1 /* Support for printing Ada values for GDB, the GNU debugger.
3 Copyright (C) 1986-2016 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #include "expression.h"
35 static int print_field_values (struct type *, const gdb_byte *,
37 struct ui_file *, int,
39 const struct value_print_options *,
40 int, struct type *, int,
41 const struct language_defn *);
44 /* Make TYPE unsigned if its range of values includes no negatives. */
46 adjust_type_signedness (struct type *type)
48 if (type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE
49 && TYPE_LOW_BOUND (type) >= 0)
50 TYPE_UNSIGNED (type) = 1;
53 /* Assuming TYPE is a simple array type, prints its lower bound on STREAM,
54 if non-standard (i.e., other than 1 for numbers, other than lower bound
55 of index type for enumerated type). Returns 1 if something printed,
59 print_optional_low_bound (struct ui_file *stream, struct type *type,
60 const struct value_print_options *options)
62 struct type *index_type;
66 if (options->print_array_indexes)
69 if (!get_array_bounds (type, &low_bound, &high_bound))
72 /* If this is an empty array, then don't print the lower bound.
73 That would be confusing, because we would print the lower bound,
74 followed by... nothing! */
75 if (low_bound > high_bound)
78 index_type = TYPE_INDEX_TYPE (type);
80 while (TYPE_CODE (index_type) == TYPE_CODE_RANGE)
82 /* We need to know what the base type is, in order to do the
83 appropriate check below. Otherwise, if this is a subrange
84 of an enumerated type, where the underlying value of the
85 first element is typically 0, we might test the low bound
86 against the wrong value. */
87 index_type = TYPE_TARGET_TYPE (index_type);
90 switch (TYPE_CODE (index_type))
97 if (low_bound == TYPE_FIELD_ENUMVAL (index_type, 0))
100 case TYPE_CODE_UNDEF:
109 ada_print_scalar (index_type, low_bound, stream);
110 fprintf_filtered (stream, " => ");
114 /* Version of val_print_array_elements for GNAT-style packed arrays.
115 Prints elements of packed array of type TYPE at bit offset
116 BITOFFSET from VALADDR on STREAM. Formats according to OPTIONS and
117 separates with commas. RECURSE is the recursion (nesting) level.
118 TYPE must have been decoded (as by ada_coerce_to_simple_array). */
121 val_print_packed_array_elements (struct type *type, const gdb_byte *valaddr,
123 int bitoffset, struct ui_file *stream,
126 const struct value_print_options *options)
129 unsigned int things_printed = 0;
131 struct type *elttype, *index_type;
132 unsigned long bitsize = TYPE_FIELD_BITSIZE (type, 0);
133 struct value *mark = value_mark ();
136 elttype = TYPE_TARGET_TYPE (type);
137 index_type = TYPE_INDEX_TYPE (type);
142 if (get_discrete_bounds (index_type, &low, &high) < 0)
145 len = high - low + 1;
149 annotate_array_section_begin (i, elttype);
151 while (i < len && things_printed < options->print_max)
153 struct value *v0, *v1;
158 if (options->prettyformat_arrays)
160 fprintf_filtered (stream, ",\n");
161 print_spaces_filtered (2 + 2 * recurse, stream);
165 fprintf_filtered (stream, ", ");
168 wrap_here (n_spaces (2 + 2 * recurse));
169 maybe_print_array_index (index_type, i + low, stream, options);
172 v0 = ada_value_primitive_packed_val (NULL, valaddr + offset,
173 (i0 * bitsize) / HOST_CHAR_BIT,
174 (i0 * bitsize) % HOST_CHAR_BIT,
181 v1 = ada_value_primitive_packed_val (NULL, valaddr + offset,
182 (i * bitsize) / HOST_CHAR_BIT,
183 (i * bitsize) % HOST_CHAR_BIT,
185 if (TYPE_LENGTH (check_typedef (value_type (v0)))
186 != TYPE_LENGTH (check_typedef (value_type (v1))))
188 if (!value_contents_eq (v0, value_embedded_offset (v0),
189 v1, value_embedded_offset (v1),
190 TYPE_LENGTH (check_typedef (value_type (v0)))))
194 if (i - i0 > options->repeat_count_threshold)
196 struct value_print_options opts = *options;
