| /* Support for printing Ada values for GDB, the GNU debugger. |
| |
| Copyright (C) 1986-2015 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #include "defs.h" |
| #include <ctype.h> |
| #include "symtab.h" |
| #include "gdbtypes.h" |
| #include "expression.h" |
| #include "value.h" |
| #include "demangle.h" |
| #include "valprint.h" |
| #include "language.h" |
| #include "annotate.h" |
| #include "ada-lang.h" |
| #include "c-lang.h" |
| #include "infcall.h" |
| #include "objfiles.h" |
| |
| static int print_field_values (struct type *, const gdb_byte *, |
| int, |
| struct ui_file *, int, |
| const struct value *, |
| const struct value_print_options *, |
| int, struct type *, int, |
| const struct language_defn *); |
| |
| |
| /* Make TYPE unsigned if its range of values includes no negatives. */ |
| static void |
| adjust_type_signedness (struct type *type) |
| { |
| if (type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE |
| && TYPE_LOW_BOUND (type) >= 0) |
| TYPE_UNSIGNED (type) = 1; |
| } |
| |
| /* Assuming TYPE is a simple array type, prints its lower bound on STREAM, |
| if non-standard (i.e., other than 1 for numbers, other than lower bound |
| of index type for enumerated type). Returns 1 if something printed, |
| otherwise 0. */ |
| |
| static int |
| print_optional_low_bound (struct ui_file *stream, struct type *type, |
| const struct value_print_options *options) |
| { |
| struct type *index_type; |
| LONGEST low_bound; |
| LONGEST high_bound; |
| |
| if (options->print_array_indexes) |
| return 0; |
| |
| if (!get_array_bounds (type, &low_bound, &high_bound)) |
| return 0; |
| |
| /* If this is an empty array, then don't print the lower bound. |
| That would be confusing, because we would print the lower bound, |
| followed by... nothing! */ |
| if (low_bound > high_bound) |
| return 0; |
| |
| index_type = TYPE_INDEX_TYPE (type); |
| |
| while (TYPE_CODE (index_type) == TYPE_CODE_RANGE) |
| { |
| /* We need to know what the base type is, in order to do the |
| appropriate check below. Otherwise, if this is a subrange |
| of an enumerated type, where the underlying value of the |
| first element is typically 0, we might test the low bound |
| against the wrong value. */ |
| index_type = TYPE_TARGET_TYPE (index_type); |
| } |
| |
| switch (TYPE_CODE (index_type)) |
| { |
| case TYPE_CODE_BOOL: |
| if (low_bound == 0) |
| return 0; |
| break; |
| case TYPE_CODE_ENUM: |
| if (low_bound == TYPE_FIELD_ENUMVAL (index_type, 0)) |
| return 0; |
| break; |
| case TYPE_CODE_UNDEF: |
| index_type = NULL; |
| /* FALL THROUGH */ |
| default: |
| if (low_bound == 1) |
| return 0; |
| break; |
| } |
| |
| ada_print_scalar (index_type, low_bound, stream); |
| fprintf_filtered (stream, " => "); |
| return 1; |
| } |
| |
| /* Version of val_print_array_elements for GNAT-style packed arrays. |
| Prints elements of packed array of type TYPE at bit offset |
| BITOFFSET from VALADDR on STREAM. Formats according to OPTIONS and |
| separates with commas. RECURSE is the recursion (nesting) level. |
| TYPE must have been decoded (as by ada_coerce_to_simple_array). */ |
| |
| static void |
| val_print_packed_array_elements (struct type *type, const gdb_byte *valaddr, |
| int offset, |
| int bitoffset, struct ui_file *stream, |
| int recurse, |
| const struct value *val, |
| const struct value_print_options *options) |
| { |
| unsigned int i; |
| unsigned int things_printed = 0; |
| unsigned len; |
| struct type *elttype, *index_type; |
| unsigned long bitsize = TYPE_FIELD_BITSIZE (type, 0); |
| struct value *mark = value_mark (); |
| LONGEST low = 0; |
| |
| elttype = TYPE_TARGET_TYPE (type); |
| index_type = TYPE_INDEX_TYPE (type); |
| |
| { |
| LONGEST high; |
| |
| if (get_discrete_bounds (index_type, &low, &high) < 0) |
| len = 1; |
| else |
| len = high - low + 1; |
| } |
| |
| i = 0; |
| annotate_array_section_begin (i, elttype); |
| |
| while (i < len && things_printed < options->print_max) |
| { |
| struct value *v0, *v1; |
| int i0; |
| |
| if (i != 0) |
| { |
| if (options->prettyformat_arrays) |
| { |
| fprintf_filtered (stream, ",\n"); |
| print_spaces_filtered (2 + 2 * recurse, stream); |
| } |
| else |
| { |
| fprintf_filtered (stream, ", "); |
| } |
| } |
| wrap_here (n_spaces (2 + 2 * recurse)); |
| maybe_print_array_index (index_type, i + low, stream, options); |
| |
| i0 = i; |
| v0 = ada_value_primitive_packed_val (NULL, valaddr + offset, |
