Thanks Tim,
I don't know if this is useful but at lest it builds OK.
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include \masm32\include64\masm64rt.inc
.code
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entry_point proc
LOCAL .rsp :QWORD
LOCAL hInstance :QWORD
invoke GetModuleHandle,0
mov hInstance, rax
mov rdx, $
sub rdx, hInstance
add rdx, 127
and rdx, -128 ; align rdx by 128 bytes relative to hInstance
conout str$(rdx),lf,lf
waitkey
invoke ExitProcess,0
ret
entry_point endp
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end