dosext.h

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C头文件 代码 · 共 83 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:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
*               DESCRIBE IT HERE!
*
****************************************************************************/



#ifndef _DOSEXT_INCLUDED

struct ByteRegisters {
        unsigned char al,ah;
        unsigned char bl,bh;
        unsigned char cl,ch;
        unsigned char dl,dh;
};

struct WordRegisters {
        unsigned short ax;
        unsigned short bx;
        unsigned short cx;
        unsigned short dx;
        unsigned short bp;
        unsigned short si;
        unsigned short di;
        unsigned short ds;
        unsigned short es;
        unsigned short flags;
};

typedef union Registers {
        struct ByteRegisters h;
        struct WordRegisters x;
} Registers;

typedef struct InterruptData {
        short interrupt_no;
        Registers regs;
} InterruptData;

#define    FLAG_CARRY           0x0001
#define    FLAG_PARITY          0x0004
#define    FLAG_AUX_CARRY       0x0010
#define    FLAG_ZERO            0x0040
#define    FLAG_SIGN            0x0080
#define    FLAG_TRACE           0x0100
#define    FLAG_INTERRUPT       0x0200
#define    FLAG_DIRECTION       0x0400
#define    FLAG_OVERFLOW        0x0800

void     InterruptCPU( void );

#ifndef __WATCOMC__
#define MK_FP(__s,__o) ((void far*)(((unsigned long)(__s)<<16)|(unsigned)(__o)))
#endif

#endif