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Date: Wed, 06 Apr 2005 15:37:33 -0600
From: Chris Friesen <cfriesen@nortel.com>
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To: Gabriel Paubert <paubert@iram.es>
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Cc: linuxppc-dev@ozlabs.org
Subject: Re: question on inline assembly and long long values
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Gabriel Paubert wrote:
> On Wed, Apr 06, 2005 at 02:01:20PM -0600, Chris Friesen wrote:

>>static inline unsigned long long getmsr()
>>{
>>	unsigned long long val;
>>        asm volatile( \
>>                "mfmsr  %L0               \n\t" \
>>                "rldicl %0,%L0,32,32       \n\t" \
>>                "rldicl %L0,%L0,0,32        \n\t" \
>>                : "=r" (val));
>>	return val;
>>}

> If you are running in 32 bit mode, you don't need
> to clear the upper half of %L0.

Thanks for the tip.  That cuts out another instruction.

Chris