--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/cpu/x86/gc/z/zGlobals_x86.hpp Thu Oct 17 20:53:35 2019 +0100
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#ifndef CPU_X86_GC_Z_ZGLOBALS_X86_HPP
+#define CPU_X86_GC_Z_ZGLOBALS_X86_HPP
+
+//
+// Page Allocation Tiers
+// ---------------------
+//
+// Page Type Page Size Object Size Limit Object Alignment
+// ------------------------------------------------------------------
+// Small 2M <= 265K <MinObjAlignmentInBytes>
+// Medium 32M <= 4M 4K
+// Large X*M > 4M 2M
+// ------------------------------------------------------------------
+//
+const size_t ZPlatformGranuleSizeShift = 21; // 2MB
+const size_t ZPlatformNMethodDisarmedOffset = 4;
+const size_t ZPlatformCacheLineSize = 64;
+
+uintptr_t ZPlatformAddressBase();
+size_t ZPlatformAddressOffsetBits();
+size_t ZPlatformAddressMetadataShift();
+
+#endif // CPU_X86_GC_Z_ZGLOBALS_X86_HPP