1 /* Ada language support routines for GDB, the GNU debugger. Copyright (C)
3 1992, 1993, 1994, 1997, 1998, 1999, 2000, 2003, 2004, 2005, 2007
4 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA. */
26 #include "gdb_string.h"
30 #include "gdb_regex.h"
35 #include "expression.h"
36 #include "parser-defs.h"
42 #include "breakpoint.h"
45 #include "gdb_obstack.h"
47 #include "completer.h"
54 #include "dictionary.h"
55 #include "exceptions.h"
61 #ifndef ADA_RETAIN_DOTS
62 #define ADA_RETAIN_DOTS 0
65 /* Define whether or not the C operator '/' truncates towards zero for
66 differently signed operands (truncation direction is undefined in C).
67 Copied from valarith.c. */
69 #ifndef TRUNCATION_TOWARDS_ZERO
70 #define TRUNCATION_TOWARDS_ZERO ((-5 / 2) == -2)
74 static void extract_string (CORE_ADDR addr, char *buf);
76 static struct type *ada_create_fundamental_type (struct objfile *, int);
78 static void modify_general_field (char *, LONGEST, int, int);
80 static struct type *desc_base_type (struct type *);
82 static struct type *desc_bounds_type (struct type *);
84 static struct value *desc_bounds (struct value *);
86 static int fat_pntr_bounds_bitpos (struct type *);
88 static int fat_pntr_bounds_bitsize (struct type *);
90 static struct type *desc_data_type (struct type *);
92 static struct value *desc_data (struct value *);
94 static int fat_pntr_data_bitpos (struct type *);
96 static int fat_pntr_data_bitsize (struct type *);
98 static struct value *desc_one_bound (struct value *, int, int);
100 static int desc_bound_bitpos (struct type *, int, int);
102 static int desc_bound_bitsize (struct type *, int, int);
104 static struct type *desc_index_type (struct type *, int);
106 static int desc_arity (struct type *);
108 static int ada_type_match (struct type *, struct type *, int);
110 static int ada_args_match (struct symbol *, struct value **, int);
112 static struct value *ensure_lval (struct value *, CORE_ADDR *);
114 static struct value *convert_actual (struct value *, struct type *,
117 static struct value *make_array_descriptor (struct type *, struct value *,
120 static void ada_add_block_symbols (struct obstack *,
121 struct block *, const char *,
122 domain_enum, struct objfile *,
123 struct symtab *, int);
125 static int is_nonfunction (struct ada_symbol_info *, int);
127 static void add_defn_to_vec (struct obstack *, struct symbol *,
128 struct block *, struct symtab *);
130 static int num_defns_collected (struct obstack *);
132 static struct ada_symbol_info *defns_collected (struct obstack *, int);
134 static struct partial_symbol *ada_lookup_partial_symbol (struct partial_symtab
135 *, const char *, int,
138 static struct symtab *symtab_for_sym (struct symbol *);
140 static struct value *resolve_subexp (struct expression **, int *, int,
143 static void replace_operator_with_call (struct expression **, int, int, int,
144 struct symbol *, struct block *);
146 static int possible_user_operator_p (enum exp_opcode, struct value **);
148 static char *ada_op_name (enum exp_opcode);
150 static const char *ada_decoded_op_name (enum exp_opcode);
152 static int numeric_type_p (struct type *);
154 static int integer_type_p (struct type *);
156 static int scalar_type_p (struct type *);
158 static int discrete_type_p (struct type *);
160 static struct type *ada_lookup_struct_elt_type (struct type *, char *,
163 static struct value *evaluate_subexp (struct type *, struct expression *,
166 static struct value *evaluate_subexp_type (struct expression *, int *);
168 static int is_dynamic_field (struct type *, int);
170 static struct type *to_fixed_variant_branch_type (struct type *,
172 CORE_ADDR, struct value *);
174 static struct type *to_fixed_array_type (struct type *, struct value *, int);
176 static struct type *to_fixed_range_type (char *, struct value *,
179 static struct type *to_static_fixed_type (struct type *);
181 static struct value *unwrap_value (struct value *);
183 static struct type *packed_array_type (struct type *, long *);
185 static struct type *decode_packed_array_type (struct type *);
187 static struct value *decode_packed_array (struct value *);
189 static struct value *value_subscript_packed (struct value *, int,
192 static void move_bits (gdb_byte *, int, const gdb_byte *, int, int);
194 static struct value *coerce_unspec_val_to_type (struct value *,
197 static struct value *get_var_value (char *, char *);
199 static int lesseq_defined_than (struct symbol *, struct symbol *);
201 static int equiv_types (struct type *, struct type *);
203 static int is_name_suffix (const char *);
205 static int wild_match (const char *, int, const char *);
207 static struct value *ada_coerce_ref (struct value *);
209 static LONGEST pos_atr (struct value *);
211 static struct value *value_pos_atr (struct value *);
213 static struct value *value_val_atr (struct type *, struct value *);
215 static struct symbol *standard_lookup (const char *, const struct block *,
218 static struct value *ada_search_struct_field (char *, struct value *, int,
221 static struct value *ada_value_primitive_field (struct value *, int, int,
224 static int find_struct_field (char *, struct type *, int,
225 struct type **, int *, int *, int *, int *);
227 static struct value *ada_to_fixed_value_create (struct type *, CORE_ADDR,
230 static struct value *ada_to_fixed_value (struct value *);
232 static int ada_resolve_function (struct ada_symbol_info *, int,
233 struct value **, int, const char *,
236 static struct value *ada_coerce_to_simple_array (struct value *);
238 static int ada_is_direct_array_type (struct type *);
240 static void ada_language_arch_info (struct gdbarch *,
241 struct language_arch_info *);
243 static void check_size (const struct type *);
245 static struct value *ada_index_struct_field (int, struct value *, int,
248 static struct value *assign_aggregate (struct value *, struct value *,
249 struct expression *, int *, enum noside);
251 static void aggregate_assign_from_choices (struct value *, struct value *,
253 int *, LONGEST *, int *,
254 int, LONGEST, LONGEST);
256 static void aggregate_assign_positional (struct value *, struct value *,
258 int *, LONGEST *, int *, int,
262 static void aggregate_assign_others (struct value *, struct value *,
264 int *, LONGEST *, int, LONGEST, LONGEST);
267 static void add_component_interval (LONGEST, LONGEST, LONGEST *, int *, int);
270 static struct value *ada_evaluate_subexp (struct type *, struct expression *,
273 static void ada_forward_operator_length (struct expression *, int, int *,
278 /* Maximum-sized dynamic type. */
279 static unsigned int varsize_limit;
281 /* FIXME: brobecker/2003-09-17: No longer a const because it is
282 returned by a function that does not return a const char *. */
283 static char *ada_completer_word_break_characters =
285 " \t\n!@#%^&*()+=|~`}{[]\";:?/,-";
287 " \t\n!@#$%^&*()+=|~`}{[]\";:?/,-";
290 /* The name of the symbol to use to get the name of the main subprogram. */
291 static const char ADA_MAIN_PROGRAM_SYMBOL_NAME[]
292 = "__gnat_ada_main_program_name";
294 /* Limit on the number of warnings to raise per expression evaluation. */
295 static int warning_limit = 2;
297 /* Number of warning messages issued; reset to 0 by cleanups after
298 expression evaluation. */
299 static int warnings_issued = 0;
301 static const char *known_runtime_file_name_patterns[] = {
302 ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS NULL
305 static const char *known_auxiliary_function_name_patterns[] = {
306 ADA_KNOWN_AUXILIARY_FUNCTION_NAME_PATTERNS NULL
309 /* Space for allocating results of ada_lookup_symbol_list. */
310 static struct obstack symbol_list_obstack;
316 ada_get_gdb_completer_word_break_characters (void)
318 return ada_completer_word_break_characters;
321 /* Print an array element index using the Ada syntax. */
324 ada_print_array_index (struct value *index_value, struct ui_file *stream,
325 int format, enum val_prettyprint pretty)
327 LA_VALUE_PRINT (index_value, stream, format, pretty);
328 fprintf_filtered (stream, " => ");
331 /* Read the string located at ADDR from the inferior and store the
335 extract_string (CORE_ADDR addr, char *buf)
339 /* Loop, reading one byte at a time, until we reach the '\000'
340 end-of-string marker. */
343 target_read_memory (addr + char_index * sizeof (char),
344 buf + char_index * sizeof (char), sizeof (char));
347 while (buf[char_index - 1] != '\000');
350 /* Assuming VECT points to an array of *SIZE objects of size
351 ELEMENT_SIZE, grow it to contain at least MIN_SIZE objects,
352 updating *SIZE as necessary and returning the (new) array. */
355 grow_vect (void *vect, size_t *size, size_t min_size, int element_size)
357 if (*size < min_size)
360 if (*size < min_size)
362 vect = xrealloc (vect, *size * element_size);
367 /* True (non-zero) iff TARGET matches FIELD_NAME up to any trailing
368 suffix of FIELD_NAME beginning "___". */
371 field_name_match (const char *field_name, const char *target)
373 int len = strlen (target);
375 (strncmp (field_name, target, len) == 0
376 && (field_name[len] == '\0'
377 || (strncmp (field_name + len, "___", 3) == 0
378 && strcmp (field_name + strlen (field_name) - 6,
383 /* Assuming TYPE is a TYPE_CODE_STRUCT, find the field whose name matches
384 FIELD_NAME, and return its index. This function also handles fields
385 whose name have ___ suffixes because the compiler sometimes alters
386 their name by adding such a suffix to represent fields with certain
387 constraints. If the field could not be found, return a negative
388 number if MAYBE_MISSING is set. Otherwise raise an error. */
391 ada_get_field_index (const struct type *type, const char *field_name,
395 for (fieldno = 0; fieldno < TYPE_NFIELDS (type); fieldno++)
396 if (field_name_match (TYPE_FIELD_NAME (type, fieldno), field_name))
400 error (_("Unable to find field %s in struct %s. Aborting"),
401 field_name, TYPE_NAME (type));
406 /* The length of the prefix of NAME prior to any "___" suffix. */
409 ada_name_prefix_len (const char *name)
415 const char *p = strstr (name, "___");
417 return strlen (name);
423 /* Return non-zero if SUFFIX is a suffix of STR.
424 Return zero if STR is null. */
427 is_suffix (const char *str, const char *suffix)
433 len2 = strlen (suffix);
434 return (len1 >= len2 && strcmp (str + len1 - len2, suffix) == 0);
437 /* Create a value of type TYPE whose contents come from VALADDR, if it
438 is non-null, and whose memory address (in the inferior) is
442 value_from_contents_and_address (struct type *type,
443 const gdb_byte *valaddr,
446 struct value *v = allocate_value (type);
448 set_value_lazy (v, 1);
450 memcpy (value_contents_raw (v), valaddr, TYPE_LENGTH (type));
451 VALUE_ADDRESS (v) = address;
453 VALUE_LVAL (v) = lval_memory;
457 /* The contents of value VAL, treated as a value of type TYPE. The
458 result is an lval in memory if VAL is. */
460 static struct value *
461 coerce_unspec_val_to_type (struct value *val, struct type *type)
463 type = ada_check_typedef (type);
464 if (value_type (val) == type)
468 struct value *result;
470 /* Make sure that the object size is not unreasonable before
471 trying to allocate some memory for it. */
474 result = allocate_value (type);
475 VALUE_LVAL (result) = VALUE_LVAL (val);
476 set_value_bitsize (result, value_bitsize (val));
477 set_value_bitpos (result, value_bitpos (val));
478 VALUE_ADDRESS (result) = VALUE_ADDRESS (val) + value_offset (val);
480 || TYPE_LENGTH (type) > TYPE_LENGTH (value_type (val)))
481 set_value_lazy (result, 1);
483 memcpy (value_contents_raw (result), value_contents (val),
489 static const gdb_byte *
490 cond_offset_host (const gdb_byte *valaddr, long offset)
495 return valaddr + offset;
499 cond_offset_target (CORE_ADDR address, long offset)
504 return address + offset;
507 /* Issue a warning (as for the definition of warning in utils.c, but
508 with exactly one argument rather than ...), unless the limit on the
509 number of warnings has passed during the evaluation of the current
512 /* FIXME: cagney/2004-10-10: This function is mimicking the behavior
513 provided by "complaint". */
514 static void lim_warning (const char *format, ...) ATTR_FORMAT (printf, 1, 2);
517 lim_warning (const char *format, ...)
520 va_start (args, format);
522 warnings_issued += 1;
523 if (warnings_issued <= warning_limit)
524 vwarning (format, args);
529 /* Issue an error if the size of an object of type T is unreasonable,
530 i.e. if it would be a bad idea to allocate a value of this type in
534 check_size (const struct type *type)
536 if (TYPE_LENGTH (type) > varsize_limit)
537 error (_("object size is larger than varsize-limit"));
541 /* Note: would have used MAX_OF_TYPE and MIN_OF_TYPE macros from
542 gdbtypes.h, but some of the necessary definitions in that file
543 seem to have gone missing. */
545 /* Maximum value of a SIZE-byte signed integer type. */
547 max_of_size (int size)
549 LONGEST top_bit = (LONGEST) 1 << (size * 8 - 2);
550 return top_bit | (top_bit - 1);
553 /* Minimum value of a SIZE-byte signed integer type. */
555 min_of_size (int size)
557 return -max_of_size (size) - 1;
560 /* Maximum value of a SIZE-byte unsigned integer type. */
562 umax_of_size (int size)
564 ULONGEST top_bit = (ULONGEST) 1 << (size * 8 - 1);
565 return top_bit | (top_bit - 1);
568 /* Maximum value of integral type T, as a signed quantity. */
570 max_of_type (struct type *t)
572 if (TYPE_UNSIGNED (t))
573 return (LONGEST) umax_of_size (TYPE_LENGTH (t));
575 return max_of_size (TYPE_LENGTH (t));
578 /* Minimum value of integral type T, as a signed quantity. */
580 min_of_type (struct type *t)
582 if (TYPE_UNSIGNED (t))
585 return min_of_size (TYPE_LENGTH (t));
588 /* The largest value in the domain of TYPE, a discrete type, as an integer. */
589 static struct value *
590 discrete_type_high_bound (struct type *type)
592 switch (TYPE_CODE (type))
594 case TYPE_CODE_RANGE:
595 return value_from_longest (TYPE_TARGET_TYPE (type),
596 TYPE_HIGH_BOUND (type));
599 value_from_longest (type,
600 TYPE_FIELD_BITPOS (type,
601 TYPE_NFIELDS (type) - 1));
603 return value_from_longest (type, max_of_type (type));
605 error (_("Unexpected type in discrete_type_high_bound."));
609 /* The largest value in the domain of TYPE, a discrete type, as an integer. */
610 static struct value *
611 discrete_type_low_bound (struct type *type)
613 switch (TYPE_CODE (type))
615 case TYPE_CODE_RANGE:
616 return value_from_longest (TYPE_TARGET_TYPE (type),
617 TYPE_LOW_BOUND (type));
619 return value_from_longest (type, TYPE_FIELD_BITPOS (type, 0));
621 return value_from_longest (type, min_of_type (type));
623 error (_("Unexpected type in discrete_type_low_bound."));
627 /* The identity on non-range types. For range types, the underlying
628 non-range scalar type. */
631 base_type (struct type *type)
633 while (type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE)
635 if (type == TYPE_TARGET_TYPE (type) || TYPE_TARGET_TYPE (type) == NULL)
637 type = TYPE_TARGET_TYPE (type);
643 /* Language Selection */
645 /* If the main program is in Ada, return language_ada, otherwise return LANG
646 (the main program is in Ada iif the adainit symbol is found).
648 MAIN_PST is not used. */
651 ada_update_initial_language (enum language lang,
652 struct partial_symtab *main_pst)
654 if (lookup_minimal_symbol ("adainit", (const char *) NULL,
655 (struct objfile *) NULL) != NULL)
661 /* If the main procedure is written in Ada, then return its name.
662 The result is good until the next call. Return NULL if the main
663 procedure doesn't appear to be in Ada. */
668 struct minimal_symbol *msym;
669 CORE_ADDR main_program_name_addr;
670 static char main_program_name[1024];
672 /* For Ada, the name of the main procedure is stored in a specific
673 string constant, generated by the binder. Look for that symbol,
674 extract its address, and then read that string. If we didn't find
675 that string, then most probably the main procedure is not written
677 msym = lookup_minimal_symbol (ADA_MAIN_PROGRAM_SYMBOL_NAME, NULL, NULL);
681 main_program_name_addr = SYMBOL_VALUE_ADDRESS (msym);
682 if (main_program_name_addr == 0)
683 error (_("Invalid address for Ada main program name."));
685 extract_string (main_program_name_addr, main_program_name);
686 return main_program_name;
689 /* The main procedure doesn't seem to be in Ada. */
695 /* Table of Ada operators and their GNAT-encoded names. Last entry is pair
698 const struct ada_opname_map ada_opname_table[] = {
699 {"Oadd", "\"+\"", BINOP_ADD},
700 {"Osubtract", "\"-\"", BINOP_SUB},
701 {"Omultiply", "\"*\"", BINOP_MUL},
702 {"Odivide", "\"/\"", BINOP_DIV},
703 {"Omod", "\"mod\"", BINOP_MOD},
704 {"Orem", "\"rem\"", BINOP_REM},
705 {"Oexpon", "\"**\"", BINOP_EXP},
706 {"Olt", "\"<\"", BINOP_LESS},
707 {"Ole", "\"<=\"", BINOP_LEQ},
708 {"Ogt", "\">\"", BINOP_GTR},
709 {"Oge", "\">=\"", BINOP_GEQ},
710 {"Oeq", "\"=\"", BINOP_EQUAL},
711 {"One", "\"/=\"", BINOP_NOTEQUAL},
712 {"Oand", "\"and\"", BINOP_BITWISE_AND},
713 {"Oor", "\"or\"", BINOP_BITWISE_IOR},
714 {"Oxor", "\"xor\"", BINOP_BITWISE_XOR},
715 {"Oconcat", "\"&\"", BINOP_CONCAT},
716 {"Oabs", "\"abs\"", UNOP_ABS},
717 {"Onot", "\"not\"", UNOP_LOGICAL_NOT},
718 {"Oadd", "\"+\"", UNOP_PLUS},
719 {"Osubtract", "\"-\"", UNOP_NEG},
723 /* Return non-zero if STR should be suppressed in info listings. */
726 is_suppressed_name (const char *str)
728 if (strncmp (str, "_ada_", 5) == 0)
730 if (str[0] == '_' || str[0] == '\000')
735 const char *suffix = strstr (str, "___");
736 if (suffix != NULL && suffix[3] != 'X')
739 suffix = str + strlen (str);
740 for (p = suffix - 1; p != str; p -= 1)
744 if (p[0] == 'X' && p[-1] != '_')
748 for (i = 0; ada_opname_table[i].encoded != NULL; i += 1)
749 if (strncmp (ada_opname_table[i].encoded, p,
750 strlen (ada_opname_table[i].encoded)) == 0)
759 /* The "encoded" form of DECODED, according to GNAT conventions.
760 The result is valid until the next call to ada_encode. */
763 ada_encode (const char *decoded)
765 static char *encoding_buffer = NULL;
766 static size_t encoding_buffer_size = 0;
773 GROW_VECT (encoding_buffer, encoding_buffer_size,
774 2 * strlen (decoded) + 10);
777 for (p = decoded; *p != '\0'; p += 1)
779 if (!ADA_RETAIN_DOTS && *p == '.')
781 encoding_buffer[k] = encoding_buffer[k + 1] = '_';
786 const struct ada_opname_map *mapping;
788 for (mapping = ada_opname_table;
789 mapping->encoded != NULL
790 && strncmp (mapping->decoded, p,
791 strlen (mapping->decoded)) != 0; mapping += 1)
793 if (mapping->encoded == NULL)
794 error (_("invalid Ada operator name: %s"), p);
795 strcpy (encoding_buffer + k, mapping->encoded);
796 k += strlen (mapping->encoded);
801 encoding_buffer[k] = *p;
806 encoding_buffer[k] = '\0';
807 return encoding_buffer;
810 /* Return NAME folded to lower case, or, if surrounded by single
811 quotes, unfolded, but with the quotes stripped away. Result good
815 ada_fold_name (const char *name)
817 static char *fold_buffer = NULL;
818 static size_t fold_buffer_size = 0;
820 int len = strlen (name);
821 GROW_VECT (fold_buffer, fold_buffer_size, len + 1);
825 strncpy (fold_buffer, name + 1, len - 2);
826 fold_buffer[len - 2] = '\000';
831 for (i = 0; i <= len; i += 1)
832 fold_buffer[i] = tolower (name[i]);
838 /* Return nonzero if C is either a digit or a lowercase alphabet character. */
841 is_lower_alphanum (const char c)
843 return (isdigit (c) || (isalpha (c) && islower (c)));
847 . Discard trailing .{DIGIT}+, ${DIGIT}+ or ___{DIGIT}+
848 These are suffixes introduced by GNAT5 to nested subprogram
849 names, and do not serve any purpose for the debugger.
850 . Discard final __{DIGIT}+ or $({DIGIT}+(__{DIGIT}+)*)
851 . Discard final N if it follows a lowercase alphanumeric character
852 (protected object subprogram suffix)
853 . Convert other instances of embedded "__" to `.'.
854 . Discard leading _ada_.
855 . Convert operator names to the appropriate quoted symbols.
856 . Remove everything after first ___ if it is followed by
858 . Replace TK__ with __, and a trailing B or TKB with nothing.
859 . Replace _[EB]{DIGIT}+[sb] with nothing (protected object entries)
860 . Put symbols that should be suppressed in <...> brackets.
861 . Remove trailing X[bn]* suffix (indicating names in package bodies).
863 The resulting string is valid until the next call of ada_decode.
864 If the string is unchanged by demangling, the original string pointer
868 ada_decode (const char *encoded)
875 static char *decoding_buffer = NULL;
876 static size_t decoding_buffer_size = 0;
878 if (strncmp (encoded, "_ada_", 5) == 0)
881 if (encoded[0] == '_' || encoded[0] == '<')
884 /* Remove trailing .{DIGIT}+ or ___{DIGIT}+ or __{DIGIT}+. */
885 len0 = strlen (encoded);
886 if (len0 > 1 && isdigit (encoded[len0 - 1]))
889 while (i > 0 && isdigit (encoded[i]))
891 if (i >= 0 && encoded[i] == '.')
893 else if (i >= 0 && encoded[i] == '$')
895 else if (i >= 2 && strncmp (encoded + i - 2, "___", 3) == 0)
897 else if (i >= 1 && strncmp (encoded + i - 1, "__", 2) == 0)
901 /* Remove trailing N. */
903 /* Protected entry subprograms are broken into two
904 separate subprograms: The first one is unprotected, and has
905 a 'N' suffix; the second is the protected version, and has
906 the 'P' suffix. The second calls the first one after handling
907 the protection. Since the P subprograms are internally generated,
908 we leave these names undecoded, giving the user a clue that this
909 entity is internal. */
912 && encoded[len0 - 1] == 'N'
913 && (isdigit (encoded[len0 - 2]) || islower (encoded[len0 - 2])))
916 /* Remove the ___X.* suffix if present. Do not forget to verify that
917 the suffix is located before the current "end" of ENCODED. We want
918 to avoid re-matching parts of ENCODED that have previously been
919 marked as discarded (by decrementing LEN0). */
920 p = strstr (encoded, "___");
921 if (p != NULL && p - encoded < len0 - 3)
929 if (len0 > 3 && strncmp (encoded + len0 - 3, "TKB", 3) == 0)
932 if (len0 > 1 && strncmp (encoded + len0 - 1, "B", 1) == 0)
935 /* Make decoded big enough for possible expansion by operator name. */
936 GROW_VECT (decoding_buffer, decoding_buffer_size, 2 * len0 + 1);
937 decoded = decoding_buffer;
939 if (len0 > 1 && isdigit (encoded[len0 - 1]))
942 while ((i >= 0 && isdigit (encoded[i]))
943 || (i >= 1 && encoded[i] == '_' && isdigit (encoded[i - 1])))
945 if (i > 1 && encoded[i] == '_' && encoded[i - 1] == '_')
947 else if (encoded[i] == '$')
951 for (i = 0, j = 0; i < len0 && !isalpha (encoded[i]); i += 1, j += 1)
952 decoded[j] = encoded[i];
957 if (at_start_name && encoded[i] == 'O')
960 for (k = 0; ada_opname_table[k].encoded != NULL; k += 1)
962 int op_len = strlen (ada_opname_table[k].encoded);
963 if ((strncmp (ada_opname_table[k].encoded + 1, encoded + i + 1,
965 && !isalnum (encoded[i + op_len]))
967 strcpy (decoded + j, ada_opname_table[k].decoded);
970 j += strlen (ada_opname_table[k].decoded);
974 if (ada_opname_table[k].encoded != NULL)
979 /* Replace "TK__" with "__", which will eventually be translated
980 into "." (just below). */
982 if (i < len0 - 4 && strncmp (encoded + i, "TK__", 4) == 0)
985 /* Remove _E{DIGITS}+[sb] */
987 /* Just as for protected object subprograms, there are 2 categories
988 of subprograms created by the compiler for each entry. The first
989 one implements the actual entry code, and has a suffix following
990 the convention above; the second one implements the barrier and
991 uses the same convention as above, except that the 'E' is replaced
994 Just as above, we do not decode the name of barrier functions
995 to give the user a clue that the code he is debugging has been
996 internally generated. */
998 if (len0 - i > 3 && encoded [i] == '_' && encoded[i+1] == 'E'
999 && isdigit (encoded[i+2]))
1003 while (k < len0 && isdigit (encoded[k]))
1007 && (encoded[k] == 'b' || encoded[k] == 's'))
1010 /* Just as an extra precaution, make sure that if this
1011 suffix is followed by anything else, it is a '_'.
1012 Otherwise, we matched this sequence by accident. */
1014 || (k < len0 && encoded[k] == '_'))
1019 /* Remove trailing "N" in [a-z0-9]+N__. The N is added by
1020 the GNAT front-end in protected object subprograms. */
1023 && encoded[i] == 'N' && encoded[i+1] == '_' && encoded[i+2] == '_')
1025 /* Backtrack a bit up until we reach either the begining of
1026 the encoded name, or "__". Make sure that we only find
1027 digits or lowercase characters. */
1028 const char *ptr = encoded + i - 1;
1030 while (ptr >= encoded && is_lower_alphanum (ptr[0]))
1033 || (ptr > encoded && ptr[0] == '_' && ptr[-1] == '_'))
1037 if (encoded[i] == 'X' && i != 0 && isalnum (encoded[i - 1]))
1041 while (i < len0 && (encoded[i] == 'b' || encoded[i] == 'n'));
1045 else if (!ADA_RETAIN_DOTS
1046 && i < len0 - 2 && encoded[i] == '_' && encoded[i + 1] == '_')
1055 decoded[j] = encoded[i];
1060 decoded[j] = '\000';
1062 for (i = 0; decoded[i] != '\0'; i += 1)
1063 if (isupper (decoded[i]) || decoded[i] == ' ')
1066 if (strcmp (decoded, encoded) == 0)
1072 GROW_VECT (decoding_buffer, decoding_buffer_size, strlen (encoded) + 3);
1073 decoded = decoding_buffer;
1074 if (encoded[0] == '<')
1075 strcpy (decoded, encoded);
1077 sprintf (decoded, "<%s>", encoded);
1082 /* Table for keeping permanent unique copies of decoded names. Once
1083 allocated, names in this table are never released. While this is a
1084 storage leak, it should not be significant unless there are massive
1085 changes in the set of decoded names in successive versions of a
1086 symbol table loaded during a single session. */
1087 static struct htab *decoded_names_store;
1089 /* Returns the decoded name of GSYMBOL, as for ada_decode, caching it
1090 in the language-specific part of GSYMBOL, if it has not been
1091 previously computed. Tries to save the decoded name in the same
1092 obstack as GSYMBOL, if possible, and otherwise on the heap (so that,
1093 in any case, the decoded symbol has a lifetime at least that of
1095 The GSYMBOL parameter is "mutable" in the C++ sense: logically
1096 const, but nevertheless modified to a semantically equivalent form
1097 when a decoded name is cached in it.
1101 ada_decode_symbol (const struct general_symbol_info *gsymbol)
1104 (char **) &gsymbol->language_specific.cplus_specific.demangled_name;
1105 if (*resultp == NULL)
1107 const char *decoded = ada_decode (gsymbol->name);
1108 if (gsymbol->bfd_section != NULL)
1110 bfd *obfd = gsymbol->bfd_section->owner;
1113 struct objfile *objf;
1116 if (obfd == objf->obfd)
1118 *resultp = obsavestring (decoded, strlen (decoded),
1119 &objf->objfile_obstack);
1125 /* Sometimes, we can't find a corresponding objfile, in which
1126 case, we put the result on the heap. Since we only decode
1127 when needed, we hope this usually does not cause a
1128 significant memory leak (FIXME). */
1129 if (*resultp == NULL)
1131 char **slot = (char **) htab_find_slot (decoded_names_store,
1134 *slot = xstrdup (decoded);
1143 ada_la_decode (const char *encoded, int options)
1145 return xstrdup (ada_decode (encoded));
1148 /* Returns non-zero iff SYM_NAME matches NAME, ignoring any trailing
1149 suffixes that encode debugging information or leading _ada_ on
1150 SYM_NAME (see is_name_suffix commentary for the debugging
1151 information that is ignored). If WILD, then NAME need only match a
1152 suffix of SYM_NAME minus the same suffixes. Also returns 0 if
1153 either argument is NULL. */
1156 ada_match_name (const char *sym_name, const char *name, int wild)
1158 if (sym_name == NULL || name == NULL)
1161 return wild_match (name, strlen (name), sym_name);
1164 int len_name = strlen (name);
1165 return (strncmp (sym_name, name, len_name) == 0
1166 && is_name_suffix (sym_name + len_name))
1167 || (strncmp (sym_name, "_ada_", 5) == 0
1168 && strncmp (sym_name + 5, name, len_name) == 0
1169 && is_name_suffix (sym_name + len_name + 5));
1173 /* True (non-zero) iff, in Ada mode, the symbol SYM should be
1174 suppressed in info listings. */
1177 ada_suppress_symbol_printing (struct symbol *sym)
1179 if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN)
1182 return is_suppressed_name (SYMBOL_LINKAGE_NAME (sym));
1188 /* Names of MAX_ADA_DIMENS bounds in P_BOUNDS fields of array descriptors. */
1190 static char *bound_name[] = {
1191 "LB0", "UB0", "LB1", "UB1", "LB2", "UB2", "LB3", "UB3",
1192 "LB4", "UB4", "LB5", "UB5", "LB6", "UB6", "LB7", "UB7"
1195 /* Maximum number of array dimensions we are prepared to handle. */
1197 #define MAX_ADA_DIMENS (sizeof(bound_name) / (2*sizeof(char *)))
1199 /* Like modify_field, but allows bitpos > wordlength. */
1202 modify_general_field (char *addr, LONGEST fieldval, int bitpos, int bitsize)
1204 modify_field (addr + bitpos / 8, fieldval, bitpos % 8, bitsize);
1208 /* The desc_* routines return primitive portions of array descriptors
1211 /* The descriptor or array type, if any, indicated by TYPE; removes
1212 level of indirection, if needed. */
1214 static struct type *
1215 desc_base_type (struct type *type)
1219 type = ada_check_typedef (type);
1221 && (TYPE_CODE (type) == TYPE_CODE_PTR
1222 || TYPE_CODE (type) == TYPE_CODE_REF))
1223 return ada_check_typedef (TYPE_TARGET_TYPE (type));
1228 /* True iff TYPE indicates a "thin" array pointer type. */
1231 is_thin_pntr (struct type *type)
1234 is_suffix (ada_type_name (desc_base_type (type)), "___XUT")
1235 || is_suffix (ada_type_name (desc_base_type (type)), "___XUT___XVE");
1238 /* The descriptor type for thin pointer type TYPE. */
1240 static struct type *
1241 thin_descriptor_type (struct type *type)
1243 struct type *base_type = desc_base_type (type);
1244 if (base_type == NULL)
1246 if (is_suffix (ada_type_name (base_type), "___XVE"))
1250 struct type *alt_type = ada_find_parallel_type (base_type, "___XVE");
1251 if (alt_type == NULL)
1258 /* A pointer to the array data for thin-pointer value VAL. */
1260 static struct value *
1261 thin_data_pntr (struct value *val)
1263 struct type *type = value_type (val);
1264 if (TYPE_CODE (type) == TYPE_CODE_PTR)
1265 return value_cast (desc_data_type (thin_descriptor_type (type)),
1268 return value_from_longest (desc_data_type (thin_descriptor_type (type)),
1269 VALUE_ADDRESS (val) + value_offset (val));
1272 /* True iff TYPE indicates a "thick" array pointer type. */
1275 is_thick_pntr (struct type *type)
1277 type = desc_base_type (type);
1278 return (type != NULL && TYPE_CODE (type) == TYPE_CODE_STRUCT
1279 && lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL);
1282 /* If TYPE is the type of an array descriptor (fat or thin pointer) or a
1283 pointer to one, the type of its bounds data; otherwise, NULL. */
1285 static struct type *
1286 desc_bounds_type (struct type *type)
1290 type = desc_base_type (type);
1294 else if (is_thin_pntr (type))
1296 type = thin_descriptor_type (type);
1299 r = lookup_struct_elt_type (type, "BOUNDS", 1);
1301 return ada_check_typedef (r);
1303 else if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
1305 r = lookup_struct_elt_type (type, "P_BOUNDS", 1);
1307 return ada_check_typedef (TYPE_TARGET_TYPE (ada_check_typedef (r)));
1312 /* If ARR is an array descriptor (fat or thin pointer), or pointer to
1313 one, a pointer to its bounds data. Otherwise NULL. */
1315 static struct value *
1316 desc_bounds (struct value *arr)
1318 struct type *type = ada_check_typedef (value_type (arr));
1319 if (is_thin_pntr (type))
1321 struct type *bounds_type =
1322 desc_bounds_type (thin_descriptor_type (type));
1325 if (bounds_type == NULL)
1326 error (_("Bad GNAT array descriptor"));
1328 /* NOTE: The following calculation is not really kosher, but
1329 since desc_type is an XVE-encoded type (and shouldn't be),
1330 the correct calculation is a real pain. FIXME (and fix GCC). */
1331 if (TYPE_CODE (type) == TYPE_CODE_PTR)
1332 addr = value_as_long (arr);
1334 addr = VALUE_ADDRESS (arr) + value_offset (arr);
1337 value_from_longest (lookup_pointer_type (bounds_type),
1338 addr - TYPE_LENGTH (bounds_type));
1341 else if (is_thick_pntr (type))
1342 return value_struct_elt (&arr, NULL, "P_BOUNDS", NULL,
1343 _("Bad GNAT array descriptor"));
1348 /* If TYPE is the type of an array-descriptor (fat pointer), the bit
1349 position of the field containing the address of the bounds data. */
1352 fat_pntr_bounds_bitpos (struct type *type)
1354 return TYPE_FIELD_BITPOS (desc_base_type (type), 1);
1357 /* If TYPE is the type of an array-descriptor (fat pointer), the bit
1358 size of the field containing the address of the bounds data. */
1361 fat_pntr_bounds_bitsize (struct type *type)
1363 type = desc_base_type (type);
1365 if (TYPE_FIELD_BITSIZE (type, 1) > 0)
1366 return TYPE_FIELD_BITSIZE (type, 1);
1368 return 8 * TYPE_LENGTH (ada_check_typedef (TYPE_FIELD_TYPE (type, 1)));
1371 /* If TYPE is the type of an array descriptor (fat or thin pointer) or a
1372 pointer to one, the type of its array data (a
1373 pointer-to-array-with-no-bounds type); otherwise, NULL. Use
1374 ada_type_of_array to get an array type with bounds data. */
1376 static struct type *
1377 desc_data_type (struct type *type)
1379 type = desc_base_type (type);
1381 /* NOTE: The following is bogus; see comment in desc_bounds. */
1382 if (is_thin_pntr (type))
1383 return lookup_pointer_type
1384 (desc_base_type (TYPE_FIELD_TYPE (thin_descriptor_type (type), 1)));
1385 else if (is_thick_pntr (type))
1386 return lookup_struct_elt_type (type, "P_ARRAY", 1);
1391 /* If ARR is an array descriptor (fat or thin pointer), a pointer to
1394 static struct value *
1395 desc_data (struct value *arr)
1397 struct type *type = value_type (arr);
1398 if (is_thin_pntr (type))
1399 return thin_data_pntr (arr);
1400 else if (is_thick_pntr (type))
1401 return value_struct_elt (&arr, NULL, "P_ARRAY", NULL,
1402 _("Bad GNAT array descriptor"));
1408 /* If TYPE is the type of an array-descriptor (fat pointer), the bit
1409 position of the field containing the address of the data. */
1412 fat_pntr_data_bitpos (struct type *type)
1414 return TYPE_FIELD_BITPOS (desc_base_type (type), 0);
1417 /* If TYPE is the type of an array-descriptor (fat pointer), the bit
1418 size of the field containing the address of the data. */
1421 fat_pntr_data_bitsize (struct type *type)
1423 type = desc_base_type (type);
1425 if (TYPE_FIELD_BITSIZE (type, 0) > 0)
1426 return TYPE_FIELD_BITSIZE (type, 0);
1428 return TARGET_CHAR_BIT * TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0));
1431 /* If BOUNDS is an array-bounds structure (or pointer to one), return
1432 the Ith lower bound stored in it, if WHICH is 0, and the Ith upper
1433 bound, if WHICH is 1. The first bound is I=1. */
1435 static struct value *
1436 desc_one_bound (struct value *bounds, int i, int which)
1438 return value_struct_elt (&bounds, NULL, bound_name[2 * i + which - 2], NULL,
1439 _("Bad GNAT array descriptor bounds"));
1442 /* If BOUNDS is an array-bounds structure type, return the bit position
1443 of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper
1444 bound, if WHICH is 1. The first bound is I=1. */
1447 desc_bound_bitpos (struct type *type, int i, int which)
1449 return TYPE_FIELD_BITPOS (desc_base_type (type), 2 * i + which - 2);
1452 /* If BOUNDS is an array-bounds structure type, return the bit field size
1453 of the Ith lower bound stored in it, if WHICH is 0, and the Ith upper
1454 bound, if WHICH is 1. The first bound is I=1. */
1457 desc_bound_bitsize (struct type *type, int i, int which)
1459 type = desc_base_type (type);
1461 if (TYPE_FIELD_BITSIZE (type, 2 * i + which - 2) > 0)
1462 return TYPE_FIELD_BITSIZE (type, 2 * i + which - 2);
1464 return 8 * TYPE_LENGTH (TYPE_FIELD_TYPE (type, 2 * i + which - 2));
1467 /* If TYPE is the type of an array-bounds structure, the type of its
1468 Ith bound (numbering from 1). Otherwise, NULL. */
1470 static struct type *
1471 desc_index_type (struct type *type, int i)
1473 type = desc_base_type (type);
1475 if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
1476 return lookup_struct_elt_type (type, bound_name[2 * i - 2], 1);
1481 /* The number of index positions in the array-bounds type TYPE.
