DNA

开发平台：
C/C++

ayncInit.asm：源码内容
							.386p
.xlist
	include vmm.inc
	include debug.inc
	include ilb.inc
	include aep.inc
	include isp.inc
	include	ddb.inc
	include dcb.inc
	include portddb.inc
	
;	include	iodebug.inc	; dragon debug stuff
	include	configmg.inc	; used to process the dev node
	include	opttest.inc	; optimized test, or, and and macros
.list
memcpy proto C, lpd:PTR, lps:DWORD, size_t:DWORD
VXD_LOCKED_CODE_SEG
extrn	milb:DWORD
extrn	OnAsyncRequest:near
BeginProc	Port_Async_Request, esp ;处理系统事件
ArgVar	AEPPtr, DWORD
	TRAP
	EnterProc
	
	mov		ebx, AEPPtr
	mov		[ebx.AEP_result], AEP_SUCCESS
	mov		si, [ebx.AEP_func]
	cmp		si, AEP_INITIALIZE
	je		AEP_Init
	cmp 		si, AEP_Boot_Complete
	je		AEP_BootComplete
	cmp		si, AEP_CONFIG_DCB
	je		AEP_ConfigDcb
	cmp		si, AEP_IOP_TIMEOUT
	je		AEP_IopTimeOut
	cmp		si, AEP_DEVICE_INQUIRY
	je		AEP_DeviceInquiry
			
	mov		[ebx.AEP_result],AEP_FAILURE
	
	LeaveProc
	Return	
EndProc		Port_Async_Request
VXD_LOCKED_CODE_ENDS
;==================================================
VXD_PAGEABLE_DATA_SEG
	public	DevCount
		DevCount	db	0
	vendor			db	" Yan.J.F  VCDRom Driver     ",0,0
	BDF_Removable 		EQU	4
VXD_PAGEABLE_DATA_ENDS
;==================================================
VXD_PAGEABLE_CODE_SEG
BeginProc	AEP_Init
	TRAP
	EnterProc
	sub 	esp, size ISP_ddb_create
	mov		edi, esp
	
	mov	[edi].ISP_ddb_hdr.ISP_func, ISP_CREATE_DDB
	mov	[edi].ISP_ddb_size, size DDB;
	mov	[edi].ISP_ddb_flags, 0
	
	push	edi
	call	[milb.ILB_service_rtn]
	movzx	eax, [edi].ISP_ddb_hdr.ISP_result
	add	esp, size ISP_ddb_create + 4
	cmp	eax, 0
	jne	@F
	
m_exit:
;;;;;;;;;;;// not deallocate!!!!!!!!!	
	LeaveProc
	Return
@@:
	mov		[ebx.AEP_result],AEP_FAILURE
	jmp		m_exit
	
EndProc	AEP_Init
;;;;;;;;;;;;;;;;;;;;;;;;;;
BeginProc	AEP_ConfigDcb
	TRAP
	EnterProc
	mov 	esi, [ebx].AEP_d_c_dcb
	inc		[DevCount]
	mov		[esi].DCB_device_type, DCB_type_cdrom ; 我是光驱
	mov		[esi].DCB_disk_bpb_flags, DCBF_DISK_BPB_USEFAKE
	or		[esi].DCB_device_flags, DCB_DEV_REMOVABLE
	or		[esi].DCB_tsd_flags, DCB_TSD_ACTUAL_PRE_SET
;;;;;;;;;;;;;;;;;;;;;;
	mov		[esi].DCB_max_xfer_len, 08000H
	mov		[esi].DCB_max_sg_elements, 16
	
	push 	esi
	push	edi
	mov		esi, edi	
	sub		esp, size ISP_calldown_insert
	mov		edi, esp
	
	mov		[edi].ISP_func, ISP_insert_calldown
	mov		[edi].ISP_i_cd_flags, DCB_dmd_small_memory
	or		[edi].ISP_i_cd_flags, DCB_dmd_physical
	or		[edi].ISP_i_cd_flags, DCB_dmd_load_eject_media
	mov		[edi].ISP_i_cd_dcb, esi
	mov		al, [ebx.AEP_lgn]
	mov		[edi].ISP_i_cd_lgn, al
	mov		[edi].ISP_i_cd_req, offset32 OnAsyncRequest ;挂接客户呼叫处理过程
	mov		eax, [ebx.AEP_ddb]
	mov		[edi].ISP_i_cd_ddb, eax
	mov		[edi].ISP_i_cd_expan_len, 0
	push	edi
	call	[milb.ILB_Service_rtn]
	add		esp, size ISP_calldown_insert + 4
	
	pop		edi
	pop		esi
c_exit:	
	LeaveProc
	Return
failed_exit:
	mov		[ebx].AEP_result, AEP_FAILURE
	jmp		c_exit
	
EndProc	AEP_ConfigDcb
;;;;;;;;;;;;;;;;;;;;
	
BeginProc	AEP_BootComplete
	TRAP
	EnterProc
	
	cmp 	[DevCount], 0 ;我只建立一个虚拟光驱
	je		@F
	
	LeaveProc
	Return
@@:
	mov 	[ebx.AEP_result], AEP_FAILURE
EndProc	AEP_BootComplete
;;;;;;;;;;;;;;;;;;;;;;;;;;;
BeginProc	AEP_IopTimeOut
	
	TRAP
	
	Return
	
EndProc	AEP_IopTimeOut
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
BeginProc	AEP_DeviceInquiry ;填写虚拟光驱信息
	
	TRAP
	EnterProc
	
	mov 	esi, [ebx.AEP_i_d_dcb]
;	AssertDCB <esi>      this macro in the <iodebug.inc>
	movzx	ecx, [esi].DCB_unit_on_ctl
	cmp 	ecx, 0
	jne		@F
	
	mov		[esi].DCB_inquiry_flags, DCB_type_cdrom
	invoke	memcpy, addr [esi].DCB_vendor_id, near32 ptr [vendor], 28
	
q_exit:	
	LeaveProc
	Return
@@:
	mov		[ebx.AEP_result], AEP_NO_MORE_DEVICES
	jmp		q_exit	
EndProc	AEP_DeviceInquiry
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
VXD_PAGEABLE_CODE_ENDS
end

						