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/* Support for printing D values for GDB, the GNU debugger.
Copyright (C) 2008, 2009, 2010 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 "gdbtypes.h"
#include "gdbcore.h"
#include "d-lang.h"
#include "c-lang.h"
/* Assuming that TYPE is a TYPE_CODE_STRUCT, verify that TYPE is
a dynamic array, and then print its value to STREAM. Return
the number of string characters printed, or -1 if TYPE is not
a dynamic array. */
static int
dynamic_array_type (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)
{
if (TYPE_NFIELDS (type) == 2
&& TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_INT
&& strcmp (TYPE_FIELD_NAME (type, 0), "length") == 0
&& strcmp (TYPE_FIELD_NAME (type, 1), "ptr") == 0
&& value_bits_valid (val, TARGET_CHAR_BIT * embedded_offset,
TARGET_CHAR_BIT * TYPE_LENGTH (type)))
{
CORE_ADDR addr;
struct type *elttype;
struct type *true_type;
struct type *ptr_type;
const gdb_byte *ptraddr;
struct value *val;
int length;
length = unpack_field_as_long (type, valaddr + embedded_offset, 0);
ptr_type = TYPE_FIELD_TYPE (type, 1);
elttype = check_typedef (TYPE_TARGET_TYPE (ptr_type));
addr = unpack_pointer (ptr_type,
valaddr + TYPE_FIELD_BITPOS (type, 1) / 8
+ embedded_offset);
true_type = check_typedef (elttype);
true_type = lookup_array_range_type (true_type, 0, length - 1);
val = value_at (true_type, addr);
ptraddr = value_contents (val);
return d_val_print (true_type, ptraddr, 0, addr, stream, recurse + 1,
NULL, options);
}
return -1;
}
/* Implements the la_val_print routine for language D. */
int
d_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)
{
int ret;
CHECK_TYPEDEF (type);
switch (TYPE_CODE (type))
{
case TYPE_CODE_STRUCT:
ret = dynamic_array_type (type, valaddr, embedded_offset, address,
stream, recurse, val, options);
if (ret != -1)
break;
default:
ret = c_val_print (type, valaddr, embedded_offset, address, stream,
recurse, val, options);
}
return ret;
}
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