Re: [Nasm-devel] [PATCH] win64 fix + addition

[H. P. A. <hp...@zy...>]

On 07/02/2012 12:44 AM, Йордан Гигов wrote:
> The language addition can indeed be achieved with macros, but you
> should really test the one in process_ea(). I can't test it until I
> find out why all the 32-bit linkers I try are unable to find any of
> the symbols. I haven't tried alink yet.
> I have a feeling the else block after it won't work right.

That patch looks wrong, and I mean dangerously wrong.  I think you don't 
quite understand how the CPU works.

The reason that code is there is that in 64-bit mode, a displacement 
without a SIB is a RIP-relative reference.  There is no 64-bit 
displacement mode (except for one instruction, see the manual) at all; 
you have to get the address into a register.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.