200 value_embedded_offset (v0), 0, stream,
201 recurse + 1, v0, &opts, current_language);
202 annotate_elt_rep (i - i0);
203 fprintf_filtered (stream, _(" <repeats %u times>"), i - i0);
204 annotate_elt_rep_end ();
210 struct value_print_options opts = *options;
213 for (j = i0; j < i; j += 1)
217 if (options->prettyformat_arrays)
219 fprintf_filtered (stream, ",\n");
220 print_spaces_filtered (2 + 2 * recurse, stream);
224 fprintf_filtered (stream, ", ");
226 wrap_here (n_spaces (2 + 2 * recurse));
227 maybe_print_array_index (index_type, j + low,
231 value_embedded_offset (v0), 0, stream,
232 recurse + 1, v0, &opts, current_language);
236 things_printed += i - i0;
238 annotate_array_section_end ();
241 fprintf_filtered (stream, "...");
244 value_free_to_mark (mark);
248 printable_val_type (struct type *type, const gdb_byte *valaddr)
250 return ada_to_fixed_type (ada_aligned_type (type), valaddr, 0, NULL, 1);
253 /* Print the character C on STREAM as part of the contents of a literal
254 string whose delimiter is QUOTER. TYPE_LEN is the length in bytes
258 ada_emit_char (int c, struct type *type, struct ui_file *stream,
259 int quoter, int type_len)
261 /* If this character fits in the normal ASCII range, and is
262 a printable character, then print the character as if it was
263 an ASCII character, even if this is a wide character.
264 The UCHAR_MAX check is necessary because the isascii function
265 requires that its argument have a value of an unsigned char,
266 or EOF (EOF is obviously not printable). */
267 if (c <= UCHAR_MAX && isascii (c) && isprint (c))
269 if (c == quoter && c == '"')
270 fprintf_filtered (stream, "\"\"");
272 fprintf_filtered (stream, "%c", c);
275 fprintf_filtered (stream, "[\"%0*x\"]", type_len * 2, c);
278 /* Character #I of STRING, given that TYPE_LEN is the size in bytes
282 char_at (const gdb_byte *string, int i, int type_len,
283 enum bfd_endian byte_order)
288 return (int) extract_unsigned_integer (string + type_len * i,
289 type_len, byte_order);
292 /* Print a floating-point value of type TYPE, pointed to in GDB by
293 VALADDR, on STREAM. Use Ada formatting conventions: there must be
294 a decimal point, and at least one digit before and after the
295 point. We use the GNAT format for NaNs and infinities. */
298 ada_print_floating (const gdb_byte *valaddr, struct type *type,
299 struct ui_file *stream)
301 struct ui_file *tmp_stream = mem_fileopen ();
302 struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_stream);
304 print_floating (valaddr, type, tmp_stream);
306 std::string s = ui_file_as_string (tmp_stream);
307 size_t skip_count = 0;
309 /* Modify for Ada rules. */
311 size_t pos = s.find ("inf");
312 if (pos == std::string::npos)
313 pos = s.find ("Inf");
314 if (pos == std::string::npos)
315 pos = s.find ("INF");
316 if (pos != std::string::npos)
317 s.replace (pos, 3, "Inf");
319 if (pos == std::string::npos)
321 pos = s.find ("nan");
322 if (pos == std::string::npos)
323 pos = s.find ("NaN");
324 if (pos == std::string::npos)
325 pos = s.find ("Nan");
326 if (pos != std::string::npos)
328 s[pos] = s[pos + 2] = 'N';
334 if (pos == std::string::npos
335 && s.find ('.') == std::string::npos)
338 if (pos == std::string::npos)
339 fprintf_filtered (stream, "%s.0", s.c_str ());
341 fprintf_filtered (stream, "%.*s.0%s", (int) pos, s.c_str (), &s[pos]);
344 fprintf_filtered (stream, "%s", &s[skip_count]);
346 do_cleanups (cleanups);
350 ada_printchar (int c, struct type *type, struct ui_file *stream)
352 fputs_filtered ("'", stream);
353 ada_emit_char (c, type, stream, '\'', TYPE_LENGTH (type));
354 fputs_filtered ("'", stream);
357 /* [From print_type_scalar in typeprint.c]. Print VAL on STREAM in a
358 form appropriate for TYPE, if non-NULL. If TYPE is NULL, print VAL
359 like a default signed integer. */
