Disable Root Counter 2 EvCB

00017c3c: 3c028003 lui r2,0x8003
00017c40: 94422a54 lhu r2,0x2a54(r2)                  # encoded instruction
00017c44: 27bdffe8 addiu r29,r29,0xffe8
00017c48: 30420001 andi r2,r2,0x0001
00017c4c: 1040000b beq r2,r0,0x00017c7c               # end if root counter 2 event already disabled
00017c50: afbf0010 sw r31,0x0010(r29)
00017c54: 3c048003 lui r4,0x8003
00017c58: 8c842a5c lw r4,0x2a5c(r4)                   # root counter 2 EvCB
00017c5c: 0c0087f1 jal 0x00021fc4                     # DisableEvent
00017c60: 00000000 nop
00017c64: 3c028003 lui r2,0x8003
00017c68: 94422a54 lhu r2,0x2a54(r2)
00017c6c: 00000000 nop
00017c70: 3042fffe andi r2,r2,0xfffe                  # set root counter 2 event disabled
00017c74: 3c018003 lui r1,0x8003
00017c78: a4222a54 sh r2,0x2a54(r1)
00017c7c: 8fbf0010 lw r31,0x0010(r29)
00017c80: 27bd0018 addiu r29,r29,0x0018
00017c84: 03e00008 jr r31
00017c88: 00000000 nop