I have some problem. I have an application built for Netlogic XLP MIPS64. It contains some instructions are not included in the standard. Because of edits on the Internet I found only the mnemonic code and instructions (https://lists.nongnu.org/archive/html/qemu-devel/2015-03/msg05442.html for example). But what they do – a big mystery. Who can tell where to get the description of these instructions?