/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* dbus-marshal-basic.h Marshalling routines for basic (primitive) types
*
* Copyright (C) 2002 CodeFactory AB
* Copyright (C) 2004, 2005 Red Hat, Inc.
*
* Licensed under the Academic Free License version 2.1
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifndef DBUS_MARSHAL_BASIC_H
#define DBUS_MARSHAL_BASIC_H
#ifdef HAVE_BYTESWAP_H
#include <byteswap.h>
#endif
#include <dbus/dbus-protocol.h>
#include <dbus/dbus-types.h>
#include <dbus/dbus-arch-deps.h>
#include <dbus/dbus-string.h>
#ifdef WORDS_BIGENDIAN
#define DBUS_COMPILER_BYTE_ORDER DBUS_BIG_ENDIAN
#else
#define DBUS_COMPILER_BYTE_ORDER DBUS_LITTLE_ENDIAN
#endif
#ifdef HAVE_BYTESWAP_H
#define DBUS_UINT16_SWAP_LE_BE_CONSTANT(val) bswap_16(val)
#define DBUS_UINT32_SWAP_LE_BE_CONSTANT(val) bswap_32(val)
#else /* HAVE_BYTESWAP_H */
#define DBUS_UINT16_SWAP_LE_BE_CONSTANT(val) ((dbus_uint16_t) ( \
(dbus_uint16_t) ((dbus_uint16_t) (val) >> 8) | \
(dbus_uint16_t) ((dbus_uint16_t) (val) << 8)))
#define DBUS_UINT32_SWAP_LE_BE_CONSTANT(val) ((dbus_uint32_t) ( \
(((dbus_uint32_t) (val) & (dbus_uint32_t) 0x000000ffU) << 24) | \
(((dbus_uint32_t) (val) & (dbus_uint32_t) 0x0000ff00U) << 8) | \
(((dbus_uint32_t) (val) & (dbus_uint32_t) 0x00ff0000U) >> 8) | \
(((dbus_uint32_t) (val) & (dbus_uint32_t) 0xff000000U) >> 24)))
#endif /* HAVE_BYTESWAP_H */
#ifdef DBUS_HAVE_INT64
#ifdef HAVE_BYTESWAP_H
#define DBUS_UINT64_SWAP_LE_BE_CONSTANT(val) bswap_64(val)
#else /* HAVE_BYTESWAP_H */
#define DBUS_UINT64_SWAP_LE_BE_CONSTANT(val) ((dbus_uint64_t) ( \
(((dbus_uint64_t) (val) & \
(dbus_uint64_t) DBUS_UINT64_CONSTANT (0x00000000000000ff)) << 56) | \
(((dbus_uint64_t) (val) & \
(dbus_uint64_t) DBUS_UINT64_CONSTANT (0x000000000000ff00)) << 40) | \
(((dbus_uint64_t) (val) & \
(dbus_uint64_t) DBUS_UINT64_CONSTANT (0x0000000000ff0000)) << 24) | \
(((dbus_uint64_t) (val) & \
(dbus_uint64_t) DBUS_UINT64_CONSTANT (0x00000000ff000000)) << 8) | \
(((dbus_uint64_t) (val) & \
(dbus_uint64_t) DBUS_UINT64_CONSTANT (0x000000ff00000000)) >> 8) | \
(((dbus_uint64_t) (val) & \
(dbus_uint64_t) DBUS_UINT64_CONSTANT (0x0000ff0000000000)) >> 24) | \
(((dbus_uint64_t) (val) & \
(dbus_uint64_t) DBUS_UINT64_CONSTANT (0x00ff000000000000)) >> 40) | \
(((dbus_uint64_t) (val) & \
(dbus_uint64_t) DBUS_UINT64_CONSTANT (0xff00000000000000)) >> 56)))
#endif /* DBUS_HAVE_INT64 */
#endif /* HAVE_BYTESWAP_H */
#define DBUS_UINT16_SWAP_LE_BE(val) (DBUS_UINT16_SWAP_LE_BE_CONSTANT (val))
#define DBUS_INT16_SWAP_LE_BE(val) ((dbus_int16_t)DBUS_UINT16_SWAP_LE_BE_CONSTANT (val))
#define DBUS_UINT32_SWAP_LE_BE(val) (DBUS_UINT32_SWAP_LE_BE_CONSTANT (val))
#define DBUS_INT32_SWAP_LE_BE(val) ((dbus_int32_t)DBUS_UINT32_SWAP_LE_BE_CONSTANT (val))
#ifdef DBUS_HAVE_INT64
# define DBUS_UINT64_SWAP_LE_BE(val) (DBUS_UINT64_SWAP_LE_BE_CONSTANT (val))
# define DBUS_INT64_SWAP_LE_BE(val) ((dbus_int64_t)DBUS_UINT64_SWAP_LE_BE_CONSTANT (val))
#endif /* DBUS_HAVE_INT64 */
