Cleanup the way the debugger stores live registers when entering at a break...

src/arm/code-stubs-arm.cc

 // Copyright 2010 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 2684 matching lines @@
   STATIC_ASSERT(((kFailureTag + 1) & kFailureTagMask) == 0);
   // Lower 2 bits of r2 are 0 iff r0 has failure tag.
   __ add(r2, r0, Operand(1));
   __ tst(r2, Operand(kFailureTagMask));
   __ b(eq, &failure_returned);
 
   // Exit C frame and return.
   // r0:r1: result
   // sp: stack pointer
   // fp: frame pointer
-  __ LeaveExitFrame(mode_);
+  __ LeaveExitFrame();
 
   // check if we should retry or throw exception
   Label retry;
   __ bind(&failure_returned);
   STATIC_ASSERT(Failure::RETRY_AFTER_GC == 0);
   __ tst(r0, Operand(((1 << kFailureTypeTagSize) - 1) << kFailureTagSize));
   __ b(eq, &retry);
 
   // Special handling of out of memory exceptions.
   Failure* out_of_memory = Failure::OutOfMemoryException();
@@ skipping 28 matching lines @@
   // cp: current context  (C callee-saved)
 
   // Result returned in r0 or r0+r1 by default.
 
   // NOTE: Invocations of builtins may return failure objects
   // instead of a proper result. The builtin entry handles
   // this by performing a garbage collection and retrying the
   // builtin once.
 
   // Enter the exit frame that transitions from JavaScript to C++.
-  __ EnterExitFrame(mode_);
+  __ EnterExitFrame();
 
   // r4: number of arguments (C callee-saved)
   // r5: pointer to builtin function (C callee-saved)
   // r6: pointer to first argument (C callee-saved)
 
   Label throw_normal_exception;
   Label throw_termination_exception;
   Label throw_out_of_memory_exception;
 
   // Call into the runtime system.
@@ skipping 2004 matching lines @@
   __ bind(&string_add_runtime);
   __ TailCallRuntime(Runtime::kStringAdd, 2, 1);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM