[Patch] C1X threading support

[Warner Losh]

On Dec 21, 2011, at 8:16 AM, Dag-Erling Smørgrav wrote:

> "O. Hartmann" <ohartman at zedat.fu-berlin.de> writes:
>> How is the other BSD sibbling, NetBSD, dealing with such things? NetBSD
>> is supposed to run on a trmendous variety of hardware, even a mixture of
>> bigendian and littleenddian and I'm quite sure they must have overcome
>> this probleme anyway.
> 
> The same way FreeBSD does: where ordering matters, use explicit
> conversions when reading and writing.  The conversion functions / macros
> are defined in such a manner that unnecessary conversions (e.g. host to
> little-endian on a little-endian system) do not generate any code at
> all.  The only downside is that you can't directly compare variables
> unless you're certain that they're both in host order.

And it is difficult for automated tools to help you know if you are "sure" or not.

Warner