1/*
2 * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24#ifndef OS_CPU_LINUX_X86_GC_Z_ZGLOBALS_LINUX_X86_HPP
25#define OS_CPU_LINUX_X86_GC_Z_ZGLOBALS_LINUX_X86_HPP
26
27//
28// Page Allocation Tiers
29// ---------------------
30//
31// Page Type Page Size Object Size Limit Object Alignment
32// ------------------------------------------------------------------
33// Small 2M <= 265K <MinObjAlignmentInBytes>
34// Medium 32M <= 4M 4K
35// Large X*M > 4M 2M
36// ------------------------------------------------------------------
37//
38const size_t ZPlatformGranuleSizeShift = 21; // 2MB
39const size_t ZPlatformMaxHeapSizeShift = 46; // 16TB
40const size_t ZPlatformNMethodDisarmedOffset = 4;
41const size_t ZPlatformCacheLineSize = 64;
42
43uintptr_t ZPlatformAddressSpaceStart();
44uintptr_t ZPlatformAddressSpaceEnd();
45uintptr_t ZPlatformAddressReservedStart();
46uintptr_t ZPlatformAddressReservedEnd();
47uintptr_t ZPlatformAddressBase();
48size_t ZPlatformAddressOffsetBits();
49size_t ZPlatformAddressMetadataShift();
50
51#endif // OS_CPU_LINUX_X86_GC_Z_ZGLOBALS_LINUX_X86_HPP
52