| (i0 * bitsize) / HOST_CHAR_BIT, |
| (i0 * bitsize) % HOST_CHAR_BIT, |
| bitsize, elttype); |
| while (1) |
| { |
| i += 1; |
| if (i >= len) |
| break; |
| v1 = ada_value_primitive_packed_val (NULL, valaddr + offset, |
| (i * bitsize) / HOST_CHAR_BIT, |
| (i * bitsize) % HOST_CHAR_BIT, |
| bitsize, elttype); |
| if (TYPE_LENGTH (check_typedef (value_type (v0))) |
| != TYPE_LENGTH (check_typedef (value_type (v1)))) |
| break; |
| if (!value_contents_eq (v0, value_embedded_offset (v0), |
| v1, value_embedded_offset (v1), |
| TYPE_LENGTH (check_typedef (value_type (v0))))) |
| break; |
| } |
| |
| if (i - i0 > options->repeat_count_threshold) |
| { |
| struct value_print_options opts = *options; |
| |
| opts.deref_ref = 0; |
| val_print (elttype, value_contents_for_printing (v0), |
| value_embedded_offset (v0), 0, stream, |
| recurse + 1, v0, &opts, current_language); |
| annotate_elt_rep (i - i0); |
| fprintf_filtered (stream, _(" <repeats %u times>"), i - i0); |
| annotate_elt_rep_end (); |
| |
| } |
| else |
| { |
| int j; |
| struct value_print_options opts = *options; |
| |
| opts.deref_ref = 0; |
| for (j = i0; j < i; j += 1) |
| { |
| if (j > i0) |
| { |
| if (options->prettyformat_arrays) |
| { |
| fprintf_filtered (stream, ",\n"); |
| print_spaces_filtered (2 + 2 * recurse, stream); |
| } |
| else |
| { |
| fprintf_filtered (stream, ", "); |
| } |
| wrap_here (n_spaces (2 + 2 * recurse)); |
| maybe_print_array_index (index_type, j + low, |
| stream, options); |
| } |
| val_print (elttype, value_contents_for_printing (v0), |
| value_embedded_offset (v0), 0, stream, |
| recurse + 1, v0, &opts, current_language); |
| annotate_elt (); |
| } |
| } |
| things_printed += i - i0; |
| } |
| annotate_array_section_end (); |
| if (i < len) |
| { |
| fprintf_filtered (stream, "..."); |
| } |
| |
| value_free_to_mark (mark); |
| } |
| |
| static struct type * |
| printable_val_type (struct type *type, const gdb_byte *valaddr) |
| { |
| return ada_to_fixed_type (ada_aligned_type (type), valaddr, 0, NULL, 1); |
| } |
| |
| /* Print the character C on STREAM as part of the contents of a literal |
| string whose delimiter is QUOTER. TYPE_LEN is the length in bytes |
| of the character. */ |
| |
| void |
| ada_emit_char (int c, struct type *type, struct ui_file *stream, |
| int quoter, int type_len) |
| { |
| /* If this character fits in the normal ASCII range, and is |
| a printable character, then print the character as if it was |
| an ASCII character, even if this is a wide character. |
| The UCHAR_MAX check is necessary because the isascii function |
| requires that its argument have a value of an unsigned char, |
| or EOF (EOF is obviously not printable). */ |
| if (c <= UCHAR_MAX && isascii (c) && isprint (c)) |
| { |
| if (c == quoter && c == '"') |
| fprintf_filtered (stream, "\"\""); |
| else |
| fprintf_filtered (stream, "%c", c); |
| } |
| else |
| fprintf_filtered (stream, "[\"%0*x\"]", type_len * 2, c); |
| } |
| |
| /* Character #I of STRING, given that TYPE_LEN is the size in bytes |
| of a character. */ |
| |
| static int |
| char_at (const gdb_byte *string, int i, int type_len, |
| enum bfd_endian byte_order) |
| { |
| if (type_len == 1) |
| return string[i]; |
| else |
| return (int) extract_unsigned_integer (string + type_len * i, |
| type_len, byte_order); |
| } |
| |
| /* Print a floating-point value of type TYPE, pointed to in GDB by |
| VALADDR, on STREAM. Use Ada formatting conventions: there must be |
| a decimal point, and at least one digit before and after the |
| point. We use the GNAT format for NaNs and infinities. */ |
| |
| static void |
| ada_print_floating (const gdb_byte *valaddr, struct type *type, |
| struct ui_file *stream) |
| { |
| char *s, *result; |
| struct ui_file *tmp_stream = mem_fileopen (); |
| struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_stream); |
| |
| print_floating (valaddr, type, tmp_stream); |
| result = ui_file_xstrdup (tmp_stream, NULL); |
| make_cleanup (xfree, result); |
| |
| /* Modify for Ada rules. */ |
| |
| s = strstr (result, "inf"); |
| if (s == NULL) |
| s = strstr (result, "Inf"); |
| if (s == NULL) |
| s = strstr (result, "INF"); |
| if (s != NULL) |
| strcpy (s, "Inf"); |
| |
| if (s == NULL) |
| { |
| s = strstr (result, "nan"); |
| if (s == NULL) |
| s = strstr (result, "NaN"); |
| if (s == NULL) |
| s = strstr (result, "Nan"); |
| if (s != NULL) |
| { |
| s[0] = s[2] = 'N'; |
