1111 lines
31 KiB
C
1111 lines
31 KiB
C
/* Support for printing Ada values for GDB, the GNU debugger.
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Copyright (C) 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1997, 2001, 2002,
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2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <ctype.h>
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#include "defs.h"
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#include "gdb_string.h"
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#include "symtab.h"
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#include "gdbtypes.h"
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#include "expression.h"
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#include "value.h"
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#include "demangle.h"
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#include "valprint.h"
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#include "language.h"
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#include "annotate.h"
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#include "ada-lang.h"
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#include "c-lang.h"
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#include "infcall.h"
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#include "exceptions.h"
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/* Encapsulates arguments to ada_val_print. */
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struct ada_val_print_args
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{
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struct type *type;
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const gdb_byte *valaddr0;
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int embedded_offset;
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CORE_ADDR address;
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struct ui_file *stream;
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int format;
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int deref_ref;
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int recurse;
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enum val_prettyprint pretty;
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};
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static void print_record (struct type *, const gdb_byte *, struct ui_file *,
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int, int, enum val_prettyprint);
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static int print_field_values (struct type *, const gdb_byte *,
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struct ui_file *, int, int,
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enum val_prettyprint, int, struct type *,
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const gdb_byte *);
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static void adjust_type_signedness (struct type *);
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static int ada_val_print_stub (void *args0);
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static int ada_val_print_1 (struct type *, const gdb_byte *, int, CORE_ADDR,
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struct ui_file *, int, int, int,
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enum val_prettyprint);
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/* Make TYPE unsigned if its range of values includes no negatives. */
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static void
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adjust_type_signedness (struct type *type)
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{
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if (type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE
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&& TYPE_LOW_BOUND (type) >= 0)
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TYPE_FLAGS (type) |= TYPE_FLAG_UNSIGNED;
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}
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/* Assuming TYPE is a simple, non-empty array type, prints its lower bound
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on STREAM, if non-standard (i.e., other than 1 for numbers, other
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than lower bound of index type for enumerated type). Returns 1
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if something printed, otherwise 0. */
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static int
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print_optional_low_bound (struct ui_file *stream, struct type *type)
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{
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struct type *index_type;
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long low_bound;
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if (print_array_indexes_p ())
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return 0;
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if (!get_array_low_bound (type, &low_bound))
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return 0;
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index_type = TYPE_INDEX_TYPE (type);
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if (TYPE_CODE (index_type) == TYPE_CODE_RANGE)
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{
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/* We need to know what the base type is, in order to do the
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appropriate check below. Otherwise, if this is a subrange
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of an enumerated type, where the underlying value of the
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first element is typically 0, we might test the low bound
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against the wrong value. */
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index_type = TYPE_TARGET_TYPE (index_type);
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}
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switch (TYPE_CODE (index_type))
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{
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case TYPE_CODE_ENUM:
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if (low_bound == TYPE_FIELD_BITPOS (index_type, 0))
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return 0;
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break;
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case TYPE_CODE_UNDEF:
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index_type = builtin_type_long;
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/* FALL THROUGH */
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default:
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if (low_bound == 1)
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return 0;
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break;
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}
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ada_print_scalar (index_type, (LONGEST) low_bound, stream);
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fprintf_filtered (stream, " => ");
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return 1;
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}
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/* Version of val_print_array_elements for GNAT-style packed arrays.
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Prints elements of packed array of type TYPE at bit offset
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BITOFFSET from VALADDR on STREAM. Formats according to FORMAT and
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separates with commas. RECURSE is the recursion (nesting) level.
