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Date: Thu, 17 Jan 2008 11:39:55 -0600
From: Scott Wood <scottwood@freescale.com>
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To: Bruce_Leonard@selinc.com
Subject: Re: Endian problem when accessing internel regs on 8347
References: <OF03A8BF8B.4AC46CCD-ON882573D3.00216F5B-882573D3.00236B8D@selinc.com>
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Bruce_Leonard@selinc.com wrote:
> As an additional question related to PowerPC inline assembly, can anyone 
> tell me what "%U1%X1" means in the following:
> 
> __asm__ __volatile__("lwz%U1%X1 %0,%1; twi 0,%0,0; isync" : "=r" (ret) : 
> "m" (*addr));

They allow the compiler to use update and/or index mode for the memory 
operand.

-Scott