| if (result[0] == '-') |
| result += 1; |
| } |
| } |
| |
| if (s == NULL && strchr (result, '.') == NULL) |
| { |
| s = strchr (result, 'e'); |
| if (s == NULL) |
| fprintf_filtered (stream, "%s.0", result); |
| else |
| fprintf_filtered (stream, "%.*s.0%s", (int) (s-result), result, s); |
| } |
| else |
| fprintf_filtered (stream, "%s", result); |
| |
| do_cleanups (cleanups); |
| } |
| |
| void |
| ada_printchar (int c, struct type *type, struct ui_file *stream) |
| { |
| fputs_filtered ("'", stream); |
| ada_emit_char (c, type, stream, '\'', TYPE_LENGTH (type)); |
| fputs_filtered ("'", stream); |
| } |
| |
| /* [From print_type_scalar in typeprint.c]. Print VAL on STREAM in a |
| form appropriate for TYPE, if non-NULL. If TYPE is NULL, print VAL |
| like a default signed integer. */ |
| |
| void |
| ada_print_scalar (struct type *type, LONGEST val, struct ui_file *stream) |
| { |
| unsigned int i; |
| unsigned len; |
| |
| if (!type) |
| { |
| print_longest (stream, 'd', 0, val); |
| return; |
| } |
| |
| type = ada_check_typedef (type); |
| |
| switch (TYPE_CODE (type)) |
| { |
| |
| case TYPE_CODE_ENUM: |
| len = TYPE_NFIELDS (type); |
| for (i = 0; i < len; i++) |
| { |
| if (TYPE_FIELD_ENUMVAL (type, i) == val) |
| { |
| break; |
| } |
| } |
| if (i < len) |
| { |
| fputs_filtered (ada_enum_name (TYPE_FIELD_NAME (type, i)), stream); |
| } |
| else |
| { |
| print_longest (stream, 'd', 0, val); |
| } |
| break; |
| |
| case TYPE_CODE_INT: |
| print_longest (stream, TYPE_UNSIGNED (type) ? 'u' : 'd', 0, val); |
| break; |
| |
| case TYPE_CODE_CHAR: |
| LA_PRINT_CHAR (val, type, stream); |
| break; |
| |
| case TYPE_CODE_BOOL: |
| fprintf_filtered (stream, val ? "true" : "false"); |
| break; |
| |
| case TYPE_CODE_RANGE: |
| ada_print_scalar (TYPE_TARGET_TYPE (type), val, stream); |
| return; |
| |
| case TYPE_CODE_UNDEF: |
| case TYPE_CODE_PTR: |
| case TYPE_CODE_ARRAY: |
| case TYPE_CODE_STRUCT: |
| case TYPE_CODE_UNION: |
| case TYPE_CODE_FUNC: |
| case TYPE_CODE_FLT: |
| case TYPE_CODE_VOID: |
| case TYPE_CODE_SET: |
| case TYPE_CODE_STRING: |
| case TYPE_CODE_ERROR: |
| case TYPE_CODE_MEMBERPTR: |
| case TYPE_CODE_METHODPTR: |
| case TYPE_CODE_METHOD: |
| case TYPE_CODE_REF: |
| warning (_("internal error: unhandled type in ada_print_scalar")); |
| break; |
| |
| default: |
| error (_("Invalid type code in symbol table.")); |
| } |
| gdb_flush (stream); |
| } |
| |
| /* Print the character string STRING, printing at most LENGTH characters. |
| Printing stops early if the number hits print_max; repeat counts |
| are printed as appropriate. Print ellipses at the end if we |
| had to stop before printing LENGTH characters, or if FORCE_ELLIPSES. |
| TYPE_LEN is the length (1 or 2) of the character type. */ |
| |
| static void |
| printstr (struct ui_file *stream, struct type *elttype, const gdb_byte *string, |
| unsigned int length, int force_ellipses, int type_len, |
| const struct value_print_options *options) |
| { |
| enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (elttype)); |
| unsigned int i; |
| unsigned int things_printed = 0; |
| int in_quotes = 0; |
| int need_comma = 0; |
| |
| if (length == 0) |
| { |
| fputs_filtered ("\"\"", stream); |
| return; |
| } |
| |
| for (i = 0; i < length && things_printed < options->print_max; i += 1) |
| { |
| /* Position of the character we are examining |
| to see whether it is repeated. */ |
| unsigned int rep1; |
| /* Number of repetitions we have detected so far. */ |
| unsigned int reps; |
| |
| QUIT; |
| |
| if (need_comma) |
| { |
| fputs_filtered (", ", stream); |
| need_comma = 0; |
| } |
| |
| rep1 = i + 1; |
| reps = 1; |
| while (rep1 < length |
| && char_at (string, rep1, type_len, byte_order) |
| == char_at (string, i, type_len, byte_order)) |
| { |
| rep1 += 1; |
| reps += 1; |
| } |
| |
| if (reps > options->repeat_count_threshold) |
| { |
| if (in_quotes) |
| { |
| fputs_filtered ("\", ", stream); |
| in_quotes = 0; |
| } |
| fputs_filtered ("'", stream); |
| ada_emit_char (char_at (string, i, type_len, byte_order), |
| elttype, stream, '\'', type_len); |
| fputs_filtered ("'", stream); |
| fprintf_filtered (stream, _(" <repeats %u times>"), reps); |
| i = rep1 - 1; |
| things_printed += options->repeat_count_threshold; |
| need_comma = 1; |
| } |
| else |
| { |
| if (!in_quotes) |
| { |
| fputs_filtered ("\"", stream); |
| in_quotes = 1; |
| } |
