Re: long long on 32-bit machines

[H. Peter Anvin]

Paul Mackerras wrote:
> H. Peter Anvin writes:
>
>
> > Does anyone happen to know if there are *any* 32-bit architectures (on 
> > which Linux runs) for which the ABI for a "long long" is different from 
> > passing two "longs" in the appropriate order, i.e. (hi,lo) for bigendian 
> > or (lo,hi) for littleendian?
>
>
> Are you are talking about passing arguments to a function?  PPC32
> passes long long arguments in two registers in the order you would
> expect (hi, lo), BUT you have to use an odd/even register pair.  In
> other words, if you have a function like this:
>
> 	int foo(int a, long long b)
>
> then a will be passed in r3 and b will be passed in r5 and r6, and r4
> will be unused.

Does system calls follow the same convention?

	-hpa
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