zGlobals_x86.hpp

/*
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 * 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).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
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#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 ZPlatformMaxHeapSizeShift      = 46; // 16TB
const size_t ZPlatformNMethodDisarmedOffset = 4;
const size_t ZPlatformCacheLineSize         = 64;

uintptr_t    ZPlatformAddressSpaceStart();
uintptr_t    ZPlatformAddressSpaceEnd();
uintptr_t    ZPlatformAddressReservedStart();
uintptr_t    ZPlatformAddressReservedEnd();
uintptr_t    ZPlatformAddressBase();
size_t       ZPlatformAddressOffsetBits();
size_t       ZPlatformAddressMetadataShift();

#endif // CPU_X86_GC_Z_ZGLOBALS_X86_HPP