xor2gate.pat%

i need of vhdl code for 32-bit risc processor

in a5 B;
in b5 B;
out d5 B;

begin
pat_0 :0 0  ?0;
pat_1 :0 0  ?1;
pat_2 :0 1  ?1;
pat_3 :1 1  ?0;

end;