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If PRETTY, uses "prettier" format. TYPE must have been decoded (as
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by ada_coerce_to_simple_array). */
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static void
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val_print_packed_array_elements (struct type *type, const gdb_byte *valaddr,
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int bitoffset, struct ui_file *stream,
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int format, int recurse,
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enum val_prettyprint pretty)
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{
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unsigned int i;
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unsigned int things_printed = 0;
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unsigned len;
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struct type *elttype, *index_type;
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unsigned eltlen;
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unsigned long bitsize = TYPE_FIELD_BITSIZE (type, 0);
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struct value *mark = value_mark ();
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LONGEST low = 0;
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elttype = TYPE_TARGET_TYPE (type);
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eltlen = TYPE_LENGTH (check_typedef (elttype));
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index_type = TYPE_INDEX_TYPE (type);
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{
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LONGEST high;
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if (get_discrete_bounds (TYPE_FIELD_TYPE (type, 0), &low, &high) < 0)
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len = 1;
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else
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len = high - low + 1;
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}
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i = 0;
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annotate_array_section_begin (i, elttype);
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while (i < len && things_printed < print_max)
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{
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struct value *v0, *v1;
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int i0;
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if (i != 0)
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{
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if (prettyprint_arrays)
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{
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fprintf_filtered (stream, ",\n");
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print_spaces_filtered (2 + 2 * recurse, stream);
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}
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else
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{
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fprintf_filtered (stream, ", ");
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}
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}
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wrap_here (n_spaces (2 + 2 * recurse));
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maybe_print_array_index (index_type, i + low, stream, format, pretty);
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i0 = i;
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v0 = ada_value_primitive_packed_val (NULL, valaddr,
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(i0 * bitsize) / HOST_CHAR_BIT,
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(i0 * bitsize) % HOST_CHAR_BIT,
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bitsize, elttype);
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while (1)
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{
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i += 1;
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if (i >= len)
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break;
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v1 = ada_value_primitive_packed_val (NULL, valaddr,
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(i * bitsize) / HOST_CHAR_BIT,
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(i * bitsize) % HOST_CHAR_BIT,
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bitsize, elttype);
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if (memcmp (value_contents (v0), value_contents (v1), eltlen) != 0)
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break;
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}
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if (i - i0 > repeat_count_threshold)
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{
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val_print (elttype, value_contents (v0), 0, 0, stream, format,
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0, recurse + 1, pretty);
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annotate_elt_rep (i - i0);
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fprintf_filtered (stream, _(" <repeats %u times>"), i - i0);
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annotate_elt_rep_end ();
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}
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else
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{
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int j;
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for (j = i0; j < i; j += 1)
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{
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if (j > i0)
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{
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if (prettyprint_arrays)
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{
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fprintf_filtered (stream, ",\n");
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print_spaces_filtered (2 + 2 * recurse, stream);
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}
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else
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{
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fprintf_filtered (stream, ", ");
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}
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wrap_here (n_spaces (2 + 2 * recurse));
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maybe_print_array_index (index_type, j + low,
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stream, format, pretty);
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}
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val_print (elttype, value_contents (v0), 0, 0, stream, format,
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0, recurse + 1, pretty);
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annotate_elt ();
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}
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}
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things_printed += i - i0;
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}
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annotate_array_section_end ();
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if (i < len)
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{
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fprintf_filtered (stream, "...");
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}
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value_free_to_mark (mark);
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}
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static struct type *
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printable_val_type (struct type *type, const gdb_byte *valaddr)
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{
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return ada_to_fixed_type (ada_aligned_type (type), valaddr, 0, NULL, 1);
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}
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/* Print the character C on STREAM as part of the contents of a literal
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string whose delimiter is QUOTER. TYPE_LEN is the length in bytes
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(1 or 2) of the character. */
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void
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ada_emit_char (int c, struct ui_file *stream, int quoter, int type_len)
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{
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if (type_len != 2)
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type_len = 1;
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c &= (1 << (type_len * TARGET_CHAR_BIT)) - 1;
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if (isascii (c) && isprint (c))
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{
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if (c == quoter && c == '"')
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fprintf_filtered (stream, "\"\"");
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else
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fprintf_filtered (stream, "%c", c);
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}
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else
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fprintf_filtered (stream, "[\"%0*x\"]", type_len * 2, c);
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}
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/* Character #I of STRING, given that TYPE_LEN is the size in bytes (1
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or 2) of a character. */
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static int
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char_at (const gdb_byte *string, int i, int type_len)
