From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <502E5830.4080205@xenomai.org>
Date: Fri, 17 Aug 2012 16:41:52 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai] Trying to get Xenomai on P1010RDB
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To: Charles Retailleau <charles.retailleau@axesseurope.com>
Cc: xenomai@xenomai.org

On 08/17/2012 04:24 PM, Charles Retailleau wrote:
> Thanks Lennart that was very useful, it now works.
> Here is the little patch I made, yet I couldn't find a switch to force
> it for core e500/e500xx only...
> 
> 
> --- ./xenomai-2.6.1.orig/include/asm-powerpc/syscall.h	2011-11-09
> 13:21:36.000000000 +0100
> +++ ./xenomai-2.6.1.mine/./include/asm-powerpc/syscall.h	2012-08-17
> 15:47:28.387435909 +0200
> @@ -167,9 +167,9 @@
>  	} u;
>  	unsigned long __tbu;
> 
> -	__asm__ __volatile__("1: mftbu %0\n"
> -			     "mftb %1\n"
> -			     "mftbu %2\n"
> +	__asm__ __volatile__("1: mfspr %0,269\n"
> +			     "mfspr %1,268\n"
> +			     "mfspr %2,269\n"
>  			     "cmpw %2,%0\n"
>  			     "bne- 1b\n":"=r"(u.v[0]),
>  			     "=r"(u.v[1]), "=r"(__tbu));
> Thanks to all for your help
> Charles,

If I understand correctly, this patch breaks old powerpcs. So, do we
have a compilation constant allowing to know whether we are compiling
for an old or new powerpc?

-- 
					    Gilles.