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C/C++

onioctl.asm：源码内容

							.386p
.xlist
	include vmm.inc
	include blockdev.inc
	include cdioctl.inc	
	include ior.inc
	include iop.inc
	include debug.inc
;	include iodebug.inc     ; various IOS assertions (like AssertIOP)
.list
VXD_LOCKED_DATA_SEG
	extrn	hFile:WORD
VXD_LOCKED_DATA_ENDS
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
VXD_LOCKED_CODE_SEG
public	OnCDRomIOCtl
BeginProc	OnCDRomIOCtl , esp, sCall
ArgVar	IOR_ptr,DWORD
	
	TRAP
	EnterProc
	
	mov		eax, IOR_ptr
	push		ebx
	mov		ebx, eax
	movzx		eax, [ebx]._ureq._IOR_ioctl_function
	
	cmp		eax, CD_IO_RESET_DRIVE
	je		ResetDrive
	cmp		eax, CD_IO_SEEK	
	je		Seek
	cmp		eax, CD_IO_GET_DEV_STATUS
	je		GetDevStatus
;	cmp		eax, CD_IO_QUERY_IOCTL_FUNC
;	je		QueryIoctlFunc
	cmp		eax, CD_IO_DISC_INFO
	je		GetDiscInfo
	
	mov		[ebx]._ureq._IOR_ioctl_return, IORS_INVALID_COMMAND
	xor		eax,eax
	jmp		IO_invalid	
	
IO_Quit:
	mov		[ebx].IOR_status, IORS_SUCCESS
	jmp		IO_finish
IO_invalid:
	mov		[ebx].IOR_status, IORS_INVALID_COMMAND
IO_finish:
	pop		ebx
	LeaveProc
	return
ResetDrive:
	mov		[ebx]._ureq._IOR_ioctl_return, NO_ERROR
	jmp		IO_Quit
Seek:
	mov		[ebx]._ureq._IOR_ioctl_return, NO_ERROR
	jmp		IO_Quit
GetDevStatus:
	mov		[ebx]._ureq._IOR_ioctl_return, NO_ERROR
	mov		eax, [ebx]._ureq._IOR_ioctl_buffer_ptr 
	mov		[eax].DeviceStatus, CDDEVSTAT_AUDIO_MANIPULATE
	or		[eax].DeviceStatus, CDDEVSTAT_REDBOOK_TOO
;	or		[eax].DeviceStatus, CDDEVSTAT_PLAY_AUDIO_TOO
	or		[eax].DeviceStatus, CDDEVSTAT_NO_DISK_IN_DRIVE + CDDEVSTAT_CDXA
	jmp		IO_Quit
	
GetDiscInfo:
	test		hFile, 0
;	jz		@F
;@@:
	mov		[ebx]._ureq._IOR_ioctl_return, IORS_NO_MEDIA
	jmp		IO_Quit	
QueryIoctlFunc:
	jmp		IO_Quit
		
EndProc			OnCDRomIOCtl
VXD_LOCKED_CODE_ENDS
	end

						