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{
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if (type_len == 1)
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return string[i];
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else
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return (int) extract_unsigned_integer (string + 2 * i, 2);
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}
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/* Wrapper around memcpy to make it legal argument to ui_file_put */
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static void
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ui_memcpy (void *dest, const char *buffer, long len)
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{
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memcpy (dest, buffer, (size_t) len);
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((char *) dest)[len] = '\0';
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}
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/* Print a floating-point value of type TYPE, pointed to in GDB by
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VALADDR, on STREAM. Use Ada formatting conventions: there must be
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a decimal point, and at least one digit before and after the
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point. We use GNAT format for NaNs and infinities. */
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static void
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ada_print_floating (const gdb_byte *valaddr, struct type *type,
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struct ui_file *stream)
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{
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char buffer[64];
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char *s, *result;
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int len;
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struct ui_file *tmp_stream = mem_fileopen ();
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struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_stream);
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print_floating (valaddr, type, tmp_stream);
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ui_file_put (tmp_stream, ui_memcpy, buffer);
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do_cleanups (cleanups);
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result = buffer;
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len = strlen (result);
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/* Modify for Ada rules. */
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s = strstr (result, "inf");
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if (s == NULL)
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s = strstr (result, "Inf");
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if (s == NULL)
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s = strstr (result, "INF");
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if (s != NULL)
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strcpy (s, "Inf");
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if (s == NULL)
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{
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s = strstr (result, "nan");
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if (s == NULL)
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s = strstr (result, "NaN");
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if (s == NULL)
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s = strstr (result, "Nan");
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if (s != NULL)
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{
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s[0] = s[2] = 'N';
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if (result[0] == '-')
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result += 1;
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}
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}
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if (s == NULL && strchr (result, '.') == NULL)
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{
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s = strchr (result, 'e');
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if (s == NULL)
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fprintf_filtered (stream, "%s.0", result);
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else
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fprintf_filtered (stream, "%.*s.0%s", (int) (s-result), result, s);
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return;
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}
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fprintf_filtered (stream, "%s", result);
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}
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void
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ada_printchar (int c, struct ui_file *stream)
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{
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fputs_filtered ("'", stream);
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ada_emit_char (c, stream, '\'', 1);
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fputs_filtered ("'", stream);
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}
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/* [From print_type_scalar in typeprint.c]. Print VAL on STREAM in a
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form appropriate for TYPE. */
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void
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ada_print_scalar (struct type *type, LONGEST val, struct ui_file *stream)
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{
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unsigned int i;
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unsigned len;
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type = ada_check_typedef (type);
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switch (TYPE_CODE (type))
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{
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case TYPE_CODE_ENUM:
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len = TYPE_NFIELDS (type);
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for (i = 0; i < len; i++)
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{
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if (TYPE_FIELD_BITPOS (type, i) == val)
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{
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break;
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}
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}
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if (i < len)
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{
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fputs_filtered (ada_enum_name (TYPE_FIELD_NAME (type, i)), stream);
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}
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else
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{
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print_longest (stream, 'd', 0, val);
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}
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break;
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case TYPE_CODE_INT:
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print_longest (stream, TYPE_UNSIGNED (type) ? 'u' : 'd', 0, val);
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break;
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case TYPE_CODE_CHAR:
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LA_PRINT_CHAR ((unsigned char) val, stream);
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break;
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case TYPE_CODE_BOOL:
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fprintf_filtered (stream, val ? "true" : "false");
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break;
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case TYPE_CODE_RANGE:
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ada_print_scalar (TYPE_TARGET_TYPE (type), val, stream);
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return;
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case TYPE_CODE_UNDEF:
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case TYPE_CODE_PTR:
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case TYPE_CODE_ARRAY:
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case TYPE_CODE_STRUCT:
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case TYPE_CODE_UNION:
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case TYPE_CODE_FUNC:
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case TYPE_CODE_FLT:
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case TYPE_CODE_VOID:
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case TYPE_CODE_SET:
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case TYPE_CODE_STRING:
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case TYPE_CODE_ERROR:
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case TYPE_CODE_MEMBERPTR:
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case TYPE_CODE_METHODPTR:
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case TYPE_CODE_METHOD:
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case TYPE_CODE_REF:
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warning (_("internal error: unhandled type in ada_print_scalar"));
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break;
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default:
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error (_("Invalid type code in symbol table."));
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}
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gdb_flush (stream);
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}
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/* Print the character string STRING, printing at most LENGTH characters.
