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 // 38 const size_t ZPlatformGranuleSizeShift = 21; // 2MB 39 const size_t ZPlatformMaxHeapSizeShift = 46; // 16TB 40 const size_t ZPlatformNMethodDisarmedOffset = 4; 41 const size_t ZPlatformCacheLineSize = 64; 42 43 uintptr_t ZPlatformAddressSpaceStart(); 44 uintptr_t ZPlatformAddressSpaceEnd(); 45 uintptr_t ZPlatformAddressReservedStart(); 46 uintptr_t ZPlatformAddressReservedEnd(); 47 uintptr_t ZPlatformAddressBase(); 48 size_t ZPlatformAddressOffsetBits(); 49 size_t ZPlatformAddressMetadataShift(); 50 51 #endif // OS_CPU_LINUX_X86_GC_Z_ZGLOBALS_LINUX_X86_HPP