362 ada_print_scalar (struct type *type, LONGEST val, struct ui_file *stream)
369 print_longest (stream, 'd', 0, val);
373 type = ada_check_typedef (type);
375 switch (TYPE_CODE (type))
379 len = TYPE_NFIELDS (type);
380 for (i = 0; i < len; i++)
382 if (TYPE_FIELD_ENUMVAL (type, i) == val)
389 fputs_filtered (ada_enum_name (TYPE_FIELD_NAME (type, i)), stream);
393 print_longest (stream, 'd', 0, val);
398 print_longest (stream, TYPE_UNSIGNED (type) ? 'u' : 'd', 0, val);
402 LA_PRINT_CHAR (val, type, stream);
406 fprintf_filtered (stream, val ? "true" : "false");
409 case TYPE_CODE_RANGE:
410 ada_print_scalar (TYPE_TARGET_TYPE (type), val, stream);
413 case TYPE_CODE_UNDEF:
415 case TYPE_CODE_ARRAY:
416 case TYPE_CODE_STRUCT:
417 case TYPE_CODE_UNION:
422 case TYPE_CODE_STRING:
423 case TYPE_CODE_ERROR:
424 case TYPE_CODE_MEMBERPTR:
425 case TYPE_CODE_METHODPTR:
426 case TYPE_CODE_METHOD:
428 warning (_("internal error: unhandled type in ada_print_scalar"));
432 error (_("Invalid type code in symbol table."));
437 /* Print the character string STRING, printing at most LENGTH characters.
438 Printing stops early if the number hits print_max; repeat counts
439 are printed as appropriate. Print ellipses at the end if we
440 had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
441 TYPE_LEN is the length (1 or 2) of the character type. */
444 printstr (struct ui_file *stream, struct type *elttype, const gdb_byte *string,
445 unsigned int length, int force_ellipses, int type_len,
446 const struct value_print_options *options)
448 enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (elttype));
450 unsigned int things_printed = 0;
456 fputs_filtered ("\"\"", stream);
460 for (i = 0; i < length && things_printed < options->print_max; i += 1)
462 /* Position of the character we are examining
463 to see whether it is repeated. */
465 /* Number of repetitions we have detected so far. */
472 fputs_filtered (", ", stream);
479 && char_at (string, rep1, type_len, byte_order)
480 == char_at (string, i, type_len, byte_order))
486 if (reps > options->repeat_count_threshold)
490 fputs_filtered ("\", ", stream);
493 fputs_filtered ("'", stream);
494 ada_emit_char (char_at (string, i, type_len, byte_order),
495 elttype, stream, '\'', type_len);
496 fputs_filtered ("'", stream);
497 fprintf_filtered (stream, _(" <repeats %u times>"), reps);
499 things_printed += options->repeat_count_threshold;
506 fputs_filtered ("\"", stream);
509 ada_emit_char (char_at (string, i, type_len, byte_order),
510 elttype, stream, '"', type_len);
515 /* Terminate the quotes if necessary. */
517 fputs_filtered ("\"", stream);
519 if (force_ellipses || i < length)
520 fputs_filtered ("...", stream);
524 ada_printstr (struct ui_file *stream, struct type *type,
525 const gdb_byte *string, unsigned int length,
526 const char *encoding, int force_ellipses,
527 const struct value_print_options *options)
529 printstr (stream, type, string, length, force_ellipses, TYPE_LENGTH (type),
534 print_variant_part (struct type *type, int field_num,
535 const gdb_byte *valaddr, int offset,
536 struct ui_file *stream, int recurse,
538 const struct value_print_options *options,
540 struct type *outer_type, int outer_offset,
541 const struct language_defn *language)
543 struct type *var_type = TYPE_FIELD_TYPE (type, field_num);
544 int which = ada_which_variant_applies (var_type, outer_type,
545 valaddr + outer_offset);
550 return print_field_values
551 (TYPE_FIELD_TYPE (var_type, which),
553 offset + TYPE_FIELD_BITPOS (type, field_num) / HOST_CHAR_BIT
554 + TYPE_FIELD_BITPOS (var_type, which) / HOST_CHAR_BIT,
555 stream, recurse, val, options,
556 comma_needed, outer_type, outer_offset, language);
559 /* Print out fields of value at VALADDR + OFFSET having structure type TYPE.
