for R2 interrupt handling. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2493 c046a42c-6fe2-441c-8c8c-71466251a162
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2350 c046a42c-6fe2-441c-8c8c-71466251a162