GetStdHandle	PROTO
ExitProcess	PROTO
WriteConsoleA	PROTO

.code
mainCRTStartup proc			; Entry point
main	proc
	SUB	RSP,5*SIZEOF QWORD	; Room for 5 parameters
	MOV	RCX,-11			; STD_OUTPUT_HANDLE (standard output)
	CALL	GetStdHandle		; Get the number of the file descriptor
	MOV	RCX,RAX
	LEA	RDX,MSG			; String address
	MOV	R8,LENGTHOF MSG		; String length
	LEA	R9,WRITTEN		; Number of the bytes actually written
	MOV	QWORD PTR [RSP+4*SIZEOF QWORD],0
	CALL	WriteConsoleA
	CALL	ExitProcess		; Process termination
main	endp
mainCRTStartup endp

.data
MSG	BYTE "Hello, world!",10,10
WRITTEN DWORD ?
end