1 /* Support for printing Ada values for GDB, the GNU debugger.
3 Copyright (C) 1986-2019 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"
34 #include "target-float.h"
36 static int print_field_values (struct type *, const gdb_byte *,
38 struct ui_file *, int,
40 const struct value_print_options *,
41 int, struct type *, int,
42 const struct language_defn *);
45 /* Make TYPE unsigned if its range of values includes no negatives. */
47 adjust_type_signedness (struct type *type)
49 if (type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE
50 && TYPE_LOW_BOUND (type) >= 0)
51 TYPE_UNSIGNED (type) = 1;
54 /* Assuming TYPE is a simple array type, prints its lower bound on STREAM,
55 if non-standard (i.e., other than 1 for numbers, other than lower bound
56 of index type for enumerated type). Returns 1 if something printed,
60 print_optional_low_bound (struct ui_file *stream, struct type *type,
61 const struct value_print_options *options)
63 struct type *index_type;
67 if (options->print_array_indexes)
70 if (!get_array_bounds (type, &low_bound, &high_bound))
73 /* If this is an empty array, then don't print the lower bound.
74 That would be confusing, because we would print the lower bound,
75 followed by... nothing! */
76 if (low_bound > high_bound)
79 index_type = TYPE_INDEX_TYPE (type);
81 while (TYPE_CODE (index_type) == TYPE_CODE_RANGE)
83 /* We need to know what the base type is, in order to do the
84 appropriate check below. Otherwise, if this is a subrange
85 of an enumerated type, where the underlying value of the
86 first element is typically 0, we might test the low bound
87 against the wrong value. */
88 index_type = TYPE_TARGET_TYPE (index_type);
91 /* Don't print the lower bound if it's the default one. */
92 switch (TYPE_CODE (index_type))
100 if (low_bound == TYPE_FIELD_ENUMVAL (index_type, 0))
103 case TYPE_CODE_UNDEF:
112 ada_print_scalar (index_type, low_bound, stream);
113 fprintf_filtered (stream, " => ");
117 /* Version of val_print_array_elements for GNAT-style packed arrays.
118 Prints elements of packed array of type TYPE at bit offset
119 BITOFFSET from VALADDR on STREAM. Formats according to OPTIONS and
120 separates with commas. RECURSE is the recursion (nesting) level.
121 TYPE must have been decoded (as by ada_coerce_to_simple_array). */
124 val_print_packed_array_elements (struct type *type, const gdb_byte *valaddr,
126 int bitoffset, struct ui_file *stream,
129 const struct value_print_options *options)
132 unsigned int things_printed = 0;
134 struct type *elttype, *index_type;
135 unsigned long bitsize = TYPE_FIELD_BITSIZE (type, 0);
136 struct value *mark = value_mark ();
139 elttype = TYPE_TARGET_TYPE (type);
140 index_type = TYPE_INDEX_TYPE (type);
144 struct type *base_index_type;
146 if (get_discrete_bounds (index_type, &low, &high) < 0)
149 len = high - low + 1;
151 if (TYPE_CODE (index_type) == TYPE_CODE_RANGE)
152 base_index_type = TYPE_TARGET_TYPE (index_type);
154 base_index_type = index_type;
156 if (TYPE_CODE (base_index_type) == TYPE_CODE_ENUM)
158 LONGEST low_pos, high_pos;
160 /* Non-contiguous enumerations types can by used as index types
161 so the array length is computed from the positions of the
162 first and last literal in the enumeration type, and not from
163 the values of these literals. */
165 if (!discrete_position (base_index_type, low, &low_pos)
166 || !discrete_position (base_index_type, high, &high_pos))
168 warning (_("unable to get positions in array, use bounds instead"));
173 /* The array length should normally be HIGH_POS - LOW_POS + 1.
