Porting advice or documentation request

[Richard Earnshaw]

> Hi all,
> 
> I'm working on this new gdb port, and more than often I'm stuck. I have 
> been told that the d10v port is the most authorative template for how 
> new targets should be written. Unfortunately it is impossible to learn 
> anything about the d10v's hardware architecture on the net, so I find it 
> a bit difficult to template from.

I can sympathise.  I've tried on a couple of occasions to update the ARM 
target to use the new interfaces and I've repeatedly run into situations 
where the GDB's abstraction model is just not obvious from staring at the 
code.

Andrew, I think we really need a 10,000 ft view document on gdb's internal 
architecture to complement the list of macros that a target can define...

R.