[debugger] infrastructure for side-effect-free debug-evaluate.

src/x64/macro-assembler-x64.h

Index: src/x64/macro-assembler-x64.h
diff --git a/src/x64/macro-assembler-x64.h b/src/x64/macro-assembler-x64.h
index 795ba912fad7c0b38ec8a3e436f45b06cb7928b9..c8680c85e21d9f4f398aa4027b9b577ed8bb631a 100644
--- a/src/x64/macro-assembler-x64.h
+++ b/src/x64/macro-assembler-x64.h
@@ -390,9 +390,9 @@ class MacroAssembler: public Assembler {
                           const ParameterCount& actual, InvokeFlag flag,
                           const CallWrapper& call_wrapper);
 
-  void FloodFunctionIfStepping(Register fun, Register new_target,
-                               const ParameterCount& expected,
-                               const ParameterCount& actual);
+  void CheckDebugHook(Register fun, Register new_target,

[jgruber, 2017/01/11 16:12:39]

A comment would be great.

[Yang, 2017/01/12 06:04:51]

Done.

+                      const ParameterCount& expected,
+                      const ParameterCount& actual);
 
   // Invoke the JavaScript function in the given register. Changes the
   // current context to the context in the function before invoking.