1 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2 /* dbus-marshal-basic.h Marshalling routines for basic (primitive) types
4 * Copyright (C) 2002 CodeFactory AB
5 * Copyright (C) 2004, 2005 Red Hat, Inc.
7 * Licensed under the Academic Free License version 2.1
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.
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.
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
25 #ifndef DBUS_MARSHAL_BASIC_H
26 #define DBUS_MARSHAL_BASIC_H
28 #ifdef HAVE_BYTESWAP_H
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>
37 #ifdef WORDS_BIGENDIAN
38 #define DBUS_COMPILER_BYTE_ORDER DBUS_BIG_ENDIAN
40 #define DBUS_COMPILER_BYTE_ORDER DBUS_LITTLE_ENDIAN
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 */
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)))
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)))
58 #endif /* HAVE_BYTESWAP_H */
60 #ifdef DBUS_HAVE_INT64
62 #ifdef HAVE_BYTESWAP_H
63 #define DBUS_UINT64_SWAP_LE_BE_CONSTANT(val) bswap_64(val)
64 #else /* HAVE_BYTESWAP_H */
66 #define DBUS_UINT64_SWAP_LE_BE_CONSTANT(val) ((dbus_uint64_t) ( \
67 (((dbus_uint64_t) (val) & \
68 (dbus_uint64_t) DBUS_UINT64_CONSTANT (0x00000000000000ff)) << 56) | \
69 (((dbus_uint64_t) (val) & \
70 (dbus_uint64_t) DBUS_UINT64_CONSTANT (0x000000000000ff00)) << 40) | \
71 (((dbus_uint64_t) (val) & \
72 (dbus_uint64_t) DBUS_UINT64_CONSTANT (0x0000000000ff0000)) << 24) | \
73 (((dbus_uint64_t) (val) & \
74 (dbus_uint64_t) DBUS_UINT64_CONSTANT (0x00000000ff000000)) << 8) | \
75 (((dbus_uint64_t) (val) & \
76 (dbus_uint64_t) DBUS_UINT64_CONSTANT (0x000000ff00000000)) >> 8) | \
77 (((dbus_uint64_t) (val) & \
78 (dbus_uint64_t) DBUS_UINT64_CONSTANT (0x0000ff0000000000)) >> 24) | \
79 (((dbus_uint64_t) (val) & \
80 (dbus_uint64_t) DBUS_UINT64_CONSTANT (0x00ff000000000000)) >> 40) | \
81 (((dbus_uint64_t) (val) & \
82 (dbus_uint64_t) DBUS_UINT64_CONSTANT (0xff00000000000000)) >> 56)))
83 #endif /* DBUS_HAVE_INT64 */
85 #endif /* HAVE_BYTESWAP_H */
87 #define DBUS_UINT16_SWAP_LE_BE(val) (DBUS_UINT16_SWAP_LE_BE_CONSTANT (val))
88 #define DBUS_INT16_SWAP_LE_BE(val) ((dbus_int16_t)DBUS_UINT16_SWAP_LE_BE_CONSTANT (val))
90 #define DBUS_UINT32_SWAP_LE_BE(val) (DBUS_UINT32_SWAP_LE_BE_CONSTANT (val))
91 #define DBUS_INT32_SWAP_LE_BE(val) ((dbus_int32_t)DBUS_UINT32_SWAP_LE_BE_CONSTANT (val))
93 #ifdef DBUS_HAVE_INT64
94 # define DBUS_UINT64_SWAP_LE_BE(val) (DBUS_UINT64_SWAP_LE_BE_CONSTANT (val))
95 # define DBUS_INT64_SWAP_LE_BE(val) ((dbus_int64_t)DBUS_UINT64_SWAP_LE_BE_CONSTANT (val))
96 #endif /* DBUS_HAVE_INT64 */
98 #ifdef WORDS_BIGENDIAN
100 # define DBUS_INT16_TO_BE(val) ((dbus_int16_t) (val))
101 # define DBUS_UINT16_TO_BE(val) ((dbus_uint16_t) (val))
102 # define DBUS_INT16_TO_LE(val) (DBUS_INT16_SWAP_LE_BE (val))
103 # define DBUS_UINT16_TO_LE(val) (DBUS_UINT16_SWAP_LE_BE (val))
