tree a53c70b553363ce404ff49cb49ccc532cf4c7e78
parent 5cbad0ebf45c5417104b383dc0e34f64fa7f2473
author Jason Wessel <jason.wessel@windriver.com> 1216830615 -0500
committer Jason Wessel <jason.wessel@windriver.com> 1216830615 -0500

kgdb, powerpc: arch specific powerpc kgdb support

This patch removes the old kgdb reminants from ARCH=powerpc and
implements the new style arch specific stub for the common kgdb core
interface.

It is possible to have xmon and kgdb in the same kernel, but you
cannot use both at the same time because there is only one set of
debug hooks.

The arch specific kgdb implementation saves the previous state of the
debug hooks and restores them if you unconfigure the kgdb I/O driver.
Kgdb should have no impact on a kernel that has no kgdb I/O driver
configured.

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>