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; // PASS
            3'b001: y = (x <<  sh); // LSL 
            3'b010: y = (x >>  sh); // LSR
            3'b011: y = ($signed(x) >>> sh); // ASR
            3'b100: y = ((x << sh) | (x >> (8 - sh))) & 8'hFF; // ROL
            3'b101: y = ((x >> sh) | (x << (8 - sh))) & 8'hFF; // ROR
            3'b110: y = x; // reserved (PASS)
            3'b111: y = x; // reserved (PASS)
            default:  y = x;
        endcase

    end


endmodule