| ada_emit_char (char_at (string, i, type_len, byte_order), |
| elttype, stream, '"', type_len); |
| things_printed += 1; |
| } |
| } |
| |
| /* Terminate the quotes if necessary. */ |
| if (in_quotes) |
| fputs_filtered ("\"", stream); |
| |
| if (force_ellipses || i < length) |
| fputs_filtered ("...", stream); |
| } |
| |
| void |
| ada_printstr (struct ui_file *stream, struct type *type, |
| const gdb_byte *string, unsigned int length, |
| const char *encoding, int force_ellipses, |
| const struct value_print_options *options) |
| { |
| printstr (stream, type, string, length, force_ellipses, TYPE_LENGTH (type), |
| options); |
| } |
| |
| static int |
| print_variant_part (struct type *type, int field_num, |
| const gdb_byte *valaddr, int offset, |
| struct ui_file *stream, int recurse, |
| const struct value *val, |
| const struct value_print_options *options, |
| int comma_needed, |
| struct type *outer_type, int outer_offset, |
| const struct language_defn *language) |
| { |
| struct type *var_type = TYPE_FIELD_TYPE (type, field_num); |
| int which = ada_which_variant_applies (var_type, outer_type, |
| valaddr + outer_offset); |
| |
| if (which < 0) |
| return 0; |
| else |
| return print_field_values |
| (TYPE_FIELD_TYPE (var_type, which), |
| valaddr, |
| offset + TYPE_FIELD_BITPOS (type, field_num) / HOST_CHAR_BIT |
| + TYPE_FIELD_BITPOS (var_type, which) / HOST_CHAR_BIT, |
| stream, recurse, val, options, |
| comma_needed, outer_type, outer_offset, language); |
| } |
| |
| /* Print out fields of value at VALADDR + OFFSET having structure type TYPE. |
| |
| TYPE, VALADDR, OFFSET, STREAM, RECURSE, and OPTIONS have the same |
| meanings as in ada_print_value and ada_val_print. |
| |
| OUTER_TYPE and OUTER_OFFSET give type and address of enclosing |
| record (used to get discriminant values when printing variant |
| parts). |
| |
| COMMA_NEEDED is 1 if fields have been printed at the current recursion |
| level, so that a comma is needed before any field printed by this |
| call. |
| |
| Returns 1 if COMMA_NEEDED or any fields were printed. */ |
| |
| static int |
| print_field_values (struct type *type, const gdb_byte *valaddr, |
| int offset, struct ui_file *stream, int recurse, |
| const struct value *val, |
| const struct value_print_options *options, |
| int comma_needed, |
| struct type *outer_type, int outer_offset, |
| const struct language_defn *language) |
| { |
| int i, len; |
| |
| len = TYPE_NFIELDS (type); |
| |
| for (i = 0; i < len; i += 1) |
| { |
| if (ada_is_ignored_field (type, i)) |
| continue; |
| |
| if (ada_is_wrapper_field (type, i)) |
| { |
| comma_needed = |
| print_field_values (TYPE_FIELD_TYPE (type, i), |
| valaddr, |
| (offset |
| + TYPE_FIELD_BITPOS (type, i) / HOST_CHAR_BIT), |
| stream, recurse, val, options, |
| comma_needed, type, offset, language); |
| continue; |
| } |
| else if (ada_is_variant_part (type, i)) |
| { |
| comma_needed = |
| print_variant_part (type, i, valaddr, |
| offset, stream, recurse, val, |
| options, comma_needed, |
| outer_type, outer_offset, language); |
| continue; |
| } |
| |
| if (comma_needed) |
| fprintf_filtered (stream, ", "); |
| comma_needed = 1; |
| |
| if (options->prettyformat) |
| { |
| fprintf_filtered (stream, "\n"); |
| print_spaces_filtered (2 + 2 * recurse, stream); |
| } |
| else |
| { |
| wrap_here (n_spaces (2 + 2 * recurse)); |
| } |
| |
| annotate_field_begin (TYPE_FIELD_TYPE (type, i)); |
| fprintf_filtered (stream, "%.*s", |
| ada_name_prefix_len (TYPE_FIELD_NAME (type, i)), |
| TYPE_FIELD_NAME (type, i)); |
| annotate_field_name_end (); |
| fputs_filtered (" => ", stream); |
| annotate_field_value (); |
| |
| if (TYPE_FIELD_PACKED (type, i)) |
| { |
| struct value *v; |
| |
| /* Bitfields require special handling, especially due to byte |
| order problems. */ |
| if (HAVE_CPLUS_STRUCT (type) && TYPE_FIELD_IGNORE (type, i)) |
| { |
| fputs_filtered (_("<optimized out or zero length>"), stream); |
| } |
| else |
| { |
| int bit_pos = TYPE_FIELD_BITPOS (type, i); |
| int bit_size = TYPE_FIELD_BITSIZE (type, i); |
| struct value_print_options opts; |
| |
| adjust_type_signedness (TYPE_FIELD_TYPE (type, i)); |
| v = ada_value_primitive_packed_val |
| (NULL, valaddr, |
| offset + bit_pos / HOST_CHAR_BIT, |
| bit_pos % HOST_CHAR_BIT, |
| bit_size, TYPE_FIELD_TYPE (type, i)); |
| opts = *options; |
| opts.deref_ref = 0; |
| val_print (TYPE_FIELD_TYPE (type, i), |
| value_contents_for_printing (v), |