#ifdef WORDS_BIGENDIAN
# define DBUS_INT16_TO_BE(val) ((dbus_int16_t) (val))
# define DBUS_UINT16_TO_BE(val) ((dbus_uint16_t) (val))
# define DBUS_INT16_TO_LE(val) (DBUS_INT16_SWAP_LE_BE (val))
# define DBUS_UINT16_TO_LE(val) (DBUS_UINT16_SWAP_LE_BE (val))
# define DBUS_INT32_TO_BE(val) ((dbus_int32_t) (val))
# define DBUS_UINT32_TO_BE(val) ((dbus_uint32_t) (val))
# define DBUS_INT32_TO_LE(val) (DBUS_INT32_SWAP_LE_BE (val))
# define DBUS_UINT32_TO_LE(val) (DBUS_UINT32_SWAP_LE_BE (val))
# ifdef DBUS_HAVE_INT64
# define DBUS_INT64_TO_BE(val) ((dbus_int64_t) (val))
# define DBUS_UINT64_TO_BE(val) ((dbus_uint64_t) (val))
# define DBUS_INT64_TO_LE(val) (DBUS_INT64_SWAP_LE_BE (val))
# define DBUS_UINT64_TO_LE(val) (DBUS_UINT64_SWAP_LE_BE (val))
# endif /* DBUS_HAVE_INT64 */
#else /* WORDS_BIGENDIAN */
# define DBUS_INT16_TO_LE(val) ((dbus_int16_t) (val))
# define DBUS_UINT16_TO_LE(val) ((dbus_uint16_t) (val))
# define DBUS_INT16_TO_BE(val) ((dbus_int16_t) DBUS_UINT16_SWAP_LE_BE (val))
# define DBUS_UINT16_TO_BE(val) (DBUS_UINT16_SWAP_LE_BE (val))
# define DBUS_INT32_TO_LE(val) ((dbus_int32_t) (val))
# define DBUS_UINT32_TO_LE(val) ((dbus_uint32_t) (val))
# define DBUS_INT32_TO_BE(val) ((dbus_int32_t) DBUS_UINT32_SWAP_LE_BE (val))
# define DBUS_UINT32_TO_BE(val) (DBUS_UINT32_SWAP_LE_BE (val))
# ifdef DBUS_HAVE_INT64
# define DBUS_INT64_TO_LE(val) ((dbus_int64_t) (val))
# define DBUS_UINT64_TO_LE(val) ((dbus_uint64_t) (val))
# define DBUS_INT64_TO_BE(val) ((dbus_int64_t) DBUS_UINT64_SWAP_LE_BE (val))
# define DBUS_UINT64_TO_BE(val) (DBUS_UINT64_SWAP_LE_BE (val))
# endif /* DBUS_HAVE_INT64 */
#endif
/* The transformation is symmetric, so the FROM just maps to the TO. */
#define DBUS_INT16_FROM_LE(val) (DBUS_INT16_TO_LE (val))
#define DBUS_UINT16_FROM_LE(val) (DBUS_UINT16_TO_LE (val))
#define DBUS_INT16_FROM_BE(val) (DBUS_INT16_TO_BE (val))
#define DBUS_UINT16_FROM_BE(val) (DBUS_UINT16_TO_BE (val))
#define DBUS_INT32_FROM_LE(val) (DBUS_INT32_TO_LE (val))
#define DBUS_UINT32_FROM_LE(val) (DBUS_UINT32_TO_LE (val))
#define DBUS_INT32_FROM_BE(val) (DBUS_INT32_TO_BE (val))
#define DBUS_UINT32_FROM_BE(val) (DBUS_UINT32_TO_BE (val))
#ifdef DBUS_HAVE_INT64
# define DBUS_INT64_FROM_LE(val) (DBUS_INT64_TO_LE (val))
# define DBUS_UINT64_FROM_LE(val) (DBUS_UINT64_TO_LE (val))
# define DBUS_INT64_FROM_BE(val) (DBUS_INT64_TO_BE (val))
# define DBUS_UINT64_FROM_BE(val) (DBUS_UINT64_TO_BE (val))
#endif /* DBUS_HAVE_INT64 */
#ifndef DBUS_HAVE_INT64
/**
* An 8-byte struct you could use to access int64 without having
* int64 support
*/
typedef struct
{
dbus_uint32_t first32; /**< first 32 bits in the 8 bytes (beware endian issues) */
dbus_uint32_t second32; /**< second 32 bits in the 8 bytes (beware endian issues) */
} DBus8ByteStruct;
#endif /* DBUS_HAVE_INT64 */
/**
* A simple 8-byte value union that lets you access 8 bytes as if they
* were various types; useful when dealing with basic types via
* void pointers and varargs.
