70. Universal Barrel Shifter

How do you plan to solve it?

module univ_barrel8(
    input [7:0]x,
    input [2:0]sh,mode,
    output reg [7:0]y
);
    always@(*)begin
        case(mode)
        3'b000 : y <= x;                       //passing value
        3'b001 : y <= x << sh;                 //Logical left
        3'b010 : y <= x >> sh;                 //Logical right
        3'b011 : y <= $signed(x) >>> sh;       //arithmetic right,sign-extend
        3'b100 : y <= ({x,x}<<sh) >> 8;        //Rotate left
        3'b101 : y <= ({x,x}>>sh) & 8'hFF;     //Rotate right
        3'b110,3'b111: y = x;                  //Reserved
        default: y = x;                  
        endcase
    end
endmodule