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
    y=1'b0;
    case(mode)
    3'b000 : y=x;
    3'b001 :  y = (x << sh) & 8'hFF;
    3'b010 :  y = (x >> sh) ;
    3'b011 : y=$signed(x) >>> sh;
    3'b100 : y=((x << sh) | (x >> (8 - sh))) & 8'hFF;
    3'b101 : y=((x >> sh) | (x << (8 - sh))) & 8'hFF;
    default : y = x;
    endcase
end
endmodule