Re: next from ddb gives RED state exception?

[Eduardo Horvath <eeh%NetBSD.org@localhost>]

On Fri, 13 Jun 2014, Darren Reed wrote:

> In a different experiment with "next" from ddb, I set a breakpoint in
> an ipf function, caused the breakpoint to trigger and then did "n".
> 
> Whilst the machine did not panic or give me a RED error, it is hung
> and hung hard. No response from ping and sending a BREAK to the
> console port does nothing. No response to characters on the console
> either.
> 
> Power button time.

SPARCs do not have hardware single-stepping so that operation is a complex 
combination of breakpoints and software instruction emulation.  It's not 
very reliable.  Breakpoints work much better, or at least they did the 
last time I used them.

Eduardo