Initial commit of Command & Conquer Red Alert source code.

VQ/VQM32/REALMODE.H

@@ -0,0 +1,82 @@
+/*
+**	Command & Conquer Red Alert(tm)
+**	Copyright 2025 Electronic Arts Inc.
+**
+**	This program is free software: you can redistribute it and/or modify
+**	it under the terms of the GNU General Public License as published by
+**	the Free Software Foundation, either version 3 of the License, or
+**	(at your option) any later version.
+**
+**	This program is distributed in the hope that it will be useful,
+**	but WITHOUT ANY WARRANTY; without even the implied warranty of
+**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+**	GNU General Public License for more details.
+**
+**	You should have received a copy of the GNU General Public License
+**	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef VQMREALMODE_H
+#define VQMREALMODE_H
+/****************************************************************************
+*
+*         C O N F I D E N T I A L -- W E S T W O O D  S T U D I O S
+*
+*----------------------------------------------------------------------------
+*
+* FILE
+*     realmode.h
+*
+* DESCRIPTION
+*     Real-mode interfacing definitions and equates. Many of the definitions
+*     and descriptions in this file were taken from other sources and
+*     compiled here for use in MISC32 library.
+*
+* PROGRAMMER
+*     Denzil E. Long, Jr.
+*
+* DATE
+*     Febuary 6, 1995
+*
+****************************************************************************/
+
+/* REALPTR: Real-mode pointer (segment:offset16).
+ *
+ * The REALPTR data type is used in protected mode to hold real-mode
+ * pointers. The type is an unsigned long value, were the upper 16 bits
+ * are the segment number and the lower 16 bit are an offset. This type
+ * and the associated macros are identical to that of the PHARLAP "pltypes.h"
+ * definitions for easy of conversion to WATCOM/4GW.
+ */
+typedef unsigned long REALPTR;
+
+#define RP_OFF(rp) ((unsigned short)(((unsigned long)(rp)) & 0xFFFF))
+#define RP_SEG(rp) ((unsigned short)(((unsigned long)(rp)) >> 16))
+#define RP_SET(rp, off, seg) (rp = ((unsigned long)(seg) << 16) + (off))
+#define RP_INCR(rp, incr) (rp += ((unsigned long)(incr)) & 0xFFFF)
+
+#define MK_PTR(off, seg) (void *)((((unsigned long)seg&0xFFFF)<<4)+off)
+
+/* RMInfo: Real-mode interrupt call structure.
+ *
+ * Information that needs to be passed down to the real-mode interrupt is
+ * transfered using this structure. The address to this protected-mode
+ * structure (allocated by user) is passed into DPMI function 0x300. DOS/4GW
+ * will then use this information to set up the real-mode registers, switch
+ * to real-mode and then execute the interrupt in real-mode.
+ */
+typedef struct _RMInfo {
+	long  edi;
+	long  esi;
+	long  ebp;
+	long  reservedbysystem;
+	long  ebx;
+	long  edx;
+	long  ecx;
+	long  eax;
+	short flags;
+	short es,ds,fs,gs,ip,cs,sp,ss;
+} RMInfo;
+
+#endif /* VQMREALMODE_H */
+