[rfa:sim/arm,arm] Add include/gdb/sim-arm.h

[Andrew Cagney]

> Hello,
>> 
>> The attached patch better pins down the ARM <-> SIM interface by 
>> introducing an enum to specify the register numbers to be used across 
>> the interface.
>> 
>> Ok?
>> 
>> I guess I need to get the sim/arm and arm-tdep maintainers to both agree 
>> agree with each other and agree to the change :-)
> 
> 
> It looks ok to me, if Nick is also happy with it.
> 
> Of course, I'll have to change it all when I add the privileged mode 
> registers ;-)

That's the idea.  At least you can now change it all without breaking it 
all :-)

Nick?

Andrew