RE: gdb-serial: inform gdb that target has changed

["Jakob Engblom" <jakob at virtutech dot com>]

> Hi Jakob,
> 
> I'd like to know more about the context, but my first suggestion
> is probably going to be the same in any event -- have you tried
> this command instead of disconnect?
> 
>      (gdb) help flushregs
>      Force gdb to flush its register cache (maintainer command)
> 
> 
> After this command, if you give "frame", or any other command
> that causes gdb to need to know where the target is, gdb will
> fetch the registers afresh.

We need this to be invoked from the target, across gdb-serial connections. 

> Now as to your context, and my questions...
> 
> Is this something that is happening when gdb is "at the prompt"?
> 
> Of course, in normal (sync) mode, gdb assumes that nothing is
> happening on the target while we sit at the gdb prompt.

Yes. 

Sice Simics has its own parallel command-line, we can be stepping the target,
changing memory and register contents, and do other things as gdb is sitting at
prompt waiting for commands.  

So a simple gdb-serial backwards command to notify gdb that the target has
changed and that all state should be updated would be the simple perfect
solution for us.


Best regards,

/jakob

_______________________________________________________

Jakob Engblom, PhD, Technical Marketing Manager

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