--- a/python/ppci/target/arm/instructions.py	Sun Mar 09 11:55:55 2014 +0100
+++ b/python/ppci/target/arm/instructions.py	Sun Mar 09 18:49:10 2014 +0100
@@ -25,11 +25,17 @@
         self.token = ArmToken()
 
 
-class Dcd(ArmInstruction):
+class ConstantData(ArmInstruction):
     def __init__(self, v):
         super().__init__()
+        assert isinstance(v, int)
         self.v = v
 
+    def __repr__(self):
+        return 'DCD {}'.format(hex(self.v))
+
+
+class Dcd(ConstantData):
     def encode(self):
         self.token[0:32] = self.v
         return self.token.encode()
@@ -38,6 +44,15 @@
         return 'DCD {}'.format(hex(self.v))
 
 
+class Db(ConstantData):
+    def encode(self):
+        assert self.v < 256
+        return bytes([self.v])
+
+    def __repr__(self):
+        return 'DB {}'.format(hex(self.v))
+
+
 def Mov(*args):
     if len(args) == 2:
         if isinstance(args[1], int):