cop_op
[insn_eret] = {M(cop0_op, cop_op, 0, 0, 0, eret_op), 0},
[insn_rfe] = {M(cop0_op, cop_op, 0, 0, 0, rfe_op), 0},
[insn_tlbp] = {M(cop0_op, cop_op, 0, 0, 0, tlbp_op), 0},
[insn_tlbr] = {M(cop0_op, cop_op, 0, 0, 0, tlbr_op), 0},
[insn_tlbwi] = {M(cop0_op, cop_op, 0, 0, 0, tlbwi_op), 0},
[insn_tlbwr] = {M(cop0_op, cop_op, 0, 0, 0, tlbwr_op), 0},
[insn_wait] = {M(cop0_op, cop_op, 0, 0, 0, wait_op), SCIMM},