104 # define DBUS_INT32_TO_BE(val) ((dbus_int32_t) (val))
105 # define DBUS_UINT32_TO_BE(val) ((dbus_uint32_t) (val))
106 # define DBUS_INT32_TO_LE(val) (DBUS_INT32_SWAP_LE_BE (val))
107 # define DBUS_UINT32_TO_LE(val) (DBUS_UINT32_SWAP_LE_BE (val))
108 # ifdef DBUS_HAVE_INT64
109 # define DBUS_INT64_TO_BE(val) ((dbus_int64_t) (val))
110 # define DBUS_UINT64_TO_BE(val) ((dbus_uint64_t) (val))
111 # define DBUS_INT64_TO_LE(val) (DBUS_INT64_SWAP_LE_BE (val))
112 # define DBUS_UINT64_TO_LE(val) (DBUS_UINT64_SWAP_LE_BE (val))
113 # endif /* DBUS_HAVE_INT64 */
115 #else /* WORDS_BIGENDIAN */
117 # define DBUS_INT16_TO_LE(val) ((dbus_int16_t) (val))
118 # define DBUS_UINT16_TO_LE(val) ((dbus_uint16_t) (val))
119 # define DBUS_INT16_TO_BE(val) ((dbus_int16_t) DBUS_UINT16_SWAP_LE_BE (val))
120 # define DBUS_UINT16_TO_BE(val) (DBUS_UINT16_SWAP_LE_BE (val))
121 # define DBUS_INT32_TO_LE(val) ((dbus_int32_t) (val))
122 # define DBUS_UINT32_TO_LE(val) ((dbus_uint32_t) (val))
123 # define DBUS_INT32_TO_BE(val) ((dbus_int32_t) DBUS_UINT32_SWAP_LE_BE (val))
124 # define DBUS_UINT32_TO_BE(val) (DBUS_UINT32_SWAP_LE_BE (val))
125 # ifdef DBUS_HAVE_INT64
126 # define DBUS_INT64_TO_LE(val) ((dbus_int64_t) (val))
127 # define DBUS_UINT64_TO_LE(val) ((dbus_uint64_t) (val))
128 # define DBUS_INT64_TO_BE(val) ((dbus_int64_t) DBUS_UINT64_SWAP_LE_BE (val))
129 # define DBUS_UINT64_TO_BE(val) (DBUS_UINT64_SWAP_LE_BE (val))
130 # endif /* DBUS_HAVE_INT64 */
133 /* The transformation is symmetric, so the FROM just maps to the TO. */
134 #define DBUS_INT16_FROM_LE(val) (DBUS_INT16_TO_LE (val))
135 #define DBUS_UINT16_FROM_LE(val) (DBUS_UINT16_TO_LE (val))
136 #define DBUS_INT16_FROM_BE(val) (DBUS_INT16_TO_BE (val))
137 #define DBUS_UINT16_FROM_BE(val) (DBUS_UINT16_TO_BE (val))
138 #define DBUS_INT32_FROM_LE(val) (DBUS_INT32_TO_LE (val))
139 #define DBUS_UINT32_FROM_LE(val) (DBUS_UINT32_TO_LE (val))
140 #define DBUS_INT32_FROM_BE(val) (DBUS_INT32_TO_BE (val))
141 #define DBUS_UINT32_FROM_BE(val) (DBUS_UINT32_TO_BE (val))
142 #ifdef DBUS_HAVE_INT64
143 # define DBUS_INT64_FROM_LE(val) (DBUS_INT64_TO_LE (val))
144 # define DBUS_UINT64_FROM_LE(val) (DBUS_UINT64_TO_LE (val))
145 # define DBUS_INT64_FROM_BE(val) (DBUS_INT64_TO_BE (val))
146 # define DBUS_UINT64_FROM_BE(val) (DBUS_UINT64_TO_BE (val))
147 #endif /* DBUS_HAVE_INT64 */
149 #ifndef DBUS_HAVE_INT64
151 * An 8-byte struct you could use to access int64 without having
156 dbus_uint32_t first32; /**< first 32 bits in the 8 bytes (beware endian issues) */
157 dbus_uint32_t second32; /**< second 32 bits in the 8 bytes (beware endian issues) */
159 #endif /* DBUS_HAVE_INT64 */
162 * A simple 8-byte value union that lets you access 8 bytes as if they
163 * were various types; useful when dealing with basic types via
164 * void pointers and varargs.
