env87.inc

来自「开放源码的编译器open watcom 1.6.0版的源代码」· INC 代码 · 共 51 行

;*****************************************************************************
;*
;*                            Open Watcom Project
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;*  ========================================================================
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; Define 8087 environment:
; ========================
;
;    ---------------<--- offsets relative  to here
;    |             | stack grows
;    |             |  this way
;    |             |     /|\
;    |             |      |
;    |             |
;    ---------------

ENV_SIZE      equ 14       ; size of buffer required for 8087 environment

ENV_CW        equ 0        ; control word
ENV_SW        equ 2        ; status word
ENV_TW        equ 4        ; tag word
ENV_IP        equ 6        ; instruction pointer
ENV_OP        equ 10       ; operand pointer