1482 Return 0 if TYPE is NULL. */
1485 desc_arity (struct type *type)
1487 type = desc_base_type (type);
1490 return TYPE_NFIELDS (type) / 2;
1494 /* Non-zero iff TYPE is a simple array type (not a pointer to one) or
1495 an array descriptor type (representing an unconstrained array
1499 ada_is_direct_array_type (struct type *type)
1503 type = ada_check_typedef (type);
1504 return (TYPE_CODE (type) == TYPE_CODE_ARRAY
1505 || ada_is_array_descriptor_type (type));
1508 /* Non-zero iff TYPE represents any kind of array in Ada, or a pointer
1512 ada_is_array_type (struct type *type)
1515 && (TYPE_CODE (type) == TYPE_CODE_PTR
1516 || TYPE_CODE (type) == TYPE_CODE_REF))
1517 type = TYPE_TARGET_TYPE (type);
1518 return ada_is_direct_array_type (type);
1521 /* Non-zero iff TYPE is a simple array type or pointer to one. */
1524 ada_is_simple_array_type (struct type *type)
1528 type = ada_check_typedef (type);
1529 return (TYPE_CODE (type) == TYPE_CODE_ARRAY
1530 || (TYPE_CODE (type) == TYPE_CODE_PTR
1531 && TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_ARRAY));
1534 /* Non-zero iff TYPE belongs to a GNAT array descriptor. */
1537 ada_is_array_descriptor_type (struct type *type)
1539 struct type *data_type = desc_data_type (type);
1543 type = ada_check_typedef (type);
1546 && ((TYPE_CODE (data_type) == TYPE_CODE_PTR
1547 && TYPE_TARGET_TYPE (data_type) != NULL
1548 && TYPE_CODE (TYPE_TARGET_TYPE (data_type)) == TYPE_CODE_ARRAY)
1549 || TYPE_CODE (data_type) == TYPE_CODE_ARRAY)
1550 && desc_arity (desc_bounds_type (type)) > 0;
1553 /* Non-zero iff type is a partially mal-formed GNAT array
1554 descriptor. FIXME: This is to compensate for some problems with
1555 debugging output from GNAT. Re-examine periodically to see if it
1559 ada_is_bogus_array_descriptor (struct type *type)
1563 && TYPE_CODE (type) == TYPE_CODE_STRUCT
1564 && (lookup_struct_elt_type (type, "P_BOUNDS", 1) != NULL
1565 || lookup_struct_elt_type (type, "P_ARRAY", 1) != NULL)
1566 && !ada_is_array_descriptor_type (type);
1570 /* If ARR has a record type in the form of a standard GNAT array descriptor,
1571 (fat pointer) returns the type of the array data described---specifically,
1572 a pointer-to-array type. If BOUNDS is non-zero, the bounds data are filled
1573 in from the descriptor; otherwise, they are left unspecified. If
1574 the ARR denotes a null array descriptor and BOUNDS is non-zero,
1575 returns NULL. The result is simply the type of ARR if ARR is not
1578 ada_type_of_array (struct value *arr, int bounds)
1580 if (ada_is_packed_array_type (value_type (arr)))
1581 return decode_packed_array_type (value_type (arr));
1583 if (!ada_is_array_descriptor_type (value_type (arr)))
1584 return value_type (arr);
1588 ada_check_typedef (TYPE_TARGET_TYPE (desc_data_type (value_type (arr))));
1591 struct type *elt_type;
1593 struct value *descriptor;
1594 struct objfile *objf = TYPE_OBJFILE (value_type (arr));
1596 elt_type = ada_array_element_type (value_type (arr), -1);
1597 arity = ada_array_arity (value_type (arr));
1599 if (elt_type == NULL || arity == 0)
1600 return ada_check_typedef (value_type (arr));
1602 descriptor = desc_bounds (arr);
1603 if (value_as_long (descriptor) == 0)
1607 struct type *range_type = alloc_type (objf);
1608 struct type *array_type = alloc_type (objf);
1609 struct value *low = desc_one_bound (descriptor, arity, 0);
1610 struct value *high = desc_one_bound (descriptor, arity, 1);
1613 create_range_type (range_type, value_type (low),
1614 longest_to_int (value_as_long (low)),
1615 longest_to_int (value_as_long (high)));
1616 elt_type = create_array_type (array_type, elt_type, range_type);
1619 return lookup_pointer_type (elt_type);
1623 /* If ARR does not represent an array, returns ARR unchanged.
1624 Otherwise, returns either a standard GDB array with bounds set
1625 appropriately or, if ARR is a non-null fat pointer, a pointer to a standard
1626 GDB array. Returns NULL if ARR is a null fat pointer. */
1629 ada_coerce_to_simple_array_ptr (struct value *arr)
1631 if (ada_is_array_descriptor_type (value_type (arr)))
1633 struct type *arrType = ada_type_of_array (arr, 1);
1634 if (arrType == NULL)
1636 return value_cast (arrType, value_copy (desc_data (arr)));
1638 else if (ada_is_packed_array_type (value_type (arr)))
1639 return decode_packed_array (arr);
1644 /* If ARR does not represent an array, returns ARR unchanged.
1645 Otherwise, returns a standard GDB array describing ARR (which may
1646 be ARR itself if it already is in the proper form). */
1648 static struct value *
1649 ada_coerce_to_simple_array (struct value *arr)
1651 if (ada_is_array_descriptor_type (value_type (arr)))
1653 struct value *arrVal = ada_coerce_to_simple_array_ptr (arr);
1655 error (_("Bounds unavailable for null array pointer."));
1656 check_size (TYPE_TARGET_TYPE (value_type (arrVal)));
1657 return value_ind (arrVal);
1659 else if (ada_is_packed_array_type (value_type (arr)))
1660 return decode_packed_array (arr);
1665 /* If TYPE represents a GNAT array type, return it translated to an
1666 ordinary GDB array type (possibly with BITSIZE fields indicating
1667 packing). For other types, is the identity. */
1670 ada_coerce_to_simple_array_type (struct type *type)
1672 struct value *mark = value_mark ();
1673 struct value *dummy = value_from_longest (builtin_type_long, 0);
1674 struct type *result;
1675 deprecated_set_value_type (dummy, type);
1676 result = ada_type_of_array (dummy, 0);
1677 value_free_to_mark (mark);
1681 /* Non-zero iff TYPE represents a standard GNAT packed-array type. */
1684 ada_is_packed_array_type (struct type *type)
1688 type = desc_base_type (type);
1689 type = ada_check_typedef (type);
1691 ada_type_name (type) != NULL
1692 && strstr (ada_type_name (type), "___XP") != NULL;
1695 /* Given that TYPE is a standard GDB array type with all bounds filled
1696 in, and that the element size of its ultimate scalar constituents
1697 (that is, either its elements, or, if it is an array of arrays, its
1698 elements' elements, etc.) is *ELT_BITS, return an identical type,
1699 but with the bit sizes of its elements (and those of any
1700 constituent arrays) recorded in the BITSIZE components of its
1701 TYPE_FIELD_BITSIZE values, and with *ELT_BITS set to its total size
1704 static struct type *
1705 packed_array_type (struct type *type, long *elt_bits)
1707 struct type *new_elt_type;
1708 struct type *new_type;
1709 LONGEST low_bound, high_bound;
1711 type = ada_check_typedef (type);
1712 if (TYPE_CODE (type) != TYPE_CODE_ARRAY)
1715 new_type = alloc_type (TYPE_OBJFILE (type));
1716 new_elt_type = packed_array_type (ada_check_typedef (TYPE_TARGET_TYPE (type)),
1718 create_array_type (new_type, new_elt_type, TYPE_FIELD_TYPE (type, 0));
1719 TYPE_FIELD_BITSIZE (new_type, 0) = *elt_bits;
1720 TYPE_NAME (new_type) = ada_type_name (type);
1722 if (get_discrete_bounds (TYPE_FIELD_TYPE (type, 0),
1723 &low_bound, &high_bound) < 0)
1724 low_bound = high_bound = 0;
1725 if (high_bound < low_bound)
1726 *elt_bits = TYPE_LENGTH (new_type) = 0;
1729 *elt_bits *= (high_bound - low_bound + 1);
1730 TYPE_LENGTH (new_type) =
1731 (*elt_bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT;
1734 TYPE_FLAGS (new_type) |= TYPE_FLAG_FIXED_INSTANCE;
1738 /* The array type encoded by TYPE, where ada_is_packed_array_type (TYPE). */
1740 static struct type *
1741 decode_packed_array_type (struct type *type)
1744 struct block **blocks;
1745 const char *raw_name = ada_type_name (ada_check_typedef (type));
1746 char *name = (char *) alloca (strlen (raw_name) + 1);
1747 char *tail = strstr (raw_name, "___XP");
1748 struct type *shadow_type;
1752 type = desc_base_type (type);
1754 memcpy (name, raw_name, tail - raw_name);
1755 name[tail - raw_name] = '\000';
1757 sym = standard_lookup (name, get_selected_block (0), VAR_DOMAIN);
1758 if (sym == NULL || SYMBOL_TYPE (sym) == NULL)
1760 lim_warning (_("could not find bounds information on packed array"));
1763 shadow_type = SYMBOL_TYPE (sym);
1765 if (TYPE_CODE (shadow_type) != TYPE_CODE_ARRAY)
1767 lim_warning (_("could not understand bounds information on packed array"));
1771 if (sscanf (tail + sizeof ("___XP") - 1, "%ld", &bits) != 1)
1774 (_("could not understand bit size information on packed array"));
1778 return packed_array_type (shadow_type, &bits);
1781 /* Given that ARR is a struct value *indicating a GNAT packed array,
1782 returns a simple array that denotes that array. Its type is a
1783 standard GDB array type except that the BITSIZEs of the array
1784 target types are set to the number of bits in each element, and the
1785 type length is set appropriately. */
1787 static struct value *
1788 decode_packed_array (struct value *arr)
1792 arr = ada_coerce_ref (arr);
1793 if (TYPE_CODE (value_type (arr)) == TYPE_CODE_PTR)
1794 arr = ada_value_ind (arr);
1796 type = decode_packed_array_type (value_type (arr));
1799 error (_("can't unpack array"));
1803 if (BITS_BIG_ENDIAN && ada_is_modular_type (value_type (arr)))
1805 /* This is a (right-justified) modular type representing a packed
1806 array with no wrapper. In order to interpret the value through
1807 the (left-justified) packed array type we just built, we must
1808 first left-justify it. */
1809 int bit_size, bit_pos;
1812 mod = ada_modulus (value_type (arr)) - 1;
1819 bit_pos = HOST_CHAR_BIT * TYPE_LENGTH (value_type (arr)) - bit_size;
1820 arr = ada_value_primitive_packed_val (arr, NULL,
1821 bit_pos / HOST_CHAR_BIT,
1822 bit_pos % HOST_CHAR_BIT,
1827 return coerce_unspec_val_to_type (arr, type);
1831 /* The value of the element of packed array ARR at the ARITY indices
1832 given in IND. ARR must be a simple array. */
1834 static struct value *
1835 value_subscript_packed (struct value *arr, int arity, struct value **ind)
1838 int bits, elt_off, bit_off;
1839 long elt_total_bit_offset;
1840 struct type *elt_type;
1844 elt_total_bit_offset = 0;
1845 elt_type = ada_check_typedef (value_type (arr));
1846 for (i = 0; i < arity; i += 1)
1848 if (TYPE_CODE (elt_type) != TYPE_CODE_ARRAY
1849 || TYPE_FIELD_BITSIZE (elt_type, 0) == 0)
1851 (_("attempt to do packed indexing of something other than a packed array"));
1854 struct type *range_type = TYPE_INDEX_TYPE (elt_type);
1855 LONGEST lowerbound, upperbound;
1858 if (get_discrete_bounds (range_type, &lowerbound, &upperbound) < 0)
1860 lim_warning (_("don't know bounds of array"));
1861 lowerbound = upperbound = 0;
1864 idx = value_as_long (value_pos_atr (ind[i]));
1865 if (idx < lowerbound || idx > upperbound)
1866 lim_warning (_("packed array index %ld out of bounds"), (long) idx);
1867 bits = TYPE_FIELD_BITSIZE (elt_type, 0);
1868 elt_total_bit_offset += (idx - lowerbound) * bits;
1869 elt_type = ada_check_typedef (TYPE_TARGET_TYPE (elt_type));
1872 elt_off = elt_total_bit_offset / HOST_CHAR_BIT;
1873 bit_off = elt_total_bit_offset % HOST_CHAR_BIT;
1875 v = ada_value_primitive_packed_val (arr, NULL, elt_off, bit_off,
1880 /* Non-zero iff TYPE includes negative integer values. */
1883 has_negatives (struct type *type)
1885 switch (TYPE_CODE (type))
1890 return !TYPE_UNSIGNED (type);
1891 case TYPE_CODE_RANGE:
1892 return TYPE_LOW_BOUND (type) < 0;
1897 /* Create a new value of type TYPE from the contents of OBJ starting
1898 at byte OFFSET, and bit offset BIT_OFFSET within that byte,
1899 proceeding for BIT_SIZE bits. If OBJ is an lval in memory, then
1900 assigning through the result will set the field fetched from.
1901 VALADDR is ignored unless OBJ is NULL, in which case,
1902 VALADDR+OFFSET must address the start of storage containing the
1903 packed value. The value returned in this case is never an lval.
1904 Assumes 0 <= BIT_OFFSET < HOST_CHAR_BIT. */
1907 ada_value_primitive_packed_val (struct value *obj, const gdb_byte *valaddr,
1908 long offset, int bit_offset, int bit_size,
1912 int src, /* Index into the source area */
1913 targ, /* Index into the target area */
1914 srcBitsLeft, /* Number of source bits left to move */
1915 nsrc, ntarg, /* Number of source and target bytes */
1916 unusedLS, /* Number of bits in next significant
1917 byte of source that are unused */
1918 accumSize; /* Number of meaningful bits in accum */
1919 unsigned char *bytes; /* First byte containing data to unpack */
1920 unsigned char *unpacked;
1921 unsigned long accum; /* Staging area for bits being transferred */
1923 int len = (bit_size + bit_offset + HOST_CHAR_BIT - 1) / 8;
1924 /* Transmit bytes from least to most significant; delta is the direction
1925 the indices move. */
1926 int delta = BITS_BIG_ENDIAN ? -1 : 1;
1928 type = ada_check_typedef (type);
1932 v = allocate_value (type);
1933 bytes = (unsigned char *) (valaddr + offset);
1935 else if (value_lazy (obj))
1938 VALUE_ADDRESS (obj) + value_offset (obj) + offset);
1939 bytes = (unsigned char *) alloca (len);
1940 read_memory (VALUE_ADDRESS (v), bytes, len);
1944 v = allocate_value (type);
1945 bytes = (unsigned char *) value_contents (obj) + offset;
1950 VALUE_LVAL (v) = VALUE_LVAL (obj);
1951 if (VALUE_LVAL (obj) == lval_internalvar)
1952 VALUE_LVAL (v) = lval_internalvar_component;
1953 VALUE_ADDRESS (v) = VALUE_ADDRESS (obj) + value_offset (obj) + offset;
1954 set_value_bitpos (v, bit_offset + value_bitpos (obj));
1955 set_value_bitsize (v, bit_size);
1956 if (value_bitpos (v) >= HOST_CHAR_BIT)
1958 VALUE_ADDRESS (v) += 1;
1959 set_value_bitpos (v, value_bitpos (v) - HOST_CHAR_BIT);
1963 set_value_bitsize (v, bit_size);
1964 unpacked = (unsigned char *) value_contents (v);
1966 srcBitsLeft = bit_size;
1968 ntarg = TYPE_LENGTH (type);
1972 memset (unpacked, 0, TYPE_LENGTH (type));
1975 else if (BITS_BIG_ENDIAN)
1978 if (has_negatives (type)
1979 && ((bytes[0] << bit_offset) & (1 << (HOST_CHAR_BIT - 1))))
1983 (HOST_CHAR_BIT - (bit_size + bit_offset) % HOST_CHAR_BIT)
1986 switch (TYPE_CODE (type))
1988 case TYPE_CODE_ARRAY:
1989 case TYPE_CODE_UNION:
1990 case TYPE_CODE_STRUCT:
1991 /* Non-scalar values must be aligned at a byte boundary... */
1993 (HOST_CHAR_BIT - bit_size % HOST_CHAR_BIT) % HOST_CHAR_BIT;
1994 /* ... And are placed at the beginning (most-significant) bytes
1996 targ = (bit_size + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT - 1;
2000 targ = TYPE_LENGTH (type) - 1;
2006 int sign_bit_offset = (bit_size + bit_offset - 1) % 8;
2009 unusedLS = bit_offset;
2012 if (has_negatives (type) && (bytes[len - 1] & (1 << sign_bit_offset)))
2019 /* Mask for removing bits of the next source byte that are not
2020 part of the value. */
2021 unsigned int unusedMSMask =
2022 (1 << (srcBitsLeft >= HOST_CHAR_BIT ? HOST_CHAR_BIT : srcBitsLeft)) -
2024 /* Sign-extend bits for this byte. */
2025 unsigned int signMask = sign & ~unusedMSMask;
2027 (((bytes[src] >> unusedLS) & unusedMSMask) | signMask) << accumSize;
2028 accumSize += HOST_CHAR_BIT - unusedLS;
2029 if (accumSize >= HOST_CHAR_BIT)
2031 unpacked[targ] = accum & ~(~0L << HOST_CHAR_BIT);
2032 accumSize -= HOST_CHAR_BIT;
2033 accum >>= HOST_CHAR_BIT;
2037 srcBitsLeft -= HOST_CHAR_BIT - unusedLS;
2044 accum |= sign << accumSize;
2045 unpacked[targ] = accum & ~(~0L << HOST_CHAR_BIT);
2046 accumSize -= HOST_CHAR_BIT;
2047 accum >>= HOST_CHAR_BIT;
2055 /* Move N bits from SOURCE, starting at bit offset SRC_OFFSET to
2056 TARGET, starting at bit offset TARG_OFFSET. SOURCE and TARGET must
2059 move_bits (gdb_byte *target, int targ_offset, const gdb_byte *source,
2060 int src_offset, int n)
2062 unsigned int accum, mask;
2063 int accum_bits, chunk_size;
2065 target += targ_offset / HOST_CHAR_BIT;
2066 targ_offset %= HOST_CHAR_BIT;
2067 source += src_offset / HOST_CHAR_BIT;
2068 src_offset %= HOST_CHAR_BIT;
2069 if (BITS_BIG_ENDIAN)
2071 accum = (unsigned char) *source;
2073 accum_bits = HOST_CHAR_BIT - src_offset;
2078 accum = (accum << HOST_CHAR_BIT) + (unsigned char) *source;
2079 accum_bits += HOST_CHAR_BIT;
2081 chunk_size = HOST_CHAR_BIT - targ_offset;
2084 unused_right = HOST_CHAR_BIT - (chunk_size + targ_offset);
2085 mask = ((1 << chunk_size) - 1) << unused_right;
2088 | ((accum >> (accum_bits - chunk_size - unused_right)) & mask);
2090 accum_bits -= chunk_size;
2097 accum = (unsigned char) *source >> src_offset;
2099 accum_bits = HOST_CHAR_BIT - src_offset;
2103 accum = accum + ((unsigned char) *source << accum_bits);
2104 accum_bits += HOST_CHAR_BIT;
2106 chunk_size = HOST_CHAR_BIT - targ_offset;
2109 mask = ((1 << chunk_size) - 1) << targ_offset;
2110 *target = (*target & ~mask) | ((accum << targ_offset) & mask);
2112 accum_bits -= chunk_size;
2113 accum >>= chunk_size;
2120 /* Store the contents of FROMVAL into the location of TOVAL.
2121 Return a new value with the location of TOVAL and contents of
2122 FROMVAL. Handles assignment into packed fields that have
2123 floating-point or non-scalar types. */
2125 static struct value *
2126 ada_value_assign (struct value *toval, struct value *fromval)
2128 struct type *type = value_type (toval);
2129 int bits = value_bitsize (toval);
2131 toval = ada_coerce_ref (toval);
2132 fromval = ada_coerce_ref (fromval);
2134 if (ada_is_direct_array_type (value_type (toval)))
2135 toval = ada_coerce_to_simple_array (toval);
2136 if (ada_is_direct_array_type (value_type (fromval)))
2137 fromval = ada_coerce_to_simple_array (fromval);
2139 if (!deprecated_value_modifiable (toval))
2140 error (_("Left operand of assignment is not a modifiable lvalue."));
2142 if (VALUE_LVAL (toval) == lval_memory
2144 && (TYPE_CODE (type) == TYPE_CODE_FLT
2145 || TYPE_CODE (type) == TYPE_CODE_STRUCT))
2147 int len = (value_bitpos (toval)
2148 + bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT;
2149 char *buffer = (char *) alloca (len);
2151 CORE_ADDR to_addr = VALUE_ADDRESS (toval) + value_offset (toval);
2153 if (TYPE_CODE (type) == TYPE_CODE_FLT)
2154 fromval = value_cast (type, fromval);
2156 read_memory (to_addr, buffer, len);
2157 if (BITS_BIG_ENDIAN)
2158 move_bits (buffer, value_bitpos (toval),
2159 value_contents (fromval),
2160 TYPE_LENGTH (value_type (fromval)) * TARGET_CHAR_BIT -
2163 move_bits (buffer, value_bitpos (toval), value_contents (fromval),
2165 write_memory (to_addr, buffer, len);
2166 if (deprecated_memory_changed_hook)
2167 deprecated_memory_changed_hook (to_addr, len);
2169 val = value_copy (toval);
2170 memcpy (value_contents_raw (val), value_contents (fromval),
2171 TYPE_LENGTH (type));
2172 deprecated_set_value_type (val, type);
2177 return value_assign (toval, fromval);
2181 /* Given that COMPONENT is a memory lvalue that is part of the lvalue
2182 * CONTAINER, assign the contents of VAL to COMPONENTS's place in
2183 * CONTAINER. Modifies the VALUE_CONTENTS of CONTAINER only, not
2184 * COMPONENT, and not the inferior's memory. The current contents
2185 * of COMPONENT are ignored. */
2187 value_assign_to_component (struct value *container, struct value *component,
2190 LONGEST offset_in_container =
2191 (LONGEST) (VALUE_ADDRESS (component) + value_offset (component)
2192 - VALUE_ADDRESS (container) - value_offset (container));
2193 int bit_offset_in_container =
2194 value_bitpos (component) - value_bitpos (container);
2197 val = value_cast (value_type (component), val);
2199 if (value_bitsize (component) == 0)
2200 bits = TARGET_CHAR_BIT * TYPE_LENGTH (value_type (component));
2202 bits = value_bitsize (component);
2204 if (BITS_BIG_ENDIAN)
2205 move_bits (value_contents_writeable (container) + offset_in_container,
2206 value_bitpos (container) + bit_offset_in_container,
2207 value_contents (val),
2208 TYPE_LENGTH (value_type (component)) * TARGET_CHAR_BIT - bits,
2211 move_bits (value_contents_writeable (container) + offset_in_container,
2212 value_bitpos (container) + bit_offset_in_container,
2213 value_contents (val), 0, bits);
2216 /* The value of the element of array ARR at the ARITY indices given in IND.
2217 ARR may be either a simple array, GNAT array descriptor, or pointer
2221 ada_value_subscript (struct value *arr, int arity, struct value **ind)
2225 struct type *elt_type;
2227 elt = ada_coerce_to_simple_array (arr);
2229 elt_type = ada_check_typedef (value_type (elt));
2230 if (TYPE_CODE (elt_type) == TYPE_CODE_ARRAY
2231 && TYPE_FIELD_BITSIZE (elt_type, 0) > 0)
2232 return value_subscript_packed (elt, arity, ind);
2234 for (k = 0; k < arity; k += 1)
2236 if (TYPE_CODE (elt_type) != TYPE_CODE_ARRAY)
2237 error (_("too many subscripts (%d expected)"), k);
2238 elt = value_subscript (elt, value_pos_atr (ind[k]));
2243 /* Assuming ARR is a pointer to a standard GDB array of type TYPE, the
2244 value of the element of *ARR at the ARITY indices given in
2245 IND. Does not read the entire array into memory. */
2248 ada_value_ptr_subscript (struct value *arr, struct type *type, int arity,
2253 for (k = 0; k < arity; k += 1)
2258 if (TYPE_CODE (type) != TYPE_CODE_ARRAY)
2259 error (_("too many subscripts (%d expected)"), k);
2260 arr = value_cast (lookup_pointer_type (TYPE_TARGET_TYPE (type)),
2262 get_discrete_bounds (TYPE_INDEX_TYPE (type), &lwb, &upb);
2263 idx = value_pos_atr (ind[k]);
2265 idx = value_sub (idx, value_from_longest (builtin_type_int, lwb));
2266 arr = value_add (arr, idx);
2267 type = TYPE_TARGET_TYPE (type);
2270 return value_ind (arr);
2273 /* Given that ARRAY_PTR is a pointer or reference to an array of type TYPE (the
2274 actual type of ARRAY_PTR is ignored), returns a reference to
2275 the Ada slice of HIGH-LOW+1 elements starting at index LOW. The lower
2276 bound of this array is LOW, as per Ada rules. */
2277 static struct value *
2278 ada_value_slice_ptr (struct value *array_ptr, struct type *type,
2281 CORE_ADDR base = value_as_address (array_ptr)
2282 + ((low - TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type)))
2283 * TYPE_LENGTH (TYPE_TARGET_TYPE (type)));
2284 struct type *index_type =
2285 create_range_type (NULL, TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (type)),
2287 struct type *slice_type =
2288 create_array_type (NULL, TYPE_TARGET_TYPE (type), index_type);
2289 return value_from_pointer (lookup_reference_type (slice_type), base);
2293 static struct value *
2294 ada_value_slice (struct value *array, int low, int high)
2296 struct type *type = value_type (array);
2297 struct type *index_type =
2298 create_range_type (NULL, TYPE_INDEX_TYPE (type), low, high);
2299 struct type *slice_type =
2300 create_array_type (NULL, TYPE_TARGET_TYPE (type), index_type);
2301 return value_cast (slice_type, value_slice (array, low, high - low + 1));
2304 /* If type is a record type in the form of a standard GNAT array
2305 descriptor, returns the number of dimensions for type. If arr is a
2306 simple array, returns the number of "array of"s that prefix its
2307 type designation. Otherwise, returns 0. */
2310 ada_array_arity (struct type *type)
2317 type = desc_base_type (type);
2320 if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
2321 return desc_arity (desc_bounds_type (type));
2323 while (TYPE_CODE (type) == TYPE_CODE_ARRAY)
2326 type = ada_check_typedef (TYPE_TARGET_TYPE (type));
2332 /* If TYPE is a record type in the form of a standard GNAT array
2333 descriptor or a simple array type, returns the element type for
2334 TYPE after indexing by NINDICES indices, or by all indices if
2335 NINDICES is -1. Otherwise, returns NULL. */
2338 ada_array_element_type (struct type *type, int nindices)
2340 type = desc_base_type (type);
2342 if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
2345 struct type *p_array_type;
2347 p_array_type = desc_data_type (type);
2349 k = ada_array_arity (type);
2353 /* Initially p_array_type = elt_type(*)[]...(k times)...[]. */
2354 if (nindices >= 0 && k > nindices)
2356 p_array_type = TYPE_TARGET_TYPE (p_array_type);
2357 while (k > 0 && p_array_type != NULL)
2359 p_array_type = ada_check_typedef (TYPE_TARGET_TYPE (p_array_type));
2362 return p_array_type;
2364 else if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
2366 while (nindices != 0 && TYPE_CODE (type) == TYPE_CODE_ARRAY)
2368 type = TYPE_TARGET_TYPE (type);
2377 /* The type of nth index in arrays of given type (n numbering from 1).
2378 Does not examine memory. */
2381 ada_index_type (struct type *type, int n)
2383 struct type *result_type;
2385 type = desc_base_type (type);
2387 if (n > ada_array_arity (type))
2390 if (ada_is_simple_array_type (type))
2394 for (i = 1; i < n; i += 1)
2395 type = TYPE_TARGET_TYPE (type);
2396 result_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0));
2397 /* FIXME: The stabs type r(0,0);bound;bound in an array type
2398 has a target type of TYPE_CODE_UNDEF. We compensate here, but
2399 perhaps stabsread.c would make more sense. */
2400 if (result_type == NULL || TYPE_CODE (result_type) == TYPE_CODE_UNDEF)
2401 result_type = builtin_type_int;
2406 return desc_index_type (desc_bounds_type (type), n);
2409 /* Given that arr is an array type, returns the lower bound of the
2410 Nth index (numbering from 1) if WHICH is 0, and the upper bound if
2411 WHICH is 1. This returns bounds 0 .. -1 if ARR_TYPE is an
2412 array-descriptor type. If TYPEP is non-null, *TYPEP is set to the
2413 bounds type. It works for other arrays with bounds supplied by
2414 run-time quantities other than discriminants. */
2417 ada_array_bound_from_type (struct type * arr_type, int n, int which,
2418 struct type ** typep)
2421 struct type *index_type_desc;
2423 if (ada_is_packed_array_type (arr_type))
2424 arr_type = decode_packed_array_type (arr_type);
2426 if (arr_type == NULL || !ada_is_simple_array_type (arr_type))
2429 *typep = builtin_type_int;
2430 return (LONGEST) - which;
2433 if (TYPE_CODE (arr_type) == TYPE_CODE_PTR)
2434 type = TYPE_TARGET_TYPE (arr_type);
2438 index_type_desc = ada_find_parallel_type (type, "___XA");
2439 if (index_type_desc == NULL)
2441 struct type *range_type;
2442 struct type *index_type;
2446 type = TYPE_TARGET_TYPE (type);
2450 range_type = TYPE_INDEX_TYPE (type);
2451 index_type = TYPE_TARGET_TYPE (range_type);
2452 if (TYPE_CODE (index_type) == TYPE_CODE_UNDEF)
2453 index_type = builtin_type_long;
2455 *typep = index_type;
2457 (LONGEST) (which == 0
2458 ? TYPE_LOW_BOUND (range_type)
2459 : TYPE_HIGH_BOUND (range_type));
2463 struct type *index_type =
2464 to_fixed_range_type (TYPE_FIELD_NAME (index_type_desc, n - 1),
2465 NULL, TYPE_OBJFILE (arr_type));
2467 *typep = TYPE_TARGET_TYPE (index_type);
2469 (LONGEST) (which == 0
2470 ? TYPE_LOW_BOUND (index_type)
2471 : TYPE_HIGH_BOUND (index_type));
2475 /* Given that arr is an array value, returns the lower bound of the
2476 nth index (numbering from 1) if which is 0, and the upper bound if
2477 which is 1. This routine will also work for arrays with bounds
2478 supplied by run-time quantities other than discriminants. */
2481 ada_array_bound (struct value *arr, int n, int which)
2483 struct type *arr_type = value_type (arr);
2485 if (ada_is_packed_array_type (arr_type))
2486 return ada_array_bound (decode_packed_array (arr), n, which);
2487 else if (ada_is_simple_array_type (arr_type))
2490 LONGEST v = ada_array_bound_from_type (arr_type, n, which, &type);
2491 return value_from_longest (type, v);
2494 return desc_one_bound (desc_bounds (arr), n, which);
2497 /* Given that arr is an array value, returns the length of the
2498 nth index. This routine will also work for arrays with bounds
2499 supplied by run-time quantities other than discriminants.
