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Date: Tue, 09 Oct 2007 07:53:00 -0000
From: Phil Muldoon <pmuldoon@redhat.com>
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To: Andrew Cagney <cagney@redhat.com>
CC: Frysk Hackers <frysk@sourceware.org>
Subject: Re: ISA checks for factories
References: <4703549C.30709@redhat.com> <4703F084.8050301@redhat.com>
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Andrew Cagney wrote:
> Phil,
>
> There is now also:
>    ISA isa = task.getISA()
> which returns a frysk.isa.ISA, which looks smells and behaves like an 
> ENUM.  This new ISA just the following attributes:
>   - family (i386, x8664, PPC)
>   - word size (4, 8)
>   - byte order (little, big)
> leading to the combinations: IA32, X8664, PPC32LE, PPC32BE, PPC64LE, 
> PPC64BE.
>

Ok that makes sense, I got that from the original email, but ...


> or better?:
>
>   ISAMap map = new ISAMap("why am I here")
>       .put(ISA.IA32, new My(IA32))
>       .put(ISA.X8664, new My(X8664))
>       ;
>   ...
>       // Throws a RuntimeException if ISA missing
>       My o = (My) map.get(task.getISA);
>
>
I'm still a little fuzzy on how it can be used to detected IA 32 on 64, 
or PPC32 On 64?

Regards

Phil