/*
     * Unconditional branch, 16-bit offset.
     *
     * The branch distance is a signed code-unit offset, which we need to
     * double to get a byte offset.
     */
    /* goto/16 +AAAA */
    lh      rINST, 2(rPC)               # rINST <- offset (sign-extended AAAA)
    b       MterpCommonTakenBranchNoFlags