| value_embedded_offset (v), 0, |
| stream, recurse + 1, v, |
| &opts, language); |
| } |
| } |
| else |
| { |
| struct value_print_options opts = *options; |
| |
| opts.deref_ref = 0; |
| val_print (TYPE_FIELD_TYPE (type, i), valaddr, |
| (offset + TYPE_FIELD_BITPOS (type, i) / HOST_CHAR_BIT), |
| 0, stream, recurse + 1, val, &opts, language); |
| } |
| annotate_field_end (); |
| } |
| |
| return comma_needed; |
| } |
| |
| /* Implement Ada val_print'ing for the case where TYPE is |
| a TYPE_CODE_ARRAY of characters. */ |
| |
| static void |
| ada_val_print_string (struct type *type, const gdb_byte *valaddr, |
| int offset, int offset_aligned, CORE_ADDR address, |
| struct ui_file *stream, int recurse, |
| const struct value *original_value, |
| const struct value_print_options *options) |
| { |
| enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type)); |
| struct type *elttype = TYPE_TARGET_TYPE (type); |
| unsigned int eltlen; |
| unsigned int len; |
| |
| /* We know that ELTTYPE cannot possibly be null, because we assume |
| that we're called only when TYPE is a string-like type. |
| Similarly, the size of ELTTYPE should also be non-null, since |
| it's a character-like type. */ |
| gdb_assert (elttype != NULL); |
| gdb_assert (TYPE_LENGTH (elttype) != 0); |
| |
| eltlen = TYPE_LENGTH (elttype); |
| len = TYPE_LENGTH (type) / eltlen; |
| |
| if (options->prettyformat_arrays) |
| print_spaces_filtered (2 + 2 * recurse, stream); |
| |
| /* If requested, look for the first null char and only print |
| elements up to it. */ |
| if (options->stop_print_at_null) |
| { |
| int temp_len; |
| |
| /* Look for a NULL char. */ |
| for (temp_len = 0; |
| (temp_len < len |
| && temp_len < options->print_max |
| && char_at (valaddr + offset_aligned, |
| temp_len, eltlen, byte_order) != 0); |
| temp_len += 1); |
| len = temp_len; |
| } |
| |
| printstr (stream, elttype, valaddr + offset_aligned, len, 0, |
| eltlen, options); |
| } |
| |
| /* Implement Ada val_print-ing for GNAT arrays (Eg. fat pointers, |
| thin pointers, etc). */ |
| |
| static void |
| ada_val_print_gnat_array (struct type *type, const gdb_byte *valaddr, |
| int offset, CORE_ADDR address, |
| struct ui_file *stream, int recurse, |
| const struct value *original_value, |
| const struct value_print_options *options, |
| const struct language_defn *language) |
| { |
| struct value *mark = value_mark (); |
| struct value *val; |
| |
| val = value_from_contents_and_address (type, valaddr + offset, address); |
| /* If this is a reference, coerce it now. This helps taking care |
| of the case where ADDRESS is meaningless because original_value |
| was not an lval. */ |
| val = coerce_ref (val); |
| if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) /* array access type. */ |
| val = ada_coerce_to_simple_array_ptr (val); |
| else |
| val = ada_coerce_to_simple_array (val); |
| if (val == NULL) |
| { |
| gdb_assert (TYPE_CODE (type) == TYPE_CODE_TYPEDEF); |
| fprintf_filtered (stream, "0x0"); |
| } |
| else |
| val_print (value_type (val), value_contents_for_printing (val), |
| value_embedded_offset (val), value_address (val), |
| stream, recurse, val, options, language); |
| value_free_to_mark (mark); |
| } |
| |
| /* Implement Ada val_print'ing for the case where TYPE is |
| a TYPE_CODE_PTR. */ |
| |
| static void |
| ada_val_print_ptr (struct type *type, const gdb_byte *valaddr, |
| int offset, int offset_aligned, CORE_ADDR address, |
| struct ui_file *stream, int recurse, |
| const struct value *original_value, |
| const struct value_print_options *options, |
| const struct language_defn *language) |
| { |
| val_print (type, valaddr, offset, address, stream, recurse, |
| original_value, options, language_def (language_c)); |
| |
| if (ada_is_tag_type (type)) |
| { |
| struct value *val = |
| value_from_contents_and_address (type, |
| valaddr + offset_aligned, |
| address + offset_aligned); |
| const char *name = ada_tag_name (val); |
| |
| if (name != NULL) |
| fprintf_filtered (stream, " (%s)", name); |
| } |
| } |
| |
| /* Implement Ada val_print'ing for the case where TYPE is |
| a TYPE_CODE_INT or TYPE_CODE_RANGE. */ |
| |
| static void |
| ada_val_print_num (struct type *type, const gdb_byte *valaddr, |
| int offset, int offset_aligned, CORE_ADDR address, |
| struct ui_file *stream, int recurse, |
| const struct value *original_value, |
| const struct value_print_options *options, |
