132 lines
4.1 KiB
C
132 lines
4.1 KiB
C
/*
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THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
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SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
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END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
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ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
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IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
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SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
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FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
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CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
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AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
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COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
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*/
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/*
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* $Source: /cvs/cvsroot/d2x/include/u_dpmi.h,v $
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* $Revision: 1.1.1.1 $
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* $Author: bradleyb $
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* $Date: 2001-01-19 03:30:16 $
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*
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* Prototypes for DPMI services.
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*
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* $Log: not supported by cvs2svn $
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* Revision 1.1.1.1 1999/06/14 22:02:25 donut
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* Import of d1x 1.37 source.
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*
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* Revision 1.9 1995/01/14 19:20:14 john
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* Added function to set a selector's base address.
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*
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* Revision 1.8 1994/11/28 20:22:03 john
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* Added some variables that return the amount of available
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* memory.
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*
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* Revision 1.7 1994/11/15 18:26:38 john
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* Added verbose flag.
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*
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* Revision 1.6 1994/11/07 11:35:05 john
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* Added prototype for real_free
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*
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* Revision 1.5 1994/10/27 19:54:48 john
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* Added unlock region function,.
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*
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* Revision 1.4 1994/09/27 18:27:56 john
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* Added pragma to make inp,outp,enable,disable intrinsic
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*
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* Revision 1.3 1994/09/27 11:54:45 john
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* Added DPMI init function.
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*
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* Revision 1.2 1994/08/24 18:53:51 john
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* Made Cyberman read like normal mouse; added dpmi module; moved
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* mouse from assembly to c. Made mouse buttons return time_down.
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*
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* Revision 1.1 1994/08/24 10:22:48 john
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* Initial revision
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*
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*
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*/
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#ifndef _DPMI_H
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#define _DPMI_H
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#include "pstypes.h"
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typedef struct dpmi_real_regs {
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uint edi;
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uint esi;
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uint ebp;
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uint reserved_by_system;
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uint ebx;
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uint edx;
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uint ecx;
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uint eax;
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ushort flags;
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ushort es,ds,fs,gs,ip,cs,sp,ss;
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} dpmi_real_regs;
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#ifdef __WATCOMC__
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#pragma intrinsic( inp );
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#pragma intrinsic( outp );
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#pragma intrinsic( _enable );
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#pragma intrinsic( _disable );
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#endif
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#ifdef __DJGPP__
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/* inp & outp are functions in DJGPP, while inportb & outportb are inlined */
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#define inp(port) inportb(port)
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#define outp(port,value) outportb(port,value)
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#if 0 /* only causes problems */
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#undef _enable()
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#undef _disable()
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#define _enable() __asm__ __volatile__ ("sti")
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#define _disable() __asm__ __volatile__ ("cli")
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#endif
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#endif
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#ifdef __DJGPP__
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#include "sys/nearptr.h"
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#define DPMI_real_segment(P) ((((uint)(P)-(uint)(__djgpp_conventional_base)) >> 4) & 0xffff)
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#define DPMI_real_offset(P) (((uint)(P)-(uint)(__djgpp_conventional_base)) & 0xf)
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#else
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#define DPMI_real_segment(P) ((((uint) (P)) >> 4) & 0xFFFF)
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#define DPMI_real_offset(P) (((uint) (P)) & 0xF)
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#endif
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// Initializes dpmi. Returns zero if failed.
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extern int dpmi_init(int verbose);
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// Returns a pointer to a temporary dos memory block. Size must be < 1024 bytes.
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extern void *dpmi_get_temp_low_buffer( int size );
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extern void *dpmi_real_malloc( int size, ushort *selector );
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extern void dpmi_real_free( ushort selector );
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extern void dpmi_real_int386x( ubyte intno, dpmi_real_regs * rregs );
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extern void dpmi_real_call(dpmi_real_regs * rregs);
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extern int dpmi_lock_region(void *address, unsigned length);
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extern int dpmi_unlock_region(void *address, unsigned length);
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// returns 0 if failed...
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extern int dpmi_allocate_selector( void * address, int size, ushort * selector );
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extern int dpmi_modify_selector_base( ushort selector, void * address );
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extern int dpmi_modify_selector_limit( ushort selector, int size );
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#ifndef __GNUC__
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// Sets the PM handler. Returns 0 if succssful
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extern int dpmi_set_pm_handler(unsigned intnum, void far * isr );
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#else
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extern int dpmi_set_pm_handler(unsigned intnum, void * isr );
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#endif
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extern unsigned int dpmi_virtual_memory;
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extern unsigned int dpmi_available_memory;
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extern unsigned int dpmi_physical_memory;
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extern unsigned int dpmi_dos_memory;
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#endif
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