-mmultiply-enabled
Enable multiply instructions.
-mdivide-enabled
Enable divide instructions.
-mbarrel-shift-enabled
Enable barrel-shift instructions.
-msign-extend-enabled
Enable sign extend instructions.
-muser-enabled
Enable user defined instructions.
-micache-enabled
Enable instruction cache related CSRs.
-mdcache-enabled
Enable data cache related CSRs.
-mbreak-enabled
Enable break instructions.
-mall-enabled
Enable all instructions and CSRs.