Date: Mon, 23 Nov 1998 18:13:04 -0800 From: Mike Smith <mike@smith.net.au> To: shimon@simon-shapiro.org Cc: freebsd-alpha@FreeBSD.ORG Subject: Re: UnAligned Access, but why? Message-ID: <199811240213.SAA01690@dingo.cdrom.com> In-Reply-To: Your message of "Mon, 23 Nov 1998 16:38:09 EST." <XFMail.981123163809.shimon@simon-shapiro.org>
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> Am trying to get the DPT driver running on alpha.
> Narrowed down the problem to this:
>
> In sys/alpha/include/bus.h there is a series of static inline functions to
> do the equivalient of inb, inw, and inl, as well as outb, outw, outl. they
> are called bus_space_{read,write}_[124].
>
> The bus_space_read_[14] are causing unaligned access panics. These panics
> can be eliminated by casting explicitly:
Don't do this. Align the objects you're trying to transfer instead.
--
\\ Sometimes you're ahead, \\ Mike Smith
\\ sometimes you're behind. \\ mike@smith.net.au
\\ The race is long, and in the \\ msmith@freebsd.org
\\ end it's only with yourself. \\ msmith@cdrom.com
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