Patch CEntry stub to swallow exception if liveedit/restart frame needs it.

src/x64/code-stubs-x64.cc

 // Copyright 2013 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 3709 matching lines @@
   JumpIfOOM(masm, rax, kScratchRegister, &already_have_failure);
   __ movq(rax, Failure::OutOfMemoryException(0x1), RelocInfo::NONE64);
   __ bind(&already_have_failure);
   __ Store(pending_exception, rax);
   // Fall through to the next label.
 
   __ bind(&throw_termination_exception);
   __ ThrowUncatchable(rax);
 
   __ bind(&throw_normal_exception);
+
+#ifdef ENABLE_DEBUGGER_SUPPORT
+  Label proceed_throwing;
+  ExternalReference c_entry_frame_to_ignore_exception =
+      ExternalReference(Debug_Address::CEntryFrameToIgnoreException(),
+          masm->isolate());
+  Operand c_entry_frame_to_ignore_exception_operand =
+      masm->ExternalOperand(c_entry_frame_to_ignore_exception);
+
+  __ cmpq(rbp, c_entry_frame_to_ignore_exception_operand);
+  __ j(not_equal, &proceed_throwing);
+  __ Set(c_entry_frame_to_ignore_exception_operand, 0);
+  __ LeaveExitFrame(save_doubles_);
+  __ ret(0);
+
+  __ bind(&proceed_throwing);
+#endif  // ENABLE_DEBUGGER_SUPPORT
+
   __ Throw(rax);
 }
 
 
 void JSEntryStub::GenerateBody(MacroAssembler* masm, bool is_construct) {
   Label invoke, handler_entry, exit;
   Label not_outermost_js, not_outermost_js_2;
 
   ProfileEntryHookStub::MaybeCallEntryHook(masm);
 
@@ skipping 2806 matching lines @@
   __ bind(&fast_elements_case);
   GenerateCase(masm, FAST_ELEMENTS);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64