168 dbus_int16_t i16; /**< as int16 */
169 dbus_uint16_t u16; /**< as int16 */
170 dbus_int32_t i32; /**< as int32 */
171 dbus_uint32_t u32; /**< as int32 */
172 #ifdef DBUS_HAVE_INT64
173 dbus_int64_t i64; /**< as int64 */
174 dbus_uint64_t u64; /**< as int64 */
176 DBus8ByteStruct u64; /**< as 8-byte-struct */
178 double dbl; /**< as double */
179 unsigned char byt; /**< as byte */
180 char *str; /**< as char* */
183 #ifdef DBUS_DISABLE_ASSERT
184 #define _dbus_unpack_uint16(byte_order, data) \
185 (((byte_order) == DBUS_LITTLE_ENDIAN) ? \
186 DBUS_UINT16_FROM_LE (*(dbus_uint16_t*)(data)) : \
187 DBUS_UINT16_FROM_BE (*(dbus_uint16_t*)(data)))
189 #define _dbus_unpack_uint32(byte_order, data) \
190 (((byte_order) == DBUS_LITTLE_ENDIAN) ? \
191 DBUS_UINT32_FROM_LE (*(dbus_uint32_t*)(data)) : \
192 DBUS_UINT32_FROM_BE (*(dbus_uint32_t*)(data)))
195 #ifndef _dbus_unpack_uint16
196 dbus_uint16_t _dbus_unpack_uint16 (int byte_order,
197 const unsigned char *data);
200 void _dbus_pack_uint32 (dbus_uint32_t value,
202 unsigned char *data);
203 #ifndef _dbus_unpack_uint32
204 dbus_uint32_t _dbus_unpack_uint32 (int byte_order,
205 const unsigned char *data);
208 dbus_bool_t _dbus_marshal_set_basic (DBusString *str,
215 dbus_bool_t _dbus_marshal_write_basic (DBusString *str,
221 dbus_bool_t _dbus_marshal_write_fixed_multi (DBusString *str,
228 void _dbus_marshal_read_basic (const DBusString *str,
234 void _dbus_marshal_read_fixed_multi (const DBusString *str,
241 void _dbus_marshal_skip_basic (const DBusString *str,
245 void _dbus_marshal_skip_array (const DBusString *str,
249 void _dbus_marshal_set_uint32 (DBusString *str,
253 dbus_uint32_t _dbus_marshal_read_uint32 (const DBusString *str,
257 int _dbus_type_get_alignment (int typecode);
258 dbus_bool_t _dbus_type_is_fixed (int typecode);
259 int _dbus_type_get_alignment (int typecode);
260 const char* _dbus_type_to_string (int typecode);
262 int _dbus_first_type_in_signature (const DBusString *str,
265 int _dbus_first_type_in_signature_c_str (const char *str,
268 void _dbus_swap_array (unsigned char *data,
272 #endif /* DBUS_MARSHAL_BASIC_H */