remote debugging packets

[Manoj Verma, Noida]

> -----Original Message-----
> From: Mark Salter [mailto:msalter@redhat.com]
> Sent: Friday, November 21, 2003 7:56 PM
> To: manojv@noida.hcltech.com
> Cc: gdb@sources.redhat.com
> Subject: Re: remote debugging packets
> 
> 
> >>>>> Manoj Verma, Noida writes:
> 
> > My question is, 
> > 1) I did the "step" only once but why there are three 
> packets (sometimes two
> > packets) corresponding to the "step" ($s#73...Ack) as shown below in
> > sanpshot-1, evenif the correct response is received for the 
> first packet. 
> 
> "step" is used to step past a line of source code. The $s packet tells
> the target to step past a machine instruction. Apparently in 
> this case,
> the source code line corresponds to three machine instructions.
> 

This is fine.

> > 2) On the Gdb client side when I continue, "(gdb) 
> continue", why it first
> > sends a packet ($s#73...Ack) and then the packet 
> ($c#63...Ack) as shown
> > below in sanpshot-2 ? It should only send the packet ($c#63...Ack).
> 
> This is expected. GDB has to single-step past the one machine 
> instruction
> before re-inserting any breakpoints and continuing.
> 

But consider the scenario when I have breakpoints set on two consecutive
lines. Will in this case also this behavior is justified?

> --Mark
>