2500 Does not work for arrays indexed by enumeration types with representation
2501 clauses at the moment. */
2504 ada_array_length (struct value *arr, int n)
2506 struct type *arr_type = ada_check_typedef (value_type (arr));
2508 if (ada_is_packed_array_type (arr_type))
2509 return ada_array_length (decode_packed_array (arr), n);
2511 if (ada_is_simple_array_type (arr_type))
2515 ada_array_bound_from_type (arr_type, n, 1, &type) -
2516 ada_array_bound_from_type (arr_type, n, 0, NULL) + 1;
2517 return value_from_longest (type, v);
2521 value_from_longest (builtin_type_int,
2522 value_as_long (desc_one_bound (desc_bounds (arr),
2524 - value_as_long (desc_one_bound (desc_bounds (arr),
2528 /* An empty array whose type is that of ARR_TYPE (an array type),
2529 with bounds LOW to LOW-1. */
2531 static struct value *
2532 empty_array (struct type *arr_type, int low)
2534 struct type *index_type =
2535 create_range_type (NULL, TYPE_TARGET_TYPE (TYPE_INDEX_TYPE (arr_type)),
2537 struct type *elt_type = ada_array_element_type (arr_type, 1);
2538 return allocate_value (create_array_type (NULL, elt_type, index_type));
2542 /* Name resolution */
2544 /* The "decoded" name for the user-definable Ada operator corresponding
2548 ada_decoded_op_name (enum exp_opcode op)
2552 for (i = 0; ada_opname_table[i].encoded != NULL; i += 1)
2554 if (ada_opname_table[i].op == op)
2555 return ada_opname_table[i].decoded;
2557 error (_("Could not find operator name for opcode"));
2561 /* Same as evaluate_type (*EXP), but resolves ambiguous symbol
2562 references (marked by OP_VAR_VALUE nodes in which the symbol has an
2563 undefined namespace) and converts operators that are
2564 user-defined into appropriate function calls. If CONTEXT_TYPE is
2565 non-null, it provides a preferred result type [at the moment, only
2566 type void has any effect---causing procedures to be preferred over
2567 functions in calls]. A null CONTEXT_TYPE indicates that a non-void
2568 return type is preferred. May change (expand) *EXP. */
2571 resolve (struct expression **expp, int void_context_p)
2575 resolve_subexp (expp, &pc, 1, void_context_p ? builtin_type_void : NULL);
2578 /* Resolve the operator of the subexpression beginning at
2579 position *POS of *EXPP. "Resolving" consists of replacing
2580 the symbols that have undefined namespaces in OP_VAR_VALUE nodes
2581 with their resolutions, replacing built-in operators with
2582 function calls to user-defined operators, where appropriate, and,
2583 when DEPROCEDURE_P is non-zero, converting function-valued variables
2584 into parameterless calls. May expand *EXPP. The CONTEXT_TYPE functions
2585 are as in ada_resolve, above. */
2587 static struct value *
2588 resolve_subexp (struct expression **expp, int *pos, int deprocedure_p,
2589 struct type *context_type)
2593 struct expression *exp; /* Convenience: == *expp. */
2594 enum exp_opcode op = (*expp)->elts[pc].opcode;
2595 struct value **argvec; /* Vector of operand types (alloca'ed). */
2596 int nargs; /* Number of operands. */
2603 /* Pass one: resolve operands, saving their types and updating *pos,
2608 if (exp->elts[pc + 3].opcode == OP_VAR_VALUE
2609 && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN)
2614 resolve_subexp (expp, pos, 0, NULL);
2616 nargs = longest_to_int (exp->elts[pc + 1].longconst);
2621 resolve_subexp (expp, pos, 0, NULL);
2626 resolve_subexp (expp, pos, 1, exp->elts[pc + 1].type);
2629 case OP_ATR_MODULUS:
2639 case TERNOP_IN_RANGE:
2640 case BINOP_IN_BOUNDS:
2646 case OP_DISCRETE_RANGE:
2648 ada_forward_operator_length (exp, pc, &oplen, &nargs);
2657 arg1 = resolve_subexp (expp, pos, 0, NULL);
2659 resolve_subexp (expp, pos, 1, NULL);
2661 resolve_subexp (expp, pos, 1, value_type (arg1));
2678 case BINOP_LOGICAL_AND:
2679 case BINOP_LOGICAL_OR:
2680 case BINOP_BITWISE_AND:
2681 case BINOP_BITWISE_IOR:
2682 case BINOP_BITWISE_XOR:
2685 case BINOP_NOTEQUAL:
2692 case BINOP_SUBSCRIPT:
2697 case UNOP_LOGICAL_NOT:
2713 case OP_INTERNALVAR:
2723 *pos += 4 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1);
2726 case STRUCTOP_STRUCT:
2727 *pos += 4 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1);
2740 error (_("Unexpected operator during name resolution"));
2743 argvec = (struct value * *) alloca (sizeof (struct value *) * (nargs + 1));
2744 for (i = 0; i < nargs; i += 1)
2745 argvec[i] = resolve_subexp (expp, pos, 1, NULL);
2749 /* Pass two: perform any resolution on principal operator. */
2756 if (SYMBOL_DOMAIN (exp->elts[pc + 2].symbol) == UNDEF_DOMAIN)
2758 struct ada_symbol_info *candidates;
2762 ada_lookup_symbol_list (SYMBOL_LINKAGE_NAME
2763 (exp->elts[pc + 2].symbol),
2764 exp->elts[pc + 1].block, VAR_DOMAIN,
2767 if (n_candidates > 1)
2769 /* Types tend to get re-introduced locally, so if there
2770 are any local symbols that are not types, first filter
2773 for (j = 0; j < n_candidates; j += 1)
2774 switch (SYMBOL_CLASS (candidates[j].sym))
2780 case LOC_REGPARM_ADDR:
2784 case LOC_BASEREG_ARG:
2786 case LOC_COMPUTED_ARG:
2792 if (j < n_candidates)
2795 while (j < n_candidates)
2797 if (SYMBOL_CLASS (candidates[j].sym) == LOC_TYPEDEF)
2799 candidates[j] = candidates[n_candidates - 1];
2808 if (n_candidates == 0)
2809 error (_("No definition found for %s"),
2810 SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol));
2811 else if (n_candidates == 1)
2813 else if (deprocedure_p
2814 && !is_nonfunction (candidates, n_candidates))
2816 i = ada_resolve_function
2817 (candidates, n_candidates, NULL, 0,
2818 SYMBOL_LINKAGE_NAME (exp->elts[pc + 2].symbol),
2821 error (_("Could not find a match for %s"),
2822 SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol));
2826 printf_filtered (_("Multiple matches for %s\n"),
2827 SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol));
2828 user_select_syms (candidates, n_candidates, 1);
2832 exp->elts[pc + 1].block = candidates[i].block;
2833 exp->elts[pc + 2].symbol = candidates[i].sym;
2834 if (innermost_block == NULL
2835 || contained_in (candidates[i].block, innermost_block))
2836 innermost_block = candidates[i].block;
2840 && (TYPE_CODE (SYMBOL_TYPE (exp->elts[pc + 2].symbol))
2843 replace_operator_with_call (expp, pc, 0, 0,
2844 exp->elts[pc + 2].symbol,
2845 exp->elts[pc + 1].block);
2852 if (exp->elts[pc + 3].opcode == OP_VAR_VALUE
2853 && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN)
2855 struct ada_symbol_info *candidates;
2859 ada_lookup_symbol_list (SYMBOL_LINKAGE_NAME
2860 (exp->elts[pc + 5].symbol),
2861 exp->elts[pc + 4].block, VAR_DOMAIN,
2863 if (n_candidates == 1)
2867 i = ada_resolve_function
2868 (candidates, n_candidates,
2870 SYMBOL_LINKAGE_NAME (exp->elts[pc + 5].symbol),
2873 error (_("Could not find a match for %s"),
2874 SYMBOL_PRINT_NAME (exp->elts[pc + 5].symbol));
2877 exp->elts[pc + 4].block = candidates[i].block;
2878 exp->elts[pc + 5].symbol = candidates[i].sym;
2879 if (innermost_block == NULL
2880 || contained_in (candidates[i].block, innermost_block))
2881 innermost_block = candidates[i].block;
2892 case BINOP_BITWISE_AND:
2893 case BINOP_BITWISE_IOR:
2894 case BINOP_BITWISE_XOR:
2896 case BINOP_NOTEQUAL:
2904 case UNOP_LOGICAL_NOT:
2906 if (possible_user_operator_p (op, argvec))
2908 struct ada_symbol_info *candidates;
2912 ada_lookup_symbol_list (ada_encode (ada_decoded_op_name (op)),
2913 (struct block *) NULL, VAR_DOMAIN,
2915 i = ada_resolve_function (candidates, n_candidates, argvec, nargs,
2916 ada_decoded_op_name (op), NULL);
2920 replace_operator_with_call (expp, pc, nargs, 1,
2921 candidates[i].sym, candidates[i].block);
2931 return evaluate_subexp_type (exp, pos);
2934 /* Return non-zero if formal type FTYPE matches actual type ATYPE. If
2935 MAY_DEREF is non-zero, the formal may be a pointer and the actual
2936 a non-pointer. A type of 'void' (which is never a valid expression type)
2937 by convention matches anything. */
2938 /* The term "match" here is rather loose. The match is heuristic and
2939 liberal. FIXME: TOO liberal, in fact. */
2942 ada_type_match (struct type *ftype, struct type *atype, int may_deref)
2944 ftype = ada_check_typedef (ftype);
2945 atype = ada_check_typedef (atype);
2947 if (TYPE_CODE (ftype) == TYPE_CODE_REF)
2948 ftype = TYPE_TARGET_TYPE (ftype);
2949 if (TYPE_CODE (atype) == TYPE_CODE_REF)
2950 atype = TYPE_TARGET_TYPE (atype);
2952 if (TYPE_CODE (ftype) == TYPE_CODE_VOID
2953 || TYPE_CODE (atype) == TYPE_CODE_VOID)
2956 switch (TYPE_CODE (ftype))
2961 if (TYPE_CODE (atype) == TYPE_CODE_PTR)
2962 return ada_type_match (TYPE_TARGET_TYPE (ftype),
2963 TYPE_TARGET_TYPE (atype), 0);
2966 && ada_type_match (TYPE_TARGET_TYPE (ftype), atype, 0));
2968 case TYPE_CODE_ENUM:
2969 case TYPE_CODE_RANGE:
2970 switch (TYPE_CODE (atype))
2973 case TYPE_CODE_ENUM:
2974 case TYPE_CODE_RANGE:
2980 case TYPE_CODE_ARRAY:
2981 return (TYPE_CODE (atype) == TYPE_CODE_ARRAY
2982 || ada_is_array_descriptor_type (atype));
2984 case TYPE_CODE_STRUCT:
2985 if (ada_is_array_descriptor_type (ftype))
2986 return (TYPE_CODE (atype) == TYPE_CODE_ARRAY
2987 || ada_is_array_descriptor_type (atype));
2989 return (TYPE_CODE (atype) == TYPE_CODE_STRUCT
2990 && !ada_is_array_descriptor_type (atype));
2992 case TYPE_CODE_UNION:
2994 return (TYPE_CODE (atype) == TYPE_CODE (ftype));
2998 /* Return non-zero if the formals of FUNC "sufficiently match" the
2999 vector of actual argument types ACTUALS of size N_ACTUALS. FUNC
3000 may also be an enumeral, in which case it is treated as a 0-
3001 argument function. */
3004 ada_args_match (struct symbol *func, struct value **actuals, int n_actuals)
3007 struct type *func_type = SYMBOL_TYPE (func);
3009 if (SYMBOL_CLASS (func) == LOC_CONST
3010 && TYPE_CODE (func_type) == TYPE_CODE_ENUM)
3011 return (n_actuals == 0);
3012 else if (func_type == NULL || TYPE_CODE (func_type) != TYPE_CODE_FUNC)
3015 if (TYPE_NFIELDS (func_type) != n_actuals)
3018 for (i = 0; i < n_actuals; i += 1)
3020 if (actuals[i] == NULL)
3024 struct type *ftype = ada_check_typedef (TYPE_FIELD_TYPE (func_type, i));
3025 struct type *atype = ada_check_typedef (value_type (actuals[i]));
3027 if (!ada_type_match (ftype, atype, 1))
3034 /* False iff function type FUNC_TYPE definitely does not produce a value
3035 compatible with type CONTEXT_TYPE. Conservatively returns 1 if
3036 FUNC_TYPE is not a valid function type with a non-null return type
3037 or an enumerated type. A null CONTEXT_TYPE indicates any non-void type. */
3040 return_match (struct type *func_type, struct type *context_type)
3042 struct type *return_type;
3044 if (func_type == NULL)
3047 if (TYPE_CODE (func_type) == TYPE_CODE_FUNC)
3048 return_type = base_type (TYPE_TARGET_TYPE (func_type));
3050 return_type = base_type (func_type);
3051 if (return_type == NULL)
3054 context_type = base_type (context_type);
3056 if (TYPE_CODE (return_type) == TYPE_CODE_ENUM)
3057 return context_type == NULL || return_type == context_type;
3058 else if (context_type == NULL)
3059 return TYPE_CODE (return_type) != TYPE_CODE_VOID;
3061 return TYPE_CODE (return_type) == TYPE_CODE (context_type);
3065 /* Returns the index in SYMS[0..NSYMS-1] that contains the symbol for the
3066 function (if any) that matches the types of the NARGS arguments in
3067 ARGS. If CONTEXT_TYPE is non-null and there is at least one match
3068 that returns that type, then eliminate matches that don't. If
3069 CONTEXT_TYPE is void and there is at least one match that does not
3070 return void, eliminate all matches that do.
3072 Asks the user if there is more than one match remaining. Returns -1
3073 if there is no such symbol or none is selected. NAME is used
3074 solely for messages. May re-arrange and modify SYMS in
3075 the process; the index returned is for the modified vector. */
3078 ada_resolve_function (struct ada_symbol_info syms[],
3079 int nsyms, struct value **args, int nargs,
3080 const char *name, struct type *context_type)
3083 int m; /* Number of hits */
3084 struct type *fallback;
3085 struct type *return_type;
3087 return_type = context_type;
3088 if (context_type == NULL)
3089 fallback = builtin_type_void;
3096 for (k = 0; k < nsyms; k += 1)
3098 struct type *type = ada_check_typedef (SYMBOL_TYPE (syms[k].sym));
3100 if (ada_args_match (syms[k].sym, args, nargs)
3101 && return_match (type, return_type))
3107 if (m > 0 || return_type == fallback)
3110 return_type = fallback;
3117 printf_filtered (_("Multiple matches for %s\n"), name);
3118 user_select_syms (syms, m, 1);
3124 /* Returns true (non-zero) iff decoded name N0 should appear before N1
3125 in a listing of choices during disambiguation (see sort_choices, below).
3126 The idea is that overloadings of a subprogram name from the
3127 same package should sort in their source order. We settle for ordering
3128 such symbols by their trailing number (__N or $N). */
3131 encoded_ordered_before (char *N0, char *N1)
3135 else if (N0 == NULL)
3140 for (k0 = strlen (N0) - 1; k0 > 0 && isdigit (N0[k0]); k0 -= 1)
3142 for (k1 = strlen (N1) - 1; k1 > 0 && isdigit (N1[k1]); k1 -= 1)
3144 if ((N0[k0] == '_' || N0[k0] == '$') && N0[k0 + 1] != '\000'
3145 && (N1[k1] == '_' || N1[k1] == '$') && N1[k1 + 1] != '\000')
3149 while (N0[n0] == '_' && n0 > 0 && N0[n0 - 1] == '_')
3152 while (N1[n1] == '_' && n1 > 0 && N1[n1 - 1] == '_')
3154 if (n0 == n1 && strncmp (N0, N1, n0) == 0)
3155 return (atoi (N0 + k0 + 1) < atoi (N1 + k1 + 1));
3157 return (strcmp (N0, N1) < 0);
3161 /* Sort SYMS[0..NSYMS-1] to put the choices in a canonical order by the
3165 sort_choices (struct ada_symbol_info syms[], int nsyms)
3168 for (i = 1; i < nsyms; i += 1)
3170 struct ada_symbol_info sym = syms[i];
3173 for (j = i - 1; j >= 0; j -= 1)
3175 if (encoded_ordered_before (SYMBOL_LINKAGE_NAME (syms[j].sym),
3176 SYMBOL_LINKAGE_NAME (sym.sym)))
3178 syms[j + 1] = syms[j];
3184 /* Given a list of NSYMS symbols in SYMS, select up to MAX_RESULTS>0
3185 by asking the user (if necessary), returning the number selected,
3186 and setting the first elements of SYMS items. Error if no symbols
3189 /* NOTE: Adapted from decode_line_2 in symtab.c, with which it ought
3190 to be re-integrated one of these days. */
3193 user_select_syms (struct ada_symbol_info *syms, int nsyms, int max_results)
3196 int *chosen = (int *) alloca (sizeof (int) * nsyms);
3198 int first_choice = (max_results == 1) ? 1 : 2;
3200 if (max_results < 1)
3201 error (_("Request to select 0 symbols!"));
3205 printf_unfiltered (_("[0] cancel\n"));
3206 if (max_results > 1)
3207 printf_unfiltered (_("[1] all\n"));
3209 sort_choices (syms, nsyms);
3211 for (i = 0; i < nsyms; i += 1)
3213 if (syms[i].sym == NULL)
3216 if (SYMBOL_CLASS (syms[i].sym) == LOC_BLOCK)
3218 struct symtab_and_line sal =
3219 find_function_start_sal (syms[i].sym, 1);
3220 if (sal.symtab == NULL)
3221 printf_unfiltered (_("[%d] %s at <no source file available>:%d\n"),
3223 SYMBOL_PRINT_NAME (syms[i].sym),
3226 printf_unfiltered (_("[%d] %s at %s:%d\n"), i + first_choice,
3227 SYMBOL_PRINT_NAME (syms[i].sym),
3228 sal.symtab->filename, sal.line);
3234 (SYMBOL_CLASS (syms[i].sym) == LOC_CONST
3235 && SYMBOL_TYPE (syms[i].sym) != NULL
3236 && TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) == TYPE_CODE_ENUM);
3237 struct symtab *symtab = symtab_for_sym (syms[i].sym);
3239 if (SYMBOL_LINE (syms[i].sym) != 0 && symtab != NULL)
3240 printf_unfiltered (_("[%d] %s at %s:%d\n"),
3242 SYMBOL_PRINT_NAME (syms[i].sym),
3243 symtab->filename, SYMBOL_LINE (syms[i].sym));
3244 else if (is_enumeral
3245 && TYPE_NAME (SYMBOL_TYPE (syms[i].sym)) != NULL)
3247 printf_unfiltered (("[%d] "), i + first_choice);
3248 ada_print_type (SYMBOL_TYPE (syms[i].sym), NULL,
3250 printf_unfiltered (_("'(%s) (enumeral)\n"),
3251 SYMBOL_PRINT_NAME (syms[i].sym));
3253 else if (symtab != NULL)
3254 printf_unfiltered (is_enumeral
3255 ? _("[%d] %s in %s (enumeral)\n")
3256 : _("[%d] %s at %s:?\n"),
3258 SYMBOL_PRINT_NAME (syms[i].sym),
3261 printf_unfiltered (is_enumeral
3262 ? _("[%d] %s (enumeral)\n")
3263 : _("[%d] %s at ?\n"),
3265 SYMBOL_PRINT_NAME (syms[i].sym));
3269 n_chosen = get_selections (chosen, nsyms, max_results, max_results > 1,
3272 for (i = 0; i < n_chosen; i += 1)
3273 syms[i] = syms[chosen[i]];
3278 /* Read and validate a set of numeric choices from the user in the
3279 range 0 .. N_CHOICES-1. Place the results in increasing
3280 order in CHOICES[0 .. N-1], and return N.
3282 The user types choices as a sequence of numbers on one line
3283 separated by blanks, encoding them as follows:
3285 + A choice of 0 means to cancel the selection, throwing an error.
3286 + If IS_ALL_CHOICE, a choice of 1 selects the entire set 0 .. N_CHOICES-1.
3287 + The user chooses k by typing k+IS_ALL_CHOICE+1.
3289 The user is not allowed to choose more than MAX_RESULTS values.
3291 ANNOTATION_SUFFIX, if present, is used to annotate the input
3292 prompts (for use with the -f switch). */
3295 get_selections (int *choices, int n_choices, int max_results,
3296 int is_all_choice, char *annotation_suffix)
3301 int first_choice = is_all_choice ? 2 : 1;
3303 prompt = getenv ("PS2");
3307 printf_unfiltered (("%s "), prompt);
3308 gdb_flush (gdb_stdout);
3310 args = command_line_input ((char *) NULL, 0, annotation_suffix);
3313 error_no_arg (_("one or more choice numbers"));
3317 /* Set choices[0 .. n_chosen-1] to the users' choices in ascending
3318 order, as given in args. Choices are validated. */
3324 while (isspace (*args))
3326 if (*args == '\0' && n_chosen == 0)
3327 error_no_arg (_("one or more choice numbers"));
3328 else if (*args == '\0')
3331 choice = strtol (args, &args2, 10);
3332 if (args == args2 || choice < 0
3333 || choice > n_choices + first_choice - 1)
3334 error (_("Argument must be choice number"));
3338 error (_("cancelled"));
3340 if (choice < first_choice)
3342 n_chosen = n_choices;
3343 for (j = 0; j < n_choices; j += 1)
3347 choice -= first_choice;
3349 for (j = n_chosen - 1; j >= 0 && choice < choices[j]; j -= 1)
3353 if (j < 0 || choice != choices[j])
3356 for (k = n_chosen - 1; k > j; k -= 1)
3357 choices[k + 1] = choices[k];
3358 choices[j + 1] = choice;
3363 if (n_chosen > max_results)
3364 error (_("Select no more than %d of the above"), max_results);
3369 /* Replace the operator of length OPLEN at position PC in *EXPP with a call
3370 on the function identified by SYM and BLOCK, and taking NARGS
3371 arguments. Update *EXPP as needed to hold more space. */
3374 replace_operator_with_call (struct expression **expp, int pc, int nargs,
3375 int oplen, struct symbol *sym,
3376 struct block *block)
3378 /* A new expression, with 6 more elements (3 for funcall, 4 for function
3379 symbol, -oplen for operator being replaced). */
3380 struct expression *newexp = (struct expression *)
3381 xmalloc (sizeof (struct expression)
3382 + EXP_ELEM_TO_BYTES ((*expp)->nelts + 7 - oplen));
3383 struct expression *exp = *expp;
3385 newexp->nelts = exp->nelts + 7 - oplen;
3386 newexp->language_defn = exp->language_defn;
3387 memcpy (newexp->elts, exp->elts, EXP_ELEM_TO_BYTES (pc));
3388 memcpy (newexp->elts + pc + 7, exp->elts + pc + oplen,
3389 EXP_ELEM_TO_BYTES (exp->nelts - pc - oplen));
3391 newexp->elts[pc].opcode = newexp->elts[pc + 2].opcode = OP_FUNCALL;
3392 newexp->elts[pc + 1].longconst = (LONGEST) nargs;
3394 newexp->elts[pc + 3].opcode = newexp->elts[pc + 6].opcode = OP_VAR_VALUE;
3395 newexp->elts[pc + 4].block = block;
3396 newexp->elts[pc + 5].symbol = sym;
3402 /* Type-class predicates */
3404 /* True iff TYPE is numeric (i.e., an INT, RANGE (of numeric type),
3408 numeric_type_p (struct type *type)
3414 switch (TYPE_CODE (type))
3419 case TYPE_CODE_RANGE:
3420 return (type == TYPE_TARGET_TYPE (type)
3421 || numeric_type_p (TYPE_TARGET_TYPE (type)));
3428 /* True iff TYPE is integral (an INT or RANGE of INTs). */
3431 integer_type_p (struct type *type)
3437 switch (TYPE_CODE (type))
3441 case TYPE_CODE_RANGE:
3442 return (type == TYPE_TARGET_TYPE (type)
3443 || integer_type_p (TYPE_TARGET_TYPE (type)));
3450 /* True iff TYPE is scalar (INT, RANGE, FLOAT, ENUM). */
3453 scalar_type_p (struct type *type)
3459 switch (TYPE_CODE (type))
3462 case TYPE_CODE_RANGE:
3463 case TYPE_CODE_ENUM:
3472 /* True iff TYPE is discrete (INT, RANGE, ENUM). */
3475 discrete_type_p (struct type *type)
3481 switch (TYPE_CODE (type))
3484 case TYPE_CODE_RANGE:
3485 case TYPE_CODE_ENUM:
3493 /* Returns non-zero if OP with operands in the vector ARGS could be
3494 a user-defined function. Errs on the side of pre-defined operators
3495 (i.e., result 0). */
3498 possible_user_operator_p (enum exp_opcode op, struct value *args[])
3500 struct type *type0 =
3501 (args[0] == NULL) ? NULL : ada_check_typedef (value_type (args[0]));
3502 struct type *type1 =
3503 (args[1] == NULL) ? NULL : ada_check_typedef (value_type (args[1]));
3517 return (!(numeric_type_p (type0) && numeric_type_p (type1)));
3521 case BINOP_BITWISE_AND:
3522 case BINOP_BITWISE_IOR:
3523 case BINOP_BITWISE_XOR:
3524 return (!(integer_type_p (type0) && integer_type_p (type1)));
3527 case BINOP_NOTEQUAL:
3532 return (!(scalar_type_p (type0) && scalar_type_p (type1)));
3535 return !ada_is_array_type (type0) || !ada_is_array_type (type1);
3538 return (!(numeric_type_p (type0) && integer_type_p (type1)));
3542 case UNOP_LOGICAL_NOT:
3544 return (!numeric_type_p (type0));
3551 /* NOTE: In the following, we assume that a renaming type's name may
3552 have an ___XD suffix. It would be nice if this went away at some
3555 /* If TYPE encodes a renaming, returns the renaming suffix, which
3556 is XR for an object renaming, XRP for a procedure renaming, XRE for
3557 an exception renaming, and XRS for a subprogram renaming. Returns
3558 NULL if NAME encodes none of these. */
3561 ada_renaming_type (struct type *type)
3563 if (type != NULL && TYPE_CODE (type) == TYPE_CODE_ENUM)
3565 const char *name = type_name_no_tag (type);
3566 const char *suffix = (name == NULL) ? NULL : strstr (name, "___XR");
3568 || (suffix[5] != '\000' && strchr ("PES_", suffix[5]) == NULL))
3577 /* Return non-zero iff SYM encodes an object renaming. */
3580 ada_is_object_renaming (struct symbol *sym)
3582 const char *renaming_type = ada_renaming_type (SYMBOL_TYPE (sym));
3583 return renaming_type != NULL
3584 && (renaming_type[2] == '\0' || renaming_type[2] == '_');
3587 /* Assuming that SYM encodes a non-object renaming, returns the original
3588 name of the renamed entity. The name is good until the end of
3592 ada_simple_renamed_entity (struct symbol *sym)
3595 const char *raw_name;
3599 type = SYMBOL_TYPE (sym);
3600 if (type == NULL || TYPE_NFIELDS (type) < 1)
3601 error (_("Improperly encoded renaming."));
3603 raw_name = TYPE_FIELD_NAME (type, 0);
3604 len = (raw_name == NULL ? 0 : strlen (raw_name)) - 5;
3606 error (_("Improperly encoded renaming."));
3608 result = xmalloc (len + 1);
3609 strncpy (result, raw_name, len);
3610 result[len] = '\000';
3616 /* Evaluation: Function Calls */
3618 /* Return an lvalue containing the value VAL. This is the identity on
3619 lvalues, and otherwise has the side-effect of pushing a copy of VAL
3620 on the stack, using and updating *SP as the stack pointer, and
3621 returning an lvalue whose VALUE_ADDRESS points to the copy. */
3623 static struct value *
3624 ensure_lval (struct value *val, CORE_ADDR *sp)
3626 if (! VALUE_LVAL (val))
3628 int len = TYPE_LENGTH (ada_check_typedef (value_type (val)));
3630 /* The following is taken from the structure-return code in
3631 call_function_by_hand. FIXME: Therefore, some refactoring seems
3633 if (gdbarch_inner_than (current_gdbarch, 1, 2))
3635 /* Stack grows downward. Align SP and VALUE_ADDRESS (val) after
3636 reserving sufficient space. */
3638 if (gdbarch_frame_align_p (current_gdbarch))
3639 *sp = gdbarch_frame_align (current_gdbarch, *sp);
3640 VALUE_ADDRESS (val) = *sp;
3644 /* Stack grows upward. Align the frame, allocate space, and
3645 then again, re-align the frame. */
3646 if (gdbarch_frame_align_p (current_gdbarch))
3647 *sp = gdbarch_frame_align (current_gdbarch, *sp);
3648 VALUE_ADDRESS (val) = *sp;
3650 if (gdbarch_frame_align_p (current_gdbarch))
3651 *sp = gdbarch_frame_align (current_gdbarch, *sp);
3654 write_memory (VALUE_ADDRESS (val), value_contents_raw (val), len);
3660 /* Return the value ACTUAL, converted to be an appropriate value for a
3661 formal of type FORMAL_TYPE. Use *SP as a stack pointer for
3662 allocating any necessary descriptors (fat pointers), or copies of
3663 values not residing in memory, updating it as needed. */
3665 static struct value *
3666 convert_actual (struct value *actual, struct type *formal_type0,
3669 struct type *actual_type = ada_check_typedef (value_type (actual));
3670 struct type *formal_type = ada_check_typedef (formal_type0);
3671 struct type *formal_target =
3672 TYPE_CODE (formal_type) == TYPE_CODE_PTR
3673 ? ada_check_typedef (TYPE_TARGET_TYPE (formal_type)) : formal_type;
3674 struct type *actual_target =
3675 TYPE_CODE (actual_type) == TYPE_CODE_PTR
3676 ? ada_check_typedef (TYPE_TARGET_TYPE (actual_type)) : actual_type;
3678 if (ada_is_array_descriptor_type (formal_target)
3679 && TYPE_CODE (actual_target) == TYPE_CODE_ARRAY)
3680 return make_array_descriptor (formal_type, actual, sp);
3681 else if (TYPE_CODE (formal_type) == TYPE_CODE_PTR)
3683 if (TYPE_CODE (formal_target) == TYPE_CODE_ARRAY
3684 && ada_is_array_descriptor_type (actual_target))
3685 return desc_data (actual);
3686 else if (TYPE_CODE (actual_type) != TYPE_CODE_PTR)
3688 if (VALUE_LVAL (actual) != lval_memory)
3691 actual_type = ada_check_typedef (value_type (actual));
3692 val = allocate_value (actual_type);
3693 memcpy ((char *) value_contents_raw (val),
3694 (char *) value_contents (actual),
3695 TYPE_LENGTH (actual_type));
3696 actual = ensure_lval (val, sp);
3698 return value_addr (actual);
3701 else if (TYPE_CODE (actual_type) == TYPE_CODE_PTR)
3702 return ada_value_ind (actual);
3708 /* Push a descriptor of type TYPE for array value ARR on the stack at
3709 *SP, updating *SP to reflect the new descriptor. Return either
3710 an lvalue representing the new descriptor, or (if TYPE is a pointer-
3711 to-descriptor type rather than a descriptor type), a struct value *
3712 representing a pointer to this descriptor. */
3714 static struct value *
3715 make_array_descriptor (struct type *type, struct value *arr, CORE_ADDR *sp)
3717 struct type *bounds_type = desc_bounds_type (type);
3718 struct type *desc_type = desc_base_type (type);
3719 struct value *descriptor = allocate_value (desc_type);
3720 struct value *bounds = allocate_value (bounds_type);
3723 for (i = ada_array_arity (ada_check_typedef (value_type (arr))); i > 0; i -= 1)
3725 modify_general_field (value_contents_writeable (bounds),
3726 value_as_long (ada_array_bound (arr, i, 0)),
3727 desc_bound_bitpos (bounds_type, i, 0),
3728 desc_bound_bitsize (bounds_type, i, 0));
3729 modify_general_field (value_contents_writeable (bounds),
3730 value_as_long (ada_array_bound (arr, i, 1)),
3731 desc_bound_bitpos (bounds_type, i, 1),
3732 desc_bound_bitsize (bounds_type, i, 1));
3735 bounds = ensure_lval (bounds, sp);
3737 modify_general_field (value_contents_writeable (descriptor),
3738 VALUE_ADDRESS (ensure_lval (arr, sp)),
3739 fat_pntr_data_bitpos (desc_type),
3740 fat_pntr_data_bitsize (desc_type));
3742 modify_general_field (value_contents_writeable (descriptor),
3743 VALUE_ADDRESS (bounds),
3744 fat_pntr_bounds_bitpos (desc_type),
3745 fat_pntr_bounds_bitsize (desc_type));
3747 descriptor = ensure_lval (descriptor, sp);
3749 if (TYPE_CODE (type) == TYPE_CODE_PTR)
3750 return value_addr (descriptor);
3756 /* Assuming a dummy frame has been established on the target, perform any
3757 conversions needed for calling function FUNC on the NARGS actual
3758 parameters in ARGS, other than standard C conversions. Does
3759 nothing if FUNC does not have Ada-style prototype data, or if NARGS
3760 does not match the number of arguments expected. Use *SP as a
3761 stack pointer for additional data that must be pushed, updating its
3765 ada_convert_actuals (struct value *func, int nargs, struct value *args[],
3770 if (TYPE_NFIELDS (value_type (func)) == 0
3771 || nargs != TYPE_NFIELDS (value_type (func)))
3774 for (i = 0; i < nargs; i += 1)
3776 convert_actual (args[i], TYPE_FIELD_TYPE (value_type (func), i), sp);
3779 /* Dummy definitions for an experimental caching module that is not
3780 * used in the public sources. */
3783 lookup_cached_symbol (const char *name, domain_enum namespace,
3784 struct symbol **sym, struct block **block,
3785 struct symtab **symtab)
3791 cache_symbol (const char *name, domain_enum namespace, struct symbol *sym,
3792 struct block *block, struct symtab *symtab)
3798 /* Return the result of a standard (literal, C-like) lookup of NAME in
3799 given DOMAIN, visible from lexical block BLOCK. */
3801 static struct symbol *
3802 standard_lookup (const char *name, const struct block *block,
3806 struct symtab *symtab;
3808 if (lookup_cached_symbol (name, domain, &sym, NULL, NULL))
3811 lookup_symbol_in_language (name, block, domain, language_c, 0, &symtab);
3812 cache_symbol (name, domain, sym, block_found, symtab);
3817 /* Non-zero iff there is at least one non-function/non-enumeral symbol
3818 in the symbol fields of SYMS[0..N-1]. We treat enumerals as functions,
3819 since they contend in overloading in the same way. */
3821 is_nonfunction (struct ada_symbol_info syms[], int n)
3825 for (i = 0; i < n; i += 1)
3826 if (TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) != TYPE_CODE_FUNC
3827 && (TYPE_CODE (SYMBOL_TYPE (syms[i].sym)) != TYPE_CODE_ENUM
3828 || SYMBOL_CLASS (syms[i].sym) != LOC_CONST))
3834 /* If true (non-zero), then TYPE0 and TYPE1 represent equivalent
3835 struct types. Otherwise, they may not. */
3838 equiv_types (struct type *type0, struct type *type1)
3842 if (type0 == NULL || type1 == NULL
3843 || TYPE_CODE (type0) != TYPE_CODE (type1))
3845 if ((TYPE_CODE (type0) == TYPE_CODE_STRUCT
3846 || TYPE_CODE (type0) == TYPE_CODE_ENUM)
3847 && ada_type_name (type0) != NULL && ada_type_name (type1) != NULL
3848 && strcmp (ada_type_name (type0), ada_type_name (type1)) == 0)
3854 /* True iff SYM0 represents the same entity as SYM1, or one that is
3855 no more defined than that of SYM1. */
3858 lesseq_defined_than (struct symbol *sym0, struct symbol *sym1)
3862 if (SYMBOL_DOMAIN (sym0) != SYMBOL_DOMAIN (sym1)
3863 || SYMBOL_CLASS (sym0) != SYMBOL_CLASS (sym1))
3866 switch (SYMBOL_CLASS (sym0))
3872 struct type *type0 = SYMBOL_TYPE (sym0);
3873 struct type *type1 = SYMBOL_TYPE (sym1);
3874 char *name0 = SYMBOL_LINKAGE_NAME (sym0);
3875 char *name1 = SYMBOL_LINKAGE_NAME (sym1);
3876 int len0 = strlen (name0);
3878 TYPE_CODE (type0) == TYPE_CODE (type1)
3879 && (equiv_types (type0, type1)
3880 || (len0 < strlen (name1) && strncmp (name0, name1, len0) == 0
3881 && strncmp (name1 + len0, "___XV", 5) == 0));
3884 return SYMBOL_VALUE (sym0) == SYMBOL_VALUE (sym1)
3885 && equiv_types (SYMBOL_TYPE (sym0), SYMBOL_TYPE (sym1));
3891 /* Append (SYM,BLOCK,SYMTAB) to the end of the array of struct ada_symbol_info
3892 records in OBSTACKP. Do nothing if SYM is a duplicate. */
3895 add_defn_to_vec (struct obstack *obstackp,
3897 struct block *block, struct symtab *symtab)
3901 struct ada_symbol_info *prevDefns = defns_collected (obstackp, 0);
3903 /* Do not try to complete stub types, as the debugger is probably
3904 already scanning all symbols matching a certain name at the
3905 time when this function is called. Trying to replace the stub
3906 type by its associated full type will cause us to restart a scan
3907 which may lead to an infinite recursion. Instead, the client
3908 collecting the matching symbols will end up collecting several
3909 matches, with at least one of them complete. It can then filter
3910 out the stub ones if needed. */
3912 for (i = num_defns_collected (obstackp) - 1; i >= 0; i -= 1)
3914 if (lesseq_defined_than (sym, prevDefns[i].sym))
3916 else if (lesseq_defined_than (prevDefns[i].sym, sym))
3918 prevDefns[i].sym = sym;
3919 prevDefns[i].block = block;
3920 prevDefns[i].symtab = symtab;
3926 struct ada_symbol_info info;
3930 info.symtab = symtab;
3931 obstack_grow (obstackp, &info, sizeof (struct ada_symbol_info));
3935 /* Number of ada_symbol_info structures currently collected in
3936 current vector in *OBSTACKP. */
3939 num_defns_collected (struct obstack *obstackp)
3941 return obstack_object_size (obstackp) / sizeof (struct ada_symbol_info);
3944 /* Vector of ada_symbol_info structures currently collected in current
3945 vector in *OBSTACKP. If FINISH, close off the vector and return
3946 its final address. */
3948 static struct ada_symbol_info *
3949 defns_collected (struct obstack *obstackp, int finish)
3952 return obstack_finish (obstackp);
3954 return (struct ada_symbol_info *) obstack_base (obstackp);
3957 /* Look, in partial_symtab PST, for symbol NAME in given namespace.
