
1842 | case TYPE_CODE_STRUCT: | |
1843 | /* Non-scalar values must be aligned at a byte boundary... */ | |
1844 | accumSize = | |
1845 | (HOST_CHAR_BIT - bit_size % HOST_CHAR_BIT) % HOST_CHAR_BIT; | |
1846 | /* ... And are placed at the beginning (most-significant) bytes | |
1847 | of the target. */ | |
1848 | targ = src; | |
1849 | break; | |
1850 | default: | |
1851 | accumSize = 0; | |
1852 | targ = TYPE_LENGTH (type) - 1; | |
1853 | break; | |
1854 | } | |
14f9c5c9 | 1855 | } |
d2e4a39e | 1856 | else |
14f9c5c9 AS |
1857 | { |
1858 | int sign_bit_offset = (bit_size + bit_offset - 1) % 8; | |
1859 | ||
1860 | src = targ = 0; | |
1861 | unusedLS = bit_offset; | |
1862 | accumSize = 0; | |
1863 | ||
d2e4a39e | 1864 | if (has_negatives (type) && (bytes[len - 1] & (1 << sign_bit_offset))) |
4c4b4cd2 | 1865 | sign = ~0; |
14f9c5c9 | 1866 | } |
d2e4a39e | 1867 | |
14f9c5c9 AS |
1868 | accum = 0; |
1869 | while (nsrc > 0) | |
1870 | { | |
1871 | /* Mask for removing bits of the next source byte that are not | |
4c4b4cd2 | 1872 | part of the value. */ |
d2e4a39e | 1873 | unsigned int unusedMSMask = |
4c4b4cd2 PH |
1874 | (1 << (srcBitsLeft >= HOST_CHAR_BIT ? HOST_CHAR_BIT : srcBitsLeft)) - |
1875 | 1; | |
1876 | /* Sign-extend bits for this byte. */ | |
14f9c5c9 | 1877 | unsigned int signMask = sign & ~unusedMSMask; |
d2e4a39e | 1878 | accum |= |
4c4b4cd2 | 1879 | (((bytes[src] >> unusedLS) & unusedMSMask) | signMask) << accumSize; |
14f9c5c9 | 1880 | accumSize += HOST_CHAR_BIT - unusedLS; |
d2e4a39e | 1881 | if (accumSize >= HOST_CHAR_BIT) |
4c4b4cd2 PH |
1882 | { |
1883 | unpacked[targ] = accum & ~(~0L << HOST_CHAR_BIT); | |
1884 | accumSize -= HOST_CHAR_BIT; | |
1885 | accum >>= HOST_CHAR_BIT; | |
1886 | ntarg -= 1; | |
1887 | targ += delta; | |
1888 | } | |
14f9c5c9 AS |
1889 | srcBitsLeft -= HOST_CHAR_BIT - unusedLS; |
1890 | unusedLS = 0; | |
1891 | nsrc -= 1; | |
1892 | src += delta; | |
1893 | } | |
1894 | while (ntarg > 0) | |
1895 | { | |
1896 | accum |= sign << accumSize; | |
1897 | unpacked[targ] = accum & ~(~0L << HOST_CHAR_BIT); | |
1898 | accumSize -= HOST_CHAR_BIT; | |
1899 | accum >>= HOST_CHAR_BIT; | |
1900 | ntarg -= 1; | |
1901 | targ += delta; | |
1902 | } | |
1903 | ||
1904 | return v; | |
1905 | } | |
d2e4a39e | 1906 | |
14f9c5c9 AS |
1907 | /* Move N bits from SOURCE, starting at bit offset SRC_OFFSET to |
1908 | TARGET, starting at bit offset TARG_OFFSET. SOURCE and TARGET must | |
4c4b4cd2 | 1909 | not overlap. */ |
14f9c5c9 | 1910 | static void |
d2e4a39e | 1911 | move_bits (char *target, int targ_offset, char *source, int src_offset, int n) |
14f9c5c9 AS |
1912 | { |
1913 | unsigned int accum, mask; | |
1914 | int accum_bits, chunk_size; | |
1915 | ||
1916 | target += targ_offset / HOST_CHAR_BIT; | |
1917 | targ_offset %= HOST_CHAR_BIT; | |
1918 | source += src_offset / HOST_CHAR_BIT; | |
1919 | src_offset %= HOST_CHAR_BIT; | |
d2e4a39e | 1920 | if (BITS_BIG_ENDIAN) |
14f9c5c9 AS |
1921 | { |
1922 | accum = (unsigned char) *source; | |
1923 | source += 1; | |
1924 | accum_bits = HOST_CHAR_BIT - src_offset; | |
1925 | ||
d2e4a39e | 1926 | while (n > 0) |
4c4b4cd2 PH |
1927 | { |
1928 | int unused_right; | |
1929 | accum = (accum << HOST_CHAR_BIT) + (unsigned char) *source; | |
1930 | accum_bits += HOST_CHAR_BIT; | |
1931 | source += 1; | |
1932 | chunk_size = HOST_CHAR_BIT - targ_offset; | |
1933 | if (chunk_size > n) | |
1934 | chunk_size = n; | |
1935 | unused_right = HOST_CHAR_BIT - (chunk_size + targ_offset); | |
1936 | mask = ((1 << chunk_size) - 1) << unused_right; | |
1937 | *target = | |
1938 | (*target & ~mask) | |
1939 | | ((accum >> (accum_bits - chunk_size - unused_right)) & mask); | |
1940 | n -= chunk_size; | |
1941 | accum_bits -= chunk_size; | |
1942 | target += 1; | |
1943 | targ_offset = 0; | |
1944 | } | |
14f9c5c9 AS |
1945 | } |
1946 | else | |
1947 | { | |
1948 | accum = (unsigned char) *source >> src_offset; | |
1949 | source += 1; | |
1950 | accum_bits = HOST_CHAR_BIT - src_offset; | |
1951 | ||
d2e4a39e | 1952 | while (n > 0) |
4c4b4cd2 PH |
1953 | { |
1954 | accum = accum + ((unsigned char) *source << accum_bits); | |
1955 | accum_bits += HOST_CHAR_BIT; | |
1956 | source += 1; | |
1957 | chunk_size = HOST_CHAR_BIT - targ_offset; | |
1958 | if (chunk_size > n) | |
1959 | chunk_size = n; | |
1960 | mask = ((1 << chunk_size) - 1) << targ_offset; | |
1961 | *target = (*target & ~mask) | ((accum << targ_offset) & mask); | |
1962 | n -= chunk_size; | |
1963 | accum_bits -= chunk_size; | |
1964 | accum >>= chunk_size; | |
1965 | target += 1; | |
1966 | targ_offset = 0; | |
1967 | } | |
14f9c5c9 AS |
1968 | } |
1969 | } | |
1970 | ||
1971 | ||
1972 | /* Store the contents of FROMVAL into the location of TOVAL. | |
1973 | Return a new value with the location of TOVAL and contents of | |
1974 | FROMVAL. Handles assignment into packed fields that have | |
4c4b4cd2 | 1975 | floating-point or non-scalar types. */ |
14f9c5c9 | 1976 | |
d2e4a39e AS |
1977 | static struct value * |
1978 | ada_value_assign (struct value *toval, struct value *fromval) | |
14f9c5c9 | 1979 | { |
d2e4a39e | 1980 | struct type *type = VALUE_TYPE (toval); |
14f9c5c9 AS |
1981 | int bits = VALUE_BITSIZE (toval); |
1982 | ||
1983 | if (!toval->modifiable) | |
1984 | error ("Left operand of assignment is not a modifiable lvalue."); | |
1985 | ||
1986 | COERCE_REF (toval); | |
1987 | ||
d2e4a39e | 1988 | if (VALUE_LVAL (toval) == lval_memory |
14f9c5c9 | 1989 | && bits > 0 |
d2e4a39e | 1990 | && (TYPE_CODE (type) == TYPE_CODE_FLT |
4c4b4cd2 | 1991 | || TYPE_CODE (type) == TYPE_CODE_STRUCT)) |
14f9c5c9 | 1992 | { |
d2e4a39e | 1993 | int len = |
4c4b4cd2 | 1994 | (VALUE_BITPOS (toval) + bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT; |
d2e4a39e AS |
1995 | char *buffer = (char *) alloca (len); |
1996 | struct value *val; | |
14f9c5c9 AS |
1997 | |
1998 | if (TYPE_CODE (type) == TYPE_CODE_FLT) | |
4c4b4cd2 | 1999 | fromval = value_cast (type, fromval); |
14f9c5c9 AS |
2000 | |
2001 | read_memory (VALUE_ADDRESS (toval) + VALUE_OFFSET (toval), buffer, len); | |
2002 | if (BITS_BIG_ENDIAN) | |
4c4b4cd2 PH |
2003 | move_bits (buffer, VALUE_BITPOS (toval), |
2004 | VALUE_CONTENTS (fromval), | |
2005 | TYPE_LENGTH (VALUE_TYPE (fromval)) * TARGET_CHAR_BIT - | |
2006 | bits, bits); | |
14f9c5c9 | 2007 | else |
4c4b4cd2 PH |
2008 | move_bits (buffer, VALUE_BITPOS (toval), VALUE_CONTENTS (fromval), |
2009 | 0, bits); | |
d2e4a39e | 2010 | write_memory (VALUE_ADDRESS (toval) + VALUE_OFFSET (toval), buffer, |
4c4b4cd2 | 2011 | len); |
14f9c5c9 AS |
2012 | |
2013 | val = value_copy (toval); | |
2014 | memcpy (VALUE_CONTENTS_RAW (val), VALUE_CONTENTS (fromval), | |
4c4b4cd2 | 2015 | TYPE_LENGTH (type)); |
14f9c5c9 | 2016 | VALUE_TYPE (val) = type; |
d2e4a39e | 2017 | |
14f9c5c9 AS |
2018 | return val; |
2019 | } | |
2020 | ||
2021 | return value_assign (toval, fromval); | |
2022 | } | |
2023 | ||
2024 | ||
4c4b4cd2 PH |
2025 | /* The value of the element of array ARR at the ARITY indices given in IND. |
2026 | ARR may be either a simple array, GNAT array descriptor, or pointer | |
14f9c5c9 AS |
2027 | thereto. */ |
2028 | ||
d2e4a39e AS |
2029 | struct value * |
2030 | ada_value_subscript (struct value *arr, int arity, struct value **ind) | |
14f9c5c9 AS |
2031 | { |
2032 | int k; | |
d2e4a39e AS |
2033 | struct value *elt; |
2034 | struct type *elt_type; | |
14f9c5c9 AS |
2035 | |
2036 | elt = ada_coerce_to_simple_array (arr); | |
2037 | ||
61ee279c | 2038 | elt_type = ada_check_typedef (VALUE_TYPE (elt)); |
d2e4a39e | 2039 | if (TYPE_CODE (elt_type) == TYPE_CODE_ARRAY |
14f9c5c9 AS |
2040 | && TYPE_FIELD_BITSIZE (elt_type, 0) > 0) |
2041 | return value_subscript_packed (elt, arity, ind); | |
2042 | ||
2043 | for (k = 0; k < arity; k += 1) | |
2044 | { | |
2045 | if (TYPE_CODE (elt_type) != TYPE_CODE_ARRAY) | |
4c4b4cd2 | 2046 | error ("too many subscripts (%d expected)", k); |
14f9c5c9 AS |
2047 | elt = value_subscript (elt, value_pos_atr (ind[k])); |
2048 | } | |
2049 | return elt; | |
2050 | } | |
2051 | ||
2052 | /* Assuming ARR is a pointer to a standard GDB array of type TYPE, the | |
2053 | value of the element of *ARR at the ARITY indices given in | |
4c4b4cd2 | 2054 | IND. Does not read the entire array into memory. */ |
14f9c5c9 | 2055 | |
d2e4a39e AS |
2056 | struct value * |
2057 | ada_value_ptr_subscript (struct value *arr, struct type *type, int arity, | |
4c4b4cd2 | 2058 | struct value **ind) |
14f9c5c9 AS |
2059 | { |
2060 | int k; | |
2061 | ||
2062 | for (k = 0; k < arity; k += 1) | |
2063 | { | |
2064 | LONGEST lwb, upb; | |
d2e4a39e | 2065 | struct value *idx; |
14f9c5c9 AS |
2066 | |
2067 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY) | |
4c4b4cd2 | 2068 | error ("too many subscripts (%d expected)", k); |
d2e4a39e | 2069 | arr = value_cast (lookup_pointer_type (TYPE_TARGET_TYPE (type)), |
4c4b4cd2 | 2070 | value_copy (arr)); |
14f9c5c9 | 2071 | get_discrete_bounds (TYPE_INDEX_TYPE (type), &lwb, &upb); |
4c4b4cd2 PH |
2072 | idx = value_pos_atr (ind[k]); |
2073 | if (lwb != 0) | |
2074 | idx = value_sub (idx, value_from_longest (builtin_type_int, lwb)); | |
14f9c5c9 AS |
2075 | arr = value_add (arr, idx); |
2076 | type = TYPE_TARGET_TYPE (type); | |
2077 | } | |
2078 | ||
2079 | return value_ind (arr); | |
2080 | } | |
2081 | ||
0b5d8877 PH |
2082 | /* Given that ARRAY_PTR is a pointer or reference to an array of type TYPE (the |
2083 | actual type of ARRAY_PTR is ignored), returns a reference to | |
2084 | the Ada slice of HIGH-LOW+1 elements starting at index LOW. The lower | |
2085 | bound of this array is LOW, as per Ada rules. */ | |
2086 | static struct value * | |
6c038f32 | 2087 | ada_value_slice_ptr (struct value *array_ptr, struct type *type, |
0b5d8877 PH |
2088 | int low, int high) |
2089 | { | |
6c038f32 | 2090 | CORE_ADDR base = value_as_address (array_ptr) |
0b5d8877 PH |
2091 | + ((low - TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type))) |
2092 | * TYPE_LENGTH (TYPE_TARGET_TYPE (type))); | |
6c038f32 PH |
2093 | struct type *index_type = |
2094 | create_range_type (NULL, TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (type)), | |
0b5d8877 | 2095 | low, high); |
6c038f32 | 2096 | struct type *slice_type = |
0b5d8877 PH |
2097 | create_array_type (NULL, TYPE_TARGET_TYPE (type), index_type); |
2098 | return value_from_pointer (lookup_reference_type (slice_type), base); | |
2099 | } | |
2100 | ||
2101 | ||
2102 | static struct value * | |
2103 | ada_value_slice (struct value *array, int low, int high) | |
2104 | { | |
2105 | struct type *type = VALUE_TYPE (array); | |
6c038f32 | 2106 | struct type *index_type = |
0b5d8877 | 2107 | create_range_type (NULL, TYPE_INDEX_TYPE (type), low, high); |
6c038f32 | 2108 | struct type *slice_type = |
0b5d8877 | 2109 | create_array_type (NULL, TYPE_TARGET_TYPE (type), index_type); |
6c038f32 | 2110 | return value_cast (slice_type, value_slice (array, low, high - low + 1)); |
0b5d8877 PH |
2111 | } |
2112 | ||
14f9c5c9 AS |
2113 | /* If type is a record type in the form of a standard GNAT array |
2114 | descriptor, returns the number of dimensions for type. If arr is a | |
2115 | simple array, returns the number of "array of"s that prefix its | |
4c4b4cd2 | 2116 | type designation. Otherwise, returns 0. */ |
14f9c5c9 AS |
2117 | |
2118 | int | |
d2e4a39e | 2119 | ada_array_arity (struct type *type) |
14f9c5c9 AS |
2120 | { |
2121 | int arity; | |
2122 | ||
2123 | if (type == NULL) | |
2124 | return 0; | |
2125 | ||
2126 | type = desc_base_type (type); | |
2127 | ||
2128 | arity = 0; | |
d2e4a39e | 2129 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
14f9c5c9 | 2130 | return desc_arity (desc_bounds_type (type)); |
d2e4a39e AS |
2131 | else |
2132 | while (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
14f9c5c9 | 2133 | { |
4c4b4cd2 | 2134 | arity += 1; |
61ee279c | 2135 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
14f9c5c9 | 2136 | } |
d2e4a39e | 2137 | |
14f9c5c9 AS |
2138 | return arity; |
2139 | } | |
2140 | ||
2141 | /* If TYPE is a record type in the form of a standard GNAT array | |
2142 | descriptor or a simple array type, returns the element type for | |
2143 | TYPE after indexing by NINDICES indices, or by all indices if | |
4c4b4cd2 | 2144 | NINDICES is -1. Otherwise, returns NULL. */ |
14f9c5c9 | 2145 | |
d2e4a39e AS |
2146 | struct type * |
2147 | ada_array_element_type (struct type *type, int nindices) | |
14f9c5c9 AS |
2148 | { |
2149 | type = desc_base_type (type); | |
2150 | ||
d2e4a39e | 2151 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
14f9c5c9 AS |
2152 | { |
2153 | int k; | |
d2e4a39e | 2154 | struct type *p_array_type; |
14f9c5c9 AS |
2155 | |
2156 | p_array_type = desc_data_type (type); | |
2157 | ||
2158 | k = ada_array_arity (type); | |
2159 | if (k == 0) | |
4c4b4cd2 | 2160 | return NULL; |
d2e4a39e | 2161 | |
4c4b4cd2 | 2162 | /* Initially p_array_type = elt_type(*)[]...(k times)...[]. */ |
14f9c5c9 | 2163 | if (nindices >= 0 && k > nindices) |
4c4b4cd2 | 2164 | k = nindices; |
14f9c5c9 | 2165 | p_array_type = TYPE_TARGET_TYPE (p_array_type); |
d2e4a39e | 2166 | while (k > 0 && p_array_type != NULL) |
4c4b4cd2 | 2167 | { |
61ee279c | 2168 | p_array_type = ada_check_typedef (TYPE_TARGET_TYPE (p_array_type)); |
4c4b4cd2 PH |
2169 | k -= 1; |
2170 | } | |
14f9c5c9 AS |
2171 | return p_array_type; |
2172 | } | |
2173 | else if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
2174 | { | |
2175 | while (nindices != 0 && TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
4c4b4cd2 PH |
2176 | { |
2177 | type = TYPE_TARGET_TYPE (type); | |
2178 | nindices -= 1; | |
2179 | } | |
14f9c5c9 AS |
2180 | return type; |
2181 | } | |
2182 | ||
2183 | return NULL; | |
2184 | } | |
2185 | ||
4c4b4cd2 PH |
2186 | /* The type of nth index in arrays of given type (n numbering from 1). |
2187 | Does not examine memory. */ | |
14f9c5c9 | 2188 | |
d2e4a39e AS |
2189 | struct type * |
2190 | ada_index_type (struct type *type, int n) | |
14f9c5c9 | 2191 | { |
4c4b4cd2 PH |
2192 | struct type *result_type; |
2193 | ||
14f9c5c9 AS |
2194 | type = desc_base_type (type); |
2195 | ||
2196 | if (n > ada_array_arity (type)) | |
2197 | return NULL; | |
2198 | ||
4c4b4cd2 | 2199 | if (ada_is_simple_array_type (type)) |
14f9c5c9 AS |
2200 | { |
2201 | int i; | |
2202 | ||
2203 | for (i = 1; i < n; i += 1) | |
4c4b4cd2 PH |
2204 | type = TYPE_TARGET_TYPE (type); |
2205 | result_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0)); | |
2206 | /* FIXME: The stabs type r(0,0);bound;bound in an array type | |
2207 | has a target type of TYPE_CODE_UNDEF. We compensate here, but | |
76a01679 JB |
2208 | perhaps stabsread.c would make more sense. */ |
2209 | if (result_type == NULL || TYPE_CODE (result_type) == TYPE_CODE_UNDEF) | |
2210 | result_type = builtin_type_int; | |
14f9c5c9 | 2211 | |
4c4b4cd2 | 2212 | return result_type; |
14f9c5c9 | 2213 | } |
d2e4a39e | 2214 | else |
14f9c5c9 AS |
2215 | return desc_index_type (desc_bounds_type (type), n); |
2216 | } | |
2217 | ||
2218 | /* Given that arr is an array type, returns the lower bound of the | |
2219 | Nth index (numbering from 1) if WHICH is 0, and the upper bound if | |
4c4b4cd2 PH |
2220 | WHICH is 1. This returns bounds 0 .. -1 if ARR_TYPE is an |
2221 | array-descriptor type. If TYPEP is non-null, *TYPEP is set to the | |
2222 | bounds type. It works for other arrays with bounds supplied by | |
2223 | run-time quantities other than discriminants. */ | |
14f9c5c9 AS |
2224 | |
2225 | LONGEST | |
d2e4a39e | 2226 | ada_array_bound_from_type (struct type * arr_type, int n, int which, |
4c4b4cd2 | 2227 | struct type ** typep) |
14f9c5c9 | 2228 | { |
d2e4a39e AS |
2229 | struct type *type; |
2230 | struct type *index_type_desc; | |
14f9c5c9 AS |
2231 | |
2232 | if (ada_is_packed_array_type (arr_type)) | |
2233 | arr_type = decode_packed_array_type (arr_type); | |
2234 | ||
4c4b4cd2 | 2235 | if (arr_type == NULL || !ada_is_simple_array_type (arr_type)) |
14f9c5c9 AS |
2236 | { |
2237 | if (typep != NULL) | |
4c4b4cd2 | 2238 | *typep = builtin_type_int; |
d2e4a39e | 2239 | return (LONGEST) - which; |
14f9c5c9 AS |
2240 | } |
2241 | ||
2242 | if (TYPE_CODE (arr_type) == TYPE_CODE_PTR) | |
2243 | type = TYPE_TARGET_TYPE (arr_type); | |
2244 | else | |
2245 | type = arr_type; | |
2246 | ||
2247 | index_type_desc = ada_find_parallel_type (type, "___XA"); | |
d2e4a39e | 2248 | if (index_type_desc == NULL) |
14f9c5c9 | 2249 | { |
d2e4a39e AS |
2250 | struct type *range_type; |
2251 | struct type *index_type; | |
14f9c5c9 | 2252 | |
d2e4a39e | 2253 | while (n > 1) |
4c4b4cd2 PH |
2254 | { |
2255 | type = TYPE_TARGET_TYPE (type); | |
2256 | n -= 1; | |
2257 | } | |
14f9c5c9 AS |
2258 | |
2259 | range_type = TYPE_INDEX_TYPE (type); | |
2260 | index_type = TYPE_TARGET_TYPE (range_type); | |
2261 | if (TYPE_CODE (index_type) == TYPE_CODE_UNDEF) | |
4c4b4cd2 | 2262 | index_type = builtin_type_long; |
14f9c5c9 | 2263 | if (typep != NULL) |
4c4b4cd2 | 2264 | *typep = index_type; |
d2e4a39e | 2265 | return |
4c4b4cd2 PH |
2266 | (LONGEST) (which == 0 |
2267 | ? TYPE_LOW_BOUND (range_type) | |
2268 | : TYPE_HIGH_BOUND (range_type)); | |
14f9c5c9 | 2269 | } |
d2e4a39e | 2270 | else |
14f9c5c9 | 2271 | { |
d2e4a39e | 2272 | struct type *index_type = |
4c4b4cd2 PH |
2273 | to_fixed_range_type (TYPE_FIELD_NAME (index_type_desc, n - 1), |
2274 | NULL, TYPE_OBJFILE (arr_type)); | |
14f9c5c9 | 2275 | if (typep != NULL) |
4c4b4cd2 | 2276 | *typep = TYPE_TARGET_TYPE (index_type); |
d2e4a39e | 2277 | return |
4c4b4cd2 PH |
2278 | (LONGEST) (which == 0 |
2279 | ? TYPE_LOW_BOUND (index_type) | |
2280 | : TYPE_HIGH_BOUND (index_type)); | |
14f9c5c9 AS |
2281 | } |
2282 | } | |
2283 | ||
2284 | /* Given that arr is an array value, returns the lower bound of the | |
2285 | nth index (numbering from 1) if which is 0, and the upper bound if | |
4c4b4cd2 PH |
2286 | which is 1. This routine will also work for arrays with bounds |
2287 | supplied by run-time quantities other than discriminants. */ | |
14f9c5c9 | 2288 | |
d2e4a39e | 2289 | struct value * |
4dc81987 | 2290 | ada_array_bound (struct value *arr, int n, int which) |
14f9c5c9 | 2291 | { |
d2e4a39e | 2292 | struct type *arr_type = VALUE_TYPE (arr); |
14f9c5c9 AS |
2293 | |
2294 | if (ada_is_packed_array_type (arr_type)) | |
2295 | return ada_array_bound (decode_packed_array (arr), n, which); | |
4c4b4cd2 | 2296 | else if (ada_is_simple_array_type (arr_type)) |
14f9c5c9 | 2297 | { |
d2e4a39e | 2298 | struct type *type; |
14f9c5c9 AS |
2299 | LONGEST v = ada_array_bound_from_type (arr_type, n, which, &type); |
2300 | return value_from_longest (type, v); | |
2301 | } | |
2302 | else | |
2303 | return desc_one_bound (desc_bounds (arr), n, which); | |
2304 | } | |
2305 | ||
2306 | /* Given that arr is an array value, returns the length of the | |
2307 | nth index. This routine will also work for arrays with bounds | |
4c4b4cd2 PH |
2308 | supplied by run-time quantities other than discriminants. |
2309 | Does not work for arrays indexed by enumeration types with representation | |
2310 | clauses at the moment. */ | |
14f9c5c9 | 2311 | |
d2e4a39e AS |
2312 | struct value * |
2313 | ada_array_length (struct value *arr, int n) | |
14f9c5c9 | 2314 | { |
61ee279c | 2315 | struct type *arr_type = ada_check_typedef (VALUE_TYPE (arr)); |
14f9c5c9 AS |
2316 | |
2317 | if (ada_is_packed_array_type (arr_type)) | |
2318 | return ada_array_length (decode_packed_array (arr), n); | |
2319 | ||
4c4b4cd2 | 2320 | if (ada_is_simple_array_type (arr_type)) |
14f9c5c9 | 2321 | { |
d2e4a39e | 2322 | struct type *type; |
14f9c5c9 | 2323 | LONGEST v = |
4c4b4cd2 PH |
2324 | ada_array_bound_from_type (arr_type, n, 1, &type) - |
2325 | ada_array_bound_from_type (arr_type, n, 0, NULL) + 1; | |
14f9c5c9 AS |
2326 | return value_from_longest (type, v); |
2327 | } | |
2328 | else | |
d2e4a39e | 2329 | return |
72d5681a | 2330 | value_from_longest (builtin_type_int, |
4c4b4cd2 PH |
2331 | value_as_long (desc_one_bound (desc_bounds (arr), |
2332 | n, 1)) | |
2333 | - value_as_long (desc_one_bound (desc_bounds (arr), | |
2334 | n, 0)) + 1); | |
2335 | } | |
2336 | ||
2337 | /* An empty array whose type is that of ARR_TYPE (an array type), | |
2338 | with bounds LOW to LOW-1. */ | |
2339 | ||
2340 | static struct value * | |
2341 | empty_array (struct type *arr_type, int low) | |
2342 | { | |
6c038f32 | 2343 | struct type *index_type = |
0b5d8877 PH |
2344 | create_range_type (NULL, TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (arr_type)), |
2345 | low, low - 1); | |
2346 | struct type *elt_type = ada_array_element_type (arr_type, 1); | |
2347 | return allocate_value (create_array_type (NULL, elt_type, index_type)); | |
14f9c5c9 | 2348 | } |
14f9c5c9 | 2349 | \f |
d2e4a39e | 2350 | |
4c4b4cd2 | 2351 | /* Name resolution */ |
14f9c5c9 | 2352 | |
4c4b4cd2 PH |
2353 | /* The "decoded" name for the user-definable Ada operator corresponding |
2354 | to OP. */ | |
14f9c5c9 | 2355 | |
d2e4a39e | 2356 | static const char * |
4c4b4cd2 | 2357 | ada_decoded_op_name (enum exp_opcode op) |
14f9c5c9 AS |
2358 | { |
2359 | int i; | |
2360 | ||
4c4b4cd2 | 2361 | for (i = 0; ada_opname_table[i].encoded != NULL; i += 1) |
14f9c5c9 AS |
2362 | { |
2363 | if (ada_opname_table[i].op == op) | |
4c4b4cd2 | 2364 | return ada_opname_table[i].decoded; |
14f9c5c9 AS |
2365 | } |
2366 | error ("Could not find operator name for opcode"); | |
2367 | } | |
2368 | ||
2369 | ||
4c4b4cd2 PH |
2370 | /* Same as evaluate_type (*EXP), but resolves ambiguous symbol |
2371 | references (marked by OP_VAR_VALUE nodes in which the symbol has an | |
2372 | undefined namespace) and converts operators that are | |
2373 | user-defined into appropriate function calls. If CONTEXT_TYPE is | |
14f9c5c9 AS |
2374 | non-null, it provides a preferred result type [at the moment, only |
2375 | type void has any effect---causing procedures to be preferred over | |
2376 | functions in calls]. A null CONTEXT_TYPE indicates that a non-void | |
4c4b4cd2 | 2377 | return type is preferred. May change (expand) *EXP. */ |
14f9c5c9 | 2378 | |
4c4b4cd2 PH |
2379 | static void |
2380 | resolve (struct expression **expp, int void_context_p) | |
14f9c5c9 AS |
2381 | { |
2382 | int pc; | |
2383 | pc = 0; | |
4c4b4cd2 | 2384 | resolve_subexp (expp, &pc, 1, void_context_p ? builtin_type_void : NULL); |
14f9c5c9 AS |
2385 | } |
2386 | ||
4c4b4cd2 PH |
2387 | /* Resolve the operator of the subexpression beginning at |
2388 | position *POS of *EXPP. "Resolving" consists of replacing | |
2389 | the symbols that have undefined namespaces in OP_VAR_VALUE nodes | |
2390 | with their resolutions, replacing built-in operators with | |
2391 | function calls to user-defined operators, where appropriate, and, | |
2392 | when DEPROCEDURE_P is non-zero, converting function-valued variables | |
2393 | into parameterless calls. May expand *EXPP. The CONTEXT_TYPE functions | |
2394 | are as in ada_resolve, above. */ | |
14f9c5c9 | 2395 | |
d2e4a39e | 2396 | static struct value * |
4c4b4cd2 | 2397 | resolve_subexp (struct expression **expp, int *pos, int deprocedure_p, |
76a01679 | 2398 | struct type *context_type) |
14f9c5c9 AS |
2399 | { |
2400 | int pc = *pos; | |
2401 | int i; | |
4c4b4cd2 | 2402 | struct expression *exp; /* Convenience: == *expp. */ |
14f9c5c9 | 2403 | enum exp_opcode op = (*expp)->elts[pc].opcode; |
4c4b4cd2 PH |
2404 | struct value **argvec; /* Vector of operand types (alloca'ed). */ |
2405 | int nargs; /* Number of operands. */ | |
14f9c5c9 AS |
2406 | |
2407 | argvec = NULL; | |
2408 | nargs = 0; | |
2409 | exp = *expp; | |
2410 | ||
4c4b4cd2 | 2411 | /* Pass one: resolve operands, saving their types and updating *pos. */ |
14f9c5c9 AS |
2412 | switch (op) |
2413 | { | |
4c4b4cd2 PH |
2414 | case OP_FUNCALL: |
2415 | if (exp->elts[pc + 3].opcode == OP_VAR_VALUE | |
76a01679 JB |
2416 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
2417 | *pos += 7; | |
4c4b4cd2 PH |
2418 | else |
2419 | { | |
2420 | *pos += 3; | |
2421 | resolve_subexp (expp, pos, 0, NULL); | |
2422 | } | |
2423 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
14f9c5c9 AS |
2424 | break; |
2425 | ||
4c4b4cd2 PH |
2426 | case UNOP_QUAL: |
2427 | *pos += 3; | |
2428 | resolve_subexp (expp, pos, 1, exp->elts[pc + 1].type); | |
14f9c5c9 AS |
2429 | break; |
2430 | ||
14f9c5c9 | 2431 | case UNOP_ADDR: |
4c4b4cd2 PH |
2432 | *pos += 1; |
2433 | resolve_subexp (expp, pos, 0, NULL); | |
2434 | break; | |
2435 | ||
2436 | case OP_ATR_MODULUS: | |
2437 | *pos += 4; | |
2438 | break; | |
2439 | ||
2440 | case OP_ATR_SIZE: | |
2441 | case OP_ATR_TAG: | |
2442 | *pos += 1; | |
14f9c5c9 | 2443 | nargs = 1; |
4c4b4cd2 PH |
2444 | break; |
2445 | ||
2446 | case OP_ATR_FIRST: | |
2447 | case OP_ATR_LAST: | |
2448 | case OP_ATR_LENGTH: | |
2449 | case OP_ATR_POS: | |
2450 | case OP_ATR_VAL: | |
14f9c5c9 | 2451 | *pos += 1; |
4c4b4cd2 PH |
2452 | nargs = 2; |
2453 | break; | |
2454 | ||
2455 | case OP_ATR_MIN: | |
2456 | case OP_ATR_MAX: | |
2457 | *pos += 1; | |
2458 | nargs = 3; | |
14f9c5c9 AS |
2459 | break; |
2460 | ||
2461 | case BINOP_ASSIGN: | |
2462 | { | |
4c4b4cd2 PH |
2463 | struct value *arg1; |
2464 | ||
2465 | *pos += 1; | |
2466 | arg1 = resolve_subexp (expp, pos, 0, NULL); | |
2467 | if (arg1 == NULL) | |
2468 | resolve_subexp (expp, pos, 1, NULL); | |
2469 | else | |
2470 | resolve_subexp (expp, pos, 1, VALUE_TYPE (arg1)); | |
2471 | break; | |
14f9c5c9 AS |
2472 | } |
2473 | ||
4c4b4cd2 PH |
2474 | case UNOP_CAST: |
2475 | case UNOP_IN_RANGE: | |
2476 | *pos += 3; | |
2477 | nargs = 1; | |
2478 | break; | |
14f9c5c9 | 2479 | |
4c4b4cd2 PH |
2480 | case BINOP_ADD: |
2481 | case BINOP_SUB: | |
2482 | case BINOP_MUL: | |
2483 | case BINOP_DIV: | |
2484 | case BINOP_REM: | |
2485 | case BINOP_MOD: | |
2486 | case BINOP_EXP: | |
2487 | case BINOP_CONCAT: | |
2488 | case BINOP_LOGICAL_AND: | |
2489 | case BINOP_LOGICAL_OR: | |
2490 | case BINOP_BITWISE_AND: | |
2491 | case BINOP_BITWISE_IOR: | |
2492 | case BINOP_BITWISE_XOR: | |
14f9c5c9 | 2493 | |
4c4b4cd2 PH |
2494 | case BINOP_EQUAL: |
2495 | case BINOP_NOTEQUAL: | |
2496 | case BINOP_LESS: | |
2497 | case BINOP_GTR: | |
2498 | case BINOP_LEQ: | |
2499 | case BINOP_GEQ: | |
14f9c5c9 | 2500 | |
4c4b4cd2 PH |
2501 | case BINOP_REPEAT: |
2502 | case BINOP_SUBSCRIPT: | |
2503 | case BINOP_COMMA: | |
2504 | *pos += 1; | |
2505 | nargs = 2; | |
2506 | break; | |
14f9c5c9 | 2507 | |
4c4b4cd2 PH |
2508 | case UNOP_NEG: |
2509 | case UNOP_PLUS: | |
2510 | case UNOP_LOGICAL_NOT: | |
2511 | case UNOP_ABS: | |
2512 | case UNOP_IND: | |
2513 | *pos += 1; | |
2514 | nargs = 1; | |
2515 | break; | |
14f9c5c9 | 2516 | |
4c4b4cd2 PH |
2517 | case OP_LONG: |
2518 | case OP_DOUBLE: | |
2519 | case OP_VAR_VALUE: | |
2520 | *pos += 4; | |
2521 | break; | |
14f9c5c9 | 2522 | |
4c4b4cd2 PH |
2523 | case OP_TYPE: |
2524 | case OP_BOOL: | |
2525 | case OP_LAST: | |
2526 | case OP_REGISTER: | |
2527 | case OP_INTERNALVAR: | |
2528 | *pos += 3; | |
2529 | break; | |
14f9c5c9 | 2530 | |
4c4b4cd2 PH |
2531 | case UNOP_MEMVAL: |
2532 | *pos += 3; | |
2533 | nargs = 1; | |
2534 | break; | |
2535 | ||
2536 | case STRUCTOP_STRUCT: | |
2537 | *pos += 4 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1); | |
2538 | nargs = 1; | |
2539 | break; | |
2540 | ||
2541 | case OP_STRING: | |
19c1ef65 PH |
2542 | (*pos) += 3 |
2543 | + BYTES_TO_EXP_ELEM (longest_to_int (exp->elts[pc + 1].longconst) | |
2544 | + 1); | |
4c4b4cd2 PH |
2545 | break; |
2546 | ||
2547 | case TERNOP_SLICE: | |
2548 | case TERNOP_IN_RANGE: | |
2549 | *pos += 1; | |
2550 | nargs = 3; | |
2551 | break; | |
2552 | ||
2553 | case BINOP_IN_BOUNDS: | |
2554 | *pos += 3; | |
2555 | nargs = 2; | |
14f9c5c9 | 2556 | break; |
4c4b4cd2 PH |
2557 | |
2558 | default: | |
2559 | error ("Unexpected operator during name resolution"); | |
14f9c5c9 AS |
2560 | } |
2561 | ||
76a01679 | 2562 | argvec = (struct value * *) alloca (sizeof (struct value *) * (nargs + 1)); |
4c4b4cd2 PH |
2563 | for (i = 0; i < nargs; i += 1) |
2564 | argvec[i] = resolve_subexp (expp, pos, 1, NULL); | |
2565 | argvec[i] = NULL; | |
2566 | exp = *expp; | |
2567 | ||
2568 | /* Pass two: perform any resolution on principal operator. */ | |
14f9c5c9 AS |
2569 | switch (op) |
2570 | { | |
2571 | default: | |
2572 | break; | |
2573 | ||
14f9c5c9 | 2574 | case OP_VAR_VALUE: |
4c4b4cd2 | 2575 | if (SYMBOL_DOMAIN (exp->elts[pc + 2].symbol) == UNDEF_DOMAIN) |
76a01679 JB |
2576 | { |
2577 | struct ada_symbol_info *candidates; | |
2578 | int n_candidates; | |
2579 | ||
2580 | n_candidates = | |
2581 | ada_lookup_symbol_list (SYMBOL_LINKAGE_NAME | |
2582 | (exp->elts[pc + 2].symbol), | |
2583 | exp->elts[pc + 1].block, VAR_DOMAIN, | |
2584 | &candidates); | |
2585 | ||
2586 | if (n_candidates > 1) | |
2587 | { | |
2588 | /* Types tend to get re-introduced locally, so if there | |
2589 | are any local symbols that are not types, first filter | |
2590 | out all types. */ | |
2591 | int j; | |
2592 | for (j = 0; j < n_candidates; j += 1) | |
2593 | switch (SYMBOL_CLASS (candidates[j].sym)) | |
2594 | { | |
2595 | case LOC_REGISTER: | |
2596 | case LOC_ARG: | |
2597 | case LOC_REF_ARG: | |
2598 | case LOC_REGPARM: | |
2599 | case LOC_REGPARM_ADDR: | |
2600 | case LOC_LOCAL: | |
2601 | case LOC_LOCAL_ARG: | |
2602 | case LOC_BASEREG: | |
2603 | case LOC_BASEREG_ARG: | |
2604 | case LOC_COMPUTED: | |
2605 | case LOC_COMPUTED_ARG: | |
2606 | goto FoundNonType; | |
2607 | default: | |
2608 | break; | |
2609 | } | |
2610 | FoundNonType: | |
2611 | if (j < n_candidates) | |
2612 | { | |
2613 | j = 0; | |
2614 | while (j < n_candidates) | |
2615 | { | |
2616 | if (SYMBOL_CLASS (candidates[j].sym) == LOC_TYPEDEF) | |
2617 | { | |
2618 | candidates[j] = candidates[n_candidates - 1]; | |
2619 | n_candidates -= 1; | |
2620 | } | |
2621 | else | |
2622 | j += 1; | |
2623 | } | |
2624 | } | |
2625 | } | |
2626 | ||
2627 | if (n_candidates == 0) | |
2628 | error ("No definition found for %s", | |
2629 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); | |
2630 | else if (n_candidates == 1) | |
2631 | i = 0; | |
2632 | else if (deprocedure_p | |
2633 | && !is_nonfunction (candidates, n_candidates)) | |
2634 | { | |
06d5cf63 JB |
2635 | i = ada_resolve_function |
2636 | (candidates, n_candidates, NULL, 0, | |
2637 | SYMBOL_LINKAGE_NAME (exp->elts[pc + 2].symbol), | |
2638 | context_type); | |
76a01679 JB |
2639 | if (i < 0) |
2640 | error ("Could not find a match for %s", | |
2641 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); | |
2642 | } | |
2643 | else | |
2644 | { | |
2645 | printf_filtered ("Multiple matches for %s\n", | |
2646 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); | |
2647 | user_select_syms (candidates, n_candidates, 1); | |
2648 | i = 0; | |
2649 | } | |
2650 | ||
2651 | exp->elts[pc + 1].block = candidates[i].block; | |
2652 | exp->elts[pc + 2].symbol = candidates[i].sym; | |
1265e4aa JB |
2653 | if (innermost_block == NULL |
2654 | || contained_in (candidates[i].block, innermost_block)) | |
76a01679 JB |
2655 | innermost_block = candidates[i].block; |
2656 | } | |
2657 | ||
2658 | if (deprocedure_p | |
2659 | && (TYPE_CODE (SYMBOL_TYPE (exp->elts[pc + 2].symbol)) | |
2660 | == TYPE_CODE_FUNC)) | |
2661 | { | |
2662 | replace_operator_with_call (expp, pc, 0, 0, | |
2663 | exp->elts[pc + 2].symbol, | |
2664 | exp->elts[pc + 1].block); | |
2665 | exp = *expp; | |
2666 | } | |
14f9c5c9 AS |
2667 | break; |
2668 | ||
2669 | case OP_FUNCALL: | |
2670 | { | |
4c4b4cd2 | 2671 | if (exp->elts[pc + 3].opcode == OP_VAR_VALUE |
76a01679 | 2672 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
4c4b4cd2 PH |
2673 | { |
2674 | struct ada_symbol_info *candidates; | |
2675 | int n_candidates; | |
2676 | ||
2677 | n_candidates = | |
76a01679 JB |
2678 | ada_lookup_symbol_list (SYMBOL_LINKAGE_NAME |
2679 | (exp->elts[pc + 5].symbol), | |
2680 | exp->elts[pc + 4].block, VAR_DOMAIN, | |
2681 | &candidates); | |
4c4b4cd2 PH |
2682 | if (n_candidates == 1) |
2683 | i = 0; | |
2684 | else | |
2685 | { | |
06d5cf63 JB |
2686 | i = ada_resolve_function |
2687 | (candidates, n_candidates, | |
2688 | argvec, nargs, | |
2689 | SYMBOL_LINKAGE_NAME (exp->elts[pc + 5].symbol), | |
2690 | context_type); | |
4c4b4cd2 PH |
2691 | if (i < 0) |
2692 | error ("Could not find a match for %s", | |
2693 | SYMBOL_PRINT_NAME (exp->elts[pc + 5].symbol)); | |
2694 | } | |
2695 | ||
2696 | exp->elts[pc + 4].block = candidates[i].block; | |
2697 | exp->elts[pc + 5].symbol = candidates[i].sym; | |
1265e4aa JB |
2698 | if (innermost_block == NULL |
2699 | || contained_in (candidates[i].block, innermost_block)) | |
4c4b4cd2 PH |
2700 | innermost_block = candidates[i].block; |
2701 | } | |
14f9c5c9 AS |
2702 | } |
2703 | break; | |
2704 | case BINOP_ADD: | |
2705 | case BINOP_SUB: | |
2706 | case BINOP_MUL: | |
2707 | case BINOP_DIV: | |
2708 | case BINOP_REM: | |
2709 | case BINOP_MOD: | |
2710 | case BINOP_CONCAT: | |
2711 | case BINOP_BITWISE_AND: | |
2712 | case BINOP_BITWISE_IOR: | |
2713 | case BINOP_BITWISE_XOR: | |
2714 | case BINOP_EQUAL: | |
2715 | case BINOP_NOTEQUAL: | |
2716 | case BINOP_LESS: | |
2717 | case BINOP_GTR: | |
2718 | case BINOP_LEQ: | |
2719 | case BINOP_GEQ: | |
2720 | case BINOP_EXP: | |
2721 | case UNOP_NEG: | |
2722 | case UNOP_PLUS: | |
2723 | case UNOP_LOGICAL_NOT: | |
2724 | case UNOP_ABS: | |
2725 | if (possible_user_operator_p (op, argvec)) | |
4c4b4cd2 PH |
2726 | { |
2727 | struct ada_symbol_info *candidates; | |
2728 | int n_candidates; | |
2729 | ||
2730 | n_candidates = | |
2731 | ada_lookup_symbol_list (ada_encode (ada_decoded_op_name (op)), | |
2732 | (struct block *) NULL, VAR_DOMAIN, | |
2733 | &candidates); | |
2734 | i = ada_resolve_function (candidates, n_candidates, argvec, nargs, | |
76a01679 | 2735 | ada_decoded_op_name (op), NULL); |
4c4b4cd2 PH |
2736 | if (i < 0) |
2737 | break; | |
2738 | ||
76a01679 JB |
2739 | replace_operator_with_call (expp, pc, nargs, 1, |
2740 | candidates[i].sym, candidates[i].block); | |
4c4b4cd2 PH |
2741 | exp = *expp; |
2742 | } | |
14f9c5c9 | 2743 | break; |
4c4b4cd2 PH |
2744 | |
2745 | case OP_TYPE: | |
2746 | return NULL; | |
14f9c5c9 AS |