561 TYPE, VALADDR, OFFSET, STREAM, RECURSE, and OPTIONS have the same
562 meanings as in ada_print_value and ada_val_print.
564 OUTER_TYPE and OUTER_OFFSET give type and address of enclosing
565 record (used to get discriminant values when printing variant
568 COMMA_NEEDED is 1 if fields have been printed at the current recursion
569 level, so that a comma is needed before any field printed by this
572 Returns 1 if COMMA_NEEDED or any fields were printed. */
575 print_field_values (struct type *type, const gdb_byte *valaddr,
576 int offset, struct ui_file *stream, int recurse,
578 const struct value_print_options *options,
580 struct type *outer_type, int outer_offset,
581 const struct language_defn *language)
585 len = TYPE_NFIELDS (type);
587 for (i = 0; i < len; i += 1)
589 if (ada_is_ignored_field (type, i))
592 if (ada_is_wrapper_field (type, i))
595 print_field_values (TYPE_FIELD_TYPE (type, i),
598 + TYPE_FIELD_BITPOS (type, i) / HOST_CHAR_BIT),
599 stream, recurse, val, options,
600 comma_needed, type, offset, language);
603 else if (ada_is_variant_part (type, i))
606 print_variant_part (type, i, valaddr,
607 offset, stream, recurse, val,
608 options, comma_needed,
609 outer_type, outer_offset, language);
614 fprintf_filtered (stream, ", ");
617 if (options->prettyformat)
619 fprintf_filtered (stream, "\n");
620 print_spaces_filtered (2 + 2 * recurse, stream);
624 wrap_here (n_spaces (2 + 2 * recurse));
627 annotate_field_begin (TYPE_FIELD_TYPE (type, i));
628 fprintf_filtered (stream, "%.*s",
629 ada_name_prefix_len (TYPE_FIELD_NAME (type, i)),
630 TYPE_FIELD_NAME (type, i));
631 annotate_field_name_end ();
632 fputs_filtered (" => ", stream);
633 annotate_field_value ();
635 if (TYPE_FIELD_PACKED (type, i))
637 /* Bitfields require special handling, especially due to byte
639 if (HAVE_CPLUS_STRUCT (type) && TYPE_FIELD_IGNORE (type, i))
641 fputs_filtered (_("<optimized out or zero length>"), stream);
646 int bit_pos = TYPE_FIELD_BITPOS (type, i);
647 int bit_size = TYPE_FIELD_BITSIZE (type, i);
648 struct value_print_options opts;
650 adjust_type_signedness (TYPE_FIELD_TYPE (type, i));
651 v = ada_value_primitive_packed_val
653 offset + bit_pos / HOST_CHAR_BIT,
654 bit_pos % HOST_CHAR_BIT,
655 bit_size, TYPE_FIELD_TYPE (type, i));
658 val_print (TYPE_FIELD_TYPE (type, i),
659 value_embedded_offset (v), 0,
660 stream, recurse + 1, v,
666 struct value_print_options opts = *options;
669 val_print (TYPE_FIELD_TYPE (type, i),
670 (offset + TYPE_FIELD_BITPOS (type, i) / HOST_CHAR_BIT),
671 0, stream, recurse + 1, val, &opts, language);
673 annotate_field_end ();
679 /* Implement Ada val_print'ing for the case where TYPE is
680 a TYPE_CODE_ARRAY of characters. */
683 ada_val_print_string (struct type *type, const gdb_byte *valaddr,
684 int offset, int offset_aligned, CORE_ADDR address,
685 struct ui_file *stream, int recurse,
686 struct value *original_value,
687 const struct value_print_options *options)
689 enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
690 struct type *elttype = TYPE_TARGET_TYPE (type);
694 /* We know that ELTTYPE cannot possibly be null, because we assume
695 that we're called only when TYPE is a string-like type.
