[En-Nut-Discussion] Fwd: Not fixed!!!: Re: confirmed!!! Re: NutOS 4.4.0 on ARM7: possibly bug in NutEnterCritical / NutExitCritical
Alain M.
alainm at pobox.com
Tue Feb 26 17:59:11 CET 2008
Duane Ellis escreveu:
> Nathan Moore wrote:
>> The reason you use "memory" in clobber as I understand it is if you were
>> to alter something through a pointer within an asm operation.
>>
> Yes, and that is effectively what *can* *appear* to happen when IRQs are
> re-enabled.
Can you explain this a bit, please? I am new to ARM and relatively new
to GCC, so I missed something and I cannot see what :)
thanks,
Alain
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