2747 | } |
2748 | ||
2749 | *pos = pc; | |
2750 | return evaluate_subexp_type (exp, pos); | |
2751 | } | |
2752 | ||
2753 | /* Return non-zero if formal type FTYPE matches actual type ATYPE. If | |
4c4b4cd2 PH |
2754 | MAY_DEREF is non-zero, the formal may be a pointer and the actual |
2755 | a non-pointer. A type of 'void' (which is never a valid expression type) | |
2756 | by convention matches anything. */ | |
14f9c5c9 | 2757 | /* The term "match" here is rather loose. The match is heuristic and |
4c4b4cd2 | 2758 | liberal. FIXME: TOO liberal, in fact. */ |
14f9c5c9 AS |
2759 | |
2760 | static int | |
4dc81987 | 2761 | ada_type_match (struct type *ftype, struct type *atype, int may_deref) |
14f9c5c9 | 2762 | { |
61ee279c PH |
2763 | ftype = ada_check_typedef (ftype); |
2764 | atype = ada_check_typedef (atype); | |
14f9c5c9 AS |
2765 | |
2766 | if (TYPE_CODE (ftype) == TYPE_CODE_REF) | |
2767 | ftype = TYPE_TARGET_TYPE (ftype); | |
2768 | if (TYPE_CODE (atype) == TYPE_CODE_REF) | |
2769 | atype = TYPE_TARGET_TYPE (atype); | |
2770 | ||
d2e4a39e | 2771 | if (TYPE_CODE (ftype) == TYPE_CODE_VOID |
14f9c5c9 AS |
2772 | || TYPE_CODE (atype) == TYPE_CODE_VOID) |
2773 | return 1; | |
2774 | ||
d2e4a39e | 2775 | switch (TYPE_CODE (ftype)) |
14f9c5c9 AS |
2776 | { |
2777 | default: | |
2778 | return 1; | |
2779 | case TYPE_CODE_PTR: | |
2780 | if (TYPE_CODE (atype) == TYPE_CODE_PTR) | |
4c4b4cd2 PH |
2781 | return ada_type_match (TYPE_TARGET_TYPE (ftype), |
2782 | TYPE_TARGET_TYPE (atype), 0); | |
d2e4a39e | 2783 | else |
1265e4aa JB |
2784 | return (may_deref |
2785 | && ada_type_match (TYPE_TARGET_TYPE (ftype), atype, 0)); | |
14f9c5c9 AS |
2786 | case TYPE_CODE_INT: |
2787 | case TYPE_CODE_ENUM: | |
2788 | case TYPE_CODE_RANGE: | |
2789 | switch (TYPE_CODE (atype)) | |
4c4b4cd2 PH |
2790 | { |
2791 | case TYPE_CODE_INT: | |
2792 | case TYPE_CODE_ENUM: | |
2793 | case TYPE_CODE_RANGE: | |
2794 | return 1; | |
2795 | default: | |
2796 | return 0; | |
2797 | } | |
14f9c5c9 AS |
2798 | |
2799 | case TYPE_CODE_ARRAY: | |
d2e4a39e | 2800 | return (TYPE_CODE (atype) == TYPE_CODE_ARRAY |
4c4b4cd2 | 2801 | || ada_is_array_descriptor_type (atype)); |
14f9c5c9 AS |
2802 | |
2803 | case TYPE_CODE_STRUCT: | |
4c4b4cd2 PH |
2804 | if (ada_is_array_descriptor_type (ftype)) |
2805 | return (TYPE_CODE (atype) == TYPE_CODE_ARRAY | |
2806 | || ada_is_array_descriptor_type (atype)); | |
14f9c5c9 | 2807 | else |
4c4b4cd2 PH |
2808 | return (TYPE_CODE (atype) == TYPE_CODE_STRUCT |
2809 | && !ada_is_array_descriptor_type (atype)); | |
14f9c5c9 AS |
2810 | |
2811 | case TYPE_CODE_UNION: | |
2812 | case TYPE_CODE_FLT: | |
2813 | return (TYPE_CODE (atype) == TYPE_CODE (ftype)); | |
2814 | } | |
2815 | } | |
2816 | ||
2817 | /* Return non-zero if the formals of FUNC "sufficiently match" the | |
2818 | vector of actual argument types ACTUALS of size N_ACTUALS. FUNC | |
2819 | may also be an enumeral, in which case it is treated as a 0- | |
4c4b4cd2 | 2820 | argument function. */ |
14f9c5c9 AS |
2821 | |
2822 | static int | |
d2e4a39e | 2823 | ada_args_match (struct symbol *func, struct value **actuals, int n_actuals) |
14f9c5c9 AS |
2824 | { |
2825 | int i; | |
d2e4a39e | 2826 | struct type *func_type = SYMBOL_TYPE (func); |
14f9c5c9 | 2827 | |
1265e4aa JB |
2828 | if (SYMBOL_CLASS (func) == LOC_CONST |
2829 | && TYPE_CODE (func_type) == TYPE_CODE_ENUM) | |
14f9c5c9 AS |
2830 | return (n_actuals == 0); |
2831 | else if (func_type == NULL || TYPE_CODE (func_type) != TYPE_CODE_FUNC) | |
2832 | return 0; | |
2833 | ||
2834 | if (TYPE_NFIELDS (func_type) != n_actuals) | |
2835 | return 0; | |
2836 | ||
2837 | for (i = 0; i < n_actuals; i += 1) | |
2838 | { | |
4c4b4cd2 | 2839 | if (actuals[i] == NULL) |
76a01679 JB |
2840 | return 0; |
2841 | else | |
2842 | { | |
61ee279c PH |
2843 | struct type *ftype = ada_check_typedef (TYPE_FIELD_TYPE (func_type, i)); |
2844 | struct type *atype = ada_check_typedef (VALUE_TYPE (actuals[i])); | |
4c4b4cd2 | 2845 | |
76a01679 JB |
2846 | if (!ada_type_match (ftype, atype, 1)) |
2847 | return 0; | |
2848 | } | |
14f9c5c9 AS |
2849 | } |
2850 | return 1; | |
2851 | } | |
2852 | ||
2853 | /* False iff function type FUNC_TYPE definitely does not produce a value | |
2854 | compatible with type CONTEXT_TYPE. Conservatively returns 1 if | |
2855 | FUNC_TYPE is not a valid function type with a non-null return type | |
2856 | or an enumerated type. A null CONTEXT_TYPE indicates any non-void type. */ | |
2857 | ||
2858 | static int | |
d2e4a39e | 2859 | return_match (struct type *func_type, struct type *context_type) |
14f9c5c9 | 2860 | { |
d2e4a39e | 2861 | struct type *return_type; |
14f9c5c9 AS |
2862 | |
2863 | if (func_type == NULL) | |
2864 | return 1; | |
2865 | ||
4c4b4cd2 PH |
2866 | if (TYPE_CODE (func_type) == TYPE_CODE_FUNC) |
2867 | return_type = base_type (TYPE_TARGET_TYPE (func_type)); | |
2868 | else | |
2869 | return_type = base_type (func_type); | |
14f9c5c9 AS |
2870 | if (return_type == NULL) |
2871 | return 1; | |
2872 | ||
4c4b4cd2 | 2873 | context_type = base_type (context_type); |
14f9c5c9 AS |
2874 | |
2875 | if (TYPE_CODE (return_type) == TYPE_CODE_ENUM) | |
2876 | return context_type == NULL || return_type == context_type; | |
2877 | else if (context_type == NULL) | |
2878 | return TYPE_CODE (return_type) != TYPE_CODE_VOID; | |
2879 | else | |
2880 | return TYPE_CODE (return_type) == TYPE_CODE (context_type); | |
2881 | } | |
2882 | ||
2883 | ||
4c4b4cd2 | 2884 | /* Returns the index in SYMS[0..NSYMS-1] that contains the symbol for the |
14f9c5c9 | 2885 | function (if any) that matches the types of the NARGS arguments in |
4c4b4cd2 PH |
2886 | ARGS. If CONTEXT_TYPE is non-null and there is at least one match |
2887 | that returns that type, then eliminate matches that don't. If | |
2888 | CONTEXT_TYPE is void and there is at least one match that does not | |
2889 | return void, eliminate all matches that do. | |
2890 | ||
14f9c5c9 AS |
2891 | Asks the user if there is more than one match remaining. Returns -1 |
2892 | if there is no such symbol or none is selected. NAME is used | |
4c4b4cd2 PH |
2893 | solely for messages. May re-arrange and modify SYMS in |
2894 | the process; the index returned is for the modified vector. */ | |
14f9c5c9 | 2895 | |
4c4b4cd2 PH |
2896 | static int |
2897 | ada_resolve_function (struct ada_symbol_info syms[], | |
2898 | int nsyms, struct value **args, int nargs, | |
2899 | const char *name, struct type *context_type) | |
14f9c5c9 AS |
2900 | { |
2901 | int k; | |
4c4b4cd2 | 2902 | int m; /* Number of hits */ |
d2e4a39e AS |
2903 | struct type *fallback; |
2904 | struct type *return_type; | |
14f9c5c9 AS |
2905 | |
2906 | return_type = context_type; | |
2907 | if (context_type == NULL) | |
2908 | fallback = builtin_type_void; | |
2909 | else | |
2910 | fallback = NULL; | |
2911 | ||
d2e4a39e | 2912 | m = 0; |
14f9c5c9 AS |
2913 | while (1) |
2914 | { | |
2915 | for (k = 0; k < nsyms; k += 1) | |
4c4b4cd2 | 2916 | { |
61ee279c | 2917 | struct type *type = ada_check_typedef (SYMBOL_TYPE (syms[k].sym)); |
4c4b4cd2 PH |
2918 | |
2919 | if (ada_args_match (syms[k].sym, args, nargs) | |
2920 | && return_match (type, return_type)) | |
2921 | { | |
2922 | syms[m] = syms[k]; | |
2923 | m += 1; | |
2924 | } | |
2925 | } | |
14f9c5c9 | 2926 | if (m > 0 || return_type == fallback) |
4c4b4cd2 | 2927 | break; |
14f9c5c9 | 2928 | else |
4c4b4cd2 | 2929 | return_type = fallback; |
14f9c5c9 AS |
2930 | } |
2931 | ||
2932 | if (m == 0) | |
2933 | return -1; | |
2934 | else if (m > 1) | |
2935 | { | |
2936 | printf_filtered ("Multiple matches for %s\n", name); | |
4c4b4cd2 | 2937 | user_select_syms (syms, m, 1); |
14f9c5c9 AS |
2938 | return 0; |
2939 | } | |
2940 | return 0; | |
2941 | } | |
2942 | ||
4c4b4cd2 PH |
2943 | /* Returns true (non-zero) iff decoded name N0 should appear before N1 |
2944 | in a listing of choices during disambiguation (see sort_choices, below). | |
2945 | The idea is that overloadings of a subprogram name from the | |
2946 | same package should sort in their source order. We settle for ordering | |
2947 | such symbols by their trailing number (__N or $N). */ | |
2948 | ||
14f9c5c9 | 2949 | static int |
4c4b4cd2 | 2950 | encoded_ordered_before (char *N0, char *N1) |
14f9c5c9 AS |
2951 | { |
2952 | if (N1 == NULL) | |
2953 | return 0; | |
2954 | else if (N0 == NULL) | |
2955 | return 1; | |
2956 | else | |
2957 | { | |
2958 | int k0, k1; | |
d2e4a39e | 2959 | for (k0 = strlen (N0) - 1; k0 > 0 && isdigit (N0[k0]); k0 -= 1) |
4c4b4cd2 | 2960 | ; |
d2e4a39e | 2961 | for (k1 = strlen (N1) - 1; k1 > 0 && isdigit (N1[k1]); k1 -= 1) |
4c4b4cd2 | 2962 | ; |
d2e4a39e | 2963 | if ((N0[k0] == '_' || N0[k0] == '$') && N0[k0 + 1] != '\000' |
4c4b4cd2 PH |
2964 | && (N1[k1] == '_' || N1[k1] == '$') && N1[k1 + 1] != '\000') |
2965 | { | |
2966 | int n0, n1; | |
2967 | n0 = k0; | |
2968 | while (N0[n0] == '_' && n0 > 0 && N0[n0 - 1] == '_') | |
2969 | n0 -= 1; | |
2970 | n1 = k1; | |
2971 | while (N1[n1] == '_' && n1 > 0 && N1[n1 - 1] == '_') | |
2972 | n1 -= 1; | |
2973 | if (n0 == n1 && strncmp (N0, N1, n0) == 0) | |
2974 | return (atoi (N0 + k0 + 1) < atoi (N1 + k1 + 1)); | |
2975 | } | |
14f9c5c9 AS |
2976 | return (strcmp (N0, N1) < 0); |
2977 | } | |
2978 | } | |
d2e4a39e | 2979 | |
4c4b4cd2 PH |
2980 | /* Sort SYMS[0..NSYMS-1] to put the choices in a canonical order by the |
2981 | encoded names. */ | |
2982 | ||
d2e4a39e | 2983 | static void |
4c4b4cd2 | 2984 | sort_choices (struct ada_symbol_info syms[], int nsyms) |
14f9c5c9 | 2985 | { |
4c4b4cd2 | 2986 | int i; |
d2e4a39e | 2987 | for (i = 1; i < nsyms; i += 1) |
14f9c5c9 | 2988 | { |
4c4b4cd2 | 2989 | struct ada_symbol_info sym = syms[i]; |
14f9c5c9 AS |
2990 | int j; |
2991 | ||
d2e4a39e | 2992 | for (j = i - 1; j >= 0; j -= 1) |
4c4b4cd2 PH |
2993 | { |
2994 | if (encoded_ordered_before (SYMBOL_LINKAGE_NAME (syms[j].sym), | |
2995 | SYMBOL_LINKAGE_NAME (sym.sym))) | |
2996 | break; | |
2997 | syms[j + 1] = syms[j]; | |
2998 | } | |
d2e4a39e | 2999 | syms[j + 1] = sym; |
14f9c5c9 AS |
3000 | } |
3001 | } | |
3002 | ||
4c4b4cd2 PH |
3003 | /* Given a list of NSYMS symbols in SYMS, select up to MAX_RESULTS>0 |
3004 | by asking the user (if necessary), returning the number selected, | |
3005 | and setting the first elements of SYMS items. Error if no symbols | |
3006 | selected. */ | |
14f9c5c9 AS |
3007 | |
3008 | /* NOTE: Adapted from decode_line_2 in symtab.c, with which it ought | |
4c4b4cd2 | 3009 | to be re-integrated one of these days. */ |
14f9c5c9 AS |
3010 | |
3011 | int | |
4c4b4cd2 | 3012 | user_select_syms (struct ada_symbol_info *syms, int nsyms, int max_results) |
14f9c5c9 AS |
3013 | { |
3014 | int i; | |
d2e4a39e | 3015 | int *chosen = (int *) alloca (sizeof (int) * nsyms); |
14f9c5c9 AS |
3016 | int n_chosen; |
3017 | int first_choice = (max_results == 1) ? 1 : 2; | |
3018 | ||
3019 | if (max_results < 1) | |
3020 | error ("Request to select 0 symbols!"); | |
3021 | if (nsyms <= 1) | |
3022 | return nsyms; | |
3023 | ||
d2e4a39e | 3024 | printf_unfiltered ("[0] cancel\n"); |
14f9c5c9 | 3025 | if (max_results > 1) |
d2e4a39e | 3026 | printf_unfiltered ("[1] all\n"); |
14f9c5c9 | 3027 | |
4c4b4cd2 | 3028 | sort_choices (syms, nsyms); |
14f9c5c9 AS |
3029 | |
3030 | for (i = 0; i < nsyms; i += 1) | |
3031 | { | |
4c4b4cd2 PH |
3032 | if (syms[i].sym == NULL) |
3033 | continue; | |
3034 | ||
3035 | if (SYMBOL_CLASS (syms[i].sym) == LOC_BLOCK) | |
3036 | { | |
76a01679 JB |
3037 | struct symtab_and_line sal = |
3038 | find_function_start_sal (syms[i].sym, 1); | |
3039 | printf_unfiltered ("[%d] %s at %s:%d\n", i + first_choice, | |
4c4b4cd2 | 3040 | SYMBOL_PRINT_NAME (syms[i].sym), |
06d5cf63 JB |
3041 | (sal.symtab == NULL |
3042 | ? "<no source file available>" | |
3043 | : sal.symtab->filename), sal.line); | |
4c4b4cd2 PH |
3044 | continue; |
3045 | } | |
d2e4a39e | 3046 | else |
4c4b4cd2 PH |
3047 | { |
3048 | int is_enumeral = | |
3049 | (SYMBOL_CLASS (syms[i].sym) == LOC_CONST | |
3050 | && SYMBOL_TYPE (syms[i].sym) != NULL | |
3051 | && TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) == TYPE_CODE_ENUM); | |
3052 | struct symtab *symtab = symtab_for_sym (syms[i].sym); | |
3053 | ||
3054 | if (SYMBOL_LINE (syms[i].sym) != 0 && symtab != NULL) | |
3055 | printf_unfiltered ("[%d] %s at %s:%d\n", | |
3056 | i + first_choice, | |
3057 | SYMBOL_PRINT_NAME (syms[i].sym), | |
3058 | symtab->filename, SYMBOL_LINE (syms[i].sym)); | |
76a01679 JB |
3059 | else if (is_enumeral |
3060 | && TYPE_NAME (SYMBOL_TYPE (syms[i].sym)) != NULL) | |
4c4b4cd2 PH |
3061 | { |
3062 | printf_unfiltered ("[%d] ", i + first_choice); | |
76a01679 JB |
3063 | ada_print_type (SYMBOL_TYPE (syms[i].sym), NULL, |
3064 | gdb_stdout, -1, 0); | |
4c4b4cd2 PH |
3065 | printf_unfiltered ("'(%s) (enumeral)\n", |
3066 | SYMBOL_PRINT_NAME (syms[i].sym)); | |
3067 | } | |
3068 | else if (symtab != NULL) | |
3069 | printf_unfiltered (is_enumeral | |
3070 | ? "[%d] %s in %s (enumeral)\n" | |
3071 | : "[%d] %s at %s:?\n", | |
3072 | i + first_choice, | |
3073 | SYMBOL_PRINT_NAME (syms[i].sym), | |
3074 | symtab->filename); | |
3075 | else | |
3076 | printf_unfiltered (is_enumeral | |
3077 | ? "[%d] %s (enumeral)\n" | |
3078 | : "[%d] %s at ?\n", | |
3079 | i + first_choice, | |
3080 | SYMBOL_PRINT_NAME (syms[i].sym)); | |
3081 | } | |
14f9c5c9 | 3082 | } |
d2e4a39e | 3083 | |
14f9c5c9 | 3084 | n_chosen = get_selections (chosen, nsyms, max_results, max_results > 1, |
4c4b4cd2 | 3085 | "overload-choice"); |
14f9c5c9 AS |
3086 | |
3087 | for (i = 0; i < n_chosen; i += 1) | |
4c4b4cd2 | 3088 | syms[i] = syms[chosen[i]]; |
14f9c5c9 AS |
3089 | |
3090 | return n_chosen; | |
3091 | } | |
3092 | ||
3093 | /* Read and validate a set of numeric choices from the user in the | |
4c4b4cd2 | 3094 | range 0 .. N_CHOICES-1. Place the results in increasing |
14f9c5c9 AS |
3095 | order in CHOICES[0 .. N-1], and return N. |
3096 | ||
3097 | The user types choices as a sequence of numbers on one line | |
3098 | separated by blanks, encoding them as follows: | |
3099 | ||
4c4b4cd2 | 3100 | + A choice of 0 means to cancel the selection, throwing an error. |
14f9c5c9 AS |
3101 | + If IS_ALL_CHOICE, a choice of 1 selects the entire set 0 .. N_CHOICES-1. |
3102 | + The user chooses k by typing k+IS_ALL_CHOICE+1. | |
3103 | ||
4c4b4cd2 | 3104 | The user is not allowed to choose more than MAX_RESULTS values. |
14f9c5c9 AS |
3105 | |
3106 | ANNOTATION_SUFFIX, if present, is used to annotate the input | |
4c4b4cd2 | 3107 | prompts (for use with the -f switch). */ |
14f9c5c9 AS |
3108 | |
3109 | int | |
d2e4a39e | 3110 | get_selections (int *choices, int n_choices, int max_results, |
4c4b4cd2 | 3111 | int is_all_choice, char *annotation_suffix) |
14f9c5c9 | 3112 | { |
d2e4a39e AS |
3113 | char *args; |
3114 | const char *prompt; | |
14f9c5c9 AS |
3115 | int n_chosen; |
3116 | int first_choice = is_all_choice ? 2 : 1; | |
d2e4a39e | 3117 | |
14f9c5c9 AS |
3118 | prompt = getenv ("PS2"); |
3119 | if (prompt == NULL) | |
3120 | prompt = ">"; | |
3121 | ||
3122 | printf_unfiltered ("%s ", prompt); | |
3123 | gdb_flush (gdb_stdout); | |
3124 | ||
3125 | args = command_line_input ((char *) NULL, 0, annotation_suffix); | |
d2e4a39e | 3126 | |
14f9c5c9 AS |
3127 | if (args == NULL) |
3128 | error_no_arg ("one or more choice numbers"); | |
3129 | ||
3130 | n_chosen = 0; | |
76a01679 | 3131 | |
4c4b4cd2 PH |
3132 | /* Set choices[0 .. n_chosen-1] to the users' choices in ascending |
3133 | order, as given in args. Choices are validated. */ | |
14f9c5c9 AS |
3134 | while (1) |
3135 | { | |
d2e4a39e | 3136 | char *args2; |
14f9c5c9 AS |
3137 | int choice, j; |
3138 | ||
3139 | while (isspace (*args)) | |
4c4b4cd2 | 3140 | args += 1; |
14f9c5c9 | 3141 | if (*args == '\0' && n_chosen == 0) |
4c4b4cd2 | 3142 | error_no_arg ("one or more choice numbers"); |
14f9c5c9 | 3143 | else if (*args == '\0') |
4c4b4cd2 | 3144 | break; |
14f9c5c9 AS |
3145 | |
3146 | choice = strtol (args, &args2, 10); | |
d2e4a39e | 3147 | if (args == args2 || choice < 0 |
4c4b4cd2 PH |
3148 | || choice > n_choices + first_choice - 1) |
3149 | error ("Argument must be choice number"); | |
14f9c5c9 AS |
3150 | args = args2; |
3151 | ||
d2e4a39e | 3152 | if (choice == 0) |
4c4b4cd2 | 3153 | error ("cancelled"); |
14f9c5c9 AS |
3154 | |
3155 | if (choice < first_choice) | |
4c4b4cd2 PH |
3156 | { |
3157 | n_chosen = n_choices; | |
3158 | for (j = 0; j < n_choices; j += 1) | |
3159 | choices[j] = j; | |
3160 | break; | |
3161 | } | |
14f9c5c9 AS |
3162 | choice -= first_choice; |
3163 | ||
d2e4a39e | 3164 | for (j = n_chosen - 1; j >= 0 && choice < choices[j]; j -= 1) |
4c4b4cd2 PH |
3165 | { |
3166 | } | |
14f9c5c9 AS |
3167 | |
3168 | if (j < 0 || choice != choices[j]) | |
4c4b4cd2 PH |
3169 | { |
3170 | int k; | |
3171 | for (k = n_chosen - 1; k > j; k -= 1) | |
3172 | choices[k + 1] = choices[k]; | |
3173 | choices[j + 1] = choice; | |
3174 | n_chosen += 1; | |
3175 | } | |
14f9c5c9 AS |
3176 | } |
3177 | ||
3178 | if (n_chosen > max_results) | |
3179 | error ("Select no more than %d of the above", max_results); | |
d2e4a39e | 3180 | |
14f9c5c9 AS |
3181 | return n_chosen; |
3182 | } | |
3183 | ||
4c4b4cd2 PH |
3184 | /* Replace the operator of length OPLEN at position PC in *EXPP with a call |
3185 | on the function identified by SYM and BLOCK, and taking NARGS | |
3186 | arguments. Update *EXPP as needed to hold more space. */ | |
14f9c5c9 AS |
3187 | |
3188 | static void | |
d2e4a39e | 3189 | replace_operator_with_call (struct expression **expp, int pc, int nargs, |
4c4b4cd2 PH |
3190 | int oplen, struct symbol *sym, |
3191 | struct block *block) | |
14f9c5c9 AS |
3192 | { |
3193 | /* A new expression, with 6 more elements (3 for funcall, 4 for function | |
4c4b4cd2 | 3194 | symbol, -oplen for operator being replaced). */ |
d2e4a39e | 3195 | struct expression *newexp = (struct expression *) |
14f9c5c9 | 3196 | xmalloc (sizeof (struct expression) |
4c4b4cd2 | 3197 | + EXP_ELEM_TO_BYTES ((*expp)->nelts + 7 - oplen)); |
d2e4a39e | 3198 | struct expression *exp = *expp; |
14f9c5c9 AS |
3199 | |
3200 | newexp->nelts = exp->nelts + 7 - oplen; | |
3201 | newexp->language_defn = exp->language_defn; | |
3202 | memcpy (newexp->elts, exp->elts, EXP_ELEM_TO_BYTES (pc)); | |
d2e4a39e | 3203 | memcpy (newexp->elts + pc + 7, exp->elts + pc + oplen, |
4c4b4cd2 | 3204 | EXP_ELEM_TO_BYTES (exp->nelts - pc - oplen)); |
14f9c5c9 AS |
3205 | |
3206 | newexp->elts[pc].opcode = newexp->elts[pc + 2].opcode = OP_FUNCALL; | |
3207 | newexp->elts[pc + 1].longconst = (LONGEST) nargs; | |
3208 | ||
3209 | newexp->elts[pc + 3].opcode = newexp->elts[pc + 6].opcode = OP_VAR_VALUE; | |
3210 | newexp->elts[pc + 4].block = block; | |
3211 | newexp->elts[pc + 5].symbol = sym; | |
3212 | ||
3213 | *expp = newexp; | |
aacb1f0a | 3214 | xfree (exp); |
d2e4a39e | 3215 | } |
14f9c5c9 AS |
3216 | |
3217 | /* Type-class predicates */ | |
3218 | ||
4c4b4cd2 PH |
3219 | /* True iff TYPE is numeric (i.e., an INT, RANGE (of numeric type), |
3220 | or FLOAT). */ | |
14f9c5c9 AS |
3221 | |
3222 | static int | |
d2e4a39e | 3223 | numeric_type_p (struct type *type) |
14f9c5c9 AS |
3224 | { |
3225 | if (type == NULL) | |
3226 | return 0; | |
d2e4a39e AS |
3227 | else |
3228 | { | |
3229 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3230 | { |
3231 | case TYPE_CODE_INT: | |
3232 | case TYPE_CODE_FLT: | |
3233 | return 1; | |
3234 | case TYPE_CODE_RANGE: | |
3235 | return (type == TYPE_TARGET_TYPE (type) | |
3236 | || numeric_type_p (TYPE_TARGET_TYPE (type))); | |
3237 | default: | |
3238 | return 0; | |
3239 | } | |
d2e4a39e | 3240 | } |
14f9c5c9 AS |
3241 | } |
3242 | ||
4c4b4cd2 | 3243 | /* True iff TYPE is integral (an INT or RANGE of INTs). */ |
14f9c5c9 AS |
3244 | |
3245 | static int | |
d2e4a39e | 3246 | integer_type_p (struct type *type) |
14f9c5c9 AS |
3247 | { |
3248 | if (type == NULL) | |
3249 | return 0; | |
d2e4a39e AS |
3250 | else |
3251 | { | |
3252 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3253 | { |
3254 | case TYPE_CODE_INT: | |
3255 | return 1; | |
3256 | case TYPE_CODE_RANGE: | |
3257 | return (type == TYPE_TARGET_TYPE (type) | |
3258 | || integer_type_p (TYPE_TARGET_TYPE (type))); | |
3259 | default: | |
3260 | return 0; | |
3261 | } | |
d2e4a39e | 3262 | } |
14f9c5c9 AS |
3263 | } |
3264 | ||
4c4b4cd2 | 3265 | /* True iff TYPE is scalar (INT, RANGE, FLOAT, ENUM). */ |
14f9c5c9 AS |
3266 | |
3267 | static int | |
d2e4a39e | 3268 | scalar_type_p (struct type *type) |
14f9c5c9 AS |
3269 | { |
3270 | if (type == NULL) | |
3271 | return 0; | |
d2e4a39e AS |
3272 | else |
3273 | { | |
3274 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3275 | { |
3276 | case TYPE_CODE_INT: | |
3277 | case TYPE_CODE_RANGE: | |
3278 | case TYPE_CODE_ENUM: | |
3279 | case TYPE_CODE_FLT: | |
3280 | return 1; | |
3281 | default: | |
3282 | return 0; | |
3283 | } | |
d2e4a39e | 3284 | } |
14f9c5c9 AS |
3285 | } |
3286 | ||
4c4b4cd2 | 3287 | /* True iff TYPE is discrete (INT, RANGE, ENUM). */ |
14f9c5c9 AS |
3288 | |
3289 | static int | |
d2e4a39e | 3290 | discrete_type_p (struct type *type) |
14f9c5c9 AS |
3291 | { |
3292 | if (type == NULL) | |
3293 | return 0; | |
d2e4a39e AS |
3294 | else |
3295 | { | |
3296 | switch (TYPE_CODE (type)) | |
4c4b4cd2 PH |
3297 | { |
3298 | case TYPE_CODE_INT: | |
3299 | case TYPE_CODE_RANGE: | |
3300 | case TYPE_CODE_ENUM: | |
3301 | return 1; | |
3302 | default: | |
3303 | return 0; | |
3304 | } | |
d2e4a39e | 3305 | } |
14f9c5c9 AS |
3306 | } |
3307 | ||
4c4b4cd2 PH |
3308 | /* Returns non-zero if OP with operands in the vector ARGS could be |
3309 | a user-defined function. Errs on the side of pre-defined operators | |
3310 | (i.e., result 0). */ | |
14f9c5c9 AS |
3311 | |
3312 | static int | |
d2e4a39e | 3313 | possible_user_operator_p (enum exp_opcode op, struct value *args[]) |
14f9c5c9 | 3314 | { |
76a01679 | 3315 | struct type *type0 = |
61ee279c | 3316 | (args[0] == NULL) ? NULL : ada_check_typedef (VALUE_TYPE (args[0])); |
d2e4a39e | 3317 | struct type *type1 = |
61ee279c | 3318 | (args[1] == NULL) ? NULL : ada_check_typedef (VALUE_TYPE (args[1])); |
d2e4a39e | 3319 | |
4c4b4cd2 PH |
3320 | if (type0 == NULL) |
3321 | return 0; | |
3322 | ||
14f9c5c9 AS |
3323 | switch (op) |
3324 | { | |
3325 | default: | |
3326 | return 0; | |
3327 | ||
3328 | case BINOP_ADD: | |
3329 | case BINOP_SUB: | |
3330 | case BINOP_MUL: | |
3331 | case BINOP_DIV: | |
d2e4a39e | 3332 | return (!(numeric_type_p (type0) && numeric_type_p (type1))); |
14f9c5c9 AS |
3333 | |
3334 | case BINOP_REM: | |
3335 | case BINOP_MOD: | |
3336 | case BINOP_BITWISE_AND: | |
3337 | case BINOP_BITWISE_IOR: | |
3338 | case BINOP_BITWISE_XOR: | |
d2e4a39e | 3339 | return (!(integer_type_p (type0) && integer_type_p (type1))); |
14f9c5c9 AS |
3340 | |
3341 | case BINOP_EQUAL: | |
3342 | case BINOP_NOTEQUAL: | |
3343 | case BINOP_LESS: | |
3344 | case BINOP_GTR: | |
3345 | case BINOP_LEQ: | |
3346 | case BINOP_GEQ: | |
d2e4a39e | 3347 | return (!(scalar_type_p (type0) && scalar_type_p (type1))); |
14f9c5c9 AS |
3348 | |
3349 | case BINOP_CONCAT: | |
1265e4aa JB |
3350 | return |
3351 | ((TYPE_CODE (type0) != TYPE_CODE_ARRAY | |
3352 | && (TYPE_CODE (type0) != TYPE_CODE_PTR | |
3353 | || TYPE_CODE (TYPE_TARGET_TYPE (type0)) != TYPE_CODE_ARRAY)) | |
3354 | || (TYPE_CODE (type1) != TYPE_CODE_ARRAY | |
3355 | && (TYPE_CODE (type1) != TYPE_CODE_PTR | |
c3e5cd34 PH |
3356 | || (TYPE_CODE (TYPE_TARGET_TYPE (type1)) |
3357 | != TYPE_CODE_ARRAY)))); | |
14f9c5c9 AS |
3358 | |
3359 | case BINOP_EXP: | |
d2e4a39e | 3360 | return (!(numeric_type_p (type0) && integer_type_p (type1))); |
14f9c5c9 AS |
3361 | |
3362 | case UNOP_NEG: | |
3363 | case UNOP_PLUS: | |
3364 | case UNOP_LOGICAL_NOT: | |
d2e4a39e AS |
3365 | case UNOP_ABS: |
3366 | return (!numeric_type_p (type0)); | |
14f9c5c9 AS |
3367 | |
3368 | } | |
3369 | } | |
3370 | \f | |
4c4b4cd2 | 3371 | /* Renaming */ |
14f9c5c9 | 3372 | |
4c4b4cd2 PH |
3373 | /* NOTE: In the following, we assume that a renaming type's name may |
3374 | have an ___XD suffix. It would be nice if this went away at some | |
3375 | point. */ | |
14f9c5c9 AS |
3376 | |
3377 | /* If TYPE encodes a renaming, returns the renaming suffix, which | |
4c4b4cd2 PH |
3378 | is XR for an object renaming, XRP for a procedure renaming, XRE for |
3379 | an exception renaming, and XRS for a subprogram renaming. Returns | |
3380 | NULL if NAME encodes none of these. */ | |
3381 | ||
d2e4a39e AS |
3382 | const char * |
3383 | ada_renaming_type (struct type *type) | |
14f9c5c9 AS |
3384 | { |
3385 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_ENUM) | |
3386 | { | |
d2e4a39e AS |
3387 | const char *name = type_name_no_tag (type); |
3388 | const char *suffix = (name == NULL) ? NULL : strstr (name, "___XR"); | |
3389 | if (suffix == NULL | |
4c4b4cd2 PH |
3390 | || (suffix[5] != '\000' && strchr ("PES_", suffix[5]) == NULL)) |
3391 | return NULL; | |
14f9c5c9 | 3392 | else |
4c4b4cd2 | 3393 | return suffix + 3; |
14f9c5c9 AS |
3394 | } |
3395 | else | |
3396 | return NULL; | |
3397 | } | |
3398 | ||
4c4b4cd2 PH |
3399 | /* Return non-zero iff SYM encodes an object renaming. */ |
3400 | ||
14f9c5c9 | 3401 | int |
d2e4a39e | 3402 | ada_is_object_renaming (struct symbol *sym) |
14f9c5c9 | 3403 | { |
d2e4a39e AS |
3404 | const char *renaming_type = ada_renaming_type (SYMBOL_TYPE (sym)); |
3405 | return renaming_type != NULL | |
14f9c5c9 AS |
3406 | && (renaming_type[2] == '\0' || renaming_type[2] == '_'); |
3407 | } | |
3408 | ||
3409 | /* Assuming that SYM encodes a non-object renaming, returns the original | |
4c4b4cd2 PH |
3410 | name of the renamed entity. The name is good until the end of |
3411 | parsing. */ | |
3412 | ||
3413 | char * | |
d2e4a39e | 3414 | ada_simple_renamed_entity (struct symbol *sym) |
14f9c5c9 | 3415 | { |
d2e4a39e AS |
3416 | struct type *type; |
3417 | const char *raw_name; | |
14f9c5c9 | 3418 | int len; |
d2e4a39e | 3419 | char *result; |
14f9c5c9 AS |
3420 | |
3421 | type = SYMBOL_TYPE (sym); | |
3422 | if (type == NULL || TYPE_NFIELDS (type) < 1) | |
3423 | error ("Improperly encoded renaming."); | |
3424 | ||
3425 | raw_name = TYPE_FIELD_NAME (type, 0); | |
3426 | len = (raw_name == NULL ? 0 : strlen (raw_name)) - 5; | |
3427 | if (len <= 0) | |
3428 | error ("Improperly encoded renaming."); | |
3429 | ||
3430 | result = xmalloc (len + 1); | |
14f9c5c9 AS |
3431 | strncpy (result, raw_name, len); |
3432 | result[len] = '\000'; | |
3433 | return result; | |
3434 | } | |
14f9c5c9 | 3435 | \f |
d2e4a39e | 3436 | |
4c4b4cd2 | 3437 | /* Evaluation: Function Calls */ |
14f9c5c9 | 3438 | |
4c4b4cd2 PH |
3439 | /* Return an lvalue containing the value VAL. This is the identity on |
3440 | lvalues, and otherwise has the side-effect of pushing a copy of VAL | |
3441 | on the stack, using and updating *SP as the stack pointer, and | |
3442 | returning an lvalue whose VALUE_ADDRESS points to the copy. */ | |
14f9c5c9 | 3443 | |
d2e4a39e | 3444 | static struct value * |
4c4b4cd2 | 3445 | ensure_lval (struct value *val, CORE_ADDR *sp) |
14f9c5c9 | 3446 | { |
c3e5cd34 PH |
3447 | if (! VALUE_LVAL (val)) |
3448 | { | |
61ee279c | 3449 | int len = TYPE_LENGTH (ada_check_typedef (VALUE_TYPE (val))); |
c3e5cd34 PH |
3450 | |
3451 | /* The following is taken from the structure-return code in | |
3452 | call_function_by_hand. FIXME: Therefore, some refactoring seems | |
3453 | indicated. */ | |
3454 | if (INNER_THAN (1, 2)) | |
3455 | { | |
3456 | /* Stack grows downward. Align SP and VALUE_ADDRESS (val) after | |
3457 | reserving sufficient space. */ | |
3458 | *sp -= len; | |
3459 | if (gdbarch_frame_align_p (current_gdbarch)) | |
3460 | *sp = gdbarch_frame_align (current_gdbarch, *sp); | |
3461 | VALUE_ADDRESS (val) = *sp; | |
3462 | } | |
3463 | else | |
3464 | { | |
3465 | /* Stack grows upward. Align the frame, allocate space, and | |
3466 | then again, re-align the frame. */ | |
3467 | if (gdbarch_frame_align_p (current_gdbarch)) | |
3468 | *sp = gdbarch_frame_align (current_gdbarch, *sp); | |
3469 | VALUE_ADDRESS (val) = *sp; | |
3470 | *sp += len; | |
3471 | if (gdbarch_frame_align_p (current_gdbarch)) | |
3472 | *sp = gdbarch_frame_align (current_gdbarch, *sp); | |
3473 | } | |
14f9c5c9 | 3474 | |
c3e5cd34 PH |
3475 | write_memory (VALUE_ADDRESS (val), VALUE_CONTENTS_RAW (val), len); |
3476 | } | |
14f9c5c9 AS |
3477 | |
3478 | return val; | |
3479 | } | |
3480 | ||
3481 | /* Return the value ACTUAL, converted to be an appropriate value for a | |
3482 | formal of type FORMAL_TYPE. Use *SP as a stack pointer for | |
3483 | allocating any necessary descriptors (fat pointers), or copies of | |
4c4b4cd2 | 3484 | values not residing in memory, updating it as needed. */ |
14f9c5c9 | 3485 | |
d2e4a39e AS |
3486 | static struct value * |
3487 | convert_actual (struct value *actual, struct type *formal_type0, | |
4c4b4cd2 | 3488 | CORE_ADDR *sp) |
14f9c5c9 | 3489 | { |
61ee279c PH |
3490 | struct type *actual_type = ada_check_typedef (VALUE_TYPE (actual)); |
3491 | struct type *formal_type = ada_check_typedef (formal_type0); | |
d2e4a39e AS |
3492 | struct type *formal_target = |
3493 | TYPE_CODE (formal_type) == TYPE_CODE_PTR | |
61ee279c | 3494 | ? ada_check_typedef (TYPE_TARGET_TYPE (formal_type)) : formal_type; |
d2e4a39e AS |
3495 | struct type *actual_target = |
3496 | TYPE_CODE (actual_type) == TYPE_CODE_PTR | |
61ee279c | 3497 | ? ada_check_typedef (TYPE_TARGET_TYPE (actual_type)) : actual_type; |
14f9c5c9 | 3498 | |
4c4b4cd2 | 3499 | if (ada_is_array_descriptor_type (formal_target) |
14f9c5c9 AS |
3500 | && TYPE_CODE (actual_target) == TYPE_CODE_ARRAY) |
3501 | return make_array_descriptor (formal_type, actual, sp); | |
3502 | else if (TYPE_CODE (formal_type) == TYPE_CODE_PTR) | |
3503 | { | |
3504 | if (TYPE_CODE (formal_target) == TYPE_CODE_ARRAY | |
4c4b4cd2 PH |
3505 | && ada_is_array_descriptor_type (actual_target)) |
3506 | return desc_data (actual); | |
14f9c5c9 | 3507 | else if (TYPE_CODE (actual_type) != TYPE_CODE_PTR) |
4c4b4cd2 PH |
3508 | { |
3509 | if (VALUE_LVAL (actual) != lval_memory) | |
3510 | { | |
3511 | struct value *val; | |
61ee279c | 3512 | actual_type = ada_check_typedef (VALUE_TYPE (actual)); |
4c4b4cd2 PH |
3513 | val = allocate_value (actual_type); |
3514 | memcpy ((char *) VALUE_CONTENTS_RAW (val), | |
3515 | (char *) VALUE_CONTENTS (actual), | |
3516 | TYPE_LENGTH (actual_type)); | |
3517 | actual = ensure_lval (val, sp); | |
3518 | } | |
3519 | return value_addr (actual); | |
3520 | } | |
14f9c5c9 AS |
3521 | } |
3522 | else if (TYPE_CODE (actual_type) == TYPE_CODE_PTR) | |
3523 | return ada_value_ind (actual); | |
3524 | ||
3525 | return actual; | |
3526 | } | |
3527 | ||
3528 | ||
4c4b4cd2 PH |
3529 | /* Push a descriptor of type TYPE for array value ARR on the stack at |
3530 | *SP, updating *SP to reflect the new descriptor. Return either | |
14f9c5c9 | 3531 | an lvalue representing the new descriptor, or (if TYPE is a pointer- |
4c4b4cd2 PH |
3532 | to-descriptor type rather than a descriptor type), a struct value * |
3533 | representing a pointer to this descriptor. */ | |
14f9c5c9 | 3534 | |
d2e4a39e AS |
3535 | static struct value * |
3536 | make_array_descriptor (struct type *type, struct value *arr, CORE_ADDR *sp) | |
14f9c5c9 | 3537 | { |
d2e4a39e AS |
3538 | struct type *bounds_type = desc_bounds_type (type); |
3539 | struct type *desc_type = desc_base_type (type); | |
3540 | struct value *descriptor = allocate_value (desc_type); | |
3541 | struct value *bounds = allocate_value (bounds_type); | |
14f9c5c9 | 3542 | int i; |
d2e4a39e | 3543 | |
61ee279c | 3544 | for (i = ada_array_arity (ada_check_typedef (VALUE_TYPE (arr))); i > 0; i -= 1) |
14f9c5c9 AS |
3545 | { |
3546 | modify_general_field (VALUE_CONTENTS (bounds), | |
4c4b4cd2 PH |
3547 | value_as_long (ada_array_bound (arr, i, 0)), |
3548 | desc_bound_bitpos (bounds_type, i, 0), | |
3549 | desc_bound_bitsize (bounds_type, i, 0)); | |
14f9c5c9 | 3550 | modify_general_field (VALUE_CONTENTS (bounds), |
4c4b4cd2 PH |
3551 | value_as_long (ada_array_bound (arr, i, 1)), |
3552 | desc_bound_bitpos (bounds_type, i, 1), | |
3553 | desc_bound_bitsize (bounds_type, i, 1)); | |
14f9c5c9 | 3554 | } |
d2e4a39e | 3555 | |
4c4b4cd2 | 3556 | bounds = ensure_lval (bounds, sp); |
d2e4a39e | 3557 | |
14f9c5c9 | 3558 | modify_general_field (VALUE_CONTENTS (descriptor), |
76a01679 JB |
3559 | VALUE_ADDRESS (ensure_lval (arr, sp)), |
3560 | fat_pntr_data_bitpos (desc_type), | |
3561 | fat_pntr_data_bitsize (desc_type)); | |
4c4b4cd2 | 3562 | |
14f9c5c9 | 3563 | modify_general_field (VALUE_CONTENTS (descriptor), |
4c4b4cd2 PH |
3564 | VALUE_ADDRESS (bounds), |
3565 | fat_pntr_bounds_bitpos (desc_type), | |
3566 | fat_pntr_bounds_bitsize (desc_type)); | |
14f9c5c9 | 3567 | |
4c4b4cd2 | 3568 | descriptor = ensure_lval (descriptor, sp); |
14f9c5c9 AS |
3569 | |
3570 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
3571 | return value_addr (descriptor); | |
3572 | else | |
3573 | return descriptor; | |
3574 | } | |
3575 | ||
3576 | ||
4c4b4cd2 | 3577 | /* Assuming a dummy frame has been established on the target, perform any |
14f9c5c9 | 3578 | conversions needed for calling function FUNC on the NARGS actual |
4c4b4cd2 | 3579 | parameters in ARGS, other than standard C conversions. Does |
14f9c5c9 | 3580 | nothing if FUNC does not have Ada-style prototype data, or if NARGS |
4c4b4cd2 | 3581 | does not match the number of arguments expected. Use *SP as a |
14f9c5c9 | 3582 | stack pointer for additional data that must be pushed, updating its |
4c4b4cd2 | 3583 | value as needed. */ |
14f9c5c9 AS |
3584 | |
3585 | void | |
d2e4a39e | 3586 | ada_convert_actuals (struct value *func, int nargs, struct value *args[], |
4c4b4cd2 | 3587 | CORE_ADDR *sp) |
14f9c5c9 AS |
3588 | { |
3589 | int i; | |
3590 | ||
d2e4a39e | 3591 | if (TYPE_NFIELDS (VALUE_TYPE (func)) == 0 |
14f9c5c9 AS |
3592 | || nargs != TYPE_NFIELDS (VALUE_TYPE (func))) |
3593 | return; | |
3594 | ||
3595 | for (i = 0; i < nargs; i += 1) | |
d2e4a39e AS |
3596 | args[i] = |
3597 | convert_actual (args[i], TYPE_FIELD_TYPE (VALUE_TYPE (func), i), sp); | |
14f9c5c9 | 3598 | } |
