Re: need help in 64-bit code

[Greg KH <greg@xxxxxxxxx>]

On Fri, May 05, 2006 at 08:55:07PM +0530, sudheer wrote:
> Hi Thomas,
> 
> Thomas Petazzoni wrote:
> 
> >Hi,
> >
> >Le Fri, 05 May 2006 18:02:48 +0530,
> >sudheer <urwithsudheer@xxxxxxxxx> a ?crit :
> >
> > 
> >
> >>To have  the compatability i have used  the macro CONFIG_X86_64 in 
> >>.config  .
> >>   
> >>
> >
> >Why do you need to differentiate code executed on 32 bits platforms
> >from code executed on 64 bits platform ? Generally speaking, your code
> >should be portable, and not rely on CONFIG_X86_64 or other options of
> >the same kind.
> >
> > 
> >
> I want to assign some data to a long pointer variable SysAdddr.
> 
> #ifdef CONFIG_64
> *(SysAddr + num_items) = (0xaa55aa55aa000000 + num_items);
> #else
> *(SysAddr + num_items) = (0x11220000 + (num_items));
> #endif

Why would you want to do that?  What are you trying to do here?

Do you have a link to your driver's source code?

thanks,

greg k-h

--
Kernelnewbies: Help each other learn about the Linux kernel.
Archive:       http://mail.nl.linux.org/kernelnewbies/
FAQ:           http://kernelnewbies.org/faq/