| const struct language_defn *language) |
| { |
| if (ada_is_fixed_point_type (type)) |
| { |
| LONGEST v = unpack_long (type, valaddr + offset_aligned); |
| |
| fprintf_filtered (stream, TYPE_LENGTH (type) < 4 ? "%.11g" : "%.17g", |
| (double) ada_fixed_to_float (type, v)); |
| return; |
| } |
| else if (TYPE_CODE (type) == TYPE_CODE_RANGE) |
| { |
| struct type *target_type = TYPE_TARGET_TYPE (type); |
| |
| if (TYPE_LENGTH (type) != TYPE_LENGTH (target_type)) |
| { |
| /* Obscure case of range type that has different length from |
| its base type. Perform a conversion, or we will get a |
| nonsense value. Actually, we could use the same |
| code regardless of lengths; I'm just avoiding a cast. */ |
| struct value *v1 |
| = value_from_contents_and_address (type, valaddr + offset, 0); |
| struct value *v = value_cast (target_type, v1); |
| |
| val_print (target_type, value_contents_for_printing (v), |
| value_embedded_offset (v), 0, stream, |
| recurse + 1, v, options, language); |
| } |
| else |
| val_print (TYPE_TARGET_TYPE (type), valaddr, offset, |
| address, stream, recurse, original_value, |
| options, language); |
| return; |
| } |
| else |
| { |
| int format = (options->format ? options->format |
| : options->output_format); |
| |
| if (format) |
| { |
| struct value_print_options opts = *options; |
| |
| opts.format = format; |
| val_print_scalar_formatted (type, valaddr, offset_aligned, |
| original_value, &opts, 0, stream); |
| } |
| else if (ada_is_system_address_type (type)) |
| { |
| /* FIXME: We want to print System.Address variables using |
| the same format as for any access type. But for some |
| reason GNAT encodes the System.Address type as an int, |
| so we have to work-around this deficiency by handling |
| System.Address values as a special case. */ |
| |
| struct gdbarch *gdbarch = get_type_arch (type); |
| struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr; |
| CORE_ADDR addr = extract_typed_address (valaddr + offset_aligned, |
| ptr_type); |
| |
| fprintf_filtered (stream, "("); |
| type_print (type, "", stream, -1); |
| fprintf_filtered (stream, ") "); |
| fputs_filtered (paddress (gdbarch, addr), stream); |
| } |
| else |
| { |
| val_print_type_code_int (type, valaddr + offset_aligned, stream); |
| if (ada_is_character_type (type)) |
| { |
| LONGEST c; |
| |
| fputs_filtered (" ", stream); |
| c = unpack_long (type, valaddr + offset_aligned); |
| ada_printchar (c, type, stream); |
| } |
| } |
| return; |
| } |
| } |
| |
| /* Implement Ada val_print'ing for the case where TYPE is |
| a TYPE_CODE_ENUM. */ |
| |
| static void |
| ada_val_print_enum (struct type *type, const gdb_byte *valaddr, |
| int offset, int offset_aligned, CORE_ADDR address, |
| struct ui_file *stream, int recurse, |
| const struct value *original_value, |
| const struct value_print_options *options, |
| const struct language_defn *language) |
| { |
| int i; |
| unsigned int len; |
| LONGEST val; |
| |
| if (options->format) |
| { |
| val_print_scalar_formatted (type, valaddr, offset_aligned, |
| original_value, options, 0, stream); |
| return; |
| } |
| |
| len = TYPE_NFIELDS (type); |
| val = unpack_long (type, valaddr + offset_aligned); |
| for (i = 0; i < len; i++) |
| { |
| QUIT; |
| if (val == TYPE_FIELD_ENUMVAL (type, i)) |
| break; |
| } |
| |
| if (i < len) |
| { |
| const char *name = ada_enum_name (TYPE_FIELD_NAME (type, i)); |
| |
| if (name[0] == '\'') |
| fprintf_filtered (stream, "%ld %s", (long) val, name); |
| else |
| fputs_filtered (name, stream); |
| } |
| else |
| print_longest (stream, 'd', 0, val); |
| } |
| |
| /* Implement Ada val_print'ing for the case where TYPE is |
| a TYPE_CODE_FLT. */ |
| |
| static void |
| ada_val_print_flt (struct type *type, const gdb_byte *valaddr, |
| int offset, int offset_aligned, CORE_ADDR address, |
| struct ui_file *stream, int recurse, |
| const struct value *original_value, |
| const struct value_print_options *options, |
| const struct language_defn *language) |
| { |
| if (options->format) |
| { |
| val_print (type, valaddr, offset, address, stream, recurse, |
| original_value, options, language_def (language_c)); |
| return; |
| } |
| |
| ada_print_floating (valaddr + offset, type, stream); |
| } |
| |
| /* Implement Ada val_print'ing for the case where TYPE is |
| a TYPE_CODE_STRUCT or TYPE_CODE_UNION. */ |
| |
| static void |
| ada_val_print_struct_union |