14f9c5c9 | 3599 | \f |
963a6417 PH |
3600 | /* Dummy definitions for an experimental caching module that is not |
3601 | * used in the public sources. */ | |
96d887e8 | 3602 | |
96d887e8 PH |
3603 | static int |
3604 | lookup_cached_symbol (const char *name, domain_enum namespace, | |
76a01679 JB |
3605 | struct symbol **sym, struct block **block, |
3606 | struct symtab **symtab) | |
96d887e8 PH |
3607 | { |
3608 | return 0; | |
3609 | } | |
3610 | ||
3611 | static void | |
3612 | cache_symbol (const char *name, domain_enum namespace, struct symbol *sym, | |
76a01679 | 3613 | struct block *block, struct symtab *symtab) |
96d887e8 PH |
3614 | { |
3615 | } | |
4c4b4cd2 PH |
3616 | \f |
3617 | /* Symbol Lookup */ | |
3618 | ||
3619 | /* Return the result of a standard (literal, C-like) lookup of NAME in | |
3620 | given DOMAIN, visible from lexical block BLOCK. */ | |
3621 | ||
3622 | static struct symbol * | |
3623 | standard_lookup (const char *name, const struct block *block, | |
3624 | domain_enum domain) | |
3625 | { | |
3626 | struct symbol *sym; | |
3627 | struct symtab *symtab; | |
3628 | ||
3629 | if (lookup_cached_symbol (name, domain, &sym, NULL, NULL)) | |
3630 | return sym; | |
76a01679 JB |
3631 | sym = |
3632 | lookup_symbol_in_language (name, block, domain, language_c, 0, &symtab); | |
4c4b4cd2 PH |
3633 | cache_symbol (name, domain, sym, block_found, symtab); |
3634 | return sym; | |
3635 | } | |
3636 | ||
3637 | ||
3638 | /* Non-zero iff there is at least one non-function/non-enumeral symbol | |
3639 | in the symbol fields of SYMS[0..N-1]. We treat enumerals as functions, | |
3640 | since they contend in overloading in the same way. */ | |
3641 | static int | |
3642 | is_nonfunction (struct ada_symbol_info syms[], int n) | |
3643 | { | |
3644 | int i; | |
3645 | ||
3646 | for (i = 0; i < n; i += 1) | |
3647 | if (TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) != TYPE_CODE_FUNC | |
3648 | && (TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) != TYPE_CODE_ENUM | |
3649 | || SYMBOL_CLASS (syms[i].sym) != LOC_CONST)) | |
14f9c5c9 AS |
3650 | return 1; |
3651 | ||
3652 | return 0; | |
3653 | } | |
3654 | ||
3655 | /* If true (non-zero), then TYPE0 and TYPE1 represent equivalent | |
4c4b4cd2 | 3656 | struct types. Otherwise, they may not. */ |
14f9c5c9 AS |
3657 | |
3658 | static int | |
d2e4a39e | 3659 | equiv_types (struct type *type0, struct type *type1) |
14f9c5c9 | 3660 | { |
d2e4a39e | 3661 | if (type0 == type1) |
14f9c5c9 | 3662 | return 1; |
d2e4a39e | 3663 | if (type0 == NULL || type1 == NULL |
14f9c5c9 AS |
3664 | || TYPE_CODE (type0) != TYPE_CODE (type1)) |
3665 | return 0; | |
d2e4a39e | 3666 | if ((TYPE_CODE (type0) == TYPE_CODE_STRUCT |
14f9c5c9 AS |
3667 | || TYPE_CODE (type0) == TYPE_CODE_ENUM) |
3668 | && ada_type_name (type0) != NULL && ada_type_name (type1) != NULL | |
4c4b4cd2 | 3669 | && strcmp (ada_type_name (type0), ada_type_name (type1)) == 0) |
14f9c5c9 | 3670 | return 1; |
d2e4a39e | 3671 | |
14f9c5c9 AS |
3672 | return 0; |
3673 | } | |
3674 | ||
3675 | /* True iff SYM0 represents the same entity as SYM1, or one that is | |
4c4b4cd2 | 3676 | no more defined than that of SYM1. */ |
14f9c5c9 AS |
3677 | |
3678 | static int | |
d2e4a39e | 3679 | lesseq_defined_than (struct symbol *sym0, struct symbol *sym1) |
14f9c5c9 AS |
3680 | { |
3681 | if (sym0 == sym1) | |
3682 | return 1; | |
176620f1 | 3683 | if (SYMBOL_DOMAIN (sym0) != SYMBOL_DOMAIN (sym1) |
14f9c5c9 AS |
3684 | || SYMBOL_CLASS (sym0) != SYMBOL_CLASS (sym1)) |
3685 | return 0; | |
3686 | ||
d2e4a39e | 3687 | switch (SYMBOL_CLASS (sym0)) |
14f9c5c9 AS |
3688 | { |
3689 | case LOC_UNDEF: | |
3690 | return 1; | |
3691 | case LOC_TYPEDEF: | |
3692 | { | |
4c4b4cd2 PH |
3693 | struct type *type0 = SYMBOL_TYPE (sym0); |
3694 | struct type *type1 = SYMBOL_TYPE (sym1); | |
3695 | char *name0 = SYMBOL_LINKAGE_NAME (sym0); | |
3696 | char *name1 = SYMBOL_LINKAGE_NAME (sym1); | |
3697 | int len0 = strlen (name0); | |
3698 | return | |
3699 | TYPE_CODE (type0) == TYPE_CODE (type1) | |
3700 | && (equiv_types (type0, type1) | |
3701 | || (len0 < strlen (name1) && strncmp (name0, name1, len0) == 0 | |
3702 | && strncmp (name1 + len0, "___XV", 5) == 0)); | |
14f9c5c9 AS |
3703 | } |
3704 | case LOC_CONST: | |
3705 | return SYMBOL_VALUE (sym0) == SYMBOL_VALUE (sym1) | |
4c4b4cd2 | 3706 | && equiv_types (SYMBOL_TYPE (sym0), SYMBOL_TYPE (sym1)); |
d2e4a39e AS |
3707 | default: |
3708 | return 0; | |
14f9c5c9 AS |
3709 | } |
3710 | } | |
3711 | ||
4c4b4cd2 PH |
3712 | /* Append (SYM,BLOCK,SYMTAB) to the end of the array of struct ada_symbol_info |
3713 | records in OBSTACKP. Do nothing if SYM is a duplicate. */ | |
14f9c5c9 AS |
3714 | |
3715 | static void | |
76a01679 JB |
3716 | add_defn_to_vec (struct obstack *obstackp, |
3717 | struct symbol *sym, | |
3718 | struct block *block, struct symtab *symtab) | |
14f9c5c9 AS |
3719 | { |
3720 | int i; | |
3721 | size_t tmp; | |
4c4b4cd2 | 3722 | struct ada_symbol_info *prevDefns = defns_collected (obstackp, 0); |
14f9c5c9 | 3723 | |
d2e4a39e | 3724 | if (SYMBOL_TYPE (sym) != NULL) |
61ee279c | 3725 | SYMBOL_TYPE (sym) = ada_check_typedef (SYMBOL_TYPE (sym)); |
4c4b4cd2 PH |
3726 | for (i = num_defns_collected (obstackp) - 1; i >= 0; i -= 1) |
3727 | { | |
3728 | if (lesseq_defined_than (sym, prevDefns[i].sym)) | |
3729 | return; | |
3730 | else if (lesseq_defined_than (prevDefns[i].sym, sym)) | |
3731 | { | |
3732 | prevDefns[i].sym = sym; | |
3733 | prevDefns[i].block = block; | |
76a01679 | 3734 | prevDefns[i].symtab = symtab; |
4c4b4cd2 | 3735 | return; |
76a01679 | 3736 | } |
4c4b4cd2 PH |
3737 | } |
3738 | ||
3739 | { | |
3740 | struct ada_symbol_info info; | |
3741 | ||
3742 | info.sym = sym; | |
3743 | info.block = block; | |
3744 | info.symtab = symtab; | |
3745 | obstack_grow (obstackp, &info, sizeof (struct ada_symbol_info)); | |
3746 | } | |
3747 | } | |
3748 | ||
3749 | /* Number of ada_symbol_info structures currently collected in | |
3750 | current vector in *OBSTACKP. */ | |
3751 | ||
76a01679 JB |
3752 | static int |
3753 | num_defns_collected (struct obstack *obstackp) | |
4c4b4cd2 PH |
3754 | { |
3755 | return obstack_object_size (obstackp) / sizeof (struct ada_symbol_info); | |
3756 | } | |
3757 | ||
3758 | /* Vector of ada_symbol_info structures currently collected in current | |
3759 | vector in *OBSTACKP. If FINISH, close off the vector and return | |
3760 | its final address. */ | |
3761 | ||
76a01679 | 3762 | static struct ada_symbol_info * |
4c4b4cd2 PH |
3763 | defns_collected (struct obstack *obstackp, int finish) |
3764 | { | |
3765 | if (finish) | |
3766 | return obstack_finish (obstackp); | |
3767 | else | |
3768 | return (struct ada_symbol_info *) obstack_base (obstackp); | |
3769 | } | |
3770 | ||
96d887e8 PH |
3771 | /* Look, in partial_symtab PST, for symbol NAME in given namespace. |
3772 | Check the global symbols if GLOBAL, the static symbols if not. | |
3773 | Do wild-card match if WILD. */ | |
4c4b4cd2 | 3774 | |
96d887e8 PH |
3775 | static struct partial_symbol * |
3776 | ada_lookup_partial_symbol (struct partial_symtab *pst, const char *name, | |
3777 | int global, domain_enum namespace, int wild) | |
4c4b4cd2 | 3778 | { |
96d887e8 PH |
3779 | struct partial_symbol **start; |
3780 | int name_len = strlen (name); | |
3781 | int length = (global ? pst->n_global_syms : pst->n_static_syms); | |
3782 | int i; | |
4c4b4cd2 | 3783 | |
96d887e8 | 3784 | if (length == 0) |
4c4b4cd2 | 3785 | { |
96d887e8 | 3786 | return (NULL); |
4c4b4cd2 PH |
3787 | } |
3788 | ||
96d887e8 PH |
3789 | start = (global ? |
3790 | pst->objfile->global_psymbols.list + pst->globals_offset : | |
3791 | pst->objfile->static_psymbols.list + pst->statics_offset); | |
4c4b4cd2 | 3792 | |
96d887e8 | 3793 | if (wild) |
4c4b4cd2 | 3794 | { |
96d887e8 PH |
3795 | for (i = 0; i < length; i += 1) |
3796 | { | |
3797 | struct partial_symbol *psym = start[i]; | |
4c4b4cd2 | 3798 | |
1265e4aa JB |
3799 | if (SYMBOL_DOMAIN (psym) == namespace |
3800 | && wild_match (name, name_len, SYMBOL_LINKAGE_NAME (psym))) | |
96d887e8 PH |
3801 | return psym; |
3802 | } | |
3803 | return NULL; | |
4c4b4cd2 | 3804 | } |
96d887e8 PH |
3805 | else |
3806 | { | |
3807 | if (global) | |
3808 | { | |
3809 | int U; | |
3810 | i = 0; | |
3811 | U = length - 1; | |
3812 | while (U - i > 4) | |
3813 | { | |
3814 | int M = (U + i) >> 1; | |
3815 | struct partial_symbol *psym = start[M]; | |
3816 | if (SYMBOL_LINKAGE_NAME (psym)[0] < name[0]) | |
3817 | i = M + 1; | |
3818 | else if (SYMBOL_LINKAGE_NAME (psym)[0] > name[0]) | |
3819 | U = M - 1; | |
3820 | else if (strcmp (SYMBOL_LINKAGE_NAME (psym), name) < 0) | |
3821 | i = M + 1; | |
3822 | else | |
3823 | U = M; | |
3824 | } | |
3825 | } | |
3826 | else | |
3827 | i = 0; | |
4c4b4cd2 | 3828 | |
96d887e8 PH |
3829 | while (i < length) |
3830 | { | |
3831 | struct partial_symbol *psym = start[i]; | |
4c4b4cd2 | 3832 | |
96d887e8 PH |
3833 | if (SYMBOL_DOMAIN (psym) == namespace) |
3834 | { | |
3835 | int cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym), name_len); | |
4c4b4cd2 | 3836 | |
96d887e8 PH |
3837 | if (cmp < 0) |
3838 | { | |
3839 | if (global) | |
3840 | break; | |
3841 | } | |
3842 | else if (cmp == 0 | |
3843 | && is_name_suffix (SYMBOL_LINKAGE_NAME (psym) | |
76a01679 | 3844 | + name_len)) |
96d887e8 PH |
3845 | return psym; |
3846 | } | |
3847 | i += 1; | |
3848 | } | |
4c4b4cd2 | 3849 | |
96d887e8 PH |
3850 | if (global) |
3851 | { | |
3852 | int U; | |
3853 | i = 0; | |
3854 | U = length - 1; | |
3855 | while (U - i > 4) | |
3856 | { | |
3857 | int M = (U + i) >> 1; | |
3858 | struct partial_symbol *psym = start[M]; | |
3859 | if (SYMBOL_LINKAGE_NAME (psym)[0] < '_') | |
3860 | i = M + 1; | |
3861 | else if (SYMBOL_LINKAGE_NAME (psym)[0] > '_') | |
3862 | U = M - 1; | |
3863 | else if (strcmp (SYMBOL_LINKAGE_NAME (psym), "_ada_") < 0) | |
3864 | i = M + 1; | |
3865 | else | |
3866 | U = M; | |
3867 | } | |
3868 | } | |
3869 | else | |
3870 | i = 0; | |
4c4b4cd2 | 3871 | |
96d887e8 PH |
3872 | while (i < length) |
3873 | { | |
3874 | struct partial_symbol *psym = start[i]; | |
4c4b4cd2 | 3875 | |
96d887e8 PH |
3876 | if (SYMBOL_DOMAIN (psym) == namespace) |
3877 | { | |
3878 | int cmp; | |
4c4b4cd2 | 3879 | |
96d887e8 PH |
3880 | cmp = (int) '_' - (int) SYMBOL_LINKAGE_NAME (psym)[0]; |
3881 | if (cmp == 0) | |
3882 | { | |
3883 | cmp = strncmp ("_ada_", SYMBOL_LINKAGE_NAME (psym), 5); | |
3884 | if (cmp == 0) | |
3885 | cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym) + 5, | |
76a01679 | 3886 | name_len); |
96d887e8 | 3887 | } |
4c4b4cd2 | 3888 | |
96d887e8 PH |
3889 | if (cmp < 0) |
3890 | { | |
3891 | if (global) | |
3892 | break; | |
3893 | } | |
3894 | else if (cmp == 0 | |
3895 | && is_name_suffix (SYMBOL_LINKAGE_NAME (psym) | |
76a01679 | 3896 | + name_len + 5)) |
96d887e8 PH |
3897 | return psym; |
3898 | } | |
3899 | i += 1; | |
3900 | } | |
3901 | } | |
3902 | return NULL; | |
4c4b4cd2 PH |
3903 | } |
3904 | ||
96d887e8 | 3905 | /* Find a symbol table containing symbol SYM or NULL if none. */ |
4c4b4cd2 | 3906 | |
96d887e8 PH |
3907 | static struct symtab * |
3908 | symtab_for_sym (struct symbol *sym) | |
4c4b4cd2 | 3909 | { |
96d887e8 PH |
3910 | struct symtab *s; |
3911 | struct objfile *objfile; | |
3912 | struct block *b; | |
3913 | struct symbol *tmp_sym; | |
3914 | struct dict_iterator iter; | |
3915 | int j; | |
4c4b4cd2 | 3916 | |
96d887e8 PH |
3917 | ALL_SYMTABS (objfile, s) |
3918 | { | |
3919 | switch (SYMBOL_CLASS (sym)) | |
3920 | { | |
3921 | case LOC_CONST: | |
3922 | case LOC_STATIC: | |
3923 | case LOC_TYPEDEF: | |
3924 | case LOC_REGISTER: | |
3925 | case LOC_LABEL: | |
3926 | case LOC_BLOCK: | |
3927 | case LOC_CONST_BYTES: | |
76a01679 JB |
3928 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); |
3929 | ALL_BLOCK_SYMBOLS (b, iter, tmp_sym) if (sym == tmp_sym) | |
3930 | return s; | |
3931 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
3932 | ALL_BLOCK_SYMBOLS (b, iter, tmp_sym) if (sym == tmp_sym) | |
3933 | return s; | |
96d887e8 PH |
3934 | break; |
3935 | default: | |
3936 | break; | |
3937 | } | |
3938 | switch (SYMBOL_CLASS (sym)) | |
3939 | { | |
3940 | case LOC_REGISTER: | |
3941 | case LOC_ARG: | |
3942 | case LOC_REF_ARG: | |
3943 | case LOC_REGPARM: | |
3944 | case LOC_REGPARM_ADDR: | |
3945 | case LOC_LOCAL: | |
3946 | case LOC_TYPEDEF: | |
3947 | case LOC_LOCAL_ARG: | |
3948 | case LOC_BASEREG: | |
3949 | case LOC_BASEREG_ARG: | |
3950 | case LOC_COMPUTED: | |
3951 | case LOC_COMPUTED_ARG: | |
76a01679 JB |
3952 | for (j = FIRST_LOCAL_BLOCK; |
3953 | j < BLOCKVECTOR_NBLOCKS (BLOCKVECTOR (s)); j += 1) | |
3954 | { | |
3955 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), j); | |
3956 | ALL_BLOCK_SYMBOLS (b, iter, tmp_sym) if (sym == tmp_sym) | |
3957 | return s; | |
3958 | } | |
3959 | break; | |
96d887e8 PH |
3960 | default: |
3961 | break; | |
3962 | } | |
3963 | } | |
3964 | return NULL; | |
4c4b4cd2 PH |
3965 | } |
3966 | ||
96d887e8 PH |
3967 | /* Return a minimal symbol matching NAME according to Ada decoding |
3968 | rules. Returns NULL if there is no such minimal symbol. Names | |
3969 | prefixed with "standard__" are handled specially: "standard__" is | |
3970 | first stripped off, and only static and global symbols are searched. */ | |
4c4b4cd2 | 3971 | |
96d887e8 PH |
3972 | struct minimal_symbol * |
3973 | ada_lookup_simple_minsym (const char *name) | |
4c4b4cd2 | 3974 | { |
4c4b4cd2 | 3975 | struct objfile *objfile; |
96d887e8 PH |
3976 | struct minimal_symbol *msymbol; |
3977 | int wild_match; | |
4c4b4cd2 | 3978 | |
96d887e8 | 3979 | if (strncmp (name, "standard__", sizeof ("standard__") - 1) == 0) |
4c4b4cd2 | 3980 | { |
96d887e8 | 3981 | name += sizeof ("standard__") - 1; |
4c4b4cd2 | 3982 | wild_match = 0; |
4c4b4cd2 PH |
3983 | } |
3984 | else | |
96d887e8 | 3985 | wild_match = (strstr (name, "__") == NULL); |
4c4b4cd2 | 3986 | |
96d887e8 PH |
3987 | ALL_MSYMBOLS (objfile, msymbol) |
3988 | { | |
3989 | if (ada_match_name (SYMBOL_LINKAGE_NAME (msymbol), name, wild_match) | |
3990 | && MSYMBOL_TYPE (msymbol) != mst_solib_trampoline) | |
3991 | return msymbol; | |
3992 | } | |
4c4b4cd2 | 3993 | |
96d887e8 PH |
3994 | return NULL; |
3995 | } | |
4c4b4cd2 | 3996 | |
96d887e8 PH |
3997 | /* For all subprograms that statically enclose the subprogram of the |
3998 | selected frame, add symbols matching identifier NAME in DOMAIN | |
3999 | and their blocks to the list of data in OBSTACKP, as for | |
4000 | ada_add_block_symbols (q.v.). If WILD, treat as NAME with a | |
4001 | wildcard prefix. */ | |
4c4b4cd2 | 4002 | |
96d887e8 PH |
4003 | static void |
4004 | add_symbols_from_enclosing_procs (struct obstack *obstackp, | |
76a01679 | 4005 | const char *name, domain_enum namespace, |
96d887e8 PH |
4006 | int wild_match) |
4007 | { | |
96d887e8 | 4008 | } |
14f9c5c9 | 4009 | |
96d887e8 | 4010 | /* FIXME: The next two routines belong in symtab.c */ |
14f9c5c9 | 4011 | |
76a01679 JB |
4012 | static void |
4013 | restore_language (void *lang) | |
96d887e8 PH |
4014 | { |
4015 | set_language ((enum language) lang); | |
4016 | } | |
4c4b4cd2 | 4017 | |
96d887e8 PH |
4018 | /* As for lookup_symbol, but performed as if the current language |
4019 | were LANG. */ | |
4c4b4cd2 | 4020 | |
96d887e8 PH |
4021 | struct symbol * |
4022 | lookup_symbol_in_language (const char *name, const struct block *block, | |
76a01679 JB |
4023 | domain_enum domain, enum language lang, |
4024 | int *is_a_field_of_this, struct symtab **symtab) | |
96d887e8 | 4025 | { |
76a01679 JB |
4026 | struct cleanup *old_chain |
4027 | = make_cleanup (restore_language, (void *) current_language->la_language); | |
96d887e8 PH |
4028 | struct symbol *result; |
4029 | set_language (lang); | |
4030 | result = lookup_symbol (name, block, domain, is_a_field_of_this, symtab); | |
4031 | do_cleanups (old_chain); | |
4032 | return result; | |
4033 | } | |
14f9c5c9 | 4034 | |
96d887e8 PH |
4035 | /* True if TYPE is definitely an artificial type supplied to a symbol |
4036 | for which no debugging information was given in the symbol file. */ | |
14f9c5c9 | 4037 | |
96d887e8 PH |
4038 | static int |
4039 | is_nondebugging_type (struct type *type) | |
4040 | { | |
4041 | char *name = ada_type_name (type); | |
4042 | return (name != NULL && strcmp (name, "<variable, no debug info>") == 0); | |
4043 | } | |
4c4b4cd2 | 4044 | |
96d887e8 PH |
4045 | /* Remove any non-debugging symbols in SYMS[0 .. NSYMS-1] that definitely |
4046 | duplicate other symbols in the list (The only case I know of where | |
4047 | this happens is when object files containing stabs-in-ecoff are | |
4048 | linked with files containing ordinary ecoff debugging symbols (or no | |
4049 | debugging symbols)). Modifies SYMS to squeeze out deleted entries. | |
4050 | Returns the number of items in the modified list. */ | |
4c4b4cd2 | 4051 | |
96d887e8 PH |
4052 | static int |
4053 | remove_extra_symbols (struct ada_symbol_info *syms, int nsyms) | |
4054 | { | |
4055 | int i, j; | |
4c4b4cd2 | 4056 | |
96d887e8 PH |
4057 | i = 0; |
4058 | while (i < nsyms) | |
4059 | { | |
4060 | if (SYMBOL_LINKAGE_NAME (syms[i].sym) != NULL | |
4061 | && SYMBOL_CLASS (syms[i].sym) == LOC_STATIC | |
4062 | && is_nondebugging_type (SYMBOL_TYPE (syms[i].sym))) | |
4063 | { | |
4064 | for (j = 0; j < nsyms; j += 1) | |
4065 | { | |
4066 | if (i != j | |
4067 | && SYMBOL_LINKAGE_NAME (syms[j].sym) != NULL | |
4068 | && strcmp (SYMBOL_LINKAGE_NAME (syms[i].sym), | |
76a01679 | 4069 | SYMBOL_LINKAGE_NAME (syms[j].sym)) == 0 |
96d887e8 PH |
4070 | && SYMBOL_CLASS (syms[i].sym) == SYMBOL_CLASS (syms[j].sym) |
4071 | && SYMBOL_VALUE_ADDRESS (syms[i].sym) | |
4072 | == SYMBOL_VALUE_ADDRESS (syms[j].sym)) | |
4c4b4cd2 | 4073 | { |
96d887e8 PH |
4074 | int k; |
4075 | for (k = i + 1; k < nsyms; k += 1) | |
76a01679 | 4076 | syms[k - 1] = syms[k]; |
96d887e8 PH |
4077 | nsyms -= 1; |
4078 | goto NextSymbol; | |
4c4b4cd2 | 4079 | } |
4c4b4cd2 | 4080 | } |
4c4b4cd2 | 4081 | } |
96d887e8 PH |
4082 | i += 1; |
4083 | NextSymbol: | |
4084 | ; | |
14f9c5c9 | 4085 | } |
96d887e8 | 4086 | return nsyms; |
14f9c5c9 AS |
4087 | } |
4088 | ||
96d887e8 PH |
4089 | /* Given a type that corresponds to a renaming entity, use the type name |
4090 | to extract the scope (package name or function name, fully qualified, | |
4091 | and following the GNAT encoding convention) where this renaming has been | |
4092 | defined. The string returned needs to be deallocated after use. */ | |
4c4b4cd2 | 4093 | |
96d887e8 PH |
4094 | static char * |
4095 | xget_renaming_scope (struct type *renaming_type) | |
14f9c5c9 | 4096 | { |
96d887e8 PH |
4097 | /* The renaming types adhere to the following convention: |
4098 | <scope>__<rename>___<XR extension>. | |
4099 | So, to extract the scope, we search for the "___XR" extension, | |
4100 | and then backtrack until we find the first "__". */ | |
76a01679 | 4101 | |
96d887e8 PH |
4102 | const char *name = type_name_no_tag (renaming_type); |
4103 | char *suffix = strstr (name, "___XR"); | |
4104 | char *last; | |
4105 | int scope_len; | |
4106 | char *scope; | |
14f9c5c9 | 4107 | |
96d887e8 PH |
4108 | /* Now, backtrack a bit until we find the first "__". Start looking |
4109 | at suffix - 3, as the <rename> part is at least one character long. */ | |
14f9c5c9 | 4110 | |
96d887e8 PH |
4111 | for (last = suffix - 3; last > name; last--) |
4112 | if (last[0] == '_' && last[1] == '_') | |
4113 | break; | |
76a01679 | 4114 | |
96d887e8 | 4115 | /* Make a copy of scope and return it. */ |
14f9c5c9 | 4116 | |
96d887e8 PH |
4117 | scope_len = last - name; |
4118 | scope = (char *) xmalloc ((scope_len + 1) * sizeof (char)); | |
14f9c5c9 | 4119 | |
96d887e8 PH |
4120 | strncpy (scope, name, scope_len); |
4121 | scope[scope_len] = '\0'; | |
4c4b4cd2 | 4122 | |
96d887e8 | 4123 | return scope; |
4c4b4cd2 PH |
4124 | } |
4125 | ||
96d887e8 | 4126 | /* Return nonzero if NAME corresponds to a package name. */ |
4c4b4cd2 | 4127 | |
96d887e8 PH |
4128 | static int |
4129 | is_package_name (const char *name) | |
4c4b4cd2 | 4130 | { |
96d887e8 PH |
4131 | /* Here, We take advantage of the fact that no symbols are generated |
4132 | for packages, while symbols are generated for each function. | |
4133 | So the condition for NAME represent a package becomes equivalent | |
4134 | to NAME not existing in our list of symbols. There is only one | |
4135 | small complication with library-level functions (see below). */ | |
4c4b4cd2 | 4136 | |
96d887e8 | 4137 | char *fun_name; |
76a01679 | 4138 | |
96d887e8 PH |
4139 | /* If it is a function that has not been defined at library level, |
4140 | then we should be able to look it up in the symbols. */ | |
4141 | if (standard_lookup (name, NULL, VAR_DOMAIN) != NULL) | |
4142 | return 0; | |
14f9c5c9 | 4143 | |
96d887e8 PH |
4144 | /* Library-level function names start with "_ada_". See if function |
4145 | "_ada_" followed by NAME can be found. */ | |
14f9c5c9 | 4146 | |
96d887e8 PH |
4147 | /* Do a quick check that NAME does not contain "__", since library-level |
4148 | functions names can not contain "__" in them. */ | |
4149 | if (strstr (name, "__") != NULL) | |
4150 | return 0; | |
4c4b4cd2 | 4151 | |
b435e160 | 4152 | fun_name = xstrprintf ("_ada_%s", name); |
14f9c5c9 | 4153 | |
96d887e8 PH |
4154 | return (standard_lookup (fun_name, NULL, VAR_DOMAIN) == NULL); |
4155 | } | |
14f9c5c9 | 4156 | |
96d887e8 PH |
4157 | /* Return nonzero if SYM corresponds to a renaming entity that is |
4158 | visible from FUNCTION_NAME. */ | |
14f9c5c9 | 4159 | |
96d887e8 PH |
4160 | static int |
4161 | renaming_is_visible (const struct symbol *sym, char *function_name) | |
4162 | { | |
4163 | char *scope = xget_renaming_scope (SYMBOL_TYPE (sym)); | |
d2e4a39e | 4164 | |
96d887e8 | 4165 | make_cleanup (xfree, scope); |
14f9c5c9 | 4166 | |
96d887e8 PH |
4167 | /* If the rename has been defined in a package, then it is visible. */ |
4168 | if (is_package_name (scope)) | |
4169 | return 1; | |
14f9c5c9 | 4170 | |
96d887e8 PH |
4171 | /* Check that the rename is in the current function scope by checking |
4172 | that its name starts with SCOPE. */ | |
76a01679 | 4173 | |
96d887e8 PH |
4174 | /* If the function name starts with "_ada_", it means that it is |
4175 | a library-level function. Strip this prefix before doing the | |
4176 | comparison, as the encoding for the renaming does not contain | |
4177 | this prefix. */ | |
4178 | if (strncmp (function_name, "_ada_", 5) == 0) | |
4179 | function_name += 5; | |
f26caa11 | 4180 | |
96d887e8 | 4181 | return (strncmp (function_name, scope, strlen (scope)) == 0); |
f26caa11 PH |
4182 | } |
4183 | ||
96d887e8 PH |
4184 | /* Iterates over the SYMS list and remove any entry that corresponds to |
4185 | a renaming entity that is not visible from the function associated | |
4186 | with CURRENT_BLOCK. | |
4187 | ||
4188 | Rationale: | |
4189 | GNAT emits a type following a specified encoding for each renaming | |
4190 | entity. Unfortunately, STABS currently does not support the definition | |
4191 | of types that are local to a given lexical block, so all renamings types | |
4192 | are emitted at library level. As a consequence, if an application | |
4193 | contains two renaming entities using the same name, and a user tries to | |
4194 | print the value of one of these entities, the result of the ada symbol | |
4195 | lookup will also contain the wrong renaming type. | |
f26caa11 | 4196 | |
96d887e8 PH |
4197 | This function partially covers for this limitation by attempting to |
4198 | remove from the SYMS list renaming symbols that should be visible | |
4199 | from CURRENT_BLOCK. However, there does not seem be a 100% reliable | |
4200 | method with the current information available. The implementation | |
4201 | below has a couple of limitations (FIXME: brobecker-2003-05-12): | |
4202 | ||
4203 | - When the user tries to print a rename in a function while there | |
4204 | is another rename entity defined in a package: Normally, the | |
4205 | rename in the function has precedence over the rename in the | |
4206 | package, so the latter should be removed from the list. This is | |
4207 | currently not the case. | |
4208 | ||
4209 | - This function will incorrectly remove valid renames if | |
4210 | the CURRENT_BLOCK corresponds to a function which symbol name | |
4211 | has been changed by an "Export" pragma. As a consequence, | |
4212 | the user will be unable to print such rename entities. */ | |
4c4b4cd2 | 4213 | |
14f9c5c9 | 4214 | static int |
96d887e8 | 4215 | remove_out_of_scope_renamings (struct ada_symbol_info *syms, |
76a01679 | 4216 | int nsyms, struct block *current_block) |
4c4b4cd2 PH |
4217 | { |
4218 | struct symbol *current_function; | |
4219 | char *current_function_name; | |
4220 | int i; | |
4221 | ||
4222 | /* Extract the function name associated to CURRENT_BLOCK. | |
4223 | Abort if unable to do so. */ | |
76a01679 | 4224 | |
4c4b4cd2 PH |
4225 | if (current_block == NULL) |
4226 | return nsyms; | |
76a01679 | 4227 | |
4c4b4cd2 PH |
4228 | current_function = block_function (current_block); |
4229 | if (current_function == NULL) | |
4230 | return nsyms; | |
4231 | ||
4232 | current_function_name = SYMBOL_LINKAGE_NAME (current_function); | |
4233 | if (current_function_name == NULL) | |
4234 | return nsyms; | |
4235 | ||
4236 | /* Check each of the symbols, and remove it from the list if it is | |
4237 | a type corresponding to a renaming that is out of the scope of | |
4238 | the current block. */ | |
4239 | ||
4240 | i = 0; | |
4241 | while (i < nsyms) | |
4242 | { | |
4243 | if (ada_is_object_renaming (syms[i].sym) | |
4244 | && !renaming_is_visible (syms[i].sym, current_function_name)) | |
4245 | { | |
4246 | int j; | |
4247 | for (j = i + 1; j < nsyms; j++) | |
76a01679 | 4248 | syms[j - 1] = syms[j]; |
4c4b4cd2 PH |
4249 | nsyms -= 1; |
4250 | } | |
4251 | else | |
4252 | i += 1; | |
4253 | } | |
4254 | ||
4255 | return nsyms; | |
4256 | } | |
4257 | ||
4258 | /* Find symbols in DOMAIN matching NAME0, in BLOCK0 and enclosing | |
4259 | scope and in global scopes, returning the number of matches. Sets | |
4260 | *RESULTS to point to a vector of (SYM,BLOCK,SYMTAB) triples, | |
4261 | indicating the symbols found and the blocks and symbol tables (if | |
4262 | any) in which they were found. This vector are transient---good only to | |
4263 | the next call of ada_lookup_symbol_list. Any non-function/non-enumeral | |
4264 | symbol match within the nest of blocks whose innermost member is BLOCK0, | |
4265 | is the one match returned (no other matches in that or | |
4266 | enclosing blocks is returned). If there are any matches in or | |
4267 | surrounding BLOCK0, then these alone are returned. Otherwise, the | |
4268 | search extends to global and file-scope (static) symbol tables. | |
4269 | Names prefixed with "standard__" are handled specially: "standard__" | |
4270 | is first stripped off, and only static and global symbols are searched. */ | |
14f9c5c9 AS |
4271 | |
4272 | int | |
4c4b4cd2 | 4273 | ada_lookup_symbol_list (const char *name0, const struct block *block0, |
76a01679 JB |
4274 | domain_enum namespace, |
4275 | struct ada_symbol_info **results) | |
14f9c5c9 AS |
4276 | { |
4277 | struct symbol *sym; | |
4278 | struct symtab *s; | |
4279 | struct partial_symtab *ps; | |
4280 | struct blockvector *bv; | |
4281 | struct objfile *objfile; | |
14f9c5c9 | 4282 | struct block *block; |
4c4b4cd2 | 4283 | const char *name; |
14f9c5c9 | 4284 | struct minimal_symbol *msymbol; |
4c4b4cd2 | 4285 | int wild_match; |
14f9c5c9 | 4286 | int cacheIfUnique; |
4c4b4cd2 PH |
4287 | int block_depth; |
4288 | int ndefns; | |
14f9c5c9 | 4289 | |
4c4b4cd2 PH |
4290 | obstack_free (&symbol_list_obstack, NULL); |
4291 | obstack_init (&symbol_list_obstack); | |
14f9c5c9 | 4292 | |
14f9c5c9 AS |
4293 | cacheIfUnique = 0; |
4294 | ||
4295 | /* Search specified block and its superiors. */ | |
4296 | ||
4c4b4cd2 PH |
4297 | wild_match = (strstr (name0, "__") == NULL); |
4298 | name = name0; | |
76a01679 JB |
4299 | block = (struct block *) block0; /* FIXME: No cast ought to be |
4300 | needed, but adding const will | |
4301 | have a cascade effect. */ | |
4c4b4cd2 PH |
4302 | if (strncmp (name0, "standard__", sizeof ("standard__") - 1) == 0) |
4303 | { | |
4304 | wild_match = 0; | |
4305 | block = NULL; | |
4306 | name = name0 + sizeof ("standard__") - 1; | |
4307 | } | |
4308 | ||
4309 | block_depth = 0; | |
14f9c5c9 AS |
4310 | while (block != NULL) |
4311 | { | |
4c4b4cd2 | 4312 | block_depth += 1; |
76a01679 JB |
4313 | ada_add_block_symbols (&symbol_list_obstack, block, name, |
4314 | namespace, NULL, NULL, wild_match); | |
14f9c5c9 | 4315 | |
4c4b4cd2 PH |
4316 | /* If we found a non-function match, assume that's the one. */ |
4317 | if (is_nonfunction (defns_collected (&symbol_list_obstack, 0), | |
76a01679 | 4318 | num_defns_collected (&symbol_list_obstack))) |
4c4b4cd2 | 4319 | goto done; |
14f9c5c9 AS |
4320 | |
4321 | block = BLOCK_SUPERBLOCK (block); | |
4322 | } | |
4323 | ||
4c4b4cd2 PH |
4324 | /* If no luck so far, try to find NAME as a local symbol in some lexically |
4325 | enclosing subprogram. */ | |
4326 | if (num_defns_collected (&symbol_list_obstack) == 0 && block_depth > 2) | |
4327 | add_symbols_from_enclosing_procs (&symbol_list_obstack, | |
76a01679 | 4328 | name, namespace, wild_match); |
4c4b4cd2 PH |
4329 | |
4330 | /* If we found ANY matches among non-global symbols, we're done. */ | |
14f9c5c9 | 4331 | |
4c4b4cd2 | 4332 | if (num_defns_collected (&symbol_list_obstack) > 0) |
14f9c5c9 | 4333 | goto done; |
d2e4a39e | 4334 | |
14f9c5c9 | 4335 | cacheIfUnique = 1; |
4c4b4cd2 PH |
4336 | if (lookup_cached_symbol (name0, namespace, &sym, &block, &s)) |
4337 | { | |
4338 | if (sym != NULL) | |
4339 | add_defn_to_vec (&symbol_list_obstack, sym, block, s); | |
4340 | goto done; | |
4341 | } | |
14f9c5c9 AS |
4342 | |
4343 | /* Now add symbols from all global blocks: symbol tables, minimal symbol | |
4c4b4cd2 | 4344 | tables, and psymtab's. */ |
14f9c5c9 AS |
4345 | |
4346 | ALL_SYMTABS (objfile, s) | |
d2e4a39e AS |
4347 | { |
4348 | QUIT; | |
4349 | if (!s->primary) | |
4350 | continue; | |
4351 | bv = BLOCKVECTOR (s); | |
4352 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
76a01679 JB |
4353 | ada_add_block_symbols (&symbol_list_obstack, block, name, namespace, |
4354 | objfile, s, wild_match); | |
d2e4a39e | 4355 | } |
14f9c5c9 | 4356 | |
4c4b4cd2 | 4357 | if (namespace == VAR_DOMAIN) |
14f9c5c9 AS |
4358 | { |
4359 | ALL_MSYMBOLS (objfile, msymbol) | |
d2e4a39e | 4360 | { |
4c4b4cd2 PH |
4361 | if (ada_match_name (SYMBOL_LINKAGE_NAME (msymbol), name, wild_match)) |
4362 | { | |
4363 | switch (MSYMBOL_TYPE (msymbol)) | |
4364 | { | |
4365 | case mst_solib_trampoline: | |
4366 | break; | |
4367 | default: | |
4368 | s = find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)); | |
4369 | if (s != NULL) | |
4370 | { | |
4371 | int ndefns0 = num_defns_collected (&symbol_list_obstack); | |
4372 | QUIT; | |
4373 | bv = BLOCKVECTOR (s); | |
4374 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
4375 | ada_add_block_symbols (&symbol_list_obstack, block, | |
4376 | SYMBOL_LINKAGE_NAME (msymbol), | |
4377 | namespace, objfile, s, wild_match); | |
76a01679 | 4378 | |
4c4b4cd2 PH |
4379 | if (num_defns_collected (&symbol_list_obstack) == ndefns0) |
4380 | { | |
4381 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
4382 | ada_add_block_symbols (&symbol_list_obstack, block, | |
4383 | SYMBOL_LINKAGE_NAME (msymbol), | |
4384 | namespace, objfile, s, | |
4385 | wild_match); | |
4386 | } | |
4387 | } | |
4388 | } | |
4389 | } | |
d2e4a39e | 4390 | } |
14f9c5c9 | 4391 | } |
d2e4a39e | 4392 | |
14f9c5c9 | 4393 | ALL_PSYMTABS (objfile, ps) |
d2e4a39e AS |
4394 | { |
4395 | QUIT; | |
4396 | if (!ps->readin | |
4c4b4cd2 | 4397 | && ada_lookup_partial_symbol (ps, name, 1, namespace, wild_match)) |
d2e4a39e | 4398 | { |
4c4b4cd2 PH |
4399 | s = PSYMTAB_TO_SYMTAB (ps); |
4400 | if (!s->primary) | |
4401 | continue; | |
4402 | bv = BLOCKVECTOR (s); | |
4403 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
4404 | ada_add_block_symbols (&symbol_list_obstack, block, name, | |
76a01679 | 4405 | namespace, objfile, s, wild_match); |
d2e4a39e AS |
4406 | } |
4407 | } | |
4408 | ||
4c4b4cd2 | 4409 | /* Now add symbols from all per-file blocks if we've gotten no hits |
14f9c5c9 | 4410 | (Not strictly correct, but perhaps better than an error). |
4c4b4cd2 | 4411 | Do the symtabs first, then check the psymtabs. */ |
d2e4a39e | 4412 | |
4c4b4cd2 | 4413 | if (num_defns_collected (&symbol_list_obstack) == 0) |
14f9c5c9 AS |
4414 | { |
4415 | ||
4416 | ALL_SYMTABS (objfile, s) | |
d2e4a39e | 4417 | { |
4c4b4cd2 PH |
4418 | QUIT; |
4419 | if (!s->primary) | |
4420 | continue; | |
4421 | bv = BLOCKVECTOR (s); | |
4422 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
76a01679 JB |
4423 | ada_add_block_symbols (&symbol_list_obstack, block, name, namespace, |
4424 | objfile, s, wild_match); | |
d2e4a39e AS |
4425 | } |
4426 | ||
14f9c5c9 | 4427 | ALL_PSYMTABS (objfile, ps) |
d2e4a39e | 4428 | { |
4c4b4cd2 PH |
4429 | QUIT; |
4430 | if (!ps->readin | |
4431 | && ada_lookup_partial_symbol (ps, name, 0, namespace, wild_match)) | |
4432 | { | |
4433 | s = PSYMTAB_TO_SYMTAB (ps); | |
4434 | bv = BLOCKVECTOR (s); | |
4435 | if (!s->primary) | |
4436 | continue; | |
4437 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
76a01679 JB |
4438 | ada_add_block_symbols (&symbol_list_obstack, block, name, |
4439 | namespace, objfile, s, wild_match); | |
4c4b4cd2 | 4440 | } |
d2e4a39e AS |
4441 | } |
4442 | } | |
14f9c5c9 | 4443 | |
4c4b4cd2 PH |
4444 | done: |
4445 | ndefns = num_defns_collected (&symbol_list_obstack); | |
4446 | *results = defns_collected (&symbol_list_obstack, 1); | |
4447 | ||
4448 | ndefns = remove_extra_symbols (*results, ndefns); | |
4449 | ||
d2e4a39e | 4450 | if (ndefns == 0) |
4c4b4cd2 | 4451 | cache_symbol (name0, namespace, NULL, NULL, NULL); |
14f9c5c9 | 4452 | |
4c4b4cd2 | 4453 | if (ndefns == 1 && cacheIfUnique) |
76a01679 JB |
4454 | cache_symbol (name0, namespace, (*results)[0].sym, (*results)[0].block, |
