endian.h

来自「Ibmstb02500 miniboot 源码」· C头文件 代码 · 共 65 行

/* openbios/include/machine/endian.h, redbios, redbios_iii_1.0 3/23/98 11:41:30 */
/*-----------------------------------------------------------------------------+
|
|       This source code has been made available to you by IBM on an AS-IS
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|       copying it, modifying it, compiling it, and redistributing it either
|       with or without modifications.  No license under IBM patents or
|       patent applications is to be implied by the copyright license.
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|       Any user of this software should understand that IBM cannot provide
|       technical support for this software and will not be responsible for
|       any consequences resulting from the use of this software.
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|       Any person who transfers this source code or any derivative work
|       must include the IBM copyright notice, this paragraph, and the
|       preceding two paragraphs in the transferred software.
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|       COPYRIGHT   I B M   CORPORATION 1995
|       LICENSED MATERIAL  -  PROGRAM PROPERTY OF I B M
+-----------------------------------------------------------------------------*/
/*-----------------------------------------------------------------------------+
|
|  File Name:   endian.h
|
|  Function:    Machine dependent byte order defines.
|
|  Author:      Maciej Tyrlik.
|
|  Change Activity-
|
|  Date        Description of Change                                       BY
|  ---------   ---------------------                                       ---
|  11-Jan-93   Created                                                     MPT
|  26-May-94   1.00 first version after code review                        MPT
|
+-----------------------------------------------------------------------------*/

#ifndef _machparam_endian_h_
#define _machparam_endian_h_

/*-----------------------------------------------------------------------------+
| POWER architecture uses BIG_ENDIAN byte ordering.  Most significant byte
| first.
+-----------------------------------------------------------------------------*/
#ifndef BIG_ENDIAN
#define BIG_ENDIAN      4321
#endif

/*-----------------------------------------------------------------------------+
| Network to host translation macros.
+-----------------------------------------------------------------------------*/
#if BYTE_ORDER == BIG_ENDIAN
        #define ntohl(x)        (x)
        #define ntohs(x)        (x)
        #define htonl(x)        (x)
        #define htons(x)        (x)
        #define NTOHL(x)        (x)
        #define NTOHS(x)        (x)
        #define HTONL(x)        (x)
        #define HTONS(x)        (x)
#endif

#endif /* _machparam_endian_h_ */