*/
typedef union
{
dbus_int16_t i16; /**< as int16 */
dbus_uint16_t u16; /**< as int16 */
dbus_int32_t i32; /**< as int32 */
dbus_uint32_t u32; /**< as int32 */
#ifdef DBUS_HAVE_INT64
dbus_int64_t i64; /**< as int64 */
dbus_uint64_t u64; /**< as int64 */
#else
DBus8ByteStruct u64; /**< as 8-byte-struct */
#endif
double dbl; /**< as double */
unsigned char byt; /**< as byte */
char *str; /**< as char* */
} DBusBasicValue;
#ifdef DBUS_DISABLE_ASSERT
#define _dbus_unpack_uint16(byte_order, data) \
(((byte_order) == DBUS_LITTLE_ENDIAN) ? \
DBUS_UINT16_FROM_LE (*(dbus_uint16_t*)(data)) : \
DBUS_UINT16_FROM_BE (*(dbus_uint16_t*)(data)))
#define _dbus_unpack_uint32(byte_order, data) \
(((byte_order) == DBUS_LITTLE_ENDIAN) ? \
DBUS_UINT32_FROM_LE (*(dbus_uint32_t*)(data)) : \
DBUS_UINT32_FROM_BE (*(dbus_uint32_t*)(data)))
#endif
#ifndef _dbus_unpack_uint16
dbus_uint16_t _dbus_unpack_uint16 (int byte_order,
const unsigned char *data);
#endif
void _dbus_pack_uint32 (dbus_uint32_t value,
int byte_order,
unsigned char *data);
#ifndef _dbus_unpack_uint32
dbus_uint32_t _dbus_unpack_uint32 (int byte_order,
const unsigned char *data);
#endif
dbus_bool_t _dbus_marshal_set_basic (DBusString *str,
int pos,
int type,
const void *value,
int byte_order,
int *old_end_pos,
int *new_end_pos);
dbus_bool_t _dbus_marshal_write_basic (DBusString *str,
int insert_at,
int type,
const void *value,
int byte_order,
int *pos_after);
dbus_bool_t _dbus_marshal_write_fixed_multi (DBusString *str,
int insert_at,
int element_type,
const void *value,
int n_elements,
int byte_order,
int *pos_after);
void _dbus_marshal_read_basic (const DBusString *str,
int pos,
int type,
void *value,
int byte_order,
int *new_pos);
void _dbus_marshal_read_fixed_multi (const DBusString *str,
int pos,
int element_type,
void *value,
int n_elements,
int byte_order,
int *new_pos);
void _dbus_marshal_skip_basic (const DBusString *str,
int type,
int byte_order,
int *pos);
void _dbus_marshal_skip_array (const DBusString *str,
int element_type,
int byte_order,
int *pos);
void _dbus_marshal_set_uint32 (DBusString *str,
int pos,
dbus_uint32_t value,
int byte_order);
dbus_uint32_t _dbus_marshal_read_uint32 (const DBusString *str,
int pos,
int byte_order,
int *new_pos);
dbus_bool_t _dbus_type_is_valid (int typecode);
int _dbus_type_get_alignment (int typecode);
dbus_bool_t _dbus_type_is_fixed (int typecode);
int _dbus_type_get_alignment (int typecode);
const char* _dbus_type_to_string (int typecode);
int _dbus_first_type_in_signature (const DBusString *str,
int pos);
int _dbus_first_type_in_signature_c_str (const char *str,
int pos);
void _dbus_swap_array (unsigned char *data,
int n_elements,
int alignment);
#endif /* DBUS_MARSHAL_BASIC_H */