3958 Check the global symbols if GLOBAL, the static symbols if not.
3959 Do wild-card match if WILD. */
3961 static struct partial_symbol *
3962 ada_lookup_partial_symbol (struct partial_symtab *pst, const char *name,
3963 int global, domain_enum namespace, int wild)
3965 struct partial_symbol **start;
3966 int name_len = strlen (name);
3967 int length = (global ? pst->n_global_syms : pst->n_static_syms);
3976 pst->objfile->global_psymbols.list + pst->globals_offset :
3977 pst->objfile->static_psymbols.list + pst->statics_offset);
3981 for (i = 0; i < length; i += 1)
3983 struct partial_symbol *psym = start[i];
3985 if (SYMBOL_DOMAIN (psym) == namespace
3986 && wild_match (name, name_len, SYMBOL_LINKAGE_NAME (psym)))
4000 int M = (U + i) >> 1;
4001 struct partial_symbol *psym = start[M];
4002 if (SYMBOL_LINKAGE_NAME (psym)[0] < name[0])
4004 else if (SYMBOL_LINKAGE_NAME (psym)[0] > name[0])
4006 else if (strcmp (SYMBOL_LINKAGE_NAME (psym), name) < 0)
4017 struct partial_symbol *psym = start[i];
4019 if (SYMBOL_DOMAIN (psym) == namespace)
4021 int cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym), name_len);
4029 && is_name_suffix (SYMBOL_LINKAGE_NAME (psym)
4043 int M = (U + i) >> 1;
4044 struct partial_symbol *psym = start[M];
4045 if (SYMBOL_LINKAGE_NAME (psym)[0] < '_')
4047 else if (SYMBOL_LINKAGE_NAME (psym)[0] > '_')
4049 else if (strcmp (SYMBOL_LINKAGE_NAME (psym), "_ada_") < 0)
4060 struct partial_symbol *psym = start[i];
4062 if (SYMBOL_DOMAIN (psym) == namespace)
4066 cmp = (int) '_' - (int) SYMBOL_LINKAGE_NAME (psym)[0];
4069 cmp = strncmp ("_ada_", SYMBOL_LINKAGE_NAME (psym), 5);
4071 cmp = strncmp (name, SYMBOL_LINKAGE_NAME (psym) + 5,
4081 && is_name_suffix (SYMBOL_LINKAGE_NAME (psym)
4091 /* Find a symbol table containing symbol SYM or NULL if none. */
4093 static struct symtab *
4094 symtab_for_sym (struct symbol *sym)
4097 struct objfile *objfile;
4099 struct symbol *tmp_sym;
4100 struct dict_iterator iter;
4103 ALL_PRIMARY_SYMTABS (objfile, s)
4105 switch (SYMBOL_CLASS (sym))
4113 case LOC_CONST_BYTES:
4114 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
4115 ALL_BLOCK_SYMBOLS (b, iter, tmp_sym) if (sym == tmp_sym)
4117 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
4118 ALL_BLOCK_SYMBOLS (b, iter, tmp_sym) if (sym == tmp_sym)
4124 switch (SYMBOL_CLASS (sym))
4130 case LOC_REGPARM_ADDR:
4135 case LOC_BASEREG_ARG:
4137 case LOC_COMPUTED_ARG:
4138 for (j = FIRST_LOCAL_BLOCK;
4139 j < BLOCKVECTOR_NBLOCKS (BLOCKVECTOR (s)); j += 1)
4141 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), j);
4142 ALL_BLOCK_SYMBOLS (b, iter, tmp_sym) if (sym == tmp_sym)
4153 /* Return a minimal symbol matching NAME according to Ada decoding
4154 rules. Returns NULL if there is no such minimal symbol. Names
4155 prefixed with "standard__" are handled specially: "standard__" is
4156 first stripped off, and only static and global symbols are searched. */
4158 struct minimal_symbol *
4159 ada_lookup_simple_minsym (const char *name)
4161 struct objfile *objfile;
4162 struct minimal_symbol *msymbol;
4165 if (strncmp (name, "standard__", sizeof ("standard__") - 1) == 0)
4167 name += sizeof ("standard__") - 1;
4171 wild_match = (strstr (name, "__") == NULL);
4173 ALL_MSYMBOLS (objfile, msymbol)
4175 if (ada_match_name (SYMBOL_LINKAGE_NAME (msymbol), name, wild_match)
4176 && MSYMBOL_TYPE (msymbol) != mst_solib_trampoline)
4183 /* For all subprograms that statically enclose the subprogram of the
4184 selected frame, add symbols matching identifier NAME in DOMAIN
4185 and their blocks to the list of data in OBSTACKP, as for
4186 ada_add_block_symbols (q.v.). If WILD, treat as NAME with a
4190 add_symbols_from_enclosing_procs (struct obstack *obstackp,
4191 const char *name, domain_enum namespace,
4196 /* True if TYPE is definitely an artificial type supplied to a symbol
4197 for which no debugging information was given in the symbol file. */
4200 is_nondebugging_type (struct type *type)
4202 char *name = ada_type_name (type);
4203 return (name != NULL && strcmp (name, "<variable, no debug info>") == 0);
4206 /* Remove any non-debugging symbols in SYMS[0 .. NSYMS-1] that definitely
4207 duplicate other symbols in the list (The only case I know of where
4208 this happens is when object files containing stabs-in-ecoff are
4209 linked with files containing ordinary ecoff debugging symbols (or no
4210 debugging symbols)). Modifies SYMS to squeeze out deleted entries.
4211 Returns the number of items in the modified list. */
4214 remove_extra_symbols (struct ada_symbol_info *syms, int nsyms)
4221 if (SYMBOL_LINKAGE_NAME (syms[i].sym) != NULL
4222 && SYMBOL_CLASS (syms[i].sym) == LOC_STATIC
4223 && is_nondebugging_type (SYMBOL_TYPE (syms[i].sym)))
4225 for (j = 0; j < nsyms; j += 1)
4228 && SYMBOL_LINKAGE_NAME (syms[j].sym) != NULL
4229 && strcmp (SYMBOL_LINKAGE_NAME (syms[i].sym),
4230 SYMBOL_LINKAGE_NAME (syms[j].sym)) == 0
4231 && SYMBOL_CLASS (syms[i].sym) == SYMBOL_CLASS (syms[j].sym)
4232 && SYMBOL_VALUE_ADDRESS (syms[i].sym)
4233 == SYMBOL_VALUE_ADDRESS (syms[j].sym))
4236 for (k = i + 1; k < nsyms; k += 1)
4237 syms[k - 1] = syms[k];
4250 /* Given a type that corresponds to a renaming entity, use the type name
4251 to extract the scope (package name or function name, fully qualified,
4252 and following the GNAT encoding convention) where this renaming has been
4253 defined. The string returned needs to be deallocated after use. */
4256 xget_renaming_scope (struct type *renaming_type)
4258 /* The renaming types adhere to the following convention:
4259 <scope>__<rename>___<XR extension>.
4260 So, to extract the scope, we search for the "___XR" extension,
4261 and then backtrack until we find the first "__". */
4263 const char *name = type_name_no_tag (renaming_type);
4264 char *suffix = strstr (name, "___XR");
4269 /* Now, backtrack a bit until we find the first "__". Start looking
4270 at suffix - 3, as the <rename> part is at least one character long. */
4272 for (last = suffix - 3; last > name; last--)
4273 if (last[0] == '_' && last[1] == '_')
4276 /* Make a copy of scope and return it. */
4278 scope_len = last - name;
4279 scope = (char *) xmalloc ((scope_len + 1) * sizeof (char));
4281 strncpy (scope, name, scope_len);
4282 scope[scope_len] = '\0';
4287 /* Return nonzero if NAME corresponds to a package name. */
4290 is_package_name (const char *name)
4292 /* Here, We take advantage of the fact that no symbols are generated
4293 for packages, while symbols are generated for each function.
4294 So the condition for NAME represent a package becomes equivalent
4295 to NAME not existing in our list of symbols. There is only one
4296 small complication with library-level functions (see below). */
4300 /* If it is a function that has not been defined at library level,
4301 then we should be able to look it up in the symbols. */
4302 if (standard_lookup (name, NULL, VAR_DOMAIN) != NULL)
4305 /* Library-level function names start with "_ada_". See if function
4306 "_ada_" followed by NAME can be found. */
4308 /* Do a quick check that NAME does not contain "__", since library-level
4309 functions names cannot contain "__" in them. */
4310 if (strstr (name, "__") != NULL)
4313 fun_name = xstrprintf ("_ada_%s", name);
4315 return (standard_lookup (fun_name, NULL, VAR_DOMAIN) == NULL);
4318 /* Return nonzero if SYM corresponds to a renaming entity that is
4319 visible from FUNCTION_NAME. */
4322 renaming_is_visible (const struct symbol *sym, char *function_name)
4324 char *scope = xget_renaming_scope (SYMBOL_TYPE (sym));
4326 make_cleanup (xfree, scope);
4328 /* If the rename has been defined in a package, then it is visible. */
4329 if (is_package_name (scope))
4332 /* Check that the rename is in the current function scope by checking
4333 that its name starts with SCOPE. */
4335 /* If the function name starts with "_ada_", it means that it is
4336 a library-level function. Strip this prefix before doing the
4337 comparison, as the encoding for the renaming does not contain
4339 if (strncmp (function_name, "_ada_", 5) == 0)
4342 return (strncmp (function_name, scope, strlen (scope)) == 0);
4345 /* Iterates over the SYMS list and remove any entry that corresponds to
4346 a renaming entity that is not visible from the function associated
4350 GNAT emits a type following a specified encoding for each renaming
4351 entity. Unfortunately, STABS currently does not support the definition
4352 of types that are local to a given lexical block, so all renamings types
4353 are emitted at library level. As a consequence, if an application
4354 contains two renaming entities using the same name, and a user tries to
4355 print the value of one of these entities, the result of the ada symbol
4356 lookup will also contain the wrong renaming type.
4358 This function partially covers for this limitation by attempting to
4359 remove from the SYMS list renaming symbols that should be visible
4360 from CURRENT_BLOCK. However, there does not seem be a 100% reliable
4361 method with the current information available. The implementation
4362 below has a couple of limitations (FIXME: brobecker-2003-05-12):
4364 - When the user tries to print a rename in a function while there
4365 is another rename entity defined in a package: Normally, the
4366 rename in the function has precedence over the rename in the
4367 package, so the latter should be removed from the list. This is
4368 currently not the case.
4370 - This function will incorrectly remove valid renames if
4371 the CURRENT_BLOCK corresponds to a function which symbol name
4372 has been changed by an "Export" pragma. As a consequence,
4373 the user will be unable to print such rename entities. */
4376 remove_out_of_scope_renamings (struct ada_symbol_info *syms,
4377 int nsyms, const struct block *current_block)
4379 struct symbol *current_function;
4380 char *current_function_name;
4383 /* Extract the function name associated to CURRENT_BLOCK.
4384 Abort if unable to do so. */
4386 if (current_block == NULL)
4389 current_function = block_function (current_block);
4390 if (current_function == NULL)
4393 current_function_name = SYMBOL_LINKAGE_NAME (current_function);
4394 if (current_function_name == NULL)
4397 /* Check each of the symbols, and remove it from the list if it is
4398 a type corresponding to a renaming that is out of the scope of
4399 the current block. */
4404 if (ada_is_object_renaming (syms[i].sym)
4405 && !renaming_is_visible (syms[i].sym, current_function_name))
4408 for (j = i + 1; j < nsyms; j++)
4409 syms[j - 1] = syms[j];
4419 /* Find symbols in DOMAIN matching NAME0, in BLOCK0 and enclosing
4420 scope and in global scopes, returning the number of matches. Sets
4421 *RESULTS to point to a vector of (SYM,BLOCK,SYMTAB) triples,
4422 indicating the symbols found and the blocks and symbol tables (if
4423 any) in which they were found. This vector are transient---good only to
4424 the next call of ada_lookup_symbol_list. Any non-function/non-enumeral
4425 symbol match within the nest of blocks whose innermost member is BLOCK0,
4426 is the one match returned (no other matches in that or
4427 enclosing blocks is returned). If there are any matches in or
4428 surrounding BLOCK0, then these alone are returned. Otherwise, the
4429 search extends to global and file-scope (static) symbol tables.
4430 Names prefixed with "standard__" are handled specially: "standard__"
4431 is first stripped off, and only static and global symbols are searched. */
4434 ada_lookup_symbol_list (const char *name0, const struct block *block0,
4435 domain_enum namespace,
4436 struct ada_symbol_info **results)
4440 struct partial_symtab *ps;
4441 struct blockvector *bv;
4442 struct objfile *objfile;
4443 struct block *block;
4445 struct minimal_symbol *msymbol;
4451 obstack_free (&symbol_list_obstack, NULL);
4452 obstack_init (&symbol_list_obstack);
4456 /* Search specified block and its superiors. */
4458 wild_match = (strstr (name0, "__") == NULL);
4460 block = (struct block *) block0; /* FIXME: No cast ought to be
4461 needed, but adding const will
4462 have a cascade effect. */
4463 if (strncmp (name0, "standard__", sizeof ("standard__") - 1) == 0)
4467 name = name0 + sizeof ("standard__") - 1;
4471 while (block != NULL)
4474 ada_add_block_symbols (&symbol_list_obstack, block, name,
4475 namespace, NULL, NULL, wild_match);
4477 /* If we found a non-function match, assume that's the one. */
4478 if (is_nonfunction (defns_collected (&symbol_list_obstack, 0),
4479 num_defns_collected (&symbol_list_obstack)))
4482 block = BLOCK_SUPERBLOCK (block);
4485 /* If no luck so far, try to find NAME as a local symbol in some lexically
4486 enclosing subprogram. */
4487 if (num_defns_collected (&symbol_list_obstack) == 0 && block_depth > 2)
4488 add_symbols_from_enclosing_procs (&symbol_list_obstack,
4489 name, namespace, wild_match);
4491 /* If we found ANY matches among non-global symbols, we're done. */
4493 if (num_defns_collected (&symbol_list_obstack) > 0)
4497 if (lookup_cached_symbol (name0, namespace, &sym, &block, &s))
4500 add_defn_to_vec (&symbol_list_obstack, sym, block, s);
4504 /* Now add symbols from all global blocks: symbol tables, minimal symbol
4505 tables, and psymtab's. */
4507 ALL_PRIMARY_SYMTABS (objfile, s)
4510 bv = BLOCKVECTOR (s);
4511 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
4512 ada_add_block_symbols (&symbol_list_obstack, block, name, namespace,
4513 objfile, s, wild_match);
4516 if (namespace == VAR_DOMAIN)
4518 ALL_MSYMBOLS (objfile, msymbol)
4520 if (ada_match_name (SYMBOL_LINKAGE_NAME (msymbol), name, wild_match))
4522 switch (MSYMBOL_TYPE (msymbol))
4524 case mst_solib_trampoline:
4527 s = find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol));
4530 int ndefns0 = num_defns_collected (&symbol_list_obstack);
4532 bv = BLOCKVECTOR (s);
4533 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
4534 ada_add_block_symbols (&symbol_list_obstack, block,
4535 SYMBOL_LINKAGE_NAME (msymbol),
4536 namespace, objfile, s, wild_match);
4538 if (num_defns_collected (&symbol_list_obstack) == ndefns0)
4540 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
4541 ada_add_block_symbols (&symbol_list_obstack, block,
4542 SYMBOL_LINKAGE_NAME (msymbol),
4543 namespace, objfile, s,
4552 ALL_PSYMTABS (objfile, ps)
4556 && ada_lookup_partial_symbol (ps, name, 1, namespace, wild_match))
4558 s = PSYMTAB_TO_SYMTAB (ps);
4561 bv = BLOCKVECTOR (s);
4562 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
4563 ada_add_block_symbols (&symbol_list_obstack, block, name,
4564 namespace, objfile, s, wild_match);
4568 /* Now add symbols from all per-file blocks if we've gotten no hits
4569 (Not strictly correct, but perhaps better than an error).
4570 Do the symtabs first, then check the psymtabs. */
4572 if (num_defns_collected (&symbol_list_obstack) == 0)
4575 ALL_PRIMARY_SYMTABS (objfile, s)
4578 bv = BLOCKVECTOR (s);
4579 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
4580 ada_add_block_symbols (&symbol_list_obstack, block, name, namespace,
4581 objfile, s, wild_match);
4584 ALL_PSYMTABS (objfile, ps)
4588 && ada_lookup_partial_symbol (ps, name, 0, namespace, wild_match))
4590 s = PSYMTAB_TO_SYMTAB (ps);
4591 bv = BLOCKVECTOR (s);
4594 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
4595 ada_add_block_symbols (&symbol_list_obstack, block, name,
4596 namespace, objfile, s, wild_match);
4602 ndefns = num_defns_collected (&symbol_list_obstack);
4603 *results = defns_collected (&symbol_list_obstack, 1);
4605 ndefns = remove_extra_symbols (*results, ndefns);
4608 cache_symbol (name0, namespace, NULL, NULL, NULL);
4610 if (ndefns == 1 && cacheIfUnique)
4611 cache_symbol (name0, namespace, (*results)[0].sym, (*results)[0].block,
4612 (*results)[0].symtab);
4614 ndefns = remove_out_of_scope_renamings (*results, ndefns, block0);
4619 /* Return a symbol in DOMAIN matching NAME, in BLOCK0 and enclosing
4620 scope and in global scopes, or NULL if none. NAME is folded and
4621 encoded first. Otherwise, the result is as for ada_lookup_symbol_list,
4622 choosing the first symbol if there are multiple choices.
4623 *IS_A_FIELD_OF_THIS is set to 0 and *SYMTAB is set to the symbol
4624 table in which the symbol was found (in both cases, these
4625 assignments occur only if the pointers are non-null). */
4628 ada_lookup_symbol (const char *name, const struct block *block0,
4629 domain_enum namespace, int *is_a_field_of_this,
4630 struct symtab **symtab)
4632 struct ada_symbol_info *candidates;
4635 n_candidates = ada_lookup_symbol_list (ada_encode (ada_fold_name (name)),
4636 block0, namespace, &candidates);
4638 if (n_candidates == 0)
4641 if (is_a_field_of_this != NULL)
4642 *is_a_field_of_this = 0;
4646 *symtab = candidates[0].symtab;
4647 if (*symtab == NULL && candidates[0].block != NULL)
4649 struct objfile *objfile;
4652 struct blockvector *bv;
4654 /* Search the list of symtabs for one which contains the
4655 address of the start of this block. */
4656 ALL_PRIMARY_SYMTABS (objfile, s)
4658 bv = BLOCKVECTOR (s);
4659 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
4660 if (BLOCK_START (b) <= BLOCK_START (candidates[0].block)
4661 && BLOCK_END (b) > BLOCK_START (candidates[0].block))
4664 return fixup_symbol_section (candidates[0].sym, objfile);
4667 /* FIXME: brobecker/2004-11-12: I think that we should never
4668 reach this point. I don't see a reason why we would not
4669 find a symtab for a given block, so I suggest raising an
4670 internal_error exception here. Otherwise, we end up
4671 returning a symbol but no symtab, which certain parts of
4672 the code that rely (indirectly) on this function do not
4673 expect, eventually causing a SEGV. */
4674 return fixup_symbol_section (candidates[0].sym, NULL);
4677 return candidates[0].sym;
4680 static struct symbol *
4681 ada_lookup_symbol_nonlocal (const char *name,
4682 const char *linkage_name,
4683 const struct block *block,
4684 const domain_enum domain, struct symtab **symtab)
4686 if (linkage_name == NULL)
4687 linkage_name = name;
4688 return ada_lookup_symbol (linkage_name, block_static_block (block), domain,
4693 /* True iff STR is a possible encoded suffix of a normal Ada name
4694 that is to be ignored for matching purposes. Suffixes of parallel
4695 names (e.g., XVE) are not included here. Currently, the possible suffixes
4696 are given by either of the regular expression:
4698 (__[0-9]+)?[.$][0-9]+ [nested subprogram suffix, on platforms such
4700 ___[0-9]+ [nested subprogram suffix, on platforms such as HP/UX]
4701 _E[0-9]+[bs]$ [protected object entry suffixes]
4702 (X[nb]*)?((\$|__)[0-9](_?[0-9]+)|___(JM|LJM|X([FDBUP].*|R[^T]?)))?$
4706 is_name_suffix (const char *str)
4709 const char *matching;
4710 const int len = strlen (str);
4712 /* (__[0-9]+)?\.[0-9]+ */
4714 if (len > 3 && str[0] == '_' && str[1] == '_' && isdigit (str[2]))
4717 while (isdigit (matching[0]))
4719 if (matching[0] == '\0')
4723 if (matching[0] == '.' || matching[0] == '$')
4726 while (isdigit (matching[0]))
4728 if (matching[0] == '\0')
4733 if (len > 3 && str[0] == '_' && str[1] == '_' && str[2] == '_')
4736 while (isdigit (matching[0]))
4738 if (matching[0] == '\0')
4743 /* FIXME: brobecker/2005-09-23: Protected Object subprograms end
4744 with a N at the end. Unfortunately, the compiler uses the same
4745 convention for other internal types it creates. So treating
4746 all entity names that end with an "N" as a name suffix causes
4747 some regressions. For instance, consider the case of an enumerated
4748 type. To support the 'Image attribute, it creates an array whose
4750 Having a single character like this as a suffix carrying some
4751 information is a bit risky. Perhaps we should change the encoding
4752 to be something like "_N" instead. In the meantime, do not do
4753 the following check. */
4754 /* Protected Object Subprograms */
4755 if (len == 1 && str [0] == 'N')
4760 if (len > 3 && str[0] == '_' && str [1] == 'E' && isdigit (str[2]))
4763 while (isdigit (matching[0]))
4765 if ((matching[0] == 'b' || matching[0] == 's')
4766 && matching [1] == '\0')
4770 /* ??? We should not modify STR directly, as we are doing below. This
4771 is fine in this case, but may become problematic later if we find
4772 that this alternative did not work, and want to try matching
4773 another one from the begining of STR. Since we modified it, we
4774 won't be able to find the begining of the string anymore! */
4778 while (str[0] != '_' && str[0] != '\0')
4780 if (str[0] != 'n' && str[0] != 'b')
4785 if (str[0] == '\000')
4789 if (str[1] != '_' || str[2] == '\000')
4793 if (strcmp (str + 3, "JM") == 0)
4795 /* FIXME: brobecker/2004-09-30: GNAT will soon stop using
4796 the LJM suffix in favor of the JM one. But we will
4797 still accept LJM as a valid suffix for a reasonable
4798 amount of time, just to allow ourselves to debug programs
4799 compiled using an older version of GNAT. */
4800 if (strcmp (str + 3, "LJM") == 0)
4804 if (str[4] == 'F' || str[4] == 'D' || str[4] == 'B'
4805 || str[4] == 'U' || str[4] == 'P')
4807 if (str[4] == 'R' && str[5] != 'T')
4811 if (!isdigit (str[2]))
4813 for (k = 3; str[k] != '\0'; k += 1)
4814 if (!isdigit (str[k]) && str[k] != '_')
4818 if (str[0] == '$' && isdigit (str[1]))
4820 for (k = 2; str[k] != '\0'; k += 1)
4821 if (!isdigit (str[k]) && str[k] != '_')
4828 /* Return nonzero if the given string starts with a dot ('.')
4829 followed by zero or more digits.
4831 Note: brobecker/2003-11-10: A forward declaration has not been
4832 added at the begining of this file yet, because this function
4833 is only used to work around a problem found during wild matching
4834 when trying to match minimal symbol names against symbol names
4835 obtained from dwarf-2 data. This function is therefore currently
4836 only used in wild_match() and is likely to be deleted when the
4837 problem in dwarf-2 is fixed. */
4840 is_dot_digits_suffix (const char *str)
4846 while (isdigit (str[0]))
4848 return (str[0] == '\0');
4851 /* Return non-zero if NAME0 is a valid match when doing wild matching.
4852 Certain symbols appear at first to match, except that they turn out
4853 not to follow the Ada encoding and hence should not be used as a wild
4854 match of a given pattern. */
4857 is_valid_name_for_wild_match (const char *name0)
4859 const char *decoded_name = ada_decode (name0);
4862 for (i=0; decoded_name[i] != '\0'; i++)
4863 if (isalpha (decoded_name[i]) && !islower (decoded_name[i]))
4869 /* True if NAME represents a name of the form A1.A2....An, n>=1 and
4870 PATN[0..PATN_LEN-1] = Ak.Ak+1.....An for some k >= 1. Ignores
4871 informational suffixes of NAME (i.e., for which is_name_suffix is
4875 wild_match (const char *patn0, int patn_len, const char *name0)
4881 /* FIXME: brobecker/2003-11-10: For some reason, the symbol name
4882 stored in the symbol table for nested function names is sometimes
4883 different from the name of the associated entity stored in
4884 the dwarf-2 data: This is the case for nested subprograms, where
4885 the minimal symbol name contains a trailing ".[:digit:]+" suffix,
4886 while the symbol name from the dwarf-2 data does not.
4888 Although the DWARF-2 standard documents that entity names stored
4889 in the dwarf-2 data should be identical to the name as seen in
4890 the source code, GNAT takes a different approach as we already use
4891 a special encoding mechanism to convey the information so that
4892 a C debugger can still use the information generated to debug
4893 Ada programs. A corollary is that the symbol names in the dwarf-2
4894 data should match the names found in the symbol table. I therefore
4895 consider this issue as a compiler defect.
4897 Until the compiler is properly fixed, we work-around the problem
4898 by ignoring such suffixes during the match. We do so by making
4899 a copy of PATN0 and NAME0, and then by stripping such a suffix
4900 if present. We then perform the match on the resulting strings. */
4903 name_len = strlen (name0);
4905 name = (char *) alloca ((name_len + 1) * sizeof (char));
4906 strcpy (name, name0);
4907 dot = strrchr (name, '.');
4908 if (dot != NULL && is_dot_digits_suffix (dot))
4911 patn = (char *) alloca ((patn_len + 1) * sizeof (char));
4912 strncpy (patn, patn0, patn_len);
4913 patn[patn_len] = '\0';
4914 dot = strrchr (patn, '.');
4915 if (dot != NULL && is_dot_digits_suffix (dot))
4918 patn_len = dot - patn;
4922 /* Now perform the wild match. */
4924 name_len = strlen (name);
4925 if (name_len >= patn_len + 5 && strncmp (name, "_ada_", 5) == 0
4926 && strncmp (patn, name + 5, patn_len) == 0
4927 && is_name_suffix (name + patn_len + 5))
4930 while (name_len >= patn_len)
4932 if (strncmp (patn, name, patn_len) == 0
4933 && is_name_suffix (name + patn_len))
4934 return (is_valid_name_for_wild_match (name0));
4941 && name[0] != '.' && (name[0] != '_' || name[1] != '_'));
4946 if (!islower (name[2]))
4953 if (!islower (name[1]))
4964 /* Add symbols from BLOCK matching identifier NAME in DOMAIN to
4965 vector *defn_symbols, updating the list of symbols in OBSTACKP
4966 (if necessary). If WILD, treat as NAME with a wildcard prefix.
4967 OBJFILE is the section containing BLOCK.
4968 SYMTAB is recorded with each symbol added. */
4971 ada_add_block_symbols (struct obstack *obstackp,
4972 struct block *block, const char *name,
4973 domain_enum domain, struct objfile *objfile,
4974 struct symtab *symtab, int wild)
4976 struct dict_iterator iter;
4977 int name_len = strlen (name);
4978 /* A matching argument symbol, if any. */
4979 struct symbol *arg_sym;
4980 /* Set true when we find a matching non-argument symbol. */
4989 ALL_BLOCK_SYMBOLS (block, iter, sym)
4991 if (SYMBOL_DOMAIN (sym) == domain
4992 && wild_match (name, name_len, SYMBOL_LINKAGE_NAME (sym)))
4994 switch (SYMBOL_CLASS (sym))
5000 case LOC_REGPARM_ADDR:
5001 case LOC_BASEREG_ARG:
5002 case LOC_COMPUTED_ARG:
5005 case LOC_UNRESOLVED:
5009 add_defn_to_vec (obstackp,
5010 fixup_symbol_section (sym, objfile),
5019 ALL_BLOCK_SYMBOLS (block, iter, sym)
5021 if (SYMBOL_DOMAIN (sym) == domain)
5023 int cmp = strncmp (name, SYMBOL_LINKAGE_NAME (sym), name_len);
5025 && is_name_suffix (SYMBOL_LINKAGE_NAME (sym) + name_len))
5027 switch (SYMBOL_CLASS (sym))
5033 case LOC_REGPARM_ADDR:
5034 case LOC_BASEREG_ARG:
5035 case LOC_COMPUTED_ARG:
5038 case LOC_UNRESOLVED:
5042 add_defn_to_vec (obstackp,
5043 fixup_symbol_section (sym, objfile),
5052 if (!found_sym && arg_sym != NULL)
5054 add_defn_to_vec (obstackp,
5055 fixup_symbol_section (arg_sym, objfile),
5064 ALL_BLOCK_SYMBOLS (block, iter, sym)
5066 if (SYMBOL_DOMAIN (sym) == domain)
5070 cmp = (int) '_' - (int) SYMBOL_LINKAGE_NAME (sym)[0];
5073 cmp = strncmp ("_ada_", SYMBOL_LINKAGE_NAME (sym), 5);
5075 cmp = strncmp (name, SYMBOL_LINKAGE_NAME (sym) + 5,
5080 && is_name_suffix (SYMBOL_LINKAGE_NAME (sym) + name_len + 5))
5082 switch (SYMBOL_CLASS (sym))
5088 case LOC_REGPARM_ADDR:
5089 case LOC_BASEREG_ARG:
5090 case LOC_COMPUTED_ARG:
5093 case LOC_UNRESOLVED:
5097 add_defn_to_vec (obstackp,
5098 fixup_symbol_section (sym, objfile),
5106 /* NOTE: This really shouldn't be needed for _ada_ symbols.
5107 They aren't parameters, right? */
5108 if (!found_sym && arg_sym != NULL)
5110 add_defn_to_vec (obstackp,
5111 fixup_symbol_section (arg_sym, objfile),
5119 /* True if field number FIELD_NUM in struct or union type TYPE is supposed
5120 to be invisible to users. */
5123 ada_is_ignored_field (struct type *type, int field_num)
5125 if (field_num < 0 || field_num > TYPE_NFIELDS (type))
5129 const char *name = TYPE_FIELD_NAME (type, field_num);
5130 return (name == NULL
5131 || (name[0] == '_' && strncmp (name, "_parent", 7) != 0));
5135 /* True iff TYPE has a tag field. If REFOK, then TYPE may also be a
5136 pointer or reference type whose ultimate target has a tag field. */
5139 ada_is_tagged_type (struct type *type, int refok)
5141 return (ada_lookup_struct_elt_type (type, "_tag", refok, 1, NULL) != NULL);
5144 /* True iff TYPE represents the type of X'Tag */
5147 ada_is_tag_type (struct type *type)
5149 if (type == NULL || TYPE_CODE (type) != TYPE_CODE_PTR)
5153 const char *name = ada_type_name (TYPE_TARGET_TYPE (type));
5154 return (name != NULL
5155 && strcmp (name, "ada__tags__dispatch_table") == 0);
5159 /* The type of the tag on VAL. */
5162 ada_tag_type (struct value *val)
5164 return ada_lookup_struct_elt_type (value_type (val), "_tag", 1, 0, NULL);
5167 /* The value of the tag on VAL. */
5170 ada_value_tag (struct value *val)
5172 return ada_value_struct_elt (val, "_tag", 0);
5175 /* The value of the tag on the object of type TYPE whose contents are
5176 saved at VALADDR, if it is non-null, or is at memory address
5179 static struct value *
5180 value_tag_from_contents_and_address (struct type *type,
5181 const gdb_byte *valaddr,
5184 int tag_byte_offset, dummy1, dummy2;
5185 struct type *tag_type;
5186 if (find_struct_field ("_tag", type, 0, &tag_type, &tag_byte_offset,
5189 const gdb_byte *valaddr1 = ((valaddr == NULL)
5191 : valaddr + tag_byte_offset);
5192 CORE_ADDR address1 = (address == 0) ? 0 : address + tag_byte_offset;
5194 return value_from_contents_and_address (tag_type, valaddr1, address1);
5199 static struct type *
5200 type_from_tag (struct value *tag)
5202 const char *type_name = ada_tag_name (tag);
5203 if (type_name != NULL)
5204 return ada_find_any_type (ada_encode (type_name));
5215 static int ada_tag_name_1 (void *);
5216 static int ada_tag_name_2 (struct tag_args *);
5218 /* Wrapper function used by ada_tag_name. Given a struct tag_args*
5219 value ARGS, sets ARGS->name to the tag name of ARGS->tag.
5220 The value stored in ARGS->name is valid until the next call to
5224 ada_tag_name_1 (void *args0)
5226 struct tag_args *args = (struct tag_args *) args0;
5227 static char name[1024];
5231 val = ada_value_struct_elt (args->tag, "tsd", 1);
5233 return ada_tag_name_2 (args);
5234 val = ada_value_struct_elt (val, "expanded_name", 1);
5237 read_memory_string (value_as_address (val), name, sizeof (name) - 1);
5238 for (p = name; *p != '\0'; p += 1)
5245 /* Utility function for ada_tag_name_1 that tries the second
5246 representation for the dispatch table (in which there is no
5247 explicit 'tsd' field in the referent of the tag pointer, and instead
5248 the tsd pointer is stored just before the dispatch table. */
5251 ada_tag_name_2 (struct tag_args *args)
5253 struct type *info_type;
5254 static char name[1024];
5256 struct value *val, *valp;
5259 info_type = ada_find_any_type ("ada__tags__type_specific_data");
5260 if (info_type == NULL)
5262 info_type = lookup_pointer_type (lookup_pointer_type (info_type));
5263 valp = value_cast (info_type, args->tag);
5266 val = value_ind (value_add (valp, value_from_longest (builtin_type_int, -1)));
5269 val = ada_value_struct_elt (val, "expanded_name", 1);
5272 read_memory_string (value_as_address (val), name, sizeof (name) - 1);
5273 for (p = name; *p != '\0'; p += 1)
5280 /* The type name of the dynamic type denoted by the 'tag value TAG, as
5284 ada_tag_name (struct value *tag)
5286 struct tag_args args;
5287 if (!ada_is_tag_type (value_type (tag)))
5291 catch_errors (ada_tag_name_1, &args, NULL, RETURN_MASK_ALL);
5295 /* The parent type of TYPE, or NULL if none. */
5298 ada_parent_type (struct type *type)
5302 type = ada_check_typedef (type);
5304 if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT)
5307 for (i = 0; i < TYPE_NFIELDS (type); i += 1)
5308 if (ada_is_parent_field (type, i))
5309 return ada_check_typedef (TYPE_FIELD_TYPE (type, i));
5314 /* True iff field number FIELD_NUM of structure type TYPE contains the
5315 parent-type (inherited) fields of a derived type. Assumes TYPE is
5316 a structure type with at least FIELD_NUM+1 fields. */
5319 ada_is_parent_field (struct type *type, int field_num)
5321 const char *name = TYPE_FIELD_NAME (ada_check_typedef (type), field_num);
5322 return (name != NULL
5323 && (strncmp (name, "PARENT", 6) == 0
5324 || strncmp (name, "_parent", 7) == 0));
5327 /* True iff field number FIELD_NUM of structure type TYPE is a
5328 transparent wrapper field (which should be silently traversed when doing
5329 field selection and flattened when printing). Assumes TYPE is a
5330 structure type with at least FIELD_NUM+1 fields. Such fields are always
5334 ada_is_wrapper_field (struct type *type, int field_num)
5336 const char *name = TYPE_FIELD_NAME (type, field_num);
5337 return (name != NULL
5338 && (strncmp (name, "PARENT", 6) == 0
5339 || strcmp (name, "REP") == 0
5340 || strncmp (name, "_parent", 7) == 0
5341 || name[0] == 'S' || name[0] == 'R' || name[0] == 'O'));
5344 /* True iff field number FIELD_NUM of structure or union type TYPE
5345 is a variant wrapper. Assumes TYPE is a structure type with at least
5346 FIELD_NUM+1 fields. */
5349 ada_is_variant_part (struct type *type, int field_num)
5351 struct type *field_type = TYPE_FIELD_TYPE (type, field_num);
5352 return (TYPE_CODE (field_type) == TYPE_CODE_UNION
5353 || (is_dynamic_field (type, field_num)
5354 && (TYPE_CODE (TYPE_TARGET_TYPE (field_type))
5355 == TYPE_CODE_UNION)));
5358 /* Assuming that VAR_TYPE is a variant wrapper (type of the variant part)
5359 whose discriminants are contained in the record type OUTER_TYPE,
5360 returns the type of the controlling discriminant for the variant. */
5363 ada_variant_discrim_type (struct type *var_type, struct type *outer_type)
5365 char *name = ada_variant_discrim_name (var_type);
5367 ada_lookup_struct_elt_type (outer_type, name, 1, 1, NULL);
5369 return builtin_type_int;
5374 /* Assuming that TYPE is the type of a variant wrapper, and FIELD_NUM is a
5375 valid field number within it, returns 1 iff field FIELD_NUM of TYPE
5376 represents a 'when others' clause; otherwise 0. */
5379 ada_is_others_clause (struct type *type, int field_num)
5381 const char *name = TYPE_FIELD_NAME (type, field_num);
5382 return (name != NULL && name[0] == 'O');
5385 /* Assuming that TYPE0 is the type of the variant part of a record,
5386 returns the name of the discriminant controlling the variant.
5387 The value is valid until the next call to ada_variant_discrim_name. */
5390 ada_variant_discrim_name (struct type *type0)
5392 static char *result = NULL;
5393 static size_t result_len = 0;
5396 const char *discrim_end;
5397 const char *discrim_start;
5399 if (TYPE_CODE (type0) == TYPE_CODE_PTR)
5400 type = TYPE_TARGET_TYPE (type0);
5404 name = ada_type_name (type);
5406 if (name == NULL || name[0] == '\000')
5409 for (discrim_end = name + strlen (name) - 6; discrim_end != name;
5412 if (strncmp (discrim_end, "___XVN", 6) == 0)
5415 if (discrim_end == name)
5418 for (discrim_start = discrim_end; discrim_start != name + 3;
5421 if (discrim_start == name + 1)
5423 if ((discrim_start > name + 3
5424 && strncmp (discrim_start - 3, "___", 3) == 0)
5425 || discrim_start[-1] == '.')