174 But in Ada we allow LOW_POS to be greater than HIGH_POS for
175 empty arrays. In that situation, the array length is just zero,
178 if (low_pos > high_pos)
181 len = high_pos - low_pos + 1;
186 annotate_array_section_begin (i, elttype);
188 while (i < len && things_printed < options->print_max)
190 struct value *v0, *v1;
195 if (options->prettyformat_arrays)
197 fprintf_filtered (stream, ",\n");
198 print_spaces_filtered (2 + 2 * recurse, stream);
202 fprintf_filtered (stream, ", ");
205 wrap_here (n_spaces (2 + 2 * recurse));
206 maybe_print_array_index (index_type, i + low, stream, options);
209 v0 = ada_value_primitive_packed_val (NULL, valaddr + offset,
210 (i0 * bitsize) / HOST_CHAR_BIT,
211 (i0 * bitsize) % HOST_CHAR_BIT,
218 v1 = ada_value_primitive_packed_val (NULL, valaddr + offset,
219 (i * bitsize) / HOST_CHAR_BIT,
220 (i * bitsize) % HOST_CHAR_BIT,
222 if (TYPE_LENGTH (check_typedef (value_type (v0)))
223 != TYPE_LENGTH (check_typedef (value_type (v1))))
225 if (!value_contents_eq (v0, value_embedded_offset (v0),
226 v1, value_embedded_offset (v1),
227 TYPE_LENGTH (check_typedef (value_type (v0)))))
231 if (i - i0 > options->repeat_count_threshold)
233 struct value_print_options opts = *options;
237 value_embedded_offset (v0), 0, stream,
238 recurse + 1, v0, &opts, current_language);
239 annotate_elt_rep (i - i0);
240 fprintf_filtered (stream, _(" <repeats %u times>"), i - i0);
241 annotate_elt_rep_end ();
247 struct value_print_options opts = *options;
250 for (j = i0; j < i; j += 1)
254 if (options->prettyformat_arrays)
256 fprintf_filtered (stream, ",\n");
257 print_spaces_filtered (2 + 2 * recurse, stream);
261 fprintf_filtered (stream, ", ");
263 wrap_here (n_spaces (2 + 2 * recurse));
264 maybe_print_array_index (index_type, j + low,
268 value_embedded_offset (v0), 0, stream,
269 recurse + 1, v0, &opts, current_language);
273 things_printed += i - i0;
275 annotate_array_section_end ();
278 fprintf_filtered (stream, "...");
281 value_free_to_mark (mark);
285 printable_val_type (struct type *type, const gdb_byte *valaddr)
287 return ada_to_fixed_type (ada_aligned_type (type), valaddr, 0, NULL, 1);
290 /* Print the character C on STREAM as part of the contents of a literal
291 string whose delimiter is QUOTER. TYPE_LEN is the length in bytes
295 ada_emit_char (int c, struct type *type, struct ui_file *stream,
296 int quoter, int type_len)
298 /* If this character fits in the normal ASCII range, and is
299 a printable character, then print the character as if it was
300 an ASCII character, even if this is a wide character.
301 The UCHAR_MAX check is necessary because the isascii function
302 requires that its argument have a value of an unsigned char,
303 or EOF (EOF is obviously not printable). */
304 if (c <= UCHAR_MAX && isascii (c) && isprint (c))
306 if (c == quoter && c == '"')
307 fprintf_filtered (stream, "\"\"");
309 fprintf_filtered (stream, "%c", c);
312 fprintf_filtered (stream, "[\"%0*x\"]", type_len * 2, c);
315 /* Character #I of STRING, given that TYPE_LEN is the size in bytes
319 char_at (const gdb_byte *string, int i, int type_len,
320 enum bfd_endian byte_order)
325 return (int) extract_unsigned_integer (string + type_len * i,
326 type_len, byte_order);
329 /* Print a floating-point value of type TYPE, pointed to in GDB by
330 VALADDR, on STREAM. Use Ada formatting conventions: there must be
331 a decimal point, and at least one digit before and after the
332 point. We use the GNAT format for NaNs and infinities. */
335 ada_print_floating (const gdb_byte *valaddr, struct type *type,
336 struct ui_file *stream)
338 string_file tmp_stream;
340 print_floating (valaddr, type, &tmp_stream);
342 std::string &s = tmp_stream.string ();
343 size_t skip_count = 0;
345 /* Modify for Ada rules. */
347 size_t pos = s.find ("inf");
348 if (pos == std::string::npos)
349 pos = s.find ("Inf");
350 if (pos == std::string::npos)
351 pos = s.find ("INF");
352 if (pos != std::string::npos)
