lwbt/btarch.h

   1 /**
   2  * \defgroup uiparch Architecture specific uIP functions
   3  * @{
   4  *
   5  * The functions in the architecture specific module implement the IP
   6  * check sum and 32-bit additions.
   7  *
   8  * The IP checksum calculation is the most computationally expensive
   9  * operation in the TCP/IP stack and it therefore pays off to
  10  * implement this in efficient assembler. The purpose of the uip-arch
  11  * module is to let the checksum functions to be implemented in
  12  * architecture specific assembler.
  13  *
  14  */
  15
  16 /**
  17  * \file
  18  * Declarations of architecture specific functions.
  19  * \author Adam Dunkels <adam@dunkels.com>
  20  */
  21
  22 /*
  23  * Copyright (c) 2001, Adam Dunkels.
  24  * All rights reserved.
  25  *
  26  * Redistribution and use in source and binary forms, with or without
  27  * modification, are permitted provided that the following conditions
  28  * are met:
  29  * 1. Redistributions of source code must retain the above copyright
  30  *    notice, this list of conditions and the following disclaimer.
  31  * 2. Redistributions in binary form must reproduce the above copyright
  32  *    notice, this list of conditions and the following disclaimer in the
  33  *    documentation and/or other materials provided with the distribution.
  34  * 3. The name of the author may not be used to endorse or promote
  35  *    products derived from this software without specific prior
  36  *    written permission.
  37  *
  38  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
  39  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  40  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  41  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  42  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  43  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  44  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  45  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  46  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  47  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  48  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  49  *
  50  * This file is part of the lwBT stack.
  51  *
  52  *
  53  */
  54
  55 #ifndef __BT_ARCH_H__
  56 #define __BT_ARCH_H__
  57
  58 #include "bt.h"
  59 #include "asm.h"
  60 #include "processor.h"
  61
  62 #define MEM_ALIGNMENT                   4
  63 #define MEM_ALIGN(mem)                  ((void*)(((u32_t)(mem)+MEM_ALIGNMENT-1)&~(u32_t)(MEM_ALIGNMENT-1)))
  64 #define MEM_ALIGN_SIZE(size)    (((size)+MEM_ALIGNMENT-1)&~(u32_t)(MEM_ALIGNMENT-1))
  65
  66
  67 #if BYTE_ORDER == BIG_ENDIAN
  68         #ifndef htole16
  69                 #define htole16         bswap16
  70         #endif
  71         #ifndef htole32
  72                 #define htole32         bswap32
  73         #endif
  74         #ifndef htole64
  75                 #define htole64         bswap64
  76         #endif
  77         #ifndef le16toh
  78                 #define le16toh         bswap16
  79         #endif
  80         #ifndef le32toh
  81                 #define le32toh         bswap32
  82         #endif
  83         #ifndef le642toh
  84                 #define le64toh         bswap64
  85         #endif
  86         #ifndef htons
  87                 #define htons(x)        (x)
  88         #endif
  89         #ifndef htonl
  90                 #define htonl(x)        (x)
  91         #endif
  92         #ifndef ntohl
  93                 #define ntohl(x)        (x)
  94         #endif
  95         #ifndef ntohs
  96                 #define ntohs(x)        (x)
  97         #endif
  98 #else
  99         #ifndef htole16
 100                 #define htole16
 101         #endif
 102         #ifndef htole32
 103                 #define htole32
 104         #endif
 105         #ifndef le16toh
 106                 #define le16toh
 107         #endif
 108         #ifndef le32toh
 109                 #define le32toh
 110         #endif
 111 #endif
 112
 113 #if LIBC_MEMFUNCREPLACE
 114 static __inline__ void __memcpy(void *dest,const void *src,s32_t len)
 115 {
 116         u8_t *dest0 = (u8_t*)dest;
 117         u8_t *src0 = (u8_t*)src;
 118
 119         while(len--) {
 120                 *dest0++ = *src0++;
 121         }
 122 }
 123
 124 static __inline__ void __memset(void *dest,s32_t c,s32_t len)
 125 {
 126         u8_t *dest0 = (u8_t*)dest;
 127
 128         while(len--) {
 129                 *dest0++ = (s8_t)c;
 130         }
 131 }
 132
 133 #define MEMCPY                          __memcpy
 134 #define MEMSET                          __memset
 135 #else
 136 #define MEMCPY                          memcpy
 137 #define MEMSET                          memset
 138 #endif
 139
 140 #if LOGGING == 1
 141 #include <stdio.h>
 142 #define LOG(fmt, ...) fprintf(stderr, "[BTLOG] " __FILE__ ":%i: " fmt "\n", __LINE__, ##__VA_ARGS__)
 143 #else
 144 #define LOG(fmt, ...)
 145 #endif /* LOGGING == 1 */
 146
 147 #if ERRORING == 1
 148 #include <stdio.h>
 149 #define ERROR(fmt,...) fprintf(stderr, "[BTERR] " __FILE__ ":%i: " fmt "\n", __LINE__, ##__VA_ARGS__)
 150 #else
 151 #define ERROR(fmt, ...)
 152 #endif /* ERRORING == 1 */
 153
 154 /** @} */
 155
 156 #endif /* __UIP_ARCH_H__ */