5429 GROW_VECT (result, result_len, discrim_end - discrim_start + 1);
5430 strncpy (result, discrim_start, discrim_end - discrim_start);
5431 result[discrim_end - discrim_start] = '\0';
5435 /* Scan STR for a subtype-encoded number, beginning at position K.
5436 Put the position of the character just past the number scanned in
5437 *NEW_K, if NEW_K!=NULL. Put the scanned number in *R, if R!=NULL.
5438 Return 1 if there was a valid number at the given position, and 0
5439 otherwise. A "subtype-encoded" number consists of the absolute value
5440 in decimal, followed by the letter 'm' to indicate a negative number.
5441 Assumes 0m does not occur. */
5444 ada_scan_number (const char str[], int k, LONGEST * R, int *new_k)
5448 if (!isdigit (str[k]))
5451 /* Do it the hard way so as not to make any assumption about
5452 the relationship of unsigned long (%lu scan format code) and
5455 while (isdigit (str[k]))
5457 RU = RU * 10 + (str[k] - '0');
5464 *R = (-(LONGEST) (RU - 1)) - 1;
5470 /* NOTE on the above: Technically, C does not say what the results of
5471 - (LONGEST) RU or (LONGEST) -RU are for RU == largest positive
5472 number representable as a LONGEST (although either would probably work
5473 in most implementations). When RU>0, the locution in the then branch
5474 above is always equivalent to the negative of RU. */
5481 /* Assuming that TYPE is a variant part wrapper type (a VARIANTS field),
5482 and FIELD_NUM is a valid field number within it, returns 1 iff VAL is
5483 in the range encoded by field FIELD_NUM of TYPE; otherwise 0. */
5486 ada_in_variant (LONGEST val, struct type *type, int field_num)
5488 const char *name = TYPE_FIELD_NAME (type, field_num);
5501 if (!ada_scan_number (name, p + 1, &W, &p))
5510 if (!ada_scan_number (name, p + 1, &L, &p)
5511 || name[p] != 'T' || !ada_scan_number (name, p + 1, &U, &p))
5513 if (val >= L && val <= U)
5525 /* FIXME: Lots of redundancy below. Try to consolidate. */
5527 /* Given a value ARG1 (offset by OFFSET bytes) of a struct or union type
5528 ARG_TYPE, extract and return the value of one of its (non-static)
5529 fields. FIELDNO says which field. Differs from value_primitive_field
5530 only in that it can handle packed values of arbitrary type. */
5532 static struct value *
5533 ada_value_primitive_field (struct value *arg1, int offset, int fieldno,
5534 struct type *arg_type)
5538 arg_type = ada_check_typedef (arg_type);
5539 type = TYPE_FIELD_TYPE (arg_type, fieldno);
5541 /* Handle packed fields. */
5543 if (TYPE_FIELD_BITSIZE (arg_type, fieldno) != 0)
5545 int bit_pos = TYPE_FIELD_BITPOS (arg_type, fieldno);
5546 int bit_size = TYPE_FIELD_BITSIZE (arg_type, fieldno);
5548 return ada_value_primitive_packed_val (arg1, value_contents (arg1),
5549 offset + bit_pos / 8,
5550 bit_pos % 8, bit_size, type);
5553 return value_primitive_field (arg1, offset, fieldno, arg_type);
5556 /* Find field with name NAME in object of type TYPE. If found,
5557 set the following for each argument that is non-null:
5558 - *FIELD_TYPE_P to the field's type;
5559 - *BYTE_OFFSET_P to OFFSET + the byte offset of the field within
5560 an object of that type;
5561 - *BIT_OFFSET_P to the bit offset modulo byte size of the field;
5562 - *BIT_SIZE_P to its size in bits if the field is packed, and
5564 If INDEX_P is non-null, increment *INDEX_P by the number of source-visible
5565 fields up to but not including the desired field, or by the total
5566 number of fields if not found. A NULL value of NAME never
5567 matches; the function just counts visible fields in this case.
5569 Returns 1 if found, 0 otherwise. */
5572 find_struct_field (char *name, struct type *type, int offset,
5573 struct type **field_type_p,
5574 int *byte_offset_p, int *bit_offset_p, int *bit_size_p,
5579 type = ada_check_typedef (type);
5581 if (field_type_p != NULL)
5582 *field_type_p = NULL;
5583 if (byte_offset_p != NULL)
5585 if (bit_offset_p != NULL)
5587 if (bit_size_p != NULL)
5590 for (i = 0; i < TYPE_NFIELDS (type); i += 1)
5592 int bit_pos = TYPE_FIELD_BITPOS (type, i);
5593 int fld_offset = offset + bit_pos / 8;
5594 char *t_field_name = TYPE_FIELD_NAME (type, i);
5596 if (t_field_name == NULL)
5599 else if (name != NULL && field_name_match (t_field_name, name))
5601 int bit_size = TYPE_FIELD_BITSIZE (type, i);
5602 if (field_type_p != NULL)
5603 *field_type_p = TYPE_FIELD_TYPE (type, i);
5604 if (byte_offset_p != NULL)
5605 *byte_offset_p = fld_offset;
5606 if (bit_offset_p != NULL)
5607 *bit_offset_p = bit_pos % 8;
5608 if (bit_size_p != NULL)
5609 *bit_size_p = bit_size;
5612 else if (ada_is_wrapper_field (type, i))
5614 if (find_struct_field (name, TYPE_FIELD_TYPE (type, i), fld_offset,
5615 field_type_p, byte_offset_p, bit_offset_p,
5616 bit_size_p, index_p))
5619 else if (ada_is_variant_part (type, i))
5621 /* PNH: Wait. Do we ever execute this section, or is ARG always of
5624 struct type *field_type
5625 = ada_check_typedef (TYPE_FIELD_TYPE (type, i));
5627 for (j = 0; j < TYPE_NFIELDS (field_type); j += 1)
5629 if (find_struct_field (name, TYPE_FIELD_TYPE (field_type, j),
5631 + TYPE_FIELD_BITPOS (field_type, j) / 8,
5632 field_type_p, byte_offset_p,
5633 bit_offset_p, bit_size_p, index_p))
5637 else if (index_p != NULL)
5643 /* Number of user-visible fields in record type TYPE. */
5646 num_visible_fields (struct type *type)
5650 find_struct_field (NULL, type, 0, NULL, NULL, NULL, NULL, &n);
5654 /* Look for a field NAME in ARG. Adjust the address of ARG by OFFSET bytes,
5655 and search in it assuming it has (class) type TYPE.
5656 If found, return value, else return NULL.
5658 Searches recursively through wrapper fields (e.g., '_parent'). */
5660 static struct value *
5661 ada_search_struct_field (char *name, struct value *arg, int offset,
5665 type = ada_check_typedef (type);
5667 for (i = 0; i < TYPE_NFIELDS (type); i += 1)
5669 char *t_field_name = TYPE_FIELD_NAME (type, i);
5671 if (t_field_name == NULL)
5674 else if (field_name_match (t_field_name, name))
5675 return ada_value_primitive_field (arg, offset, i, type);
5677 else if (ada_is_wrapper_field (type, i))
5679 struct value *v = /* Do not let indent join lines here. */
5680 ada_search_struct_field (name, arg,
5681 offset + TYPE_FIELD_BITPOS (type, i) / 8,
5682 TYPE_FIELD_TYPE (type, i));
5687 else if (ada_is_variant_part (type, i))
5689 /* PNH: Do we ever get here? See find_struct_field. */
5691 struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type, i));
5692 int var_offset = offset + TYPE_FIELD_BITPOS (type, i) / 8;
5694 for (j = 0; j < TYPE_NFIELDS (field_type); j += 1)
5696 struct value *v = ada_search_struct_field /* Force line break. */
5698 var_offset + TYPE_FIELD_BITPOS (field_type, j) / 8,
5699 TYPE_FIELD_TYPE (field_type, j));
5708 static struct value *ada_index_struct_field_1 (int *, struct value *,
5709 int, struct type *);
5712 /* Return field #INDEX in ARG, where the index is that returned by
5713 * find_struct_field through its INDEX_P argument. Adjust the address
5714 * of ARG by OFFSET bytes, and search in it assuming it has (class) type TYPE.
5715 * If found, return value, else return NULL. */
5717 static struct value *
5718 ada_index_struct_field (int index, struct value *arg, int offset,
5721 return ada_index_struct_field_1 (&index, arg, offset, type);
5725 /* Auxiliary function for ada_index_struct_field. Like
5726 * ada_index_struct_field, but takes index from *INDEX_P and modifies
5729 static struct value *
5730 ada_index_struct_field_1 (int *index_p, struct value *arg, int offset,
5734 type = ada_check_typedef (type);
5736 for (i = 0; i < TYPE_NFIELDS (type); i += 1)
5738 if (TYPE_FIELD_NAME (type, i) == NULL)
5740 else if (ada_is_wrapper_field (type, i))
5742 struct value *v = /* Do not let indent join lines here. */
5743 ada_index_struct_field_1 (index_p, arg,
5744 offset + TYPE_FIELD_BITPOS (type, i) / 8,
5745 TYPE_FIELD_TYPE (type, i));
5750 else if (ada_is_variant_part (type, i))
5752 /* PNH: Do we ever get here? See ada_search_struct_field,
5753 find_struct_field. */
5754 error (_("Cannot assign this kind of variant record"));
5756 else if (*index_p == 0)
5757 return ada_value_primitive_field (arg, offset, i, type);
5764 /* Given ARG, a value of type (pointer or reference to a)*
5765 structure/union, extract the component named NAME from the ultimate
5766 target structure/union and return it as a value with its
5767 appropriate type. If ARG is a pointer or reference and the field
5768 is not packed, returns a reference to the field, otherwise the
5769 value of the field (an lvalue if ARG is an lvalue).
5771 The routine searches for NAME among all members of the structure itself
5772 and (recursively) among all members of any wrapper members
5775 If NO_ERR, then simply return NULL in case of error, rather than
5779 ada_value_struct_elt (struct value *arg, char *name, int no_err)
5781 struct type *t, *t1;
5785 t1 = t = ada_check_typedef (value_type (arg));
5786 if (TYPE_CODE (t) == TYPE_CODE_REF)
5788 t1 = TYPE_TARGET_TYPE (t);
5791 t1 = ada_check_typedef (t1);
5792 if (TYPE_CODE (t1) == TYPE_CODE_PTR)
5794 arg = coerce_ref (arg);
5799 while (TYPE_CODE (t) == TYPE_CODE_PTR)
5801 t1 = TYPE_TARGET_TYPE (t);
5804 t1 = ada_check_typedef (t1);
5805 if (TYPE_CODE (t1) == TYPE_CODE_PTR)
5807 arg = value_ind (arg);
5814 if (TYPE_CODE (t1) != TYPE_CODE_STRUCT && TYPE_CODE (t1) != TYPE_CODE_UNION)
5818 v = ada_search_struct_field (name, arg, 0, t);
5821 int bit_offset, bit_size, byte_offset;
5822 struct type *field_type;
5825 if (TYPE_CODE (t) == TYPE_CODE_PTR)
5826 address = value_as_address (arg);
5828 address = unpack_pointer (t, value_contents (arg));
5830 t1 = ada_to_fixed_type (ada_get_base_type (t1), NULL, address, NULL);
5831 if (find_struct_field (name, t1, 0,
5832 &field_type, &byte_offset, &bit_offset,
5837 if (TYPE_CODE (t) == TYPE_CODE_REF)
5838 arg = ada_coerce_ref (arg);
5840 arg = ada_value_ind (arg);
5841 v = ada_value_primitive_packed_val (arg, NULL, byte_offset,
5842 bit_offset, bit_size,
5846 v = value_from_pointer (lookup_reference_type (field_type),
5847 address + byte_offset);
5851 if (v != NULL || no_err)
5854 error (_("There is no member named %s."), name);
5860 error (_("Attempt to extract a component of a value that is not a record."));
5863 /* Given a type TYPE, look up the type of the component of type named NAME.
5864 If DISPP is non-null, add its byte displacement from the beginning of a
5865 structure (pointed to by a value) of type TYPE to *DISPP (does not
5866 work for packed fields).
5868 Matches any field whose name has NAME as a prefix, possibly
5871 TYPE can be either a struct or union. If REFOK, TYPE may also
5872 be a (pointer or reference)+ to a struct or union, and the
5873 ultimate target type will be searched.
5875 Looks recursively into variant clauses and parent types.
5877 If NOERR is nonzero, return NULL if NAME is not suitably defined or
5878 TYPE is not a type of the right kind. */
5880 static struct type *
5881 ada_lookup_struct_elt_type (struct type *type, char *name, int refok,
5882 int noerr, int *dispp)
5889 if (refok && type != NULL)
5892 type = ada_check_typedef (type);
5893 if (TYPE_CODE (type) != TYPE_CODE_PTR
5894 && TYPE_CODE (type) != TYPE_CODE_REF)
5896 type = TYPE_TARGET_TYPE (type);
5900 || (TYPE_CODE (type) != TYPE_CODE_STRUCT
5901 && TYPE_CODE (type) != TYPE_CODE_UNION))
5907 target_terminal_ours ();
5908 gdb_flush (gdb_stdout);
5910 error (_("Type (null) is not a structure or union type"));
5913 /* XXX: type_sprint */
5914 fprintf_unfiltered (gdb_stderr, _("Type "));
5915 type_print (type, "", gdb_stderr, -1);
5916 error (_(" is not a structure or union type"));
5921 type = to_static_fixed_type (type);
5923 for (i = 0; i < TYPE_NFIELDS (type); i += 1)
5925 char *t_field_name = TYPE_FIELD_NAME (type, i);
5929 if (t_field_name == NULL)
5932 else if (field_name_match (t_field_name, name))
5935 *dispp += TYPE_FIELD_BITPOS (type, i) / 8;
5936 return ada_check_typedef (TYPE_FIELD_TYPE (type, i));
5939 else if (ada_is_wrapper_field (type, i))
5942 t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name,
5947 *dispp += disp + TYPE_FIELD_BITPOS (type, i) / 8;
5952 else if (ada_is_variant_part (type, i))
5955 struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type, i));
5957 for (j = TYPE_NFIELDS (field_type) - 1; j >= 0; j -= 1)
5960 t = ada_lookup_struct_elt_type (TYPE_FIELD_TYPE (field_type, j),
5965 *dispp += disp + TYPE_FIELD_BITPOS (type, i) / 8;
5976 target_terminal_ours ();
5977 gdb_flush (gdb_stdout);
5980 /* XXX: type_sprint */
5981 fprintf_unfiltered (gdb_stderr, _("Type "));
5982 type_print (type, "", gdb_stderr, -1);
5983 error (_(" has no component named <null>"));
5987 /* XXX: type_sprint */
5988 fprintf_unfiltered (gdb_stderr, _("Type "));
5989 type_print (type, "", gdb_stderr, -1);
5990 error (_(" has no component named %s"), name);
5997 /* Assuming that VAR_TYPE is the type of a variant part of a record (a union),
5998 within a value of type OUTER_TYPE that is stored in GDB at
5999 OUTER_VALADDR, determine which variant clause (field number in VAR_TYPE,
6000 numbering from 0) is applicable. Returns -1 if none are. */
6003 ada_which_variant_applies (struct type *var_type, struct type *outer_type,
6004 const gdb_byte *outer_valaddr)
6009 struct type *discrim_type;
6010 char *discrim_name = ada_variant_discrim_name (var_type);
6011 LONGEST discrim_val;
6015 ada_lookup_struct_elt_type (outer_type, discrim_name, 1, 1, &disp);
6016 if (discrim_type == NULL)
6018 discrim_val = unpack_long (discrim_type, outer_valaddr + disp);
6021 for (i = 0; i < TYPE_NFIELDS (var_type); i += 1)
6023 if (ada_is_others_clause (var_type, i))
6025 else if (ada_in_variant (discrim_val, var_type, i))
6029 return others_clause;
6034 /* Dynamic-Sized Records */
6036 /* Strategy: The type ostensibly attached to a value with dynamic size
6037 (i.e., a size that is not statically recorded in the debugging
6038 data) does not accurately reflect the size or layout of the value.
6039 Our strategy is to convert these values to values with accurate,
6040 conventional types that are constructed on the fly. */
6042 /* There is a subtle and tricky problem here. In general, we cannot
6043 determine the size of dynamic records without its data. However,
6044 the 'struct value' data structure, which GDB uses to represent
6045 quantities in the inferior process (the target), requires the size
6046 of the type at the time of its allocation in order to reserve space
6047 for GDB's internal copy of the data. That's why the
6048 'to_fixed_xxx_type' routines take (target) addresses as parameters,
6049 rather than struct value*s.
6051 However, GDB's internal history variables ($1, $2, etc.) are
6052 struct value*s containing internal copies of the data that are not, in
6053 general, the same as the data at their corresponding addresses in
6054 the target. Fortunately, the types we give to these values are all
6055 conventional, fixed-size types (as per the strategy described
6056 above), so that we don't usually have to perform the
6057 'to_fixed_xxx_type' conversions to look at their values.
6058 Unfortunately, there is one exception: if one of the internal
6059 history variables is an array whose elements are unconstrained
6060 records, then we will need to create distinct fixed types for each
6061 element selected. */
6063 /* The upshot of all of this is that many routines take a (type, host
6064 address, target address) triple as arguments to represent a value.
6065 The host address, if non-null, is supposed to contain an internal
6066 copy of the relevant data; otherwise, the program is to consult the
6067 target at the target address. */
6069 /* Assuming that VAL0 represents a pointer value, the result of
6070 dereferencing it. Differs from value_ind in its treatment of
6071 dynamic-sized types. */
6074 ada_value_ind (struct value *val0)
6076 struct value *val = unwrap_value (value_ind (val0));
6077 return ada_to_fixed_value (val);
6080 /* The value resulting from dereferencing any "reference to"
6081 qualifiers on VAL0. */
6083 static struct value *
6084 ada_coerce_ref (struct value *val0)
6086 if (TYPE_CODE (value_type (val0)) == TYPE_CODE_REF)
6088 struct value *val = val0;
6089 val = coerce_ref (val);
6090 val = unwrap_value (val);
6091 return ada_to_fixed_value (val);
6097 /* Return OFF rounded upward if necessary to a multiple of
6098 ALIGNMENT (a power of 2). */
6101 align_value (unsigned int off, unsigned int alignment)
6103 return (off + alignment - 1) & ~(alignment - 1);
6106 /* Return the bit alignment required for field #F of template type TYPE. */
6109 field_alignment (struct type *type, int f)
6111 const char *name = TYPE_FIELD_NAME (type, f);
6115 /* The field name should never be null, unless the debugging information
6116 is somehow malformed. In this case, we assume the field does not
6117 require any alignment. */
6121 len = strlen (name);
6123 if (!isdigit (name[len - 1]))
6126 if (isdigit (name[len - 2]))
6127 align_offset = len - 2;
6129 align_offset = len - 1;
6131 if (align_offset < 7 || strncmp ("___XV", name + align_offset - 6, 5) != 0)
6132 return TARGET_CHAR_BIT;
6134 return atoi (name + align_offset) * TARGET_CHAR_BIT;
6137 /* Find a symbol named NAME. Ignores ambiguity. */
6140 ada_find_any_symbol (const char *name)
6144 sym = standard_lookup (name, get_selected_block (NULL), VAR_DOMAIN);
6145 if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
6148 sym = standard_lookup (name, NULL, STRUCT_DOMAIN);
6152 /* Find a type named NAME. Ignores ambiguity. */
6155 ada_find_any_type (const char *name)
6157 struct symbol *sym = ada_find_any_symbol (name);
6160 return SYMBOL_TYPE (sym);
6165 /* Given a symbol NAME and its associated BLOCK, search all symbols
6166 for its ___XR counterpart, which is the ``renaming'' symbol
6167 associated to NAME. Return this symbol if found, return
6171 ada_find_renaming_symbol (const char *name, struct block *block)
6173 const struct symbol *function_sym = block_function (block);
6176 if (function_sym != NULL)
6178 /* If the symbol is defined inside a function, NAME is not fully
6179 qualified. This means we need to prepend the function name
6180 as well as adding the ``___XR'' suffix to build the name of
6181 the associated renaming symbol. */
6182 char *function_name = SYMBOL_LINKAGE_NAME (function_sym);
6183 /* Function names sometimes contain suffixes used
6184 for instance to qualify nested subprograms. When building
6185 the XR type name, we need to make sure that this suffix is
6186 not included. So do not include any suffix in the function
6187 name length below. */
6188 const int function_name_len = ada_name_prefix_len (function_name);
6189 const int rename_len = function_name_len + 2 /* "__" */
6190 + strlen (name) + 6 /* "___XR\0" */ ;
6192 /* Strip the suffix if necessary. */
6193 function_name[function_name_len] = '\0';
6195 /* Library-level functions are a special case, as GNAT adds
6196 a ``_ada_'' prefix to the function name to avoid namespace
6197 pollution. However, the renaming symbol themselves do not
6198 have this prefix, so we need to skip this prefix if present. */
6199 if (function_name_len > 5 /* "_ada_" */
6200 && strstr (function_name, "_ada_") == function_name)
6201 function_name = function_name + 5;
6203 rename = (char *) alloca (rename_len * sizeof (char));
6204 sprintf (rename, "%s__%s___XR", function_name, name);
6208 const int rename_len = strlen (name) + 6;
6209 rename = (char *) alloca (rename_len * sizeof (char));
6210 sprintf (rename, "%s___XR", name);
6213 return ada_find_any_symbol (rename);
6216 /* Because of GNAT encoding conventions, several GDB symbols may match a
6217 given type name. If the type denoted by TYPE0 is to be preferred to
6218 that of TYPE1 for purposes of type printing, return non-zero;
6219 otherwise return 0. */
6222 ada_prefer_type (struct type *type0, struct type *type1)
6226 else if (type0 == NULL)
6228 else if (TYPE_CODE (type1) == TYPE_CODE_VOID)
6230 else if (TYPE_CODE (type0) == TYPE_CODE_VOID)
6232 else if (TYPE_NAME (type1) == NULL && TYPE_NAME (type0) != NULL)
6234 else if (ada_is_packed_array_type (type0))
6236 else if (ada_is_array_descriptor_type (type0)
6237 && !ada_is_array_descriptor_type (type1))
6239 else if (ada_renaming_type (type0) != NULL
6240 && ada_renaming_type (type1) == NULL)
6245 /* The name of TYPE, which is either its TYPE_NAME, or, if that is
6246 null, its TYPE_TAG_NAME. Null if TYPE is null. */
6249 ada_type_name (struct type *type)
6253 else if (TYPE_NAME (type) != NULL)
6254 return TYPE_NAME (type);
6256 return TYPE_TAG_NAME (type);
6259 /* Find a parallel type to TYPE whose name is formed by appending
6260 SUFFIX to the name of TYPE. */
6263 ada_find_parallel_type (struct type *type, const char *suffix)
6266 static size_t name_len = 0;
6268 char *typename = ada_type_name (type);
6270 if (typename == NULL)
6273 len = strlen (typename);
6275 GROW_VECT (name, name_len, len + strlen (suffix) + 1);
6277 strcpy (name, typename);
6278 strcpy (name + len, suffix);
6280 return ada_find_any_type (name);
6284 /* If TYPE is a variable-size record type, return the corresponding template
6285 type describing its fields. Otherwise, return NULL. */
6287 static struct type *
6288 dynamic_template_type (struct type *type)
6290 type = ada_check_typedef (type);
6292 if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT
6293 || ada_type_name (type) == NULL)
6297 int len = strlen (ada_type_name (type));
6298 if (len > 6 && strcmp (ada_type_name (type) + len - 6, "___XVE") == 0)
6301 return ada_find_parallel_type (type, "___XVE");
6305 /* Assuming that TEMPL_TYPE is a union or struct type, returns
6306 non-zero iff field FIELD_NUM of TEMPL_TYPE has dynamic size. */
6309 is_dynamic_field (struct type *templ_type, int field_num)
6311 const char *name = TYPE_FIELD_NAME (templ_type, field_num);
6313 && TYPE_CODE (TYPE_FIELD_TYPE (templ_type, field_num)) == TYPE_CODE_PTR
6314 && strstr (name, "___XVL") != NULL;
6317 /* The index of the variant field of TYPE, or -1 if TYPE does not
6318 represent a variant record type. */
6321 variant_field_index (struct type *type)
6325 if (type == NULL || TYPE_CODE (type) != TYPE_CODE_STRUCT)
6328 for (f = 0; f < TYPE_NFIELDS (type); f += 1)
6330 if (ada_is_variant_part (type, f))
6336 /* A record type with no fields. */
6338 static struct type *
6339 empty_record (struct objfile *objfile)
6341 struct type *type = alloc_type (objfile);
6342 TYPE_CODE (type) = TYPE_CODE_STRUCT;
6343 TYPE_NFIELDS (type) = 0;
6344 TYPE_FIELDS (type) = NULL;
6345 TYPE_NAME (type) = "<empty>";
6346 TYPE_TAG_NAME (type) = NULL;
6347 TYPE_FLAGS (type) = 0;
6348 TYPE_LENGTH (type) = 0;
6352 /* An ordinary record type (with fixed-length fields) that describes
6353 the value of type TYPE at VALADDR or ADDRESS (see comments at
6354 the beginning of this section) VAL according to GNAT conventions.
6355 DVAL0 should describe the (portion of a) record that contains any
6356 necessary discriminants. It should be NULL if value_type (VAL) is
6357 an outer-level type (i.e., as opposed to a branch of a variant.) A
6358 variant field (unless unchecked) is replaced by a particular branch
6361 If not KEEP_DYNAMIC_FIELDS, then all fields whose position or
6362 length are not statically known are discarded. As a consequence,
6363 VALADDR, ADDRESS and DVAL0 are ignored.
6365 NOTE: Limitations: For now, we assume that dynamic fields and
6366 variants occupy whole numbers of bytes. However, they need not be
6370 ada_template_to_fixed_record_type_1 (struct type *type,
6371 const gdb_byte *valaddr,
6372 CORE_ADDR address, struct value *dval0,
6373 int keep_dynamic_fields)
6375 struct value *mark = value_mark ();
6378 int nfields, bit_len;
6381 int fld_bit_len, bit_incr;
6384 /* Compute the number of fields in this record type that are going
6385 to be processed: unless keep_dynamic_fields, this includes only
6386 fields whose position and length are static will be processed. */
6387 if (keep_dynamic_fields)
6388 nfields = TYPE_NFIELDS (type);
6392 while (nfields < TYPE_NFIELDS (type)
6393 && !ada_is_variant_part (type, nfields)
6394 && !is_dynamic_field (type, nfields))
6398 rtype = alloc_type (TYPE_OBJFILE (type));
6399 TYPE_CODE (rtype) = TYPE_CODE_STRUCT;
6400 INIT_CPLUS_SPECIFIC (rtype);
6401 TYPE_NFIELDS (rtype) = nfields;
6402 TYPE_FIELDS (rtype) = (struct field *)
6403 TYPE_ALLOC (rtype, nfields * sizeof (struct field));
6404 memset (TYPE_FIELDS (rtype), 0, sizeof (struct field) * nfields);
6405 TYPE_NAME (rtype) = ada_type_name (type);
6406 TYPE_TAG_NAME (rtype) = NULL;
6407 TYPE_FLAGS (rtype) |= TYPE_FLAG_FIXED_INSTANCE;
6413 for (f = 0; f < nfields; f += 1)
6415 off = align_value (off, field_alignment (type, f))
6416 + TYPE_FIELD_BITPOS (type, f);
6417 TYPE_FIELD_BITPOS (rtype, f) = off;
6418 TYPE_FIELD_BITSIZE (rtype, f) = 0;
6420 if (ada_is_variant_part (type, f))
6423 fld_bit_len = bit_incr = 0;
6425 else if (is_dynamic_field (type, f))
6428 dval = value_from_contents_and_address (rtype, valaddr, address);
6432 TYPE_FIELD_TYPE (rtype, f) =
6435 (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, f))),
6436 cond_offset_host (valaddr, off / TARGET_CHAR_BIT),
6437 cond_offset_target (address, off / TARGET_CHAR_BIT), dval);
6438 TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f);
6439 bit_incr = fld_bit_len =
6440 TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, f)) * TARGET_CHAR_BIT;
6444 TYPE_FIELD_TYPE (rtype, f) = TYPE_FIELD_TYPE (type, f);
6445 TYPE_FIELD_NAME (rtype, f) = TYPE_FIELD_NAME (type, f);
6446 if (TYPE_FIELD_BITSIZE (type, f) > 0)
6447 bit_incr = fld_bit_len =
6448 TYPE_FIELD_BITSIZE (rtype, f) = TYPE_FIELD_BITSIZE (type, f);
6450 bit_incr = fld_bit_len =
6451 TYPE_LENGTH (TYPE_FIELD_TYPE (type, f)) * TARGET_CHAR_BIT;
6453 if (off + fld_bit_len > bit_len)
6454 bit_len = off + fld_bit_len;
6456 TYPE_LENGTH (rtype) =
6457 align_value (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT;
6460 /* We handle the variant part, if any, at the end because of certain
6461 odd cases in which it is re-ordered so as NOT the last field of
6462 the record. This can happen in the presence of representation
6464 if (variant_field >= 0)
6466 struct type *branch_type;
6468 off = TYPE_FIELD_BITPOS (rtype, variant_field);
6471 dval = value_from_contents_and_address (rtype, valaddr, address);
6476 to_fixed_variant_branch_type
6477 (TYPE_FIELD_TYPE (type, variant_field),
6478 cond_offset_host (valaddr, off / TARGET_CHAR_BIT),
6479 cond_offset_target (address, off / TARGET_CHAR_BIT), dval);
6480 if (branch_type == NULL)
6482 for (f = variant_field + 1; f < TYPE_NFIELDS (rtype); f += 1)
6483 TYPE_FIELDS (rtype)[f - 1] = TYPE_FIELDS (rtype)[f];
6484 TYPE_NFIELDS (rtype) -= 1;
6488 TYPE_FIELD_TYPE (rtype, variant_field) = branch_type;
6489 TYPE_FIELD_NAME (rtype, variant_field) = "S";
6491 TYPE_LENGTH (TYPE_FIELD_TYPE (rtype, variant_field)) *
6493 if (off + fld_bit_len > bit_len)
6494 bit_len = off + fld_bit_len;
6495 TYPE_LENGTH (rtype) =
6496 align_value (bit_len, TARGET_CHAR_BIT) / TARGET_CHAR_BIT;
6500 /* According to exp_dbug.ads, the size of TYPE for variable-size records
6501 should contain the alignment of that record, which should be a strictly
6502 positive value. If null or negative, then something is wrong, most
6503 probably in the debug info. In that case, we don't round up the size
6504 of the resulting type. If this record is not part of another structure,
6505 the current RTYPE length might be good enough for our purposes. */
6506 if (TYPE_LENGTH (type) <= 0)
6508 if (TYPE_NAME (rtype))
6509 warning (_("Invalid type size for `%s' detected: %d."),
6510 TYPE_NAME (rtype), TYPE_LENGTH (type));
6512 warning (_("Invalid type size for <unnamed> detected: %d."),
6513 TYPE_LENGTH (type));
6517 TYPE_LENGTH (rtype) = align_value (TYPE_LENGTH (rtype),
6518 TYPE_LENGTH (type));
6521 value_free_to_mark (mark);
6522 if (TYPE_LENGTH (rtype) > varsize_limit)
6523 error (_("record type with dynamic size is larger than varsize-limit"));
6527 /* As for ada_template_to_fixed_record_type_1 with KEEP_DYNAMIC_FIELDS
6530 static struct type *
6531 template_to_fixed_record_type (struct type *type, const gdb_byte *valaddr,
6532 CORE_ADDR address, struct value *dval0)
6534 return ada_template_to_fixed_record_type_1 (type, valaddr,
6538 /* An ordinary record type in which ___XVL-convention fields and
6539 ___XVU- and ___XVN-convention field types in TYPE0 are replaced with
6540 static approximations, containing all possible fields. Uses
6541 no runtime values. Useless for use in values, but that's OK,
6542 since the results are used only for type determinations. Works on both
6543 structs and unions. Representation note: to save space, we memorize
6544 the result of this function in the TYPE_TARGET_TYPE of the
6547 static struct type *
6548 template_to_static_fixed_type (struct type *type0)
6554 if (TYPE_TARGET_TYPE (type0) != NULL)
6555 return TYPE_TARGET_TYPE (type0);
6557 nfields = TYPE_NFIELDS (type0);
6560 for (f = 0; f < nfields; f += 1)
6562 struct type *field_type = ada_check_typedef (TYPE_FIELD_TYPE (type0, f));
6563 struct type *new_type;
6565 if (is_dynamic_field (type0, f))
6566 new_type = to_static_fixed_type (TYPE_TARGET_TYPE (field_type));
6568 new_type = to_static_fixed_type (field_type);
6569 if (type == type0 && new_type != field_type)
6571 TYPE_TARGET_TYPE (type0) = type = alloc_type (TYPE_OBJFILE (type0));
6572 TYPE_CODE (type) = TYPE_CODE (type0);
6573 INIT_CPLUS_SPECIFIC (type);
6574 TYPE_NFIELDS (type) = nfields;
6575 TYPE_FIELDS (type) = (struct field *)
6576 TYPE_ALLOC (type, nfields * sizeof (struct field));
6577 memcpy (TYPE_FIELDS (type), TYPE_FIELDS (type0),
6578 sizeof (struct field) * nfields);
6579 TYPE_NAME (type) = ada_type_name (type0);
6580 TYPE_TAG_NAME (type) = NULL;
6581 TYPE_FLAGS (type) |= TYPE_FLAG_FIXED_INSTANCE;
6582 TYPE_LENGTH (type) = 0;
6584 TYPE_FIELD_TYPE (type, f) = new_type;
6585 TYPE_FIELD_NAME (type, f) = TYPE_FIELD_NAME (type0, f);
6590 /* Given an object of type TYPE whose contents are at VALADDR and
6591 whose address in memory is ADDRESS, returns a revision of TYPE --
6592 a non-dynamic-sized record with a variant part -- in which
6593 the variant part is replaced with the appropriate branch. Looks
6594 for discriminant values in DVAL0, which can be NULL if the record
6595 contains the necessary discriminant values. */
6597 static struct type *
6598 to_record_with_fixed_variant_part (struct type *type, const gdb_byte *valaddr,
6599 CORE_ADDR address, struct value *dval0)
6601 struct value *mark = value_mark ();
6604 struct type *branch_type;
6605 int nfields = TYPE_NFIELDS (type);
6606 int variant_field = variant_field_index (type);
6608 if (variant_field == -1)
6612 dval = value_from_contents_and_address (type, valaddr, address);
6616 rtype = alloc_type (TYPE_OBJFILE (type));
6617 TYPE_CODE (rtype) = TYPE_CODE_STRUCT;
6618 INIT_CPLUS_SPECIFIC (rtype);
6619 TYPE_NFIELDS (rtype) = nfields;
6620 TYPE_FIELDS (rtype) =
6621 (struct field *) TYPE_ALLOC (rtype, nfields * sizeof (struct field));
6622 memcpy (TYPE_FIELDS (rtype), TYPE_FIELDS (type),
6623 sizeof (struct field) * nfields);
6624 TYPE_NAME (rtype) = ada_type_name (type);
6625 TYPE_TAG_NAME (rtype) = NULL;
6626 TYPE_FLAGS (rtype) |= TYPE_FLAG_FIXED_INSTANCE;
6627 TYPE_LENGTH (rtype) = TYPE_LENGTH (type);
6629 branch_type = to_fixed_variant_branch_type
6630 (TYPE_FIELD_TYPE (type, variant_field),
6631 cond_offset_host (valaddr,
6632 TYPE_FIELD_BITPOS (type, variant_field)
6634 cond_offset_target (address,
6635 TYPE_FIELD_BITPOS (type, variant_field)
6636 / TARGET_CHAR_BIT), dval);
6637 if (branch_type == NULL)
6640 for (f = variant_field + 1; f < nfields; f += 1)
6641 TYPE_FIELDS (rtype)[f - 1] = TYPE_FIELDS (rtype)[f];
6642 TYPE_NFIELDS (rtype) -= 1;
6646 TYPE_FIELD_TYPE (rtype, variant_field) = branch_type;
6647 TYPE_FIELD_NAME (rtype, variant_field) = "S";
6648 TYPE_FIELD_BITSIZE (rtype, variant_field) = 0;
6649 TYPE_LENGTH (rtype) += TYPE_LENGTH (branch_type);
6651 TYPE_LENGTH (rtype) -= TYPE_LENGTH (TYPE_FIELD_TYPE (type, variant_field));
6653 value_free_to_mark (mark);
6657 /* An ordinary record type (with fixed-length fields) that describes
6658 the value at (TYPE0, VALADDR, ADDRESS) [see explanation at
6659 beginning of this section]. Any necessary discriminants' values
6660 should be in DVAL, a record value; it may be NULL if the object
6661 at ADDR itself contains any necessary discriminant values.
