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/* BSDI osd_util.h,v 1.8 1998/06/03 19:14:58 karels Exp */
/*
* Copyright ( c ) 1996 - 1999 Distributed Processing Technology Corporation
* All rights reserved .
*
* Redistribution and use in source form , with or without modification , are
* permitted provided that redistributions of source code must retain the
* above copyright notice , this list of conditions and the following disclaimer .
*
* This software is provided ` as is ' by Distributed Processing Technology 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 Distributed Processing Technology 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
* interruptions ) 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 driver software , even if advised
* of the possibility of such damage .
*
*/
# ifndef __OSD_UTIL_H
# define __OSD_UTIL_H
/*File - OSD_UTIL.H
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
* Description :
*
* This file contains defines and function prototypes that are
* operating system dependent . The resources defined in this file
* are not specific to any particular application .
*
* Copyright Distributed Processing Technology , Corp .
* 140 Candace Dr .
* Maitland , Fl . 32751 USA
* Phone : ( 407 ) 830 - 5522 Fax : ( 407 ) 260 - 5366
* All Rights Reserved
*
* Author : Doug Anderson
* Date : 1 / 7 / 94
*
* Editors :
*
* Remarks :
*
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*Definitions - Defines & Constants ----------------------------------------- */
/*----------------------------- */
/* Operating system selections: */
/*----------------------------- */
/*#define _DPT_MSDOS */
/*#define _DPT_WIN_3X */
/*#define _DPT_WIN_4X */
/*#define _DPT_WIN_NT */
/*#define _DPT_NETWARE */
/*#define _DPT_OS2 */
/*#define _DPT_SCO */
/*#define _DPT_UNIXWARE */
/*#define _DPT_SOLARIS */
/*#define _DPT_NEXTSTEP */
/*#define _DPT_BANYAN */
/*-------------------------------- */
/* Include the OS specific defines */
/*-------------------------------- */
/*#define OS_SELECTION From Above List */
/*#define SEMAPHORE_T ??? */
/*#define DLL_HANDLE_T ??? */
# if (defined(KERNEL) && (defined(__FreeBSD__) || defined(__bsdi__)))
# include "i386 / isa / dpt_osd_defs.h"
# else
# include "osd_defs.h"
# endif
# ifndef DPT_UNALIGNED
# define DPT_UNALIGNED
# endif
# ifndef DPT_EXPORT
# define DPT_EXPORT
# endif
# ifndef DPT_IMPORT
# define DPT_IMPORT
# endif
# ifndef DPT_RUNTIME_IMPORT
# define DPT_RUNTIME_IMPORT DPT_IMPORT
# endif
/*--------------------- */
/* OS dependent defines */
/*--------------------- */
# if defined (_DPT_MSDOS) || defined (_DPT_WIN_3X)
# define _DPT_16_BIT
# else
# define _DPT_32_BIT
# endif
# if defined (_DPT_SCO) || defined (_DPT_UNIXWARE) || defined (_DPT_SOLARIS) || defined (_DPT_AIX) || defined (SNI_MIPS) || defined (_DPT_BSDI) || defined (_DPT_FREE_BSD) || defined(_DPT_LINUX)
# define _DPT_UNIX
# endif
# if defined (_DPT_WIN_3x) || defined (_DPT_WIN_4X) || defined (_DPT_WIN_NT) \
| | defined ( _DPT_OS2 )
# define _DPT_DLL_SUPPORT
# endif
# if !defined (_DPT_MSDOS) && !defined (_DPT_WIN_3X) && !defined (_DPT_NETWARE)
# define _DPT_PREEMPTIVE
# endif
# if !defined (_DPT_MSDOS) && !defined (_DPT_WIN_3X)
# define _DPT_MULTI_THREADED
# endif
# if !defined (_DPT_MSDOS)
# define _DPT_MULTI_TASKING
# endif
/* These exist for platforms that */
/* chunk when accessing mis-aligned */
/* data */
# if defined (SNI_MIPS) || defined (_DPT_SOLARIS)
# if defined (_DPT_BIG_ENDIAN)
# if !defined (_DPT_STRICT_ALIGN)
# define _DPT_STRICT_ALIGN
# endif
# endif
# endif
/* Determine if in C or C++ mode */
# ifdef __cplusplus
# define _DPT_CPP
# else
# define _DPT_C
# endif
/*-------------------------------------------------------------------*/
/* Under Solaris the compiler refuses to accept code like: */
/* { {"DPT"}, 0, NULL .... }, */
/* and complains about the {"DPT"} part by saying "cannot use { } */
/* to initialize char*". */
/* */
/* By defining these ugly macros we can get around this and also */
/* not have to copy and #ifdef large sections of code. I know that */
/* these macros are *really* ugly, but they should help reduce */
/* maintenance in the long run. */
/* */
/*-------------------------------------------------------------------*/
# if !defined (DPTSQO)
# if defined (_DPT_SOLARIS)
# define DPTSQO
# define DPTSQC
# else
# define DPTSQO {
# define DPTSQC }
# endif /* solaris */
# endif /* DPTSQO */
/*---------------------- */
/* OS dependent typedefs */
/*---------------------- */
# if defined (_DPT_MSDOS) || defined (_DPT_SCO)
# define BYTE unsigned char
# define WORD unsigned short
# endif
# ifndef _DPT_TYPEDEFS
# define _DPT_TYPEDEFS
typedef unsigned char uCHAR ;
