70. Universal Barrel Shifter

How do you plan to solve it?

use shift operators, for rotate instructions simply write an example and see how it works

/*Write your code here*/
module univ_barrel8(
    input [7:0] x,
    input [2:0] sh, mode,
    output reg [7:0] y
);
    always @(*) begin
        case (mode)
            3'd0 : y = x;
            3'd1 : y = x << sh;
            3'd2 : y = x >> sh;
            3'd3 : y = $signed(x) >>> sh;
            3'd4 : y = (x << sh)|(x >> (8-sh));
            3'd5 : y = (x << (8-sh))|(x >> sh);
            default : y = x;
        endcase
    end
endmodule