6662 Additionally, VALADDR and ADDRESS may also be NULL if no discriminant
6663 values from the record are needed. Except in the case that DVAL,
6664 VALADDR, and ADDRESS are all 0 or NULL, a variant field (unless
6665 unchecked) is replaced by a particular branch of the variant.
6667 NOTE: the case in which DVAL and VALADDR are NULL and ADDRESS is 0
6668 is questionable and may be removed. It can arise during the
6669 processing of an unconstrained-array-of-record type where all the
6670 variant branches have exactly the same size. This is because in
6671 such cases, the compiler does not bother to use the XVS convention
6672 when encoding the record. I am currently dubious of this
6673 shortcut and suspect the compiler should be altered. FIXME. */
6675 static struct type *
6676 to_fixed_record_type (struct type *type0, const gdb_byte *valaddr,
6677 CORE_ADDR address, struct value *dval)
6679 struct type *templ_type;
6681 if (TYPE_FLAGS (type0) & TYPE_FLAG_FIXED_INSTANCE)
6684 templ_type = dynamic_template_type (type0);
6686 if (templ_type != NULL)
6687 return template_to_fixed_record_type (templ_type, valaddr, address, dval);
6688 else if (variant_field_index (type0) >= 0)
6690 if (dval == NULL && valaddr == NULL && address == 0)
6692 return to_record_with_fixed_variant_part (type0, valaddr, address,
6697 TYPE_FLAGS (type0) |= TYPE_FLAG_FIXED_INSTANCE;
6703 /* An ordinary record type (with fixed-length fields) that describes
6704 the value at (VAR_TYPE0, VALADDR, ADDRESS), where VAR_TYPE0 is a
6705 union type. Any necessary discriminants' values should be in DVAL,
6706 a record value. That is, this routine selects the appropriate
6707 branch of the union at ADDR according to the discriminant value
6708 indicated in the union's type name. */
6710 static struct type *
6711 to_fixed_variant_branch_type (struct type *var_type0, const gdb_byte *valaddr,
6712 CORE_ADDR address, struct value *dval)
6715 struct type *templ_type;
6716 struct type *var_type;
6718 if (TYPE_CODE (var_type0) == TYPE_CODE_PTR)
6719 var_type = TYPE_TARGET_TYPE (var_type0);
6721 var_type = var_type0;
6723 templ_type = ada_find_parallel_type (var_type, "___XVU");
6725 if (templ_type != NULL)
6726 var_type = templ_type;
6729 ada_which_variant_applies (var_type,
6730 value_type (dval), value_contents (dval));
6733 return empty_record (TYPE_OBJFILE (var_type));
6734 else if (is_dynamic_field (var_type, which))
6735 return to_fixed_record_type
6736 (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (var_type, which)),
6737 valaddr, address, dval);
6738 else if (variant_field_index (TYPE_FIELD_TYPE (var_type, which)) >= 0)
6740 to_fixed_record_type
6741 (TYPE_FIELD_TYPE (var_type, which), valaddr, address, dval);
6743 return TYPE_FIELD_TYPE (var_type, which);
6746 /* Assuming that TYPE0 is an array type describing the type of a value
6747 at ADDR, and that DVAL describes a record containing any
6748 discriminants used in TYPE0, returns a type for the value that
6749 contains no dynamic components (that is, no components whose sizes
6750 are determined by run-time quantities). Unless IGNORE_TOO_BIG is
6751 true, gives an error message if the resulting type's size is over
6754 static struct type *
6755 to_fixed_array_type (struct type *type0, struct value *dval,
6758 struct type *index_type_desc;
6759 struct type *result;
6761 if (ada_is_packed_array_type (type0) /* revisit? */
6762 || (TYPE_FLAGS (type0) & TYPE_FLAG_FIXED_INSTANCE))
6765 index_type_desc = ada_find_parallel_type (type0, "___XA");
6766 if (index_type_desc == NULL)
6768 struct type *elt_type0 = ada_check_typedef (TYPE_TARGET_TYPE (type0));
6769 /* NOTE: elt_type---the fixed version of elt_type0---should never
6770 depend on the contents of the array in properly constructed
6772 /* Create a fixed version of the array element type.
6773 We're not providing the address of an element here,
6774 and thus the actual object value cannot be inspected to do
6775 the conversion. This should not be a problem, since arrays of
6776 unconstrained objects are not allowed. In particular, all
6777 the elements of an array of a tagged type should all be of
6778 the same type specified in the debugging info. No need to
6779 consult the object tag. */
6780 struct type *elt_type = ada_to_fixed_type (elt_type0, 0, 0, dval);
6782 if (elt_type0 == elt_type)
6785 result = create_array_type (alloc_type (TYPE_OBJFILE (type0)),
6786 elt_type, TYPE_INDEX_TYPE (type0));
6791 struct type *elt_type0;
6794 for (i = TYPE_NFIELDS (index_type_desc); i > 0; i -= 1)
6795 elt_type0 = TYPE_TARGET_TYPE (elt_type0);
6797 /* NOTE: result---the fixed version of elt_type0---should never
6798 depend on the contents of the array in properly constructed
6800 /* Create a fixed version of the array element type.
6801 We're not providing the address of an element here,
6802 and thus the actual object value cannot be inspected to do
6803 the conversion. This should not be a problem, since arrays of
6804 unconstrained objects are not allowed. In particular, all
6805 the elements of an array of a tagged type should all be of
6806 the same type specified in the debugging info. No need to
6807 consult the object tag. */
6808 result = ada_to_fixed_type (ada_check_typedef (elt_type0), 0, 0, dval);
6809 for (i = TYPE_NFIELDS (index_type_desc) - 1; i >= 0; i -= 1)
6811 struct type *range_type =
6812 to_fixed_range_type (TYPE_FIELD_NAME (index_type_desc, i),
6813 dval, TYPE_OBJFILE (type0));
6814 result = create_array_type (alloc_type (TYPE_OBJFILE (type0)),
6815 result, range_type);
6817 if (!ignore_too_big && TYPE_LENGTH (result) > varsize_limit)
6818 error (_("array type with dynamic size is larger than varsize-limit"));
6821 TYPE_FLAGS (result) |= TYPE_FLAG_FIXED_INSTANCE;
6826 /* A standard type (containing no dynamically sized components)
6827 corresponding to TYPE for the value (TYPE, VALADDR, ADDRESS)
6828 DVAL describes a record containing any discriminants used in TYPE0,
6829 and may be NULL if there are none, or if the object of type TYPE at
6830 ADDRESS or in VALADDR contains these discriminants.
6832 In the case of tagged types, this function attempts to locate the object's
6833 tag and use it to compute the actual type. However, when ADDRESS is null,
6834 we cannot use it to determine the location of the tag, and therefore
6835 compute the tagged type's actual type. So we return the tagged type
6836 without consulting the tag. */
6839 ada_to_fixed_type (struct type *type, const gdb_byte *valaddr,
6840 CORE_ADDR address, struct value *dval)
6842 type = ada_check_typedef (type);
6843 switch (TYPE_CODE (type))
6847 case TYPE_CODE_STRUCT:
6849 struct type *static_type = to_static_fixed_type (type);
6851 /* If STATIC_TYPE is a tagged type and we know the object's address,
6852 then we can determine its tag, and compute the object's actual
6855 if (address != 0 && ada_is_tagged_type (static_type, 0))
6857 struct type *real_type =
6858 type_from_tag (value_tag_from_contents_and_address (static_type,
6861 if (real_type != NULL)
6864 return to_fixed_record_type (type, valaddr, address, NULL);
6866 case TYPE_CODE_ARRAY:
6867 return to_fixed_array_type (type, dval, 1);
6868 case TYPE_CODE_UNION:
6872 return to_fixed_variant_branch_type (type, valaddr, address, dval);
6876 /* A standard (static-sized) type corresponding as well as possible to
6877 TYPE0, but based on no runtime data. */
6879 static struct type *
6880 to_static_fixed_type (struct type *type0)
6887 if (TYPE_FLAGS (type0) & TYPE_FLAG_FIXED_INSTANCE)
6890 type0 = ada_check_typedef (type0);
6892 switch (TYPE_CODE (type0))
6896 case TYPE_CODE_STRUCT:
6897 type = dynamic_template_type (type0);
6899 return template_to_static_fixed_type (type);
6901 return template_to_static_fixed_type (type0);
6902 case TYPE_CODE_UNION:
6903 type = ada_find_parallel_type (type0, "___XVU");
6905 return template_to_static_fixed_type (type);
6907 return template_to_static_fixed_type (type0);
6911 /* A static approximation of TYPE with all type wrappers removed. */
6913 static struct type *
6914 static_unwrap_type (struct type *type)
6916 if (ada_is_aligner_type (type))
6918 struct type *type1 = TYPE_FIELD_TYPE (ada_check_typedef (type), 0);
6919 if (ada_type_name (type1) == NULL)
6920 TYPE_NAME (type1) = ada_type_name (type);
6922 return static_unwrap_type (type1);
6926 struct type *raw_real_type = ada_get_base_type (type);
6927 if (raw_real_type == type)
6930 return to_static_fixed_type (raw_real_type);
6934 /* In some cases, incomplete and private types require
6935 cross-references that are not resolved as records (for example,
6937 type FooP is access Foo;
6939 type Foo is array ...;
6940 ). In these cases, since there is no mechanism for producing
6941 cross-references to such types, we instead substitute for FooP a
6942 stub enumeration type that is nowhere resolved, and whose tag is
6943 the name of the actual type. Call these types "non-record stubs". */
6945 /* A type equivalent to TYPE that is not a non-record stub, if one
6946 exists, otherwise TYPE. */
6949 ada_check_typedef (struct type *type)
6951 CHECK_TYPEDEF (type);
6952 if (type == NULL || TYPE_CODE (type) != TYPE_CODE_ENUM
6953 || !TYPE_STUB (type)
6954 || TYPE_TAG_NAME (type) == NULL)
6958 char *name = TYPE_TAG_NAME (type);
6959 struct type *type1 = ada_find_any_type (name);
6960 return (type1 == NULL) ? type : type1;
6964 /* A value representing the data at VALADDR/ADDRESS as described by
6965 type TYPE0, but with a standard (static-sized) type that correctly
6966 describes it. If VAL0 is not NULL and TYPE0 already is a standard
6967 type, then return VAL0 [this feature is simply to avoid redundant
6968 creation of struct values]. */
6970 static struct value *
6971 ada_to_fixed_value_create (struct type *type0, CORE_ADDR address,
6974 struct type *type = ada_to_fixed_type (type0, 0, address, NULL);
6975 if (type == type0 && val0 != NULL)
6978 return value_from_contents_and_address (type, 0, address);
6981 /* A value representing VAL, but with a standard (static-sized) type
6982 that correctly describes it. Does not necessarily create a new
6985 static struct value *
6986 ada_to_fixed_value (struct value *val)
6988 return ada_to_fixed_value_create (value_type (val),
6989 VALUE_ADDRESS (val) + value_offset (val),
6993 /* A value representing VAL, but with a standard (static-sized) type
6994 chosen to approximate the real type of VAL as well as possible, but
6995 without consulting any runtime values. For Ada dynamic-sized
6996 types, therefore, the type of the result is likely to be inaccurate. */
6999 ada_to_static_fixed_value (struct value *val)
7002 to_static_fixed_type (static_unwrap_type (value_type (val)));
7003 if (type == value_type (val))
7006 return coerce_unspec_val_to_type (val, type);
7012 /* Table mapping attribute numbers to names.
7013 NOTE: Keep up to date with enum ada_attribute definition in ada-lang.h. */
7015 static const char *attribute_names[] = {
7033 ada_attribute_name (enum exp_opcode n)
7035 if (n >= OP_ATR_FIRST && n <= (int) OP_ATR_VAL)
7036 return attribute_names[n - OP_ATR_FIRST + 1];
7038 return attribute_names[0];
7041 /* Evaluate the 'POS attribute applied to ARG. */
7044 pos_atr (struct value *arg)
7046 struct type *type = value_type (arg);
7048 if (!discrete_type_p (type))
7049 error (_("'POS only defined on discrete types"));
7051 if (TYPE_CODE (type) == TYPE_CODE_ENUM)
7054 LONGEST v = value_as_long (arg);
7056 for (i = 0; i < TYPE_NFIELDS (type); i += 1)
7058 if (v == TYPE_FIELD_BITPOS (type, i))
7061 error (_("enumeration value is invalid: can't find 'POS"));
7064 return value_as_long (arg);
7067 static struct value *
7068 value_pos_atr (struct value *arg)
7070 return value_from_longest (builtin_type_int, pos_atr (arg));
7073 /* Evaluate the TYPE'VAL attribute applied to ARG. */
7075 static struct value *
7076 value_val_atr (struct type *type, struct value *arg)
7078 if (!discrete_type_p (type))
7079 error (_("'VAL only defined on discrete types"));
7080 if (!integer_type_p (value_type (arg)))
7081 error (_("'VAL requires integral argument"));
7083 if (TYPE_CODE (type) == TYPE_CODE_ENUM)
7085 long pos = value_as_long (arg);
7086 if (pos < 0 || pos >= TYPE_NFIELDS (type))
7087 error (_("argument to 'VAL out of range"));
7088 return value_from_longest (type, TYPE_FIELD_BITPOS (type, pos));
7091 return value_from_longest (type, value_as_long (arg));
7097 /* True if TYPE appears to be an Ada character type.
7098 [At the moment, this is true only for Character and Wide_Character;
7099 It is a heuristic test that could stand improvement]. */
7102 ada_is_character_type (struct type *type)
7104 const char *name = ada_type_name (type);
7107 && (TYPE_CODE (type) == TYPE_CODE_CHAR
7108 || TYPE_CODE (type) == TYPE_CODE_INT
7109 || TYPE_CODE (type) == TYPE_CODE_RANGE)
7110 && (strcmp (name, "character") == 0
7111 || strcmp (name, "wide_character") == 0
7112 || strcmp (name, "unsigned char") == 0);
7115 /* True if TYPE appears to be an Ada string type. */
7118 ada_is_string_type (struct type *type)
7120 type = ada_check_typedef (type);
7122 && TYPE_CODE (type) != TYPE_CODE_PTR
7123 && (ada_is_simple_array_type (type)
7124 || ada_is_array_descriptor_type (type))
7125 && ada_array_arity (type) == 1)
7127 struct type *elttype = ada_array_element_type (type, 1);
7129 return ada_is_character_type (elttype);
7136 /* True if TYPE is a struct type introduced by the compiler to force the
7137 alignment of a value. Such types have a single field with a
7138 distinctive name. */
7141 ada_is_aligner_type (struct type *type)
7143 type = ada_check_typedef (type);
7145 /* If we can find a parallel XVS type, then the XVS type should
7146 be used instead of this type. And hence, this is not an aligner
7148 if (ada_find_parallel_type (type, "___XVS") != NULL)
7151 return (TYPE_CODE (type) == TYPE_CODE_STRUCT
7152 && TYPE_NFIELDS (type) == 1
7153 && strcmp (TYPE_FIELD_NAME (type, 0), "F") == 0);
7156 /* If there is an ___XVS-convention type parallel to SUBTYPE, return
7157 the parallel type. */
7160 ada_get_base_type (struct type *raw_type)
7162 struct type *real_type_namer;
7163 struct type *raw_real_type;
7165 if (raw_type == NULL || TYPE_CODE (raw_type) != TYPE_CODE_STRUCT)
7168 real_type_namer = ada_find_parallel_type (raw_type, "___XVS");
7169 if (real_type_namer == NULL
7170 || TYPE_CODE (real_type_namer) != TYPE_CODE_STRUCT
7171 || TYPE_NFIELDS (real_type_namer) != 1)
7174 raw_real_type = ada_find_any_type (TYPE_FIELD_NAME (real_type_namer, 0));
7175 if (raw_real_type == NULL)
7178 return raw_real_type;
7181 /* The type of value designated by TYPE, with all aligners removed. */
7184 ada_aligned_type (struct type *type)
7186 if (ada_is_aligner_type (type))
7187 return ada_aligned_type (TYPE_FIELD_TYPE (type, 0));
7189 return ada_get_base_type (type);
7193 /* The address of the aligned value in an object at address VALADDR
7194 having type TYPE. Assumes ada_is_aligner_type (TYPE). */
7197 ada_aligned_value_addr (struct type *type, const gdb_byte *valaddr)
7199 if (ada_is_aligner_type (type))
7200 return ada_aligned_value_addr (TYPE_FIELD_TYPE (type, 0),
7202 TYPE_FIELD_BITPOS (type,
7203 0) / TARGET_CHAR_BIT);
7210 /* The printed representation of an enumeration literal with encoded
7211 name NAME. The value is good to the next call of ada_enum_name. */
7213 ada_enum_name (const char *name)
7215 static char *result;
7216 static size_t result_len = 0;
7219 /* First, unqualify the enumeration name:
7220 1. Search for the last '.' character. If we find one, then skip
7221 all the preceeding characters, the unqualified name starts
7222 right after that dot.
7223 2. Otherwise, we may be debugging on a target where the compiler
7224 translates dots into "__". Search forward for double underscores,
7225 but stop searching when we hit an overloading suffix, which is
7226 of the form "__" followed by digits. */
7228 tmp = strrchr (name, '.');
7233 while ((tmp = strstr (name, "__")) != NULL)
7235 if (isdigit (tmp[2]))
7245 if (name[1] == 'U' || name[1] == 'W')
7247 if (sscanf (name + 2, "%x", &v) != 1)
7253 GROW_VECT (result, result_len, 16);
7254 if (isascii (v) && isprint (v))
7255 sprintf (result, "'%c'", v);
7256 else if (name[1] == 'U')
7257 sprintf (result, "[\"%02x\"]", v);
7259 sprintf (result, "[\"%04x\"]", v);
7265 tmp = strstr (name, "__");
7267 tmp = strstr (name, "$");
7270 GROW_VECT (result, result_len, tmp - name + 1);
7271 strncpy (result, name, tmp - name);
7272 result[tmp - name] = '\0';
7280 static struct value *
7281 evaluate_subexp (struct type *expect_type, struct expression *exp, int *pos,
7284 return (*exp->language_defn->la_exp_desc->evaluate_exp)
7285 (expect_type, exp, pos, noside);
7288 /* Evaluate the subexpression of EXP starting at *POS as for
7289 evaluate_type, updating *POS to point just past the evaluated
7292 static struct value *
7293 evaluate_subexp_type (struct expression *exp, int *pos)
7295 return (*exp->language_defn->la_exp_desc->evaluate_exp)
7296 (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS);
7299 /* If VAL is wrapped in an aligner or subtype wrapper, return the
7302 static struct value *
7303 unwrap_value (struct value *val)
7305 struct type *type = ada_check_typedef (value_type (val));
7306 if (ada_is_aligner_type (type))
7308 struct value *v = value_struct_elt (&val, NULL, "F",
7309 NULL, "internal structure");
7310 struct type *val_type = ada_check_typedef (value_type (v));
7311 if (ada_type_name (val_type) == NULL)
7312 TYPE_NAME (val_type) = ada_type_name (type);
7314 return unwrap_value (v);
7318 struct type *raw_real_type =
7319 ada_check_typedef (ada_get_base_type (type));
7321 if (type == raw_real_type)
7325 coerce_unspec_val_to_type
7326 (val, ada_to_fixed_type (raw_real_type, 0,
7327 VALUE_ADDRESS (val) + value_offset (val),
7332 static struct value *
7333 cast_to_fixed (struct type *type, struct value *arg)
7337 if (type == value_type (arg))
7339 else if (ada_is_fixed_point_type (value_type (arg)))
7340 val = ada_float_to_fixed (type,
7341 ada_fixed_to_float (value_type (arg),
7342 value_as_long (arg)));
7346 value_as_double (value_cast (builtin_type_double, value_copy (arg)));
7347 val = ada_float_to_fixed (type, argd);
7350 return value_from_longest (type, val);
7353 static struct value *
7354 cast_from_fixed_to_double (struct value *arg)
7356 DOUBLEST val = ada_fixed_to_float (value_type (arg),
7357 value_as_long (arg));
7358 return value_from_double (builtin_type_double, val);
7361 /* Coerce VAL as necessary for assignment to an lval of type TYPE, and
7362 return the converted value. */
7364 static struct value *
7365 coerce_for_assign (struct type *type, struct value *val)
7367 struct type *type2 = value_type (val);
7371 type2 = ada_check_typedef (type2);
7372 type = ada_check_typedef (type);
7374 if (TYPE_CODE (type2) == TYPE_CODE_PTR
7375 && TYPE_CODE (type) == TYPE_CODE_ARRAY)
7377 val = ada_value_ind (val);
7378 type2 = value_type (val);
7381 if (TYPE_CODE (type2) == TYPE_CODE_ARRAY
7382 && TYPE_CODE (type) == TYPE_CODE_ARRAY)
7384 if (TYPE_LENGTH (type2) != TYPE_LENGTH (type)
7385 || TYPE_LENGTH (TYPE_TARGET_TYPE (type2))
7386 != TYPE_LENGTH (TYPE_TARGET_TYPE (type2)))
7387 error (_("Incompatible types in assignment"));
7388 deprecated_set_value_type (val, type);
7393 static struct value *
7394 ada_value_binop (struct value *arg1, struct value *arg2, enum exp_opcode op)
7397 struct type *type1, *type2;
7400 arg1 = coerce_ref (arg1);
7401 arg2 = coerce_ref (arg2);
7402 type1 = base_type (ada_check_typedef (value_type (arg1)));
7403 type2 = base_type (ada_check_typedef (value_type (arg2)));
7405 if (TYPE_CODE (type1) != TYPE_CODE_INT
7406 || TYPE_CODE (type2) != TYPE_CODE_INT)
7407 return value_binop (arg1, arg2, op);
7416 return value_binop (arg1, arg2, op);
7419 v2 = value_as_long (arg2);
7421 error (_("second operand of %s must not be zero."), op_string (op));
7423 if (TYPE_UNSIGNED (type1) || op == BINOP_MOD)
7424 return value_binop (arg1, arg2, op);
7426 v1 = value_as_long (arg1);
7431 if (!TRUNCATION_TOWARDS_ZERO && v1 * (v1 % v2) < 0)
7432 v += v > 0 ? -1 : 1;
7440 /* Should not reach this point. */
7444 val = allocate_value (type1);
7445 store_unsigned_integer (value_contents_raw (val),
7446 TYPE_LENGTH (value_type (val)), v);
7451 ada_value_equal (struct value *arg1, struct value *arg2)
7453 if (ada_is_direct_array_type (value_type (arg1))
7454 || ada_is_direct_array_type (value_type (arg2)))
7456 arg1 = ada_coerce_to_simple_array (arg1);
7457 arg2 = ada_coerce_to_simple_array (arg2);
7458 if (TYPE_CODE (value_type (arg1)) != TYPE_CODE_ARRAY
7459 || TYPE_CODE (value_type (arg2)) != TYPE_CODE_ARRAY)
7460 error (_("Attempt to compare array with non-array"));
7461 /* FIXME: The following works only for types whose
7462 representations use all bits (no padding or undefined bits)
7463 and do not have user-defined equality. */
7465 TYPE_LENGTH (value_type (arg1)) == TYPE_LENGTH (value_type (arg2))
7466 && memcmp (value_contents (arg1), value_contents (arg2),
7467 TYPE_LENGTH (value_type (arg1))) == 0;
7469 return value_equal (arg1, arg2);
7472 /* Total number of component associations in the aggregate starting at
7473 index PC in EXP. Assumes that index PC is the start of an
7477 num_component_specs (struct expression *exp, int pc)
7480 m = exp->elts[pc + 1].longconst;
7483 for (i = 0; i < m; i += 1)
7485 switch (exp->elts[pc].opcode)
7491 n += exp->elts[pc + 1].longconst;
7494 ada_evaluate_subexp (NULL, exp, &pc, EVAL_SKIP);
7499 /* Assign the result of evaluating EXP starting at *POS to the INDEXth
7500 component of LHS (a simple array or a record), updating *POS past
7501 the expression, assuming that LHS is contained in CONTAINER. Does
7502 not modify the inferior's memory, nor does it modify LHS (unless
7503 LHS == CONTAINER). */
7506 assign_component (struct value *container, struct value *lhs, LONGEST index,
7507 struct expression *exp, int *pos)
7509 struct value *mark = value_mark ();
7511 if (TYPE_CODE (value_type (lhs)) == TYPE_CODE_ARRAY)
7513 struct value *index_val = value_from_longest (builtin_type_int, index);
7514 elt = unwrap_value (ada_value_subscript (lhs, 1, &index_val));
7518 elt = ada_index_struct_field (index, lhs, 0, value_type (lhs));
7519 elt = ada_to_fixed_value (unwrap_value (elt));
7522 if (exp->elts[*pos].opcode == OP_AGGREGATE)
7523 assign_aggregate (container, elt, exp, pos, EVAL_NORMAL);
7525 value_assign_to_component (container, elt,
7526 ada_evaluate_subexp (NULL, exp, pos,
7529 value_free_to_mark (mark);
7532 /* Assuming that LHS represents an lvalue having a record or array
7533 type, and EXP->ELTS[*POS] is an OP_AGGREGATE, evaluate an assignment
7534 of that aggregate's value to LHS, advancing *POS past the
7535 aggregate. NOSIDE is as for evaluate_subexp. CONTAINER is an
7536 lvalue containing LHS (possibly LHS itself). Does not modify
7537 the inferior's memory, nor does it modify the contents of
7538 LHS (unless == CONTAINER). Returns the modified CONTAINER. */
7540 static struct value *
7541 assign_aggregate (struct value *container,
7542 struct value *lhs, struct expression *exp,
7543 int *pos, enum noside noside)
7545 struct type *lhs_type;
7546 int n = exp->elts[*pos+1].longconst;
7547 LONGEST low_index, high_index;
7550 int max_indices, num_indices;
7551 int is_array_aggregate;
7553 struct value *mark = value_mark ();
7556 if (noside != EVAL_NORMAL)
7559 for (i = 0; i < n; i += 1)
7560 ada_evaluate_subexp (NULL, exp, pos, noside);
7564 container = ada_coerce_ref (container);
7565 if (ada_is_direct_array_type (value_type (container)))
7566 container = ada_coerce_to_simple_array (container);
7567 lhs = ada_coerce_ref (lhs);
7568 if (!deprecated_value_modifiable (lhs))
7569 error (_("Left operand of assignment is not a modifiable lvalue."));
7571 lhs_type = value_type (lhs);
7572 if (ada_is_direct_array_type (lhs_type))
7574 lhs = ada_coerce_to_simple_array (lhs);
7575 lhs_type = value_type (lhs);
7576 low_index = TYPE_ARRAY_LOWER_BOUND_VALUE (lhs_type);
7577 high_index = TYPE_ARRAY_UPPER_BOUND_VALUE (lhs_type);
7578 is_array_aggregate = 1;
7580 else if (TYPE_CODE (lhs_type) == TYPE_CODE_STRUCT)
7583 high_index = num_visible_fields (lhs_type) - 1;
7584 is_array_aggregate = 0;
7587 error (_("Left-hand side must be array or record."));
7589 num_specs = num_component_specs (exp, *pos - 3);
7590 max_indices = 4 * num_specs + 4;
7591 indices = alloca (max_indices * sizeof (indices[0]));
7592 indices[0] = indices[1] = low_index - 1;
7593 indices[2] = indices[3] = high_index + 1;
7596 for (i = 0; i < n; i += 1)
7598 switch (exp->elts[*pos].opcode)
7601 aggregate_assign_from_choices (container, lhs, exp, pos, indices,
7602 &num_indices, max_indices,
7603 low_index, high_index);
7606 aggregate_assign_positional (container, lhs, exp, pos, indices,
7607 &num_indices, max_indices,
7608 low_index, high_index);
7612 error (_("Misplaced 'others' clause"));
7613 aggregate_assign_others (container, lhs, exp, pos, indices,
7614 num_indices, low_index, high_index);
7617 error (_("Internal error: bad aggregate clause"));
7624 /* Assign into the component of LHS indexed by the OP_POSITIONAL
7625 construct at *POS, updating *POS past the construct, given that
7626 the positions are relative to lower bound LOW, where HIGH is the
7627 upper bound. Record the position in INDICES[0 .. MAX_INDICES-1]
7628 updating *NUM_INDICES as needed. CONTAINER is as for
7629 assign_aggregate. */
7631 aggregate_assign_positional (struct value *container,
7632 struct value *lhs, struct expression *exp,
7633 int *pos, LONGEST *indices, int *num_indices,
7634 int max_indices, LONGEST low, LONGEST high)
7636 LONGEST ind = longest_to_int (exp->elts[*pos + 1].longconst) + low;
7638 if (ind - 1 == high)
7639 warning (_("Extra components in aggregate ignored."));
7642 add_component_interval (ind, ind, indices, num_indices, max_indices);
7644 assign_component (container, lhs, ind, exp, pos);
7647 ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP);
7650 /* Assign into the components of LHS indexed by the OP_CHOICES
7651 construct at *POS, updating *POS past the construct, given that
7652 the allowable indices are LOW..HIGH. Record the indices assigned
7653 to in INDICES[0 .. MAX_INDICES-1], updating *NUM_INDICES as
7654 needed. CONTAINER is as for assign_aggregate. */
7656 aggregate_assign_from_choices (struct value *container,
7657 struct value *lhs, struct expression *exp,
7658 int *pos, LONGEST *indices, int *num_indices,
7659 int max_indices, LONGEST low, LONGEST high)
7662 int n_choices = longest_to_int (exp->elts[*pos+1].longconst);
7663 int choice_pos, expr_pc;
7664 int is_array = ada_is_direct_array_type (value_type (lhs));
7666 choice_pos = *pos += 3;
7668 for (j = 0; j < n_choices; j += 1)
7669 ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP);
7671 ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP);
7673 for (j = 0; j < n_choices; j += 1)
7675 LONGEST lower, upper;
7676 enum exp_opcode op = exp->elts[choice_pos].opcode;
7677 if (op == OP_DISCRETE_RANGE)
7680 lower = value_as_long (ada_evaluate_subexp (NULL, exp, pos,
7682 upper = value_as_long (ada_evaluate_subexp (NULL, exp, pos,
7687 lower = value_as_long (ada_evaluate_subexp (NULL, exp, &choice_pos,
7698 name = &exp->elts[choice_pos + 2].string;
7701 name = SYMBOL_NATURAL_NAME (exp->elts[choice_pos + 2].symbol);
7704 error (_("Invalid record component association."));
7706 ada_evaluate_subexp (NULL, exp, &choice_pos, EVAL_SKIP);
7708 if (! find_struct_field (name, value_type (lhs), 0,
7709 NULL, NULL, NULL, NULL, &ind))
7710 error (_("Unknown component name: %s."), name);
7711 lower = upper = ind;
7714 if (lower <= upper && (lower < low || upper > high))
7715 error (_("Index in component association out of bounds."));
7717 add_component_interval (lower, upper, indices, num_indices,
7719 while (lower <= upper)
7723 assign_component (container, lhs, lower, exp, &pos1);
7729 /* Assign the value of the expression in the OP_OTHERS construct in
7730 EXP at *POS into the components of LHS indexed from LOW .. HIGH that
7731 have not been previously assigned. The index intervals already assigned
7732 are in INDICES[0 .. NUM_INDICES-1]. Updates *POS to after the
7733 OP_OTHERS clause. CONTAINER is as for assign_aggregate*/
7735 aggregate_assign_others (struct value *container,
7736 struct value *lhs, struct expression *exp,
7737 int *pos, LONGEST *indices, int num_indices,
7738 LONGEST low, LONGEST high)
7741 int expr_pc = *pos+1;
7743 for (i = 0; i < num_indices - 2; i += 2)
7746 for (ind = indices[i + 1] + 1; ind < indices[i + 2]; ind += 1)
7750 assign_component (container, lhs, ind, exp, &pos);
7753 ada_evaluate_subexp (NULL, exp, pos, EVAL_SKIP);
7756 /* Add the interval [LOW .. HIGH] to the sorted set of intervals
7757 [ INDICES[0] .. INDICES[1] ],..., [ INDICES[*SIZE-2] .. INDICES[*SIZE-1] ],
7758 modifying *SIZE as needed. It is an error if *SIZE exceeds
7759 MAX_SIZE. The resulting intervals do not overlap. */
7761 add_component_interval (LONGEST low, LONGEST high,
7762 LONGEST* indices, int *size, int max_size)
7765 for (i = 0; i < *size; i += 2) {
7766 if (high >= indices[i] && low <= indices[i + 1])
7769 for (kh = i + 2; kh < *size; kh += 2)
7770 if (high < indices[kh])
7772 if (low < indices[i])
7774 indices[i + 1] = indices[kh - 1];
7775 if (high > indices[i + 1])
7776 indices[i + 1] = high;
7777 memcpy (indices + i + 2, indices + kh, *size - kh);
7778 *size -= kh - i - 2;
7781 else if (high < indices[i])
7785 if (*size == max_size)
7786 error (_("Internal error: miscounted aggregate components."));
7788 for (j = *size-1; j >= i+2; j -= 1)
7789 indices[j] = indices[j - 2];
7791 indices[i + 1] = high;
7794 static struct value *
7795 ada_evaluate_subexp (struct type *expect_type, struct expression *exp,
7796 int *pos, enum noside noside)
7799 int tem, tem2, tem3;
7801 struct value *arg1 = NULL, *arg2 = NULL, *arg3;
7804 struct value **argvec;
7808 op = exp->elts[pc].opcode;
7815 unwrap_value (evaluate_subexp_standard
7816 (expect_type, exp, pos, noside));
7820 struct value *result;
7822 result = evaluate_subexp_standard (expect_type, exp, pos, noside);
7823 /* The result type will have code OP_STRING, bashed there from
7824 OP_ARRAY. Bash it back. */
7825 if (TYPE_CODE (value_type (result)) == TYPE_CODE_STRING)
7826 TYPE_CODE (value_type (result)) = TYPE_CODE_ARRAY;
7832 type = exp->elts[pc + 1].type;
7833 arg1 = evaluate_subexp (type, exp, pos, noside);
7834 if (noside == EVAL_SKIP)
7836 if (type != ada_check_typedef (value_type (arg1)))
7838 if (ada_is_fixed_point_type (type))
7839 arg1 = cast_to_fixed (type, arg1);
7840 else if (ada_is_fixed_point_type (value_type (arg1)))
7841 arg1 = value_cast (type, cast_from_fixed_to_double (arg1));
7842 else if (VALUE_LVAL (arg1) == lval_memory)
7844 /* This is in case of the really obscure (and undocumented,
7845 but apparently expected) case of (Foo) Bar.all, where Bar
7846 is an integer constant and Foo is a dynamic-sized type.