696 Similarly, the size of ELTTYPE should also be non-null, since
697 it's a character-like type. */
698 gdb_assert (elttype != NULL);
699 gdb_assert (TYPE_LENGTH (elttype) != 0);
701 eltlen = TYPE_LENGTH (elttype);
702 len = TYPE_LENGTH (type) / eltlen;
704 if (options->prettyformat_arrays)
705 print_spaces_filtered (2 + 2 * recurse, stream);
707 /* If requested, look for the first null char and only print
708 elements up to it. */
709 if (options->stop_print_at_null)
713 /* Look for a NULL char. */
716 && temp_len < options->print_max
717 && char_at (valaddr + offset_aligned,
718 temp_len, eltlen, byte_order) != 0);
723 printstr (stream, elttype, valaddr + offset_aligned, len, 0,
727 /* Implement Ada val_print-ing for GNAT arrays (Eg. fat pointers,
728 thin pointers, etc). */
731 ada_val_print_gnat_array (struct type *type, const gdb_byte *valaddr,
732 int offset, CORE_ADDR address,
733 struct ui_file *stream, int recurse,
734 struct value *original_value,
735 const struct value_print_options *options,
736 const struct language_defn *language)
738 struct value *mark = value_mark ();
741 val = value_from_contents_and_address (type, valaddr + offset, address);
742 /* If this is a reference, coerce it now. This helps taking care
743 of the case where ADDRESS is meaningless because original_value
745 val = coerce_ref (val);
746 if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) /* array access type. */
747 val = ada_coerce_to_simple_array_ptr (val);
749 val = ada_coerce_to_simple_array (val);
752 gdb_assert (TYPE_CODE (type) == TYPE_CODE_TYPEDEF);
753 fprintf_filtered (stream, "0x0");
756 val_print (value_type (val),
757 value_embedded_offset (val), value_address (val),
758 stream, recurse, val, options, language);
759 value_free_to_mark (mark);
762 /* Implement Ada val_print'ing for the case where TYPE is
766 ada_val_print_ptr (struct type *type, const gdb_byte *valaddr,
767 int offset, int offset_aligned, CORE_ADDR address,
768 struct ui_file *stream, int recurse,
769 struct value *original_value,
770 const struct value_print_options *options,
771 const struct language_defn *language)
773 val_print (type, offset, address, stream, recurse,
774 original_value, options, language_def (language_c));
776 if (ada_is_tag_type (type))
779 value_from_contents_and_address (type,
780 valaddr + offset_aligned,
781 address + offset_aligned);
782 const char *name = ada_tag_name (val);
785 fprintf_filtered (stream, " (%s)", name);
789 /* Implement Ada val_print'ing for the case where TYPE is
790 a TYPE_CODE_INT or TYPE_CODE_RANGE. */
793 ada_val_print_num (struct type *type, const gdb_byte *valaddr,
794 int offset, int offset_aligned, CORE_ADDR address,
795 struct ui_file *stream, int recurse,
796 struct value *original_value,
797 const struct value_print_options *options,
798 const struct language_defn *language)
800 if (ada_is_fixed_point_type (type))
802 LONGEST v = unpack_long (type, valaddr + offset_aligned);
804 fprintf_filtered (stream, TYPE_LENGTH (type) < 4 ? "%.11g" : "%.17g",
805 (double) ada_fixed_to_float (type, v));
808 else if (TYPE_CODE (type) == TYPE_CODE_RANGE)
810 struct type *target_type = TYPE_TARGET_TYPE (type);
812 if (TYPE_LENGTH (type) != TYPE_LENGTH (target_type))
814 /* Obscure case of range type that has different length from
815 its base type. Perform a conversion, or we will get a
816 nonsense value. Actually, we could use the same
817 code regardless of lengths; I'm just avoiding a cast. */
819 = value_from_contents_and_address (type, valaddr + offset, 0);
