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.code
; INTN
; EFIAPI
; XenHypercall2 (
; IN VOID *HypercallAddr,
; IN OUT INTN Arg1,
; IN OUT INTN Arg2
; );
XenHypercall2 PROC
; Save only ebx, ecx is supposed to be a scratch register and needs to be
; saved by the caller
push ebx
; Copy HypercallAddr to eax
mov eax, [esp + 8]
; Copy Arg1 to the register expected by Xen
mov ebx, [esp + 12]
; Copy Arg2 to the register expected by Xen
mov ecx, [esp + 16]
; Call HypercallAddr
call eax
pop ebx
ret
XenHypercall2 ENDP
END
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