7847 If we don't do this, ARG1 will simply be relabeled with
7849 if (noside == EVAL_AVOID_SIDE_EFFECTS)
7850 return value_zero (to_static_fixed_type (type), not_lval);
7852 ada_to_fixed_value_create
7853 (type, VALUE_ADDRESS (arg1) + value_offset (arg1), 0);
7856 arg1 = value_cast (type, arg1);
7862 type = exp->elts[pc + 1].type;
7863 return ada_evaluate_subexp (type, exp, pos, noside);
7866 arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
7867 if (exp->elts[*pos].opcode == OP_AGGREGATE)
7869 arg1 = assign_aggregate (arg1, arg1, exp, pos, noside);
7870 if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS)
7872 return ada_value_assign (arg1, arg1);
7874 arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside);
7875 if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS)
7877 if (ada_is_fixed_point_type (value_type (arg1)))
7878 arg2 = cast_to_fixed (value_type (arg1), arg2);
7879 else if (ada_is_fixed_point_type (value_type (arg2)))
7881 (_("Fixed-point values must be assigned to fixed-point variables"));
7883 arg2 = coerce_for_assign (value_type (arg1), arg2);
7884 return ada_value_assign (arg1, arg2);
7887 arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
7888 arg2 = evaluate_subexp_with_coercion (exp, pos, noside);
7889 if (noside == EVAL_SKIP)
7891 if ((ada_is_fixed_point_type (value_type (arg1))
7892 || ada_is_fixed_point_type (value_type (arg2)))
7893 && value_type (arg1) != value_type (arg2))
7894 error (_("Operands of fixed-point addition must have the same type"));
7895 return value_cast (value_type (arg1), value_add (arg1, arg2));
7898 arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
7899 arg2 = evaluate_subexp_with_coercion (exp, pos, noside);
7900 if (noside == EVAL_SKIP)
7902 if ((ada_is_fixed_point_type (value_type (arg1))
7903 || ada_is_fixed_point_type (value_type (arg2)))
7904 && value_type (arg1) != value_type (arg2))
7905 error (_("Operands of fixed-point subtraction must have the same type"));
7906 return value_cast (value_type (arg1), value_sub (arg1, arg2));
7910 arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
7911 arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
7912 if (noside == EVAL_SKIP)
7914 else if (noside == EVAL_AVOID_SIDE_EFFECTS
7915 && (op == BINOP_DIV || op == BINOP_REM || op == BINOP_MOD))
7916 return value_zero (value_type (arg1), not_lval);
7919 if (ada_is_fixed_point_type (value_type (arg1)))
7920 arg1 = cast_from_fixed_to_double (arg1);
7921 if (ada_is_fixed_point_type (value_type (arg2)))
7922 arg2 = cast_from_fixed_to_double (arg2);
7923 return ada_value_binop (arg1, arg2, op);
7928 arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
7929 arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
7930 if (noside == EVAL_SKIP)
7932 else if (noside == EVAL_AVOID_SIDE_EFFECTS
7933 && (op == BINOP_DIV || op == BINOP_REM || op == BINOP_MOD))
7934 return value_zero (value_type (arg1), not_lval);
7936 return ada_value_binop (arg1, arg2, op);
7939 case BINOP_NOTEQUAL:
7940 arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
7941 arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside);
7942 if (noside == EVAL_SKIP)
7944 if (noside == EVAL_AVOID_SIDE_EFFECTS)
7947 tem = ada_value_equal (arg1, arg2);
7948 if (op == BINOP_NOTEQUAL)
7950 return value_from_longest (LA_BOOL_TYPE, (LONGEST) tem);
7953 arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
7954 if (noside == EVAL_SKIP)
7956 else if (ada_is_fixed_point_type (value_type (arg1)))
7957 return value_cast (value_type (arg1), value_neg (arg1));
7959 return value_neg (arg1);
7963 if (noside == EVAL_SKIP)
7968 else if (SYMBOL_DOMAIN (exp->elts[pc + 2].symbol) == UNDEF_DOMAIN)
7969 /* Only encountered when an unresolved symbol occurs in a
7970 context other than a function call, in which case, it is
7972 error (_("Unexpected unresolved symbol, %s, during evaluation"),
7973 SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol));
7974 else if (noside == EVAL_AVOID_SIDE_EFFECTS)
7978 (to_static_fixed_type
7979 (static_unwrap_type (SYMBOL_TYPE (exp->elts[pc + 2].symbol))),
7985 unwrap_value (evaluate_subexp_standard
7986 (expect_type, exp, pos, noside));
7987 return ada_to_fixed_value (arg1);
7993 /* Allocate arg vector, including space for the function to be
7994 called in argvec[0] and a terminating NULL. */
7995 nargs = longest_to_int (exp->elts[pc + 1].longconst);
7997 (struct value **) alloca (sizeof (struct value *) * (nargs + 2));
7999 if (exp->elts[*pos].opcode == OP_VAR_VALUE
8000 && SYMBOL_DOMAIN (exp->elts[pc + 5].symbol) == UNDEF_DOMAIN)
8001 error (_("Unexpected unresolved symbol, %s, during evaluation"),
8002 SYMBOL_PRINT_NAME (exp->elts[pc + 5].symbol));
8005 for (tem = 0; tem <= nargs; tem += 1)
8006 argvec[tem] = evaluate_subexp (NULL_TYPE, exp, pos, noside);
8009 if (noside == EVAL_SKIP)
8013 if (ada_is_packed_array_type (desc_base_type (value_type (argvec[0]))))
8014 argvec[0] = ada_coerce_to_simple_array (argvec[0]);
8015 else if (TYPE_CODE (value_type (argvec[0])) == TYPE_CODE_REF
8016 || (TYPE_CODE (value_type (argvec[0])) == TYPE_CODE_ARRAY
8017 && VALUE_LVAL (argvec[0]) == lval_memory))
8018 argvec[0] = value_addr (argvec[0]);
8020 type = ada_check_typedef (value_type (argvec[0]));
8021 if (TYPE_CODE (type) == TYPE_CODE_PTR)
8023 switch (TYPE_CODE (ada_check_typedef (TYPE_TARGET_TYPE (type))))
8025 case TYPE_CODE_FUNC:
8026 type = ada_check_typedef (TYPE_TARGET_TYPE (type));
8028 case TYPE_CODE_ARRAY:
8030 case TYPE_CODE_STRUCT:
8031 if (noside != EVAL_AVOID_SIDE_EFFECTS)
8032 argvec[0] = ada_value_ind (argvec[0]);
8033 type = ada_check_typedef (TYPE_TARGET_TYPE (type));
8036 error (_("cannot subscript or call something of type `%s'"),
8037 ada_type_name (value_type (argvec[0])));
8042 switch (TYPE_CODE (type))
8044 case TYPE_CODE_FUNC:
8045 if (noside == EVAL_AVOID_SIDE_EFFECTS)
8046 return allocate_value (TYPE_TARGET_TYPE (type));
8047 return call_function_by_hand (argvec[0], nargs, argvec + 1);
8048 case TYPE_CODE_STRUCT:
8052 arity = ada_array_arity (type);
8053 type = ada_array_element_type (type, nargs);
8055 error (_("cannot subscript or call a record"));
8057 error (_("wrong number of subscripts; expecting %d"), arity);
8058 if (noside == EVAL_AVOID_SIDE_EFFECTS)
8059 return allocate_value (ada_aligned_type (type));
8061 unwrap_value (ada_value_subscript
8062 (argvec[0], nargs, argvec + 1));
8064 case TYPE_CODE_ARRAY:
8065 if (noside == EVAL_AVOID_SIDE_EFFECTS)
8067 type = ada_array_element_type (type, nargs);
8069 error (_("element type of array unknown"));
8071 return allocate_value (ada_aligned_type (type));
8074 unwrap_value (ada_value_subscript
8075 (ada_coerce_to_simple_array (argvec[0]),
8076 nargs, argvec + 1));
8077 case TYPE_CODE_PTR: /* Pointer to array */
8078 type = to_fixed_array_type (TYPE_TARGET_TYPE (type), NULL, 1);
8079 if (noside == EVAL_AVOID_SIDE_EFFECTS)
8081 type = ada_array_element_type (type, nargs);
8083 error (_("element type of array unknown"));
8085 return allocate_value (ada_aligned_type (type));
8088 unwrap_value (ada_value_ptr_subscript (argvec[0], type,
8089 nargs, argvec + 1));
8092 error (_("Attempt to index or call something other than an "
8093 "array or function"));
8098 struct value *array = evaluate_subexp (NULL_TYPE, exp, pos, noside);
8099 struct value *low_bound_val =
8100 evaluate_subexp (NULL_TYPE, exp, pos, noside);
8101 struct value *high_bound_val =
8102 evaluate_subexp (NULL_TYPE, exp, pos, noside);
8105 low_bound_val = coerce_ref (low_bound_val);
8106 high_bound_val = coerce_ref (high_bound_val);
8107 low_bound = pos_atr (low_bound_val);
8108 high_bound = pos_atr (high_bound_val);
8110 if (noside == EVAL_SKIP)
8113 /* If this is a reference to an aligner type, then remove all
8115 if (TYPE_CODE (value_type (array)) == TYPE_CODE_REF
8116 && ada_is_aligner_type (TYPE_TARGET_TYPE (value_type (array))))
8117 TYPE_TARGET_TYPE (value_type (array)) =
8118 ada_aligned_type (TYPE_TARGET_TYPE (value_type (array)));
8120 if (ada_is_packed_array_type (value_type (array)))
8121 error (_("cannot slice a packed array"));
8123 /* If this is a reference to an array or an array lvalue,
8124 convert to a pointer. */
8125 if (TYPE_CODE (value_type (array)) == TYPE_CODE_REF
8126 || (TYPE_CODE (value_type (array)) == TYPE_CODE_ARRAY
8127 && VALUE_LVAL (array) == lval_memory))
8128 array = value_addr (array);
8130 if (noside == EVAL_AVOID_SIDE_EFFECTS
8131 && ada_is_array_descriptor_type (ada_check_typedef
8132 (value_type (array))))
8133 return empty_array (ada_type_of_array (array, 0), low_bound);
8135 array = ada_coerce_to_simple_array_ptr (array);
8137 /* If we have more than one level of pointer indirection,
8138 dereference the value until we get only one level. */
8139 while (TYPE_CODE (value_type (array)) == TYPE_CODE_PTR
8140 && (TYPE_CODE (TYPE_TARGET_TYPE (value_type (array)))
8142 array = value_ind (array);
8144 /* Make sure we really do have an array type before going further,
8145 to avoid a SEGV when trying to get the index type or the target
8146 type later down the road if the debug info generated by
8147 the compiler is incorrect or incomplete. */
8148 if (!ada_is_simple_array_type (value_type (array)))
8149 error (_("cannot take slice of non-array"));
8151 if (TYPE_CODE (value_type (array)) == TYPE_CODE_PTR)
8153 if (high_bound < low_bound || noside == EVAL_AVOID_SIDE_EFFECTS)
8154 return empty_array (TYPE_TARGET_TYPE (value_type (array)),
8158 struct type *arr_type0 =
8159 to_fixed_array_type (TYPE_TARGET_TYPE (value_type (array)),
8161 return ada_value_slice_ptr (array, arr_type0,
8162 longest_to_int (low_bound),
8163 longest_to_int (high_bound));
8166 else if (noside == EVAL_AVOID_SIDE_EFFECTS)
8168 else if (high_bound < low_bound)
8169 return empty_array (value_type (array), low_bound);
8171 return ada_value_slice (array, longest_to_int (low_bound),
8172 longest_to_int (high_bound));
8177 arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
8178 type = exp->elts[pc + 1].type;
8180 if (noside == EVAL_SKIP)
8183 switch (TYPE_CODE (type))
8186 lim_warning (_("Membership test incompletely implemented; "
8187 "always returns true"));
8188 return value_from_longest (builtin_type_int, (LONGEST) 1);
8190 case TYPE_CODE_RANGE:
8191 arg2 = value_from_longest (builtin_type_int, TYPE_LOW_BOUND (type));
8192 arg3 = value_from_longest (builtin_type_int,
8193 TYPE_HIGH_BOUND (type));
8195 value_from_longest (builtin_type_int,
8196 (value_less (arg1, arg3)
8197 || value_equal (arg1, arg3))
8198 && (value_less (arg2, arg1)
8199 || value_equal (arg2, arg1)));
8202 case BINOP_IN_BOUNDS:
8204 arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
8205 arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
8207 if (noside == EVAL_SKIP)
8210 if (noside == EVAL_AVOID_SIDE_EFFECTS)
8211 return value_zero (builtin_type_int, not_lval);
8213 tem = longest_to_int (exp->elts[pc + 1].longconst);
8215 if (tem < 1 || tem > ada_array_arity (value_type (arg2)))
8216 error (_("invalid dimension number to 'range"));
8218 arg3 = ada_array_bound (arg2, tem, 1);
8219 arg2 = ada_array_bound (arg2, tem, 0);
8222 value_from_longest (builtin_type_int,
8223 (value_less (arg1, arg3)
8224 || value_equal (arg1, arg3))
8225 && (value_less (arg2, arg1)
8226 || value_equal (arg2, arg1)));
8228 case TERNOP_IN_RANGE:
8229 arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
8230 arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
8231 arg3 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
8233 if (noside == EVAL_SKIP)
8237 value_from_longest (builtin_type_int,
8238 (value_less (arg1, arg3)
8239 || value_equal (arg1, arg3))
8240 && (value_less (arg2, arg1)
8241 || value_equal (arg2, arg1)));
8247 struct type *type_arg;
8248 if (exp->elts[*pos].opcode == OP_TYPE)
8250 evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP);
8252 type_arg = exp->elts[pc + 2].type;
8256 arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
8260 if (exp->elts[*pos].opcode != OP_LONG)
8261 error (_("Invalid operand to '%s"), ada_attribute_name (op));
8262 tem = longest_to_int (exp->elts[*pos + 2].longconst);
8265 if (noside == EVAL_SKIP)
8268 if (type_arg == NULL)
8270 arg1 = ada_coerce_ref (arg1);
8272 if (ada_is_packed_array_type (value_type (arg1)))
8273 arg1 = ada_coerce_to_simple_array (arg1);
8275 if (tem < 1 || tem > ada_array_arity (value_type (arg1)))
8276 error (_("invalid dimension number to '%s"),
8277 ada_attribute_name (op));
8279 if (noside == EVAL_AVOID_SIDE_EFFECTS)
8281 type = ada_index_type (value_type (arg1), tem);
8284 (_("attempt to take bound of something that is not an array"));
8285 return allocate_value (type);
8290 default: /* Should never happen. */
8291 error (_("unexpected attribute encountered"));
8293 return ada_array_bound (arg1, tem, 0);
8295 return ada_array_bound (arg1, tem, 1);
8297 return ada_array_length (arg1, tem);
8300 else if (discrete_type_p (type_arg))
8302 struct type *range_type;
8303 char *name = ada_type_name (type_arg);
8305 if (name != NULL && TYPE_CODE (type_arg) != TYPE_CODE_ENUM)
8307 to_fixed_range_type (name, NULL, TYPE_OBJFILE (type_arg));
8308 if (range_type == NULL)
8309 range_type = type_arg;
8313 error (_("unexpected attribute encountered"));
8315 return discrete_type_low_bound (range_type);
8317 return discrete_type_high_bound (range_type);
8319 error (_("the 'length attribute applies only to array types"));
8322 else if (TYPE_CODE (type_arg) == TYPE_CODE_FLT)
8323 error (_("unimplemented type attribute"));
8328 if (ada_is_packed_array_type (type_arg))
8329 type_arg = decode_packed_array_type (type_arg);
8331 if (tem < 1 || tem > ada_array_arity (type_arg))
8332 error (_("invalid dimension number to '%s"),
8333 ada_attribute_name (op));
8335 type = ada_index_type (type_arg, tem);
8338 (_("attempt to take bound of something that is not an array"));
8339 if (noside == EVAL_AVOID_SIDE_EFFECTS)
8340 return allocate_value (type);
8345 error (_("unexpected attribute encountered"));
8347 low = ada_array_bound_from_type (type_arg, tem, 0, &type);
8348 return value_from_longest (type, low);
8350 high = ada_array_bound_from_type (type_arg, tem, 1, &type);
8351 return value_from_longest (type, high);
8353 low = ada_array_bound_from_type (type_arg, tem, 0, &type);
8354 high = ada_array_bound_from_type (type_arg, tem, 1, NULL);
8355 return value_from_longest (type, high - low + 1);
8361 arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
8362 if (noside == EVAL_SKIP)
8365 if (noside == EVAL_AVOID_SIDE_EFFECTS)
8366 return value_zero (ada_tag_type (arg1), not_lval);
8368 return ada_value_tag (arg1);
8372 evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP);
8373 arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
8374 arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
8375 if (noside == EVAL_SKIP)
8377 else if (noside == EVAL_AVOID_SIDE_EFFECTS)
8378 return value_zero (value_type (arg1), not_lval);
8380 return value_binop (arg1, arg2,
8381 op == OP_ATR_MIN ? BINOP_MIN : BINOP_MAX);
8383 case OP_ATR_MODULUS:
8385 struct type *type_arg = exp->elts[pc + 2].type;
8386 evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP);
8388 if (noside == EVAL_SKIP)
8391 if (!ada_is_modular_type (type_arg))
8392 error (_("'modulus must be applied to modular type"));
8394 return value_from_longest (TYPE_TARGET_TYPE (type_arg),
8395 ada_modulus (type_arg));
8400 evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP);
8401 arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
8402 if (noside == EVAL_SKIP)
8404 else if (noside == EVAL_AVOID_SIDE_EFFECTS)
8405 return value_zero (builtin_type_int, not_lval);
8407 return value_pos_atr (arg1);
8410 arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
8411 if (noside == EVAL_SKIP)
8413 else if (noside == EVAL_AVOID_SIDE_EFFECTS)
8414 return value_zero (builtin_type_int, not_lval);
8416 return value_from_longest (builtin_type_int,
8418 * TYPE_LENGTH (value_type (arg1)));
8421 evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP);
8422 arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
8423 type = exp->elts[pc + 2].type;
8424 if (noside == EVAL_SKIP)
8426 else if (noside == EVAL_AVOID_SIDE_EFFECTS)
8427 return value_zero (type, not_lval);
8429 return value_val_atr (type, arg1);
8432 arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
8433 arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
8434 if (noside == EVAL_SKIP)
8436 else if (noside == EVAL_AVOID_SIDE_EFFECTS)
8437 return value_zero (value_type (arg1), not_lval);
8439 return value_binop (arg1, arg2, op);
8442 arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
8443 if (noside == EVAL_SKIP)
8449 arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
8450 if (noside == EVAL_SKIP)
8452 if (value_less (arg1, value_zero (value_type (arg1), not_lval)))
8453 return value_neg (arg1);
8458 if (expect_type && TYPE_CODE (expect_type) == TYPE_CODE_PTR)
8459 expect_type = TYPE_TARGET_TYPE (ada_check_typedef (expect_type));
8460 arg1 = evaluate_subexp (expect_type, exp, pos, noside);
8461 if (noside == EVAL_SKIP)
8463 type = ada_check_typedef (value_type (arg1));
8464 if (noside == EVAL_AVOID_SIDE_EFFECTS)
8466 if (ada_is_array_descriptor_type (type))
8467 /* GDB allows dereferencing GNAT array descriptors. */
8469 struct type *arrType = ada_type_of_array (arg1, 0);
8470 if (arrType == NULL)
8471 error (_("Attempt to dereference null array pointer."));
8472 return value_at_lazy (arrType, 0);
8474 else if (TYPE_CODE (type) == TYPE_CODE_PTR
8475 || TYPE_CODE (type) == TYPE_CODE_REF
8476 /* In C you can dereference an array to get the 1st elt. */
8477 || TYPE_CODE (type) == TYPE_CODE_ARRAY)
8479 type = to_static_fixed_type
8481 (ada_check_typedef (TYPE_TARGET_TYPE (type))));
8483 return value_zero (type, lval_memory);
8485 else if (TYPE_CODE (type) == TYPE_CODE_INT)
8486 /* GDB allows dereferencing an int. */
8487 return value_zero (builtin_type_int, lval_memory);
8489 error (_("Attempt to take contents of a non-pointer value."));
8491 arg1 = ada_coerce_ref (arg1); /* FIXME: What is this for?? */
8492 type = ada_check_typedef (value_type (arg1));
8494 if (ada_is_array_descriptor_type (type))
8495 /* GDB allows dereferencing GNAT array descriptors. */
8496 return ada_coerce_to_simple_array (arg1);
8498 return ada_value_ind (arg1);
8500 case STRUCTOP_STRUCT:
8501 tem = longest_to_int (exp->elts[pc + 1].longconst);
8502 (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1);
8503 arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
8504 if (noside == EVAL_SKIP)
8506 if (noside == EVAL_AVOID_SIDE_EFFECTS)
8508 struct type *type1 = value_type (arg1);
8509 if (ada_is_tagged_type (type1, 1))
8511 type = ada_lookup_struct_elt_type (type1,
8512 &exp->elts[pc + 2].string,
8515 /* In this case, we assume that the field COULD exist
8516 in some extension of the type. Return an object of
8517 "type" void, which will match any formal
8518 (see ada_type_match). */
8519 return value_zero (builtin_type_void, lval_memory);
8523 ada_lookup_struct_elt_type (type1, &exp->elts[pc + 2].string, 1,
8526 return value_zero (ada_aligned_type (type), lval_memory);
8530 ada_to_fixed_value (unwrap_value
8531 (ada_value_struct_elt
8532 (arg1, &exp->elts[pc + 2].string, 0)));
8534 /* The value is not supposed to be used. This is here to make it
8535 easier to accommodate expressions that contain types. */
8537 if (noside == EVAL_SKIP)
8539 else if (noside == EVAL_AVOID_SIDE_EFFECTS)
8540 return allocate_value (exp->elts[pc + 1].type);
8542 error (_("Attempt to use a type name as an expression"));
8547 case OP_DISCRETE_RANGE:
8550 if (noside == EVAL_NORMAL)
8554 error (_("Undefined name, ambiguous name, or renaming used in "
8555 "component association: %s."), &exp->elts[pc+2].string);
8557 error (_("Aggregates only allowed on the right of an assignment"));
8559 internal_error (__FILE__, __LINE__, _("aggregate apparently mangled"));
8562 ada_forward_operator_length (exp, pc, &oplen, &nargs);
8564 for (tem = 0; tem < nargs; tem += 1)
8565 ada_evaluate_subexp (NULL, exp, pos, noside);
8570 return value_from_longest (builtin_type_long, (LONGEST) 1);
8576 /* If TYPE encodes an Ada fixed-point type, return the suffix of the
8577 type name that encodes the 'small and 'delta information.
8578 Otherwise, return NULL. */
8581 fixed_type_info (struct type *type)
8583 const char *name = ada_type_name (type);
8584 enum type_code code = (type == NULL) ? TYPE_CODE_UNDEF : TYPE_CODE (type);
8586 if ((code == TYPE_CODE_INT || code == TYPE_CODE_RANGE) && name != NULL)
8588 const char *tail = strstr (name, "___XF_");
8594 else if (code == TYPE_CODE_RANGE && TYPE_TARGET_TYPE (type) != type)
8595 return fixed_type_info (TYPE_TARGET_TYPE (type));
8600 /* Returns non-zero iff TYPE represents an Ada fixed-point type. */
8603 ada_is_fixed_point_type (struct type *type)
8605 return fixed_type_info (type) != NULL;
8608 /* Return non-zero iff TYPE represents a System.Address type. */
8611 ada_is_system_address_type (struct type *type)
8613 return (TYPE_NAME (type)
8614 && strcmp (TYPE_NAME (type), "system__address") == 0);
8617 /* Assuming that TYPE is the representation of an Ada fixed-point
8618 type, return its delta, or -1 if the type is malformed and the
8619 delta cannot be determined. */
8622 ada_delta (struct type *type)
8624 const char *encoding = fixed_type_info (type);
8627 if (sscanf (encoding, "_%ld_%ld", &num, &den) < 2)
8630 return (DOUBLEST) num / (DOUBLEST) den;
8633 /* Assuming that ada_is_fixed_point_type (TYPE), return the scaling
8634 factor ('SMALL value) associated with the type. */
8637 scaling_factor (struct type *type)
8639 const char *encoding = fixed_type_info (type);
8640 unsigned long num0, den0, num1, den1;
8643 n = sscanf (encoding, "_%lu_%lu_%lu_%lu", &num0, &den0, &num1, &den1);
8648 return (DOUBLEST) num1 / (DOUBLEST) den1;
8650 return (DOUBLEST) num0 / (DOUBLEST) den0;
8654 /* Assuming that X is the representation of a value of fixed-point
8655 type TYPE, return its floating-point equivalent. */
8658 ada_fixed_to_float (struct type *type, LONGEST x)
8660 return (DOUBLEST) x *scaling_factor (type);
8663 /* The representation of a fixed-point value of type TYPE
8664 corresponding to the value X. */
8667 ada_float_to_fixed (struct type *type, DOUBLEST x)
8669 return (LONGEST) (x / scaling_factor (type) + 0.5);
8673 /* VAX floating formats */
8675 /* Non-zero iff TYPE represents one of the special VAX floating-point
8679 ada_is_vax_floating_type (struct type *type)
8682 (ada_type_name (type) == NULL) ? 0 : strlen (ada_type_name (type));
8685 && (TYPE_CODE (type) == TYPE_CODE_INT
8686 || TYPE_CODE (type) == TYPE_CODE_RANGE)
8687 && strncmp (ada_type_name (type) + name_len - 6, "___XF", 5) == 0;
8690 /* The type of special VAX floating-point type this is, assuming
8691 ada_is_vax_floating_point. */
8694 ada_vax_float_type_suffix (struct type *type)
8696 return ada_type_name (type)[strlen (ada_type_name (type)) - 1];
8699 /* A value representing the special debugging function that outputs
8700 VAX floating-point values of the type represented by TYPE. Assumes
8701 ada_is_vax_floating_type (TYPE). */
8704 ada_vax_float_print_function (struct type *type)
8706 switch (ada_vax_float_type_suffix (type))
8709 return get_var_value ("DEBUG_STRING_F", 0);
8711 return get_var_value ("DEBUG_STRING_D", 0);
8713 return get_var_value ("DEBUG_STRING_G", 0);
8715 error (_("invalid VAX floating-point type"));
8722 /* Scan STR beginning at position K for a discriminant name, and
8723 return the value of that discriminant field of DVAL in *PX. If
8724 PNEW_K is not null, put the position of the character beyond the
8725 name scanned in *PNEW_K. Return 1 if successful; return 0 and do
8726 not alter *PX and *PNEW_K if unsuccessful. */
8729 scan_discrim_bound (char *str, int k, struct value *dval, LONGEST * px,
8732 static char *bound_buffer = NULL;
8733 static size_t bound_buffer_len = 0;
8736 struct value *bound_val;
8738 if (dval == NULL || str == NULL || str[k] == '\0')
8741 pend = strstr (str + k, "__");
8745 k += strlen (bound);
8749 GROW_VECT (bound_buffer, bound_buffer_len, pend - (str + k) + 1);
8750 bound = bound_buffer;
8751 strncpy (bound_buffer, str + k, pend - (str + k));
8752 bound[pend - (str + k)] = '\0';
8756 bound_val = ada_search_struct_field (bound, dval, 0, value_type (dval));
8757 if (bound_val == NULL)
8760 *px = value_as_long (bound_val);
8766 /* Value of variable named NAME in the current environment. If
8767 no such variable found, then if ERR_MSG is null, returns 0, and
8768 otherwise causes an error with message ERR_MSG. */
8770 static struct value *
8771 get_var_value (char *name, char *err_msg)
8773 struct ada_symbol_info *syms;
8776 nsyms = ada_lookup_symbol_list (name, get_selected_block (0), VAR_DOMAIN,
8781 if (err_msg == NULL)
8784 error (("%s"), err_msg);
8787 return value_of_variable (syms[0].sym, syms[0].block);
8790 /* Value of integer variable named NAME in the current environment. If
8791 no such variable found, returns 0, and sets *FLAG to 0. If
8792 successful, sets *FLAG to 1. */
8795 get_int_var_value (char *name, int *flag)
8797 struct value *var_val = get_var_value (name, 0);
8809 return value_as_long (var_val);
8814 /* Return a range type whose base type is that of the range type named
8815 NAME in the current environment, and whose bounds are calculated
8816 from NAME according to the GNAT range encoding conventions.
8817 Extract discriminant values, if needed, from DVAL. If a new type
8818 must be created, allocate in OBJFILE's space. The bounds
8819 information, in general, is encoded in NAME, the base type given in
8820 the named range type. */
8822 static struct type *
8823 to_fixed_range_type (char *name, struct value *dval, struct objfile *objfile)
8825 struct type *raw_type = ada_find_any_type (name);
8826 struct type *base_type;
8829 if (raw_type == NULL)
8830 base_type = builtin_type_int;
8831 else if (TYPE_CODE (raw_type) == TYPE_CODE_RANGE)
8832 base_type = TYPE_TARGET_TYPE (raw_type);
8834 base_type = raw_type;
8836 subtype_info = strstr (name, "___XD");
8837 if (subtype_info == NULL)
8841 static char *name_buf = NULL;
8842 static size_t name_len = 0;
8843 int prefix_len = subtype_info - name;
8849 GROW_VECT (name_buf, name_len, prefix_len + 5);
8850 strncpy (name_buf, name, prefix_len);
8851 name_buf[prefix_len] = '\0';
8854 bounds_str = strchr (subtype_info, '_');
8857 if (*subtype_info == 'L')
8859 if (!ada_scan_number (bounds_str, n, &L, &n)
8860 && !scan_discrim_bound (bounds_str, n, dval, &L, &n))
8862 if (bounds_str[n] == '_')
8864 else if (bounds_str[n] == '.') /* FIXME? SGI Workshop kludge. */
8871 strcpy (name_buf + prefix_len, "___L");
8872 L = get_int_var_value (name_buf, &ok);
8875 lim_warning (_("Unknown lower bound, using 1."));
8880 if (*subtype_info == 'U')
8882 if (!ada_scan_number (bounds_str, n, &U, &n)
8883 && !scan_discrim_bound (bounds_str, n, dval, &U, &n))
8889 strcpy (name_buf + prefix_len, "___U");
8890 U = get_int_var_value (name_buf, &ok);
8893 lim_warning (_("Unknown upper bound, using %ld."), (long) L);
8898 if (objfile == NULL)
8899 objfile = TYPE_OBJFILE (base_type);
8900 type = create_range_type (alloc_type (objfile), base_type, L, U);
8901 TYPE_NAME (type) = name;
8906 /* True iff NAME is the name of a range type. */
8909 ada_is_range_type_name (const char *name)
8911 return (name != NULL && strstr (name, "___XD"));
8917 /* True iff TYPE is an Ada modular type. */
8920 ada_is_modular_type (struct type *type)
8922 struct type *subranged_type = base_type (type);
8924 return (subranged_type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE
8925 && TYPE_CODE (subranged_type) != TYPE_CODE_ENUM
8926 && TYPE_UNSIGNED (subranged_type));
8929 /* Assuming ada_is_modular_type (TYPE), the modulus of TYPE. */
8932 ada_modulus (struct type * type)
8934 return (ULONGEST) TYPE_HIGH_BOUND (type) + 1;
8938 /* Ada exception catchpoint support:
8939 ---------------------------------
8941 We support 3 kinds of exception catchpoints:
8942 . catchpoints on Ada exceptions
8943 . catchpoints on unhandled Ada exceptions
8944 . catchpoints on failed assertions
8946 Exceptions raised during failed assertions, or unhandled exceptions
8947 could perfectly be caught with the general catchpoint on Ada exceptions.
8948 However, we can easily differentiate these two special cases, and having
8949 the option to distinguish these two cases from the rest can be useful
8950 to zero-in on certain situations.
8952 Exception catchpoints are a specialized form of breakpoint,
8953 since they rely on inserting breakpoints inside known routines
8954 of the GNAT runtime. The implementation therefore uses a standard
8955 breakpoint structure of the BP_BREAKPOINT type, but with its own set
8958 Support in the runtime for exception catchpoints have been changed
8959 a few times already, and these changes affect the implementation
8960 of these catchpoints. In order to be able to support several
8961 variants of the runtime, we use a sniffer that will determine
8962 the runtime variant used by the program being debugged.
8964 At this time, we do not support the use of conditions on Ada exception
8965 catchpoints. The COND and COND_STRING fields are therefore set
8966 to NULL (most of the time, see below).
8968 Conditions where EXP_STRING, COND, and COND_STRING are used:
8970 When a user specifies the name of a specific exception in the case
8971 of catchpoints on Ada exceptions, we store the name of that exception
8972 in the EXP_STRING. We then translate this request into an actual
8973 condition stored in COND_STRING, and then parse it into an expression
8976 /* The different types of catchpoints that we introduced for catching
8979 enum exception_catchpoint_kind
8982 ex_catch_exception_unhandled,
8986 typedef CORE_ADDR (ada_unhandled_exception_name_addr_ftype) (void);
8988 /* A structure that describes how to support exception catchpoints
8989 for a given executable. */
8991 struct exception_support_info
8993 /* The name of the symbol to break on in order to insert
8994 a catchpoint on exceptions. */
8995 const char *catch_exception_sym;
8997 /* The name of the symbol to break on in order to insert
8998 a catchpoint on unhandled exceptions. */
8999 const char *catch_exception_unhandled_sym;
9001 /* The name of the symbol to break on in order to insert
9002 a catchpoint on failed assertions. */
9003 const char *catch_assert_sym;
9005 /* Assuming that the inferior just triggered an unhandled exception
9006 catchpoint, this function is responsible for returning the address
9007 in inferior memory where the name of that exception is stored.
9008 Return zero if the address could not be computed. */
9009 ada_unhandled_exception_name_addr_ftype *unhandled_exception_name_addr;
9012 static CORE_ADDR ada_unhandled_exception_name_addr (void);
9013 static CORE_ADDR ada_unhandled_exception_name_addr_from_raise (void);
9015 /* The following exception support info structure describes how to
9016 implement exception catchpoints with the latest version of the
9017 Ada runtime (as of 2007-03-06). */
9019 static const struct exception_support_info default_exception_support_info =
9021 "__gnat_debug_raise_exception", /* catch_exception_sym */
9022 "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */
9023 "__gnat_debug_raise_assert_failure", /* catch_assert_sym */
9024 ada_unhandled_exception_name_addr
9027 /* The following exception support info structure describes how to
9028 implement exception catchpoints with a slightly older version
9029 of the Ada runtime. */
9031 static const struct exception_support_info exception_support_info_fallback =
9033 "__gnat_raise_nodefer_with_msg", /* catch_exception_sym */
9034 "__gnat_unhandled_exception", /* catch_exception_unhandled_sym */
9035 "system__assertions__raise_assert_failure", /* catch_assert_sym */
9036 ada_unhandled_exception_name_addr_from_raise
9039 /* For each executable, we sniff which exception info structure to use
9040 and cache it in the following global variable. */
9042 static const struct exception_support_info *exception_info = NULL;
9044 /* Inspect the Ada runtime and determine which exception info structure
9045 should be used to provide support for exception catchpoints.
9047 This function will always set exception_info, or raise an error. */
9050 ada_exception_support_info_sniffer (void)
9054 /* If the exception info is already known, then no need to recompute it. */
9055 if (exception_info != NULL)
9058 /* Check the latest (default) exception support info. */
9059 sym = standard_lookup (default_exception_support_info.catch_exception_sym,
9063 exception_info = &default_exception_support_info;
9067 /* Try our fallback exception suport info. */
9068 sym = standard_lookup (exception_support_info_fallback.catch_exception_sym,
9072 exception_info = &exception_support_info_fallback;
9076 /* Sometimes, it is normal for us to not be able to find the routine
9077 we are looking for. This happens when the program is linked with
9078 the shared version of the GNAT runtime, and the program has not been
9079 started yet. Inform the user of these two possible causes if
9082 if (ada_update_initial_language (language_unknown, NULL) != language_ada)
9083 error (_("Unable to insert catchpoint. Is this an Ada main program?"));
9085 /* If the symbol does not exist, then check that the program is
9086 already started, to make sure that shared libraries have been
9087 loaded. If it is not started, this may mean that the symbol is
9088 in a shared library. */
9090 if (ptid_get_pid (inferior_ptid) == 0)
9091 error (_("Unable to insert catchpoint. Try to start the program first."));
9093 /* At this point, we know that we are debugging an Ada program and
9094 that the inferior has been started, but we still are not able to
9095 find the run-time symbols. That can mean that we are in
9096 configurable run time mode, or that a-except as been optimized
9097 out by the linker... In any case, at this point it is not worth
9098 supporting this feature. */
9100 error (_("Cannot insert catchpoints in this configuration."));
9103 /* An observer of "executable_changed" events.
9104 Its role is to clear certain cached values that need to be recomputed
9105 each time a new executable is loaded by GDB. */
9108 ada_executable_changed_observer (void *unused)
9110 /* If the executable changed, then it is possible that the Ada runtime
9111 is different. So we need to invalidate the exception support info
9113 exception_info = NULL;
9116 /* Return the name of the function at PC, NULL if could not find it.
9117 This function only checks the debugging information, not the symbol
9121 function_name_from_pc (CORE_ADDR pc)
9125 if (!find_pc_partial_function (pc, &func_name, NULL, NULL))
9131 /* True iff FRAME is very likely to be that of a function that is
9132 part of the runtime system. This is all very heuristic, but is
9133 intended to be used as advice as to what frames are uninteresting
9137 is_known_support_routine (struct frame_info *frame)
9139 struct symtab_and_line sal;
9143 /* If this code does not have any debugging information (no symtab),
9144 This cannot be any user code. */
9146 find_frame_sal (frame, &sal);
9147 if (sal.symtab == NULL)
9150 /* If there is a symtab, but the associated source file cannot be
9151 located, then assume this is not user code: Selecting a frame
9152 for which we cannot display the code would not be very helpful
9153 for the user. This should also take care of case such as VxWorks
9154 where the kernel has some debugging info provided for a few units. */
9156 if (symtab_to_fullname (sal.symtab) == NULL)
9159 /* Check the unit filename againt the Ada runtime file naming.
9160 We also check the name of the objfile against the name of some
9161 known system libraries that sometimes come with debugging info
9164 for (i = 0; known_runtime_file_name_patterns[i] != NULL; i += 1)
9166 re_comp (known_runtime_file_name_patterns[i]);
9167 if (re_exec (sal.symtab->filename))
9169 if (sal.symtab->objfile != NULL
9170 && re_exec (sal.symtab->objfile->name))
9174 /* Check whether the function is a GNAT-generated entity. */
9176 func_name = function_name_from_pc (get_frame_address_in_block (frame));
9177 if (func_name == NULL)
9180 for (i = 0; known_auxiliary_function_name_patterns[i] != NULL; i += 1)
9182 re_comp (known_auxiliary_function_name_patterns[i]);
9183 if (re_exec (func_name))
9190 /* Find the first frame that contains debugging information and that is not
9191 part of the Ada run-time, starting from FI and moving upward. */
9194 ada_find_printable_frame (struct frame_info *fi)
9196 for (; fi != NULL; fi = get_prev_frame (fi))
9198 if (!is_known_support_routine (fi))
9207 /* Assuming that the inferior just triggered an unhandled exception
9208 catchpoint, return the address in inferior memory where the name
9209 of the exception is stored.
