Re: RFA: make sim interface use gdbarch methods for collect/supply

[Daniel Jacobowitz <drow at false dot org>]

On Tue, Jul 06, 2004 at 01:42:54PM -0400, Andrew Cagney wrote:
> 
> >>>(I've attached a few of comments that go with TARGET_OBJECT, check the 
> >>>archives for qPart)
> >>>
> >>>For regsets, the ``void *buffer/long length'' pair can be replaced by a 
> >>>single ``byte array'' object.
> >>>
> >>>The regset code can then send offset/length xfer requests to that ``byte 
> >>>array''.  For cores, the byte array would extract the bytes from the 
> >>>core file; for ptrace, the byte array would extract the bytes using the 
> >>>relevant ptrace call; and for the remote inferior, the request would be 
> >>>converted into one or more qPart packets (sending the 
> >>>regset/offset/length across the wire).
> >>>
> >>>When it comes to a `T' reply, the remote inferior can push 
> >>>regset/offset/length data for parts of the regset buffer that it thinks 
> >>>are interesting.
> 
> >If I'm interpreting your answer right, it is: "don't do anything about
> >it, change the remote protocol instead", right?
> 
> No.  But going forward we've got to dig our way out of the G/T packet 
> bear trap.
> 
> >A more practical approach would probably be to maintain a mapping of
> >the remote protocol register numbers to GDB's internal register numbers
> >in addition to register sets.  I don't see any problem with that.
> 
> From memory, the only thing missing is code to parse a regformats file.

I did eventually intend for them to be used by the client.  I'll try to
find some round tuits.

-- 
Daniel Jacobowitz