From: Timur Tabi <timur@freescale.com>
To: Andreas Schwab <schwab@suse.de>
Cc: Anton Altaparmakov <aia21@cam.ac.uk>,
Jan Engelhardt <jengelh@computergmbh.de>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: __LITTLE_ENDIAN vs. __LITTLE_ENDIAN_BITFIELD
Date: Fri, 05 Oct 2007 16:32:18 -0500 [thread overview]
Message-ID: <4706AD62.6030705@freescale.com> (raw)
In-Reply-To: <jer6k9mesf.fsf@sykes.suse.de>
Andreas Schwab wrote:
> Timur Tabi <timur@freescale.com> writes:
>
>> The CPU shift operation, yes. I'm talking about shift operations on
>> external memory-mapped devices.
>
> That is a property of how the device is wired to the bus. The cpu will
> always put a value of 128 on the bus such that D7 = 1 and D0-D6 = 0.
Yes, but is D7 on the left or on the right?
Anyway, this is academic now. I now know that __LITTLE_ENDIAN_BITFIELD is not
what I want, and that there's no macro that will tell how the lines from the
CPU to external memory are mapped.
--
Timur Tabi
Linux Kernel Developer @ Freescale
next prev parent reply other threads:[~2007-10-05 21:32 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-05 18:27 __LITTLE_ENDIAN vs. __LITTLE_ENDIAN_BITFIELD Timur Tabi
2007-10-05 18:35 ` Jan Engelhardt
2007-10-05 19:35 ` Timur Tabi
2007-10-05 19:43 ` Jan Engelhardt
2007-10-05 19:47 ` Timur Tabi
2007-10-05 20:04 ` Andreas Schwab
2007-10-05 20:07 ` Timur Tabi
2007-10-05 20:34 ` linux-os (Dick Johnson)
2007-10-05 20:37 ` Timur Tabi
2007-10-05 23:27 ` Benjamin Herrenschmidt
2007-10-05 21:17 ` Andreas Schwab
2007-10-05 21:06 ` Anton Altaparmakov
2007-10-05 21:10 ` Timur Tabi
2007-10-05 21:29 ` Andreas Schwab
2007-10-05 21:32 ` Timur Tabi [this message]
2007-10-05 23:17 ` Andreas Schwab
2007-10-09 17:46 ` Lennart Sorensen
2007-10-09 17:56 ` Timur Tabi
2007-10-09 18:34 ` Lennart Sorensen
2007-10-09 18:50 ` Krzysztof Halasa
2007-10-09 18:57 ` Timur Tabi
2007-10-09 19:37 ` Krzysztof Halasa
2007-10-09 19:44 ` Timur Tabi
2007-10-09 22:11 ` Krzysztof Halasa
2007-10-09 19:11 ` Jeremy Fitzhardinge
2007-10-09 19:39 ` Krzysztof Halasa
2007-10-09 21:40 ` Jeremy Fitzhardinge
2007-10-09 22:34 ` Krzysztof Halasa
2007-10-10 12:05 ` linux-os (Dick Johnson)
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