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Filename : start-packed.h
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/* -*- Mode: C; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
   Copyright (C) 2009 Red Hat, Inc.

   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions are
   met:

       * Redistributions of source code must retain the above copyright
         notice, this list of conditions and the following disclaimer.
       * Redistributions in binary form must reproduce the above copyright
         notice, this list of conditions and the following disclaimer in
         the documentation and/or other materials provided with the
         distribution.
       * Neither the name of the copyright holder nor the names of its
         contributors may be used to endorse or promote products derived
         from this software without specific prior written permission.

   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS
   IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
   PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/* Ideally this should all have been macros in a common headers, but
 * its not possible to put pragmas into macros, so we have to use
 * include magic.
 *
 * Use it like this:
 *
 * #include <spice/start-packed.h>
 *
 * typedef struct SPICE_ATTR_PACKED {
 *    ...
 * } Type;
 *
 * #include <spice/end-packed.h>
 *
 */

#ifdef __GNUC__

#define SPICE_ATTR_PACKED __attribute__ ((__packed__))
#define SPICE_ATTR_ALIGNED(n) __attribute__ ((__aligned__ (n)))

#ifdef __MINGW32__
#pragma pack(push,1)
#endif

#else

#pragma pack(push)
#pragma pack(1)
#define SPICE_ATTR_PACKED
#define SPICE_ATTR_ALIGNED(n) __declspec (align (n))
#pragma warning(disable:4200)
#pragma warning(disable:4103)

#endif