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Printing stops early if the number hits print_max; repeat counts
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are printed as appropriate. Print ellipses at the end if we
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had to stop before printing LENGTH characters, or if
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FORCE_ELLIPSES. TYPE_LEN is the length (1 or 2) of the character type.
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*/
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static void
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printstr (struct ui_file *stream, const gdb_byte *string,
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unsigned int length, int force_ellipses, int type_len)
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{
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unsigned int i;
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unsigned int things_printed = 0;
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int in_quotes = 0;
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int need_comma = 0;
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if (length == 0)
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{
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fputs_filtered ("\"\"", stream);
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return;
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}
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for (i = 0; i < length && things_printed < print_max; i += 1)
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{
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/* Position of the character we are examining
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to see whether it is repeated. */
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unsigned int rep1;
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/* Number of repetitions we have detected so far. */
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unsigned int reps;
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QUIT;
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if (need_comma)
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{
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fputs_filtered (", ", stream);
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need_comma = 0;
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}
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rep1 = i + 1;
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reps = 1;
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while (rep1 < length
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&& char_at (string, rep1, type_len) == char_at (string, i,
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type_len))
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{
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rep1 += 1;
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reps += 1;
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}
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if (reps > repeat_count_threshold)
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{
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if (in_quotes)
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{
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if (inspect_it)
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fputs_filtered ("\\\", ", stream);
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else
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fputs_filtered ("\", ", stream);
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in_quotes = 0;
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}
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fputs_filtered ("'", stream);
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ada_emit_char (char_at (string, i, type_len), stream, '\'',
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type_len);
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fputs_filtered ("'", stream);
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fprintf_filtered (stream, _(" <repeats %u times>"), reps);
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i = rep1 - 1;
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things_printed += repeat_count_threshold;
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need_comma = 1;
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}
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else
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{
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if (!in_quotes)
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{
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if (inspect_it)
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fputs_filtered ("\\\"", stream);
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else
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fputs_filtered ("\"", stream);
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in_quotes = 1;
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}
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ada_emit_char (char_at (string, i, type_len), stream, '"',
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type_len);
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things_printed += 1;
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}
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}
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/* Terminate the quotes if necessary. */
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if (in_quotes)
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{
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if (inspect_it)
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fputs_filtered ("\\\"", stream);
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else
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fputs_filtered ("\"", stream);
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}
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if (force_ellipses || i < length)
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fputs_filtered ("...", stream);
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}
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void
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ada_printstr (struct ui_file *stream, const gdb_byte *string,
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unsigned int length, int width, int force_ellipses)
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{
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printstr (stream, string, length, force_ellipses, width);
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}
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/* Print data of type TYPE located at VALADDR (within GDB), which came from
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the inferior at address ADDRESS, onto stdio stream STREAM according to
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FORMAT (a letter as for the printf % codes or 0 for natural format).
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The data at VALADDR is in target byte order.
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If the data is printed as a string, returns the number of string characters
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printed.
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If DEREF_REF is nonzero, then dereference references, otherwise just print
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them like pointers.
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|
||
RECURSE indicates the amount of indentation to supply before
|
||
continuation lines; this amount is roughly twice the value of RECURSE.
|
||
|
||
When PRETTY is non-zero, prints record fields on separate lines.
