[fpc-devel] OO rewrite - technical questions

[Sven Barth]

Hi!

On 19.07.2010 18:50, Daniël Mantione wrote:
> Well, the following works on i386 but doesn't on x86_64, even though
> modify_ldt succeeds:
>
>(...)
>
> If you know how to make it work, I keep myself recommended :)

Well... according to this thread 
http://stackoverflow.com/questions/1180796/how-to-use-gs-in-64-bit-windows-assembly-eg-porting-tls-code 
it's only possible in kernel mode using a special instruction. The 
kernel might set up the necessary data and the usermode part of the 
Win32 subsystem fills in the data later.

Regards,
Sven