4455 | (*results)[0].symtab); | |
14f9c5c9 | 4456 | |
4c4b4cd2 PH |
4457 | ndefns = remove_out_of_scope_renamings (*results, ndefns, |
4458 | (struct block *) block0); | |
14f9c5c9 | 4459 | |
14f9c5c9 AS |
4460 | return ndefns; |
4461 | } | |
4462 | ||
4c4b4cd2 PH |
4463 | /* Return a symbol in DOMAIN matching NAME, in BLOCK0 and enclosing |
4464 | scope and in global scopes, or NULL if none. NAME is folded and | |
4465 | encoded first. Otherwise, the result is as for ada_lookup_symbol_list, | |
4466 | but is disambiguated by user query if needed. *IS_A_FIELD_OF_THIS is | |
4467 | set to 0 and *SYMTAB is set to the symbol table in which the symbol | |
4468 | was found (in both cases, these assignments occur only if the | |
4469 | pointers are non-null). */ | |
d2e4a39e | 4470 | struct symbol * |
4c4b4cd2 PH |
4471 | ada_lookup_symbol (const char *name, const struct block *block0, |
4472 | domain_enum namespace, int *is_a_field_of_this, | |
76a01679 | 4473 | struct symtab **symtab) |
14f9c5c9 | 4474 | { |
4c4b4cd2 | 4475 | struct ada_symbol_info *candidates; |
14f9c5c9 AS |
4476 | int n_candidates; |
4477 | ||
4c4b4cd2 PH |
4478 | n_candidates = ada_lookup_symbol_list (ada_encode (ada_fold_name (name)), |
4479 | block0, namespace, &candidates); | |
14f9c5c9 AS |
4480 | |
4481 | if (n_candidates == 0) | |
4482 | return NULL; | |
4c4b4cd2 PH |
4483 | |
4484 | if (is_a_field_of_this != NULL) | |
4485 | *is_a_field_of_this = 0; | |
4486 | ||
76a01679 | 4487 | if (symtab != NULL) |
4c4b4cd2 PH |
4488 | { |
4489 | *symtab = candidates[0].symtab; | |
76a01679 JB |
4490 | if (*symtab == NULL && candidates[0].block != NULL) |
4491 | { | |
4492 | struct objfile *objfile; | |
4493 | struct symtab *s; | |
4494 | struct block *b; | |
4495 | struct blockvector *bv; | |
4496 | ||
4497 | /* Search the list of symtabs for one which contains the | |
4498 | address of the start of this block. */ | |
4499 | ALL_SYMTABS (objfile, s) | |
4500 | { | |
4501 | bv = BLOCKVECTOR (s); | |
4502 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
4503 | if (BLOCK_START (b) <= BLOCK_START (candidates[0].block) | |
4504 | && BLOCK_END (b) > BLOCK_START (candidates[0].block)) | |
4505 | { | |
4506 | *symtab = s; | |
4507 | return fixup_symbol_section (candidates[0].sym, objfile); | |
4508 | } | |
4509 | return fixup_symbol_section (candidates[0].sym, NULL); | |
4510 | } | |
4511 | } | |
4512 | } | |
4c4b4cd2 PH |
4513 | return candidates[0].sym; |
4514 | } | |
14f9c5c9 | 4515 | |
4c4b4cd2 PH |
4516 | static struct symbol * |
4517 | ada_lookup_symbol_nonlocal (const char *name, | |
76a01679 JB |
4518 | const char *linkage_name, |
4519 | const struct block *block, | |
4520 | const domain_enum domain, struct symtab **symtab) | |
4c4b4cd2 PH |
4521 | { |
4522 | if (linkage_name == NULL) | |
4523 | linkage_name = name; | |
76a01679 JB |
4524 | return ada_lookup_symbol (linkage_name, block_static_block (block), domain, |
4525 | NULL, symtab); | |
14f9c5c9 AS |
4526 | } |
4527 | ||
4528 | ||
4c4b4cd2 PH |
4529 | /* True iff STR is a possible encoded suffix of a normal Ada name |
4530 | that is to be ignored for matching purposes. Suffixes of parallel | |
4531 | names (e.g., XVE) are not included here. Currently, the possible suffixes | |
4532 | are given by either of the regular expression: | |
4533 | ||
19c1ef65 PH |
4534 | (__[0-9]+)?\.[0-9]+ [nested subprogram suffix, on platforms such |
4535 | as GNU/Linux] | |
4c4b4cd2 | 4536 | ___[0-9]+ [nested subprogram suffix, on platforms such as HP/UX] |
61ee279c | 4537 | (X[nb]*)?((\$|__)[0-9](_?[0-9]+)|___(JM|LJM|X([FDBUP].*|R[^T]?)))?$ |
14f9c5c9 | 4538 | */ |
4c4b4cd2 | 4539 | |
14f9c5c9 | 4540 | static int |
d2e4a39e | 4541 | is_name_suffix (const char *str) |
14f9c5c9 AS |
4542 | { |
4543 | int k; | |
4c4b4cd2 PH |
4544 | const char *matching; |
4545 | const int len = strlen (str); | |
4546 | ||
4547 | /* (__[0-9]+)?\.[0-9]+ */ | |
4548 | matching = str; | |
4549 | if (len > 3 && str[0] == '_' && str[1] == '_' && isdigit (str[2])) | |
4550 | { | |
4551 | matching += 3; | |
4552 | while (isdigit (matching[0])) | |
4553 | matching += 1; | |
4554 | if (matching[0] == '\0') | |
4555 | return 1; | |
4556 | } | |
4557 | ||
4558 | if (matching[0] == '.') | |
4559 | { | |
4560 | matching += 1; | |
4561 | while (isdigit (matching[0])) | |
4562 | matching += 1; | |
4563 | if (matching[0] == '\0') | |
4564 | return 1; | |
4565 | } | |
4566 | ||
4567 | /* ___[0-9]+ */ | |
4568 | if (len > 3 && str[0] == '_' && str[1] == '_' && str[2] == '_') | |
4569 | { | |
4570 | matching = str + 3; | |
4571 | while (isdigit (matching[0])) | |
4572 | matching += 1; | |
4573 | if (matching[0] == '\0') | |
4574 | return 1; | |
4575 | } | |
4576 | ||
4577 | /* ??? We should not modify STR directly, as we are doing below. This | |
4578 | is fine in this case, but may become problematic later if we find | |
4579 | that this alternative did not work, and want to try matching | |
4580 | another one from the begining of STR. Since we modified it, we | |
4581 | won't be able to find the begining of the string anymore! */ | |
14f9c5c9 AS |
4582 | if (str[0] == 'X') |
4583 | { | |
4584 | str += 1; | |
d2e4a39e | 4585 | while (str[0] != '_' && str[0] != '\0') |
4c4b4cd2 PH |
4586 | { |
4587 | if (str[0] != 'n' && str[0] != 'b') | |
4588 | return 0; | |
4589 | str += 1; | |
4590 | } | |
14f9c5c9 AS |
4591 | } |
4592 | if (str[0] == '\000') | |
4593 | return 1; | |
d2e4a39e | 4594 | if (str[0] == '_') |
14f9c5c9 AS |
4595 | { |
4596 | if (str[1] != '_' || str[2] == '\000') | |
4c4b4cd2 | 4597 | return 0; |
d2e4a39e | 4598 | if (str[2] == '_') |
4c4b4cd2 | 4599 | { |
61ee279c PH |
4600 | if (strcmp (str + 3, "JM") == 0) |
4601 | return 1; | |
4602 | /* FIXME: brobecker/2004-09-30: GNAT will soon stop using | |
4603 | the LJM suffix in favor of the JM one. But we will | |
4604 | still accept LJM as a valid suffix for a reasonable | |
4605 | amount of time, just to allow ourselves to debug programs | |
4606 | compiled using an older version of GNAT. */ | |
4c4b4cd2 PH |
4607 | if (strcmp (str + 3, "LJM") == 0) |
4608 | return 1; | |
4609 | if (str[3] != 'X') | |
4610 | return 0; | |
1265e4aa JB |
4611 | if (str[4] == 'F' || str[4] == 'D' || str[4] == 'B' |
4612 | || str[4] == 'U' || str[4] == 'P') | |
4c4b4cd2 PH |
4613 | return 1; |
4614 | if (str[4] == 'R' && str[5] != 'T') | |
4615 | return 1; | |
4616 | return 0; | |
4617 | } | |
4618 | if (!isdigit (str[2])) | |
4619 | return 0; | |
4620 | for (k = 3; str[k] != '\0'; k += 1) | |
4621 | if (!isdigit (str[k]) && str[k] != '_') | |
4622 | return 0; | |
14f9c5c9 AS |
4623 | return 1; |
4624 | } | |
4c4b4cd2 | 4625 | if (str[0] == '$' && isdigit (str[1])) |
14f9c5c9 | 4626 | { |
4c4b4cd2 PH |
4627 | for (k = 2; str[k] != '\0'; k += 1) |
4628 | if (!isdigit (str[k]) && str[k] != '_') | |
4629 | return 0; | |
14f9c5c9 AS |
4630 | return 1; |
4631 | } | |
4632 | return 0; | |
4633 | } | |
d2e4a39e | 4634 | |
4c4b4cd2 PH |
4635 | /* Return nonzero if the given string starts with a dot ('.') |
4636 | followed by zero or more digits. | |
4637 | ||
4638 | Note: brobecker/2003-11-10: A forward declaration has not been | |
4639 | added at the begining of this file yet, because this function | |
4640 | is only used to work around a problem found during wild matching | |
4641 | when trying to match minimal symbol names against symbol names | |
4642 | obtained from dwarf-2 data. This function is therefore currently | |
4643 | only used in wild_match() and is likely to be deleted when the | |
4644 | problem in dwarf-2 is fixed. */ | |
4645 | ||
4646 | static int | |
4647 | is_dot_digits_suffix (const char *str) | |
4648 | { | |
4649 | if (str[0] != '.') | |
4650 | return 0; | |
4651 | ||
4652 | str++; | |
4653 | while (isdigit (str[0])) | |
4654 | str++; | |
4655 | return (str[0] == '\0'); | |
4656 | } | |
4657 | ||
4658 | /* True if NAME represents a name of the form A1.A2....An, n>=1 and | |
4659 | PATN[0..PATN_LEN-1] = Ak.Ak+1.....An for some k >= 1. Ignores | |
4660 | informational suffixes of NAME (i.e., for which is_name_suffix is | |
4661 | true). */ | |
4662 | ||
14f9c5c9 | 4663 | static int |
4c4b4cd2 | 4664 | wild_match (const char *patn0, int patn_len, const char *name0) |
14f9c5c9 AS |
4665 | { |
4666 | int name_len; | |
4c4b4cd2 PH |
4667 | char *name; |
4668 | char *patn; | |
4669 | ||
4670 | /* FIXME: brobecker/2003-11-10: For some reason, the symbol name | |
4671 | stored in the symbol table for nested function names is sometimes | |
4672 | different from the name of the associated entity stored in | |
4673 | the dwarf-2 data: This is the case for nested subprograms, where | |
4674 | the minimal symbol name contains a trailing ".[:digit:]+" suffix, | |
4675 | while the symbol name from the dwarf-2 data does not. | |
4676 | ||
4677 | Although the DWARF-2 standard documents that entity names stored | |
4678 | in the dwarf-2 data should be identical to the name as seen in | |
4679 | the source code, GNAT takes a different approach as we already use | |
4680 | a special encoding mechanism to convey the information so that | |
4681 | a C debugger can still use the information generated to debug | |
4682 | Ada programs. A corollary is that the symbol names in the dwarf-2 | |
4683 | data should match the names found in the symbol table. I therefore | |
4684 | consider this issue as a compiler defect. | |
76a01679 | 4685 | |
4c4b4cd2 PH |
4686 | Until the compiler is properly fixed, we work-around the problem |
4687 | by ignoring such suffixes during the match. We do so by making | |
4688 | a copy of PATN0 and NAME0, and then by stripping such a suffix | |
4689 | if present. We then perform the match on the resulting strings. */ | |
4690 | { | |
4691 | char *dot; | |
4692 | name_len = strlen (name0); | |
4693 | ||
4694 | name = (char *) alloca ((name_len + 1) * sizeof (char)); | |
4695 | strcpy (name, name0); | |
4696 | dot = strrchr (name, '.'); | |
4697 | if (dot != NULL && is_dot_digits_suffix (dot)) | |
4698 | *dot = '\0'; | |
4699 | ||
4700 | patn = (char *) alloca ((patn_len + 1) * sizeof (char)); | |
4701 | strncpy (patn, patn0, patn_len); | |
4702 | patn[patn_len] = '\0'; | |
4703 | dot = strrchr (patn, '.'); | |
4704 | if (dot != NULL && is_dot_digits_suffix (dot)) | |
4705 | { | |
4706 | *dot = '\0'; | |
4707 | patn_len = dot - patn; | |
4708 | } | |
4709 | } | |
4710 | ||
4711 | /* Now perform the wild match. */ | |
14f9c5c9 AS |
4712 | |
4713 | name_len = strlen (name); | |
4c4b4cd2 PH |
4714 | if (name_len >= patn_len + 5 && strncmp (name, "_ada_", 5) == 0 |
4715 | && strncmp (patn, name + 5, patn_len) == 0 | |
d2e4a39e | 4716 | && is_name_suffix (name + patn_len + 5)) |
14f9c5c9 AS |
4717 | return 1; |
4718 | ||
d2e4a39e | 4719 | while (name_len >= patn_len) |
14f9c5c9 | 4720 | { |
4c4b4cd2 PH |
4721 | if (strncmp (patn, name, patn_len) == 0 |
4722 | && is_name_suffix (name + patn_len)) | |
4723 | return 1; | |
4724 | do | |
4725 | { | |
4726 | name += 1; | |
4727 | name_len -= 1; | |
4728 | } | |
d2e4a39e | 4729 | while (name_len > 0 |
4c4b4cd2 | 4730 | && name[0] != '.' && (name[0] != '_' || name[1] != '_')); |
14f9c5c9 | 4731 | if (name_len <= 0) |
4c4b4cd2 | 4732 | return 0; |
14f9c5c9 | 4733 | if (name[0] == '_') |
4c4b4cd2 PH |
4734 | { |
4735 | if (!islower (name[2])) | |
4736 | return 0; | |
4737 | name += 2; | |
4738 | name_len -= 2; | |
4739 | } | |
14f9c5c9 | 4740 | else |
4c4b4cd2 PH |
4741 | { |
4742 | if (!islower (name[1])) | |
4743 | return 0; | |
4744 | name += 1; | |
4745 | name_len -= 1; | |
4746 | } | |
96d887e8 PH |
4747 | } |
4748 | ||
4749 | return 0; | |
4750 | } | |
4751 | ||
4752 | ||
4753 | /* Add symbols from BLOCK matching identifier NAME in DOMAIN to | |
4754 | vector *defn_symbols, updating the list of symbols in OBSTACKP | |
4755 | (if necessary). If WILD, treat as NAME with a wildcard prefix. | |
4756 | OBJFILE is the section containing BLOCK. | |
4757 | SYMTAB is recorded with each symbol added. */ | |
4758 | ||
4759 | static void | |
4760 | ada_add_block_symbols (struct obstack *obstackp, | |
76a01679 | 4761 | struct block *block, const char *name, |
96d887e8 PH |
4762 | domain_enum domain, struct objfile *objfile, |
4763 | struct symtab *symtab, int wild) | |
4764 | { | |
4765 | struct dict_iterator iter; | |
4766 | int name_len = strlen (name); | |
4767 | /* A matching argument symbol, if any. */ | |
4768 | struct symbol *arg_sym; | |
4769 | /* Set true when we find a matching non-argument symbol. */ | |
4770 | int found_sym; | |
4771 | struct symbol *sym; | |
4772 | ||
4773 | arg_sym = NULL; | |
4774 | found_sym = 0; | |
4775 | if (wild) | |
4776 | { | |
4777 | struct symbol *sym; | |
4778 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
76a01679 | 4779 | { |
1265e4aa JB |
4780 | if (SYMBOL_DOMAIN (sym) == domain |
4781 | && wild_match (name, name_len, SYMBOL_LINKAGE_NAME (sym))) | |
76a01679 JB |
4782 | { |
4783 | switch (SYMBOL_CLASS (sym)) | |
4784 | { | |
4785 | case LOC_ARG: | |
4786 | case LOC_LOCAL_ARG: | |
4787 | case LOC_REF_ARG: | |
4788 | case LOC_REGPARM: | |
4789 | case LOC_REGPARM_ADDR: | |
4790 | case LOC_BASEREG_ARG: | |
4791 | case LOC_COMPUTED_ARG: | |
4792 | arg_sym = sym; | |
4793 | break; | |
4794 | case LOC_UNRESOLVED: | |
4795 | continue; | |
4796 | default: | |
4797 | found_sym = 1; | |
4798 | add_defn_to_vec (obstackp, | |
4799 | fixup_symbol_section (sym, objfile), | |
4800 | block, symtab); | |
4801 | break; | |
4802 | } | |
4803 | } | |
4804 | } | |
96d887e8 PH |
4805 | } |
4806 | else | |
4807 | { | |
4808 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
76a01679 JB |
4809 | { |
4810 | if (SYMBOL_DOMAIN (sym) == domain) | |
4811 | { | |
4812 | int cmp = strncmp (name, SYMBOL_LINKAGE_NAME (sym), name_len); | |
4813 | if (cmp == 0 | |
4814 | && is_name_suffix (SYMBOL_LINKAGE_NAME (sym) + name_len)) | |
4815 | { | |
4816 | switch (SYMBOL_CLASS (sym)) | |
4817 | { | |
4818 | case LOC_ARG: | |
4819 | case LOC_LOCAL_ARG: | |
4820 | case LOC_REF_ARG: | |
4821 | case LOC_REGPARM: | |
4822 | case LOC_REGPARM_ADDR: | |
4823 | case LOC_BASEREG_ARG: | |
4824 | case LOC_COMPUTED_ARG: | |
4825 | arg_sym = sym; | |
4826 | break; | |
4827 | case LOC_UNRESOLVED: | |
4828 | break; | |
4829 | default: | |
4830 | found_sym = 1; | |
4831 | add_defn_to_vec (obstackp, | |
4832 | fixup_symbol_section (sym, objfile), | |
4833 | block, symtab); | |
4834 | break; | |
4835 | } | |
4836 | } | |
4837 | } | |
4838 | } | |
96d887e8 PH |
4839 | } |
4840 | ||
4841 | if (!found_sym && arg_sym != NULL) | |
4842 | { | |
76a01679 JB |
4843 | add_defn_to_vec (obstackp, |
4844 | fixup_symbol_section (arg_sym, objfile), | |
4845 | block, symtab); | |
96d887e8 PH |
4846 | } |
4847 | ||
4848 | if (!wild) | |
4849 | { | |
4850 | arg_sym = NULL; | |
4851 | found_sym = 0; | |
4852 | ||
4853 | ALL_BLOCK_SYMBOLS (block, iter, sym) | |
76a01679 JB |
4854 | { |
4855 | if (SYMBOL_DOMAIN (sym) == domain) | |
4856 | { | |
4857 | int cmp; | |
4858 | ||
4859 | cmp = (int) '_' - (int) SYMBOL_LINKAGE_NAME (sym)[0]; | |
4860 | if (cmp == 0) | |
4861 | { | |
4862 | cmp = strncmp ("_ada_", SYMBOL_LINKAGE_NAME (sym), 5); | |
4863 | if (cmp == 0) | |
4864 | cmp = strncmp (name, SYMBOL_LINKAGE_NAME (sym) + 5, | |
4865 | name_len); | |
4866 | } | |
4867 | ||
4868 | if (cmp == 0 | |
4869 | && is_name_suffix (SYMBOL_LINKAGE_NAME (sym) + name_len + 5)) | |
4870 | { | |
4871 | switch (SYMBOL_CLASS (sym)) | |
4872 | { | |
4873 | case LOC_ARG: | |
4874 | case LOC_LOCAL_ARG: | |
4875 | case LOC_REF_ARG: | |
4876 | case LOC_REGPARM: | |
4877 | case LOC_REGPARM_ADDR: | |
4878 | case LOC_BASEREG_ARG: | |
4879 | case LOC_COMPUTED_ARG: | |
4880 | arg_sym = sym; | |
4881 | break; | |
4882 | case LOC_UNRESOLVED: | |
4883 | break; | |
4884 | default: | |
4885 | found_sym = 1; | |
4886 | add_defn_to_vec (obstackp, | |
4887 | fixup_symbol_section (sym, objfile), | |
4888 | block, symtab); | |
4889 | break; | |
4890 | } | |
4891 | } | |
4892 | } | |
76a01679 | 4893 | } |
96d887e8 PH |
4894 | |
4895 | /* NOTE: This really shouldn't be needed for _ada_ symbols. | |
4896 | They aren't parameters, right? */ | |
4897 | if (!found_sym && arg_sym != NULL) | |
4898 | { | |
4899 | add_defn_to_vec (obstackp, | |
76a01679 JB |
4900 | fixup_symbol_section (arg_sym, objfile), |
4901 | block, symtab); | |
96d887e8 PH |
4902 | } |
4903 | } | |
4904 | } | |
4905 | \f | |
963a6417 | 4906 | /* Field Access */ |
96d887e8 | 4907 | |
963a6417 PH |
4908 | /* True if field number FIELD_NUM in struct or union type TYPE is supposed |
4909 | to be invisible to users. */ | |
96d887e8 | 4910 | |
963a6417 PH |
4911 | int |
4912 | ada_is_ignored_field (struct type *type, int field_num) | |
96d887e8 | 4913 | { |
963a6417 PH |
4914 | if (field_num < 0 || field_num > TYPE_NFIELDS (type)) |
4915 | return 1; | |
4916 | else | |
96d887e8 | 4917 | { |
963a6417 PH |
4918 | const char *name = TYPE_FIELD_NAME (type, field_num); |
4919 | return (name == NULL | |
4920 | || (name[0] == '_' && strncmp (name, "_parent", 7) != 0)); | |
96d887e8 | 4921 | } |
963a6417 | 4922 | } |
96d887e8 | 4923 | |
963a6417 PH |
4924 | /* True iff TYPE has a tag field. If REFOK, then TYPE may also be a |
4925 | pointer or reference type whose ultimate target has a tag field. */ | |
96d887e8 | 4926 | |
963a6417 PH |
4927 | int |
4928 | ada_is_tagged_type (struct type *type, int refok) | |
4929 | { | |
4930 | return (ada_lookup_struct_elt_type (type, "_tag", refok, 1, NULL) != NULL); | |
4931 | } | |
96d887e8 | 4932 | |
963a6417 | 4933 | /* True iff TYPE represents the type of X'Tag */ |
96d887e8 | 4934 | |
963a6417 PH |
4935 | int |
4936 | ada_is_tag_type (struct type *type) | |
4937 | { | |
4938 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_PTR) | |
4939 | return 0; | |
4940 | else | |
96d887e8 | 4941 | { |
963a6417 PH |
4942 | const char *name = ada_type_name (TYPE_TARGET_TYPE (type)); |
4943 | return (name != NULL | |
4944 | && strcmp (name, "ada__tags__dispatch_table") == 0); | |
96d887e8 | 4945 | } |
96d887e8 PH |
4946 | } |
4947 | ||
963a6417 | 4948 | /* The type of the tag on VAL. */ |
76a01679 | 4949 | |
963a6417 PH |
4950 | struct type * |
4951 | ada_tag_type (struct value *val) | |
96d887e8 | 4952 | { |
963a6417 PH |
4953 | return ada_lookup_struct_elt_type (VALUE_TYPE (val), "_tag", 1, 0, NULL); |
4954 | } | |
96d887e8 | 4955 | |
963a6417 | 4956 | /* The value of the tag on VAL. */ |
96d887e8 | 4957 | |
963a6417 PH |
4958 | struct value * |
4959 | ada_value_tag (struct value *val) | |
4960 | { | |
4961 | return ada_value_struct_elt (val, "_tag", "record"); | |
96d887e8 PH |
4962 | } |
4963 | ||
963a6417 PH |
4964 | /* The value of the tag on the object of type TYPE whose contents are |
4965 | saved at VALADDR, if it is non-null, or is at memory address | |
4966 | ADDRESS. */ | |
96d887e8 | 4967 | |
963a6417 PH |
4968 | static struct value * |
4969 | value_tag_from_contents_and_address (struct type *type, char *valaddr, | |
4970 | CORE_ADDR address) | |
96d887e8 | 4971 | { |
963a6417 PH |
4972 | int tag_byte_offset, dummy1, dummy2; |
4973 | struct type *tag_type; | |
4974 | if (find_struct_field ("_tag", type, 0, &tag_type, &tag_byte_offset, | |
4975 | &dummy1, &dummy2)) | |
96d887e8 | 4976 | { |
963a6417 PH |
4977 | char *valaddr1 = (valaddr == NULL) ? NULL : valaddr + tag_byte_offset; |
4978 | CORE_ADDR address1 = (address == 0) ? 0 : address + tag_byte_offset; | |
96d887e8 | 4979 | |
963a6417 | 4980 | return value_from_contents_and_address (tag_type, valaddr1, address1); |
96d887e8 | 4981 | } |
963a6417 PH |
4982 | return NULL; |
4983 | } | |
96d887e8 | 4984 | |
963a6417 PH |
4985 | static struct type * |
4986 | type_from_tag (struct value *tag) | |
4987 | { | |
4988 | const char *type_name = ada_tag_name (tag); | |
4989 | if (type_name != NULL) | |
4990 | return ada_find_any_type (ada_encode (type_name)); | |
4991 | return NULL; | |
4992 | } | |
96d887e8 | 4993 | |
963a6417 PH |
4994 | struct tag_args |
4995 | { | |
4996 | struct value *tag; | |
4997 | char *name; | |
4998 | }; | |
4c4b4cd2 PH |
4999 | |
5000 | /* Wrapper function used by ada_tag_name. Given a struct tag_args* | |
5001 | value ARGS, sets ARGS->name to the tag name of ARGS->tag. | |
5002 | The value stored in ARGS->name is valid until the next call to | |
5003 | ada_tag_name_1. */ | |
5004 | ||
5005 | static int | |
5006 | ada_tag_name_1 (void *args0) | |
5007 | { | |
5008 | struct tag_args *args = (struct tag_args *) args0; | |
5009 | static char name[1024]; | |
76a01679 | 5010 | char *p; |
4c4b4cd2 PH |
5011 | struct value *val; |
5012 | args->name = NULL; | |
5013 | val = ada_value_struct_elt (args->tag, "tsd", NULL); | |
5014 | if (val == NULL) | |
5015 | return 0; | |
5016 | val = ada_value_struct_elt (val, "expanded_name", NULL); | |
5017 | if (val == NULL) | |
5018 | return 0; | |
5019 | read_memory_string (value_as_address (val), name, sizeof (name) - 1); | |
5020 | for (p = name; *p != '\0'; p += 1) | |
5021 | if (isalpha (*p)) | |
5022 | *p = tolower (*p); | |
5023 | args->name = name; | |
5024 | return 0; | |
5025 | } | |
5026 | ||
5027 | /* The type name of the dynamic type denoted by the 'tag value TAG, as | |
5028 | * a C string. */ | |
5029 | ||
5030 | const char * | |
5031 | ada_tag_name (struct value *tag) | |
5032 | { | |
5033 | struct tag_args args; | |
76a01679 | 5034 | if (!ada_is_tag_type (VALUE_TYPE (tag))) |
4c4b4cd2 | 5035 | return NULL; |
76a01679 | 5036 | args.tag = tag; |
4c4b4cd2 PH |
5037 | args.name = NULL; |
5038 | catch_errors (ada_tag_name_1, &args, NULL, RETURN_MASK_ALL); | |
5039 | return args.name; | |
5040 | } | |
5041 | ||
5042 | /* The parent type of TYPE, or NULL if none. */ | |
14f9c5c9 | 5043 | |
d2e4a39e | 5044 | struct type * |
ebf56fd3 | 5045 | ada_parent_type (struct type *type) |
14f9c5c9 AS |
5046 | { |
5047 | int i; | |
5048 | ||
61ee279c | 5049 | type = ada_check_typedef (type); |
14f9c5c9 AS |
5050 | |
5051 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT) | |
5052 | return NULL; | |
5053 | ||
5054 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
5055 | if (ada_is_parent_field (type, i)) | |
61ee279c | 5056 | return ada_check_typedef (TYPE_FIELD_TYPE (type, i)); |
14f9c5c9 AS |
5057 | |
5058 | return NULL; | |
5059 | } | |
5060 | ||
4c4b4cd2 PH |
5061 | /* True iff field number FIELD_NUM of structure type TYPE contains the |
5062 | parent-type (inherited) fields of a derived type. Assumes TYPE is | |
5063 | a structure type with at least FIELD_NUM+1 fields. */ | |
14f9c5c9 AS |
5064 | |
5065 | int | |
ebf56fd3 | 5066 | ada_is_parent_field (struct type *type, int field_num) |
14f9c5c9 | 5067 | { |
61ee279c | 5068 | const char *name = TYPE_FIELD_NAME (ada_check_typedef (type), field_num); |
4c4b4cd2 PH |
5069 | return (name != NULL |
5070 | && (strncmp (name, "PARENT", 6) == 0 | |
5071 | || strncmp (name, "_parent", 7) == 0)); | |
14f9c5c9 AS |
5072 | } |
5073 | ||
4c4b4cd2 | 5074 | /* True iff field number FIELD_NUM of structure type TYPE is a |
14f9c5c9 | 5075 | transparent wrapper field (which should be silently traversed when doing |
4c4b4cd2 | 5076 | field selection and flattened when printing). Assumes TYPE is a |
14f9c5c9 | 5077 | structure type with at least FIELD_NUM+1 fields. Such fields are always |
4c4b4cd2 | 5078 | structures. */ |
14f9c5c9 AS |
5079 | |
5080 | int | |
ebf56fd3 | 5081 | ada_is_wrapper_field (struct type *type, int field_num) |
14f9c5c9 | 5082 | { |
d2e4a39e AS |
5083 | const char *name = TYPE_FIELD_NAME (type, field_num); |
5084 | return (name != NULL | |
4c4b4cd2 PH |
5085 | && (strncmp (name, "PARENT", 6) == 0 |
5086 | || strcmp (name, "REP") == 0 | |
5087 | || strncmp (name, "_parent", 7) == 0 | |
5088 | || name[0] == 'S' || name[0] == 'R' || name[0] == 'O')); | |
14f9c5c9 AS |
5089 | } |
5090 | ||
4c4b4cd2 PH |
5091 | /* True iff field number FIELD_NUM of structure or union type TYPE |
5092 | is a variant wrapper. Assumes TYPE is a structure type with at least | |
5093 | FIELD_NUM+1 fields. */ | |
14f9c5c9 AS |
5094 | |
5095 | int | |
ebf56fd3 | 5096 | ada_is_variant_part (struct type *type, int field_num) |
14f9c5c9 | 5097 | { |
d2e4a39e | 5098 | struct type *field_type = TYPE_FIELD_TYPE (type, field_num); |
14f9c5c9 | 5099 | return (TYPE_CODE (field_type) == TYPE_CODE_UNION |
4c4b4cd2 | 5100 | || (is_dynamic_field (type, field_num) |
c3e5cd34 PH |
5101 | && (TYPE_CODE (TYPE_TARGET_TYPE (field_type)) |
5102 | == TYPE_CODE_UNION))); | |
14f9c5c9 AS |
5103 | } |
5104 | ||
5105 | /* Assuming that VAR_TYPE is a variant wrapper (type of the variant part) | |
4c4b4cd2 | 5106 | whose discriminants are contained in the record type OUTER_TYPE, |
14f9c5c9 AS |
5107 | returns the type of the controlling discriminant for the variant. */ |
5108 | ||
d2e4a39e | 5109 | struct type * |
ebf56fd3 | 5110 | ada_variant_discrim_type (struct type *var_type, struct type *outer_type) |
14f9c5c9 | 5111 | { |
d2e4a39e | 5112 | char *name = ada_variant_discrim_name (var_type); |
76a01679 | 5113 | struct type *type = |
4c4b4cd2 | 5114 | ada_lookup_struct_elt_type (outer_type, name, 1, 1, NULL); |
14f9c5c9 AS |
5115 | if (type == NULL) |
5116 | return builtin_type_int; | |
5117 | else | |
5118 | return type; | |
5119 | } | |
5120 | ||
4c4b4cd2 | 5121 | /* Assuming that TYPE is the type of a variant wrapper, and FIELD_NUM is a |
14f9c5c9 | 5122 | valid field number within it, returns 1 iff field FIELD_NUM of TYPE |
4c4b4cd2 | 5123 | represents a 'when others' clause; otherwise 0. */ |
14f9c5c9 AS |
5124 | |
5125 | int | |
ebf56fd3 | 5126 | ada_is_others_clause (struct type *type, int field_num) |
14f9c5c9 | 5127 | { |
d2e4a39e | 5128 | const char *name = TYPE_FIELD_NAME (type, field_num); |
14f9c5c9 AS |
5129 | return (name != NULL && name[0] == 'O'); |
5130 | } | |
5131 | ||
5132 | /* Assuming that TYPE0 is the type of the variant part of a record, | |
4c4b4cd2 PH |
5133 | returns the name of the discriminant controlling the variant. |
5134 | The value is valid until the next call to ada_variant_discrim_name. */ | |
14f9c5c9 | 5135 | |
d2e4a39e | 5136 | char * |
ebf56fd3 | 5137 | ada_variant_discrim_name (struct type *type0) |
14f9c5c9 | 5138 | { |
d2e4a39e | 5139 | static char *result = NULL; |
14f9c5c9 | 5140 | static size_t result_len = 0; |
d2e4a39e AS |
5141 | struct type *type; |
5142 | const char *name; | |
5143 | const char *discrim_end; | |
5144 | const char *discrim_start; | |
14f9c5c9 AS |
5145 | |
5146 | if (TYPE_CODE (type0) == TYPE_CODE_PTR) | |
5147 | type = TYPE_TARGET_TYPE (type0); | |
5148 | else | |
5149 | type = type0; | |
5150 | ||
5151 | name = ada_type_name (type); | |
5152 | ||
5153 | if (name == NULL || name[0] == '\000') | |
5154 | return ""; | |
5155 | ||
5156 | for (discrim_end = name + strlen (name) - 6; discrim_end != name; | |
5157 | discrim_end -= 1) | |
5158 | { | |
4c4b4cd2 PH |
5159 | if (strncmp (discrim_end, "___XVN", 6) == 0) |
5160 | break; | |
14f9c5c9 AS |
5161 | } |
5162 | if (discrim_end == name) | |
5163 | return ""; | |
5164 | ||
d2e4a39e | 5165 | for (discrim_start = discrim_end; discrim_start != name + 3; |
14f9c5c9 AS |
5166 | discrim_start -= 1) |
5167 | { | |
d2e4a39e | 5168 | if (discrim_start == name + 1) |
4c4b4cd2 | 5169 | return ""; |
76a01679 | 5170 | if ((discrim_start > name + 3 |
4c4b4cd2 PH |
5171 | && strncmp (discrim_start - 3, "___", 3) == 0) |
5172 | || discrim_start[-1] == '.') | |
5173 | break; | |
14f9c5c9 AS |
5174 | } |
5175 | ||
5176 | GROW_VECT (result, result_len, discrim_end - discrim_start + 1); | |
5177 | strncpy (result, discrim_start, discrim_end - discrim_start); | |
d2e4a39e | 5178 | result[discrim_end - discrim_start] = '\0'; |
14f9c5c9 AS |
5179 | return result; |
5180 | } | |
5181 | ||
4c4b4cd2 PH |
5182 | /* Scan STR for a subtype-encoded number, beginning at position K. |
5183 | Put the position of the character just past the number scanned in | |
5184 | *NEW_K, if NEW_K!=NULL. Put the scanned number in *R, if R!=NULL. | |
5185 | Return 1 if there was a valid number at the given position, and 0 | |
5186 | otherwise. A "subtype-encoded" number consists of the absolute value | |
5187 | in decimal, followed by the letter 'm' to indicate a negative number. | |
5188 | Assumes 0m does not occur. */ | |
14f9c5c9 AS |
5189 | |
5190 | int | |
d2e4a39e | 5191 | ada_scan_number (const char str[], int k, LONGEST * R, int *new_k) |
14f9c5c9 AS |
5192 | { |
5193 | ULONGEST RU; | |
5194 | ||
d2e4a39e | 5195 | if (!isdigit (str[k])) |
14f9c5c9 AS |
5196 | return 0; |
5197 | ||
4c4b4cd2 | 5198 | /* Do it the hard way so as not to make any assumption about |
14f9c5c9 | 5199 | the relationship of unsigned long (%lu scan format code) and |
4c4b4cd2 | 5200 | LONGEST. */ |
14f9c5c9 AS |
5201 | RU = 0; |
5202 | while (isdigit (str[k])) | |
5203 | { | |
d2e4a39e | 5204 | RU = RU * 10 + (str[k] - '0'); |
14f9c5c9 AS |
5205 | k += 1; |
5206 | } | |
5207 | ||
d2e4a39e | 5208 | if (str[k] == 'm') |
14f9c5c9 AS |
5209 | { |
5210 | if (R != NULL) | |
4c4b4cd2 | 5211 | *R = (-(LONGEST) (RU - 1)) - 1; |
14f9c5c9 AS |
5212 | k += 1; |
5213 | } | |
5214 | else if (R != NULL) | |
5215 | *R = (LONGEST) RU; | |
5216 | ||
4c4b4cd2 | 5217 | /* NOTE on the above: Technically, C does not say what the results of |
14f9c5c9 AS |
5218 | - (LONGEST) RU or (LONGEST) -RU are for RU == largest positive |
5219 | number representable as a LONGEST (although either would probably work | |
5220 | in most implementations). When RU>0, the locution in the then branch | |
4c4b4cd2 | 5221 | above is always equivalent to the negative of RU. */ |
14f9c5c9 AS |
5222 | |
5223 | if (new_k != NULL) | |
5224 | *new_k = k; | |
5225 | return 1; | |
5226 | } | |
5227 | ||
4c4b4cd2 PH |
5228 | /* Assuming that TYPE is a variant part wrapper type (a VARIANTS field), |
5229 | and FIELD_NUM is a valid field number within it, returns 1 iff VAL is | |
5230 | in the range encoded by field FIELD_NUM of TYPE; otherwise 0. */ | |
14f9c5c9 | 5231 | |
d2e4a39e | 5232 | int |
ebf56fd3 | 5233 | ada_in_variant (LONGEST val, struct type *type, int field_num) |
14f9c5c9 | 5234 | { |
d2e4a39e | 5235 | const char *name = TYPE_FIELD_NAME (type, field_num); |
14f9c5c9 AS |
5236 | int p; |
5237 | ||
5238 | p = 0; | |
5239 | while (1) | |
5240 | { | |
d2e4a39e | 5241 | switch (name[p]) |
4c4b4cd2 PH |
5242 | { |
5243 | case '\0': | |
5244 | return 0; | |
5245 | case 'S': | |
5246 | { | |
5247 | LONGEST W; | |
5248 | if (!ada_scan_number (name, p + 1, &W, &p)) | |
5249 | return 0; | |
5250 | if (val == W) | |
5251 | return 1; | |
5252 | break; | |
5253 | } | |
5254 | case 'R': | |
5255 | { | |
5256 | LONGEST L, U; | |
5257 | if (!ada_scan_number (name, p + 1, &L, &p) | |
5258 | || name[p] != 'T' || !ada_scan_number (name, p + 1, &U, &p)) | |
5259 | return 0; | |
5260 | if (val >= L && val <= U) | |
5261 | return 1; | |
5262 | break; | |
5263 | } | |
5264 | case 'O': | |
5265 | return 1; | |
5266 | default: | |
5267 | return 0; | |
5268 | } | |
5269 | } | |
5270 | } | |
5271 | ||
5272 | /* FIXME: Lots of redundancy below. Try to consolidate. */ | |
5273 | ||
5274 | /* Given a value ARG1 (offset by OFFSET bytes) of a struct or union type | |
5275 | ARG_TYPE, extract and return the value of one of its (non-static) | |
5276 | fields. FIELDNO says which field. Differs from value_primitive_field | |
5277 | only in that it can handle packed values of arbitrary type. */ | |
14f9c5c9 | 5278 | |
4c4b4cd2 | 5279 | static struct value * |
d2e4a39e | 5280 | ada_value_primitive_field (struct value *arg1, int offset, int fieldno, |
4c4b4cd2 | 5281 | struct type *arg_type) |
14f9c5c9 | 5282 | { |
14f9c5c9 AS |
5283 | struct type *type; |
5284 | ||
61ee279c | 5285 | arg_type = ada_check_typedef (arg_type); |
14f9c5c9 AS |
5286 | type = TYPE_FIELD_TYPE (arg_type, fieldno); |
5287 | ||
4c4b4cd2 | 5288 | /* Handle packed fields. */ |
14f9c5c9 AS |
5289 | |
5290 | if (TYPE_FIELD_BITSIZE (arg_type, fieldno) != 0) | |
5291 | { | |
5292 | int bit_pos = TYPE_FIELD_BITPOS (arg_type, fieldno); | |
5293 | int bit_size = TYPE_FIELD_BITSIZE (arg_type, fieldno); | |
d2e4a39e | 5294 | |
14f9c5c9 | 5295 | return ada_value_primitive_packed_val (arg1, VALUE_CONTENTS (arg1), |
4c4b4cd2 PH |
5296 | offset + bit_pos / 8, |
5297 | bit_pos % 8, bit_size, type); | |
14f9c5c9 AS |
5298 | } |
5299 | else | |
5300 | return value_primitive_field (arg1, offset, fieldno, arg_type); | |
5301 | } | |
5302 | ||
4c4b4cd2 PH |
5303 | /* Find field with name NAME in object of type TYPE. If found, return 1 |
5304 | after setting *FIELD_TYPE_P to the field's type, *BYTE_OFFSET_P to | |
5305 | OFFSET + the byte offset of the field within an object of that type, | |
5306 | *BIT_OFFSET_P to the bit offset modulo byte size of the field, and | |
5307 | *BIT_SIZE_P to its size in bits if the field is packed, and 0 otherwise. | |
5308 | Looks inside wrappers for the field. Returns 0 if field not | |
5309 | found. */ | |
5310 | static int | |
76a01679 JB |
5311 | find_struct_field (char *name, struct type *type, int offset, |
5312 | struct type **field_type_p, | |
5313 | int *byte_offset_p, int *bit_offset_p, int *bit_size_p) | |
4c4b4cd2 PH |
5314 | { |
5315 | int i; | |
5316 | ||
61ee279c | 5317 | type = ada_check_typedef (type); |
4c4b4cd2 PH |
5318 | *field_type_p = NULL; |
5319 | *byte_offset_p = *bit_offset_p = *bit_size_p = 0; | |
76a01679 | 5320 | |
4c4b4cd2 PH |
5321 | for (i = TYPE_NFIELDS (type) - 1; i >= 0; i -= 1) |
5322 | { | |
5323 | int bit_pos = TYPE_FIELD_BITPOS (type, i); | |
5324 | int fld_offset = offset + bit_pos / 8; | |
5325 | char *t_field_name = TYPE_FIELD_NAME (type, i); | |
76a01679 | 5326 | |
4c4b4cd2 PH |
5327 | if (t_field_name == NULL) |
5328 | continue; | |
5329 | ||
5330 | else if (field_name_match (t_field_name, name)) | |
76a01679 JB |
5331 | { |
5332 | int bit_size = TYPE_FIELD_BITSIZE (type, i); | |
5333 | *field_type_p = TYPE_FIELD_TYPE (type, i); | |
5334 | *byte_offset_p = fld_offset; | |
5335 | *bit_offset_p = bit_pos % 8; | |
5336 | *bit_size_p = bit_size; | |
5337 | return 1; | |
5338 | } | |
4c4b4cd2 PH |
5339 | else if (ada_is_wrapper_field (type, i)) |
5340 | { | |
76a01679 JB |
5341 | if (find_struct_field (name, TYPE_FIELD_TYPE (type, i), fld_offset, |
5342 | field_type_p, byte_offset_p, bit_offset_p, | |
