Make the m5 pseudo instructions only work in FS. Also, make sure any undefined opcodes in impdep2 (which in SE is all of them) trap with an illegal_instruction exception.
Make the m5 pseudo instructions only work in FS. Also, make sure any undefined opcodes in impdep2 (which in SE is all of them) trap with an illegal_instruction exception.

--HG--
extra : convert_revision : dd7848d0685e4cc6f5fd5e3b846a3f70b62ee30a

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