| (struct type *type, const gdb_byte *valaddr, int offset, |
| int offset_aligned, CORE_ADDR address, struct ui_file *stream, |
| int recurse, const struct value *original_value, |
| const struct value_print_options *options, |
| const struct language_defn *language) |
| { |
| if (ada_is_bogus_array_descriptor (type)) |
| { |
| fprintf_filtered (stream, "(...?)"); |
| return; |
| } |
| |
| fprintf_filtered (stream, "("); |
| |
| if (print_field_values (type, valaddr, offset_aligned, |
| stream, recurse, original_value, options, |
| 0, type, offset_aligned, language) != 0 |
| && options->prettyformat) |
| { |
| fprintf_filtered (stream, "\n"); |
| print_spaces_filtered (2 * recurse, stream); |
| } |
| |
| fprintf_filtered (stream, ")"); |
| } |
| |
| /* Implement Ada val_print'ing for the case where TYPE is |
| a TYPE_CODE_ARRAY. */ |
| |
| static void |
| ada_val_print_array (struct type *type, const gdb_byte *valaddr, |
| int offset, int offset_aligned, CORE_ADDR address, |
| struct ui_file *stream, int recurse, |
| const struct value *original_value, |
| const struct value_print_options *options) |
| { |
| /* For an array of characters, print with string syntax. */ |
| if (ada_is_string_type (type) |
| && (options->format == 0 || options->format == 's')) |
| { |
| ada_val_print_string (type, valaddr, offset, offset_aligned, |
| address, stream, recurse, original_value, |
| options); |
| return; |
| } |
| |
| fprintf_filtered (stream, "("); |
| print_optional_low_bound (stream, type, options); |
| if (TYPE_FIELD_BITSIZE (type, 0) > 0) |
| val_print_packed_array_elements (type, valaddr, offset_aligned, |
| 0, stream, recurse, |
| original_value, options); |
| else |
| val_print_array_elements (type, valaddr, offset_aligned, address, |
| stream, recurse, original_value, |
| options, 0); |
| fprintf_filtered (stream, ")"); |
| } |
| |
| /* Implement Ada val_print'ing for the case where TYPE is |
| a TYPE_CODE_REF. */ |
| |
| static void |
| ada_val_print_ref (struct type *type, const gdb_byte *valaddr, |
| int offset, int offset_aligned, CORE_ADDR address, |
| struct ui_file *stream, int recurse, |
| const struct value *original_value, |
| const struct value_print_options *options, |
| const struct language_defn *language) |
| { |
| /* For references, the debugger is expected to print the value as |
| an address if DEREF_REF is null. But printing an address in place |
| of the object value would be confusing to an Ada programmer. |
| So, for Ada values, we print the actual dereferenced value |
| regardless. */ |
| struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type)); |
| struct value *deref_val; |
| CORE_ADDR deref_val_int; |
| |
| if (TYPE_CODE (elttype) == TYPE_CODE_UNDEF) |
| { |
| fputs_filtered ("<ref to undefined type>", stream); |
| return; |
| } |
| |
| deref_val = coerce_ref_if_computed (original_value); |
| if (deref_val) |
| { |
| if (ada_is_tagged_type (value_type (deref_val), 1)) |
| deref_val = ada_tag_value_at_base_address (deref_val); |
| |
| common_val_print (deref_val, stream, recurse + 1, options, |
| language); |
| return; |
| } |
| |
| deref_val_int = unpack_pointer (type, valaddr + offset_aligned); |
| if (deref_val_int == 0) |
| { |
| fputs_filtered ("(null)", stream); |
| return; |
| } |
| |
| deref_val |
| = ada_value_ind (value_from_pointer (lookup_pointer_type (elttype), |
| deref_val_int)); |
| if (ada_is_tagged_type (value_type (deref_val), 1)) |
| deref_val = ada_tag_value_at_base_address (deref_val); |
| |
| /* Make sure that the object does not have an unreasonable size |
| before trying to print it. This can happen for instance with |
| references to dynamic objects whose contents is uninitialized |
| (Eg: an array whose bounds are not set yet). */ |
| ada_ensure_varsize_limit (value_type (deref_val)); |
| |
| val_print (value_type (deref_val), |
| value_contents_for_printing (deref_val), |
| value_embedded_offset (deref_val), |
| value_address (deref_val), stream, recurse + 1, |
| deref_val, options, language); |
| } |
| |
| /* See the comment on ada_val_print. This function differs in that it |
| does not catch evaluation errors (leaving that to ada_val_print). */ |
| |
| static void |
| ada_val_print_1 (struct type *type, const gdb_byte *valaddr, |
| int offset, CORE_ADDR address, |
| struct ui_file *stream, int recurse, |
| const struct value *original_value, |
| const struct value_print_options *options, |
