leftdecide.pat

i need of vhdl code for 32-bit risc processor

in valin ( 4 to 0) B;
in val1a (4 to 0) B;
in val2a (4 to 0) B;
in val3a ( 4 to 0 ) B;
in val4a ( 4 to 0 ) B;
out out1a (4 to 0) B;
out expout (2 to 0) B;

begin
p0 : 01000 10000 00000 00000 00000 ?10000 ?001;
p1:  00010 00100 01000 10000 00000 ?10000 ?011;
p2 : 11111 11110 11100 11000 10000 ?11111 ?000; 
p4:  10111 01110 11100 11000 10000 ?10111 ?000;
end;