gdb/d-valprint.c - gdb

Functions defined

Source code

  1. /* Support for printing D values for GDB, the GNU debugger.

  3.    Copyright (C) 2008-2015 Free Software Foundation, Inc.

  5.    This file is part of GDB.

  7.    This program is free software; you can redistribute it and/or modify
  8.    it under the terms of the GNU General Public License as published by
  9.    the Free Software Foundation; either version 3 of the License, or
  10.    (at your option) any later version.

  12.    This program is distributed in the hope that it will be useful,
  13.    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14.    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15.    GNU General Public License for more details.

  17.    You should have received a copy of the GNU General Public License
  18.    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

  20. #include "defs.h"
  21. #include "gdbtypes.h"
  22. #include "gdbcore.h"
  23. #include "d-lang.h"
  24. #include "c-lang.h"

  26. /* Assuming that TYPE is a TYPE_CODE_STRUCT, verify that TYPE is a
  27.    dynamic array, and then print its value to STREAM.  Return zero if
  28.    TYPE is a dynamic array, non-zero otherwise.  */

  30. static int
  31. ‌dynamic_array_type (struct type *type, const gdb_byte *valaddr,
  32.                     int embedded_offset, CORE_ADDR address,
  33.                     struct ui_file *stream, int recurse,
  34.                     const struct value *val,
  35.                     const struct value_print_options *options)
  36. {
  37.   if (TYPE_NFIELDS (type) == 2
  38.       && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_INT
  39.       && strcmp (TYPE_FIELD_NAME (type, 0), "length") == 0
  40.       && strcmp (TYPE_FIELD_NAME (type, 1), "ptr") == 0
  41.       && !value_bits_any_optimized_out (val,
  42.                                         TARGET_CHAR_BIT * embedded_offset,
  43.                                         TARGET_CHAR_BIT * TYPE_LENGTH (type)))
  44.     {
  45.       CORE_ADDR addr;
  46.       struct type *elttype;
  47.       struct type *true_type;
  48.       struct type *ptr_type;
  49.       struct value *ival;
  50.       int length;

  52.       length = unpack_field_as_long (type, valaddr + embedded_offset, 0);

  54.       ptr_type = TYPE_FIELD_TYPE (type, 1);
  55.       elttype = check_typedef (TYPE_TARGET_TYPE (ptr_type));
  56.       addr = unpack_pointer (ptr_type,
  57.                              valaddr + TYPE_FIELD_BITPOS (type, 1) / 8
  58.                              + embedded_offset);
  59.       true_type = check_typedef (elttype);

  61.       true_type = lookup_array_range_type (true_type, 0, length - 1);
  62.       ival = value_at (true_type, addr);
  63.       true_type = value_type (ival);

  65.       d_val_print (true_type,
  66.                    value_contents_for_printing (ival),
  67.                    value_embedded_offset (ival), addr,
  68.                    stream, recurse + 1, ival, options);
  69.       return 0;
  70.     }
  71.   return 1;
  72. }

  74. /* Implements the la_val_print routine for language D.  */
  75. void
  76. ‌d_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset,
  77.              CORE_ADDR address, struct ui_file *stream, int recurse,
  78.              const struct value *val,
  79.              const struct value_print_options *options)
  80. {
  81.   int ret;

  83.   CHECK_TYPEDEF (type);
  84.   switch (TYPE_CODE (type))
  85.     {
  86.       case TYPE_CODE_STRUCT:
  87.         ret = dynamic_array_type (type, valaddr, embedded_offset, address,
  88.                                   stream, recurse, val, options);
  89.         if (ret == 0)
  90.           break;
  91.       default:
  92.         c_val_print (type, valaddr, embedded_offset, address, stream,
  93.                      recurse, val, options);
  94.     }
  95. }