353 s.replace (pos, 3, "Inf");
355 if (pos == std::string::npos)
357 pos = s.find ("nan");
358 if (pos == std::string::npos)
359 pos = s.find ("NaN");
360 if (pos == std::string::npos)
361 pos = s.find ("Nan");
362 if (pos != std::string::npos)
364 s[pos] = s[pos + 2] = 'N';
370 if (pos == std::string::npos
371 && s.find ('.') == std::string::npos)
374 if (pos == std::string::npos)
375 fprintf_filtered (stream, "%s.0", s.c_str ());
377 fprintf_filtered (stream, "%.*s.0%s", (int) pos, s.c_str (), &s[pos]);
380 fprintf_filtered (stream, "%s", &s[skip_count]);
384 ada_printchar (int c, struct type *type, struct ui_file *stream)
386 fputs_filtered ("'", stream);
387 ada_emit_char (c, type, stream, '\'', TYPE_LENGTH (type));
388 fputs_filtered ("'", stream);
391 /* [From print_type_scalar in typeprint.c]. Print VAL on STREAM in a
392 form appropriate for TYPE, if non-NULL. If TYPE is NULL, print VAL
393 like a default signed integer. */
396 ada_print_scalar (struct type *type, LONGEST val, struct ui_file *stream)
403 print_longest (stream, 'd', 0, val);
407 type = ada_check_typedef (type);
409 switch (TYPE_CODE (type))
413 len = TYPE_NFIELDS (type);
414 for (i = 0; i < len; i++)
416 if (TYPE_FIELD_ENUMVAL (type, i) == val)
423 fputs_filtered (ada_enum_name (TYPE_FIELD_NAME (type, i)), stream);
427 print_longest (stream, 'd', 0, val);
432 print_longest (stream, TYPE_UNSIGNED (type) ? 'u' : 'd', 0, val);
436 LA_PRINT_CHAR (val, type, stream);
440 fprintf_filtered (stream, val ? "true" : "false");
443 case TYPE_CODE_RANGE:
444 ada_print_scalar (TYPE_TARGET_TYPE (type), val, stream);
447 case TYPE_CODE_UNDEF:
449 case TYPE_CODE_ARRAY:
450 case TYPE_CODE_STRUCT:
451 case TYPE_CODE_UNION:
456 case TYPE_CODE_STRING:
457 case TYPE_CODE_ERROR:
458 case TYPE_CODE_MEMBERPTR:
459 case TYPE_CODE_METHODPTR:
460 case TYPE_CODE_METHOD:
462 warning (_("internal error: unhandled type in ada_print_scalar"));
466 error (_("Invalid type code in symbol table."));
471 /* Print the character string STRING, printing at most LENGTH characters.
472 Printing stops early if the number hits print_max; repeat counts
473 are printed as appropriate. Print ellipses at the end if we
474 had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
475 TYPE_LEN is the length (1 or 2) of the character type. */
478 printstr (struct ui_file *stream, struct type *elttype, const gdb_byte *string,
479 unsigned int length, int force_ellipses, int type_len,
480 const struct value_print_options *options)
482 enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (elttype));
484 unsigned int things_printed = 0;
490 fputs_filtered ("\"\"", stream);
494 for (i = 0; i < length && things_printed < options->print_max; i += 1)
496 /* Position of the character we are examining
497 to see whether it is repeated. */
499 /* Number of repetitions we have detected so far. */
506 fputs_filtered (", ", stream);
513 && char_at (string, rep1, type_len, byte_order)
514 == char_at (string, i, type_len, byte_order))
520 if (reps > options->repeat_count_threshold)
524 fputs_filtered ("\", ", stream);
527 fputs_filtered ("'", stream);
528 ada_emit_char (char_at (string, i, type_len, byte_order),
529 elttype, stream, '\'', type_len);
530 fputs_filtered ("'", stream);
531 fprintf_filtered (stream, _(" <repeats %u times>"), reps);
533 things_printed += options->repeat_count_threshold;
540 fputs_filtered ("\"", stream);
543 ada_emit_char (char_at (string, i, type_len, byte_order),
544 elttype, stream, '"', type_len);
549 /* Terminate the quotes if necessary. */
551 fputs_filtered ("\"", stream);
553 if (force_ellipses || i < length)
554 fputs_filtered ("...", stream);
558 ada_printstr (struct ui_file *stream, struct type *type,
559 const gdb_byte *string, unsigned int length,
560 const char *encoding, int force_ellipses,
561 const struct value_print_options *options)
563 printstr (stream, type, string, length, force_ellipses, TYPE_LENGTH (type),
568 print_variant_part (struct type *type, int field_num,
