func , XLEN=64 , XLEN=32 , XLEN=16 , XLEN=8
-extsb, 0xffffffffffffff93 , 0xffffff93 , 0xff93 , 0x93
+extsb, 0xFFFFFFFFFFFFFF93 , 0xFFFFFF93 , 0xFF93 , 0x93
extsh, 0x0000000000000A93 , 0x00000A93 , 0x0A93 , 0x93
-extsw, 0xffffffff90000A93 , 0x90000A93 , 0x0A93 , 0x93
-
+extsw, 0xFFFFFFFF90000A93 , 0x90000A93 , 0x0A93 , 0x93