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

Pedro Alves
2012-11-27T17:04:24Z

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