|
||
(For some reason, the current version of gdb instead uses a global
|
||
variable---prettyprint_arrays--- to causes a similar effect on
|
||
arrays.) */
|
||
|
||
int
|
||
ada_val_print (struct type *type, const gdb_byte *valaddr0,
|
||
int embedded_offset, CORE_ADDR address,
|
||
struct ui_file *stream, int format, int deref_ref,
|
||
int recurse, enum val_prettyprint pretty)
|
||
{
|
||
struct ada_val_print_args args;
|
||
args.type = type;
|
||
args.valaddr0 = valaddr0;
|
||
args.embedded_offset = embedded_offset;
|
||
args.address = address;
|
||
args.stream = stream;
|
||
args.format = format;
|
||
args.deref_ref = deref_ref;
|
||
args.recurse = recurse;
|
||
args.pretty = pretty;
|
||
|
||
return catch_errors (ada_val_print_stub, &args, NULL, RETURN_MASK_ALL);
|
||
}
|
||
|
||
/* Helper for ada_val_print; used as argument to catch_errors to
|
||
unmarshal the arguments to ada_val_print_1, which does the work. */
|
||
static int
|
||
ada_val_print_stub (void *args0)
|
||
{
|
||
struct ada_val_print_args *argsp = (struct ada_val_print_args *) args0;
|
||
return ada_val_print_1 (argsp->type, argsp->valaddr0,
|
||
argsp->embedded_offset, argsp->address,
|
||
argsp->stream, argsp->format, argsp->deref_ref,
|
||
argsp->recurse, argsp->pretty);
|
||
}
|
||
|
||
/* 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 int
|
||
ada_val_print_1 (struct type *type, const gdb_byte *valaddr0,
|
||
int embedded_offset, CORE_ADDR address,
|
||
struct ui_file *stream, int format,
|
||
int deref_ref, int recurse, enum val_prettyprint pretty)
|
||
{
|
||
unsigned int len;
|
||
int i;
|
||
struct type *elttype;
|
||
unsigned int eltlen;
|
||
LONGEST val;
|
||
const gdb_byte *valaddr = valaddr0 + embedded_offset;
|
||
|
||
type = ada_check_typedef (type);
|
||
|
||
if (ada_is_array_descriptor_type (type) || ada_is_packed_array_type (type))
|
||
{
|
||
int retn;
|
||
struct value *mark = value_mark ();
|
||
struct value *val;
|
||
val = value_from_contents_and_address (type, valaddr, address);
|
||
val = ada_coerce_to_simple_array_ptr (val);
|
||
if (val == NULL)
|
||
{
|
||
fprintf_filtered (stream, "(null)");
|
||
retn = 0;
|
||
}
|
||
else
|
||
retn = ada_val_print_1 (value_type (val), value_contents (val), 0,
|
||
VALUE_ADDRESS (val), stream, format,
|
||
deref_ref, recurse, pretty);
|
||
value_free_to_mark (mark);
|
||
return retn;
|
||
}
|
||
|
||
valaddr = ada_aligned_value_addr (type, valaddr);
|
||
embedded_offset -= valaddr - valaddr0 - embedded_offset;
|
||
type = printable_val_type (type, valaddr);
|
||
|
||
switch (TYPE_CODE (type))
|
||
{
|
||
default:
|
||
return c_val_print (type, valaddr0, embedded_offset, address, stream,
|
||
format, deref_ref, recurse, pretty);
|
||
|
||
case TYPE_CODE_PTR:
|
||
{
|
||
int ret = c_val_print (type, valaddr0, embedded_offset, address,
|
||
stream, format, deref_ref, recurse, pretty);
|
||
if (ada_is_tag_type (type))
|
||
{
|
||
struct value *val =
|
||
value_from_contents_and_address (type, valaddr, address);
|
||
const char *name = ada_tag_name (val);
|
||
if (name != NULL)
|
||
fprintf_filtered (stream, " (%s)", name);
|
||
return 0;
|
||
}
|
||
return ret;
|
||
}
|
||
|
||
case TYPE_CODE_INT:
|
||
case TYPE_CODE_RANGE:
|
||
if (ada_is_fixed_point_type (type))
|
||
{
|
||
LONGEST v = unpack_long (type, valaddr);
|
||
int len = TYPE_LENGTH (type);
|
||
|
||
fprintf_filtered (stream, len < 4 ? "%.11g" : "%.17g",
|
||
(double) ada_fixed_to_float (type, v));
|
||
return 0;
|
||
}
|
||
else if (ada_is_vax_floating_type (type))
|
||
{
|
||
struct value *val =
|
||
value_from_contents_and_address (type, valaddr, address);
|
||
struct value *func = ada_vax_float_print_function (type);
|
||
if (func != 0)
|
||
{
|
||
static struct type *parray_of_char = NULL;
|
||
struct value *printable_val;
|
||
|
||
if (parray_of_char == NULL)
|
||
parray_of_char =
|
||
make_pointer_type
|
||
