Remote watchpoint support.

[Mark Salter]

>>>>> Eli Zaretskii writes:

>> From: jtc@redback.com (J.T. Conklin)
>> Date: 30 Oct 2000 12:39:53 -0800
>> 
>> One thing I dislike about it is that the debug agent never explicitly
>> tells GDB that a watchpoint has been hit, but rather it is implicitly
>> coded in the return value of the query.

> I agree that this is not a good design.

Ok. It seems pretty clear that there is consensus on getting the watchpoint
data address (and possibly other info) when the target stops and not through
a separate query packet. I will try to work up a patch today that does this.
I will probably limit it to the 'T' packet for now. The 'T' packet is already
documented as being extendible for this sort of thing.

--Mark