linux-kernel - Re: __LITTLE_ENDIAN vs. __LITTLE_ENDIAN

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Message-ID: <470BDA3A.1060809@freescale.com>
Date:	Tue, 09 Oct 2007 14:44:58 -0500
From:	Timur Tabi <timur@...escale.com>
To:	Krzysztof Halasa <khc@...waw.pl>
CC:	Lennart Sorensen <lsorense@...lub.uwaterloo.ca>,
	Anton Altaparmakov <aia21@....ac.uk>,
	Jan Engelhardt <jengelh@...putergmbh.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: __LITTLE_ENDIAN vs. __LITTLE_ENDIAN_BITFIELD

Krzysztof Halasa wrote:
> Timur Tabi <timur@...escale.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
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