windows - Push an argument into stack? -
i know first 4 arguments in register ( rcx , rdx , r8 , r9 ), , additional arguments pushed on stack. question: how push argument onto stack? tried (push 0) not work? code ( masm64 ) extrn exitprocess: proc extrn messageboxexa: proc .data caption db '64-bit hello!', 0 message db 'hello world!', 0 .code start proc sub rsp, 38h mov rcx, 0 ; hwnd = hwnd_desktop lea rdx, message ; lpcstr lptext lea r8, caption ; lpcstr lpcaption mov r9d, 0 ; utype = mb_ok push 0 ; wlanguageid call messageboxexa mov ecx, eax add rsp, 38h call exitprocess start endp end i'm know messagebox , messageboxex work same way, im trying use messageboxex because need 1 parameter passed (for learning purpose). i know i've asked similar question, more related vb.net while not. my assembly little rusty, under impression arguments went onto stack (in reverse order) - i'...