Re: [Patch 5/7]: 68HC11 port of gdb (sim-overlap address maps)

[Stephane Carrez <Stephane dot Carrez at worldnet dot fr>]

Hi!

Thanks a lot for integration of the patches!

Andrew Cagney a écrit :
> 
> Stephane Carrez wrote:
> >
> > Hi!
> >
> > The following patch adds the support to overlap some address spaces.
> > I need this for 68hc11 because the IO is mapped over the normal memory.
> > The internal RAM is mapped in the same way. Both may be moved at any
> > 4K boundary. The EEPROM can be unmapped, showing up what is underneath it.
> >
> > Each device has an overlap flag that tells whether overlapping is
> > allowed or not. The default is to disable that. This is the current
> > behavior.
> >
> > When overlapping is allowed, we just record the mapping rather than
> > rejecting it.
> 
> I'm not sure I understand the change.  The memory model has the idea of
> layers.  Overlapping memory can normally be handled by that.  The memory
> would be set up as:
> 
>         first layer:    eeprom
>         second layer:   memory
> 
> is this in addition to the layers?
> 
>         Andrew

Ok. I didn't understand the role of the level. It's not easy to guess that...:-)

If what I understand now is right, I should be able to do the overlapping I need.

Thanks,
	Stephane

-----------------------------------------------------------------------
         Home                               Office
E-mail: stcarrez@worldnet.fr               Stephane.Carrez@sun.com
WWW:    http://home.worldnet.fr/stcarrez   http://www.sun.com
Mail:   17, rue Foucher Lepelletier        6, avenue Gustave Eiffel
        92130 Issy Les Moulineaux          78182 Saint Quentin en Yvelines
        France