(create_array_type
|
||
(NULL, builtin_type_char,
|
||
create_range_type (NULL, builtin_type_int, 0, 32)), NULL);
|
||
|
||
printable_val =
|
||
value_ind (value_cast (parray_of_char,
|
||
call_function_by_hand (func, 1,
|
||
&val)));
|
||
|
||
fprintf_filtered (stream, "%s", value_contents (printable_val));
|
||
return 0;
|
||
}
|
||
/* No special printing function. Do as best we can. */
|
||
}
|
||
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 *v = value_cast (target_type,
|
||
value_from_contents_and_address
|
||
(type, valaddr, 0));
|
||
return ada_val_print_1 (target_type, value_contents (v), 0, 0,
|
||
stream, format, 0, recurse + 1, pretty);
|
||
}
|
||
else
|
||
return ada_val_print_1 (TYPE_TARGET_TYPE (type),
|
||
valaddr0, embedded_offset,
|
||
address, stream, format, deref_ref,
|
||
recurse, pretty);
|
||
}
|
||
else
|
||
{
|
||
format = format ? format : output_format;
|
||
if (format)
|
||
{
|
||
print_scalar_formatted (valaddr, type, format, 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. */
|
||
fprintf_filtered (stream, "(");
|
||
type_print (type, "", stream, -1);
|
||
fprintf_filtered (stream, ") ");
|
||
fputs_filtered (paddress (extract_typed_address
|
||
(valaddr, builtin_type_void_data_ptr)),
|
||
stream);
|
||
}
|
||
else
|
||
{
|
||
val_print_type_code_int (type, valaddr, stream);
|
||
if (ada_is_character_type (type))
|
||
{
|
||
fputs_filtered (" ", stream);
|
||
ada_printchar ((unsigned char) unpack_long (type, valaddr),
|
||
stream);
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
case TYPE_CODE_ENUM:
|
||
if (format)
|
||
{
|
||
print_scalar_formatted (valaddr, type, format, 0, stream);
|
||
break;
|
||
}
|
||
len = TYPE_NFIELDS (type);
|
||
val = unpack_long (type, valaddr);
|
||
for (i = 0; i < len; i++)
|
||
{
|
||
QUIT;
|
||
if (val == TYPE_FIELD_BITPOS (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);
|
||
}
|
||
break;
|
||
|
||
case TYPE_CODE_FLAGS:
|
||
if (format)
|
||
print_scalar_formatted (valaddr, type, format, 0, stream);
|
||
else
|
||
val_print_type_code_flags (type, valaddr, stream);
|
||
break;
|
||
|
||
case TYPE_CODE_FLT:
|
||
if (format)
|
||
return c_val_print (type, valaddr0, embedded_offset, address, stream,
|
||
format, deref_ref, recurse, pretty);
|
||
else
|
||
ada_print_floating (valaddr0 + embedded_offset, type, stream);
|
||
break;
|
||
|
||
case TYPE_CODE_UNION:
|
||
case TYPE_CODE_STRUCT:
|
||
if (ada_is_bogus_array_descriptor (type))
|
||
{
|
||
fprintf_filtered (stream, "(...?)");
|
||
return 0;
|
||
}
|
||
else
|
||
{
|
||
print_record (type, valaddr, stream, format, recurse, pretty);
|
||
return 0;
|
||
}
|
||
|
||
case TYPE_CODE_ARRAY:
|
||
elttype = TYPE_TARGET_TYPE (type);
|
||
if (elttype == NULL)
|
||
eltlen = 0;
|
||
else
|
||
eltlen = TYPE_LENGTH (elttype);
|
||
/* FIXME: This doesn't deal with non-empty arrays of
|
||
0-length items (not a typical case!) */
|
||
if (eltlen == 0)
|
||
len = 0;
|
||
else
|
||
len = TYPE_LENGTH (type) / eltlen;
|
||
|
||
/* For an array of chars, print with string syntax. */
|
||
if (ada_is_string_type (type) && (format == 0 || format == 's'))
|
||
{
|
||
if (prettyprint_arrays)
|
||
{
|
||
print_spaces_filtered (2 + 2 * recurse, stream);
|
||
}
|
||
/* If requested, look for the first null char and only print
|
||
elements up to it. */
|
||
if (stop_print_at_null)
|
||
{
|
||
int temp_len;
|
||
|
||
/* Look for a NULL char. */
|
||
for (temp_len = 0;
|
||
temp_len < len && temp_len < print_max
|
||
&& char_at (valaddr, temp_len, eltlen) != 0;
|
||
temp_len += 1);
|
||
len = temp_len;
|
||
}
|
||
|
||
printstr (stream, valaddr, len, 0, eltlen);
|
||
}
|
||
else
|
||
{
|
||
len = 0;
|
||
fprintf_filtered (stream, "(");
|
||
print_optional_low_bound (stream, type);
|
||
if (TYPE_FIELD_BITSIZE (type, 0) > 0)
|
||
val_print_packed_array_elements (type, valaddr, 0, stream,
|
||
format, recurse, pretty);
|
||
else
|
||
val_print_array_elements (type, valaddr, address, stream,
|
||
format, deref_ref, recurse,
|
||
pretty, 0);
|
||
fprintf_filtered (stream, ")");
|
||
}
|
||
gdb_flush (stream);
|
||
return len;
|
||
|
||
case TYPE_CODE_REF:
|
||
/* 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. */
|
||
elttype = check_typedef (TYPE_TARGET_TYPE (type));
|
||
|
||
if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
|
||
{
|
||
LONGEST deref_val_int = (LONGEST)
|
||
unpack_pointer (lookup_pointer_type (builtin_type_void),
|
||
valaddr);
|
||
if (deref_val_int != 0)
|
||
{
|
||
struct value *deref_val =
|
||
ada_value_ind (value_from_longest
|
||
(lookup_pointer_type (elttype),
|
||
deref_val_int));
|
||
val_print (value_type (deref_val),
|
||
value_contents (deref_val), 0,
|
||
VALUE_ADDRESS (deref_val), stream, format,
|
||
deref_ref, recurse + 1, pretty);
|
||
}
|
||
else
|
||
fputs_filtered ("(null)", stream);
|
||
}
|
||
else
|
||
fputs_filtered ("???", stream);
|
||
|
||
break;
|
||
}
|
||
gdb_flush (stream);
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
print_variant_part (struct type *type, int field_num, const gdb_byte *valaddr,
|
||
struct ui_file *stream, int format, int recurse,
|
||
enum val_prettyprint pretty, int comma_needed,
|
||
struct type *outer_type, const gdb_byte *outer_valaddr)
|
||
{
|
||
struct type *var_type = TYPE_FIELD_TYPE (type, field_num);
|
||
int which = ada_which_variant_applies (var_type, outer_type, outer_valaddr);
|
||
|
||
if (which < 0)
|
||
return 0;
|
||
else
|
||
return print_field_values
|
||
(TYPE_FIELD_TYPE (var_type, which),
|
||
valaddr + TYPE_FIELD_BITPOS (type, field_num) / HOST_CHAR_BIT
|
||
+ TYPE_FIELD_BITPOS (var_type, which) / HOST_CHAR_BIT,
|
||
stream, format, recurse, pretty,
|
||
comma_needed, outer_type, outer_valaddr);
|
||
}
|
||
|
||
int
|
||
ada_value_print (struct value *val0, struct ui_file *stream, int format,
|
||
enum val_prettyprint pretty)
|
||
{
|
||
const gdb_byte *valaddr = value_contents (val0);
|
||
CORE_ADDR address = VALUE_ADDRESS (val0) + value_offset (val0);
|
||
struct type *type =
|
||
ada_to_fixed_type (value_type (val0), valaddr, address, NULL, 1);
|
||
struct value *val =
|
||
value_from_contents_and_address (type, valaddr, address);
|
||
|
||
/* 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))
|
||
{
|
||
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 0;
|
||
}
|
||
|
||
if (TYPE_CODE (type) == TYPE_CODE_ARRAY
|
||
&& TYPE_LENGTH (TYPE_TARGET_TYPE (type)) == 0
|
||
&& TYPE_CODE (TYPE_INDEX_TYPE (type)) == TYPE_CODE_RANGE)
|
||
{
|
||
/* This is an array of zero-length elements, that is an array
|
||
of null records. This array needs to be printed by hand,
|
||
as the standard routine to print arrays relies on the size of
|
||
the array elements to be nonzero. This is because it computes
|
||
the number of elements in the array by dividing the array size
|
||
by the array element size. */
|
||
fprintf_filtered (stream, "(%d .. %d => ())",
|
||
TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type)),
|
||
TYPE_HIGH_BOUND (TYPE_INDEX_TYPE (type)));
|
||
return 0;
|
||
}
|
||
|
||
return (val_print (type, value_contents (val), 0, address,
|
||
stream, format, 1, 0, pretty));
|
||
}
|
||
|
||
static void
|
||
print_record (struct type *type, const gdb_byte *valaddr,
|
||
struct ui_file *stream, int format, int recurse,
|
||
enum val_prettyprint pretty)
|
||
{
|
||
type = ada_check_typedef (type);
|
||
|
||
fprintf_filtered (stream, "(");
|
||
|
||
if (print_field_values (type, valaddr, stream, format, recurse, pretty,
|
||
0, type, valaddr) != 0 && pretty)
|
||
{
|
||
fprintf_filtered (stream, "\n");
|
||
print_spaces_filtered (2 * recurse, stream);
|
||
}
|
||
|
||
fprintf_filtered (stream, ")");
|
||
}
|
||
|
||
/* Print out fields of value at VALADDR having structure type TYPE.
