Add the infrastructure needed to enable exception handling in selftests.
This allows any of the exception and interrupt vectors to be overridden
in the guest.
Signed-off-by: NAaron Lewis <aaronlewis@google.com>
Reviewed-by: NAlexander Graf <graf@amazon.com>
Message-Id: <20201012194716.3950330-4-aaronlewis@google.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>