5343 | bit_size_p)) | |
5344 | return 1; | |
5345 | } | |
4c4b4cd2 PH |
5346 | else if (ada_is_variant_part (type, i)) |
5347 | { | |
5348 | int j; | |
61ee279c | 5349 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type, i)); |
4c4b4cd2 PH |
5350 | |
5351 | for (j = TYPE_NFIELDS (field_type) - 1; j >= 0; j -= 1) | |
5352 | { | |
76a01679 JB |
5353 | if (find_struct_field (name, TYPE_FIELD_TYPE (field_type, j), |
5354 | fld_offset | |
5355 | + TYPE_FIELD_BITPOS (field_type, j) / 8, | |
5356 | field_type_p, byte_offset_p, | |
5357 | bit_offset_p, bit_size_p)) | |
5358 | return 1; | |
4c4b4cd2 PH |
5359 | } |
5360 | } | |
5361 | } | |
5362 | return 0; | |
5363 | } | |
5364 | ||
5365 | ||
14f9c5c9 | 5366 | |
4c4b4cd2 | 5367 | /* Look for a field NAME in ARG. Adjust the address of ARG by OFFSET bytes, |
14f9c5c9 AS |
5368 | and search in it assuming it has (class) type TYPE. |
5369 | If found, return value, else return NULL. | |
5370 | ||
4c4b4cd2 | 5371 | Searches recursively through wrapper fields (e.g., '_parent'). */ |
14f9c5c9 | 5372 | |
4c4b4cd2 | 5373 | static struct value * |
d2e4a39e | 5374 | ada_search_struct_field (char *name, struct value *arg, int offset, |
4c4b4cd2 | 5375 | struct type *type) |
14f9c5c9 AS |
5376 | { |
5377 | int i; | |
61ee279c | 5378 | type = ada_check_typedef (type); |
14f9c5c9 | 5379 | |
d2e4a39e | 5380 | for (i = TYPE_NFIELDS (type) - 1; i >= 0; i -= 1) |
14f9c5c9 AS |
5381 | { |
5382 | char *t_field_name = TYPE_FIELD_NAME (type, i); | |
5383 | ||
5384 | if (t_field_name == NULL) | |
4c4b4cd2 | 5385 | continue; |
14f9c5c9 AS |
5386 | |
5387 | else if (field_name_match (t_field_name, name)) | |
4c4b4cd2 | 5388 | return ada_value_primitive_field (arg, offset, i, type); |
14f9c5c9 AS |
5389 | |
5390 | else if (ada_is_wrapper_field (type, i)) | |
4c4b4cd2 | 5391 | { |
06d5cf63 JB |
5392 | struct value *v = /* Do not let indent join lines here. */ |
5393 | ada_search_struct_field (name, arg, | |
5394 | offset + TYPE_FIELD_BITPOS (type, i) / 8, | |
5395 | TYPE_FIELD_TYPE (type, i)); | |
4c4b4cd2 PH |
5396 | if (v != NULL) |
5397 | return v; | |
5398 | } | |
14f9c5c9 AS |
5399 | |
5400 | else if (ada_is_variant_part (type, i)) | |
4c4b4cd2 PH |
5401 | { |
5402 | int j; | |
61ee279c | 5403 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type, i)); |
4c4b4cd2 PH |
5404 | int var_offset = offset + TYPE_FIELD_BITPOS (type, i) / 8; |
5405 | ||
5406 | for (j = TYPE_NFIELDS (field_type) - 1; j >= 0; j -= 1) | |
5407 | { | |
06d5cf63 JB |
5408 | struct value *v = ada_search_struct_field /* Force line break. */ |
5409 | (name, arg, | |
5410 | var_offset + TYPE_FIELD_BITPOS (field_type, j) / 8, | |
5411 | TYPE_FIELD_TYPE (field_type, j)); | |
4c4b4cd2 PH |
5412 | if (v != NULL) |
5413 | return v; | |
5414 | } | |
5415 | } | |
14f9c5c9 AS |
5416 | } |
5417 | return NULL; | |
5418 | } | |
d2e4a39e | 5419 | |
4c4b4cd2 PH |
5420 | /* Given ARG, a value of type (pointer or reference to a)* |
5421 | structure/union, extract the component named NAME from the ultimate | |
5422 | target structure/union and return it as a value with its | |
5423 | appropriate type. If ARG is a pointer or reference and the field | |
5424 | is not packed, returns a reference to the field, otherwise the | |
5425 | value of the field (an lvalue if ARG is an lvalue). | |
14f9c5c9 | 5426 | |
4c4b4cd2 PH |
5427 | The routine searches for NAME among all members of the structure itself |
5428 | and (recursively) among all members of any wrapper members | |
14f9c5c9 AS |
5429 | (e.g., '_parent'). |
5430 | ||
4c4b4cd2 PH |
5431 | ERR is a name (for use in error messages) that identifies the class |
5432 | of entity that ARG is supposed to be. ERR may be null, indicating | |
5433 | that on error, the function simply returns NULL, and does not | |
5434 | throw an error. (FIXME: True only if ARG is a pointer or reference | |
5435 | at the moment). */ | |
14f9c5c9 | 5436 | |
d2e4a39e | 5437 | struct value * |
ebf56fd3 | 5438 | ada_value_struct_elt (struct value *arg, char *name, char *err) |
14f9c5c9 | 5439 | { |
4c4b4cd2 | 5440 | struct type *t, *t1; |
d2e4a39e | 5441 | struct value *v; |
14f9c5c9 | 5442 | |
4c4b4cd2 | 5443 | v = NULL; |
61ee279c | 5444 | t1 = t = ada_check_typedef (VALUE_TYPE (arg)); |
4c4b4cd2 PH |
5445 | if (TYPE_CODE (t) == TYPE_CODE_REF) |
5446 | { | |
5447 | t1 = TYPE_TARGET_TYPE (t); | |
5448 | if (t1 == NULL) | |
76a01679 JB |
5449 | { |
5450 | if (err == NULL) | |
5451 | return NULL; | |
5452 | else | |
5453 | error ("Bad value type in a %s.", err); | |
5454 | } | |
61ee279c | 5455 | t1 = ada_check_typedef (t1); |
4c4b4cd2 | 5456 | if (TYPE_CODE (t1) == TYPE_CODE_PTR) |
76a01679 JB |
5457 | { |
5458 | COERCE_REF (arg); | |
5459 | t = t1; | |
5460 | } | |
4c4b4cd2 | 5461 | } |
14f9c5c9 | 5462 | |
4c4b4cd2 PH |
5463 | while (TYPE_CODE (t) == TYPE_CODE_PTR) |
5464 | { | |
5465 | t1 = TYPE_TARGET_TYPE (t); | |
5466 | if (t1 == NULL) | |
76a01679 JB |
5467 | { |
5468 | if (err == NULL) | |
5469 | return NULL; | |
5470 | else | |
5471 | error ("Bad value type in a %s.", err); | |
5472 | } | |
61ee279c | 5473 | t1 = ada_check_typedef (t1); |
4c4b4cd2 | 5474 | if (TYPE_CODE (t1) == TYPE_CODE_PTR) |
76a01679 JB |
5475 | { |
5476 | arg = value_ind (arg); | |
5477 | t = t1; | |
5478 | } | |
4c4b4cd2 | 5479 | else |
76a01679 | 5480 | break; |
4c4b4cd2 | 5481 | } |
14f9c5c9 | 5482 | |
4c4b4cd2 | 5483 | if (TYPE_CODE (t1) != TYPE_CODE_STRUCT && TYPE_CODE (t1) != TYPE_CODE_UNION) |
14f9c5c9 | 5484 | { |
4c4b4cd2 | 5485 | if (err == NULL) |
76a01679 | 5486 | return NULL; |
4c4b4cd2 | 5487 | else |
76a01679 JB |
5488 | error ("Attempt to extract a component of a value that is not a %s.", |
5489 | err); | |
14f9c5c9 AS |
5490 | } |
5491 | ||
4c4b4cd2 PH |
5492 | if (t1 == t) |
5493 | v = ada_search_struct_field (name, arg, 0, t); | |
5494 | else | |
5495 | { | |
5496 | int bit_offset, bit_size, byte_offset; | |
5497 | struct type *field_type; | |
5498 | CORE_ADDR address; | |
5499 | ||
76a01679 JB |
5500 | if (TYPE_CODE (t) == TYPE_CODE_PTR) |
5501 | address = value_as_address (arg); | |
4c4b4cd2 | 5502 | else |
76a01679 | 5503 | address = unpack_pointer (t, VALUE_CONTENTS (arg)); |
14f9c5c9 | 5504 | |
4c4b4cd2 | 5505 | t1 = ada_to_fixed_type (ada_get_base_type (t1), NULL, address, NULL); |
76a01679 JB |
5506 | if (find_struct_field (name, t1, 0, |
5507 | &field_type, &byte_offset, &bit_offset, | |
5508 | &bit_size)) | |
5509 | { | |
5510 | if (bit_size != 0) | |
5511 | { | |
5512 | arg = ada_value_ind (arg); | |
5513 | v = ada_value_primitive_packed_val (arg, NULL, byte_offset, | |
5514 | bit_offset, bit_size, | |
5515 | field_type); | |
5516 | } | |
5517 | else | |
5518 | v = value_from_pointer (lookup_reference_type (field_type), | |
5519 | address + byte_offset); | |
5520 | } | |
5521 | } | |
5522 | ||
4c4b4cd2 | 5523 | if (v == NULL && err != NULL) |
14f9c5c9 AS |
5524 | error ("There is no member named %s.", name); |
5525 | ||
5526 | return v; | |
5527 | } | |
5528 | ||
5529 | /* Given a type TYPE, look up the type of the component of type named NAME. | |
4c4b4cd2 PH |
5530 | If DISPP is non-null, add its byte displacement from the beginning of a |
5531 | structure (pointed to by a value) of type TYPE to *DISPP (does not | |
14f9c5c9 AS |
5532 | work for packed fields). |
5533 | ||
5534 | Matches any field whose name has NAME as a prefix, possibly | |
4c4b4cd2 | 5535 | followed by "___". |
14f9c5c9 | 5536 | |
4c4b4cd2 PH |
5537 | TYPE can be either a struct or union. If REFOK, TYPE may also |
5538 | be a (pointer or reference)+ to a struct or union, and the | |
5539 | ultimate target type will be searched. | |
14f9c5c9 AS |
5540 | |
5541 | Looks recursively into variant clauses and parent types. | |
5542 | ||
4c4b4cd2 PH |
5543 | If NOERR is nonzero, return NULL if NAME is not suitably defined or |
5544 | TYPE is not a type of the right kind. */ | |
14f9c5c9 | 5545 | |
4c4b4cd2 | 5546 | static struct type * |
76a01679 JB |
5547 | ada_lookup_struct_elt_type (struct type *type, char *name, int refok, |
5548 | int noerr, int *dispp) | |
14f9c5c9 AS |
5549 | { |
5550 | int i; | |
5551 | ||
5552 | if (name == NULL) | |
5553 | goto BadName; | |
5554 | ||
76a01679 | 5555 | if (refok && type != NULL) |
4c4b4cd2 PH |
5556 | while (1) |
5557 | { | |
61ee279c | 5558 | type = ada_check_typedef (type); |
76a01679 JB |
5559 | if (TYPE_CODE (type) != TYPE_CODE_PTR |
5560 | && TYPE_CODE (type) != TYPE_CODE_REF) | |
5561 | break; | |
5562 | type = TYPE_TARGET_TYPE (type); | |
4c4b4cd2 | 5563 | } |
14f9c5c9 | 5564 | |
76a01679 | 5565 | if (type == NULL |
1265e4aa JB |
5566 | || (TYPE_CODE (type) != TYPE_CODE_STRUCT |
5567 | && TYPE_CODE (type) != TYPE_CODE_UNION)) | |
14f9c5c9 | 5568 | { |
4c4b4cd2 | 5569 | if (noerr) |
76a01679 | 5570 | return NULL; |
4c4b4cd2 | 5571 | else |
76a01679 JB |
5572 | { |
5573 | target_terminal_ours (); | |
5574 | gdb_flush (gdb_stdout); | |
5575 | fprintf_unfiltered (gdb_stderr, "Type "); | |
5576 | if (type == NULL) | |
5577 | fprintf_unfiltered (gdb_stderr, "(null)"); | |
5578 | else | |
5579 | type_print (type, "", gdb_stderr, -1); | |
5580 | error (" is not a structure or union type"); | |
5581 | } | |
14f9c5c9 AS |
5582 | } |
5583 | ||
5584 | type = to_static_fixed_type (type); | |
5585 | ||
5586 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
5587 | { | |
5588 | char *t_field_name = TYPE_FIELD_NAME (type, i); | |
5589 | struct type *t; | |
5590 | int disp; | |
d2e4a39e | 5591 | |
14f9c5c9 | 5592 | if (t_field_name == NULL) |
4c4b4cd2 | 5593 | continue; |
14f9c5c9 AS |
5594 | |
5595 | else if (field_name_match (t_field_name, name)) | |
4c4b4cd2 PH |
5596 | { |
5597 | if (dispp != NULL) | |
5598 | *dispp += TYPE_FIELD_BITPOS (type, i) / 8; | |
61ee279c | 5599 | return ada_check_typedef (TYPE_FIELD_TYPE (type, i)); |
4c4b4cd2 | 5600 | } |
14f9c5c9 AS |
5601 | |
5602 | else if (ada_is_wrapper_field (type, i)) | |
4c4b4cd2 PH |
5603 | { |
5604 | disp = 0; | |
5605 | t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, | |
5606 | 0, 1, &disp); | |
5607 | if (t != NULL) | |
5608 | { | |
5609 | if (dispp != NULL) | |
5610 | *dispp += disp + TYPE_FIELD_BITPOS (type, i) / 8; | |
5611 | return t; | |
5612 | } | |
5613 | } | |
14f9c5c9 AS |
5614 | |
5615 | else if (ada_is_variant_part (type, i)) | |
4c4b4cd2 PH |
5616 | { |
5617 | int j; | |
61ee279c | 5618 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type, i)); |
4c4b4cd2 PH |
5619 | |
5620 | for (j = TYPE_NFIELDS (field_type) - 1; j >= 0; j -= 1) | |
5621 | { | |
5622 | disp = 0; | |
5623 | t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (field_type, j), | |
5624 | name, 0, 1, &disp); | |
5625 | if (t != NULL) | |
5626 | { | |
5627 | if (dispp != NULL) | |
5628 | *dispp += disp + TYPE_FIELD_BITPOS (type, i) / 8; | |
5629 | return t; | |
5630 | } | |
5631 | } | |
5632 | } | |
14f9c5c9 AS |
5633 | |
5634 | } | |
5635 | ||
5636 | BadName: | |
d2e4a39e | 5637 | if (!noerr) |
14f9c5c9 AS |
5638 | { |
5639 | target_terminal_ours (); | |
5640 | gdb_flush (gdb_stdout); | |
5641 | fprintf_unfiltered (gdb_stderr, "Type "); | |
5642 | type_print (type, "", gdb_stderr, -1); | |
5643 | fprintf_unfiltered (gdb_stderr, " has no component named "); | |
5644 | error ("%s", name == NULL ? "<null>" : name); | |
5645 | } | |
5646 | ||
5647 | return NULL; | |
5648 | } | |
5649 | ||
5650 | /* Assuming that VAR_TYPE is the type of a variant part of a record (a union), | |
5651 | within a value of type OUTER_TYPE that is stored in GDB at | |
4c4b4cd2 PH |
5652 | OUTER_VALADDR, determine which variant clause (field number in VAR_TYPE, |
5653 | numbering from 0) is applicable. Returns -1 if none are. */ | |
14f9c5c9 | 5654 | |
d2e4a39e | 5655 | int |
ebf56fd3 | 5656 | ada_which_variant_applies (struct type *var_type, struct type *outer_type, |
4c4b4cd2 | 5657 | char *outer_valaddr) |
14f9c5c9 AS |
5658 | { |
5659 | int others_clause; | |
5660 | int i; | |
5661 | int disp; | |
d2e4a39e AS |
5662 | struct type *discrim_type; |
5663 | char *discrim_name = ada_variant_discrim_name (var_type); | |
14f9c5c9 AS |
5664 | LONGEST discrim_val; |
5665 | ||
5666 | disp = 0; | |
d2e4a39e | 5667 | discrim_type = |
4c4b4cd2 | 5668 | ada_lookup_struct_elt_type (outer_type, discrim_name, 1, 1, &disp); |
14f9c5c9 AS |
5669 | if (discrim_type == NULL) |
5670 | return -1; | |
5671 | discrim_val = unpack_long (discrim_type, outer_valaddr + disp); | |
5672 | ||
5673 | others_clause = -1; | |
5674 | for (i = 0; i < TYPE_NFIELDS (var_type); i += 1) | |
5675 | { | |
5676 | if (ada_is_others_clause (var_type, i)) | |
4c4b4cd2 | 5677 | others_clause = i; |
14f9c5c9 | 5678 | else if (ada_in_variant (discrim_val, var_type, i)) |
4c4b4cd2 | 5679 | return i; |
14f9c5c9 AS |
5680 | } |
5681 | ||
5682 | return others_clause; | |
5683 | } | |
d2e4a39e | 5684 | \f |
14f9c5c9 AS |
5685 | |
5686 | ||
4c4b4cd2 | 5687 | /* Dynamic-Sized Records */ |
14f9c5c9 AS |
5688 | |
5689 | /* Strategy: The type ostensibly attached to a value with dynamic size | |
5690 | (i.e., a size that is not statically recorded in the debugging | |
5691 | data) does not accurately reflect the size or layout of the value. | |
5692 | Our strategy is to convert these values to values with accurate, | |
4c4b4cd2 | 5693 | conventional types that are constructed on the fly. */ |
14f9c5c9 AS |
5694 | |
5695 | /* There is a subtle and tricky problem here. In general, we cannot | |
5696 | determine the size of dynamic records without its data. However, | |
5697 | the 'struct value' data structure, which GDB uses to represent | |
5698 | quantities in the inferior process (the target), requires the size | |
5699 | of the type at the time of its allocation in order to reserve space | |
5700 | for GDB's internal copy of the data. That's why the | |
5701 | 'to_fixed_xxx_type' routines take (target) addresses as parameters, | |
4c4b4cd2 | 5702 | rather than struct value*s. |
14f9c5c9 AS |
5703 | |
5704 | However, GDB's internal history variables ($1, $2, etc.) are | |
5705 | struct value*s containing internal copies of the data that are not, in | |
5706 | general, the same as the data at their corresponding addresses in | |
5707 | the target. Fortunately, the types we give to these values are all | |
5708 | conventional, fixed-size types (as per the strategy described | |
5709 | above), so that we don't usually have to perform the | |
5710 | 'to_fixed_xxx_type' conversions to look at their values. | |
5711 | Unfortunately, there is one exception: if one of the internal | |
5712 | history variables is an array whose elements are unconstrained | |
5713 | records, then we will need to create distinct fixed types for each | |
5714 | element selected. */ | |
5715 | ||
5716 | /* The upshot of all of this is that many routines take a (type, host | |
5717 | address, target address) triple as arguments to represent a value. | |
5718 | The host address, if non-null, is supposed to contain an internal | |
5719 | copy of the relevant data; otherwise, the program is to consult the | |
4c4b4cd2 | 5720 | target at the target address. */ |
14f9c5c9 AS |
5721 | |
5722 | /* Assuming that VAL0 represents a pointer value, the result of | |
5723 | dereferencing it. Differs from value_ind in its treatment of | |
4c4b4cd2 | 5724 | dynamic-sized types. */ |
14f9c5c9 | 5725 | |
d2e4a39e AS |
5726 | struct value * |
5727 | ada_value_ind (struct value *val0) | |
14f9c5c9 | 5728 | { |
d2e4a39e | 5729 | struct value *val = unwrap_value (value_ind (val0)); |
4c4b4cd2 | 5730 | return ada_to_fixed_value (val); |
14f9c5c9 AS |
5731 | } |
5732 | ||
5733 | /* The value resulting from dereferencing any "reference to" | |
4c4b4cd2 PH |
5734 | qualifiers on VAL0. */ |
5735 | ||
d2e4a39e AS |
5736 | static struct value * |
5737 | ada_coerce_ref (struct value *val0) | |
5738 | { | |
5739 | if (TYPE_CODE (VALUE_TYPE (val0)) == TYPE_CODE_REF) | |
5740 | { | |
5741 | struct value *val = val0; | |
5742 | COERCE_REF (val); | |
5743 | val = unwrap_value (val); | |
4c4b4cd2 | 5744 | return ada_to_fixed_value (val); |
d2e4a39e AS |
5745 | } |
5746 | else | |
14f9c5c9 AS |
5747 | return val0; |
5748 | } | |
5749 | ||
5750 | /* Return OFF rounded upward if necessary to a multiple of | |
4c4b4cd2 | 5751 | ALIGNMENT (a power of 2). */ |
14f9c5c9 AS |
5752 | |
5753 | static unsigned int | |
ebf56fd3 | 5754 | align_value (unsigned int off, unsigned int alignment) |
14f9c5c9 AS |
5755 | { |
5756 | return (off + alignment - 1) & ~(alignment - 1); | |
5757 | } | |
5758 | ||
4c4b4cd2 | 5759 | /* Return the bit alignment required for field #F of template type TYPE. */ |
14f9c5c9 AS |
5760 | |
5761 | static unsigned int | |
ebf56fd3 | 5762 | field_alignment (struct type *type, int f) |
14f9c5c9 | 5763 | { |
d2e4a39e | 5764 | const char *name = TYPE_FIELD_NAME (type, f); |
14f9c5c9 AS |
5765 | int len = (name == NULL) ? 0 : strlen (name); |
5766 | int align_offset; | |
5767 | ||
4c4b4cd2 PH |
5768 | if (!isdigit (name[len - 1])) |
5769 | return 1; | |
14f9c5c9 | 5770 | |
d2e4a39e | 5771 | if (isdigit (name[len - 2])) |
14f9c5c9 AS |
5772 | align_offset = len - 2; |
5773 | else | |
5774 | align_offset = len - 1; | |
5775 | ||
4c4b4cd2 | 5776 | if (align_offset < 7 || strncmp ("___XV", name + align_offset - 6, 5) != 0) |
14f9c5c9 AS |
5777 | return TARGET_CHAR_BIT; |
5778 | ||
4c4b4cd2 PH |
5779 | return atoi (name + align_offset) * TARGET_CHAR_BIT; |
5780 | } | |
5781 | ||
5782 | /* Find a symbol named NAME. Ignores ambiguity. */ | |
5783 | ||
5784 | struct symbol * | |
5785 | ada_find_any_symbol (const char *name) | |
5786 | { | |
5787 | struct symbol *sym; | |
5788 | ||
5789 | sym = standard_lookup (name, get_selected_block (NULL), VAR_DOMAIN); | |
5790 | if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
5791 | return sym; | |
5792 | ||
5793 | sym = standard_lookup (name, NULL, STRUCT_DOMAIN); | |
5794 | return sym; | |
14f9c5c9 AS |
5795 | } |
5796 | ||
5797 | /* Find a type named NAME. Ignores ambiguity. */ | |
4c4b4cd2 | 5798 | |
d2e4a39e | 5799 | struct type * |
ebf56fd3 | 5800 | ada_find_any_type (const char *name) |
14f9c5c9 | 5801 | { |
4c4b4cd2 | 5802 | struct symbol *sym = ada_find_any_symbol (name); |
14f9c5c9 | 5803 | |
14f9c5c9 AS |
5804 | if (sym != NULL) |
5805 | return SYMBOL_TYPE (sym); | |
5806 | ||
5807 | return NULL; | |
5808 | } | |
5809 | ||
4c4b4cd2 PH |
5810 | /* Given a symbol NAME and its associated BLOCK, search all symbols |
5811 | for its ___XR counterpart, which is the ``renaming'' symbol | |
5812 | associated to NAME. Return this symbol if found, return | |
5813 | NULL otherwise. */ | |
5814 | ||
5815 | struct symbol * | |
5816 | ada_find_renaming_symbol (const char *name, struct block *block) | |
5817 | { | |
5818 | const struct symbol *function_sym = block_function (block); | |
5819 | char *rename; | |
5820 | ||
5821 | if (function_sym != NULL) | |
5822 | { | |
5823 | /* If the symbol is defined inside a function, NAME is not fully | |
5824 | qualified. This means we need to prepend the function name | |
5825 | as well as adding the ``___XR'' suffix to build the name of | |
5826 | the associated renaming symbol. */ | |
5827 | char *function_name = SYMBOL_LINKAGE_NAME (function_sym); | |
5828 | const int function_name_len = strlen (function_name); | |
76a01679 JB |
5829 | const int rename_len = function_name_len + 2 /* "__" */ |
5830 | + strlen (name) + 6 /* "___XR\0" */ ; | |
4c4b4cd2 PH |
5831 | |
5832 | /* Library-level functions are a special case, as GNAT adds | |
5833 | a ``_ada_'' prefix to the function name to avoid namespace | |
5834 | pollution. However, the renaming symbol themselves do not | |
5835 | have this prefix, so we need to skip this prefix if present. */ | |
5836 | if (function_name_len > 5 /* "_ada_" */ | |
5837 | && strstr (function_name, "_ada_") == function_name) | |
5838 | function_name = function_name + 5; | |
5839 | ||
5840 | rename = (char *) alloca (rename_len * sizeof (char)); | |
5841 | sprintf (rename, "%s__%s___XR", function_name, name); | |
5842 | } | |
5843 | else | |
5844 | { | |
5845 | const int rename_len = strlen (name) + 6; | |
5846 | rename = (char *) alloca (rename_len * sizeof (char)); | |
5847 | sprintf (rename, "%s___XR", name); | |
5848 | } | |
5849 | ||
5850 | return ada_find_any_symbol (rename); | |
5851 | } | |
5852 | ||
14f9c5c9 | 5853 | /* Because of GNAT encoding conventions, several GDB symbols may match a |
4c4b4cd2 | 5854 | given type name. If the type denoted by TYPE0 is to be preferred to |
14f9c5c9 | 5855 | that of TYPE1 for purposes of type printing, return non-zero; |
4c4b4cd2 PH |
5856 | otherwise return 0. */ |
5857 | ||
14f9c5c9 | 5858 | int |
d2e4a39e | 5859 | ada_prefer_type (struct type *type0, struct type *type1) |
14f9c5c9 AS |
5860 | { |
5861 | if (type1 == NULL) | |
5862 | return 1; | |
5863 | else if (type0 == NULL) | |
5864 | return 0; | |
5865 | else if (TYPE_CODE (type1) == TYPE_CODE_VOID) | |
5866 | return 1; | |
5867 | else if (TYPE_CODE (type0) == TYPE_CODE_VOID) | |
5868 | return 0; | |
4c4b4cd2 PH |
5869 | else if (TYPE_NAME (type1) == NULL && TYPE_NAME (type0) != NULL) |
5870 | return 1; | |
14f9c5c9 AS |
5871 | else if (ada_is_packed_array_type (type0)) |
5872 | return 1; | |
4c4b4cd2 PH |
5873 | else if (ada_is_array_descriptor_type (type0) |
5874 | && !ada_is_array_descriptor_type (type1)) | |
14f9c5c9 | 5875 | return 1; |
d2e4a39e | 5876 | else if (ada_renaming_type (type0) != NULL |
4c4b4cd2 | 5877 | && ada_renaming_type (type1) == NULL) |
14f9c5c9 AS |
5878 | return 1; |
5879 | return 0; | |
5880 | } | |
5881 | ||
5882 | /* The name of TYPE, which is either its TYPE_NAME, or, if that is | |
4c4b4cd2 PH |
5883 | null, its TYPE_TAG_NAME. Null if TYPE is null. */ |
5884 | ||
d2e4a39e AS |
5885 | char * |
5886 | ada_type_name (struct type *type) | |
14f9c5c9 | 5887 | { |
d2e4a39e | 5888 | if (type == NULL) |
14f9c5c9 AS |
5889 | return NULL; |
5890 | else if (TYPE_NAME (type) != NULL) | |
5891 | return TYPE_NAME (type); | |
5892 | else | |
5893 | return TYPE_TAG_NAME (type); | |
5894 | } | |
5895 | ||
5896 | /* Find a parallel type to TYPE whose name is formed by appending | |
4c4b4cd2 | 5897 | SUFFIX to the name of TYPE. */ |
14f9c5c9 | 5898 | |
d2e4a39e | 5899 | struct type * |
ebf56fd3 | 5900 | ada_find_parallel_type (struct type *type, const char *suffix) |
14f9c5c9 | 5901 | { |
d2e4a39e | 5902 | static char *name; |
14f9c5c9 | 5903 | static size_t name_len = 0; |
14f9c5c9 | 5904 | int len; |
d2e4a39e AS |
5905 | char *typename = ada_type_name (type); |
5906 | ||
14f9c5c9 AS |
5907 | if (typename == NULL) |
5908 | return NULL; | |
5909 | ||
5910 | len = strlen (typename); | |
5911 | ||
d2e4a39e | 5912 | GROW_VECT (name, name_len, len + strlen (suffix) + 1); |
14f9c5c9 AS |
5913 | |
5914 | strcpy (name, typename); | |
5915 | strcpy (name + len, suffix); | |
5916 | ||
5917 | return ada_find_any_type (name); | |
5918 | } | |
5919 | ||
5920 | ||
5921 | /* If TYPE is a variable-size record type, return the corresponding template | |
4c4b4cd2 | 5922 | type describing its fields. Otherwise, return NULL. */ |
14f9c5c9 | 5923 | |
d2e4a39e AS |
5924 | static struct type * |
5925 | dynamic_template_type (struct type *type) | |
14f9c5c9 | 5926 | { |
61ee279c | 5927 | type = ada_check_typedef (type); |
14f9c5c9 AS |
5928 | |
5929 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT | |
d2e4a39e | 5930 | || ada_type_name (type) == NULL) |
14f9c5c9 | 5931 | return NULL; |
d2e4a39e | 5932 | else |
14f9c5c9 AS |
5933 | { |
5934 | int len = strlen (ada_type_name (type)); | |
4c4b4cd2 PH |
5935 | if (len > 6 && strcmp (ada_type_name (type) + len - 6, "___XVE") == 0) |
5936 | return type; | |
14f9c5c9 | 5937 | else |
4c4b4cd2 | 5938 | return ada_find_parallel_type (type, "___XVE"); |
14f9c5c9 AS |
5939 | } |
5940 | } | |
5941 | ||
5942 | /* Assuming that TEMPL_TYPE is a union or struct type, returns | |
4c4b4cd2 | 5943 | non-zero iff field FIELD_NUM of TEMPL_TYPE has dynamic size. */ |
14f9c5c9 | 5944 | |
d2e4a39e AS |
5945 | static int |
5946 | is_dynamic_field (struct type *templ_type, int field_num) | |
14f9c5c9 AS |
5947 | { |
5948 | const char *name = TYPE_FIELD_NAME (templ_type, field_num); | |
d2e4a39e | 5949 | return name != NULL |
14f9c5c9 AS |
5950 | && TYPE_CODE (TYPE_FIELD_TYPE (templ_type, field_num)) == TYPE_CODE_PTR |
5951 | && strstr (name, "___XVL") != NULL; | |
5952 | } | |
5953 | ||
4c4b4cd2 PH |
5954 | /* The index of the variant field of TYPE, or -1 if TYPE does not |
5955 | represent a variant record type. */ | |
14f9c5c9 | 5956 | |
d2e4a39e | 5957 | static int |
4c4b4cd2 | 5958 | variant_field_index (struct type *type) |
14f9c5c9 AS |
5959 | { |
5960 | int f; | |
5961 | ||
4c4b4cd2 PH |
5962 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT) |
5963 | return -1; | |
5964 | ||
5965 | for (f = 0; f < TYPE_NFIELDS (type); f += 1) | |
5966 | { | |
5967 | if (ada_is_variant_part (type, f)) | |
5968 | return f; | |
5969 | } | |
5970 | return -1; | |
14f9c5c9 AS |
5971 | } |
5972 | ||
4c4b4cd2 PH |
5973 | /* A record type with no fields. */ |
5974 | ||
d2e4a39e AS |
5975 | static struct type * |
5976 | empty_record (struct objfile *objfile) | |
14f9c5c9 | 5977 | { |
d2e4a39e | 5978 | struct type *type = alloc_type (objfile); |
14f9c5c9 AS |
5979 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
5980 | TYPE_NFIELDS (type) = 0; | |
5981 | TYPE_FIELDS (type) = NULL; | |
5982 | TYPE_NAME (type) = "<empty>"; | |
5983 | TYPE_TAG_NAME (type) = NULL; | |
5984 | TYPE_FLAGS (type) = 0; | |
5985 | TYPE_LENGTH (type) = 0; | |
5986 | return type; | |
5987 | } | |
5988 | ||
5989 | /* An ordinary record type (with fixed-length fields) that describes | |
4c4b4cd2 PH |
5990 | the value of type TYPE at VALADDR or ADDRESS (see comments at |
5991 | the beginning of this section) VAL according to GNAT conventions. | |
5992 | DVAL0 should describe the (portion of a) record that contains any | |
14f9c5c9 AS |
5993 | necessary discriminants. It should be NULL if VALUE_TYPE (VAL) is |
5994 | an outer-level type (i.e., as opposed to a branch of a variant.) A | |
5995 | variant field (unless unchecked) is replaced by a particular branch | |
4c4b4cd2 | 5996 | of the variant. |
14f9c5c9 | 5997 | |
4c4b4cd2 PH |
5998 | If not KEEP_DYNAMIC_FIELDS, then all fields whose position or |
5999 | length are not statically known are discarded. As a consequence, | |
6000 | VALADDR, ADDRESS and DVAL0 are ignored. | |
6001 | ||
6002 | NOTE: Limitations: For now, we assume that dynamic fields and | |
6003 | variants occupy whole numbers of bytes. However, they need not be | |
6004 | byte-aligned. */ | |
6005 | ||
6006 | struct type * | |
6007 | ada_template_to_fixed_record_type_1 (struct type *type, char *valaddr, | |
6008 | CORE_ADDR address, struct value *dval0, | |
6009 | int keep_dynamic_fields) | |
14f9c5c9 | 6010 | { |
d2e4a39e AS |
6011 | struct value *mark = value_mark (); |
6012 | struct value *dval; | |
6013 | struct type *rtype; | |
14f9c5c9 | 6014 | int nfields, bit_len; |
4c4b4cd2 | 6015 | int variant_field; |
14f9c5c9 | 6016 | long off; |
4c4b4cd2 | 6017 | int fld_bit_len, bit_incr; |
14f9c5c9 AS |
6018 | int f; |
6019 | ||
4c4b4cd2 PH |
6020 | /* Compute the number of fields in this record type that are going |
6021 | to be processed: unless keep_dynamic_fields, this includes only | |
6022 | fields whose position and length are static will be processed. */ | |
6023 | if (keep_dynamic_fields) | |
6024 | nfields = TYPE_NFIELDS (type); | |
6025 | else | |
6026 | { | |
6027 | nfields = 0; | |
76a01679 | 6028 | while (nfields < TYPE_NFIELDS (type) |
4c4b4cd2 PH |
6029 | && !ada_is_variant_part (type, nfields) |
6030 | && !is_dynamic_field (type, nfields)) | |
6031 | nfields++; | |
6032 | } | |
6033 | ||
14f9c5c9 AS |
6034 | rtype = alloc_type (TYPE_OBJFILE (type)); |
6035 | TYPE_CODE (rtype) = TYPE_CODE_STRUCT; | |
6036 | INIT_CPLUS_SPECIFIC (rtype); | |
6037 | TYPE_NFIELDS (rtype) = nfields; | |
d2e4a39e | 6038 | TYPE_FIELDS (rtype) = (struct field *) |
14f9c5c9 AS |
6039 | TYPE_ALLOC (rtype, nfields * sizeof (struct field)); |
6040 | memset (TYPE_FIELDS (rtype), 0, sizeof (struct field) * nfields); | |
6041 | TYPE_NAME (rtype) = ada_type_name (type); | |
6042 | TYPE_TAG_NAME (rtype) = NULL; | |
4c4b4cd2 | 6043 | TYPE_FLAGS (rtype) |= TYPE_FLAG_FIXED_INSTANCE; |
14f9c5c9 | 6044 | |
d2e4a39e AS |
6045 | off = 0; |
6046 | bit_len = 0; | |
4c4b4cd2 PH |
6047 | variant_field = -1; |
6048 | ||
14f9c5c9 AS |
6049 | for (f = 0; f < nfields; f += 1) |
6050 | { | |
6c038f32 PH |
6051 | off = align_value (off, field_alignment (type, f)) |
6052 | + TYPE_FIELD_BITPOS (type, f); | |
14f9c5c9 | 6053 | TYPE_FIELD_BITPOS (rtype, f) = off; |
d2e4a39e | 6054 | TYPE_FIELD_BITSIZE (rtype, f) = 0; |
14f9c5c9 | 6055 | |
d2e4a39e | 6056 | if (ada_is_variant_part (type, f)) |
4c4b4cd2 PH |
6057 | { |
6058 | variant_field = f; | |
6059 | fld_bit_len = bit_incr = 0; | |
6060 | } | |
14f9c5c9 | 6061 | else if (is_dynamic_field (type, f)) |
4c4b4cd2 PH |
6062 | { |
6063 | if (dval0 == NULL) | |
6064 | dval = value_from_contents_and_address (rtype, valaddr, address); | |
6065 | else | |
6066 | dval = dval0; | |
6067 | ||
6068 | TYPE_FIELD_TYPE (rtype, f) = | |
6069 | ada_to_fixed_type | |
6070 | (ada_get_base_type | |
6071 | (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, f))), | |
6072 | cond_offset_host (valaddr, off / TARGET_CHAR_BIT), | |
6073 | cond_offset_target (address, off / TARGET_CHAR_BIT), dval); | |
6074 | TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f); | |
6075 | bit_incr = fld_bit_len = | |
6076 | TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, f)) * TARGET_CHAR_BIT; | |
6077 | } | |
14f9c5c9 | 6078 | else |
4c4b4cd2 PH |
6079 | { |
6080 | TYPE_FIELD_TYPE (rtype, f) = TYPE_FIELD_TYPE (type, f); | |
6081 | TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f); | |
6082 | if (TYPE_FIELD_BITSIZE (type, f) > 0) | |
6083 | bit_incr = fld_bit_len = | |
6084 | TYPE_FIELD_BITSIZE (rtype, f) = TYPE_FIELD_BITSIZE (type, f); | |
6085 | else | |
6086 | bit_incr = fld_bit_len = | |
6087 | TYPE_LENGTH (TYPE_FIELD_TYPE (type, f)) * TARGET_CHAR_BIT; | |
6088 | } | |
14f9c5c9 | 6089 | if (off + fld_bit_len > bit_len) |
4c4b4cd2 | 6090 | bit_len = off + fld_bit_len; |
14f9c5c9 | 6091 | off += bit_incr; |
4c4b4cd2 PH |
6092 | TYPE_LENGTH (rtype) = |
6093 | align_value (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT; | |
14f9c5c9 | 6094 | } |
4c4b4cd2 PH |
6095 | |
6096 | /* We handle the variant part, if any, at the end because of certain | |
6097 | odd cases in which it is re-ordered so as NOT the last field of | |
6098 | the record. This can happen in the presence of representation | |
6099 | clauses. */ | |
6100 | if (variant_field >= 0) | |
6101 | { | |
6102 | struct type *branch_type; | |
6103 | ||
6104 | off = TYPE_FIELD_BITPOS (rtype, variant_field); | |
6105 | ||
6106 | if (dval0 == NULL) | |
6107 | dval = value_from_contents_and_address (rtype, valaddr, address); | |
6108 | else | |
6109 | dval = dval0; | |
6110 | ||
6111 | branch_type = | |
6112 | to_fixed_variant_branch_type | |
6113 | (TYPE_FIELD_TYPE (type, variant_field), | |
6114 | cond_offset_host (valaddr, off / TARGET_CHAR_BIT), | |
6115 | cond_offset_target (address, off / TARGET_CHAR_BIT), dval); | |
6116 | if (branch_type == NULL) | |
6117 | { | |
6118 | for (f = variant_field + 1; f < TYPE_NFIELDS (rtype); f += 1) | |
6119 | TYPE_FIELDS (rtype)[f - 1] = TYPE_FIELDS (rtype)[f]; | |
6120 | TYPE_NFIELDS (rtype) -= 1; | |
6121 | } | |
6122 | else | |
6123 | { | |
6124 | TYPE_FIELD_TYPE (rtype, variant_field) = branch_type; | |
6125 | TYPE_FIELD_NAME (rtype, variant_field) = "S"; | |
6126 | fld_bit_len = | |
6127 | TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, variant_field)) * | |
6128 | TARGET_CHAR_BIT; | |
6129 | if (off + fld_bit_len > bit_len) | |
6130 | bit_len = off + fld_bit_len; | |
6131 | TYPE_LENGTH (rtype) = | |
6132 | align_value (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT; | |
6133 | } | |
6134 | } | |
6135 | ||
14f9c5c9 AS |
6136 | TYPE_LENGTH (rtype) = align_value (TYPE_LENGTH (rtype), TYPE_LENGTH (type)); |
6137 | ||
6138 | value_free_to_mark (mark); | |
d2e4a39e | 6139 | if (TYPE_LENGTH (rtype) > varsize_limit) |
14f9c5c9 AS |
6140 | error ("record type with dynamic size is larger than varsize-limit"); |
6141 | return rtype; | |
6142 | } | |
6143 | ||
4c4b4cd2 PH |
6144 | /* As for ada_template_to_fixed_record_type_1 with KEEP_DYNAMIC_FIELDS |
6145 | of 1. */ | |
14f9c5c9 | 6146 | |
d2e4a39e | 6147 | static struct type * |
4c4b4cd2 PH |
6148 | template_to_fixed_record_type (struct type *type, char *valaddr, |
6149 | CORE_ADDR address, struct value *dval0) | |
6150 | { | |
6151 | return ada_template_to_fixed_record_type_1 (type, valaddr, | |
6152 | address, dval0, 1); | |
6153 | } | |
6154 | ||
6155 | /* An ordinary record type in which ___XVL-convention fields and | |
6156 | ___XVU- and ___XVN-convention field types in TYPE0 are replaced with | |
6157 | static approximations, containing all possible fields. Uses | |
6158 | no runtime values. Useless for use in values, but that's OK, | |
6159 | since the results are used only for type determinations. Works on both | |
6160 | structs and unions. Representation note: to save space, we memorize | |
6161 | the result of this function in the TYPE_TARGET_TYPE of the | |
6162 | template type. */ | |
6163 | ||
6164 | static struct type * | |
6165 | template_to_static_fixed_type (struct type *type0) | |
14f9c5c9 AS |
6166 | { |
6167 | struct type *type; | |
6168 | int nfields; | |
6169 | int f; | |
6170 | ||
4c4b4cd2 PH |
6171 | if (TYPE_TARGET_TYPE (type0) != NULL) |
6172 | return TYPE_TARGET_TYPE (type0); | |
6173 | ||
6174 | nfields = TYPE_NFIELDS (type0); | |
6175 | type = type0; | |
14f9c5c9 AS |
6176 | |
6177 | for (f = 0; f < nfields; f += 1) | |
6178 | { | |
61ee279c | 6179 | struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type0, f)); |
4c4b4cd2 | 6180 | struct type *new_type; |
14f9c5c9 | 6181 | |
4c4b4cd2 PH |
6182 | if (is_dynamic_field (type0, f)) |
6183 | new_type = to_static_fixed_type (TYPE_TARGET_TYPE (field_type)); | |
14f9c5c9 | 6184 | else |
4c4b4cd2 PH |
6185 | new_type = to_static_fixed_type (field_type); |