820 struct value *v = value_cast (target_type, v1);
822 val_print (target_type,
823 value_embedded_offset (v), 0, stream,
824 recurse + 1, v, options, language);
827 val_print (TYPE_TARGET_TYPE (type), offset,
828 address, stream, recurse, original_value,
834 int format = (options->format ? options->format
835 : options->output_format);
839 struct value_print_options opts = *options;
841 opts.format = format;
842 val_print_scalar_formatted (type, offset_aligned,
843 original_value, &opts, 0, stream);
845 else if (ada_is_system_address_type (type))
847 /* FIXME: We want to print System.Address variables using
848 the same format as for any access type. But for some
849 reason GNAT encodes the System.Address type as an int,
850 so we have to work-around this deficiency by handling
851 System.Address values as a special case. */
853 struct gdbarch *gdbarch = get_type_arch (type);
854 struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr;
855 CORE_ADDR addr = extract_typed_address (valaddr + offset_aligned,
858 fprintf_filtered (stream, "(");
859 type_print (type, "", stream, -1);
860 fprintf_filtered (stream, ") ");
861 fputs_filtered (paddress (gdbarch, addr), stream);
865 val_print_type_code_int (type, valaddr + offset_aligned, stream);
866 if (ada_is_character_type (type))
870 fputs_filtered (" ", stream);
871 c = unpack_long (type, valaddr + offset_aligned);
872 ada_printchar (c, type, stream);
879 /* Implement Ada val_print'ing for the case where TYPE is
883 ada_val_print_enum (struct type *type, const gdb_byte *valaddr,
884 int offset, int offset_aligned, CORE_ADDR address,
885 struct ui_file *stream, int recurse,
886 struct value *original_value,
887 const struct value_print_options *options,
888 const struct language_defn *language)
896 val_print_scalar_formatted (type, offset_aligned,
897 original_value, options, 0, stream);
901 len = TYPE_NFIELDS (type);
902 val = unpack_long (type, valaddr + offset_aligned);
903 for (i = 0; i < len; i++)
906 if (val == TYPE_FIELD_ENUMVAL (type, i))
912 const char *name = ada_enum_name (TYPE_FIELD_NAME (type, i));
915 fprintf_filtered (stream, "%ld %s", (long) val, name);
917 fputs_filtered (name, stream);
920 print_longest (stream, 'd', 0, val);
923 /* Implement Ada val_print'ing for the case where TYPE is
927 ada_val_print_flt (struct type *type, const gdb_byte *valaddr,
928 int offset, int offset_aligned, CORE_ADDR address,
929 struct ui_file *stream, int recurse,
930 struct value *original_value,
931 const struct value_print_options *options,
932 const struct language_defn *language)
936 val_print (type, offset, address, stream, recurse,
937 original_value, options, language_def (language_c));
941 ada_print_floating (valaddr + offset, type, stream);
944 /* Implement Ada val_print'ing for the case where TYPE is
945 a TYPE_CODE_STRUCT or TYPE_CODE_UNION. */
948 ada_val_print_struct_union
949 (struct type *type, const gdb_byte *valaddr, int offset,
950 int offset_aligned, CORE_ADDR address, struct ui_file *stream,
951 int recurse, struct value *original_value,
952 const struct value_print_options *options,
953 const struct language_defn *language)
955 if (ada_is_bogus_array_descriptor (type))
957 fprintf_filtered (stream, "(...?)");
961 fprintf_filtered (stream, "(");
963 if (print_field_values (type, valaddr, offset_aligned,
964 stream, recurse, original_value, options,
965 0, type, offset_aligned, language) != 0
966 && options->prettyformat)
968 fprintf_filtered (stream, "\n");