569 const gdb_byte *valaddr, int offset,
570 struct ui_file *stream, int recurse,
572 const struct value_print_options *options,
574 struct type *outer_type, int outer_offset,
575 const struct language_defn *language)
577 struct type *var_type = TYPE_FIELD_TYPE (type, field_num);
578 int which = ada_which_variant_applies (var_type, outer_type,
579 valaddr + outer_offset);
584 return print_field_values
585 (TYPE_FIELD_TYPE (var_type, which),
587 offset + TYPE_FIELD_BITPOS (type, field_num) / HOST_CHAR_BIT
588 + TYPE_FIELD_BITPOS (var_type, which) / HOST_CHAR_BIT,
589 stream, recurse, val, options,
590 comma_needed, outer_type, outer_offset, language);
593 /* Print out fields of value at VALADDR + OFFSET having structure type TYPE.
595 TYPE, VALADDR, OFFSET, STREAM, RECURSE, and OPTIONS have the same
596 meanings as in ada_print_value and ada_val_print.
598 OUTER_TYPE and OUTER_OFFSET give type and address of enclosing
599 record (used to get discriminant values when printing variant
602 COMMA_NEEDED is 1 if fields have been printed at the current recursion
603 level, so that a comma is needed before any field printed by this
606 Returns 1 if COMMA_NEEDED or any fields were printed. */
609 print_field_values (struct type *type, const gdb_byte *valaddr,
610 int offset, struct ui_file *stream, int recurse,
612 const struct value_print_options *options,
614 struct type *outer_type, int outer_offset,
615 const struct language_defn *language)
619 len = TYPE_NFIELDS (type);
621 for (i = 0; i < len; i += 1)
623 if (ada_is_ignored_field (type, i))
626 if (ada_is_wrapper_field (type, i))
629 print_field_values (TYPE_FIELD_TYPE (type, i),
632 + TYPE_FIELD_BITPOS (type, i) / HOST_CHAR_BIT),
633 stream, recurse, val, options,
634 comma_needed, type, offset, language);
637 else if (ada_is_variant_part (type, i))
640 print_variant_part (type, i, valaddr,
641 offset, stream, recurse, val,
642 options, comma_needed,
643 outer_type, outer_offset, language);
648 fprintf_filtered (stream, ", ");
651 if (options->prettyformat)
653 fprintf_filtered (stream, "\n");
654 print_spaces_filtered (2 + 2 * recurse, stream);
658 wrap_here (n_spaces (2 + 2 * recurse));
661 annotate_field_begin (TYPE_FIELD_TYPE (type, i));
662 fprintf_filtered (stream, "%.*s",
663 ada_name_prefix_len (TYPE_FIELD_NAME (type, i)),
664 TYPE_FIELD_NAME (type, i));
665 annotate_field_name_end ();
666 fputs_filtered (" => ", stream);
667 annotate_field_value ();
669 if (TYPE_FIELD_PACKED (type, i))
671 /* Bitfields require special handling, especially due to byte
673 if (HAVE_CPLUS_STRUCT (type) && TYPE_FIELD_IGNORE (type, i))
675 fputs_filtered (_("<optimized out or zero length>"), stream);
680 int bit_pos = TYPE_FIELD_BITPOS (type, i);
681 int bit_size = TYPE_FIELD_BITSIZE (type, i);
682 struct value_print_options opts;
684 adjust_type_signedness (TYPE_FIELD_TYPE (type, i));
685 v = ada_value_primitive_packed_val
687 offset + bit_pos / HOST_CHAR_BIT,
688 bit_pos % HOST_CHAR_BIT,
689 bit_size, TYPE_FIELD_TYPE (type, i));
692 val_print (TYPE_FIELD_TYPE (type, i),
693 value_embedded_offset (v), 0,
694 stream, recurse + 1, v,
700 struct value_print_options opts = *options;
703 val_print (TYPE_FIELD_TYPE (type, i),
704 (offset + TYPE_FIELD_BITPOS (type, i) / HOST_CHAR_BIT),
705 0, stream, recurse + 1, val, &opts, language);
707 annotate_field_end ();
713 /* Implement Ada val_print'ing for the case where TYPE is
714 a TYPE_CODE_ARRAY of characters. */
717 ada_val_print_string (struct type *type, const gdb_byte *valaddr,
718 int offset, int offset_aligned, CORE_ADDR address,
719 struct ui_file *stream, int recurse,
720 struct value *original_value,
721 const struct value_print_options *options)
723 enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
724 struct type *elttype = TYPE_TARGET_TYPE (type);
728 /* We know that ELTTYPE cannot possibly be null, because we assume
729 that we're called only when TYPE is a string-like type.