6186 | if (type == type0 && new_type != field_type) | |
6187 | { | |
6188 | TYPE_TARGET_TYPE (type0) = type = alloc_type (TYPE_OBJFILE (type0)); | |
6189 | TYPE_CODE (type) = TYPE_CODE (type0); | |
6190 | INIT_CPLUS_SPECIFIC (type); | |
6191 | TYPE_NFIELDS (type) = nfields; | |
6192 | TYPE_FIELDS (type) = (struct field *) | |
6193 | TYPE_ALLOC (type, nfields * sizeof (struct field)); | |
6194 | memcpy (TYPE_FIELDS (type), TYPE_FIELDS (type0), | |
6195 | sizeof (struct field) * nfields); | |
6196 | TYPE_NAME (type) = ada_type_name (type0); | |
6197 | TYPE_TAG_NAME (type) = NULL; | |
6198 | TYPE_FLAGS (type) |= TYPE_FLAG_FIXED_INSTANCE; | |
6199 | TYPE_LENGTH (type) = 0; | |
6200 | } | |
6201 | TYPE_FIELD_TYPE (type, f) = new_type; | |
6202 | TYPE_FIELD_NAME (type, f) = TYPE_FIELD_NAME (type0, f); | |
14f9c5c9 | 6203 | } |
14f9c5c9 AS |
6204 | return type; |
6205 | } | |
6206 | ||
4c4b4cd2 PH |
6207 | /* Given an object of type TYPE whose contents are at VALADDR and |
6208 | whose address in memory is ADDRESS, returns a revision of TYPE -- | |
6209 | a non-dynamic-sized record with a variant part -- in which | |
6210 | the variant part is replaced with the appropriate branch. Looks | |
6211 | for discriminant values in DVAL0, which can be NULL if the record | |
6212 | contains the necessary discriminant values. */ | |
6213 | ||
d2e4a39e AS |
6214 | static struct type * |
6215 | to_record_with_fixed_variant_part (struct type *type, char *valaddr, | |
4c4b4cd2 | 6216 | CORE_ADDR address, struct value *dval0) |
14f9c5c9 | 6217 | { |
d2e4a39e | 6218 | struct value *mark = value_mark (); |
4c4b4cd2 | 6219 | struct value *dval; |
d2e4a39e | 6220 | struct type *rtype; |
14f9c5c9 AS |
6221 | struct type *branch_type; |
6222 | int nfields = TYPE_NFIELDS (type); | |
4c4b4cd2 | 6223 | int variant_field = variant_field_index (type); |
14f9c5c9 | 6224 | |
4c4b4cd2 | 6225 | if (variant_field == -1) |
14f9c5c9 AS |
6226 | return type; |
6227 | ||
4c4b4cd2 PH |
6228 | if (dval0 == NULL) |
6229 | dval = value_from_contents_and_address (type, valaddr, address); | |
6230 | else | |
6231 | dval = dval0; | |
6232 | ||
14f9c5c9 AS |
6233 | rtype = alloc_type (TYPE_OBJFILE (type)); |
6234 | TYPE_CODE (rtype) = TYPE_CODE_STRUCT; | |
4c4b4cd2 PH |
6235 | INIT_CPLUS_SPECIFIC (rtype); |
6236 | TYPE_NFIELDS (rtype) = nfields; | |
d2e4a39e AS |
6237 | TYPE_FIELDS (rtype) = |
6238 | (struct field *) TYPE_ALLOC (rtype, nfields * sizeof (struct field)); | |
6239 | memcpy (TYPE_FIELDS (rtype), TYPE_FIELDS (type), | |
4c4b4cd2 | 6240 | sizeof (struct field) * nfields); |
14f9c5c9 AS |
6241 | TYPE_NAME (rtype) = ada_type_name (type); |
6242 | TYPE_TAG_NAME (rtype) = NULL; | |
4c4b4cd2 | 6243 | TYPE_FLAGS (rtype) |= TYPE_FLAG_FIXED_INSTANCE; |
14f9c5c9 AS |
6244 | TYPE_LENGTH (rtype) = TYPE_LENGTH (type); |
6245 | ||
4c4b4cd2 PH |
6246 | branch_type = to_fixed_variant_branch_type |
6247 | (TYPE_FIELD_TYPE (type, variant_field), | |
d2e4a39e | 6248 | cond_offset_host (valaddr, |
4c4b4cd2 PH |
6249 | TYPE_FIELD_BITPOS (type, variant_field) |
6250 | / TARGET_CHAR_BIT), | |
d2e4a39e | 6251 | cond_offset_target (address, |
4c4b4cd2 PH |
6252 | TYPE_FIELD_BITPOS (type, variant_field) |
6253 | / TARGET_CHAR_BIT), dval); | |
d2e4a39e | 6254 | if (branch_type == NULL) |
14f9c5c9 | 6255 | { |
4c4b4cd2 PH |
6256 | int f; |
6257 | for (f = variant_field + 1; f < nfields; f += 1) | |
6258 | TYPE_FIELDS (rtype)[f - 1] = TYPE_FIELDS (rtype)[f]; | |
14f9c5c9 | 6259 | TYPE_NFIELDS (rtype) -= 1; |
14f9c5c9 AS |
6260 | } |
6261 | else | |
6262 | { | |
4c4b4cd2 PH |
6263 | TYPE_FIELD_TYPE (rtype, variant_field) = branch_type; |
6264 | TYPE_FIELD_NAME (rtype, variant_field) = "S"; | |
6265 | TYPE_FIELD_BITSIZE (rtype, variant_field) = 0; | |
14f9c5c9 | 6266 | TYPE_LENGTH (rtype) += TYPE_LENGTH (branch_type); |
14f9c5c9 | 6267 | } |
4c4b4cd2 | 6268 | TYPE_LENGTH (rtype) -= TYPE_LENGTH (TYPE_FIELD_TYPE (type, variant_field)); |
d2e4a39e | 6269 | |
4c4b4cd2 | 6270 | value_free_to_mark (mark); |
14f9c5c9 AS |
6271 | return rtype; |
6272 | } | |
6273 | ||
6274 | /* An ordinary record type (with fixed-length fields) that describes | |
6275 | the value at (TYPE0, VALADDR, ADDRESS) [see explanation at | |
6276 | beginning of this section]. Any necessary discriminants' values | |
4c4b4cd2 PH |
6277 | should be in DVAL, a record value; it may be NULL if the object |
6278 | at ADDR itself contains any necessary discriminant values. | |
6279 | Additionally, VALADDR and ADDRESS may also be NULL if no discriminant | |
6280 | values from the record are needed. Except in the case that DVAL, | |
6281 | VALADDR, and ADDRESS are all 0 or NULL, a variant field (unless | |
6282 | unchecked) is replaced by a particular branch of the variant. | |
6283 | ||
6284 | NOTE: the case in which DVAL and VALADDR are NULL and ADDRESS is 0 | |
6285 | is questionable and may be removed. It can arise during the | |
6286 | processing of an unconstrained-array-of-record type where all the | |
6287 | variant branches have exactly the same size. This is because in | |
6288 | such cases, the compiler does not bother to use the XVS convention | |
6289 | when encoding the record. I am currently dubious of this | |
6290 | shortcut and suspect the compiler should be altered. FIXME. */ | |
14f9c5c9 | 6291 | |
d2e4a39e | 6292 | static struct type * |
4c4b4cd2 PH |
6293 | to_fixed_record_type (struct type *type0, char *valaddr, |
6294 | CORE_ADDR address, struct value *dval) | |
14f9c5c9 | 6295 | { |
d2e4a39e | 6296 | struct type *templ_type; |
14f9c5c9 | 6297 | |
4c4b4cd2 PH |
6298 | if (TYPE_FLAGS (type0) & TYPE_FLAG_FIXED_INSTANCE) |
6299 | return type0; | |
6300 | ||
d2e4a39e | 6301 | templ_type = dynamic_template_type (type0); |
14f9c5c9 AS |
6302 | |
6303 | if (templ_type != NULL) | |
6304 | return template_to_fixed_record_type (templ_type, valaddr, address, dval); | |
4c4b4cd2 PH |
6305 | else if (variant_field_index (type0) >= 0) |
6306 | { | |
6307 | if (dval == NULL && valaddr == NULL && address == 0) | |
6308 | return type0; | |
6309 | return to_record_with_fixed_variant_part (type0, valaddr, address, | |
6310 | dval); | |
6311 | } | |
14f9c5c9 AS |
6312 | else |
6313 | { | |
4c4b4cd2 | 6314 | TYPE_FLAGS (type0) |= TYPE_FLAG_FIXED_INSTANCE; |
14f9c5c9 AS |
6315 | return type0; |
6316 | } | |
6317 | ||
6318 | } | |
6319 | ||
6320 | /* An ordinary record type (with fixed-length fields) that describes | |
6321 | the value at (VAR_TYPE0, VALADDR, ADDRESS), where VAR_TYPE0 is a | |
6322 | union type. Any necessary discriminants' values should be in DVAL, | |
6323 | a record value. That is, this routine selects the appropriate | |
6324 | branch of the union at ADDR according to the discriminant value | |
4c4b4cd2 | 6325 | indicated in the union's type name. */ |
14f9c5c9 | 6326 | |
d2e4a39e AS |
6327 | static struct type * |
6328 | to_fixed_variant_branch_type (struct type *var_type0, char *valaddr, | |
4c4b4cd2 | 6329 | CORE_ADDR address, struct value *dval) |
14f9c5c9 AS |
6330 | { |
6331 | int which; | |
d2e4a39e AS |
6332 | struct type *templ_type; |
6333 | struct type *var_type; | |
14f9c5c9 AS |
6334 | |
6335 | if (TYPE_CODE (var_type0) == TYPE_CODE_PTR) | |
6336 | var_type = TYPE_TARGET_TYPE (var_type0); | |
d2e4a39e | 6337 | else |
14f9c5c9 AS |
6338 | var_type = var_type0; |
6339 | ||
6340 | templ_type = ada_find_parallel_type (var_type, "___XVU"); | |
6341 | ||
6342 | if (templ_type != NULL) | |
6343 | var_type = templ_type; | |
6344 | ||
d2e4a39e AS |
6345 | which = |
6346 | ada_which_variant_applies (var_type, | |
4c4b4cd2 | 6347 | VALUE_TYPE (dval), VALUE_CONTENTS (dval)); |
14f9c5c9 AS |
6348 | |
6349 | if (which < 0) | |
6350 | return empty_record (TYPE_OBJFILE (var_type)); | |
6351 | else if (is_dynamic_field (var_type, which)) | |
4c4b4cd2 | 6352 | return to_fixed_record_type |
d2e4a39e AS |
6353 | (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (var_type, which)), |
6354 | valaddr, address, dval); | |
4c4b4cd2 | 6355 | else if (variant_field_index (TYPE_FIELD_TYPE (var_type, which)) >= 0) |
d2e4a39e AS |
6356 | return |
6357 | to_fixed_record_type | |
6358 | (TYPE_FIELD_TYPE (var_type, which), valaddr, address, dval); | |
14f9c5c9 AS |
6359 | else |
6360 | return TYPE_FIELD_TYPE (var_type, which); | |
6361 | } | |
6362 | ||
6363 | /* Assuming that TYPE0 is an array type describing the type of a value | |
6364 | at ADDR, and that DVAL describes a record containing any | |
6365 | discriminants used in TYPE0, returns a type for the value that | |
6366 | contains no dynamic components (that is, no components whose sizes | |
6367 | are determined by run-time quantities). Unless IGNORE_TOO_BIG is | |
6368 | true, gives an error message if the resulting type's size is over | |
4c4b4cd2 | 6369 | varsize_limit. */ |
14f9c5c9 | 6370 | |
d2e4a39e AS |
6371 | static struct type * |
6372 | to_fixed_array_type (struct type *type0, struct value *dval, | |
4c4b4cd2 | 6373 | int ignore_too_big) |
14f9c5c9 | 6374 | { |
d2e4a39e AS |
6375 | struct type *index_type_desc; |
6376 | struct type *result; | |
14f9c5c9 | 6377 | |
4c4b4cd2 PH |
6378 | if (ada_is_packed_array_type (type0) /* revisit? */ |
6379 | || (TYPE_FLAGS (type0) & TYPE_FLAG_FIXED_INSTANCE)) | |
6380 | return type0; | |
14f9c5c9 AS |
6381 | |
6382 | index_type_desc = ada_find_parallel_type (type0, "___XA"); | |
6383 | if (index_type_desc == NULL) | |
6384 | { | |
61ee279c | 6385 | struct type *elt_type0 = ada_check_typedef (TYPE_TARGET_TYPE (type0)); |
14f9c5c9 | 6386 | /* NOTE: elt_type---the fixed version of elt_type0---should never |
4c4b4cd2 PH |
6387 | depend on the contents of the array in properly constructed |
6388 | debugging data. */ | |
d2e4a39e | 6389 | struct type *elt_type = ada_to_fixed_type (elt_type0, 0, 0, dval); |
14f9c5c9 AS |
6390 | |
6391 | if (elt_type0 == elt_type) | |
4c4b4cd2 | 6392 | result = type0; |
14f9c5c9 | 6393 | else |
4c4b4cd2 PH |
6394 | result = create_array_type (alloc_type (TYPE_OBJFILE (type0)), |
6395 | elt_type, TYPE_INDEX_TYPE (type0)); | |
14f9c5c9 AS |
6396 | } |
6397 | else | |
6398 | { | |
6399 | int i; | |
6400 | struct type *elt_type0; | |
6401 | ||
6402 | elt_type0 = type0; | |
6403 | for (i = TYPE_NFIELDS (index_type_desc); i > 0; i -= 1) | |
4c4b4cd2 | 6404 | elt_type0 = TYPE_TARGET_TYPE (elt_type0); |
14f9c5c9 AS |
6405 | |
6406 | /* NOTE: result---the fixed version of elt_type0---should never | |
4c4b4cd2 PH |
6407 | depend on the contents of the array in properly constructed |
6408 | debugging data. */ | |
61ee279c | 6409 | result = ada_to_fixed_type (ada_check_typedef (elt_type0), 0, 0, dval); |
14f9c5c9 | 6410 | for (i = TYPE_NFIELDS (index_type_desc) - 1; i >= 0; i -= 1) |
4c4b4cd2 PH |
6411 | { |
6412 | struct type *range_type = | |
6413 | to_fixed_range_type (TYPE_FIELD_NAME (index_type_desc, i), | |
6414 | dval, TYPE_OBJFILE (type0)); | |
6415 | result = create_array_type (alloc_type (TYPE_OBJFILE (type0)), | |
6416 | result, range_type); | |
6417 | } | |
d2e4a39e | 6418 | if (!ignore_too_big && TYPE_LENGTH (result) > varsize_limit) |
4c4b4cd2 | 6419 | error ("array type with dynamic size is larger than varsize-limit"); |
14f9c5c9 AS |
6420 | } |
6421 | ||
4c4b4cd2 | 6422 | TYPE_FLAGS (result) |= TYPE_FLAG_FIXED_INSTANCE; |
14f9c5c9 | 6423 | return result; |
d2e4a39e | 6424 | } |
14f9c5c9 AS |
6425 | |
6426 | ||
6427 | /* A standard type (containing no dynamically sized components) | |
6428 | corresponding to TYPE for the value (TYPE, VALADDR, ADDRESS) | |
6429 | DVAL describes a record containing any discriminants used in TYPE0, | |
4c4b4cd2 PH |
6430 | and may be NULL if there are none, or if the object of type TYPE at |
6431 | ADDRESS or in VALADDR contains these discriminants. */ | |
14f9c5c9 | 6432 | |
d2e4a39e | 6433 | struct type * |
4c4b4cd2 PH |
6434 | ada_to_fixed_type (struct type *type, char *valaddr, |
6435 | CORE_ADDR address, struct value *dval) | |
14f9c5c9 | 6436 | { |
61ee279c | 6437 | type = ada_check_typedef (type); |
d2e4a39e AS |
6438 | switch (TYPE_CODE (type)) |
6439 | { | |
6440 | default: | |
14f9c5c9 | 6441 | return type; |
d2e4a39e | 6442 | case TYPE_CODE_STRUCT: |
4c4b4cd2 | 6443 | { |
76a01679 JB |
6444 | struct type *static_type = to_static_fixed_type (type); |
6445 | if (ada_is_tagged_type (static_type, 0)) | |
6446 | { | |
6447 | struct type *real_type = | |
6448 | type_from_tag (value_tag_from_contents_and_address (static_type, | |
6449 | valaddr, | |
6450 | address)); | |
6451 | if (real_type != NULL) | |
6452 | type = real_type; | |
6453 | } | |
6454 | return to_fixed_record_type (type, valaddr, address, NULL); | |
4c4b4cd2 | 6455 | } |
d2e4a39e | 6456 | case TYPE_CODE_ARRAY: |
4c4b4cd2 | 6457 | return to_fixed_array_type (type, dval, 1); |
d2e4a39e AS |
6458 | case TYPE_CODE_UNION: |
6459 | if (dval == NULL) | |
4c4b4cd2 | 6460 | return type; |
d2e4a39e | 6461 | else |
4c4b4cd2 | 6462 | return to_fixed_variant_branch_type (type, valaddr, address, dval); |
d2e4a39e | 6463 | } |
14f9c5c9 AS |
6464 | } |
6465 | ||
6466 | /* A standard (static-sized) type corresponding as well as possible to | |
4c4b4cd2 | 6467 | TYPE0, but based on no runtime data. */ |
14f9c5c9 | 6468 | |
d2e4a39e AS |
6469 | static struct type * |
6470 | to_static_fixed_type (struct type *type0) | |
14f9c5c9 | 6471 | { |
d2e4a39e | 6472 | struct type *type; |
14f9c5c9 AS |
6473 | |
6474 | if (type0 == NULL) | |
6475 | return NULL; | |
6476 | ||
4c4b4cd2 PH |
6477 | if (TYPE_FLAGS (type0) & TYPE_FLAG_FIXED_INSTANCE) |
6478 | return type0; | |
6479 | ||
61ee279c | 6480 | type0 = ada_check_typedef (type0); |
d2e4a39e | 6481 | |
14f9c5c9 AS |
6482 | switch (TYPE_CODE (type0)) |
6483 | { | |
6484 | default: | |
6485 | return type0; | |
6486 | case TYPE_CODE_STRUCT: | |
6487 | type = dynamic_template_type (type0); | |
d2e4a39e | 6488 | if (type != NULL) |
4c4b4cd2 PH |
6489 | return template_to_static_fixed_type (type); |
6490 | else | |
6491 | return template_to_static_fixed_type (type0); | |
14f9c5c9 AS |
6492 | case TYPE_CODE_UNION: |
6493 | type = ada_find_parallel_type (type0, "___XVU"); | |
6494 | if (type != NULL) | |
4c4b4cd2 PH |
6495 | return template_to_static_fixed_type (type); |
6496 | else | |
6497 | return template_to_static_fixed_type (type0); | |
14f9c5c9 AS |
6498 | } |
6499 | } | |
6500 | ||
4c4b4cd2 PH |
6501 | /* A static approximation of TYPE with all type wrappers removed. */ |
6502 | ||
d2e4a39e AS |
6503 | static struct type * |
6504 | static_unwrap_type (struct type *type) | |
14f9c5c9 AS |
6505 | { |
6506 | if (ada_is_aligner_type (type)) | |
6507 | { | |
61ee279c | 6508 | struct type *type1 = TYPE_FIELD_TYPE (ada_check_typedef (type), 0); |
14f9c5c9 | 6509 | if (ada_type_name (type1) == NULL) |
4c4b4cd2 | 6510 | TYPE_NAME (type1) = ada_type_name (type); |
14f9c5c9 AS |
6511 | |
6512 | return static_unwrap_type (type1); | |
6513 | } | |
d2e4a39e | 6514 | else |
14f9c5c9 | 6515 | { |
d2e4a39e AS |
6516 | struct type *raw_real_type = ada_get_base_type (type); |
6517 | if (raw_real_type == type) | |
4c4b4cd2 | 6518 | return type; |
14f9c5c9 | 6519 | else |
4c4b4cd2 | 6520 | return to_static_fixed_type (raw_real_type); |
14f9c5c9 AS |
6521 | } |
6522 | } | |
6523 | ||
6524 | /* In some cases, incomplete and private types require | |
4c4b4cd2 | 6525 | cross-references that are not resolved as records (for example, |
14f9c5c9 AS |
6526 | type Foo; |
6527 | type FooP is access Foo; | |
6528 | V: FooP; | |
6529 | type Foo is array ...; | |
4c4b4cd2 | 6530 | ). In these cases, since there is no mechanism for producing |
14f9c5c9 AS |
6531 | cross-references to such types, we instead substitute for FooP a |
6532 | stub enumeration type that is nowhere resolved, and whose tag is | |
4c4b4cd2 | 6533 | the name of the actual type. Call these types "non-record stubs". */ |
14f9c5c9 AS |
6534 | |
6535 | /* A type equivalent to TYPE that is not a non-record stub, if one | |
4c4b4cd2 PH |
6536 | exists, otherwise TYPE. */ |
6537 | ||
d2e4a39e | 6538 | struct type * |
61ee279c | 6539 | ada_check_typedef (struct type *type) |
14f9c5c9 AS |
6540 | { |
6541 | CHECK_TYPEDEF (type); | |
6542 | if (type == NULL || TYPE_CODE (type) != TYPE_CODE_ENUM | |
6543 | || (TYPE_FLAGS (type) & TYPE_FLAG_STUB) == 0 | |
6544 | || TYPE_TAG_NAME (type) == NULL) | |
6545 | return type; | |
d2e4a39e | 6546 | else |
14f9c5c9 | 6547 | { |
d2e4a39e AS |
6548 | char *name = TYPE_TAG_NAME (type); |
6549 | struct type *type1 = ada_find_any_type (name); | |
14f9c5c9 AS |
6550 | return (type1 == NULL) ? type : type1; |
6551 | } | |
6552 | } | |
6553 | ||
6554 | /* A value representing the data at VALADDR/ADDRESS as described by | |
6555 | type TYPE0, but with a standard (static-sized) type that correctly | |
6556 | describes it. If VAL0 is not NULL and TYPE0 already is a standard | |
6557 | type, then return VAL0 [this feature is simply to avoid redundant | |
4c4b4cd2 | 6558 | creation of struct values]. */ |
14f9c5c9 | 6559 | |
4c4b4cd2 PH |
6560 | static struct value * |
6561 | ada_to_fixed_value_create (struct type *type0, CORE_ADDR address, | |
6562 | struct value *val0) | |
14f9c5c9 | 6563 | { |
4c4b4cd2 | 6564 | struct type *type = ada_to_fixed_type (type0, 0, address, NULL); |
14f9c5c9 AS |
6565 | if (type == type0 && val0 != NULL) |
6566 | return val0; | |
d2e4a39e | 6567 | else |
4c4b4cd2 PH |
6568 | return value_from_contents_and_address (type, 0, address); |
6569 | } | |
6570 | ||
6571 | /* A value representing VAL, but with a standard (static-sized) type | |
6572 | that correctly describes it. Does not necessarily create a new | |
6573 | value. */ | |
6574 | ||
6575 | static struct value * | |
6576 | ada_to_fixed_value (struct value *val) | |
6577 | { | |
6578 | return ada_to_fixed_value_create (VALUE_TYPE (val), | |
6579 | VALUE_ADDRESS (val) + VALUE_OFFSET (val), | |
6580 | val); | |
14f9c5c9 AS |
6581 | } |
6582 | ||
4c4b4cd2 | 6583 | /* A value representing VAL, but with a standard (static-sized) type |
14f9c5c9 AS |
6584 | chosen to approximate the real type of VAL as well as possible, but |
6585 | without consulting any runtime values. For Ada dynamic-sized | |
4c4b4cd2 | 6586 | types, therefore, the type of the result is likely to be inaccurate. */ |
14f9c5c9 | 6587 | |
d2e4a39e AS |
6588 | struct value * |
6589 | ada_to_static_fixed_value (struct value *val) | |
14f9c5c9 | 6590 | { |
d2e4a39e | 6591 | struct type *type = |
14f9c5c9 AS |
6592 | to_static_fixed_type (static_unwrap_type (VALUE_TYPE (val))); |
6593 | if (type == VALUE_TYPE (val)) | |
6594 | return val; | |
6595 | else | |
4c4b4cd2 | 6596 | return coerce_unspec_val_to_type (val, type); |
14f9c5c9 | 6597 | } |
d2e4a39e | 6598 | \f |
14f9c5c9 | 6599 | |
14f9c5c9 AS |
6600 | /* Attributes */ |
6601 | ||
4c4b4cd2 PH |
6602 | /* Table mapping attribute numbers to names. |
6603 | NOTE: Keep up to date with enum ada_attribute definition in ada-lang.h. */ | |
14f9c5c9 | 6604 | |
d2e4a39e | 6605 | static const char *attribute_names[] = { |
14f9c5c9 AS |
6606 | "<?>", |
6607 | ||
d2e4a39e | 6608 | "first", |
14f9c5c9 AS |
6609 | "last", |
6610 | "length", | |
6611 | "image", | |
14f9c5c9 AS |
6612 | "max", |
6613 | "min", | |
4c4b4cd2 PH |
6614 | "modulus", |
6615 | "pos", | |
6616 | "size", | |
6617 | "tag", | |
14f9c5c9 | 6618 | "val", |
14f9c5c9 AS |
6619 | 0 |
6620 | }; | |
6621 | ||
d2e4a39e | 6622 | const char * |
4c4b4cd2 | 6623 | ada_attribute_name (enum exp_opcode n) |
14f9c5c9 | 6624 | { |
4c4b4cd2 PH |
6625 | if (n >= OP_ATR_FIRST && n <= (int) OP_ATR_VAL) |
6626 | return attribute_names[n - OP_ATR_FIRST + 1]; | |
14f9c5c9 AS |
6627 | else |
6628 | return attribute_names[0]; | |
6629 | } | |
6630 | ||
4c4b4cd2 | 6631 | /* Evaluate the 'POS attribute applied to ARG. */ |
14f9c5c9 | 6632 | |
4c4b4cd2 PH |
6633 | static LONGEST |
6634 | pos_atr (struct value *arg) | |
14f9c5c9 AS |
6635 | { |
6636 | struct type *type = VALUE_TYPE (arg); | |
6637 | ||
d2e4a39e | 6638 | if (!discrete_type_p (type)) |
14f9c5c9 AS |
6639 | error ("'POS only defined on discrete types"); |
6640 | ||
6641 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) | |
6642 | { | |
6643 | int i; | |
6644 | LONGEST v = value_as_long (arg); | |
6645 | ||
d2e4a39e | 6646 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) |
4c4b4cd2 PH |
6647 | { |
6648 | if (v == TYPE_FIELD_BITPOS (type, i)) | |
6649 | return i; | |
6650 | } | |
14f9c5c9 AS |
6651 | error ("enumeration value is invalid: can't find 'POS"); |
6652 | } | |
6653 | else | |
4c4b4cd2 PH |
6654 | return value_as_long (arg); |
6655 | } | |
6656 | ||
6657 | static struct value * | |
6658 | value_pos_atr (struct value *arg) | |
6659 | { | |
72d5681a | 6660 | return value_from_longest (builtin_type_int, pos_atr (arg)); |
14f9c5c9 AS |
6661 | } |
6662 | ||
4c4b4cd2 | 6663 | /* Evaluate the TYPE'VAL attribute applied to ARG. */ |
14f9c5c9 | 6664 | |
d2e4a39e AS |
6665 | static struct value * |
6666 | value_val_atr (struct type *type, struct value *arg) | |
14f9c5c9 | 6667 | { |
d2e4a39e | 6668 | if (!discrete_type_p (type)) |
14f9c5c9 | 6669 | error ("'VAL only defined on discrete types"); |
d2e4a39e | 6670 | if (!integer_type_p (VALUE_TYPE (arg))) |
14f9c5c9 AS |
6671 | error ("'VAL requires integral argument"); |
6672 | ||
6673 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) | |
6674 | { | |
6675 | long pos = value_as_long (arg); | |
6676 | if (pos < 0 || pos >= TYPE_NFIELDS (type)) | |
4c4b4cd2 | 6677 | error ("argument to 'VAL out of range"); |
d2e4a39e | 6678 | return value_from_longest (type, TYPE_FIELD_BITPOS (type, pos)); |
14f9c5c9 AS |
6679 | } |
6680 | else | |
6681 | return value_from_longest (type, value_as_long (arg)); | |
6682 | } | |
14f9c5c9 | 6683 | \f |
d2e4a39e | 6684 | |
4c4b4cd2 | 6685 | /* Evaluation */ |
14f9c5c9 | 6686 | |
4c4b4cd2 PH |
6687 | /* True if TYPE appears to be an Ada character type. |
6688 | [At the moment, this is true only for Character and Wide_Character; | |
6689 | It is a heuristic test that could stand improvement]. */ | |
14f9c5c9 | 6690 | |
d2e4a39e AS |
6691 | int |
6692 | ada_is_character_type (struct type *type) | |
14f9c5c9 | 6693 | { |
d2e4a39e AS |
6694 | const char *name = ada_type_name (type); |
6695 | return | |
14f9c5c9 | 6696 | name != NULL |
d2e4a39e | 6697 | && (TYPE_CODE (type) == TYPE_CODE_CHAR |
4c4b4cd2 PH |
6698 | || TYPE_CODE (type) == TYPE_CODE_INT |
6699 | || TYPE_CODE (type) == TYPE_CODE_RANGE) | |
6700 | && (strcmp (name, "character") == 0 | |
6701 | || strcmp (name, "wide_character") == 0 | |
6702 | || strcmp (name, "unsigned char") == 0); | |
14f9c5c9 AS |
6703 | } |
6704 | ||
4c4b4cd2 | 6705 | /* True if TYPE appears to be an Ada string type. */ |
14f9c5c9 AS |
6706 | |
6707 | int | |
ebf56fd3 | 6708 | ada_is_string_type (struct type *type) |
14f9c5c9 | 6709 | { |
61ee279c | 6710 | type = ada_check_typedef (type); |
d2e4a39e | 6711 | if (type != NULL |
14f9c5c9 | 6712 | && TYPE_CODE (type) != TYPE_CODE_PTR |
76a01679 JB |
6713 | && (ada_is_simple_array_type (type) |
6714 | || ada_is_array_descriptor_type (type)) | |
14f9c5c9 AS |
6715 | && ada_array_arity (type) == 1) |
6716 | { | |
6717 | struct type *elttype = ada_array_element_type (type, 1); | |
6718 | ||
6719 | return ada_is_character_type (elttype); | |
6720 | } | |
d2e4a39e | 6721 | else |
14f9c5c9 AS |
6722 | return 0; |
6723 | } | |
6724 | ||
6725 | ||
6726 | /* True if TYPE is a struct type introduced by the compiler to force the | |
6727 | alignment of a value. Such types have a single field with a | |
4c4b4cd2 | 6728 | distinctive name. */ |
14f9c5c9 AS |
6729 | |
6730 | int | |
ebf56fd3 | 6731 | ada_is_aligner_type (struct type *type) |
14f9c5c9 | 6732 | { |
61ee279c | 6733 | type = ada_check_typedef (type); |
14f9c5c9 | 6734 | return (TYPE_CODE (type) == TYPE_CODE_STRUCT |
4c4b4cd2 PH |
6735 | && TYPE_NFIELDS (type) == 1 |
6736 | && strcmp (TYPE_FIELD_NAME (type, 0), "F") == 0); | |
14f9c5c9 AS |
6737 | } |
6738 | ||
6739 | /* If there is an ___XVS-convention type parallel to SUBTYPE, return | |
4c4b4cd2 | 6740 | the parallel type. */ |
14f9c5c9 | 6741 | |
d2e4a39e AS |
6742 | struct type * |
6743 | ada_get_base_type (struct type *raw_type) | |
14f9c5c9 | 6744 | { |
d2e4a39e AS |
6745 | struct type *real_type_namer; |
6746 | struct type *raw_real_type; | |
14f9c5c9 AS |
6747 | |
6748 | if (raw_type == NULL || TYPE_CODE (raw_type) != TYPE_CODE_STRUCT) | |
6749 | return raw_type; | |
6750 | ||
6751 | real_type_namer = ada_find_parallel_type (raw_type, "___XVS"); | |
d2e4a39e | 6752 | if (real_type_namer == NULL |
14f9c5c9 AS |
6753 | || TYPE_CODE (real_type_namer) != TYPE_CODE_STRUCT |
6754 | || TYPE_NFIELDS (real_type_namer) != 1) | |
6755 | return raw_type; | |
6756 | ||
6757 | raw_real_type = ada_find_any_type (TYPE_FIELD_NAME (real_type_namer, 0)); | |
d2e4a39e | 6758 | if (raw_real_type == NULL) |
14f9c5c9 AS |
6759 | return raw_type; |
6760 | else | |
6761 | return raw_real_type; | |
d2e4a39e | 6762 | } |
14f9c5c9 | 6763 | |
4c4b4cd2 | 6764 | /* The type of value designated by TYPE, with all aligners removed. */ |
14f9c5c9 | 6765 | |
d2e4a39e AS |
6766 | struct type * |
6767 | ada_aligned_type (struct type *type) | |
14f9c5c9 AS |
6768 | { |
6769 | if (ada_is_aligner_type (type)) | |
6770 | return ada_aligned_type (TYPE_FIELD_TYPE (type, 0)); | |
6771 | else | |
6772 | return ada_get_base_type (type); | |
6773 | } | |
6774 | ||
6775 | ||
6776 | /* The address of the aligned value in an object at address VALADDR | |
4c4b4cd2 | 6777 | having type TYPE. Assumes ada_is_aligner_type (TYPE). */ |
14f9c5c9 | 6778 | |
d2e4a39e | 6779 | char * |
ebf56fd3 | 6780 | ada_aligned_value_addr (struct type *type, char *valaddr) |
14f9c5c9 | 6781 | { |
d2e4a39e | 6782 | if (ada_is_aligner_type (type)) |
14f9c5c9 | 6783 | return ada_aligned_value_addr (TYPE_FIELD_TYPE (type, 0), |
4c4b4cd2 PH |
6784 | valaddr + |
6785 | TYPE_FIELD_BITPOS (type, | |
6786 | 0) / TARGET_CHAR_BIT); | |
14f9c5c9 AS |
6787 | else |
6788 | return valaddr; | |
6789 | } | |
6790 | ||
4c4b4cd2 PH |
6791 | |
6792 | ||
14f9c5c9 | 6793 | /* The printed representation of an enumeration literal with encoded |
4c4b4cd2 | 6794 | name NAME. The value is good to the next call of ada_enum_name. */ |
d2e4a39e AS |
6795 | const char * |
6796 | ada_enum_name (const char *name) | |
14f9c5c9 | 6797 | { |
4c4b4cd2 PH |
6798 | static char *result; |
6799 | static size_t result_len = 0; | |
d2e4a39e | 6800 | char *tmp; |
14f9c5c9 | 6801 | |
4c4b4cd2 PH |
6802 | /* First, unqualify the enumeration name: |
6803 | 1. Search for the last '.' character. If we find one, then skip | |
76a01679 JB |
6804 | all the preceeding characters, the unqualified name starts |
6805 | right after that dot. | |
4c4b4cd2 | 6806 | 2. Otherwise, we may be debugging on a target where the compiler |
76a01679 JB |
6807 | translates dots into "__". Search forward for double underscores, |
6808 | but stop searching when we hit an overloading suffix, which is | |
6809 | of the form "__" followed by digits. */ | |
4c4b4cd2 | 6810 | |
c3e5cd34 PH |
6811 | tmp = strrchr (name, '.'); |
6812 | if (tmp != NULL) | |
4c4b4cd2 PH |
6813 | name = tmp + 1; |
6814 | else | |
14f9c5c9 | 6815 | { |
4c4b4cd2 PH |
6816 | while ((tmp = strstr (name, "__")) != NULL) |
6817 | { | |
6818 | if (isdigit (tmp[2])) | |
6819 | break; | |
6820 | else | |
6821 | name = tmp + 2; | |
6822 | } | |
14f9c5c9 AS |
6823 | } |
6824 | ||
6825 | if (name[0] == 'Q') | |
6826 | { | |
14f9c5c9 AS |
6827 | int v; |
6828 | if (name[1] == 'U' || name[1] == 'W') | |
4c4b4cd2 PH |
6829 | { |
6830 | if (sscanf (name + 2, "%x", &v) != 1) | |
6831 | return name; | |
6832 | } | |
14f9c5c9 | 6833 | else |
4c4b4cd2 | 6834 | return name; |
14f9c5c9 | 6835 | |
4c4b4cd2 | 6836 | GROW_VECT (result, result_len, 16); |
14f9c5c9 | 6837 | if (isascii (v) && isprint (v)) |
4c4b4cd2 | 6838 | sprintf (result, "'%c'", v); |
14f9c5c9 | 6839 | else if (name[1] == 'U') |
4c4b4cd2 | 6840 | sprintf (result, "[\"%02x\"]", v); |
14f9c5c9 | 6841 | else |
4c4b4cd2 | 6842 | sprintf (result, "[\"%04x\"]", v); |
14f9c5c9 AS |
6843 | |
6844 | return result; | |
6845 | } | |
d2e4a39e | 6846 | else |
4c4b4cd2 | 6847 | { |
c3e5cd34 PH |
6848 | tmp = strstr (name, "__"); |
6849 | if (tmp == NULL) | |
6850 | tmp = strstr (name, "$"); | |
6851 | if (tmp != NULL) | |
4c4b4cd2 PH |
6852 | { |
6853 | GROW_VECT (result, result_len, tmp - name + 1); | |
6854 | strncpy (result, name, tmp - name); | |
6855 | result[tmp - name] = '\0'; | |
6856 | return result; | |
6857 | } | |
6858 | ||
6859 | return name; | |
6860 | } | |
14f9c5c9 AS |
6861 | } |
6862 | ||
d2e4a39e | 6863 | static struct value * |
ebf56fd3 | 6864 | evaluate_subexp (struct type *expect_type, struct expression *exp, int *pos, |
4c4b4cd2 | 6865 | enum noside noside) |
14f9c5c9 | 6866 | { |
76a01679 | 6867 | return (*exp->language_defn->la_exp_desc->evaluate_exp) |
4c4b4cd2 | 6868 | (expect_type, exp, pos, noside); |
14f9c5c9 AS |
6869 | } |
6870 | ||
6871 | /* Evaluate the subexpression of EXP starting at *POS as for | |
6872 | evaluate_type, updating *POS to point just past the evaluated | |
4c4b4cd2 | 6873 | expression. */ |
14f9c5c9 | 6874 | |
d2e4a39e AS |
6875 | static struct value * |
6876 | evaluate_subexp_type (struct expression *exp, int *pos) | |
14f9c5c9 | 6877 | { |
4c4b4cd2 | 6878 | return (*exp->language_defn->la_exp_desc->evaluate_exp) |
14f9c5c9 AS |
6879 | (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); |
6880 | } | |
6881 | ||
6882 | /* If VAL is wrapped in an aligner or subtype wrapper, return the | |
4c4b4cd2 | 6883 | value it wraps. */ |
14f9c5c9 | 6884 | |
d2e4a39e AS |
6885 | static struct value * |
6886 | unwrap_value (struct value *val) | |
14f9c5c9 | 6887 | { |
61ee279c | 6888 | struct type *type = ada_check_typedef (VALUE_TYPE (val)); |
14f9c5c9 AS |
6889 | if (ada_is_aligner_type (type)) |
6890 | { | |
d2e4a39e | 6891 | struct value *v = value_struct_elt (&val, NULL, "F", |
4c4b4cd2 | 6892 | NULL, "internal structure"); |
61ee279c | 6893 | struct type *val_type = ada_check_typedef (VALUE_TYPE (v)); |
14f9c5c9 | 6894 | if (ada_type_name (val_type) == NULL) |
4c4b4cd2 | 6895 | TYPE_NAME (val_type) = ada_type_name (type); |
14f9c5c9 AS |
6896 | |
6897 | return unwrap_value (v); | |
6898 | } | |
d2e4a39e | 6899 | else |
14f9c5c9 | 6900 | { |
d2e4a39e | 6901 | struct type *raw_real_type = |
61ee279c | 6902 | ada_check_typedef (ada_get_base_type (type)); |
d2e4a39e | 6903 | |
14f9c5c9 | 6904 | if (type == raw_real_type) |
4c4b4cd2 | 6905 | return val; |
14f9c5c9 | 6906 | |
d2e4a39e | 6907 | return |
4c4b4cd2 PH |
6908 | coerce_unspec_val_to_type |
6909 | (val, ada_to_fixed_type (raw_real_type, 0, | |
6910 | VALUE_ADDRESS (val) + VALUE_OFFSET (val), | |
6911 | NULL)); | |
14f9c5c9 AS |
6912 | } |
6913 | } | |
d2e4a39e AS |
6914 | |
6915 | static struct value * | |
6916 | cast_to_fixed (struct type *type, struct value *arg) | |
14f9c5c9 AS |
6917 | { |
6918 | LONGEST val; | |
6919 | ||
6920 | if (type == VALUE_TYPE (arg)) | |
6921 | return arg; | |
6922 | else if (ada_is_fixed_point_type (VALUE_TYPE (arg))) | |
d2e4a39e | 6923 | val = ada_float_to_fixed (type, |
4c4b4cd2 PH |
6924 | ada_fixed_to_float (VALUE_TYPE (arg), |
6925 | value_as_long (arg))); | |
d2e4a39e | 6926 | else |
14f9c5c9 | 6927 | { |
d2e4a39e | 6928 | DOUBLEST argd = |
4c4b4cd2 | 6929 | value_as_double (value_cast (builtin_type_double, value_copy (arg))); |
14f9c5c9 AS |
6930 | val = ada_float_to_fixed (type, argd); |
6931 | } | |
6932 | ||
6933 | return value_from_longest (type, val); | |
6934 | } | |
6935 | ||
d2e4a39e AS |
6936 | static struct value * |
6937 | cast_from_fixed_to_double (struct value *arg) | |
14f9c5c9 AS |
6938 | { |
6939 | DOUBLEST val = ada_fixed_to_float (VALUE_TYPE (arg), | |
4c4b4cd2 | 6940 | value_as_long (arg)); |
14f9c5c9 AS |
6941 | return value_from_double (builtin_type_double, val); |
6942 | } | |
6943 | ||
4c4b4cd2 PH |
6944 | /* Coerce VAL as necessary for assignment to an lval of type TYPE, and |
6945 | return the converted value. */ | |
6946 | ||
d2e4a39e AS |
6947 | static struct value * |
6948 | coerce_for_assign (struct type *type, struct value *val) | |
14f9c5c9 | 6949 | { |
d2e4a39e | 6950 | struct type *type2 = VALUE_TYPE (val); |
14f9c5c9 AS |
6951 | if (type == type2) |
6952 | return val; | |
6953 | ||
61ee279c PH |
6954 | type2 = ada_check_typedef (type2); |
6955 | type = ada_check_typedef (type); | |
14f9c5c9 | 6956 | |
d2e4a39e AS |
6957 | if (TYPE_CODE (type2) == TYPE_CODE_PTR |
6958 | && TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
14f9c5c9 AS |
6959 | { |
6960 | val = ada_value_ind (val); | |
6961 | type2 = VALUE_TYPE (val); | |
6962 | } | |
6963 | ||
d2e4a39e | 6964 | if (TYPE_CODE (type2) == TYPE_CODE_ARRAY |
14f9c5c9 AS |
6965 | && TYPE_CODE (type) == TYPE_CODE_ARRAY) |
6966 | { | |
6967 | if (TYPE_LENGTH (type2) != TYPE_LENGTH (type) | |
4c4b4cd2 PH |
6968 | || TYPE_LENGTH (TYPE_TARGET_TYPE (type2)) |
6969 | != TYPE_LENGTH (TYPE_TARGET_TYPE (type2))) | |
6970 | error ("Incompatible types in assignment"); | |
14f9c5c9 AS |
6971 | VALUE_TYPE (val) = type; |
6972 | } | |
d2e4a39e | 6973 | return val; |
14f9c5c9 AS |
6974 | } |
6975 | ||
4c4b4cd2 PH |
6976 | static struct value * |
6977 | ada_value_binop (struct value *arg1, struct value *arg2, enum exp_opcode op) | |
6978 | { | |
6979 | struct value *val; | |
6980 | struct type *type1, *type2; | |
6981 | LONGEST v, v1, v2; | |
6982 | ||
6983 | COERCE_REF (arg1); | |
6984 | COERCE_REF (arg2); | |
61ee279c PH |
6985 | type1 = base_type (ada_check_typedef (VALUE_TYPE (arg1))); |
6986 | type2 = base_type (ada_check_typedef (VALUE_TYPE (arg2))); | |
4c4b4cd2 | 6987 | |
76a01679 JB |
6988 | if (TYPE_CODE (type1) != TYPE_CODE_INT |
6989 | || TYPE_CODE (type2) != TYPE_CODE_INT) | |
4c4b4cd2 PH |
6990 | return value_binop (arg1, arg2, op); |
6991 | ||
76a01679 | 6992 | switch (op) |
4c4b4cd2 PH |
6993 | { |
6994 | case BINOP_MOD: | |
6995 | case BINOP_DIV: | |
6996 | case BINOP_REM: | |
6997 | break; | |
6998 | default: | |
6999 | return value_binop (arg1, arg2, op); | |
7000 | } | |
7001 | ||
7002 | v2 = value_as_long (arg2); | |
7003 | if (v2 == 0) | |
7004 | error ("second operand of %s must not be zero.", op_string (op)); | |
7005 | ||
7006 | if (TYPE_UNSIGNED (type1) || op == BINOP_MOD) | |
