Access 'this' in inline assembly

[Martin Kinkelin]

Hi, sorry for the dumb question, but how do i get the address of an object
inside a member function in inline assembly?

I have no experience with assembler yet. It seems like names of variables on
the stack are treated as pointers in inline assembly, but I have no clue about
how to get the address of the object itself (this and [this] do not work).

struct float4
{
    float[4] _data;

    float dot(in float4 rhs) const
    {
        float r = void;
        asm
        {
            movups XMM0, this; // need pointer to _data
            movups XMM1, rhs;
            ...
            movss r, XMM0;
        }
        return r;
    }
}

Please note that even this doesn't work:
float* ptr = cast(float*) _data.ptr;
asm { movups XMM0, ptr; }
=> 2 operands found for movups instead of the expected 1