969 print_spaces_filtered (2 * recurse, stream);
972 fprintf_filtered (stream, ")");
975 /* Implement Ada val_print'ing for the case where TYPE is
976 a TYPE_CODE_ARRAY. */
979 ada_val_print_array (struct type *type, const gdb_byte *valaddr,
980 int offset, int offset_aligned, CORE_ADDR address,
981 struct ui_file *stream, int recurse,
982 struct value *original_value,
983 const struct value_print_options *options)
985 /* For an array of characters, print with string syntax. */
986 if (ada_is_string_type (type)
987 && (options->format == 0 || options->format == 's'))
989 ada_val_print_string (type, valaddr, offset, offset_aligned,
990 address, stream, recurse, original_value,
995 fprintf_filtered (stream, "(");
996 print_optional_low_bound (stream, type, options);
997 if (TYPE_FIELD_BITSIZE (type, 0) > 0)
998 val_print_packed_array_elements (type, valaddr, offset_aligned,
1000 original_value, options);
1002 val_print_array_elements (type, offset_aligned, address,
1003 stream, recurse, original_value,
1005 fprintf_filtered (stream, ")");
1008 /* Implement Ada val_print'ing for the case where TYPE is
1012 ada_val_print_ref (struct type *type, const gdb_byte *valaddr,
1013 int offset, int offset_aligned, CORE_ADDR address,
1014 struct ui_file *stream, int recurse,
1015 struct value *original_value,
1016 const struct value_print_options *options,
1017 const struct language_defn *language)
1019 /* For references, the debugger is expected to print the value as
1020 an address if DEREF_REF is null. But printing an address in place
1021 of the object value would be confusing to an Ada programmer.
1022 So, for Ada values, we print the actual dereferenced value
1024 struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));
1025 struct value *deref_val;
1026 CORE_ADDR deref_val_int;
1028 if (TYPE_CODE (elttype) == TYPE_CODE_UNDEF)
1030 fputs_filtered ("<ref to undefined type>", stream);
1034 deref_val = coerce_ref_if_computed (original_value);
1037 if (ada_is_tagged_type (value_type (deref_val), 1))
1038 deref_val = ada_tag_value_at_base_address (deref_val);
1040 common_val_print (deref_val, stream, recurse + 1, options,
1045 deref_val_int = unpack_pointer (type, valaddr + offset_aligned);
1046 if (deref_val_int == 0)
1048 fputs_filtered ("(null)", stream);
1053 = ada_value_ind (value_from_pointer (lookup_pointer_type (elttype),
1055 if (ada_is_tagged_type (value_type (deref_val), 1))
1056 deref_val = ada_tag_value_at_base_address (deref_val);
1058 /* Make sure that the object does not have an unreasonable size
1059 before trying to print it. This can happen for instance with
1060 references to dynamic objects whose contents is uninitialized
1061 (Eg: an array whose bounds are not set yet). */
1062 ada_ensure_varsize_limit (value_type (deref_val));
1064 val_print (value_type (deref_val),
1065 value_embedded_offset (deref_val),
1066 value_address (deref_val), stream, recurse + 1,
1067 deref_val, options, language);
1070 /* See the comment on ada_val_print. This function differs in that it
1071 does not catch evaluation errors (leaving that to ada_val_print). */
1074 ada_val_print_1 (struct type *type,
1075 int offset, CORE_ADDR address,
1076 struct ui_file *stream, int recurse,
1077 struct value *original_value,
1078 const struct value_print_options *options,
1079 const struct language_defn *language)
1082 const gdb_byte *valaddr = value_contents_for_printing (original_value);
1084 type = ada_check_typedef (type);
1086 if (ada_is_array_descriptor_type (type)
1087 || (ada_is_constrained_packed_array_type (type)
