started naming instruction arguments properly, starting with compare

test/arm/test_compare.rb

@@ -0,0 +1,22 @@
+require_relative 'helper'
+
+class TestArmAsm < MiniTest::Test
+  include ArmHelper
+
+  def test_cmn
+    code = @machine.cmn	 :r1 , :r2
+    assert_code code , :cmn , [0x02,0x00,0x71,0xe1] #e1 71 00 02
+  end
+  def test_cmp
+    code = @machine.cmp	 :r1 , :r2
+    assert_code code , :cmp , [0x02,0x00,0x51,0xe1] #e1 51 00 02
+  end
+  def test_teq
+    code = @machine.teq  :r1 , :r2
+    assert_code code , :teq , [0x02,0x00,0x31,0xe1] #e1 31 00 02
+  end
+  def test_tst
+    code = @machine.tst  :r1 , :r2 
+    assert_code code , :tst , [0x02,0x00,0x11,0xe1] #e1 11 00 02
+  end
+end