1 /* Support for printing D values for GDB, the GNU debugger. 2 3 Copyright (C) 2008-2012 Free Software Foundation, Inc. 4 5 This file is part of GDB. 6 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. 11 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. 16 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/>. */ 19 20 #include "defs.h" 21 #include "gdbtypes.h" 22 #include "gdbcore.h" 23 #include "d-lang.h" 24 #include "c-lang.h" 25 26 /* Assuming that TYPE is a TYPE_CODE_STRUCT, verify that TYPE is 27 a dynamic array, and then print its value to STREAM. Return 28 the number of string characters printed, or -1 if TYPE is not 29 a dynamic array. */ 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_valid (val, TARGET_CHAR_BIT * embedded_offset, 42 TARGET_CHAR_BIT * TYPE_LENGTH (type))) 43 { 44 CORE_ADDR addr; 45 struct type *elttype; 46 struct type *true_type; 47 struct type *ptr_type; 48 struct value *ival; 49 int length; 50 51 length = unpack_field_as_long (type, valaddr + embedded_offset, 0); 52 53 ptr_type = TYPE_FIELD_TYPE (type, 1); 54 elttype = check_typedef (TYPE_TARGET_TYPE (ptr_type)); 55 addr = unpack_pointer (ptr_type, 56 valaddr + TYPE_FIELD_BITPOS (type, 1) / 8 57 + embedded_offset); 58 true_type = check_typedef (elttype); 59 60 true_type = lookup_array_range_type (true_type, 0, length - 1); 61 ival = value_at (true_type, addr); 62 63 return d_val_print (true_type, 64 value_contents_for_printing (ival), 65 value_embedded_offset (ival), addr, 66 stream, recurse + 1, ival, options); 67 } 68 return -1; 69 } 70 71 /* Implements the la_val_print routine for language D. */ 72 int 73 d_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset, 74 CORE_ADDR address, struct ui_file *stream, int recurse, 75 const struct value *val, 76 const struct value_print_options *options) 77 { 78 int ret; 79 80 CHECK_TYPEDEF (type); 81 switch (TYPE_CODE (type)) 82 { 83 case TYPE_CODE_STRUCT: 84 ret = dynamic_array_type (type, valaddr, embedded_offset, address, 85 stream, recurse, val, options); 86 if (ret != -1) 87 break; 88 default: 89 ret = c_val_print (type, valaddr, embedded_offset, address, stream, 90 recurse, val, options); 91 } 92 93 return ret; 94 } 95