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
);

    always @(*) begin
        case (mode)

            3'b000:   y = x;                    // PASS

            3'b001:   y = x << sh;              // LSL (logical left)

            3'b010:   y = x >> sh;              // LSR (logical right)

            3'b011:   y = $signed(x) >>> sh;    // ASR (arithmetic right)

            3'b100:   y = (x << sh) | (x >> (8 - sh));  // ROL (rotate left)

            3'b101:   y = (x >> sh) | (x << (8 - sh));  // ROR (rotate right)

            default:  y = x;                    // RESERVED → PASS
        endcase
    end

endmodule