contiki/cpu/stm32w108/uip_arch.c

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2010-10-25 09:03:38 +00:00
/*
* Copyright (c) 2010, STMicroelectronics.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
* This file is part of the uIP TCP/IP stack.
*
* $Id: uip_arch.c,v 1.1 2010/10/25 09:03:39 salvopitru Exp $
*/
/*---------------------------------------------------------------------------*/
/**
* \file
* uip_arch.c
* \author
* Salvatore Pitrulli <salvopitru@users.sourceforge.net>
*/
/*---------------------------------------------------------------------------*/
#include "net/uip.h"
#include "net/uip_arch.h"
/*-----------------------------------------------------------------------------------*/
#if UIP_TCP
void
uip_add32(u8_t *op32, u16_t op16)
{
uint32_t op32_align, uip_acc32_align;
op32_align = ((uint32_t)op32[0])<<24 | ((uint32_t)op32[1])<<16 | ((uint16_t)op32[2])<<8 | op32[3];
uip_acc32_align = op32_align + op16;
uip_acc32[3] = uip_acc32_align;
uip_acc32[2] = uip_acc32_align>>8;
uip_acc32[1] = uip_acc32_align>>16;
uip_acc32[0] = uip_acc32_align>>24;
}
#endif
/*-----------------------------------------------------------------------------------*/