uip_arch.h

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/*
 * Copyright (c) 2001, Adam Dunkels.
 * 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.
 *
 *
 */

#ifndef __UIP_ARCH_H__
#define __UIP_ARCH_H__

#include "uip.h"

#define UIP_MIN(x,y)            (x)<(y)?(x):(y)

#define MEM_ALIGNMENT           4
#define MEM_ALIGN(mem)          ((void*)(((u32_t)(mem)+MEM_ALIGNMENT-1)&~(u32_t)(MEM_ALIGNMENT-1)))
#define MEM_ALIGN_SIZE(size)    (((size)+MEM_ALIGNMENT-1)&~(u32_t)(MEM_ALIGNMENT-1))

#define PACK_STRUCT_STRUCT      __attribute__((packed))
#define PACK_STRUCT_FIELD(x)    x
#define PACK_STRUCT_BEGIN
#define PACK_STRUCT_END

#ifndef htons
#define htons(x) (x)
#endif
#ifndef ntohs
#define ntohs(x) (x)
#endif
#ifndef htonl
#define htonl(x) (x)
#endif
#ifndef ntohl
#define ntohl(x) (x)
#endif

struct uip_pbuf;
struct uip_ip_addr;

u16_t uip_chksum(u16_t *buf, u32_t len);

u16_t uip_ipchksum(void *dataptr,u16_t len);

u16_t uip_ipchksum_pbuf(struct uip_pbuf *p);

u16_t uip_chksum_pseudo(struct uip_pbuf *p,struct uip_ip_addr *src,struct uip_ip_addr *dst,u8_t proto,u16_t proto_len);



extern void tcpip_tmr_needed();
#define tcp_tmr_needed      tcpip_tmr_needed

#if UIP_LIBC_MEMFUNCREPLACE
static __inline__ void uip_memcpy(void *dest,const void *src,s32_t len)
{
    u8_t *dest0 = (u8_t*)dest;
    u8_t *src0 = (u8_t*)src;

    while(len--) {
        *dest0++ = *src0++;
    }
}

static __inline__ void uip_memset(void *dest,s32_t c,s32_t len)
{
    u8_t *dest0 = (u8_t*)dest;

    while(len--) {
        *dest0++ = (s8_t)c;
    }
}

#define UIP_MEMCPY              uip_memcpy
#define UIP_MEMSET              uip_memset
#else
#define UIP_MEMCPY              memcpy
#define UIP_MEMSET              memset
#endif

#endif /* __UIP_ARCH_H__ */