7007 | return value_binop (arg1, arg2, op); | |
7008 | ||
7009 | v1 = value_as_long (arg1); | |
7010 | switch (op) | |
7011 | { | |
7012 | case BINOP_DIV: | |
7013 | v = v1 / v2; | |
76a01679 JB |
7014 | if (!TRUNCATION_TOWARDS_ZERO && v1 * (v1 % v2) < 0) |
7015 | v += v > 0 ? -1 : 1; | |
4c4b4cd2 PH |
7016 | break; |
7017 | case BINOP_REM: | |
7018 | v = v1 % v2; | |
76a01679 JB |
7019 | if (v * v1 < 0) |
7020 | v -= v2; | |
4c4b4cd2 PH |
7021 | break; |
7022 | default: | |
7023 | /* Should not reach this point. */ | |
7024 | v = 0; | |
7025 | } | |
7026 | ||
7027 | val = allocate_value (type1); | |
7028 | store_unsigned_integer (VALUE_CONTENTS_RAW (val), | |
76a01679 | 7029 | TYPE_LENGTH (VALUE_TYPE (val)), v); |
4c4b4cd2 PH |
7030 | return val; |
7031 | } | |
7032 | ||
7033 | static int | |
7034 | ada_value_equal (struct value *arg1, struct value *arg2) | |
7035 | { | |
76a01679 | 7036 | if (ada_is_direct_array_type (VALUE_TYPE (arg1)) |
4c4b4cd2 PH |
7037 | || ada_is_direct_array_type (VALUE_TYPE (arg2))) |
7038 | { | |
7039 | arg1 = ada_coerce_to_simple_array (arg1); | |
7040 | arg2 = ada_coerce_to_simple_array (arg2); | |
7041 | if (TYPE_CODE (VALUE_TYPE (arg1)) != TYPE_CODE_ARRAY | |
76a01679 JB |
7042 | || TYPE_CODE (VALUE_TYPE (arg2)) != TYPE_CODE_ARRAY) |
7043 | error ("Attempt to compare array with non-array"); | |
4c4b4cd2 | 7044 | /* FIXME: The following works only for types whose |
76a01679 JB |
7045 | representations use all bits (no padding or undefined bits) |
7046 | and do not have user-defined equality. */ | |
7047 | return | |
7048 | TYPE_LENGTH (VALUE_TYPE (arg1)) == TYPE_LENGTH (VALUE_TYPE (arg2)) | |
7049 | && memcmp (VALUE_CONTENTS (arg1), VALUE_CONTENTS (arg2), | |
7050 | TYPE_LENGTH (VALUE_TYPE (arg1))) == 0; | |
4c4b4cd2 PH |
7051 | } |
7052 | return value_equal (arg1, arg2); | |
7053 | } | |
7054 | ||
d2e4a39e | 7055 | struct value * |
ebf56fd3 | 7056 | ada_evaluate_subexp (struct type *expect_type, struct expression *exp, |
4c4b4cd2 | 7057 | int *pos, enum noside noside) |
14f9c5c9 AS |
7058 | { |
7059 | enum exp_opcode op; | |
14f9c5c9 AS |
7060 | int tem, tem2, tem3; |
7061 | int pc; | |
7062 | struct value *arg1 = NULL, *arg2 = NULL, *arg3; | |
7063 | struct type *type; | |
7064 | int nargs; | |
d2e4a39e | 7065 | struct value **argvec; |
14f9c5c9 | 7066 | |
d2e4a39e AS |
7067 | pc = *pos; |
7068 | *pos += 1; | |
14f9c5c9 AS |
7069 | op = exp->elts[pc].opcode; |
7070 | ||
d2e4a39e | 7071 | switch (op) |
14f9c5c9 AS |
7072 | { |
7073 | default: | |
7074 | *pos -= 1; | |
d2e4a39e | 7075 | return |
4c4b4cd2 PH |
7076 | unwrap_value (evaluate_subexp_standard |
7077 | (expect_type, exp, pos, noside)); | |
7078 | ||
7079 | case OP_STRING: | |
7080 | { | |
76a01679 JB |
7081 | struct value *result; |
7082 | *pos -= 1; | |
7083 | result = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
7084 | /* The result type will have code OP_STRING, bashed there from | |
7085 | OP_ARRAY. Bash it back. */ | |
7086 | if (TYPE_CODE (VALUE_TYPE (result)) == TYPE_CODE_STRING) | |
7087 | TYPE_CODE (VALUE_TYPE (result)) = TYPE_CODE_ARRAY; | |
7088 | return result; | |
4c4b4cd2 | 7089 | } |
14f9c5c9 AS |
7090 | |
7091 | case UNOP_CAST: | |
7092 | (*pos) += 2; | |
7093 | type = exp->elts[pc + 1].type; | |
7094 | arg1 = evaluate_subexp (type, exp, pos, noside); | |
7095 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 7096 | goto nosideret; |
61ee279c | 7097 | if (type != ada_check_typedef (VALUE_TYPE (arg1))) |
4c4b4cd2 PH |
7098 | { |
7099 | if (ada_is_fixed_point_type (type)) | |
7100 | arg1 = cast_to_fixed (type, arg1); | |
7101 | else if (ada_is_fixed_point_type (VALUE_TYPE (arg1))) | |
7102 | arg1 = value_cast (type, cast_from_fixed_to_double (arg1)); | |
7103 | else if (VALUE_LVAL (arg1) == lval_memory) | |
7104 | { | |
7105 | /* This is in case of the really obscure (and undocumented, | |
7106 | but apparently expected) case of (Foo) Bar.all, where Bar | |
7107 | is an integer constant and Foo is a dynamic-sized type. | |
7108 | If we don't do this, ARG1 will simply be relabeled with | |
7109 | TYPE. */ | |
7110 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
7111 | return value_zero (to_static_fixed_type (type), not_lval); | |
7112 | arg1 = | |
7113 | ada_to_fixed_value_create | |
7114 | (type, VALUE_ADDRESS (arg1) + VALUE_OFFSET (arg1), 0); | |
7115 | } | |
7116 | else | |
7117 | arg1 = value_cast (type, arg1); | |
7118 | } | |
14f9c5c9 AS |
7119 | return arg1; |
7120 | ||
4c4b4cd2 PH |
7121 | case UNOP_QUAL: |
7122 | (*pos) += 2; | |
7123 | type = exp->elts[pc + 1].type; | |
7124 | return ada_evaluate_subexp (type, exp, pos, noside); | |
7125 | ||
14f9c5c9 AS |
7126 | case BINOP_ASSIGN: |
7127 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7128 | arg2 = evaluate_subexp (VALUE_TYPE (arg1), exp, pos, noside); | |
7129 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) | |
4c4b4cd2 PH |
7130 | return arg1; |
7131 | if (ada_is_fixed_point_type (VALUE_TYPE (arg1))) | |
76a01679 | 7132 | arg2 = cast_to_fixed (VALUE_TYPE (arg1), arg2); |
4c4b4cd2 | 7133 | else if (ada_is_fixed_point_type (VALUE_TYPE (arg2))) |
76a01679 JB |
7134 | error |
7135 | ("Fixed-point values must be assigned to fixed-point variables"); | |
d2e4a39e | 7136 | else |
76a01679 | 7137 | arg2 = coerce_for_assign (VALUE_TYPE (arg1), arg2); |
4c4b4cd2 | 7138 | return ada_value_assign (arg1, arg2); |
14f9c5c9 AS |
7139 | |
7140 | case BINOP_ADD: | |
7141 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
7142 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
7143 | if (noside == EVAL_SKIP) | |
4c4b4cd2 PH |
7144 | goto nosideret; |
7145 | if ((ada_is_fixed_point_type (VALUE_TYPE (arg1)) | |
76a01679 JB |
7146 | || ada_is_fixed_point_type (VALUE_TYPE (arg2))) |
7147 | && VALUE_TYPE (arg1) != VALUE_TYPE (arg2)) | |
7148 | error ("Operands of fixed-point addition must have the same type"); | |
4c4b4cd2 | 7149 | return value_cast (VALUE_TYPE (arg1), value_add (arg1, arg2)); |
14f9c5c9 AS |
7150 | |
7151 | case BINOP_SUB: | |
7152 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
7153 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
7154 | if (noside == EVAL_SKIP) | |
4c4b4cd2 PH |
7155 | goto nosideret; |
7156 | if ((ada_is_fixed_point_type (VALUE_TYPE (arg1)) | |
76a01679 JB |
7157 | || ada_is_fixed_point_type (VALUE_TYPE (arg2))) |
7158 | && VALUE_TYPE (arg1) != VALUE_TYPE (arg2)) | |
7159 | error ("Operands of fixed-point subtraction must have the same type"); | |
4c4b4cd2 | 7160 | return value_cast (VALUE_TYPE (arg1), value_sub (arg1, arg2)); |
14f9c5c9 AS |
7161 | |
7162 | case BINOP_MUL: | |
7163 | case BINOP_DIV: | |
7164 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7165 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7166 | if (noside == EVAL_SKIP) | |
4c4b4cd2 PH |
7167 | goto nosideret; |
7168 | else if (noside == EVAL_AVOID_SIDE_EFFECTS | |
76a01679 | 7169 | && (op == BINOP_DIV || op == BINOP_REM || op == BINOP_MOD)) |
4c4b4cd2 | 7170 | return value_zero (VALUE_TYPE (arg1), not_lval); |
14f9c5c9 | 7171 | else |
4c4b4cd2 PH |
7172 | { |
7173 | if (ada_is_fixed_point_type (VALUE_TYPE (arg1))) | |
7174 | arg1 = cast_from_fixed_to_double (arg1); | |
7175 | if (ada_is_fixed_point_type (VALUE_TYPE (arg2))) | |
7176 | arg2 = cast_from_fixed_to_double (arg2); | |
7177 | return ada_value_binop (arg1, arg2, op); | |
7178 | } | |
7179 | ||
7180 | case BINOP_REM: | |
7181 | case BINOP_MOD: | |
7182 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7183 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7184 | if (noside == EVAL_SKIP) | |
76a01679 | 7185 | goto nosideret; |
4c4b4cd2 | 7186 | else if (noside == EVAL_AVOID_SIDE_EFFECTS |
76a01679 JB |
7187 | && (op == BINOP_DIV || op == BINOP_REM || op == BINOP_MOD)) |
7188 | return value_zero (VALUE_TYPE (arg1), not_lval); | |
14f9c5c9 | 7189 | else |
76a01679 | 7190 | return ada_value_binop (arg1, arg2, op); |
14f9c5c9 | 7191 | |
4c4b4cd2 PH |
7192 | case BINOP_EQUAL: |
7193 | case BINOP_NOTEQUAL: | |
14f9c5c9 | 7194 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
4c4b4cd2 | 7195 | arg2 = evaluate_subexp (VALUE_TYPE (arg1), exp, pos, noside); |
14f9c5c9 | 7196 | if (noside == EVAL_SKIP) |
76a01679 | 7197 | goto nosideret; |
4c4b4cd2 | 7198 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 7199 | tem = 0; |
4c4b4cd2 | 7200 | else |
76a01679 | 7201 | tem = ada_value_equal (arg1, arg2); |
4c4b4cd2 | 7202 | if (op == BINOP_NOTEQUAL) |
76a01679 | 7203 | tem = !tem; |
4c4b4cd2 PH |
7204 | return value_from_longest (LA_BOOL_TYPE, (LONGEST) tem); |
7205 | ||
7206 | case UNOP_NEG: | |
7207 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7208 | if (noside == EVAL_SKIP) | |
7209 | goto nosideret; | |
14f9c5c9 | 7210 | else if (ada_is_fixed_point_type (VALUE_TYPE (arg1))) |
4c4b4cd2 | 7211 | return value_cast (VALUE_TYPE (arg1), value_neg (arg1)); |
14f9c5c9 | 7212 | else |
4c4b4cd2 PH |
7213 | return value_neg (arg1); |
7214 | ||
14f9c5c9 AS |
7215 | case OP_VAR_VALUE: |
7216 | *pos -= 1; | |
7217 | if (noside == EVAL_SKIP) | |
4c4b4cd2 PH |
7218 | { |
7219 | *pos += 4; | |
7220 | goto nosideret; | |
7221 | } | |
7222 | else if (SYMBOL_DOMAIN (exp->elts[pc + 2].symbol) == UNDEF_DOMAIN) | |
76a01679 JB |
7223 | /* Only encountered when an unresolved symbol occurs in a |
7224 | context other than a function call, in which case, it is | |
7225 | illegal. */ | |
4c4b4cd2 PH |
7226 | error ("Unexpected unresolved symbol, %s, during evaluation", |
7227 | SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol)); | |
14f9c5c9 | 7228 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 PH |
7229 | { |
7230 | *pos += 4; | |
7231 | return value_zero | |
7232 | (to_static_fixed_type | |
7233 | (static_unwrap_type (SYMBOL_TYPE (exp->elts[pc + 2].symbol))), | |
7234 | not_lval); | |
7235 | } | |
d2e4a39e | 7236 | else |
4c4b4cd2 PH |
7237 | { |
7238 | arg1 = | |
7239 | unwrap_value (evaluate_subexp_standard | |
7240 | (expect_type, exp, pos, noside)); | |
7241 | return ada_to_fixed_value (arg1); | |
7242 | } | |
7243 | ||
7244 | case OP_FUNCALL: | |
7245 | (*pos) += 2; | |
7246 | ||
7247 | /* Allocate arg vector, including space for the function to be | |
7248 | called in argvec[0] and a terminating NULL. */ | |
7249 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
7250 | argvec = | |
7251 | (struct value **) alloca (sizeof (struct value *) * (nargs + 2)); | |
7252 | ||
7253 | if (exp->elts[*pos].opcode == OP_VAR_VALUE | |
76a01679 | 7254 | && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN) |
4c4b4cd2 PH |
7255 | error ("Unexpected unresolved symbol, %s, during evaluation", |
7256 | SYMBOL_PRINT_NAME (exp->elts[pc + 5].symbol)); | |
7257 | else | |
7258 | { | |
7259 | for (tem = 0; tem <= nargs; tem += 1) | |
7260 | argvec[tem] = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7261 | argvec[tem] = 0; | |
7262 | ||
7263 | if (noside == EVAL_SKIP) | |
7264 | goto nosideret; | |
7265 | } | |
7266 | ||
7267 | if (ada_is_packed_array_type (desc_base_type (VALUE_TYPE (argvec[0])))) | |
7268 | argvec[0] = ada_coerce_to_simple_array (argvec[0]); | |
7269 | else if (TYPE_CODE (VALUE_TYPE (argvec[0])) == TYPE_CODE_REF | |
76a01679 JB |
7270 | || (TYPE_CODE (VALUE_TYPE (argvec[0])) == TYPE_CODE_ARRAY |
7271 | && VALUE_LVAL (argvec[0]) == lval_memory)) | |
4c4b4cd2 PH |
7272 | argvec[0] = value_addr (argvec[0]); |
7273 | ||
61ee279c | 7274 | type = ada_check_typedef (VALUE_TYPE (argvec[0])); |
4c4b4cd2 PH |
7275 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
7276 | { | |
61ee279c | 7277 | switch (TYPE_CODE (ada_check_typedef (TYPE_TARGET_TYPE (type)))) |
4c4b4cd2 PH |
7278 | { |
7279 | case TYPE_CODE_FUNC: | |
61ee279c | 7280 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
4c4b4cd2 PH |
7281 | break; |
7282 | case TYPE_CODE_ARRAY: | |
7283 | break; | |
7284 | case TYPE_CODE_STRUCT: | |
7285 | if (noside != EVAL_AVOID_SIDE_EFFECTS) | |
7286 | argvec[0] = ada_value_ind (argvec[0]); | |
61ee279c | 7287 | type = ada_check_typedef (TYPE_TARGET_TYPE (type)); |
4c4b4cd2 PH |
7288 | break; |
7289 | default: | |
7290 | error ("cannot subscript or call something of type `%s'", | |
7291 | ada_type_name (VALUE_TYPE (argvec[0]))); | |
7292 | break; | |
7293 | } | |
7294 | } | |
7295 | ||
7296 | switch (TYPE_CODE (type)) | |
7297 | { | |
7298 | case TYPE_CODE_FUNC: | |
7299 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
7300 | return allocate_value (TYPE_TARGET_TYPE (type)); | |
7301 | return call_function_by_hand (argvec[0], nargs, argvec + 1); | |
7302 | case TYPE_CODE_STRUCT: | |
7303 | { | |
7304 | int arity; | |
7305 | ||
4c4b4cd2 PH |
7306 | arity = ada_array_arity (type); |
7307 | type = ada_array_element_type (type, nargs); | |
7308 | if (type == NULL) | |
7309 | error ("cannot subscript or call a record"); | |
7310 | if (arity != nargs) | |
7311 | error ("wrong number of subscripts; expecting %d", arity); | |
7312 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
7313 | return allocate_value (ada_aligned_type (type)); | |
7314 | return | |
7315 | unwrap_value (ada_value_subscript | |
7316 | (argvec[0], nargs, argvec + 1)); | |
7317 | } | |
7318 | case TYPE_CODE_ARRAY: | |
7319 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
7320 | { | |
7321 | type = ada_array_element_type (type, nargs); | |
7322 | if (type == NULL) | |
7323 | error ("element type of array unknown"); | |
7324 | else | |
7325 | return allocate_value (ada_aligned_type (type)); | |
7326 | } | |
7327 | return | |
7328 | unwrap_value (ada_value_subscript | |
7329 | (ada_coerce_to_simple_array (argvec[0]), | |
7330 | nargs, argvec + 1)); | |
7331 | case TYPE_CODE_PTR: /* Pointer to array */ | |
7332 | type = to_fixed_array_type (TYPE_TARGET_TYPE (type), NULL, 1); | |
7333 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
7334 | { | |
7335 | type = ada_array_element_type (type, nargs); | |
7336 | if (type == NULL) | |
7337 | error ("element type of array unknown"); | |
7338 | else | |
7339 | return allocate_value (ada_aligned_type (type)); | |
7340 | } | |
7341 | return | |
7342 | unwrap_value (ada_value_ptr_subscript (argvec[0], type, | |
7343 | nargs, argvec + 1)); | |
7344 | ||
7345 | default: | |
7346 | error ("Internal error in evaluate_subexp"); | |
7347 | } | |
7348 | ||
7349 | case TERNOP_SLICE: | |
7350 | { | |
7351 | struct value *array = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7352 | struct value *low_bound_val = | |
7353 | evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7354 | LONGEST low_bound = pos_atr (low_bound_val); | |
7355 | LONGEST high_bound | |
7356 | = pos_atr (evaluate_subexp (NULL_TYPE, exp, pos, noside)); | |
963a6417 | 7357 | |
4c4b4cd2 PH |
7358 | if (noside == EVAL_SKIP) |
7359 | goto nosideret; | |
7360 | ||
4c4b4cd2 PH |
7361 | /* If this is a reference to an aligner type, then remove all |
7362 | the aligners. */ | |
7363 | if (TYPE_CODE (VALUE_TYPE (array)) == TYPE_CODE_REF | |
7364 | && ada_is_aligner_type (TYPE_TARGET_TYPE (VALUE_TYPE (array)))) | |
7365 | TYPE_TARGET_TYPE (VALUE_TYPE (array)) = | |
7366 | ada_aligned_type (TYPE_TARGET_TYPE (VALUE_TYPE (array))); | |
7367 | ||
76a01679 JB |
7368 | if (ada_is_packed_array_type (VALUE_TYPE (array))) |
7369 | error ("cannot slice a packed array"); | |
4c4b4cd2 PH |
7370 | |
7371 | /* If this is a reference to an array or an array lvalue, | |
7372 | convert to a pointer. */ | |
7373 | if (TYPE_CODE (VALUE_TYPE (array)) == TYPE_CODE_REF | |
7374 | || (TYPE_CODE (VALUE_TYPE (array)) == TYPE_CODE_ARRAY | |
7375 | && VALUE_LVAL (array) == lval_memory)) | |
7376 | array = value_addr (array); | |
7377 | ||
1265e4aa | 7378 | if (noside == EVAL_AVOID_SIDE_EFFECTS |
61ee279c PH |
7379 | && ada_is_array_descriptor_type (ada_check_typedef |
7380 | (VALUE_TYPE (array)))) | |
0b5d8877 | 7381 | return empty_array (ada_type_of_array (array, 0), low_bound); |
4c4b4cd2 PH |
7382 | |
7383 | array = ada_coerce_to_simple_array_ptr (array); | |
7384 | ||
4c4b4cd2 PH |
7385 | if (TYPE_CODE (VALUE_TYPE (array)) == TYPE_CODE_PTR) |
7386 | { | |
0b5d8877 | 7387 | if (high_bound < low_bound || noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 PH |
7388 | return empty_array (TYPE_TARGET_TYPE (VALUE_TYPE (array)), |
7389 | low_bound); | |
7390 | else | |
7391 | { | |
7392 | struct type *arr_type0 = | |
7393 | to_fixed_array_type (TYPE_TARGET_TYPE (VALUE_TYPE (array)), | |
7394 | NULL, 1); | |
0b5d8877 | 7395 | return ada_value_slice_ptr (array, arr_type0, |
6c038f32 PH |
7396 | (int) low_bound, |
7397 | (int) high_bound); | |
4c4b4cd2 PH |
7398 | } |
7399 | } | |
7400 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
7401 | return array; | |
7402 | else if (high_bound < low_bound) | |
7403 | return empty_array (VALUE_TYPE (array), low_bound); | |
7404 | else | |
0b5d8877 | 7405 | return ada_value_slice (array, (int) low_bound, (int) high_bound); |
4c4b4cd2 | 7406 | } |
14f9c5c9 | 7407 | |
4c4b4cd2 PH |
7408 | case UNOP_IN_RANGE: |
7409 | (*pos) += 2; | |
7410 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7411 | type = exp->elts[pc + 1].type; | |
14f9c5c9 | 7412 | |
14f9c5c9 | 7413 | if (noside == EVAL_SKIP) |
4c4b4cd2 | 7414 | goto nosideret; |
14f9c5c9 | 7415 | |
4c4b4cd2 PH |
7416 | switch (TYPE_CODE (type)) |
7417 | { | |
7418 | default: | |
7419 | lim_warning ("Membership test incompletely implemented; " | |
7420 | "always returns true", 0); | |
7421 | return value_from_longest (builtin_type_int, (LONGEST) 1); | |
7422 | ||
7423 | case TYPE_CODE_RANGE: | |
76a01679 | 7424 | arg2 = value_from_longest (builtin_type_int, TYPE_LOW_BOUND (type)); |
4c4b4cd2 PH |
7425 | arg3 = value_from_longest (builtin_type_int, |
7426 | TYPE_HIGH_BOUND (type)); | |
7427 | return | |
7428 | value_from_longest (builtin_type_int, | |
7429 | (value_less (arg1, arg3) | |
7430 | || value_equal (arg1, arg3)) | |
7431 | && (value_less (arg2, arg1) | |
7432 | || value_equal (arg2, arg1))); | |
7433 | } | |
7434 | ||
7435 | case BINOP_IN_BOUNDS: | |
14f9c5c9 | 7436 | (*pos) += 2; |
4c4b4cd2 PH |
7437 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
7438 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
14f9c5c9 | 7439 | |
4c4b4cd2 PH |
7440 | if (noside == EVAL_SKIP) |
7441 | goto nosideret; | |
14f9c5c9 | 7442 | |
4c4b4cd2 PH |
7443 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
7444 | return value_zero (builtin_type_int, not_lval); | |
14f9c5c9 | 7445 | |
4c4b4cd2 | 7446 | tem = longest_to_int (exp->elts[pc + 1].longconst); |
14f9c5c9 | 7447 | |
4c4b4cd2 PH |
7448 | if (tem < 1 || tem > ada_array_arity (VALUE_TYPE (arg2))) |
7449 | error ("invalid dimension number to '%s", "range"); | |
14f9c5c9 | 7450 | |
4c4b4cd2 PH |
7451 | arg3 = ada_array_bound (arg2, tem, 1); |
7452 | arg2 = ada_array_bound (arg2, tem, 0); | |
d2e4a39e | 7453 | |
4c4b4cd2 PH |
7454 | return |
7455 | value_from_longest (builtin_type_int, | |
7456 | (value_less (arg1, arg3) | |
7457 | || value_equal (arg1, arg3)) | |
7458 | && (value_less (arg2, arg1) | |
7459 | || value_equal (arg2, arg1))); | |
7460 | ||
7461 | case TERNOP_IN_RANGE: | |
7462 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7463 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7464 | arg3 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7465 | ||
7466 | if (noside == EVAL_SKIP) | |
7467 | goto nosideret; | |
7468 | ||
7469 | return | |
7470 | value_from_longest (builtin_type_int, | |
7471 | (value_less (arg1, arg3) | |
7472 | || value_equal (arg1, arg3)) | |
7473 | && (value_less (arg2, arg1) | |
7474 | || value_equal (arg2, arg1))); | |
7475 | ||
7476 | case OP_ATR_FIRST: | |
7477 | case OP_ATR_LAST: | |
7478 | case OP_ATR_LENGTH: | |
7479 | { | |
76a01679 JB |
7480 | struct type *type_arg; |
7481 | if (exp->elts[*pos].opcode == OP_TYPE) | |
7482 | { | |
7483 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
7484 | arg1 = NULL; | |
7485 | type_arg = exp->elts[pc + 2].type; | |
7486 | } | |
7487 | else | |
7488 | { | |
7489 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7490 | type_arg = NULL; | |
7491 | } | |
7492 | ||
7493 | if (exp->elts[*pos].opcode != OP_LONG) | |
7494 | error ("illegal operand to '%s", ada_attribute_name (op)); | |
7495 | tem = longest_to_int (exp->elts[*pos + 2].longconst); | |
7496 | *pos += 4; | |
7497 | ||
7498 | if (noside == EVAL_SKIP) | |
7499 | goto nosideret; | |
7500 | ||
7501 | if (type_arg == NULL) | |
7502 | { | |
7503 | arg1 = ada_coerce_ref (arg1); | |
7504 | ||
7505 | if (ada_is_packed_array_type (VALUE_TYPE (arg1))) | |
7506 | arg1 = ada_coerce_to_simple_array (arg1); | |
7507 | ||
7508 | if (tem < 1 || tem > ada_array_arity (VALUE_TYPE (arg1))) | |
7509 | error ("invalid dimension number to '%s", | |
7510 | ada_attribute_name (op)); | |
7511 | ||
7512 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
7513 | { | |
7514 | type = ada_index_type (VALUE_TYPE (arg1), tem); | |
7515 | if (type == NULL) | |
7516 | error | |
7517 | ("attempt to take bound of something that is not an array"); | |
7518 | return allocate_value (type); | |
7519 | } | |
7520 | ||
7521 | switch (op) | |
7522 | { | |
7523 | default: /* Should never happen. */ | |
7524 | error ("unexpected attribute encountered"); | |
7525 | case OP_ATR_FIRST: | |
7526 | return ada_array_bound (arg1, tem, 0); | |
7527 | case OP_ATR_LAST: | |
7528 | return ada_array_bound (arg1, tem, 1); | |
7529 | case OP_ATR_LENGTH: | |
7530 | return ada_array_length (arg1, tem); | |
7531 | } | |
7532 | } | |
7533 | else if (discrete_type_p (type_arg)) | |
7534 | { | |
7535 | struct type *range_type; | |
7536 | char *name = ada_type_name (type_arg); | |
7537 | range_type = NULL; | |
7538 | if (name != NULL && TYPE_CODE (type_arg) != TYPE_CODE_ENUM) | |
7539 | range_type = | |
7540 | to_fixed_range_type (name, NULL, TYPE_OBJFILE (type_arg)); | |
7541 | if (range_type == NULL) | |
7542 | range_type = type_arg; | |
7543 | switch (op) | |
7544 | { | |
7545 | default: | |
7546 | error ("unexpected attribute encountered"); | |
7547 | case OP_ATR_FIRST: | |
7548 | return discrete_type_low_bound (range_type); | |
7549 | case OP_ATR_LAST: | |
7550 | return discrete_type_high_bound (range_type); | |
7551 | case OP_ATR_LENGTH: | |
7552 | error ("the 'length attribute applies only to array types"); | |
7553 | } | |
7554 | } | |
7555 | else if (TYPE_CODE (type_arg) == TYPE_CODE_FLT) | |
7556 | error ("unimplemented type attribute"); | |
7557 | else | |
7558 | { | |
7559 | LONGEST low, high; | |
7560 | ||
7561 | if (ada_is_packed_array_type (type_arg)) | |
7562 | type_arg = decode_packed_array_type (type_arg); | |
7563 | ||
7564 | if (tem < 1 || tem > ada_array_arity (type_arg)) | |
7565 | error ("invalid dimension number to '%s", | |
7566 | ada_attribute_name (op)); | |
7567 | ||
7568 | type = ada_index_type (type_arg, tem); | |
7569 | if (type == NULL) | |
7570 | error | |
7571 | ("attempt to take bound of something that is not an array"); | |
7572 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
7573 | return allocate_value (type); | |
7574 | ||
7575 | switch (op) | |
7576 | { | |
7577 | default: | |
7578 | error ("unexpected attribute encountered"); | |
7579 | case OP_ATR_FIRST: | |
7580 | low = ada_array_bound_from_type (type_arg, tem, 0, &type); | |
7581 | return value_from_longest (type, low); | |
7582 | case OP_ATR_LAST: | |
7583 | high = ada_array_bound_from_type (type_arg, tem, 1, &type); | |
7584 | return value_from_longest (type, high); | |
7585 | case OP_ATR_LENGTH: | |
7586 | low = ada_array_bound_from_type (type_arg, tem, 0, &type); | |
7587 | high = ada_array_bound_from_type (type_arg, tem, 1, NULL); | |
7588 | return value_from_longest (type, high - low + 1); | |
7589 | } | |
7590 | } | |
14f9c5c9 AS |
7591 | } |
7592 | ||
4c4b4cd2 PH |
7593 | case OP_ATR_TAG: |
7594 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7595 | if (noside == EVAL_SKIP) | |
76a01679 | 7596 | goto nosideret; |
4c4b4cd2 PH |
7597 | |
7598 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
76a01679 | 7599 | return value_zero (ada_tag_type (arg1), not_lval); |
4c4b4cd2 PH |
7600 | |
7601 | return ada_value_tag (arg1); | |
7602 | ||
7603 | case OP_ATR_MIN: | |
7604 | case OP_ATR_MAX: | |
7605 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 AS |
7606 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
7607 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7608 | if (noside == EVAL_SKIP) | |
76a01679 | 7609 | goto nosideret; |
d2e4a39e | 7610 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 7611 | return value_zero (VALUE_TYPE (arg1), not_lval); |
14f9c5c9 | 7612 | else |
76a01679 JB |
7613 | return value_binop (arg1, arg2, |
7614 | op == OP_ATR_MIN ? BINOP_MIN : BINOP_MAX); | |
14f9c5c9 | 7615 | |
4c4b4cd2 PH |
7616 | case OP_ATR_MODULUS: |
7617 | { | |
76a01679 JB |
7618 | struct type *type_arg = exp->elts[pc + 2].type; |
7619 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
4c4b4cd2 | 7620 | |
76a01679 JB |
7621 | if (noside == EVAL_SKIP) |
7622 | goto nosideret; | |
4c4b4cd2 | 7623 | |
76a01679 JB |
7624 | if (!ada_is_modular_type (type_arg)) |
7625 | error ("'modulus must be applied to modular type"); | |
4c4b4cd2 | 7626 | |
76a01679 JB |
7627 | return value_from_longest (TYPE_TARGET_TYPE (type_arg), |
7628 | ada_modulus (type_arg)); | |
4c4b4cd2 PH |
7629 | } |
7630 | ||
7631 | ||
7632 | case OP_ATR_POS: | |
7633 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 AS |
7634 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
7635 | if (noside == EVAL_SKIP) | |
76a01679 | 7636 | goto nosideret; |
4c4b4cd2 | 7637 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
72d5681a | 7638 | return value_zero (builtin_type_int, not_lval); |
14f9c5c9 | 7639 | else |
76a01679 | 7640 | return value_pos_atr (arg1); |
14f9c5c9 | 7641 | |
4c4b4cd2 PH |
7642 | case OP_ATR_SIZE: |
7643 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7644 | if (noside == EVAL_SKIP) | |
76a01679 | 7645 | goto nosideret; |
4c4b4cd2 | 7646 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
72d5681a | 7647 | return value_zero (builtin_type_int, not_lval); |
4c4b4cd2 | 7648 | else |
72d5681a | 7649 | return value_from_longest (builtin_type_int, |
76a01679 JB |
7650 | TARGET_CHAR_BIT |
7651 | * TYPE_LENGTH (VALUE_TYPE (arg1))); | |
4c4b4cd2 PH |
7652 | |
7653 | case OP_ATR_VAL: | |
7654 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
14f9c5c9 | 7655 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
4c4b4cd2 | 7656 | type = exp->elts[pc + 2].type; |
14f9c5c9 | 7657 | if (noside == EVAL_SKIP) |
76a01679 | 7658 | goto nosideret; |
4c4b4cd2 | 7659 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 | 7660 | return value_zero (type, not_lval); |
4c4b4cd2 | 7661 | else |
76a01679 | 7662 | return value_val_atr (type, arg1); |
4c4b4cd2 PH |
7663 | |
7664 | case BINOP_EXP: | |
7665 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7666 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7667 | if (noside == EVAL_SKIP) | |
7668 | goto nosideret; | |
7669 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
7670 | return value_zero (VALUE_TYPE (arg1), not_lval); | |
7671 | else | |
7672 | return value_binop (arg1, arg2, op); | |
7673 | ||
7674 | case UNOP_PLUS: | |
7675 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7676 | if (noside == EVAL_SKIP) | |
7677 | goto nosideret; | |
7678 | else | |
7679 | return arg1; | |
7680 | ||
7681 | case UNOP_ABS: | |
7682 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7683 | if (noside == EVAL_SKIP) | |
7684 | goto nosideret; | |
14f9c5c9 | 7685 | if (value_less (arg1, value_zero (VALUE_TYPE (arg1), not_lval))) |
4c4b4cd2 | 7686 | return value_neg (arg1); |
14f9c5c9 | 7687 | else |
4c4b4cd2 | 7688 | return arg1; |
14f9c5c9 AS |
7689 | |
7690 | case UNOP_IND: | |
7691 | if (expect_type && TYPE_CODE (expect_type) == TYPE_CODE_PTR) | |
61ee279c | 7692 | expect_type = TYPE_TARGET_TYPE (ada_check_typedef (expect_type)); |
14f9c5c9 AS |
7693 | arg1 = evaluate_subexp (expect_type, exp, pos, noside); |
7694 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 7695 | goto nosideret; |
61ee279c | 7696 | type = ada_check_typedef (VALUE_TYPE (arg1)); |
14f9c5c9 | 7697 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 PH |
7698 | { |
7699 | if (ada_is_array_descriptor_type (type)) | |
7700 | /* GDB allows dereferencing GNAT array descriptors. */ | |
7701 | { | |
7702 | struct type *arrType = ada_type_of_array (arg1, 0); | |
7703 | if (arrType == NULL) | |
7704 | error ("Attempt to dereference null array pointer."); | |
7705 | return value_at_lazy (arrType, 0, NULL); | |
7706 | } | |
7707 | else if (TYPE_CODE (type) == TYPE_CODE_PTR | |
7708 | || TYPE_CODE (type) == TYPE_CODE_REF | |
7709 | /* In C you can dereference an array to get the 1st elt. */ | |
7710 | || TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
7711 | return | |
7712 | value_zero | |
7713 | (to_static_fixed_type | |
7714 | (ada_aligned_type (check_typedef (TYPE_TARGET_TYPE (type)))), | |
7715 | lval_memory); | |
7716 | else if (TYPE_CODE (type) == TYPE_CODE_INT) | |
7717 | /* GDB allows dereferencing an int. */ | |
7718 | return value_zero (builtin_type_int, lval_memory); | |
7719 | else | |
7720 | error ("Attempt to take contents of a non-pointer value."); | |
7721 | } | |
76a01679 | 7722 | arg1 = ada_coerce_ref (arg1); /* FIXME: What is this for?? */ |
61ee279c | 7723 | type = ada_check_typedef (VALUE_TYPE (arg1)); |
d2e4a39e | 7724 | |
4c4b4cd2 PH |
7725 | if (ada_is_array_descriptor_type (type)) |
7726 | /* GDB allows dereferencing GNAT array descriptors. */ | |
7727 | return ada_coerce_to_simple_array (arg1); | |
14f9c5c9 | 7728 | else |
4c4b4cd2 | 7729 | return ada_value_ind (arg1); |
14f9c5c9 AS |
7730 | |
7731 | case STRUCTOP_STRUCT: | |
7732 | tem = longest_to_int (exp->elts[pc + 1].longconst); | |
7733 | (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); | |
7734 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
7735 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 7736 | goto nosideret; |
14f9c5c9 | 7737 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
76a01679 JB |
7738 | { |
7739 | struct type *type1 = VALUE_TYPE (arg1); | |
7740 | if (ada_is_tagged_type (type1, 1)) | |
7741 | { | |
7742 | type = ada_lookup_struct_elt_type (type1, | |
7743 | &exp->elts[pc + 2].string, | |
7744 | 1, 1, NULL); | |
7745 | if (type == NULL) | |
7746 | /* In this case, we assume that the field COULD exist | |
7747 | in some extension of the type. Return an object of | |
7748 | "type" void, which will match any formal | |
7749 | (see ada_type_match). */ | |
7750 | return value_zero (builtin_type_void, lval_memory); | |
7751 | } | |
7752 | else | |
7753 | type = | |
7754 | ada_lookup_struct_elt_type (type1, &exp->elts[pc + 2].string, 1, | |
7755 | 0, NULL); | |
7756 | ||
7757 | return value_zero (ada_aligned_type (type), lval_memory); | |
7758 | } | |
14f9c5c9 | 7759 | else |
76a01679 JB |
7760 | return |
7761 | ada_to_fixed_value (unwrap_value | |
7762 | (ada_value_struct_elt | |
7763 | (arg1, &exp->elts[pc + 2].string, "record"))); | |
14f9c5c9 | 7764 | case OP_TYPE: |
4c4b4cd2 PH |
7765 | /* The value is not supposed to be used. This is here to make it |
7766 | easier to accommodate expressions that contain types. */ | |
14f9c5c9 AS |
7767 | (*pos) += 2; |
7768 | if (noside == EVAL_SKIP) | |
4c4b4cd2 | 7769 | goto nosideret; |
14f9c5c9 | 7770 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) |
4c4b4cd2 | 7771 | return allocate_value (builtin_type_void); |
14f9c5c9 | 7772 | else |
4c4b4cd2 | 7773 | error ("Attempt to use a type name as an expression"); |
14f9c5c9 AS |
7774 | } |
7775 | ||
7776 | nosideret: | |
7777 | return value_from_longest (builtin_type_long, (LONGEST) 1); | |
7778 | } | |
14f9c5c9 | 7779 | \f |
d2e4a39e | 7780 | |
4c4b4cd2 | 7781 | /* Fixed point */ |
14f9c5c9 AS |
7782 | |
7783 | /* If TYPE encodes an Ada fixed-point type, return the suffix of the | |
7784 | type name that encodes the 'small and 'delta information. | |
4c4b4cd2 | 7785 | Otherwise, return NULL. */ |
14f9c5c9 | 7786 | |
d2e4a39e | 7787 | static const char * |
ebf56fd3 | 7788 | fixed_type_info (struct type *type) |
14f9c5c9 | 7789 | { |
d2e4a39e | 7790 | const char *name = ada_type_name (type); |
14f9c5c9 AS |
7791 | enum type_code code = (type == NULL) ? TYPE_CODE_UNDEF : TYPE_CODE (type); |
7792 | ||
d2e4a39e AS |
7793 | if ((code == TYPE_CODE_INT || code == TYPE_CODE_RANGE) && name != NULL) |
7794 | { | |
14f9c5c9 AS |
7795 | const char *tail = strstr (name, "___XF_"); |
7796 | if (tail == NULL) | |
4c4b4cd2 | 7797 | return NULL; |
d2e4a39e | 7798 | else |
4c4b4cd2 | 7799 | return tail + 5; |
14f9c5c9 AS |
7800 | } |
7801 | else if (code == TYPE_CODE_RANGE && TYPE_TARGET_TYPE (type) != type) | |
7802 | return fixed_type_info (TYPE_TARGET_TYPE (type)); | |
7803 | else | |
7804 | return NULL; | |
7805 | } | |
7806 | ||
4c4b4cd2 | 7807 | /* Returns non-zero iff TYPE represents an Ada fixed-point type. */ |
14f9c5c9 AS |
7808 | |
7809 | int | |
ebf56fd3 | 7810 | ada_is_fixed_point_type (struct type *type) |
14f9c5c9 AS |
7811 | { |
7812 | return fixed_type_info (type) != NULL; | |
7813 | } | |
7814 | ||
4c4b4cd2 PH |
7815 | /* Return non-zero iff TYPE represents a System.Address type. */ |
7816 | ||
7817 | int | |
7818 | ada_is_system_address_type (struct type *type) | |
7819 | { | |
7820 | return (TYPE_NAME (type) | |
7821 | && strcmp (TYPE_NAME (type), "system__address") == 0); | |
7822 | } | |
7823 | ||
14f9c5c9 AS |
7824 | /* Assuming that TYPE is the representation of an Ada fixed-point |
7825 | type, return its delta, or -1 if the type is malformed and the | |
4c4b4cd2 | 7826 | delta cannot be determined. */ |
14f9c5c9 AS |
7827 | |
7828 | DOUBLEST | |
ebf56fd3 | 7829 | ada_delta (struct type *type) |
14f9c5c9 AS |
7830 | { |
7831 | const char *encoding = fixed_type_info (type); | |
7832 | long num, den; | |
7833 | ||
7834 | if (sscanf (encoding, "_%ld_%ld", &num, &den) < 2) | |
7835 | return -1.0; | |
d2e4a39e | 7836 | else |
14f9c5c9 AS |
7837 | return (DOUBLEST) num / (DOUBLEST) den; |
7838 | } | |
7839 | ||
7840 | /* Assuming that ada_is_fixed_point_type (TYPE), return the scaling | |
