runtime/interpreter/mterp/mips/op_move.S

%def op_move(is_object="0"):
    /* for move, move-object, long-to-int */
    /* op vA, vB */
    GET_OPB(a1)                            #  a1 <- B from 15:12
    GET_OPA4(a0)                           #  a0 <- A from 11:8
    FETCH_ADVANCE_INST(1)                  #  advance rPC, load rINST
    GET_VREG(a2, a1)                       #  a2 <- fp[B]
    GET_INST_OPCODE(t0)                    #  t0 <- opcode from rINST
    .if $is_object
    SET_VREG_OBJECT_GOTO(a2, a0, t0)       #  fp[A] <- a2
    .else
    SET_VREG_GOTO(a2, a0, t0)              #  fp[A] <- a2
    .endif