fix interpreter

by currently not checking for old register pattern
feels like wip, but passes (all but one)

lib/arm/translator.rb

@@ -66,6 +66,7 @@ module Arm
     end
 
     def translate_FunctionReturn( code )
+      # FIXME reduce the int first, register contains a ReturnAddress
       ArmMachine.mov( :pc , code.register)
     end
     def translate_DynamicJump(code)

lib/parfait/integer.rb

@@ -61,7 +61,7 @@ module Parfait
   # But the integer (address) needs to be adjusted by load address.
   class ReturnAddress < Integer
 
-    def to_s
+    def to_s(ignored = nil)
       "ReturnAddress 0x" + object_id.to_s(16) + ":" + value.to_s
     end
   end

lib/risc/interpreter.rb

@@ -70,7 +70,7 @@ module Risc
 
     def get_register( reg )
       reg = reg.symbol if reg.is_a? Risc::RegisterValue
-      raise "Not a register #{reg}" unless Risc::RegisterValue.look_like_reg(reg)
+      #raise "Not a register #{reg}" unless Risc::RegisterValue.look_like_reg(reg)
       @registers[reg]
     end
 
@@ -236,7 +236,7 @@ module Risc
     def execute_FunctionReturn
       link = get_register( @instruction.register )
       log.debug "Return to #{link.to_s(16)}"
-      set_pc link
+      set_pc link.value
       false
     end