4c4b4cd2 | 7841 | factor ('SMALL value) associated with the type. */ |
14f9c5c9 AS |
7842 | |
7843 | static DOUBLEST | |
ebf56fd3 | 7844 | scaling_factor (struct type *type) |
14f9c5c9 AS |
7845 | { |
7846 | const char *encoding = fixed_type_info (type); | |
7847 | unsigned long num0, den0, num1, den1; | |
7848 | int n; | |
d2e4a39e | 7849 | |
14f9c5c9 AS |
7850 | n = sscanf (encoding, "_%lu_%lu_%lu_%lu", &num0, &den0, &num1, &den1); |
7851 | ||
7852 | if (n < 2) | |
7853 | return 1.0; | |
7854 | else if (n == 4) | |
7855 | return (DOUBLEST) num1 / (DOUBLEST) den1; | |
d2e4a39e | 7856 | else |
14f9c5c9 AS |
7857 | return (DOUBLEST) num0 / (DOUBLEST) den0; |
7858 | } | |
7859 | ||
7860 | ||
7861 | /* Assuming that X is the representation of a value of fixed-point | |
4c4b4cd2 | 7862 | type TYPE, return its floating-point equivalent. */ |
14f9c5c9 AS |
7863 | |
7864 | DOUBLEST | |
ebf56fd3 | 7865 | ada_fixed_to_float (struct type *type, LONGEST x) |
14f9c5c9 | 7866 | { |
d2e4a39e | 7867 | return (DOUBLEST) x *scaling_factor (type); |
14f9c5c9 AS |
7868 | } |
7869 | ||
4c4b4cd2 PH |
7870 | /* The representation of a fixed-point value of type TYPE |
7871 | corresponding to the value X. */ | |
14f9c5c9 AS |
7872 | |
7873 | LONGEST | |
ebf56fd3 | 7874 | ada_float_to_fixed (struct type *type, DOUBLEST x) |
14f9c5c9 AS |
7875 | { |
7876 | return (LONGEST) (x / scaling_factor (type) + 0.5); | |
7877 | } | |
7878 | ||
7879 | ||
4c4b4cd2 | 7880 | /* VAX floating formats */ |
14f9c5c9 AS |
7881 | |
7882 | /* Non-zero iff TYPE represents one of the special VAX floating-point | |
4c4b4cd2 PH |
7883 | types. */ |
7884 | ||
14f9c5c9 | 7885 | int |
d2e4a39e | 7886 | ada_is_vax_floating_type (struct type *type) |
14f9c5c9 | 7887 | { |
d2e4a39e | 7888 | int name_len = |
14f9c5c9 | 7889 | (ada_type_name (type) == NULL) ? 0 : strlen (ada_type_name (type)); |
d2e4a39e | 7890 | return |
14f9c5c9 | 7891 | name_len > 6 |
d2e4a39e | 7892 | && (TYPE_CODE (type) == TYPE_CODE_INT |
4c4b4cd2 PH |
7893 | || TYPE_CODE (type) == TYPE_CODE_RANGE) |
7894 | && strncmp (ada_type_name (type) + name_len - 6, "___XF", 5) == 0; | |
14f9c5c9 AS |
7895 | } |
7896 | ||
7897 | /* The type of special VAX floating-point type this is, assuming | |
4c4b4cd2 PH |
7898 | ada_is_vax_floating_point. */ |
7899 | ||
14f9c5c9 | 7900 | int |
d2e4a39e | 7901 | ada_vax_float_type_suffix (struct type *type) |
14f9c5c9 | 7902 | { |
d2e4a39e | 7903 | return ada_type_name (type)[strlen (ada_type_name (type)) - 1]; |
14f9c5c9 AS |
7904 | } |
7905 | ||
4c4b4cd2 | 7906 | /* A value representing the special debugging function that outputs |
14f9c5c9 | 7907 | VAX floating-point values of the type represented by TYPE. Assumes |
4c4b4cd2 PH |
7908 | ada_is_vax_floating_type (TYPE). */ |
7909 | ||
d2e4a39e AS |
7910 | struct value * |
7911 | ada_vax_float_print_function (struct type *type) | |
7912 | { | |
7913 | switch (ada_vax_float_type_suffix (type)) | |
7914 | { | |
7915 | case 'F': | |
7916 | return get_var_value ("DEBUG_STRING_F", 0); | |
7917 | case 'D': | |
7918 | return get_var_value ("DEBUG_STRING_D", 0); | |
7919 | case 'G': | |
7920 | return get_var_value ("DEBUG_STRING_G", 0); | |
7921 | default: | |
7922 | error ("invalid VAX floating-point type"); | |
7923 | } | |
14f9c5c9 | 7924 | } |
14f9c5c9 | 7925 | \f |
d2e4a39e | 7926 | |
4c4b4cd2 | 7927 | /* Range types */ |
14f9c5c9 AS |
7928 | |
7929 | /* Scan STR beginning at position K for a discriminant name, and | |
7930 | return the value of that discriminant field of DVAL in *PX. If | |
7931 | PNEW_K is not null, put the position of the character beyond the | |
7932 | name scanned in *PNEW_K. Return 1 if successful; return 0 and do | |
4c4b4cd2 | 7933 | not alter *PX and *PNEW_K if unsuccessful. */ |
14f9c5c9 AS |
7934 | |
7935 | static int | |
07d8f827 | 7936 | scan_discrim_bound (char *str, int k, struct value *dval, LONGEST * px, |
76a01679 | 7937 | int *pnew_k) |
14f9c5c9 AS |
7938 | { |
7939 | static char *bound_buffer = NULL; | |
7940 | static size_t bound_buffer_len = 0; | |
7941 | char *bound; | |
7942 | char *pend; | |
d2e4a39e | 7943 | struct value *bound_val; |
14f9c5c9 AS |
7944 | |
7945 | if (dval == NULL || str == NULL || str[k] == '\0') | |
7946 | return 0; | |
7947 | ||
d2e4a39e | 7948 | pend = strstr (str + k, "__"); |
14f9c5c9 AS |
7949 | if (pend == NULL) |
7950 | { | |
d2e4a39e | 7951 | bound = str + k; |
14f9c5c9 AS |
7952 | k += strlen (bound); |
7953 | } | |
d2e4a39e | 7954 | else |
14f9c5c9 | 7955 | { |
d2e4a39e | 7956 | GROW_VECT (bound_buffer, bound_buffer_len, pend - (str + k) + 1); |
14f9c5c9 | 7957 | bound = bound_buffer; |
d2e4a39e AS |
7958 | strncpy (bound_buffer, str + k, pend - (str + k)); |
7959 | bound[pend - (str + k)] = '\0'; | |
7960 | k = pend - str; | |
14f9c5c9 | 7961 | } |
d2e4a39e AS |
7962 | |
7963 | bound_val = ada_search_struct_field (bound, dval, 0, VALUE_TYPE (dval)); | |
14f9c5c9 AS |
7964 | if (bound_val == NULL) |
7965 | return 0; | |
7966 | ||
7967 | *px = value_as_long (bound_val); | |
7968 | if (pnew_k != NULL) | |
7969 | *pnew_k = k; | |
7970 | return 1; | |
7971 | } | |
7972 | ||
7973 | /* Value of variable named NAME in the current environment. If | |
7974 | no such variable found, then if ERR_MSG is null, returns 0, and | |
4c4b4cd2 PH |
7975 | otherwise causes an error with message ERR_MSG. */ |
7976 | ||
d2e4a39e AS |
7977 | static struct value * |
7978 | get_var_value (char *name, char *err_msg) | |
14f9c5c9 | 7979 | { |
4c4b4cd2 | 7980 | struct ada_symbol_info *syms; |
14f9c5c9 AS |
7981 | int nsyms; |
7982 | ||
4c4b4cd2 PH |
7983 | nsyms = ada_lookup_symbol_list (name, get_selected_block (0), VAR_DOMAIN, |
7984 | &syms); | |
14f9c5c9 AS |
7985 | |
7986 | if (nsyms != 1) | |
7987 | { | |
7988 | if (err_msg == NULL) | |
4c4b4cd2 | 7989 | return 0; |
14f9c5c9 | 7990 | else |
4c4b4cd2 | 7991 | error ("%s", err_msg); |
14f9c5c9 AS |
7992 | } |
7993 | ||
4c4b4cd2 | 7994 | return value_of_variable (syms[0].sym, syms[0].block); |
14f9c5c9 | 7995 | } |
d2e4a39e | 7996 | |
14f9c5c9 | 7997 | /* Value of integer variable named NAME in the current environment. If |
4c4b4cd2 PH |
7998 | no such variable found, returns 0, and sets *FLAG to 0. If |
7999 | successful, sets *FLAG to 1. */ | |
8000 | ||
14f9c5c9 | 8001 | LONGEST |
4c4b4cd2 | 8002 | get_int_var_value (char *name, int *flag) |
14f9c5c9 | 8003 | { |
4c4b4cd2 | 8004 | struct value *var_val = get_var_value (name, 0); |
d2e4a39e | 8005 | |
14f9c5c9 AS |
8006 | if (var_val == 0) |
8007 | { | |
8008 | if (flag != NULL) | |
4c4b4cd2 | 8009 | *flag = 0; |
14f9c5c9 AS |
8010 | return 0; |
8011 | } | |
8012 | else | |
8013 | { | |
8014 | if (flag != NULL) | |
4c4b4cd2 | 8015 | *flag = 1; |
14f9c5c9 AS |
8016 | return value_as_long (var_val); |
8017 | } | |
8018 | } | |
d2e4a39e | 8019 | |
14f9c5c9 AS |
8020 | |
8021 | /* Return a range type whose base type is that of the range type named | |
8022 | NAME in the current environment, and whose bounds are calculated | |
4c4b4cd2 | 8023 | from NAME according to the GNAT range encoding conventions. |
14f9c5c9 AS |
8024 | Extract discriminant values, if needed, from DVAL. If a new type |
8025 | must be created, allocate in OBJFILE's space. The bounds | |
8026 | information, in general, is encoded in NAME, the base type given in | |
4c4b4cd2 | 8027 | the named range type. */ |
14f9c5c9 | 8028 | |
d2e4a39e | 8029 | static struct type * |
ebf56fd3 | 8030 | to_fixed_range_type (char *name, struct value *dval, struct objfile *objfile) |
14f9c5c9 AS |
8031 | { |
8032 | struct type *raw_type = ada_find_any_type (name); | |
8033 | struct type *base_type; | |
d2e4a39e | 8034 | char *subtype_info; |
14f9c5c9 AS |
8035 | |
8036 | if (raw_type == NULL) | |
8037 | base_type = builtin_type_int; | |
8038 | else if (TYPE_CODE (raw_type) == TYPE_CODE_RANGE) | |
8039 | base_type = TYPE_TARGET_TYPE (raw_type); | |
8040 | else | |
8041 | base_type = raw_type; | |
8042 | ||
8043 | subtype_info = strstr (name, "___XD"); | |
8044 | if (subtype_info == NULL) | |
8045 | return raw_type; | |
8046 | else | |
8047 | { | |
8048 | static char *name_buf = NULL; | |
8049 | static size_t name_len = 0; | |
8050 | int prefix_len = subtype_info - name; | |
8051 | LONGEST L, U; | |
8052 | struct type *type; | |
8053 | char *bounds_str; | |
8054 | int n; | |
8055 | ||
8056 | GROW_VECT (name_buf, name_len, prefix_len + 5); | |
8057 | strncpy (name_buf, name, prefix_len); | |
8058 | name_buf[prefix_len] = '\0'; | |
8059 | ||
8060 | subtype_info += 5; | |
8061 | bounds_str = strchr (subtype_info, '_'); | |
8062 | n = 1; | |
8063 | ||
d2e4a39e | 8064 | if (*subtype_info == 'L') |
4c4b4cd2 PH |
8065 | { |
8066 | if (!ada_scan_number (bounds_str, n, &L, &n) | |
8067 | && !scan_discrim_bound (bounds_str, n, dval, &L, &n)) | |
8068 | return raw_type; | |
8069 | if (bounds_str[n] == '_') | |
8070 | n += 2; | |
8071 | else if (bounds_str[n] == '.') /* FIXME? SGI Workshop kludge. */ | |
8072 | n += 1; | |
8073 | subtype_info += 1; | |
8074 | } | |
d2e4a39e | 8075 | else |
4c4b4cd2 PH |
8076 | { |
8077 | int ok; | |
8078 | strcpy (name_buf + prefix_len, "___L"); | |
8079 | L = get_int_var_value (name_buf, &ok); | |
8080 | if (!ok) | |
8081 | { | |
8082 | lim_warning ("Unknown lower bound, using 1.", 1); | |
8083 | L = 1; | |
8084 | } | |
8085 | } | |
14f9c5c9 | 8086 | |
d2e4a39e | 8087 | if (*subtype_info == 'U') |
4c4b4cd2 PH |
8088 | { |
8089 | if (!ada_scan_number (bounds_str, n, &U, &n) | |
8090 | && !scan_discrim_bound (bounds_str, n, dval, &U, &n)) | |
8091 | return raw_type; | |
8092 | } | |
d2e4a39e | 8093 | else |
4c4b4cd2 PH |
8094 | { |
8095 | int ok; | |
8096 | strcpy (name_buf + prefix_len, "___U"); | |
8097 | U = get_int_var_value (name_buf, &ok); | |
8098 | if (!ok) | |
8099 | { | |
8100 | lim_warning ("Unknown upper bound, using %ld.", (long) L); | |
8101 | U = L; | |
8102 | } | |
8103 | } | |
14f9c5c9 | 8104 | |
d2e4a39e | 8105 | if (objfile == NULL) |
4c4b4cd2 | 8106 | objfile = TYPE_OBJFILE (base_type); |
14f9c5c9 | 8107 | type = create_range_type (alloc_type (objfile), base_type, L, U); |
d2e4a39e | 8108 | TYPE_NAME (type) = name; |
14f9c5c9 AS |
8109 | return type; |
8110 | } | |
8111 | } | |
8112 | ||
4c4b4cd2 PH |
8113 | /* True iff NAME is the name of a range type. */ |
8114 | ||
14f9c5c9 | 8115 | int |
d2e4a39e | 8116 | ada_is_range_type_name (const char *name) |
14f9c5c9 AS |
8117 | { |
8118 | return (name != NULL && strstr (name, "___XD")); | |
d2e4a39e | 8119 | } |
14f9c5c9 | 8120 | \f |
d2e4a39e | 8121 | |
4c4b4cd2 PH |
8122 | /* Modular types */ |
8123 | ||
8124 | /* True iff TYPE is an Ada modular type. */ | |
14f9c5c9 | 8125 | |
14f9c5c9 | 8126 | int |
d2e4a39e | 8127 | ada_is_modular_type (struct type *type) |
14f9c5c9 | 8128 | { |
4c4b4cd2 | 8129 | struct type *subranged_type = base_type (type); |
14f9c5c9 AS |
8130 | |
8131 | return (subranged_type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE | |
4c4b4cd2 PH |
8132 | && TYPE_CODE (subranged_type) != TYPE_CODE_ENUM |
8133 | && TYPE_UNSIGNED (subranged_type)); | |
14f9c5c9 AS |
8134 | } |
8135 | ||
4c4b4cd2 PH |
8136 | /* Assuming ada_is_modular_type (TYPE), the modulus of TYPE. */ |
8137 | ||
61ee279c | 8138 | ULONGEST |
d2e4a39e | 8139 | ada_modulus (struct type * type) |
14f9c5c9 | 8140 | { |
61ee279c | 8141 | return (ULONGEST) TYPE_HIGH_BOUND (type) + 1; |
14f9c5c9 | 8142 | } |
d2e4a39e | 8143 | \f |
4c4b4cd2 PH |
8144 | /* Operators */ |
8145 | /* Information about operators given special treatment in functions | |
8146 | below. */ | |
8147 | /* Format: OP_DEFN (<operator>, <operator length>, <# args>, <binop>). */ | |
8148 | ||
8149 | #define ADA_OPERATORS \ | |
8150 | OP_DEFN (OP_VAR_VALUE, 4, 0, 0) \ | |
8151 | OP_DEFN (BINOP_IN_BOUNDS, 3, 2, 0) \ | |
8152 | OP_DEFN (TERNOP_IN_RANGE, 1, 3, 0) \ | |
8153 | OP_DEFN (OP_ATR_FIRST, 1, 2, 0) \ | |
8154 | OP_DEFN (OP_ATR_LAST, 1, 2, 0) \ | |
8155 | OP_DEFN (OP_ATR_LENGTH, 1, 2, 0) \ | |
8156 | OP_DEFN (OP_ATR_IMAGE, 1, 2, 0) \ | |
8157 | OP_DEFN (OP_ATR_MAX, 1, 3, 0) \ | |
8158 | OP_DEFN (OP_ATR_MIN, 1, 3, 0) \ | |
8159 | OP_DEFN (OP_ATR_MODULUS, 1, 1, 0) \ | |
8160 | OP_DEFN (OP_ATR_POS, 1, 2, 0) \ | |
8161 | OP_DEFN (OP_ATR_SIZE, 1, 1, 0) \ | |
8162 | OP_DEFN (OP_ATR_TAG, 1, 1, 0) \ | |
8163 | OP_DEFN (OP_ATR_VAL, 1, 2, 0) \ | |
8164 | OP_DEFN (UNOP_QUAL, 3, 1, 0) \ | |
8165 | OP_DEFN (UNOP_IN_RANGE, 3, 1, 0) | |
8166 | ||
8167 | static void | |
8168 | ada_operator_length (struct expression *exp, int pc, int *oplenp, int *argsp) | |
8169 | { | |
8170 | switch (exp->elts[pc - 1].opcode) | |
8171 | { | |
76a01679 | 8172 | default: |
4c4b4cd2 PH |
8173 | operator_length_standard (exp, pc, oplenp, argsp); |
8174 | break; | |
8175 | ||
8176 | #define OP_DEFN(op, len, args, binop) \ | |
8177 | case op: *oplenp = len; *argsp = args; break; | |
8178 | ADA_OPERATORS; | |
8179 | #undef OP_DEFN | |
8180 | } | |
8181 | } | |
8182 | ||
8183 | static char * | |
8184 | ada_op_name (enum exp_opcode opcode) | |
8185 | { | |
8186 | switch (opcode) | |
8187 | { | |
76a01679 | 8188 | default: |
4c4b4cd2 PH |
8189 | return op_name_standard (opcode); |
8190 | #define OP_DEFN(op, len, args, binop) case op: return #op; | |
8191 | ADA_OPERATORS; | |
8192 | #undef OP_DEFN | |
8193 | } | |
8194 | } | |
8195 | ||
8196 | /* As for operator_length, but assumes PC is pointing at the first | |
8197 | element of the operator, and gives meaningful results only for the | |
8198 | Ada-specific operators. */ | |
8199 | ||
8200 | static void | |
76a01679 JB |
8201 | ada_forward_operator_length (struct expression *exp, int pc, |
8202 | int *oplenp, int *argsp) | |
4c4b4cd2 | 8203 | { |
76a01679 | 8204 | switch (exp->elts[pc].opcode) |
4c4b4cd2 PH |
8205 | { |
8206 | default: | |
8207 | *oplenp = *argsp = 0; | |
8208 | break; | |
8209 | #define OP_DEFN(op, len, args, binop) \ | |
8210 | case op: *oplenp = len; *argsp = args; break; | |
8211 | ADA_OPERATORS; | |
8212 | #undef OP_DEFN | |
8213 | } | |
8214 | } | |
8215 | ||
8216 | static int | |
8217 | ada_dump_subexp_body (struct expression *exp, struct ui_file *stream, int elt) | |
8218 | { | |
8219 | enum exp_opcode op = exp->elts[elt].opcode; | |
8220 | int oplen, nargs; | |
8221 | int pc = elt; | |
8222 | int i; | |
76a01679 | 8223 | |
4c4b4cd2 PH |
8224 | ada_forward_operator_length (exp, elt, &oplen, &nargs); |
8225 | ||
76a01679 | 8226 | switch (op) |
4c4b4cd2 | 8227 | { |
76a01679 | 8228 | /* Ada attributes ('Foo). */ |
4c4b4cd2 PH |
8229 | case OP_ATR_FIRST: |
8230 | case OP_ATR_LAST: | |
8231 | case OP_ATR_LENGTH: | |
8232 | case OP_ATR_IMAGE: | |
8233 | case OP_ATR_MAX: | |
8234 | case OP_ATR_MIN: | |
8235 | case OP_ATR_MODULUS: | |
8236 | case OP_ATR_POS: | |
8237 | case OP_ATR_SIZE: | |
8238 | case OP_ATR_TAG: | |
8239 | case OP_ATR_VAL: | |
8240 | break; | |
8241 | ||
8242 | case UNOP_IN_RANGE: | |
8243 | case UNOP_QUAL: | |
8244 | fprintf_filtered (stream, "Type @"); | |
8245 | gdb_print_host_address (exp->elts[pc + 1].type, stream); | |
8246 | fprintf_filtered (stream, " ("); | |
8247 | type_print (exp->elts[pc + 1].type, NULL, stream, 0); | |
8248 | fprintf_filtered (stream, ")"); | |
8249 | break; | |
8250 | case BINOP_IN_BOUNDS: | |
8251 | fprintf_filtered (stream, " (%d)", (int) exp->elts[pc + 2].longconst); | |
8252 | break; | |
8253 | case TERNOP_IN_RANGE: | |
8254 | break; | |
8255 | ||
8256 | default: | |
8257 | return dump_subexp_body_standard (exp, stream, elt); | |
8258 | } | |
8259 | ||
8260 | elt += oplen; | |
8261 | for (i = 0; i < nargs; i += 1) | |
8262 | elt = dump_subexp (exp, stream, elt); | |
8263 | ||
8264 | return elt; | |
8265 | } | |
8266 | ||
8267 | /* The Ada extension of print_subexp (q.v.). */ | |
8268 | ||
76a01679 JB |
8269 | static void |
8270 | ada_print_subexp (struct expression *exp, int *pos, | |
8271 | struct ui_file *stream, enum precedence prec) | |
4c4b4cd2 PH |
8272 | { |
8273 | int oplen, nargs; | |
8274 | int pc = *pos; | |
8275 | enum exp_opcode op = exp->elts[pc].opcode; | |
8276 | ||
8277 | ada_forward_operator_length (exp, pc, &oplen, &nargs); | |
8278 | ||
8279 | switch (op) | |
8280 | { | |
8281 | default: | |
8282 | print_subexp_standard (exp, pos, stream, prec); | |
8283 | return; | |
8284 | ||
8285 | case OP_VAR_VALUE: | |
8286 | *pos += oplen; | |
8287 | fputs_filtered (SYMBOL_NATURAL_NAME (exp->elts[pc + 2].symbol), stream); | |
8288 | return; | |
8289 | ||
8290 | case BINOP_IN_BOUNDS: | |
8291 | *pos += oplen; | |
8292 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
8293 | fputs_filtered (" in ", stream); | |
8294 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
8295 | fputs_filtered ("'range", stream); | |
8296 | if (exp->elts[pc + 1].longconst > 1) | |
76a01679 JB |
8297 | fprintf_filtered (stream, "(%ld)", |
8298 | (long) exp->elts[pc + 1].longconst); | |
4c4b4cd2 PH |
8299 | return; |
8300 | ||
8301 | case TERNOP_IN_RANGE: | |
8302 | *pos += oplen; | |
8303 | if (prec >= PREC_EQUAL) | |
76a01679 | 8304 | fputs_filtered ("(", stream); |
4c4b4cd2 PH |
8305 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
8306 | fputs_filtered (" in ", stream); | |
8307 | print_subexp (exp, pos, stream, PREC_EQUAL); | |
8308 | fputs_filtered (" .. ", stream); | |
8309 | print_subexp (exp, pos, stream, PREC_EQUAL); | |
8310 | if (prec >= PREC_EQUAL) | |
76a01679 JB |
8311 | fputs_filtered (")", stream); |
8312 | return; | |
4c4b4cd2 PH |
8313 | |
8314 | case OP_ATR_FIRST: | |
8315 | case OP_ATR_LAST: | |
8316 | case OP_ATR_LENGTH: | |
8317 | case OP_ATR_IMAGE: | |
8318 | case OP_ATR_MAX: | |
8319 | case OP_ATR_MIN: | |
8320 | case OP_ATR_MODULUS: | |
8321 | case OP_ATR_POS: | |
8322 | case OP_ATR_SIZE: | |
8323 | case OP_ATR_TAG: | |
8324 | case OP_ATR_VAL: | |
8325 | *pos += oplen; | |
8326 | if (exp->elts[*pos].opcode == OP_TYPE) | |
76a01679 JB |
8327 | { |
8328 | if (TYPE_CODE (exp->elts[*pos + 1].type) != TYPE_CODE_VOID) | |
8329 | LA_PRINT_TYPE (exp->elts[*pos + 1].type, "", stream, 0, 0); | |
8330 | *pos += 3; | |
8331 | } | |
4c4b4cd2 | 8332 | else |
76a01679 | 8333 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
4c4b4cd2 PH |
8334 | fprintf_filtered (stream, "'%s", ada_attribute_name (op)); |
8335 | if (nargs > 1) | |
76a01679 JB |
8336 | { |
8337 | int tem; | |
8338 | for (tem = 1; tem < nargs; tem += 1) | |
8339 | { | |
8340 | fputs_filtered ((tem == 1) ? " (" : ", ", stream); | |
8341 | print_subexp (exp, pos, stream, PREC_ABOVE_COMMA); | |
8342 | } | |
8343 | fputs_filtered (")", stream); | |
8344 | } | |
4c4b4cd2 | 8345 | return; |
14f9c5c9 | 8346 | |
4c4b4cd2 PH |
8347 | case UNOP_QUAL: |
8348 | *pos += oplen; | |
8349 | type_print (exp->elts[pc + 1].type, "", stream, 0); | |
8350 | fputs_filtered ("'(", stream); | |
8351 | print_subexp (exp, pos, stream, PREC_PREFIX); | |
8352 | fputs_filtered (")", stream); | |
8353 | return; | |
14f9c5c9 | 8354 | |
4c4b4cd2 PH |
8355 | case UNOP_IN_RANGE: |
8356 | *pos += oplen; | |
8357 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
8358 | fputs_filtered (" in ", stream); | |
8359 | LA_PRINT_TYPE (exp->elts[pc + 1].type, "", stream, 1, 0); | |
8360 | return; | |
8361 | } | |
8362 | } | |
14f9c5c9 AS |
8363 | |
8364 | /* Table mapping opcodes into strings for printing operators | |
8365 | and precedences of the operators. */ | |
8366 | ||
d2e4a39e AS |
8367 | static const struct op_print ada_op_print_tab[] = { |
8368 | {":=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
8369 | {"or else", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
8370 | {"and then", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
8371 | {"or", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
8372 | {"xor", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
8373 | {"and", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
8374 | {"=", BINOP_EQUAL, PREC_EQUAL, 0}, | |
8375 | {"/=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
8376 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
8377 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
8378 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
8379 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
8380 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
8381 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
8382 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
8383 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
8384 | {"&", BINOP_CONCAT, PREC_ADD, 0}, | |
8385 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
8386 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
8387 | {"rem", BINOP_REM, PREC_MUL, 0}, | |
8388 | {"mod", BINOP_MOD, PREC_MUL, 0}, | |
8389 | {"**", BINOP_EXP, PREC_REPEAT, 0}, | |
8390 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
8391 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
8392 | {"+", UNOP_PLUS, PREC_PREFIX, 0}, | |
8393 | {"not ", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
8394 | {"not ", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
8395 | {"abs ", UNOP_ABS, PREC_PREFIX, 0}, | |
4c4b4cd2 PH |
8396 | {".all", UNOP_IND, PREC_SUFFIX, 1}, |
8397 | {"'access", UNOP_ADDR, PREC_SUFFIX, 1}, | |
8398 | {"'size", OP_ATR_SIZE, PREC_SUFFIX, 1}, | |
d2e4a39e | 8399 | {NULL, 0, 0, 0} |
14f9c5c9 AS |
8400 | }; |
8401 | \f | |
6c038f32 | 8402 | /* Fundamental Ada Types */ |
14f9c5c9 AS |
8403 | |
8404 | /* Create a fundamental Ada type using default reasonable for the current | |
8405 | target machine. | |
8406 | ||
8407 | Some object/debugging file formats (DWARF version 1, COFF, etc) do not | |
8408 | define fundamental types such as "int" or "double". Others (stabs or | |
8409 | DWARF version 2, etc) do define fundamental types. For the formats which | |
8410 | don't provide fundamental types, gdb can create such types using this | |
8411 | function. | |
8412 | ||
8413 | FIXME: Some compilers distinguish explicitly signed integral types | |
8414 | (signed short, signed int, signed long) from "regular" integral types | |
8415 | (short, int, long) in the debugging information. There is some dis- | |
8416 | agreement as to how useful this feature is. In particular, gcc does | |
8417 | not support this. Also, only some debugging formats allow the | |
8418 | distinction to be passed on to a debugger. For now, we always just | |
8419 | use "short", "int", or "long" as the type name, for both the implicit | |
8420 | and explicitly signed types. This also makes life easier for the | |
8421 | gdb test suite since we don't have to account for the differences | |
8422 | in output depending upon what the compiler and debugging format | |
8423 | support. We will probably have to re-examine the issue when gdb | |
8424 | starts taking it's fundamental type information directly from the | |
8425 | debugging information supplied by the compiler. fnf@cygnus.com */ | |
8426 | ||
8427 | static struct type * | |
ebf56fd3 | 8428 | ada_create_fundamental_type (struct objfile *objfile, int typeid) |
14f9c5c9 AS |
8429 | { |
8430 | struct type *type = NULL; | |
8431 | ||
8432 | switch (typeid) | |
8433 | { | |
d2e4a39e AS |
8434 | default: |
8435 | /* FIXME: For now, if we are asked to produce a type not in this | |
8436 | language, create the equivalent of a C integer type with the | |
8437 | name "<?type?>". When all the dust settles from the type | |
4c4b4cd2 | 8438 | reconstruction work, this should probably become an error. */ |
d2e4a39e | 8439 | type = init_type (TYPE_CODE_INT, |
4c4b4cd2 PH |
8440 | TARGET_INT_BIT / TARGET_CHAR_BIT, |
8441 | 0, "<?type?>", objfile); | |
d2e4a39e AS |
8442 | warning ("internal error: no Ada fundamental type %d", typeid); |
8443 | break; | |
8444 | case FT_VOID: | |
8445 | type = init_type (TYPE_CODE_VOID, | |
4c4b4cd2 PH |
8446 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
8447 | 0, "void", objfile); | |
d2e4a39e AS |
8448 | break; |
8449 | case FT_CHAR: | |
8450 | type = init_type (TYPE_CODE_INT, | |
4c4b4cd2 PH |
8451 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
8452 | 0, "character", objfile); | |
d2e4a39e AS |
8453 | break; |
8454 | case FT_SIGNED_CHAR: | |
8455 | type = init_type (TYPE_CODE_INT, | |
4c4b4cd2 PH |
8456 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
8457 | 0, "signed char", objfile); | |
d2e4a39e AS |
8458 | break; |
8459 | case FT_UNSIGNED_CHAR: | |
8460 | type = init_type (TYPE_CODE_INT, | |
4c4b4cd2 PH |
8461 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
8462 | TYPE_FLAG_UNSIGNED, "unsigned char", objfile); | |
d2e4a39e AS |
8463 | break; |
8464 | case FT_SHORT: | |
8465 | type = init_type (TYPE_CODE_INT, | |
4c4b4cd2 PH |
8466 | TARGET_SHORT_BIT / TARGET_CHAR_BIT, |
8467 | 0, "short_integer", objfile); | |
d2e4a39e AS |
8468 | break; |
8469 | case FT_SIGNED_SHORT: | |
8470 | type = init_type (TYPE_CODE_INT, | |
4c4b4cd2 PH |
8471 | TARGET_SHORT_BIT / TARGET_CHAR_BIT, |
8472 | 0, "short_integer", objfile); | |
d2e4a39e AS |
8473 | break; |
8474 | case FT_UNSIGNED_SHORT: | |
8475 | type = init_type (TYPE_CODE_INT, | |
4c4b4cd2 PH |
8476 | TARGET_SHORT_BIT / TARGET_CHAR_BIT, |
8477 | TYPE_FLAG_UNSIGNED, "unsigned short", objfile); | |
d2e4a39e AS |
8478 | break; |
8479 | case FT_INTEGER: | |
8480 | type = init_type (TYPE_CODE_INT, | |
4c4b4cd2 PH |
8481 | TARGET_INT_BIT / TARGET_CHAR_BIT, |
8482 | 0, "integer", objfile); | |
d2e4a39e AS |
8483 | break; |
8484 | case FT_SIGNED_INTEGER: | |
72d5681a PH |
8485 | type = init_type (TYPE_CODE_INT, TARGET_INT_BIT / |
8486 | TARGET_CHAR_BIT, | |
8487 | 0, "integer", objfile); /* FIXME -fnf */ | |
d2e4a39e AS |
8488 | break; |
8489 | case FT_UNSIGNED_INTEGER: | |
8490 | type = init_type (TYPE_CODE_INT, | |
4c4b4cd2 PH |
8491 | TARGET_INT_BIT / TARGET_CHAR_BIT, |
8492 | TYPE_FLAG_UNSIGNED, "unsigned int", objfile); | |
d2e4a39e AS |
8493 | break; |
8494 | case FT_LONG: | |
8495 | type = init_type (TYPE_CODE_INT, | |
4c4b4cd2 PH |
8496 | TARGET_LONG_BIT / TARGET_CHAR_BIT, |
8497 | 0, "long_integer", objfile); | |
d2e4a39e AS |
8498 | break; |
8499 | case FT_SIGNED_LONG: | |
8500 | type = init_type (TYPE_CODE_INT, | |
4c4b4cd2 PH |
8501 | TARGET_LONG_BIT / TARGET_CHAR_BIT, |
8502 | 0, "long_integer", objfile); | |
d2e4a39e AS |
8503 | break; |
8504 | case FT_UNSIGNED_LONG: | |
8505 | type = init_type (TYPE_CODE_INT, | |
4c4b4cd2 PH |
8506 | TARGET_LONG_BIT / TARGET_CHAR_BIT, |
8507 | TYPE_FLAG_UNSIGNED, "unsigned long", objfile); | |
d2e4a39e AS |
8508 | break; |
8509 | case FT_LONG_LONG: | |
8510 | type = init_type (TYPE_CODE_INT, | |
4c4b4cd2 PH |
8511 | TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, |
8512 | 0, "long_long_integer", objfile); | |
d2e4a39e AS |
8513 | break; |
8514 | case FT_SIGNED_LONG_LONG: | |
8515 | type = init_type (TYPE_CODE_INT, | |
4c4b4cd2 PH |
8516 | TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, |
8517 | 0, "long_long_integer", objfile); | |
d2e4a39e AS |
8518 | break; |
8519 | case FT_UNSIGNED_LONG_LONG: | |
8520 | type = init_type (TYPE_CODE_INT, | |
4c4b4cd2 PH |
8521 | TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, |
8522 | TYPE_FLAG_UNSIGNED, "unsigned long long", objfile); | |
d2e4a39e AS |
8523 | break; |
8524 | case FT_FLOAT: | |
8525 | type = init_type (TYPE_CODE_FLT, | |
4c4b4cd2 PH |
8526 | TARGET_FLOAT_BIT / TARGET_CHAR_BIT, |
8527 | 0, "float", objfile); | |
d2e4a39e AS |
8528 | break; |
8529 | case FT_DBL_PREC_FLOAT: | |
8530 | type = init_type (TYPE_CODE_FLT, | |
4c4b4cd2 PH |
8531 | TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, |
8532 | 0, "long_float", objfile); | |
d2e4a39e AS |
8533 | break; |
8534 | case FT_EXT_PREC_FLOAT: | |
8535 | type = init_type (TYPE_CODE_FLT, | |
4c4b4cd2 PH |
8536 | TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT, |
8537 | 0, "long_long_float", objfile); | |
d2e4a39e AS |
8538 | break; |
8539 | } | |
14f9c5c9 AS |
8540 | return (type); |
8541 | } | |
8542 | ||
72d5681a PH |
8543 | enum ada_primitive_types { |
8544 | ada_primitive_type_int, | |
8545 | ada_primitive_type_long, | |
8546 | ada_primitive_type_short, | |
8547 | ada_primitive_type_char, | |
8548 | ada_primitive_type_float, | |
8549 | ada_primitive_type_double, | |
8550 | ada_primitive_type_void, | |
8551 | ada_primitive_type_long_long, | |
8552 | ada_primitive_type_long_double, | |
8553 | ada_primitive_type_natural, | |
8554 | ada_primitive_type_positive, | |
8555 | ada_primitive_type_system_address, | |
8556 | nr_ada_primitive_types | |
8557 | }; | |
6c038f32 PH |
8558 | |
8559 | static void | |
72d5681a PH |
8560 | ada_language_arch_info (struct gdbarch *current_gdbarch, |
8561 | struct language_arch_info *lai) | |
8562 | { | |
8563 | const struct builtin_type *builtin = builtin_type (current_gdbarch); | |
8564 | lai->primitive_type_vector | |
8565 | = GDBARCH_OBSTACK_CALLOC (current_gdbarch, nr_ada_primitive_types + 1, | |
8566 | struct type *); | |
8567 | lai->primitive_type_vector [ada_primitive_type_int] = | |
6c038f32 PH |
8568 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, |
8569 | 0, "integer", (struct objfile *) NULL); | |
72d5681a | 8570 | lai->primitive_type_vector [ada_primitive_type_long] = |
6c038f32 PH |
8571 | init_type (TYPE_CODE_INT, TARGET_LONG_BIT / TARGET_CHAR_BIT, |
8572 | 0, "long_integer", (struct objfile *) NULL); | |
72d5681a | 8573 | lai->primitive_type_vector [ada_primitive_type_short] = |
6c038f32 PH |
8574 | init_type (TYPE_CODE_INT, TARGET_SHORT_BIT / TARGET_CHAR_BIT, |
8575 | 0, "short_integer", (struct objfile *) NULL); | |
61ee279c PH |
8576 | lai->string_char_type = |
8577 | lai->primitive_type_vector [ada_primitive_type_char] = | |
6c038f32 PH |
8578 | init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
8579 | 0, "character", (struct objfile *) NULL); | |
72d5681a | 8580 | lai->primitive_type_vector [ada_primitive_type_float] = |
6c038f32 PH |
8581 | init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT, |
8582 | 0, "float", (struct objfile *) NULL); | |
72d5681a | 8583 | lai->primitive_type_vector [ada_primitive_type_double] = |
6c038f32 PH |
8584 | init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, |
8585 | 0, "long_float", (struct objfile *) NULL); | |
72d5681a | 8586 | lai->primitive_type_vector [ada_primitive_type_long_long] = |
6c038f32 PH |
8587 | init_type (TYPE_CODE_INT, TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, |
8588 | 0, "long_long_integer", (struct objfile *) NULL); | |
72d5681a | 8589 | lai->primitive_type_vector [ada_primitive_type_long_double] = |
6c038f32 PH |
8590 | init_type (TYPE_CODE_FLT, TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT, |
8591 | 0, "long_long_float", (struct objfile *) NULL); | |
72d5681a | 8592 | lai->primitive_type_vector [ada_primitive_type_natural] = |
6c038f32 PH |
8593 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, |
8594 | 0, "natural", (struct objfile *) NULL); | |
72d5681a | 8595 | lai->primitive_type_vector [ada_primitive_type_positive] = |
6c038f32 PH |
8596 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, |
8597 | 0, "positive", (struct objfile *) NULL); | |
72d5681a | 8598 | lai->primitive_type_vector [ada_primitive_type_void] = builtin->builtin_void; |
6c038f32 | 8599 | |
72d5681a | 8600 | lai->primitive_type_vector [ada_primitive_type_system_address] = |
6c038f32 PH |
8601 | lookup_pointer_type (init_type (TYPE_CODE_VOID, 1, 0, "void", |
8602 | (struct objfile *) NULL)); | |
72d5681a PH |
8603 | TYPE_NAME (lai->primitive_type_vector [ada_primitive_type_system_address]) |
8604 | = "system__address"; | |
6c038f32 | 8605 | } |
6c038f32 PH |
8606 | \f |
8607 | /* Language vector */ | |
8608 | ||
8609 | /* Not really used, but needed in the ada_language_defn. */ | |
8610 | ||
8611 | static void | |
8612 | emit_char (int c, struct ui_file *stream, int quoter) | |
8613 | { | |
8614 | ada_emit_char (c, stream, quoter, 1); | |
8615 | } | |
8616 | ||
8617 | static int | |
8618 | parse (void) | |
8619 | { | |
8620 | warnings_issued = 0; | |
8621 | return ada_parse (); | |
8622 | } | |
8623 | ||
8624 | static const struct exp_descriptor ada_exp_descriptor = { | |
8625 | ada_print_subexp, | |
8626 | ada_operator_length, | |
8627 | ada_op_name, | |
8628 | ada_dump_subexp_body, | |
8629 | ada_evaluate_subexp | |
8630 | }; | |
8631 | ||
8632 | const struct language_defn ada_language_defn = { | |
8633 | "ada", /* Language name */ | |
8634 | language_ada, | |
72d5681a | 8635 | NULL, |
6c038f32 PH |
8636 | range_check_off, |
8637 | type_check_off, | |
8638 | case_sensitive_on, /* Yes, Ada is case-insensitive, but | |
8639 | that's not quite what this means. */ | |
6c038f32 PH |
8640 | array_row_major, |
8641 | &ada_exp_descriptor, | |
8642 | parse, | |
8643 | ada_error, | |
8644 | resolve, | |
8645 | ada_printchar, /* Print a character constant */ | |
8646 | ada_printstr, /* Function to print string constant */ | |
8647 | emit_char, /* Function to print single char (not used) */ | |
8648 | ada_create_fundamental_type, /* Create fundamental type in this language */ | |
8649 | ada_print_type, /* Print a type using appropriate syntax */ | |
8650 | ada_val_print, /* Print a value using appropriate syntax */ | |
8651 | ada_value_print, /* Print a top-level value */ | |
8652 | NULL, /* Language specific skip_trampoline */ | |
8653 | NULL, /* value_of_this */ | |
8654 | ada_lookup_symbol_nonlocal, /* Looking up non-local symbols. */ | |
8655 | basic_lookup_transparent_type, /* lookup_transparent_type */ | |
8656 | ada_la_decode, /* Language specific symbol demangler */ | |
8657 | NULL, /* Language specific class_name_from_physname */ | |
8658 | ada_op_print_tab, /* expression operators for printing */ | |
8659 | 0, /* c-style arrays */ | |
8660 | 1, /* String lower bound */ | |
72d5681a | 8661 | NULL, |
6c038f32 | 8662 | ada_get_gdb_completer_word_break_characters, |
72d5681a | 8663 | ada_language_arch_info, |
6c038f32 PH |
8664 | LANG_MAGIC |
8665 | }; | |
8666 | ||
d2e4a39e | 8667 | void |
6c038f32 | 8668 | _initialize_ada_language (void) |
14f9c5c9 | 8669 | { |
6c038f32 PH |
8670 | add_language (&ada_language_defn); |
8671 | ||
8672 | varsize_limit = 65536; | |
6c038f32 PH |
8673 | |
8674 | obstack_init (&symbol_list_obstack); | |
8675 | ||
8676 | decoded_names_store = htab_create_alloc | |
8677 | (256, htab_hash_string, (int (*)(const void *, const void *)) streq, | |
8678 | NULL, xcalloc, xfree); | |
14f9c5c9 | 8679 | } |