gen8087.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 54 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!
*
****************************************************************************/


typedef enum {
        OP_STK0,        /*  - must be 0. See FPReloc. */
        OP_STK1,        /*  - must be 1 */
        OP_STKI,
        OP_MEM,
        OP_CONS,
        OP_NONE
} operand_type;

typedef enum {
        RES_STK0,
        RES_STKI,
        RES_MEM,
        RES_NONE,
        RES_MEM_THROWAWAY
} result_type;

#define MAX_8087_REG    7

#define _Is87Ins( ins ) ( _IsFloating( (ins)->type_class ) \
                       || _IsFloating( (ins)->base_type_class ) )