Daniel Jacobowitz wrote:

Software breakpoints have worked at least as far back as 2.4.2.  This
most likely means that the exception handling for your board is broken.

Sorry, originally misinterpretted your use of "board" as referring to
the board itself, and perhaps PMON (I've found a number of references
online to GDB talking to PMON, but not much else). 

So what I've found by looking at other board-specific code revolves
around GDB talking to an in-kernel stub via the serial port. As the
board I'm working with has an unreliable serial port (and some
incarnations don't even have that), what about ethernet-based
debugging? Is that do-able, say via putDebugChar() (although I suspect
this poses an initialization problem)? 

Thanks for the info so far. 

-- 
-------------------------------------------------
Justin Wojdacki        
justin.wojdacki@analog.com         (408) 350-5032
Communications Processors Group -- Analog Devices