Add a level of indirection to exception handler addresses.

src/arm/macro-assembler-arm.h

 // Copyright 2011 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 531 matching lines @@
   // ---------------------------------------------------------------------------
   // Debugger Support
 
   void DebugBreak();
 #endif
 
   // ---------------------------------------------------------------------------
   // Exception handling
 
   // Push a new try handler and link into try handler chain.
-  // The return address must be passed in register lr.
-  // On exit, r0 contains TOS (code slot).
-  void PushTryHandler(CodeLocation try_location, HandlerType type);
+  void PushTryHandler(CodeLocation try_location,
+                      HandlerType type,
+                      int handler_index);
 
   // Unlink the stack handler on top of the stack from the try handler chain.
   // Must preserve the result register.
   void PopTryHandler();
 
   // Passes thrown value (in r0) to the handler of top of the try handler chain.
   void Throw(Register value);
 
   // Propagates an uncatchable exception to the top of the current JS stack's
   // handler chain.
@@ skipping 747 matching lines @@
 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__)
 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_MACRO_ASSEMBLER_ARM_H_