/****************************************************************************
*
*                            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:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
*               DESCRIBE IT HERE!
*
****************************************************************************/


#include "cvars.h"

extern  void *FEmalloc();                       /* cmemmgr */
extern  void FEfree();                          /* cmemmgr */
extern  void OpenPageFile();


void InitEMS()
{
}


void FiniEMS()
{
}


void CSegFree( SEGADDR_T segment )
{
    FEfree( segment );
}


SEGADDR_T AllocSegment( struct seg_info *si )
{
    si->in_farmem = 0;
    si->in_page_file = 0;
    si->index = (SEGADDR_T)FEmalloc( 0x04000 );
    if( si->index != 0 ) {
        si->in_farmem = 1;
        si->allocated = 1;
        return( si->index );
    }
    if( PageHandle == -1 ) {
        OpenPageFile();      /* write out to page file */
    }
    si->index = (SEGADDR_T)NextFilePage;
    si->in_page_file = 1;
    si->allocated = 1;
    ++NextFilePage;
    return( 0 );
}


SEGADDR_T AccessSegment( struct seg_info *si )
{
    SEGADDR_T segment;

    if( ! si->allocated ) {
        AllocSegment( si );
    }
    segment = 0;
    if( si->in_farmem ) {
        segment = si->index;
    }
    return( segment );
}