1088 && TYPE_CODE (type) != TYPE_CODE_PTR))
1090 ada_val_print_gnat_array (type, valaddr, offset, address,
1091 stream, recurse, original_value,
1096 offset_aligned = offset + ada_aligned_value_addr (type, valaddr) - valaddr;
1097 type = printable_val_type (type, valaddr + offset_aligned);
1098 type = resolve_dynamic_type (type, valaddr + offset_aligned,
1099 address + offset_aligned);
1101 switch (TYPE_CODE (type))
1104 val_print (type, offset, address, stream, recurse,
1105 original_value, options, language_def (language_c));
1109 ada_val_print_ptr (type, valaddr, offset, offset_aligned,
1110 address, stream, recurse, original_value,
1115 case TYPE_CODE_RANGE:
1116 ada_val_print_num (type, valaddr, offset, offset_aligned,
1117 address, stream, recurse, original_value,
1121 case TYPE_CODE_ENUM:
1122 ada_val_print_enum (type, valaddr, offset, offset_aligned,
1123 address, stream, recurse, original_value,
1128 ada_val_print_flt (type, valaddr, offset, offset_aligned,
1129 address, stream, recurse, original_value,
1133 case TYPE_CODE_UNION:
1134 case TYPE_CODE_STRUCT:
1135 ada_val_print_struct_union (type, valaddr, offset, offset_aligned,
1136 address, stream, recurse,
1137 original_value, options, language);
1140 case TYPE_CODE_ARRAY:
1141 ada_val_print_array (type, valaddr, offset, offset_aligned,
1142 address, stream, recurse, original_value,
1147 ada_val_print_ref (type, valaddr, offset, offset_aligned,
1148 address, stream, recurse, original_value,
1154 /* See val_print for a description of the various parameters of this
1155 function; they are identical. */
1158 ada_val_print (struct type *type,
1159 int embedded_offset, CORE_ADDR address,
1160 struct ui_file *stream, int recurse,
1162 const struct value_print_options *options)
1165 /* XXX: this catches QUIT/ctrl-c as well. Isn't that busted? */
1168 ada_val_print_1 (type, embedded_offset, address,
1169 stream, recurse, val, options,
1172 CATCH (except, RETURN_MASK_ALL)
1179 ada_value_print (struct value *val0, struct ui_file *stream,
1180 const struct value_print_options *options)
1182 struct value *val = ada_to_fixed_value (val0);
1183 CORE_ADDR address = value_address (val);
1184 struct type *type = ada_check_typedef (value_enclosing_type (val));
1185 struct value_print_options opts;
1187 /* If it is a pointer, indicate what it points to. */
1188 if (TYPE_CODE (type) == TYPE_CODE_PTR)
1190 /* Hack: don't print (char *) for char strings. Their
1191 type is indicated by the quoted string anyway. */
1192 if (TYPE_LENGTH (TYPE_TARGET_TYPE (type)) != sizeof (char)
1193 || TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_INT
1194 || TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)))
1196 fprintf_filtered (stream, "(");
1197 type_print (type, "", stream, -1);
1198 fprintf_filtered (stream, ") ");
1201 else if (ada_is_array_descriptor_type (type))
1203 /* We do not print the type description unless TYPE is an array
1204 access type (this is encoded by the compiler as a typedef to
1205 a fat pointer - hence the check against TYPE_CODE_TYPEDEF). */
1206 if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
1208 fprintf_filtered (stream, "(");
1209 type_print (type, "", stream, -1);
1210 fprintf_filtered (stream, ") ");
1213 else if (ada_is_bogus_array_descriptor (type))
1215 fprintf_filtered (stream, "(");
1216 type_print (type, "", stream, -1);
1217 fprintf_filtered (stream, ") (...?)");
1224 value_embedded_offset (val), address,
1225 stream, 0, val, &opts, current_language);