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97 lines
3.1 KiB
C
97 lines
3.1 KiB
C
/* Support for printing D values for GDB, the GNU debugger.
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Copyright (C) 2008-2020 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 "defs.h"
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#include "gdbtypes.h"
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#include "gdbcore.h"
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#include "d-lang.h"
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#include "c-lang.h"
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/* Assuming that TYPE is a TYPE_CODE_STRUCT, verify that TYPE is a
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dynamic array, and then print its value to STREAM. Return zero if
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TYPE is a dynamic array, non-zero otherwise. */
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static int
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dynamic_array_type (struct type *type,
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LONGEST embedded_offset, CORE_ADDR address,
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struct ui_file *stream, int recurse,
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struct value *val,
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const struct value_print_options *options)
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{
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if (TYPE_NFIELDS (type) == 2
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&& TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_INT
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&& strcmp (TYPE_FIELD_NAME (type, 0), "length") == 0
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&& strcmp (TYPE_FIELD_NAME (type, 1), "ptr") == 0
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&& !value_bits_any_optimized_out (val,
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TARGET_CHAR_BIT * embedded_offset,
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TARGET_CHAR_BIT * TYPE_LENGTH (type)))
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{
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CORE_ADDR addr;
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struct type *elttype;
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struct type *true_type;
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struct type *ptr_type;
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struct value *ival;
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int length;
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const gdb_byte *valaddr = value_contents_for_printing (val);
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length = unpack_field_as_long (type, valaddr + embedded_offset, 0);
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ptr_type = TYPE_FIELD_TYPE (type, 1);
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elttype = check_typedef (TYPE_TARGET_TYPE (ptr_type));
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addr = unpack_pointer (ptr_type,
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valaddr + TYPE_FIELD_BITPOS (type, 1) / 8
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+ embedded_offset);
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true_type = check_typedef (elttype);
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true_type = lookup_array_range_type (true_type, 0, length - 1);
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ival = value_at (true_type, addr);
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true_type = value_type (ival);
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d_val_print (true_type,
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value_embedded_offset (ival), addr,
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stream, recurse + 1, ival, options);
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return 0;
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}
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return 1;
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}
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/* Implements the la_val_print routine for language D. */
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void
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d_val_print (struct type *type, int embedded_offset,
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CORE_ADDR address, struct ui_file *stream, int recurse,
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struct value *val,
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const struct value_print_options *options)
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{
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int ret;
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type = check_typedef (type);
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switch (TYPE_CODE (type))
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{
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case TYPE_CODE_STRUCT:
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ret = dynamic_array_type (type, embedded_offset, address,
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stream, recurse, val, options);
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if (ret == 0)
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break;
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/* Fall through. */
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default:
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c_val_print (type, embedded_offset, address, stream,
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recurse, val, options);
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}
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}
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