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mm.inc
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上传日期：2013-04-11
资源大小：19621k
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操作系统开发
开发平台：
Visual C++
- ;***
- ;mm.inc - macros to write memory model dependent code
- ;
- ; Copyright (c) 1987-1990, Microsoft Corporation. All rights reserved.
- ;
- ;Purpose:
- ; This file contains definitions of a number of macros which
- ; make the writing of memory model dependent code for the
- ; 8086 a little easier and more portable.
- ;
- ;Revision History:
- ; 05-18-89 SKS Removed ES references from pointer macros -- DS is used
- ; 09-01-89 GJF Fixed copyright date.
- ;
- ;*******************************************************************************
- ; the macro below is used by the assigning long arithmetic routines (almul,
- ; etc) to handle the model dependent data addressing - in small and middle
- ; models data addresses default to short (2 byte) addresses. in large model,
- ; data address are long (4 bytes).
- LOAD macro to,from
- mov to,from
- endm
- ; general code & data size constants & macros
- DAT_ADDR_SZ = 2
- BDAT_ADDR_SZ = 4
- TXT_ADDR_SZ = 2
- ; Big/Little Endian Definitions for Long Integers
- LOWORD equ [0]
- HIWORD equ [2]
- ; All Model Definitions
- BPARGBAS equ TXT_ADDR_SZ+2 ; offset from BP to first argument
- ; macro for windows fixup with retf #
- return macro n
- org $-1
- db 0c2h
- dw n
- endm