730 Similarly, the size of ELTTYPE should also be non-null, since
731 it's a character-like type. */
732 gdb_assert (elttype != NULL);
733 gdb_assert (TYPE_LENGTH (elttype) != 0);
735 eltlen = TYPE_LENGTH (elttype);
736 len = TYPE_LENGTH (type) / eltlen;
738 if (options->prettyformat_arrays)
739 print_spaces_filtered (2 + 2 * recurse, stream);
741 /* If requested, look for the first null char and only print
742 elements up to it. */
743 if (options->stop_print_at_null)
747 /* Look for a NULL char. */
750 && temp_len < options->print_max
751 && char_at (valaddr + offset_aligned,
752 temp_len, eltlen, byte_order) != 0);
757 printstr (stream, elttype, valaddr + offset_aligned, len, 0,
761 /* Implement Ada val_print-ing for GNAT arrays (Eg. fat pointers,
762 thin pointers, etc). */
765 ada_val_print_gnat_array (struct type *type, const gdb_byte *valaddr,
766 int offset, CORE_ADDR address,
767 struct ui_file *stream, int recurse,
768 struct value *original_value,
769 const struct value_print_options *options,
770 const struct language_defn *language)
772 struct value *mark = value_mark ();
775 val = value_from_contents_and_address (type, valaddr + offset, address);
776 /* If this is a reference, coerce it now. This helps taking care
777 of the case where ADDRESS is meaningless because original_value
779 val = coerce_ref (val);
780 if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) /* array access type. */
781 val = ada_coerce_to_simple_array_ptr (val);
783 val = ada_coerce_to_simple_array (val);
786 gdb_assert (TYPE_CODE (type) == TYPE_CODE_TYPEDEF);
787 fprintf_filtered (stream, "0x0");
790 val_print (value_type (val),
791 value_embedded_offset (val), value_address (val),
792 stream, recurse, val, options, language);
793 value_free_to_mark (mark);
796 /* Implement Ada val_print'ing for the case where TYPE is
800 ada_val_print_ptr (struct type *type, const gdb_byte *valaddr,
801 int offset, int offset_aligned, CORE_ADDR address,
802 struct ui_file *stream, int recurse,
803 struct value *original_value,
804 const struct value_print_options *options,
805 const struct language_defn *language)
807 val_print (type, offset, address, stream, recurse,
808 original_value, options, language_def (language_c));
810 if (ada_is_tag_type (type))
813 value_from_contents_and_address (type,
814 valaddr + offset_aligned,
815 address + offset_aligned);
816 const char *name = ada_tag_name (val);
819 fprintf_filtered (stream, " (%s)", name);
823 /* Implement Ada val_print'ing for the case where TYPE is
824 a TYPE_CODE_INT or TYPE_CODE_RANGE. */
827 ada_val_print_num (struct type *type, const gdb_byte *valaddr,
828 int offset, int offset_aligned, CORE_ADDR address,
829 struct ui_file *stream, int recurse,
830 struct value *original_value,
831 const struct value_print_options *options,
832 const struct language_defn *language)
834 if (ada_is_fixed_point_type (type))
836 struct value *scale = ada_scaling_factor (type);
837 struct value *v = value_from_contents (type, valaddr + offset_aligned);
838 v = value_cast (value_type (scale), v);
839 v = value_binop (v, scale, BINOP_MUL);
841 const char *fmt = TYPE_LENGTH (type) < 4 ? "%.11g" : "%.17g";
843 = target_float_to_string (value_contents (v), value_type (v), fmt);
844 fputs_filtered (str.c_str (), stream);
847 else if (TYPE_CODE (type) == TYPE_CODE_RANGE)
849 struct type *target_type = TYPE_TARGET_TYPE (type);
851 if (TYPE_LENGTH (type) != TYPE_LENGTH (target_type))
853 /* Obscure case of range type that has different length from
854 its base type. Perform a conversion, or we will get a
855 nonsense value. Actually, we could use the same
