[patch][rfc] New SID Targets: sh-elf and sh64-elf

[Dave Brolley]

This patch has now been committed. I will add myself as the maintainer 
of this port.

Dave Brolley wrote:
> Hi,
>
> Pending approval of the corresponding CGEN changes, I would like to 
> commit the following which implements a cgen-cpu component for the 
> targets sh-elf and sh64-elf. This component features full pipeline 
> modelling for all sh machines.
>
> I have a 7MB tar ball of the new sid/component/cgen-cpu/sh directory. 
> What's the best way to post it?
>
> The sh-elf target supports the following machines (use the --board 
> option on the SID command line) which correspond to the equivalent 
> -mconfig options supported by gcc:
>
>    sh (defaults to sh2), sh2
>    sh2e
>    sh2a, sh2a-nofpu, sh2a-single-only, sh2a-single, sh2a-fpu
>    sh3,
>    sh3e,
>    sh4, sh4-nofpu, sh4-single-only, sh4-single
>    sh4a, sh4a-nofpu, sh4a-single-only, sh4a-single
>    sh4al
>
> The sh64-elf target supports all the machines supported by sh-elf and 
> also:
>
>    sh5 (defaults to sh5-compact), sh5-compact
>    sh5-32media
>    sh5-64media
>