LDC2 win64 calling convention

[realhet]

Hi,

Is there a documentation about the win64 calling convention used 
with LDC2 compiler?

So far I try to use the Microsoft x64 calling convention, but I'm 
not sure if that's the one I have to. But it's not too accurate 
becaues I think it uses the stack only.

https://en.wikipedia.org/wiki/X86_calling_conventions#Microsoft_x64_calling_convention

I'm asking for Your help in the following things:

1. Is there register parameters? (I think no)
2. What are the volatile regs? RAX, RCX, RDX, XMM6..XMM15?
3. Is the stack pointer aligned to 16?
4. Is there a 32 byte shadow area on the stack?

Thank you!