Re: i386 and x86-64 bitops function prototypes differ

[H. Peter Anvin]

Stephane Eranian wrote:
> Hello,
>
> I ran into compiler warnings with the perfmon code when I tried
> using test() and __set_bit() on i386. 
>
> For some reason, the i386 bitops functions use unsigned long * for
> the address whereas x86-64/ia64 use void *.
>
> I do not quite understand why such difference?
> Is this just for historical reasons?
>
> Thanks.

Arguably void * is the right thing for a littleendian architecture.  For 
bigendian architectures it unfortunately matters what the chunk size is, 
regardless of if the chunks are numbered in bigendian (reverse) or 
littleendian (forward) order.

	-hpa
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