bitconv.vbe

i need of vhdl code for 32-bit risc processor

ENTITY bitconv IS
PORT (
bit1 : IN BIT;
bit2 : IN BIT;
bit3 : IN BIT;
outvec : OUT bit_vector(2 downto 0)
);
END bitconv;

ARCHITECTURE bitconv_arch OF bitconv IS

BEGIN
 with bit3&bit2&bit1 select
 outvec <= b"000" when b"000",
       b"001" when b"001",
       b"010" when b"010",
       b"011" when b"011",
       b"100" when b"100",
       b"101" when b"101",
       b"110" when b"110",
       b"111" when b"111";
END;