typedef unsigned short uSHORT ;
typedef unsigned int uINT ;
typedef unsigned long uLONG ;
typedef union {
uCHAR u8 [ 4 ] ;
uSHORT u16 [ 2 ] ;
uLONG u32 ;
} access_U ;
# endif
# if !defined (NULL)
# define NULL 0
# endif
/*Prototypes - function ----------------------------------------------------- */
# ifdef __cplusplus
extern " C " { /* Declare all these functions as "C" functions */
# endif
/*------------------------ */
/* Byte reversal functions */
/*------------------------ */
/* Reverses the byte ordering of a 2 byte variable */
# if (!defined(osdSwap2))
uSHORT osdSwap2 ( DPT_UNALIGNED uSHORT * ) ;
# endif // !osdSwap2
/* Reverses the byte ordering of a 4 byte variable and shifts left 8 bits */
# if (!defined(osdSwap3))
uLONG osdSwap3 ( DPT_UNALIGNED uLONG * ) ;
# endif // !osdSwap3
# ifdef _DPT_NETWARE
# include "novpass.h" /* For DPT_Bswapl() prototype */
/* Inline the byte swap */
# ifdef __cplusplus
inline uLONG osdSwap4 ( uLONG * inLong ) {
return * inLong = DPT_Bswapl ( * inLong ) ;
}
# else
# define osdSwap4(inLong) DPT_Bswapl(inLong)
# endif // cplusplus
# else
/* Reverses the byte ordering of a 4 byte variable */
# if (!defined(osdSwap4))
uLONG osdSwap4 ( DPT_UNALIGNED uLONG * ) ;
# endif // !osdSwap4
/* The following functions ALWAYS swap regardless of the *
* presence of DPT_BIG_ENDIAN */
uSHORT trueSwap2 ( DPT_UNALIGNED uSHORT * ) ;
uLONG trueSwap4 ( DPT_UNALIGNED uLONG * ) ;
# endif // netware
/*-------------------------------------*
* Network order swap functions *
* *
* These functions / macros will be used *
* by the structure insert ( ) / extract ( ) *
* functions . *
*
* We will enclose all structure *
* portability modifications inside *
* # ifdefs . When we are ready , we *
* will # define DPT_PORTABLE to begin *
* using the modifications . *
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
uLONG netSwap4 ( uLONG val ) ;
# if defined (_DPT_BIG_ENDIAN)
// for big-endian we need to swap
# ifndef NET_SWAP_2
# define NET_SWAP_2(x) (((x) >> 8) | ((x) << 8))
# endif // NET_SWAP_2
# ifndef NET_SWAP_4
# define NET_SWAP_4(x) netSwap4((x))
# endif // NET_SWAP_4
# else
// for little-endian we don't need to do anything
# ifndef NET_SWAP_2
# define NET_SWAP_2(x) (x)
# endif // NET_SWAP_2
# ifndef NET_SWAP_4
# define NET_SWAP_4(x) (x)
# endif // NET_SWAP_4
# endif // big endian
/*----------------------------------- */
/* Run-time loadable module functions */
/*----------------------------------- */
/* Loads the specified run-time loadable DLL */
DLL_HANDLE_T osdLoadModule ( uCHAR * ) ;
/* Unloads the specified run-time loadable DLL */
uSHORT osdUnloadModule ( DLL_HANDLE_T ) ;
/* Returns a pointer to a function inside a run-time loadable DLL */
void * osdGetFnAddr ( DLL_HANDLE_T , uCHAR * ) ;
/*--------------------------------------- */
/* Mutually exclusive semaphore functions */
/*--------------------------------------- */
/* Create a named semaphore */
SEMAPHORE_T osdCreateNamedSemaphore ( char * ) ;
/* Create a mutually exlusive semaphore */
SEMAPHORE_T osdCreateSemaphore ( void ) ;
/* create an event semaphore */
SEMAPHORE_T osdCreateEventSemaphore ( void ) ;
/* create a named event semaphore */
SEMAPHORE_T osdCreateNamedEventSemaphore ( char * ) ;
/* Destroy the specified mutually exclusive semaphore object */
uSHORT osdDestroySemaphore ( SEMAPHORE_T ) ;
/* Request access to the specified mutually exclusive semaphore */
uLONG osdRequestSemaphore ( SEMAPHORE_T , uLONG ) ;
/* Release access to the specified mutually exclusive semaphore */
uSHORT osdReleaseSemaphore ( SEMAPHORE_T ) ;
/* wait for a event to happen */
uLONG osdWaitForEventSemaphore ( SEMAPHORE_T , uLONG ) ;
/* signal an event */
uLONG osdSignalEventSemaphore ( SEMAPHORE_T ) ;
/* reset the event */
uLONG osdResetEventSemaphore ( SEMAPHORE_T ) ;
/*----------------- */
/* Thread functions */
/*----------------- */
/* Releases control to the task switcher in non-preemptive */
/* multitasking operating systems. */
void osdSwitchThreads ( void ) ;
/* Starts a thread function */
uLONG osdStartThread ( void * , void * ) ;
/* what is my thread id */
uLONG osdGetThreadID ( void ) ;
/* wakes up the specifed thread */
void osdWakeThread ( uLONG ) ;
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/* osd sleep for x milliseconds */
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void osdSleep ( uLONG ) ;
# define DPT_THREAD_PRIORITY_LOWEST 0x00
# define DPT_THREAD_PRIORITY_NORMAL 0x01
# define DPT_THREAD_PRIORITY_HIGHEST 0x02
uCHAR osdSetThreadPriority ( uLONG tid , uCHAR priority ) ;
# ifdef __cplusplus
} /* end the xtern "C" declaration */
# endif
# endif /* osd_util_h */