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C:/proj/src/ethernut/nut/eboot/types.h

00001 #ifndef _SYS_TYPES_H_
00002 #define _SYS_TYPES_H_
00003 
00004 /*
00005  * Copyright (C) 2001-2002 by egnite Software GmbH. All rights reserved.
00006  *
00007  * Redistribution and use in source and binary forms, with or without
00008  * modification, are permitted provided that the following conditions
00009  * are met:
00010  *
00011  * 1. Redistributions of source code must retain the above copyright
00012  *    notice, this list of conditions and the following disclaimer.
00013  * 2. Redistributions in binary form must reproduce the above copyright
00014  *    notice, this list of conditions and the following disclaimer in the
00015  *    documentation and/or other materials provided with the distribution.
00016  * 3. All advertising materials mentioning features or use of this
00017  *    software must display the following acknowledgement:
00018  *
00019  *    This product includes software developed by egnite Software GmbH
00020  *    and its contributors.
00021  *
00022  * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS
00023  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00024  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
00025  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE
00026  * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
00027  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
00028  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
00029  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
00030  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00031  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
00032  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00033  * SUCH DAMAGE.
00034  *
00035  * For additional information see http://www.ethernut.de/
00036  *
00037  * -
00038  * Portions Copyright (c) 1983, 1993 by
00039  *  The Regents of the University of California.  All rights reserved.
00040  *
00041  * Redistribution and use in source and binary forms, with or without
00042  * modification, are permitted provided that the following conditions
00043  * are met:
00044  * 1. Redistributions of source code must retain the above copyright
00045  *    notice, this list of conditions and the following disclaimer.
00046  * 2. Redistributions in binary form must reproduce the above copyright
00047  *    notice, this list of conditions and the following disclaimer in the
00048  *    documentation and/or other materials provided with the distribution.
00049  * 3. All advertising materials mentioning features or use of this software
00050  *    must display the following acknowledgement:
00051  *  This product includes software developed by the University of
00052  *  California, Berkeley and its contributors.
00053  * 4. Neither the name of the University nor the names of its contributors
00054  *    may be used to endorse or promote products derived from this software
00055  *    without specific prior written permission.
00056  *
00057  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
00058  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00059  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00060  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
00061  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00062  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
00063  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00064  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00065  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
00066  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00067  * SUCH DAMAGE.
00068  */
00069 
00070 /*
00071  * $Log: types.h,v $
00072  * Revision 1.1  2002/08/01 17:34:30  harald
00073  * First check in
00074  *
00075  */
00076 
00077 /*!
00078  * \brief Nut/OS type declarations.
00079  */
00080 
00081 /*!
00082  * \weakgroup xgEBoot
00083  */
00084 /*@{*/
00085 
00086 /*! \brief Unsigned 8-bit value. */
00087 typedef unsigned char      u_char;
00088 /*! \brief Unsigned 16-bit value. */
00089 typedef unsigned short     u_short;
00090 /*! \brief Unsigned 16-bit value. */
00091 typedef unsigned int       u_int;
00092 /*! \brief Unsigned 32-bit value */
00093 typedef unsigned long      u_long;
00094 /*! \brief Unsigned 64-bit value */
00095 typedef unsigned long long u_longlong;
00096 /*! \brief Void pointer */
00097 typedef void * HANDLE;
00098 
00099 
00100 /*
00101  * Conversion of 16 bit value to network order.
00102  */
00103 static inline u_short __byte_swap2(u_short val)
00104 {
00105     asm volatile(
00106         "mov __tmp_reg__, %A0\n\t"
00107         "mov %A0, %B0\n\t"
00108         "mov %B0, __tmp_reg__\n\t"
00109         : "=r" (val)
00110         : "0" (val)
00111     );
00112     return val;
00113 }
00114 
00115 /*
00116  * Conversion of 32 bit value to network order.
00117  */
00118 static inline u_long __byte_swap4(u_long val)
00119 {
00120     asm volatile(
00121         "mov __tmp_reg__, %A0\n\t"
00122         "mov %A0, %D0\n\t"
00123         "mov %D0, __tmp_reg__\n\t"
00124         "mov __tmp_reg__, %B0\n\t"
00125         "mov %B0, %C0\n\t"
00126         "mov %C0, __tmp_reg__\n\t"
00127         : "=r" (val)
00128         : "0" (val)
00129     );
00130     return val;
00131 }
00132 
00133 /*!
00134  * \brief Convert short value from host to network byte order.
00135  */
00136 #define htons(x) __byte_swap2(x)
00137 
00138 /*!
00139  * \brief Convert long value from host to network byte order.
00140  */
00141 #define htonl(x) __byte_swap4(x)
00142 
00143 /*!
00144  * \brief Convert short value from network to host byte order.
00145  */
00146 #define ntohs(x) __byte_swap2(x)
00147 
00148 /*!
00149  * \brief Convert long value from network to host byte order.
00150  */
00151 #define ntohl(x) __byte_swap4(x)
00152 
00153 /*@}*/
00154 
00155 #endif

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