From 6f0ae51dc5161eec57f05532d979d1932c84c5a2 Mon Sep 17 00:00:00 2001
From: Torsten Ruger <torsten@villataika.fi>
Date: Sun, 24 May 2015 15:07:07 +0300
Subject: [PATCH] move register constants here

---
 lib/register/register_reference.rb | 29 +++++++++++++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

diff --git a/lib/register/register_reference.rb b/lib/register/register_reference.rb
index 4fd71d58..c0d0078f 100644
--- a/lib/register/register_reference.rb
+++ b/lib/register/register_reference.rb
@@ -1,7 +1,7 @@
 module Register
 
-  # RegisterReference is not the name for a register, "only" for a certain use of it. 
-  # In a way it is like a variable name, a storage location. The location is a register off course, 
+  # RegisterReference is not the name for a register, "only" for a certain use of it.
+  # In a way it is like a variable name, a storage location. The location is a register off course,
   # but which register can be changed, and _all_ instructions sharing the RegisterReference then use that register
   # In other words a simple level of indirection, or change from value to reference sematics.
 
@@ -28,6 +28,31 @@ module Register
       sym = "r#{int + by}".to_sym
       RegisterReference.new( sym )
     end
+
+    SELF_REG = :r0
+    MESSAGE_REG = :r1
+    FRAME_REG = :r2
+    NEW_MESSAGE_REG = :r3
+
+    TMP_REG = :r4
+
+    def self.self_reg
+      new SELF_REG
+    end
+    def self.messsage_reg
+      new MESSAGE_REG
+    end
+    def self.frame_reg
+      new FRAME_REG
+    end
+    def self.new_messsage_reg
+      new NEW_MESSAGE_REG
+    end
+    def self.tmp_reg
+      new TMP_REG
+    end
+
+
   end
 
 end