| const struct language_defn *language) |
| { |
| int offset_aligned; |
| |
| type = ada_check_typedef (type); |
| |
| if (ada_is_array_descriptor_type (type) |
| || (ada_is_constrained_packed_array_type (type) |
| && TYPE_CODE (type) != TYPE_CODE_PTR)) |
| { |
| ada_val_print_gnat_array (type, valaddr, offset, address, |
| stream, recurse, original_value, |
| options, language); |
| return; |
| } |
| |
| offset_aligned = offset + ada_aligned_value_addr (type, valaddr) - valaddr; |
| type = printable_val_type (type, valaddr + offset_aligned); |
| type = resolve_dynamic_type (type, valaddr + offset_aligned, |
| address + offset_aligned); |
| |
| switch (TYPE_CODE (type)) |
| { |
| default: |
| val_print (type, valaddr, offset, address, stream, recurse, |
| original_value, options, language_def (language_c)); |
| break; |
| |
| case TYPE_CODE_PTR: |
| ada_val_print_ptr (type, valaddr, offset, offset_aligned, |
| address, stream, recurse, original_value, |
| options, language); |
| break; |
| |
| case TYPE_CODE_INT: |
| case TYPE_CODE_RANGE: |
| ada_val_print_num (type, valaddr, offset, offset_aligned, |
| address, stream, recurse, original_value, |
| options, language); |
| break; |
| |
| case TYPE_CODE_ENUM: |
| ada_val_print_enum (type, valaddr, offset, offset_aligned, |
| address, stream, recurse, original_value, |
| options, language); |
| break; |
| |
| case TYPE_CODE_FLT: |
| ada_val_print_flt (type, valaddr, offset, offset_aligned, |
| address, stream, recurse, original_value, |
| options, language); |
| break; |
| |
| case TYPE_CODE_UNION: |
| case TYPE_CODE_STRUCT: |
| ada_val_print_struct_union (type, valaddr, offset, offset_aligned, |
| address, stream, recurse, |
| original_value, options, language); |
| break; |
| |
| case TYPE_CODE_ARRAY: |
| ada_val_print_array (type, valaddr, offset, offset_aligned, |
| address, stream, recurse, original_value, |
| options); |
| return; |
| |
| case TYPE_CODE_REF: |
| ada_val_print_ref (type, valaddr, offset, offset_aligned, |
| address, stream, recurse, original_value, |
| options, language); |
| break; |
| } |
| } |
| |
| /* See val_print for a description of the various parameters of this |
| function; they are identical. */ |
| |
| void |
| ada_val_print (struct type *type, const gdb_byte *valaddr, |
| int embedded_offset, CORE_ADDR address, |
| struct ui_file *stream, int recurse, |
| const struct value *val, |
| const struct value_print_options *options) |
| { |
| |
| /* XXX: this catches QUIT/ctrl-c as well. Isn't that busted? */ |
| TRY |
| { |
| ada_val_print_1 (type, valaddr, embedded_offset, address, |
| stream, recurse, val, options, |
| current_language); |
| } |
| CATCH (except, RETURN_MASK_ALL) |
| { |
| } |
| END_CATCH |
| } |
| |
| void |
| ada_value_print (struct value *val0, struct ui_file *stream, |
| const struct value_print_options *options) |
| { |
| struct value *val = ada_to_fixed_value (val0); |
| CORE_ADDR address = value_address (val); |
| struct type *type = ada_check_typedef (value_enclosing_type (val)); |
| struct value_print_options opts; |
| |
| /* If it is a pointer, indicate what it points to. */ |
| if (TYPE_CODE (type) == TYPE_CODE_PTR) |
| { |
| /* Hack: don't print (char *) for char strings. Their |
| type is indicated by the quoted string anyway. */ |
| if (TYPE_LENGTH (TYPE_TARGET_TYPE (type)) != sizeof (char) |
| || TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_INT |
| || TYPE_UNSIGNED (TYPE_TARGET_TYPE (type))) |
| { |
| fprintf_filtered (stream, "("); |
| type_print (type, "", stream, -1); |
| fprintf_filtered (stream, ") "); |
| } |
| } |
| else if (ada_is_array_descriptor_type (type)) |
| { |
| /* We do not print the type description unless TYPE is an array |
| access type (this is encoded by the compiler as a typedef to |
| a fat pointer - hence the check against TYPE_CODE_TYPEDEF). */ |
| if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) |
| { |
| fprintf_filtered (stream, "("); |
| type_print (type, "", stream, -1); |
| fprintf_filtered (stream, ") "); |
| } |
| } |
| else if (ada_is_bogus_array_descriptor (type)) |
| { |
| fprintf_filtered (stream, "("); |
| type_print (type, "", stream, -1); |
| fprintf_filtered (stream, ") (...?)"); |
| return; |
| } |
| |
| opts = *options; |
| opts.deref_ref = 1; |
| val_print (type, value_contents_for_printing (val), |
| value_embedded_offset (val), address, |
| stream, 0, val, &opts, current_language); |
| } |