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From: Warner Losh <imp@bsdimp.com>
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Cc: threads@freebsd.org, Poul-Henning Kamp <phk@phk.freebsd.dk>,
	freebsd-arch@freebsd.org
Subject: Re: [Patch] C1X threading support
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On Dec 21, 2011, at 8:16 AM, Dag-Erling Sm=F8rgrav wrote:

> "O. Hartmann" <ohartman@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.
>=20
> 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