cinit.c

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C语言 代码 · 共 79 行

/****************************************************************************
*
*                            Open Watcom Project
*
*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
*  ========================================================================
*
*    This file contains Original Code and/or Modifications of Original
*    Code as defined in and that are subject to the Sybase Open Watcom
*    Public License version 1.0 (the 'License'). You may not use this file
*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
*    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
*    provided with the Original Code and Modifications, and is also
*    available at www.sybase.com/developer/opensource.
*
*    The Original Code and all software distributed under the License are
*    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
*    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
*    ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
*    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
*    NON-INFRINGEMENT. Please see the License for the specific language
*    governing rights and limitations under the License.
*
*  ========================================================================
*
* Description:  Common clib initialization code.
*
****************************************************************************/


#include "variety.h"
#include <stdio.h>
#include <stdlib.h>
#include <io.h>
#if defined(__DOS_386__) && !defined(__OSI__)
    #include "extender.h"
    #include "dpmi.h"
#elif defined(__OS2__)
    #define INCL_DOSFILEMGR
    #include <wos2.h>
#elif defined(__WINDOWS_386__) || defined(__NT__)
    #include <windows.h>
#endif

#if defined(__OS2__)
    #if defined(__PPC__)
    #else
        #pragma library("os2386")
    #endif
    unsigned            __hmodule;
#endif

#if defined(__DOS_386__) && !defined(__OSI__)
    extern int __GETDSStart_;
    extern int __GETDSEnd_;
    extern int __DPMI_hosted(void);
#endif

void    __CommonInit( void )
/**************************/
{
#if !defined(__NETWARE__) && !defined(__NT__)
    _amblksiz = 32 * 1024;      /* set minimum memory block allocation */
#endif

#if defined(__DOS_386__) && !defined(__OSI__)
    /*
     * If we are running under DOS/4G then we need to page lock interrupt
     * handlers (since we could be running under VMM).
     */
    if (!_IsPharLap() && (__DPMI_hosted() == 1))
    {
        DPMILockLinearRegion((long)&__GETDSStart_,
            ((long)&__GETDSEnd_ - (long)&__GETDSStart_));
    }
#endif
}