Re: [PATCH] Support targets that know how to step over breakpoints

[Pedro Alves <palves@redhat.com>]

On 11/27/2012 03:20 PM, Luis Machado wrote:

> Meanwhile i've updated this patch for the latest cvs head.
> 
> I'm wondering if the patch is too ugly for someone to take a look at it or if it is too odd a feature to add. I suppose not.
> 
> Hopefully i can get some traction with this new refreshed and shiny version! :-)

I was hoping others could comment.  :-)

Last we discussed this (probably a years ago already), I expressed my
concern with upstreaming this as is.  It's that this works by sending a regular
step command to the target, and then the target steps over any breakpoint that
may be at the current PC.  If GDB is wanting to move past a breakpoint, this still
needs to do:

 -> vCont;s
 <- T05  (step finished)
 <- vCont;c

An alternative would be to get rid of that T05, by defining new commands that
tell the target to step-over-breakpoint, or continue-over-breakpoint (and signal
variants).  E.g., sbc to mean step-break-continue:

 -> vCont;spc

That'd move past the breakpoint without causing a stop immediately.

Guess I need to convince myself the current design is good enough.  Comments?

-- 
Pedro Alves