You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
61 lines
1.4 KiB
61 lines
1.4 KiB
|
|
;
|
|
;
|
|
; Copyright (C) Microsoft Corporation, 1986
|
|
;
|
|
; This Module contains Proprietary Information of Microsoft
|
|
; Corporation and should be treated as Confidential.
|
|
;
|
|
subttl emxenix.asm - XENIX function jump tables and Initialization
|
|
page
|
|
|
|
|
|
public __eminit, __emulate, __87exception
|
|
|
|
|
|
org 10h
|
|
|
|
__eminit: ; UNDONE - not used any more
|
|
|
|
|
|
org 15h
|
|
|
|
__emulate:
|
|
jmp protemulation ; protect mode emulation
|
|
|
|
|
|
org 1Ah
|
|
|
|
__87exception:
|
|
pop eax ; eax = error code
|
|
int 0FFh
|
|
|
|
page
|
|
;------------------------------------------------------------------------------
|
|
;
|
|
; install emulator (initial all data elements
|
|
;
|
|
; This routine is executed once for the 1st emulated instruction
|
|
;
|
|
;------------------------------------------------------------------------------
|
|
|
|
|
|
pub installemulator
|
|
|
|
mov [Einstall],1 ; mark emulator as initialized
|
|
|
|
mov eax,offset BEGstk ; pointer to beginning of stack
|
|
mov [BASstk],eax ; set base of stack
|
|
mov [CURstk],eax ; set current stack element
|
|
mov eax,offset ENDstk-Reg87Len
|
|
mov [LIMstk],eax ; set end of stack
|
|
|
|
mov ax,InitControlWord
|
|
mov [UserControlWord],ax ; initialize control words
|
|
mov [ControlWord],ax
|
|
|
|
xor eax,eax
|
|
mov [UserStatusWord],ax ; initialize status words
|
|
mov [StatusWord],ax
|
|
|
|
jmp protemcont ; continue emulating 1st instruction
|