856 code regardless of lengths; I'm just avoiding a cast. */
858 = value_from_contents_and_address (type, valaddr + offset, 0);
859 struct value *v = value_cast (target_type, v1);
861 val_print (target_type,
862 value_embedded_offset (v), 0, stream,
863 recurse + 1, v, options, language);
866 val_print (TYPE_TARGET_TYPE (type), offset,
867 address, stream, recurse, original_value,
873 int format = (options->format ? options->format
874 : options->output_format);
878 struct value_print_options opts = *options;
880 opts.format = format;
881 val_print_scalar_formatted (type, offset_aligned,
882 original_value, &opts, 0, stream);
884 else if (ada_is_system_address_type (type))
886 /* FIXME: We want to print System.Address variables using
887 the same format as for any access type. But for some
888 reason GNAT encodes the System.Address type as an int,
889 so we have to work-around this deficiency by handling
890 System.Address values as a special case. */
892 struct gdbarch *gdbarch = get_type_arch (type);
893 struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr;
894 CORE_ADDR addr = extract_typed_address (valaddr + offset_aligned,
897 fprintf_filtered (stream, "(");
898 type_print (type, "", stream, -1);
899 fprintf_filtered (stream, ") ");
900 fputs_filtered (paddress (gdbarch, addr), stream);
904 val_print_scalar_formatted (type, offset_aligned,
905 original_value, options, 0, stream);
906 if (ada_is_character_type (type))
910 fputs_filtered (" ", stream);
911 c = unpack_long (type, valaddr + offset_aligned);
912 ada_printchar (c, type, stream);
919 /* Implement Ada val_print'ing for the case where TYPE is
923 ada_val_print_enum (struct type *type, const gdb_byte *valaddr,
924 int offset, int offset_aligned, CORE_ADDR address,
925 struct ui_file *stream, int recurse,
926 struct value *original_value,
927 const struct value_print_options *options,
928 const struct language_defn *language)
936 val_print_scalar_formatted (type, offset_aligned,
937 original_value, options, 0, stream);
941 len = TYPE_NFIELDS (type);
942 val = unpack_long (type, valaddr + offset_aligned);
943 for (i = 0; i < len; i++)
946 if (val == TYPE_FIELD_ENUMVAL (type, i))
952 const char *name = ada_enum_name (TYPE_FIELD_NAME (type, i));
955 fprintf_filtered (stream, "%ld %s", (long) val, name);
957 fputs_filtered (name, stream);
960 print_longest (stream, 'd', 0, val);
963 /* Implement Ada val_print'ing for the case where TYPE is
967 ada_val_print_flt (struct type *type, const gdb_byte *valaddr,
968 int offset, int offset_aligned, CORE_ADDR address,
969 struct ui_file *stream, int recurse,
970 struct value *original_value,
971 const struct value_print_options *options,
972 const struct language_defn *language)
976 val_print (type, offset, address, stream, recurse,
977 original_value, options, language_def (language_c));
981 ada_print_floating (valaddr + offset, type, stream);
984 /* Implement Ada val_print'ing for the case where TYPE is
985 a TYPE_CODE_STRUCT or TYPE_CODE_UNION. */
988 ada_val_print_struct_union
989 (struct type *type, const gdb_byte *valaddr, int offset,
990 int offset_aligned, CORE_ADDR address, struct ui_file *stream,
991 int recurse, struct value *original_value,
992 const struct value_print_options *options,
993 const struct language_defn *language)
995 if (ada_is_bogus_array_descriptor (type))
997 fprintf_filtered (stream, "(...?)");
1001 fprintf_filtered (stream, "(");
1003 if (print_field_values (type, valaddr, offset_aligned,
1004 stream, recurse, original_value, options,
1005 0, type, offset_aligned, language) != 0
