oeminit.asm

来自「可在VMWare workstation中的运行的wince 5 bsp」· 汇编 代码 · 共 69 行

;
; Copyright (c) Microsoft Corporation.  All rights reserved.
;
;
; Use of this source code is subject to the terms of the Microsoft end-user
; license agreement (EULA) under which you licensed this SOFTWARE PRODUCT.
; If you did not accept the terms of the EULA, you are not authorized to use
; this source code. For a copy of the EULA, please see the LICENSE.RTF on your
; install media.
;
;-------------------------------------------------------------------------------
;
;       THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
;       ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
;       THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
;       PARTICULAR PURPOSE.
;  
;-------------------------------------------------------------------------------
.486p
.model FLAT
OFFSET32 EQU <OFFSET FLAT:>

;-------------------------------------------------------------------------------
;-------------------------------------------------------------------------------
.code

STACK_SIZE     EQU 4000h
        db      STACK_SIZE dup ( 0 )
STACK_START    equ     $        
 
align 4

;-------------------------------------------------------------------------------
;-------------------------------------------------------------------------------
_BootUp PROC NEAR PUBLIC

	mov	esp, OFFSET32 STACK_START
	EXTRN	_BootloaderMain:FAR
	mov	eax, OFFSET _BootloaderMain
	jmp	eax


_BootUp ENDP

;-------------------------------------------------------------------------------
;-------------------------------------------------------------------------------
StartUp PROC NEAR C PUBLIC

        cli
        cld
        
        mov ebx, OFFSET CacheEnabled
        mov     eax, cr0
        and eax, not 060000000h     ; clear cache disable & cache write-thru bits
        mov     cr0, eax
        jmp ebx
        align   4
CacheEnabled:
    
        wbinvd  ; clear out the cache
 
        mov eax, OFFSET _BootUp
        jmp     eax
        

StartUp ENDP

    END