70. Universal Barrel Shifter

How do you plan to solve it?

module univ_barrel8 (
    input  wire [7:0] x,
    input  wire [2:0] sh,
    input  wire [2:0] mode,
    output reg  [7:0] y
);

always @(*) begin
    case (mode)

        // PASS
        3'b000: begin
            y = x;
        end

        // Logical Shift Left (LSL)
        3'b001: begin
            y = x << sh;
        end

        // Logical Shift Right (LSR)
        3'b010: begin
            y = x >> sh;
        end

        // Arithmetic Shift Right (ASR)
        3'b011: begin
            y = $signed(x) >>> sh;
        end

        // Rotate Left (ROL)
        3'b100: begin
            y = (x << sh) | (x >> (8 - sh));
        end

        // Rotate Right (ROR)
        3'b101: begin
            y = (x >> sh) | (x << (8 - sh));
        end

        // Reserved modes -> PASS
        3'b110,
        3'b111: begin
            y = x;
        end

        default: begin
            y = x;
        end

    endcase
end

endmodule