Manually randomize the memory addresses for regions of JIT code in the Large ...

src/platform.h

Index: src/platform.h
===================================================================
--- src/platform.h	(revision 5136)
+++ src/platform.h	(working copy)
@@ -282,6 +282,18 @@
  private:
   static const int msPerSecond = 1000;
 
+  // The address range used to randomize RWX allocations in OS::Allocate
+  // Try not to map pages into the default range that windows loads DLLs
+  // Note: This does not guarantee RWX regions will be within the
+  // range kAllocationRandomAddressMin to kAllocationRandomAddressMax
+#ifdef V8_HOST_ARCH_64_BIT
+  static const intptr_t kAllocationRandomAddressMin = 0x0000000080000000;
+  static const intptr_t kAllocationRandomAddressMax = 0x000004FFFFFFFFFF;
+#else
+  static const intptr_t kAllocationRandomAddressMin = 0x04000000;
+  static const intptr_t kAllocationRandomAddressMax = 0x4FFFFFFF;
+#endif
+
   DISALLOW_IMPLICIT_CONSTRUCTORS(OS);
 };