Date: Thu, 11 Jan 2001 16:30:29 +1100 From: Peter Jeremy <peter.jeremy@alcatel.com.au> To: Matthew Jacob <mjacob@feral.com> Cc: Warner Losh <imp@harmony.village.org>, Matt Jacob <mjacob@FreeBSD.ORG>, cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: Re: cvs commit: src/sys/alpha/include bus.h Message-ID: <20010111163029.B91242@gsmx07.alcatel.com.au> In-Reply-To: <Pine.BSF.4.21.0101092200070.2888-100000@beppo.feral.com>; from mjacob@feral.com on Tue, Jan 09, 2001 at 10:04:03PM -0800 References: <200101100441.f0A4f2s58670@harmony.village.org> <Pine.BSF.4.21.0101092200070.2888-100000@beppo.feral.com>
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On 2001-Jan-09 22:04:03 -0800, Matthew Jacob <mjacob@feral.com> wrote:
>
>
>> In message <200101091817.f09IHng10622@freefall.freebsd.org> Matt Jacob writes:
>> : me that BUS_SPACE_UNRESTRICTED should b ~0UL, not ~0.
>>
>> Would this impact the 10E6 uses of ~0 in the bus_alloc_resource calls
>> we have?
>
>int foo()
>{
> bar(~0);
>}
>int zoo()
>{
> bar1(~0UL);
>}
...
>Sorta looks the same to me....
I don't think that's a valid test. A more reasonable test would be
something like
unsigned long foo, bar;
fun()
{
foo = bar & ~0;
}
Unfortunately, I don't have a functional FreeBSD/Alpha box right now,
but both Compaq CC and gcc-2.8.1 generate "foo = bar". I'm not sure
that this behaviour makes sense.
Peter
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