Re: [XenPPC] [patch] Added dev64.h file provided by linux include set but not by gcc include set

[Maria Butrico <butrico@xxxxxxxxxx>]

We could expect that in my version of things __div64_32 is used only when
"#elif BITS_PER_LONG == 32".  Is this the environment under which we build
xen?

Maria Butrico    <internet or sametime: butrico@xxxxxxxxxx;     Notes:
Maria Butrico/Watson/IBM>



                                                                           
             hollisb@xxxxxxxxx                                             
             .linux.ibm.com                                                
                                                                        To 
             03/08/2006 04:01          xen-ppc-devel@xxxxxxxxxxxxxxxxxxx   
             PM                                                         cc 
                                       Maria Butrico                       
                                       <butrico@xxxxxxxxxxxxxx>            
                                                                   Subject 
                                       Re: [XenPPC] [patch] Added dev64.h  
                                       file provided by linux include set  
                                       but not by gcc include set          
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           




On Wednesday 08 March 2006 13:50, Maria Butrico wrote:
> Signed off by Maria Butrico <butrico@xxxxxxxxxxxxxx>
>
> summary:     Added dev64.h file provided by linux include set but not by
gcc
include set
>
> diff -r 1b222c9ed5d6 -r 28ea10d90b23 xen/include/asm-ppc/div64.h
> --- /dev/null          Thu Jan  1 00:00:00 1970 +0000
> +++ b/xen/include/asm-ppc/div64.h        Wed Mar  8 13:34:53 2006 -0500
> @@ -0,0 +1,18 @@
> +#ifndef __PPC_DIV64
> +#define __PPC_DIV64
> +
> +/* Copyright 2001 PPC64 Team, IBM Corp
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License
> + * as published by the Free Software Foundation; either version
> + * 2 of the License, or (at your option) any later version.
> + */
> +
> +#define do_div(n,base) ({ \
> +          int __res; \
> +          __res = ((unsigned long) (n)) % (unsigned) (base); \
> +          (n) = ((unsigned long) (n)) / (unsigned) (base); \
> +          __res; })
> +
> +#endif

Hi Maria, I'm guessing this file came from an older (pre "powerpc" arch)
Linux
tree? The current linux/include/asm-powerpc/div64.h just uses
asm-generic/div64.h, which uses __div64_32 which I think is provided to us
by
libgcc.

Could we copy asm-generic/div64.h instead?

--
Hollis Blanchard
IBM Linux Technology Center



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