Andreas Schwab wrote:
quoted text
> 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
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