1006 && options->prettyformat)
1008 fprintf_filtered (stream, "\n");
1009 print_spaces_filtered (2 * recurse, stream);
1012 fprintf_filtered (stream, ")");
1015 /* Implement Ada val_print'ing for the case where TYPE is
1016 a TYPE_CODE_ARRAY. */
1019 ada_val_print_array (struct type *type, const gdb_byte *valaddr,
1020 int offset, int offset_aligned, CORE_ADDR address,
1021 struct ui_file *stream, int recurse,
1022 struct value *original_value,
1023 const struct value_print_options *options)
1025 /* For an array of characters, print with string syntax. */
1026 if (ada_is_string_type (type)
1027 && (options->format == 0 || options->format == 's'))
1029 ada_val_print_string (type, valaddr, offset, offset_aligned,
1030 address, stream, recurse, original_value,
1035 fprintf_filtered (stream, "(");
1036 print_optional_low_bound (stream, type, options);
1037 if (TYPE_FIELD_BITSIZE (type, 0) > 0)
1038 val_print_packed_array_elements (type, valaddr, offset_aligned,
1040 original_value, options);
1042 val_print_array_elements (type, offset_aligned, address,
1043 stream, recurse, original_value,
1045 fprintf_filtered (stream, ")");
1048 /* Implement Ada val_print'ing for the case where TYPE is
1052 ada_val_print_ref (struct type *type, const gdb_byte *valaddr,
1053 int offset, int offset_aligned, CORE_ADDR address,
1054 struct ui_file *stream, int recurse,
1055 struct value *original_value,
1056 const struct value_print_options *options,
1057 const struct language_defn *language)
1059 /* For references, the debugger is expected to print the value as
1060 an address if DEREF_REF is null. But printing an address in place
1061 of the object value would be confusing to an Ada programmer.
1062 So, for Ada values, we print the actual dereferenced value
1064 struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));
1065 struct value *deref_val;
1066 CORE_ADDR deref_val_int;
1068 if (TYPE_CODE (elttype) == TYPE_CODE_UNDEF)
1070 fputs_filtered ("<ref to undefined type>", stream);
1074 deref_val = coerce_ref_if_computed (original_value);
1077 if (ada_is_tagged_type (value_type (deref_val), 1))
1078 deref_val = ada_tag_value_at_base_address (deref_val);
1080 common_val_print (deref_val, stream, recurse + 1, options,
1085 deref_val_int = unpack_pointer (type, valaddr + offset_aligned);
1086 if (deref_val_int == 0)
1088 fputs_filtered ("(null)", stream);
1093 = ada_value_ind (value_from_pointer (lookup_pointer_type (elttype),
1095 if (ada_is_tagged_type (value_type (deref_val), 1))
1096 deref_val = ada_tag_value_at_base_address (deref_val);
1098 /* Make sure that the object does not have an unreasonable size
1099 before trying to print it. This can happen for instance with
1100 references to dynamic objects whose contents is uninitialized
1101 (Eg: an array whose bounds are not set yet). */
1102 ada_ensure_varsize_limit (value_type (deref_val));
1104 if (value_lazy (deref_val))
1105 value_fetch_lazy (deref_val);
1107 val_print (value_type (deref_val),
1108 value_embedded_offset (deref_val),
1109 value_address (deref_val), stream, recurse + 1,
1110 deref_val, options, language);
1113 /* See the comment on ada_val_print. This function differs in that it
1114 does not catch evaluation errors (leaving that to ada_val_print). */
1117 ada_val_print_1 (struct type *type,
1118 int offset, CORE_ADDR address,
1119 struct ui_file *stream, int recurse,
1120 struct value *original_value,
1121 const struct value_print_options *options,
1122 const struct language_defn *language)
1125 const gdb_byte *valaddr = value_contents_for_printing (original_value);
1127 type = ada_check_typedef (type);
