Fix arm simulator build on Max OS X. For some reason the GCC version...

src/arm/virtual-frame-arm.h

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 358 matching lines @@
 
  private:
   static const int kLocal0Offset = JavaScriptFrameConstants::kLocal0Offset;
   static const int kFunctionOffset = JavaScriptFrameConstants::kFunctionOffset;
   static const int kContextOffset = StandardFrameConstants::kContextOffset;
 
   static const int kHandlerSize = StackHandlerConstants::kSize / kPointerSize;
   static const int kPreallocatedElements = 5 + 8;  // 8 expression stack slots.
 
   // 5 states for the top of stack, which can be in memory or in r0 and r1.
-  enum TopOfStack { NO_TOS_REGISTERS, R0_TOS, R1_TOS, R1_R0_TOS, R0_R1_TOS,
-                    TOS_STATES};
+  enum TopOfStack { 
+    NO_TOS_REGISTERS, 
+    R0_TOS,
+    R1_TOS,
+    R1_R0_TOS,
+    R0_R1_TOS,
+    TOS_STATES
+  };
+
   static const int kMaxTOSRegisters = 2;
 
   static const bool kR0InUse[TOS_STATES];
   static const bool kR1InUse[TOS_STATES];
   static const int kVirtualElements[TOS_STATES];
   static const TopOfStack kStateAfterPop[TOS_STATES];
   static const TopOfStack kStateAfterPush[TOS_STATES];
   static const Register kTopRegister[TOS_STATES];
   static const Register kBottomRegister[TOS_STATES];
 
@@ skipping 68 matching lines @@
   inline bool Equals(VirtualFrame* other);
 
   friend class JumpTarget;
   friend class DeferredCode;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_VIRTUAL_FRAME_ARM_H_