adding integer compare tests and fixing returns

true, false and nll were not handled correctly as returns
returns assume int, and reduce. The solution (hack?) is to add fake numbers into true,false and nil that get returned from from the arm syscall
(and it works!, which means i can fix other tests now)

lib/risc/text_writer.rb

@@ -155,7 +155,17 @@ module Risc
     def write_data4( code )
       write_ref_for( code.get_type )
       write_ref_for( code.get_type )
-      write_ref_for( code.get_type )
+      case code
+      when Parfait::NilClass , nil
+        fake_int = 0
+      when Parfait::TrueClass , true
+        fake_int = 1
+      when Parfait::FalseClass , false
+        fake_int = 0
+      else
+        fake_int = code.get_type
+      end
+      write_ref_for( fake_int )
       write_ref_for( code.get_type )
       log.debug "Data4 witten stream 0x#{@stream.length.to_s(16)}"
     end
@@ -202,15 +212,19 @@ module Risc
 
     # write means we write the resulting address straight into the assembler stream
     # object means the object of which we write the address
-    def write_ref_for object
+    def write_ref_for( object )
+      if(object.is_a?( ::Integer) )
+        return @stream.write_signed_int_32(object)
+      end
       case object
       when nil
-        @stream.write_signed_int_32(0)
-      when ::Integer
-        @stream.write_signed_int_32(object)
-      else
-        @stream.write_signed_int_32(Position.get(object) + @linker.platform.loaded_at)
+        object = Parfait.object_space.nil_object
+      when true
+        object = Parfait.object_space.true_object
+      when false
+        object = Parfait.object_space.nil_object
       end
+      @stream.write_signed_int_32(Position.get(object) + @linker.platform.loaded_at)
     end
 
     # pad_after is always in bytes and pads (writes 0's) up to the next 8 word boundary