1129 if (ada_is_array_descriptor_type (type)
1130 || (ada_is_constrained_packed_array_type (type)
1131 && TYPE_CODE (type) != TYPE_CODE_PTR))
1133 ada_val_print_gnat_array (type, valaddr, offset, address,
1134 stream, recurse, original_value,
1139 offset_aligned = offset + ada_aligned_value_addr (type, valaddr) - valaddr;
1140 type = printable_val_type (type, valaddr + offset_aligned);
1141 type = resolve_dynamic_type (type, valaddr + offset_aligned,
1142 address + offset_aligned);
1144 switch (TYPE_CODE (type))
1147 val_print (type, offset, address, stream, recurse,
1148 original_value, options, language_def (language_c));
1152 ada_val_print_ptr (type, valaddr, offset, offset_aligned,
1153 address, stream, recurse, original_value,
1158 case TYPE_CODE_RANGE:
1159 ada_val_print_num (type, valaddr, offset, offset_aligned,
1160 address, stream, recurse, original_value,
1164 case TYPE_CODE_ENUM:
1165 ada_val_print_enum (type, valaddr, offset, offset_aligned,
1166 address, stream, recurse, original_value,
1171 ada_val_print_flt (type, valaddr, offset, offset_aligned,
1172 address, stream, recurse, original_value,
1176 case TYPE_CODE_UNION:
1177 case TYPE_CODE_STRUCT:
1178 ada_val_print_struct_union (type, valaddr, offset, offset_aligned,
1179 address, stream, recurse,
1180 original_value, options, language);
1183 case TYPE_CODE_ARRAY:
1184 ada_val_print_array (type, valaddr, offset, offset_aligned,
1185 address, stream, recurse, original_value,
1190 ada_val_print_ref (type, valaddr, offset, offset_aligned,
1191 address, stream, recurse, original_value,
1197 /* See val_print for a description of the various parameters of this
1198 function; they are identical. */
1201 ada_val_print (struct type *type,
1202 int embedded_offset, CORE_ADDR address,
1203 struct ui_file *stream, int recurse,
1205 const struct value_print_options *options)
1209 ada_val_print_1 (type, embedded_offset, address,
1210 stream, recurse, val, options,
1213 CATCH (except, RETURN_MASK_ERROR)
1215 fprintf_filtered (stream, _("<error reading variable: %s>"),
1222 ada_value_print (struct value *val0, struct ui_file *stream,
1223 const struct value_print_options *options)
1225 struct value *val = ada_to_fixed_value (val0);
1226 CORE_ADDR address = value_address (val);
1227 struct type *type = ada_check_typedef (value_type (val));
1228 struct value_print_options opts;
1230 /* If it is a pointer, indicate what it points to. */
1231 if (TYPE_CODE (type) == TYPE_CODE_PTR)
1233 /* Hack: don't print (char *) for char strings. Their
1234 type is indicated by the quoted string anyway. */
1235 if (TYPE_LENGTH (TYPE_TARGET_TYPE (type)) != sizeof (char)
1236 || TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_INT
1237 || TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)))
1239 fprintf_filtered (stream, "(");
1240 type_print (type, "", stream, -1);
1241 fprintf_filtered (stream, ") ");
1244 else if (ada_is_array_descriptor_type (type))
1246 /* We do not print the type description unless TYPE is an array
1247 access type (this is encoded by the compiler as a typedef to
1248 a fat pointer - hence the check against TYPE_CODE_TYPEDEF). */
1249 if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
1251 fprintf_filtered (stream, "(");
1252 type_print (type, "", stream, -1);
1253 fprintf_filtered (stream, ") ");
1256 else if (ada_is_bogus_array_descriptor (type))
1258 fprintf_filtered (stream, "(");
1259 type_print (type, "", stream, -1);
1260 fprintf_filtered (stream, ") (...?)");
1267 value_embedded_offset (val), address,
1268 stream, 0, val, &opts, current_language);