1 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ 2 /* dbus-marshal-basic.h Marshalling routines for basic (primitive) types 3 * 4 * Copyright (C) 2002 CodeFactory AB 5 * Copyright (C) 2004, 2005 Red Hat, Inc. 6 * 7 * Licensed under the Academic Free License version 2.1 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 22 * 23 */ 24 25 #ifndef DBUS_MARSHAL_BASIC_H 26 #define DBUS_MARSHAL_BASIC_H 27 28 #ifdef HAVE_BYTESWAP_H 29 #include <byteswap.h> 30 #endif 31 32 #include <dbus/dbus-protocol.h> 33 #include <dbus/dbus-types.h> 34 #include <dbus/dbus-arch-deps.h> 35 #include <dbus/dbus-string.h> 36 37 #ifdef WORDS_BIGENDIAN 38 #define DBUS_COMPILER_BYTE_ORDER DBUS_BIG_ENDIAN 39 #else 40 #define DBUS_COMPILER_BYTE_ORDER DBUS_LITTLE_ENDIAN 41 #endif 42 43 #ifdef HAVE_BYTESWAP_H 44 #define DBUS_UINT16_SWAP_LE_BE_CONSTANT(val) bswap_16(val) 45 #define DBUS_UINT32_SWAP_LE_BE_CONSTANT(val) bswap_32(val) 46 #else /* HAVE_BYTESWAP_H */ 47 48 #define DBUS_UINT16_SWAP_LE_BE_CONSTANT(val) ((dbus_uint16_t) ( \ 49 (dbus_uint16_t) ((dbus_uint16_t) (val) >> 8) | \ 50 (dbus_uint16_t) ((dbus_uint16_t) (val) << 8))) 51 52 #define DBUS_UINT32_SWAP_LE_BE_CONSTANT(val) ((dbus_uint32_t) ( \ 53 (((dbus_uint32_t) (val) & (dbus_uint32_t) 0x000000ffU) << 24) | \ 54 (((dbus_uint32_t) (val) & (dbus_uint32_t) 0x0000ff00U) << 8) | \ 55 (((dbus_uint32_t) (val) & (dbus_uint32_t) 0x00ff0000U) >> 8) | \ 56 (((dbus_uint32_t) (val) & (dbus_uint32_t) 0xff000000U) >> 24))) 57 58 #endif /* HAVE_BYTESWAP_H */ 59 60 #ifdef HAVE_BYTESWAP_H 61 #define DBUS_UINT64_SWAP_LE_BE_CONSTANT(val) bswap_64(val) 62 #else /* HAVE_BYTESWAP_H */ 63 64 #define DBUS_UINT64_SWAP_LE_BE_CONSTANT(val) ((dbus_uint64_t) ( \ 65 (((dbus_uint64_t) (val) & \ 66 (dbus_uint64_t) DBUS_UINT64_CONSTANT (0x00000000000000ff)) << 56) | \ 67 (((dbus_uint64_t) (val) & \ 68 (dbus_uint64_t) DBUS_UINT64_CONSTANT (0x000000000000ff00)) << 40) | \ 69 (((dbus_uint64_t) (val) & \ 70 (dbus_uint64_t) DBUS_UINT64_CONSTANT (0x0000000000ff0000)) << 24) | \ 71 (((dbus_uint64_t) (val) & \ 72 (dbus_uint64_t) DBUS_UINT64_CONSTANT (0x00000000ff000000)) << 8) | \ 73 (((dbus_uint64_t) (val) & \ 74 (dbus_uint64_t) DBUS_UINT64_CONSTANT (0x000000ff00000000)) >> 8) | \ 75 (((dbus_uint64_t) (val) & \ 76 (dbus_uint64_t) DBUS_UINT64_CONSTANT (0x0000ff0000000000)) >> 24) | \ 77 (((dbus_uint64_t) (val) & \ 78 (dbus_uint64_t) DBUS_UINT64_CONSTANT (0x00ff000000000000)) >> 40) | \ 79 (((dbus_uint64_t) (val) & \ 80 (dbus_uint64_t) DBUS_UINT64_CONSTANT (0xff00000000000000)) >> 56))) 81 82 #endif /* HAVE_BYTESWAP_H */ 83 84 #define DBUS_UINT16_SWAP_LE_BE(val) (DBUS_UINT16_SWAP_LE_BE_CONSTANT (val)) 85 #define DBUS_INT16_SWAP_LE_BE(val) ((dbus_int16_t)DBUS_UINT16_SWAP_LE_BE_CONSTANT (val)) 86 87 #define DBUS_UINT32_SWAP_LE_BE(val) (DBUS_UINT32_SWAP_LE_BE_CONSTANT (val)) 88 #define DBUS_INT32_SWAP_LE_BE(val) ((dbus_int32_t)DBUS_UINT32_SWAP_LE_BE_CONSTANT (val)) 89 90 #define DBUS_UINT64_SWAP_LE_BE(val) (DBUS_UINT64_SWAP_LE_BE_CONSTANT (val)) 91 #define DBUS_INT64_SWAP_LE_BE(val) ((dbus_int64_t)DBUS_UINT64_SWAP_LE_BE_CONSTANT (val)) 92 93 #ifdef WORDS_BIGENDIAN 94 95 # define DBUS_INT16_TO_BE(val) ((dbus_int16_t) (val)) 96 # define DBUS_UINT16_TO_BE(val) ((dbus_uint16_t) (val)) 97 # define DBUS_INT16_TO_LE(val) (DBUS_INT16_SWAP_LE_BE (val)) 98 # define DBUS_UINT16_TO_LE(val) (DBUS_UINT16_SWAP_LE_BE (val)) 99 # define DBUS_INT32_TO_BE(val) ((dbus_int32_t) (val)) 100 # define DBUS_UINT32_TO_BE(val) ((dbus_uint32_t) (val)) 101 # define DBUS_INT32_TO_LE(val) (DBUS_INT32_SWAP_LE_BE (val)) 102 # define DBUS_UINT32_TO_LE(val) (DBUS_UINT32_SWAP_LE_BE (val)) 103 # define DBUS_INT64_TO_BE(val) ((dbus_int64_t) (val)) 104 # define DBUS_UINT64_TO_BE(val) ((dbus_uint64_t) (val)) 105 # define DBUS_INT64_TO_LE(val) (DBUS_INT64_SWAP_LE_BE (val)) 106 # define DBUS_UINT64_TO_LE(val) (DBUS_UINT64_SWAP_LE_BE (val)) 107 108 #else /* WORDS_BIGENDIAN */ 109 110 # define DBUS_INT16_TO_LE(val) ((dbus_int16_t) (val)) 111 # define DBUS_UINT16_TO_LE(val) ((dbus_uint16_t) (val)) 112 # define DBUS_INT16_TO_BE(val) ((dbus_int16_t) DBUS_UINT16_SWAP_LE_BE (val)) 113 # define DBUS_UINT16_TO_BE(val) (DBUS_UINT16_SWAP_LE_BE (val)) 114 # define DBUS_INT32_TO_LE(val) ((dbus_int32_t) (val)) 115 # define DBUS_UINT32_TO_LE(val) ((dbus_uint32_t) (val)) 116 # define DBUS_INT32_TO_BE(val) ((dbus_int32_t) DBUS_UINT32_SWAP_LE_BE (val)) 117 # define DBUS_UINT32_TO_BE(val) (DBUS_UINT32_SWAP_LE_BE (val)) 118 # define DBUS_INT64_TO_LE(val) ((dbus_int64_t) (val)) 119 # define DBUS_UINT64_TO_LE(val) ((dbus_uint64_t) (val)) 120 # define DBUS_INT64_TO_BE(val) ((dbus_int64_t) DBUS_UINT64_SWAP_LE_BE (val)) 121 # define DBUS_UINT64_TO_BE(val) (DBUS_UINT64_SWAP_LE_BE (val)) 122 #endif 123 124 /* The transformation is symmetric, so the FROM just maps to the TO. */ 125 #define DBUS_INT16_FROM_LE(val) (DBUS_INT16_TO_LE (val)) 126 #define DBUS_UINT16_FROM_LE(val) (DBUS_UINT16_TO_LE (val)) 127 #define DBUS_INT16_FROM_BE(val) (DBUS_INT16_TO_BE (val)) 128 #define DBUS_UINT16_FROM_BE(val) (DBUS_UINT16_TO_BE (val)) 129 #define DBUS_INT32_FROM_LE(val) (DBUS_INT32_TO_LE (val)) 130 #define DBUS_UINT32_FROM_LE(val) (DBUS_UINT32_TO_LE (val)) 131 #define DBUS_INT32_FROM_BE(val) (DBUS_INT32_TO_BE (val)) 132 #define DBUS_UINT32_FROM_BE(val) (DBUS_UINT32_TO_BE (val)) 133 #define DBUS_INT64_FROM_LE(val) (DBUS_INT64_TO_LE (val)) 134 #define DBUS_UINT64_FROM_LE(val) (DBUS_UINT64_TO_LE (val)) 135 #define DBUS_INT64_FROM_BE(val) (DBUS_INT64_TO_BE (val)) 136 #define DBUS_UINT64_FROM_BE(val) (DBUS_UINT64_TO_BE (val)) 137 138 #ifdef DBUS_DISABLE_ASSERT 139 #define _dbus_unpack_uint16(byte_order, data) \ 140 (((byte_order) == DBUS_LITTLE_ENDIAN) ? \ 141 DBUS_UINT16_FROM_LE (*(dbus_uint16_t*)(data)) : \ 142 DBUS_UINT16_FROM_BE (*(dbus_uint16_t*)(data))) 143 144 #define _dbus_unpack_uint32(byte_order, data) \ 145 (((byte_order) == DBUS_LITTLE_ENDIAN) ? \ 146 DBUS_UINT32_FROM_LE (*(dbus_uint32_t*)(data)) : \ 147 DBUS_UINT32_FROM_BE (*(dbus_uint32_t*)(data))) 148 #endif 149 150 #ifndef _dbus_unpack_uint16 151 DBUS_PRIVATE_EXPORT 152 dbus_uint16_t _dbus_unpack_uint16 (int byte_order, 153 const unsigned char *data); 154 #endif 155 156 void _dbus_pack_uint32 (dbus_uint32_t value, 157 int byte_order, 158 unsigned char *data); 159 #ifndef _dbus_unpack_uint32 160 DBUS_PRIVATE_EXPORT 161 dbus_uint32_t _dbus_unpack_uint32 (int byte_order, 162 const unsigned char *data); 163 #endif 164 165 dbus_bool_t _dbus_marshal_set_basic (DBusString *str, 166 int pos, 167 int type, 168 const void *value, 169 int byte_order, 170 int *old_end_pos, 171 int *new_end_pos); 172 dbus_bool_t _dbus_marshal_write_basic (DBusString *str, 173 int insert_at, 174 int type, 175 const void *value, 176 int byte_order, 177 int *pos_after); 178 dbus_bool_t _dbus_marshal_write_fixed_multi (DBusString *str, 179 int insert_at, 180 int element_type, 181 const void *value, 182 int n_elements, 183 int byte_order, 184 int *pos_after); 185 void _dbus_marshal_read_basic (const DBusString *str, 186 int pos, 187 int type, 188 void *value, 189 int byte_order, 190 int *new_pos); 191 void _dbus_marshal_read_fixed_multi (const DBusString *str, 192 int pos, 193 int element_type, 194 void *value, 195 int n_elements, 196 int byte_order, 197 int *new_pos); 198 void _dbus_marshal_skip_basic (const DBusString *str, 199 int type, 200 int byte_order, 201 int *pos); 202 void _dbus_marshal_skip_array (const DBusString *str, 203 int element_type, 204 int byte_order, 205 int *pos); 206 DBUS_PRIVATE_EXPORT 207 void _dbus_marshal_set_uint32 (DBusString *str, 208 int pos, 209 dbus_uint32_t value, 210 int byte_order); 211 DBUS_PRIVATE_EXPORT 212 dbus_uint32_t _dbus_marshal_read_uint32 (const DBusString *str, 213 int pos, 214 int byte_order, 215 int *new_pos); 216 int _dbus_type_get_alignment (int typecode); 217 DBUS_PRIVATE_EXPORT 218 const char* _dbus_type_to_string (int typecode); 219 220 DBUS_PRIVATE_EXPORT 221 int _dbus_first_type_in_signature (const DBusString *str, 222 int pos); 223 224 int _dbus_first_type_in_signature_c_str (const char *str, 225 int pos); 226 227 void _dbus_swap_array (unsigned char *data, 228 int n_elements, 229 int alignment); 230 231 #endif /* DBUS_MARSHAL_BASIC_H */ 232