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From: Timur Tabi <timur@freescale.com>
To: Krzysztof Halasa <khc@pm.waw.pl>
Cc: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>,
	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: Tue, 09 Oct 2007 14:44:58 -0500	[thread overview]
Message-ID: <470BDA3A.1060809@freescale.com> (raw)
In-Reply-To: <m37ilwcc4v.fsf@maximus.localdomain>

Krzysztof Halasa wrote:
> Timur Tabi <timur@freescale.com> writes:
> 
>>> There is no such thing as bit-order.
>> Yes, there is.  You need to read the article at
>> http://www.linuxjournal.com/article/6788.  Explains what it means for
>> bits to be in one order versus another.  This is from the perspective
>> of external devices, not the CPU (which is always consistent with
>> regards to bit order)
> 
> Have you ever seen a device or platform with the bits reversed?

I think when the PowerPC is running in little-endian mode, that might be the 
case.  It needs to be able to write a byte in big-endian mode, and then read 
that byte back in little-endian mode and have it be the same byte.

-- 
Timur Tabi
Linux Kernel Developer @ Freescale

  reply	other threads:[~2007-10-09 19:45 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
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 [this message]
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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