On 12/30/2010 11:34 AM, David Daney wrote:
>
> My suggestion: Since people already spend a great deal of effort
> maintaining the existing i386 compatible Linux syscall infrastructure,
> make your new 32-bit x86-64 Linux syscall ABI identical to the existing
> i386 syscall ABI. This means that the psABI must use the same size and
> alignment rules for in-memory structures as the i386 does.
>
No, it doesn't. It just means it need to do so *for the types used by
the kernel*. The kernel uses types like __u64, which would indeed have
to be declared aligned(4).
-hpa
--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.
