add to_asm debug output functions

lib/vm/constants.rb

@@ -22,6 +22,9 @@ module Vm
     def value
       @integer
     end
+    def to_asm
+      @integer.to_s
+    end
   end
 
   # The name really says it all.

lib/vm/instruction.rb

@@ -90,7 +90,7 @@ module Vm
       @first
     end
     def to_s
-      "#{opcode} #{@first} #{super}"
+      "#{opcode} [#{@first.collect {|f| f.to_asm}.join(',') }] #{super}"
     end
   end
   class MemoryInstruction < Instruction
@@ -131,8 +131,8 @@ module Vm
     def assigns
       [@result.used_register]
     end
-    def to_s
-      "#{opcode} #{result.register_symbol} , #{left.register_symbol} , #{right.register_symbol} #{super}"
+    def to_asm
+      "#{opcode} #{result.to_asm} , #{left.to_asm} , #{right.to_asm} #{super}"
     end
   end
   class CompareInstruction < Instruction
@@ -165,7 +165,7 @@ module Vm
       [@to.used_register]
     end
     def to_s
-      "#{opcode} #{@to.register_symbol} , #{@from.is_a?(Constant) ? @from.value : @from.register_symbol} #{super}"
+      "#{opcode} #{@to.to_asm} , #{@from.to_asm} #{super}"
     end
   end
   class CallInstruction < Instruction

lib/vm/values.rb

@@ -103,6 +103,10 @@ module Vm
     def length
       4
     end
+    # aka to string
+    def to_asm
+      "#{register_symbol}"
+    end
   end
   
   class Unsigned < Word
@@ -169,7 +173,6 @@ module Vm
       block.mov(  self ,  right )
       self
     end
-
   end
 end
 require_relative "constants"