K 10 svn:author V 4 neel K 8 svn:date V 27 2011-05-20T02:08:05.362602Z K 7 svn:log V 267 Avoid unnecessary sign extension when promoted to a 64-bit integer. This was benign because the interruption info field is a 32-bit quantity and the hardware guarantees that the upper 32-bits are all zeros. But it did make reading the objdump output very confusing. END