How to get CPU-Specific Info?

[Frank Kastenholz <fkastenh%bbn.com@localhost>]

Hi

The project I'm working on uses the (new) P2020 port
of NetBSD. For various reasons, I'd like to be able to
read the contents of all the internal configuration/etc
registers on the processor (some are general PPC/Booke
regs, some are specific to the 2020).

This code does not exist ---I realize I'll have to
write it. The question I have is whether there is
a machine-independant framework/scheme for retrieving this sort
of info into which processor-specific code would
actually get the info/etc/etc/etc?

There is /proc/cpuinfo --- but this seems to be
oriented more towards things like versions/features/
etc of the actual silicon.  I could add the stuff
I want to this.  Or I could make a new /proc file
(eg "/proc/cpucsrs")

Thanks
Frank Kastenholz
BBN