70. Universal Barrel Shifter

How do you plan to solve it?

/*Write your code here*/
module univ_barrel8(
input [7:0]x,
input [2:0]sh,
input [2:0] mode,
output reg [7:0]y
);

localparam [2:0]
    m_pass=3'b000,
    m_lsl =3'b001,
    m_lsr =3'b010,
    m_asr =3'b011,
    m_rol =3'b100,
    m_ror =3'b101;

always@*
   begin
      case(mode)
      m_pass: y=x;
      m_lsl : y=(x<<sh) & 8'hFF;
      m_lsr :y=(x>>sh);
      m_asr:y=$signed(x)>>>sh;
      m_rol:y=((x<<sh) |(x>>(8-sh))) & 8'hFF;
      m_ror:y=((x>>sh) | (x<<(8-sh))) & 8'hFF;
      default: y=x;
      endcase

   end
endmodule