sorting mom instructions and statements into separate dirs

lib/mom/instruction/message_setup.rb

@@ -0,0 +1,27 @@
+module Mom
+
+  # Preamble when entering the method body.
+  # Acquiring the message basically.
+  #
+  # Currently messages are hardwired as a linked list,
+  # but this does not account for continuations or closures and
+  # so will have to be changed.
+  #
+  # With the current setup this maps to a single SlotMove, ie 2 risc Instructions
+  # But clearer this way.
+  #
+  class MessageSetup < Instruction
+    attr_reader :method
+
+    def initialize(method)
+        @method = method
+    end
+
+    def to_risc(compiler)
+      Risc::Label.new(self,method.name) 
+    end
+
+  end
+
+
+end