descent/LIB/DOSXPTRS.H

/*
THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
SOFTWARE CORPORATION ("PARALLAX").  PARALLAX, IN DISTRIBUTING THE CODE TO
END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
IN USING, DISPLAYING,  AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
FREE PURPOSES.  IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES.  THE END-USER UNDERSTANDS
AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.  
COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
*/
#ifndef _DOSXPTRS_DOT_H
#define _DOSXPTRS_DOT_H

/* The following section helps us with far pointers for the 32-bit
 * DOS extenders.  Some of the compilers do not support far pointers,
 * so we set up a generic far pointer that all compilers can
 * use.
 */

#if defined( DOSX386 )

#if defined( GF_WATCOM_C_386 )
/*
 * Pharlap and Watcom are both trying to define FP_OFF.  I get a redef
 * error when I include DOS.H *after* pharlap.h.  So I do a preemptive
 * include here to avoid that problem.
 */
#include <dos.h>
#if !defined( _M_IX86 )
#define _M_IX86 0
#endif
#endif

#include <pharlap.h>

#define GF_FARPTR       FARPTR
#define GF_FP_OFF       FP_OFF
#define GF_FP_SEL       FP_SEL

#define GF_REALPTR      REALPTR

extern unsigned short _flat_code_sel;
extern unsigned short _flat_data_sel;
extern unsigned short _flat_dos_sel;
extern unsigned short _flat_vid_sel;
void GF_CONV _SetTNTConfigInfo( void );

#else

#define GF_FARPTR       void GF_FAR *
#define GF_REALPTR      unsigned long

#define GF_MK_FP        MK_FP

#endif

#endif