mirror of
https://github.com/ep00ch/lwip-contrib-mac.git
synced 2024-10-30 18:28:43 +00:00
74 lines
2.8 KiB
C
74 lines
2.8 KiB
C
/*
|
|
* Copyright (c) 2001, Swedish Institute of Computer Science.
|
|
* 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. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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.
|
|
*
|
|
* This file is part of the lwIP TCP/IP stack.
|
|
*
|
|
* Author: Adam Dunkels <adam@sics.se>
|
|
*
|
|
* $Id: lib.c,v 1.1 2007/06/14 12:33:57 kieranm Exp $
|
|
*/
|
|
|
|
/* These are generic implementations of various library functions used
|
|
* throughout the lwIP code. When porting, those should be optimized
|
|
* for the particular processor architecture, preferably coded in
|
|
* assembler.
|
|
*/
|
|
|
|
#include "lwip/arch.h"
|
|
|
|
#if BYTE_ORDER == LITTLE_ENDIAN
|
|
/*-----------------------------------------------------------------------------------*/
|
|
u16_t
|
|
htons(u16_t n)
|
|
{
|
|
return ((n & 0xff) << 8) | ((n & 0xff00) >> 8);
|
|
}
|
|
/*-----------------------------------------------------------------------------------*/
|
|
u16_t
|
|
ntohs(u16_t n)
|
|
{
|
|
return htons(n);
|
|
}
|
|
/*-----------------------------------------------------------------------------------*/
|
|
u32_t
|
|
htonl(u32_t n)
|
|
{
|
|
return ((n & 0xff) << 24) |
|
|
((n & 0xff00) << 8) |
|
|
((n & 0xff0000) >> 8) |
|
|
((n & 0xff000000) >> 24);
|
|
}
|
|
/*-----------------------------------------------------------------------------------*/
|
|
u32_t
|
|
ntohl(u32_t n)
|
|
{
|
|
return htonl(n);
|
|
}
|
|
/*-----------------------------------------------------------------------------------*/
|
|
#endif /* BYTE_ORDER == LITTLE_ENDIAN */
|