|
||
|
||
TYPE, VALADDR, STREAM, FORMAT, RECURSE, and PRETTY have the
|
||
same meanings as in ada_print_value and ada_val_print.
|
||
|
||
OUTER_TYPE and OUTER_VALADDR 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,
|
||
struct ui_file *stream, int format, int recurse,
|
||
enum val_prettyprint pretty, int comma_needed,
|
||
struct type *outer_type, const gdb_byte *outer_valaddr)
|
||
{
|
||
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
|
||
+ TYPE_FIELD_BITPOS (type, i) / HOST_CHAR_BIT,
|
||
stream, format, recurse, pretty,
|
||
comma_needed, type, valaddr);
|
||
continue;
|
||
}
|
||
else if (ada_is_variant_part (type, i))
|
||
{
|
||
comma_needed =
|
||
print_variant_part (type, i, valaddr,
|
||
stream, format, recurse, pretty, comma_needed,
|
||
outer_type, outer_valaddr);
|
||
continue;
|
||
}
|
||
|
||
if (comma_needed)
|
||
fprintf_filtered (stream, ", ");
|
||
comma_needed = 1;
|
||
|
||
if (pretty)
|
||
{
|
||
fprintf_filtered (stream, "\n");
|
||
print_spaces_filtered (2 + 2 * recurse, stream);
|
||
}
|
||
else
|
||
{
|
||
wrap_here (n_spaces (2 + 2 * recurse));
|
||
}
|
||
if (inspect_it)
|
||
{
|
||
if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR)
|
||
fputs_filtered ("\"( ptr \"", stream);
|
||
else
|
||
fputs_filtered ("\"( nodef \"", stream);
|
||
fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
|
||
language_cplus, DMGL_NO_OPTS);
|
||
fputs_filtered ("\" \"", stream);
|
||
fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
|
||
language_cplus, DMGL_NO_OPTS);
|
||
fputs_filtered ("\") \"", stream);
|
||
}
|
||
else
|
||
{
|
||
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 (TYPE_CPLUS_SPECIFIC (type) != NULL
|
||
&& 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);
|
||
|
||
adjust_type_signedness (TYPE_FIELD_TYPE (type, i));
|
||
v = ada_value_primitive_packed_val (NULL, valaddr,
|
||
bit_pos / HOST_CHAR_BIT,
|
||
bit_pos % HOST_CHAR_BIT,
|
||
bit_size,
|
||
TYPE_FIELD_TYPE (type, i));
|
||
val_print (TYPE_FIELD_TYPE (type, i), value_contents (v), 0, 0,
|
||
stream, format, 0, recurse + 1, pretty);
|
||
}
|
||
}
|
||
else
|
||
ada_val_print (TYPE_FIELD_TYPE (type, i),
|
||
valaddr + TYPE_FIELD_BITPOS (type, i) / HOST_CHAR_BIT,
|
||
0, 0, stream, format, 0, recurse + 1, pretty);
|
||
annotate_field_end ();
|
||
}
|
||
|
||
return comma_needed;
|
||
}
|