9211 Return zero if the address could not be computed. */
9214 ada_unhandled_exception_name_addr (void)
9216 return parse_and_eval_address ("e.full_name");
9219 /* Same as ada_unhandled_exception_name_addr, except that this function
9220 should be used when the inferior uses an older version of the runtime,
9221 where the exception name needs to be extracted from a specific frame
9222 several frames up in the callstack. */
9225 ada_unhandled_exception_name_addr_from_raise (void)
9228 struct frame_info *fi;
9230 /* To determine the name of this exception, we need to select
9231 the frame corresponding to RAISE_SYM_NAME. This frame is
9232 at least 3 levels up, so we simply skip the first 3 frames
9233 without checking the name of their associated function. */
9234 fi = get_current_frame ();
9235 for (frame_level = 0; frame_level < 3; frame_level += 1)
9237 fi = get_prev_frame (fi);
9241 const char *func_name =
9242 function_name_from_pc (get_frame_address_in_block (fi));
9243 if (func_name != NULL
9244 && strcmp (func_name, exception_info->catch_exception_sym) == 0)
9245 break; /* We found the frame we were looking for... */
9246 fi = get_prev_frame (fi);
9253 return parse_and_eval_address ("id.full_name");
9256 /* Assuming the inferior just triggered an Ada exception catchpoint
9257 (of any type), return the address in inferior memory where the name
9258 of the exception is stored, if applicable.
9260 Return zero if the address could not be computed, or if not relevant. */
9263 ada_exception_name_addr_1 (enum exception_catchpoint_kind ex,
9264 struct breakpoint *b)
9268 case ex_catch_exception:
9269 return (parse_and_eval_address ("e.full_name"));
9272 case ex_catch_exception_unhandled:
9273 return exception_info->unhandled_exception_name_addr ();
9276 case ex_catch_assert:
9277 return 0; /* Exception name is not relevant in this case. */
9281 internal_error (__FILE__, __LINE__, _("unexpected catchpoint type"));
9285 return 0; /* Should never be reached. */
9288 /* Same as ada_exception_name_addr_1, except that it intercepts and contains
9289 any error that ada_exception_name_addr_1 might cause to be thrown.
9290 When an error is intercepted, a warning with the error message is printed,
9291 and zero is returned. */
9294 ada_exception_name_addr (enum exception_catchpoint_kind ex,
9295 struct breakpoint *b)
9297 struct gdb_exception e;
9298 CORE_ADDR result = 0;
9300 TRY_CATCH (e, RETURN_MASK_ERROR)
9302 result = ada_exception_name_addr_1 (ex, b);
9307 warning (_("failed to get exception name: %s"), e.message);
9314 /* Implement the PRINT_IT method in the breakpoint_ops structure
9315 for all exception catchpoint kinds. */
9317 static enum print_stop_action
9318 print_it_exception (enum exception_catchpoint_kind ex, struct breakpoint *b)
9320 const CORE_ADDR addr = ada_exception_name_addr (ex, b);
9321 char exception_name[256];
9325 read_memory (addr, exception_name, sizeof (exception_name) - 1);
9326 exception_name [sizeof (exception_name) - 1] = '\0';
9329 ada_find_printable_frame (get_current_frame ());
9331 annotate_catchpoint (b->number);
9334 case ex_catch_exception:
9336 printf_filtered (_("\nCatchpoint %d, %s at "),
9337 b->number, exception_name);
9339 printf_filtered (_("\nCatchpoint %d, exception at "), b->number);
9341 case ex_catch_exception_unhandled:
9343 printf_filtered (_("\nCatchpoint %d, unhandled %s at "),
9344 b->number, exception_name);
9346 printf_filtered (_("\nCatchpoint %d, unhandled exception at "),
9349 case ex_catch_assert:
9350 printf_filtered (_("\nCatchpoint %d, failed assertion at "),
9355 return PRINT_SRC_AND_LOC;
9358 /* Implement the PRINT_ONE method in the breakpoint_ops structure
9359 for all exception catchpoint kinds. */
9362 print_one_exception (enum exception_catchpoint_kind ex,
9363 struct breakpoint *b, CORE_ADDR *last_addr)
9368 ui_out_field_core_addr (uiout, "addr", b->loc->address);
9372 *last_addr = b->loc->address;
9375 case ex_catch_exception:
9376 if (b->exp_string != NULL)
9378 char *msg = xstrprintf (_("`%s' Ada exception"), b->exp_string);
9380 ui_out_field_string (uiout, "what", msg);
9384 ui_out_field_string (uiout, "what", "all Ada exceptions");
9388 case ex_catch_exception_unhandled:
9389 ui_out_field_string (uiout, "what", "unhandled Ada exceptions");
9392 case ex_catch_assert:
9393 ui_out_field_string (uiout, "what", "failed Ada assertions");
9397 internal_error (__FILE__, __LINE__, _("unexpected catchpoint type"));
9402 /* Implement the PRINT_MENTION method in the breakpoint_ops structure
9403 for all exception catchpoint kinds. */
9406 print_mention_exception (enum exception_catchpoint_kind ex,
9407 struct breakpoint *b)
9411 case ex_catch_exception:
9412 if (b->exp_string != NULL)
9413 printf_filtered (_("Catchpoint %d: `%s' Ada exception"),
9414 b->number, b->exp_string);
9416 printf_filtered (_("Catchpoint %d: all Ada exceptions"), b->number);
9420 case ex_catch_exception_unhandled:
9421 printf_filtered (_("Catchpoint %d: unhandled Ada exceptions"),
9425 case ex_catch_assert:
9426 printf_filtered (_("Catchpoint %d: failed Ada assertions"), b->number);
9430 internal_error (__FILE__, __LINE__, _("unexpected catchpoint type"));
9435 /* Virtual table for "catch exception" breakpoints. */
9437 static enum print_stop_action
9438 print_it_catch_exception (struct breakpoint *b)
9440 return print_it_exception (ex_catch_exception, b);
9444 print_one_catch_exception (struct breakpoint *b, CORE_ADDR *last_addr)
9446 print_one_exception (ex_catch_exception, b, last_addr);
9450 print_mention_catch_exception (struct breakpoint *b)
9452 print_mention_exception (ex_catch_exception, b);
9455 static struct breakpoint_ops catch_exception_breakpoint_ops =
9457 print_it_catch_exception,
9458 print_one_catch_exception,
9459 print_mention_catch_exception
9462 /* Virtual table for "catch exception unhandled" breakpoints. */
9464 static enum print_stop_action
9465 print_it_catch_exception_unhandled (struct breakpoint *b)
9467 return print_it_exception (ex_catch_exception_unhandled, b);
9471 print_one_catch_exception_unhandled (struct breakpoint *b, CORE_ADDR *last_addr)
9473 print_one_exception (ex_catch_exception_unhandled, b, last_addr);
9477 print_mention_catch_exception_unhandled (struct breakpoint *b)
9479 print_mention_exception (ex_catch_exception_unhandled, b);
9482 static struct breakpoint_ops catch_exception_unhandled_breakpoint_ops = {
9483 print_it_catch_exception_unhandled,
9484 print_one_catch_exception_unhandled,
9485 print_mention_catch_exception_unhandled
9488 /* Virtual table for "catch assert" breakpoints. */
9490 static enum print_stop_action
9491 print_it_catch_assert (struct breakpoint *b)
9493 return print_it_exception (ex_catch_assert, b);
9497 print_one_catch_assert (struct breakpoint *b, CORE_ADDR *last_addr)
9499 print_one_exception (ex_catch_assert, b, last_addr);
9503 print_mention_catch_assert (struct breakpoint *b)
9505 print_mention_exception (ex_catch_assert, b);
9508 static struct breakpoint_ops catch_assert_breakpoint_ops = {
9509 print_it_catch_assert,
9510 print_one_catch_assert,
9511 print_mention_catch_assert
9514 /* Return non-zero if B is an Ada exception catchpoint. */
9517 ada_exception_catchpoint_p (struct breakpoint *b)
9519 return (b->ops == &catch_exception_breakpoint_ops
9520 || b->ops == &catch_exception_unhandled_breakpoint_ops
9521 || b->ops == &catch_assert_breakpoint_ops);
9524 /* Return a newly allocated copy of the first space-separated token
9525 in ARGSP, and then adjust ARGSP to point immediately after that
9528 Return NULL if ARGPS does not contain any more tokens. */
9531 ada_get_next_arg (char **argsp)
9533 char *args = *argsp;
9537 /* Skip any leading white space. */
9539 while (isspace (*args))
9542 if (args[0] == '\0')
9543 return NULL; /* No more arguments. */
9545 /* Find the end of the current argument. */
9548 while (*end != '\0' && !isspace (*end))
9551 /* Adjust ARGSP to point to the start of the next argument. */
9555 /* Make a copy of the current argument and return it. */
9557 result = xmalloc (end - args + 1);
9558 strncpy (result, args, end - args);
9559 result[end - args] = '\0';
9564 /* Split the arguments specified in a "catch exception" command.
9565 Set EX to the appropriate catchpoint type.
9566 Set EXP_STRING to the name of the specific exception if
9567 specified by the user. */
9570 catch_ada_exception_command_split (char *args,
9571 enum exception_catchpoint_kind *ex,
9574 struct cleanup *old_chain = make_cleanup (null_cleanup, NULL);
9575 char *exception_name;
9577 exception_name = ada_get_next_arg (&args);
9578 make_cleanup (xfree, exception_name);
9580 /* Check that we do not have any more arguments. Anything else
9583 while (isspace (*args))
9586 if (args[0] != '\0')
9587 error (_("Junk at end of expression"));
9589 discard_cleanups (old_chain);
9591 if (exception_name == NULL)
9593 /* Catch all exceptions. */
9594 *ex = ex_catch_exception;
9597 else if (strcmp (exception_name, "unhandled") == 0)
9599 /* Catch unhandled exceptions. */
9600 *ex = ex_catch_exception_unhandled;
9605 /* Catch a specific exception. */
9606 *ex = ex_catch_exception;
9607 *exp_string = exception_name;
9611 /* Return the name of the symbol on which we should break in order to
9612 implement a catchpoint of the EX kind. */
9615 ada_exception_sym_name (enum exception_catchpoint_kind ex)
9617 gdb_assert (exception_info != NULL);
9621 case ex_catch_exception:
9622 return (exception_info->catch_exception_sym);
9624 case ex_catch_exception_unhandled:
9625 return (exception_info->catch_exception_unhandled_sym);
9627 case ex_catch_assert:
9628 return (exception_info->catch_assert_sym);
9631 internal_error (__FILE__, __LINE__,
9632 _("unexpected catchpoint kind (%d)"), ex);
9636 /* Return the breakpoint ops "virtual table" used for catchpoints
9639 static struct breakpoint_ops *
9640 ada_exception_breakpoint_ops (enum exception_catchpoint_kind ex)
9644 case ex_catch_exception:
9645 return (&catch_exception_breakpoint_ops);
9647 case ex_catch_exception_unhandled:
9648 return (&catch_exception_unhandled_breakpoint_ops);
9650 case ex_catch_assert:
9651 return (&catch_assert_breakpoint_ops);
9654 internal_error (__FILE__, __LINE__,
9655 _("unexpected catchpoint kind (%d)"), ex);
9659 /* Return the condition that will be used to match the current exception
9660 being raised with the exception that the user wants to catch. This
9661 assumes that this condition is used when the inferior just triggered
9662 an exception catchpoint.
9664 The string returned is a newly allocated string that needs to be
9665 deallocated later. */
9668 ada_exception_catchpoint_cond_string (const char *exp_string)
9670 return xstrprintf ("long_integer (e) = long_integer (&%s)", exp_string);
9673 /* Return the expression corresponding to COND_STRING evaluated at SAL. */
9675 static struct expression *
9676 ada_parse_catchpoint_condition (char *cond_string,
9677 struct symtab_and_line sal)
9679 return (parse_exp_1 (&cond_string, block_for_pc (sal.pc), 0));
9682 /* Return the symtab_and_line that should be used to insert an exception
9683 catchpoint of the TYPE kind.
9685 EX_STRING should contain the name of a specific exception
9686 that the catchpoint should catch, or NULL otherwise.
9688 The idea behind all the remaining parameters is that their names match
9689 the name of certain fields in the breakpoint structure that are used to
9690 handle exception catchpoints. This function returns the value to which
9691 these fields should be set, depending on the type of catchpoint we need
9694 If COND and COND_STRING are both non-NULL, any value they might
9695 hold will be free'ed, and then replaced by newly allocated ones.
9696 These parameters are left untouched otherwise. */
9698 static struct symtab_and_line
9699 ada_exception_sal (enum exception_catchpoint_kind ex, char *exp_string,
9700 char **addr_string, char **cond_string,
9701 struct expression **cond, struct breakpoint_ops **ops)
9703 const char *sym_name;
9705 struct symtab_and_line sal;
9707 /* First, find out which exception support info to use. */
9708 ada_exception_support_info_sniffer ();
9710 /* Then lookup the function on which we will break in order to catch
9711 the Ada exceptions requested by the user. */
9713 sym_name = ada_exception_sym_name (ex);
9714 sym = standard_lookup (sym_name, NULL, VAR_DOMAIN);
9716 /* The symbol we're looking up is provided by a unit in the GNAT runtime
9717 that should be compiled with debugging information. As a result, we
9718 expect to find that symbol in the symtabs. If we don't find it, then
9719 the target most likely does not support Ada exceptions, or we cannot
9720 insert exception breakpoints yet, because the GNAT runtime hasn't been
9723 /* brobecker/2006-12-26: It is conceivable that the runtime was compiled
9724 in such a way that no debugging information is produced for the symbol
9725 we are looking for. In this case, we could search the minimal symbols
9726 as a fall-back mechanism. This would still be operating in degraded
9727 mode, however, as we would still be missing the debugging information
9728 that is needed in order to extract the name of the exception being
9729 raised (this name is printed in the catchpoint message, and is also
9730 used when trying to catch a specific exception). We do not handle
9731 this case for now. */
9734 error (_("Unable to break on '%s' in this configuration."), sym_name);
9736 /* Make sure that the symbol we found corresponds to a function. */
9737 if (SYMBOL_CLASS (sym) != LOC_BLOCK)
9738 error (_("Symbol \"%s\" is not a function (class = %d)"),
9739 sym_name, SYMBOL_CLASS (sym));
9741 sal = find_function_start_sal (sym, 1);
9743 /* Set ADDR_STRING. */
9745 *addr_string = xstrdup (sym_name);
9747 /* Set the COND and COND_STRING (if not NULL). */
9749 if (cond_string != NULL && cond != NULL)
9751 if (*cond_string != NULL)
9753 xfree (*cond_string);
9754 *cond_string = NULL;
9761 if (exp_string != NULL)
9763 *cond_string = ada_exception_catchpoint_cond_string (exp_string);
9764 *cond = ada_parse_catchpoint_condition (*cond_string, sal);
9769 *ops = ada_exception_breakpoint_ops (ex);
9774 /* Parse the arguments (ARGS) of the "catch exception" command.
9776 Set TYPE to the appropriate exception catchpoint type.
9777 If the user asked the catchpoint to catch only a specific
9778 exception, then save the exception name in ADDR_STRING.
9780 See ada_exception_sal for a description of all the remaining
9781 function arguments of this function. */
9783 struct symtab_and_line
9784 ada_decode_exception_location (char *args, char **addr_string,
9785 char **exp_string, char **cond_string,
9786 struct expression **cond,
9787 struct breakpoint_ops **ops)
9789 enum exception_catchpoint_kind ex;
9791 catch_ada_exception_command_split (args, &ex, exp_string);
9792 return ada_exception_sal (ex, *exp_string, addr_string, cond_string,
9796 struct symtab_and_line
9797 ada_decode_assert_location (char *args, char **addr_string,
9798 struct breakpoint_ops **ops)
9800 /* Check that no argument where provided at the end of the command. */
9804 while (isspace (*args))
9807 error (_("Junk at end of arguments."));
9810 return ada_exception_sal (ex_catch_assert, NULL, addr_string, NULL, NULL,
9815 /* Information about operators given special treatment in functions
9817 /* Format: OP_DEFN (<operator>, <operator length>, <# args>, <binop>). */
9819 #define ADA_OPERATORS \
9820 OP_DEFN (OP_VAR_VALUE, 4, 0, 0) \
9821 OP_DEFN (BINOP_IN_BOUNDS, 3, 2, 0) \
9822 OP_DEFN (TERNOP_IN_RANGE, 1, 3, 0) \
9823 OP_DEFN (OP_ATR_FIRST, 1, 2, 0) \
9824 OP_DEFN (OP_ATR_LAST, 1, 2, 0) \
9825 OP_DEFN (OP_ATR_LENGTH, 1, 2, 0) \
9826 OP_DEFN (OP_ATR_IMAGE, 1, 2, 0) \
9827 OP_DEFN (OP_ATR_MAX, 1, 3, 0) \
9828 OP_DEFN (OP_ATR_MIN, 1, 3, 0) \
9829 OP_DEFN (OP_ATR_MODULUS, 1, 1, 0) \
9830 OP_DEFN (OP_ATR_POS, 1, 2, 0) \
9831 OP_DEFN (OP_ATR_SIZE, 1, 1, 0) \
9832 OP_DEFN (OP_ATR_TAG, 1, 1, 0) \
9833 OP_DEFN (OP_ATR_VAL, 1, 2, 0) \
9834 OP_DEFN (UNOP_QUAL, 3, 1, 0) \
9835 OP_DEFN (UNOP_IN_RANGE, 3, 1, 0) \
9836 OP_DEFN (OP_OTHERS, 1, 1, 0) \
9837 OP_DEFN (OP_POSITIONAL, 3, 1, 0) \
9838 OP_DEFN (OP_DISCRETE_RANGE, 1, 2, 0)
9841 ada_operator_length (struct expression *exp, int pc, int *oplenp, int *argsp)
9843 switch (exp->elts[pc - 1].opcode)
9846 operator_length_standard (exp, pc, oplenp, argsp);
9849 #define OP_DEFN(op, len, args, binop) \
9850 case op: *oplenp = len; *argsp = args; break;
9856 *argsp = longest_to_int (exp->elts[pc - 2].longconst);
9861 *argsp = longest_to_int (exp->elts[pc - 2].longconst) + 1;
9867 ada_op_name (enum exp_opcode opcode)
9872 return op_name_standard (opcode);
9874 #define OP_DEFN(op, len, args, binop) case op: return #op;
9879 return "OP_AGGREGATE";
9881 return "OP_CHOICES";
9887 /* As for operator_length, but assumes PC is pointing at the first
9888 element of the operator, and gives meaningful results only for the
9889 Ada-specific operators, returning 0 for *OPLENP and *ARGSP otherwise. */
9892 ada_forward_operator_length (struct expression *exp, int pc,
9893 int *oplenp, int *argsp)
9895 switch (exp->elts[pc].opcode)
9898 *oplenp = *argsp = 0;
9901 #define OP_DEFN(op, len, args, binop) \
9902 case op: *oplenp = len; *argsp = args; break;
9908 *argsp = longest_to_int (exp->elts[pc + 1].longconst);
9913 *argsp = longest_to_int (exp->elts[pc + 1].longconst) + 1;
9919 int len = longest_to_int (exp->elts[pc + 1].longconst);
9920 *oplenp = 4 + BYTES_TO_EXP_ELEM (len + 1);
9928 ada_dump_subexp_body (struct expression *exp, struct ui_file *stream, int elt)
9930 enum exp_opcode op = exp->elts[elt].opcode;
9935 ada_forward_operator_length (exp, elt, &oplen, &nargs);
9939 /* Ada attributes ('Foo). */
9946 case OP_ATR_MODULUS:
9955 /* XXX: gdb_sprint_host_address, type_sprint */
9956 fprintf_filtered (stream, _("Type @"));
9957 gdb_print_host_address (exp->elts[pc + 1].type, stream);
9958 fprintf_filtered (stream, " (");
9959 type_print (exp->elts[pc + 1].type, NULL, stream, 0);
9960 fprintf_filtered (stream, ")");
9962 case BINOP_IN_BOUNDS:
9963 fprintf_filtered (stream, " (%d)",
9964 longest_to_int (exp->elts[pc + 2].longconst));
9966 case TERNOP_IN_RANGE:
9971 case OP_DISCRETE_RANGE:
9979 char *name = &exp->elts[elt + 2].string;
9980 int len = longest_to_int (exp->elts[elt + 1].longconst);
9981 fprintf_filtered (stream, "Text: `%.*s'", len, name);
9986 return dump_subexp_body_standard (exp, stream, elt);
9990 for (i = 0; i < nargs; i += 1)
9991 elt = dump_subexp (exp, stream, elt);
9996 /* The Ada extension of print_subexp (q.v.). */
9999 ada_print_subexp (struct expression *exp, int *pos,
10000 struct ui_file *stream, enum precedence prec)
10002 int oplen, nargs, i;
10004 enum exp_opcode op = exp->elts[pc].opcode;
10006 ada_forward_operator_length (exp, pc, &oplen, &nargs);
10013 print_subexp_standard (exp, pos, stream, prec);
10017 fputs_filtered (SYMBOL_NATURAL_NAME (exp->elts[pc + 2].symbol), stream);
10020 case BINOP_IN_BOUNDS:
10021 /* XXX: sprint_subexp */
10022 print_subexp (exp, pos, stream, PREC_SUFFIX);
10023 fputs_filtered (" in ", stream);
10024 print_subexp (exp, pos, stream, PREC_SUFFIX);
10025 fputs_filtered ("'range", stream);
10026 if (exp->elts[pc + 1].longconst > 1)
10027 fprintf_filtered (stream, "(%ld)",
10028 (long) exp->elts[pc + 1].longconst);
10031 case TERNOP_IN_RANGE:
10032 if (prec >= PREC_EQUAL)
10033 fputs_filtered ("(", stream);
10034 /* XXX: sprint_subexp */
10035 print_subexp (exp, pos, stream, PREC_SUFFIX);
10036 fputs_filtered (" in ", stream);
10037 print_subexp (exp, pos, stream, PREC_EQUAL);
10038 fputs_filtered (" .. ", stream);
10039 print_subexp (exp, pos, stream, PREC_EQUAL);
10040 if (prec >= PREC_EQUAL)
10041 fputs_filtered (")", stream);
10046 case OP_ATR_LENGTH:
10050 case OP_ATR_MODULUS:
10055 if (exp->elts[*pos].opcode == OP_TYPE)
10057 if (TYPE_CODE (exp->elts[*pos + 1].type) != TYPE_CODE_VOID)
10058 LA_PRINT_TYPE (exp->elts[*pos + 1].type, "", stream, 0, 0);
10062 print_subexp (exp, pos, stream, PREC_SUFFIX);
10063 fprintf_filtered (stream, "'%s", ada_attribute_name (op));
10067 for (tem = 1; tem < nargs; tem += 1)
10069 fputs_filtered ((tem == 1) ? " (" : ", ", stream);
10070 print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
10072 fputs_filtered (")", stream);
10077 type_print (exp->elts[pc + 1].type, "", stream, 0);
10078 fputs_filtered ("'(", stream);
10079 print_subexp (exp, pos, stream, PREC_PREFIX);
10080 fputs_filtered (")", stream);
10083 case UNOP_IN_RANGE:
10084 /* XXX: sprint_subexp */
10085 print_subexp (exp, pos, stream, PREC_SUFFIX);
10086 fputs_filtered (" in ", stream);
10087 LA_PRINT_TYPE (exp->elts[pc + 1].type, "", stream, 1, 0);
10090 case OP_DISCRETE_RANGE:
10091 print_subexp (exp, pos, stream, PREC_SUFFIX);
10092 fputs_filtered ("..", stream);
10093 print_subexp (exp, pos, stream, PREC_SUFFIX);
10097 fputs_filtered ("others => ", stream);
10098 print_subexp (exp, pos, stream, PREC_SUFFIX);
10102 for (i = 0; i < nargs-1; i += 1)
10105 fputs_filtered ("|", stream);
10106 print_subexp (exp, pos, stream, PREC_SUFFIX);
10108 fputs_filtered (" => ", stream);
10109 print_subexp (exp, pos, stream, PREC_SUFFIX);
10112 case OP_POSITIONAL:
10113 print_subexp (exp, pos, stream, PREC_SUFFIX);
10117 fputs_filtered ("(", stream);
10118 for (i = 0; i < nargs; i += 1)
10121 fputs_filtered (", ", stream);
10122 print_subexp (exp, pos, stream, PREC_SUFFIX);
10124 fputs_filtered (")", stream);
10129 /* Table mapping opcodes into strings for printing operators
10130 and precedences of the operators. */
10132 static const struct op_print ada_op_print_tab[] = {
10133 {":=", BINOP_ASSIGN, PREC_ASSIGN, 1},
10134 {"or else", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
10135 {"and then", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
10136 {"or", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
10137 {"xor", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
10138 {"and", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
10139 {"=", BINOP_EQUAL, PREC_EQUAL, 0},
10140 {"/=", BINOP_NOTEQUAL, PREC_EQUAL, 0},
10141 {"<=", BINOP_LEQ, PREC_ORDER, 0},
10142 {">=", BINOP_GEQ, PREC_ORDER, 0},
10143 {">", BINOP_GTR, PREC_ORDER, 0},
10144 {"<", BINOP_LESS, PREC_ORDER, 0},
10145 {">>", BINOP_RSH, PREC_SHIFT, 0},
10146 {"<<", BINOP_LSH, PREC_SHIFT, 0},
10147 {"+", BINOP_ADD, PREC_ADD, 0},
10148 {"-", BINOP_SUB, PREC_ADD, 0},
10149 {"&", BINOP_CONCAT, PREC_ADD, 0},
10150 {"*", BINOP_MUL, PREC_MUL, 0},
10151 {"/", BINOP_DIV, PREC_MUL, 0},
10152 {"rem", BINOP_REM, PREC_MUL, 0},
10153 {"mod", BINOP_MOD, PREC_MUL, 0},
10154 {"**", BINOP_EXP, PREC_REPEAT, 0},
10155 {"@", BINOP_REPEAT, PREC_REPEAT, 0},
10156 {"-", UNOP_NEG, PREC_PREFIX, 0},
10157 {"+", UNOP_PLUS, PREC_PREFIX, 0},
10158 {"not ", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
10159 {"not ", UNOP_COMPLEMENT, PREC_PREFIX, 0},
10160 {"abs ", UNOP_ABS, PREC_PREFIX, 0},
10161 {".all", UNOP_IND, PREC_SUFFIX, 1},
10162 {"'access", UNOP_ADDR, PREC_SUFFIX, 1},
10163 {"'size", OP_ATR_SIZE, PREC_SUFFIX, 1},
10167 /* Fundamental Ada Types */
10169 /* Create a fundamental Ada type using default reasonable for the current
10172 Some object/debugging file formats (DWARF version 1, COFF, etc) do not
10173 define fundamental types such as "int" or "double". Others (stabs or
10174 DWARF version 2, etc) do define fundamental types. For the formats which
10175 don't provide fundamental types, gdb can create such types using this
10178 FIXME: Some compilers distinguish explicitly signed integral types
10179 (signed short, signed int, signed long) from "regular" integral types
10180 (short, int, long) in the debugging information. There is some dis-
10181 agreement as to how useful this feature is. In particular, gcc does
10182 not support this. Also, only some debugging formats allow the
10183 distinction to be passed on to a debugger. For now, we always just
10184 use "short", "int", or "long" as the type name, for both the implicit
10185 and explicitly signed types. This also makes life easier for the
10186 gdb test suite since we don't have to account for the differences
10187 in output depending upon what the compiler and debugging format
10188 support. We will probably have to re-examine the issue when gdb
10189 starts taking it's fundamental type information directly from the
10190 debugging information supplied by the compiler. fnf@cygnus.com */
10192 static struct type *
10193 ada_create_fundamental_type (struct objfile *objfile, int typeid)
10195 struct type *type = NULL;
10200 /* FIXME: For now, if we are asked to produce a type not in this
10201 language, create the equivalent of a C integer type with the
10202 name "<?type?>". When all the dust settles from the type
10203 reconstruction work, this should probably become an error. */
10204 type = init_type (TYPE_CODE_INT,
10205 gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
10206 0, "<?type?>", objfile);
10207 warning (_("internal error: no Ada fundamental type %d"), typeid);
10210 type = init_type (TYPE_CODE_VOID,
10211 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
10212 0, "void", objfile);
10215 type = init_type (TYPE_CODE_INT,
10216 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
10217 0, "character", objfile);
10219 case FT_SIGNED_CHAR:
10220 type = init_type (TYPE_CODE_INT,
10221 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
10222 0, "signed char", objfile);
10224 case FT_UNSIGNED_CHAR:
10225 type = init_type (TYPE_CODE_INT,
10226 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
10227 TYPE_FLAG_UNSIGNED, "unsigned char", objfile);
10230 type = init_type (TYPE_CODE_INT,
10231 gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT,
10232 0, "short_integer", objfile);
10234 case FT_SIGNED_SHORT:
10235 type = init_type (TYPE_CODE_INT,
10236 gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT,
10237 0, "short_integer", objfile);
10239 case FT_UNSIGNED_SHORT:
10240 type = init_type (TYPE_CODE_INT,
10241 gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT,
10242 TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
10245 type = init_type (TYPE_CODE_INT,
10246 gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
10247 0, "integer", objfile);
10249 case FT_SIGNED_INTEGER:
10250 type = init_type (TYPE_CODE_INT,
10251 gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
10252 0, "integer", objfile); /* FIXME -fnf */
10254 case FT_UNSIGNED_INTEGER:
10255 type = init_type (TYPE_CODE_INT,
10256 gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
10257 TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
10260 type = init_type (TYPE_CODE_INT,
10261 gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT,
10262 0, "long_integer", objfile);
10264 case FT_SIGNED_LONG:
10265 type = init_type (TYPE_CODE_INT,
10266 gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT,
10267 0, "long_integer", objfile);
10269 case FT_UNSIGNED_LONG:
10270 type = init_type (TYPE_CODE_INT,
10271 gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT,
10272 TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
10275 type = init_type (TYPE_CODE_INT,
10276 gdbarch_long_long_bit (current_gdbarch)
10278 0, "long_long_integer", objfile);
10280 case FT_SIGNED_LONG_LONG:
10281 type = init_type (TYPE_CODE_INT,
10282 gdbarch_long_long_bit (current_gdbarch)
10284 0, "long_long_integer", objfile);
10286 case FT_UNSIGNED_LONG_LONG:
10287 type = init_type (TYPE_CODE_INT,
10288 gdbarch_long_long_bit (current_gdbarch)
10290 TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
10293 type = init_type (TYPE_CODE_FLT,
10294 gdbarch_float_bit (current_gdbarch) / TARGET_CHAR_BIT,
10295 0, "float", objfile);
10297 case FT_DBL_PREC_FLOAT:
10298 type = init_type (TYPE_CODE_FLT,
10299 gdbarch_double_bit (current_gdbarch) / TARGET_CHAR_BIT,
10300 0, "long_float", objfile);
10302 case FT_EXT_PREC_FLOAT:
10303 type = init_type (TYPE_CODE_FLT,
10304 gdbarch_long_double_bit (current_gdbarch)
10306 0, "long_long_float", objfile);
10312 enum ada_primitive_types {
10313 ada_primitive_type_int,
10314 ada_primitive_type_long,
10315 ada_primitive_type_short,
10316 ada_primitive_type_char,
10317 ada_primitive_type_float,
10318 ada_primitive_type_double,
10319 ada_primitive_type_void,
10320 ada_primitive_type_long_long,
10321 ada_primitive_type_long_double,
10322 ada_primitive_type_natural,
10323 ada_primitive_type_positive,
10324 ada_primitive_type_system_address,
10325 nr_ada_primitive_types
10329 ada_language_arch_info (struct gdbarch *current_gdbarch,
10330 struct language_arch_info *lai)
10332 const struct builtin_type *builtin = builtin_type (current_gdbarch);
10333 lai->primitive_type_vector
10334 = GDBARCH_OBSTACK_CALLOC (current_gdbarch, nr_ada_primitive_types + 1,
10336 lai->primitive_type_vector [ada_primitive_type_int] =
10337 init_type (TYPE_CODE_INT,
10338 gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
10339 0, "integer", (struct objfile *) NULL);
10340 lai->primitive_type_vector [ada_primitive_type_long] =
10341 init_type (TYPE_CODE_INT,
10342 gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT,
10343 0, "long_integer", (struct objfile *) NULL);
10344 lai->primitive_type_vector [ada_primitive_type_short] =
10345 init_type (TYPE_CODE_INT,
10346 gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT,
10347 0, "short_integer", (struct objfile *) NULL);
10348 lai->string_char_type =
10349 lai->primitive_type_vector [ada_primitive_type_char] =
10350 init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
10351 0, "character", (struct objfile *) NULL);
10352 lai->primitive_type_vector [ada_primitive_type_float] =
10353 init_type (TYPE_CODE_FLT,
10354 gdbarch_float_bit (current_gdbarch)/ TARGET_CHAR_BIT,
10355 0, "float", (struct objfile *) NULL);
10356 lai->primitive_type_vector [ada_primitive_type_double] =
10357 init_type (TYPE_CODE_FLT,
10358 gdbarch_double_bit (current_gdbarch) / TARGET_CHAR_BIT,
10359 0, "long_float", (struct objfile *) NULL);
10360 lai->primitive_type_vector [ada_primitive_type_long_long] =
10361 init_type (TYPE_CODE_INT,
10362 gdbarch_long_long_bit (current_gdbarch) / TARGET_CHAR_BIT,
10363 0, "long_long_integer", (struct objfile *) NULL);
10364 lai->primitive_type_vector [ada_primitive_type_long_double] =
10365 init_type (TYPE_CODE_FLT,
10366 gdbarch_double_bit (current_gdbarch) / TARGET_CHAR_BIT,
10367 0, "long_long_float", (struct objfile *) NULL);
10368 lai->primitive_type_vector [ada_primitive_type_natural] =
10369 init_type (TYPE_CODE_INT,
10370 gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
10371 0, "natural", (struct objfile *) NULL);
10372 lai->primitive_type_vector [ada_primitive_type_positive] =
10373 init_type (TYPE_CODE_INT,
10374 gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
10375 0, "positive", (struct objfile *) NULL);
10376 lai->primitive_type_vector [ada_primitive_type_void] = builtin->builtin_void;
10378 lai->primitive_type_vector [ada_primitive_type_system_address] =
10379 lookup_pointer_type (init_type (TYPE_CODE_VOID, 1, 0, "void",
10380 (struct objfile *) NULL));
10381 TYPE_NAME (lai->primitive_type_vector [ada_primitive_type_system_address])
10382 = "system__address";
10385 /* Language vector */
10387 /* Not really used, but needed in the ada_language_defn. */
10390 emit_char (int c, struct ui_file *stream, int quoter)
10392 ada_emit_char (c, stream, quoter, 1);
10398 warnings_issued = 0;
10399 return ada_parse ();
10402 static const struct exp_descriptor ada_exp_descriptor = {
10404 ada_operator_length,
10406 ada_dump_subexp_body,
10407 ada_evaluate_subexp
10410 const struct language_defn ada_language_defn = {
10411 "ada", /* Language name */
10416 case_sensitive_on, /* Yes, Ada is case-insensitive, but
10417 that's not quite what this means. */
10419 &ada_exp_descriptor,
10423 ada_printchar, /* Print a character constant */
10424 ada_printstr, /* Function to print string constant */
10425 emit_char, /* Function to print single char (not used) */
10426 ada_create_fundamental_type, /* Create fundamental type in this language */
10427 ada_print_type, /* Print a type using appropriate syntax */
10428 ada_val_print, /* Print a value using appropriate syntax */
10429 ada_value_print, /* Print a top-level value */
10430 NULL, /* Language specific skip_trampoline */
10431 NULL, /* value_of_this */
10432 ada_lookup_symbol_nonlocal, /* Looking up non-local symbols. */
10433 basic_lookup_transparent_type, /* lookup_transparent_type */
10434 ada_la_decode, /* Language specific symbol demangler */
10435 NULL, /* Language specific class_name_from_physname */
10436 ada_op_print_tab, /* expression operators for printing */
10437 0, /* c-style arrays */
10438 1, /* String lower bound */
10440 ada_get_gdb_completer_word_break_characters,
10441 ada_language_arch_info,
10442 ada_print_array_index,
10447 _initialize_ada_language (void)
10449 add_language (&ada_language_defn);
10451 varsize_limit = 65536;
10453 obstack_init (&symbol_list_obstack);
10455 decoded_names_store = htab_create_alloc
10456 (256, htab_hash_string, (int (*)(const void *, const void *)) streq,
10457 NULL, xcalloc, xfree);