61 lines
2.4 KiB
C++
61 lines
2.4 KiB
C++
/*
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* Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#include "precompiled.hpp"
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#include "gc/z/zAddress.hpp"
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#include "gc/z/zGlobals.hpp"
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void ZAddress::set_good_mask(uintptr_t mask) {
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ZAddressGoodMask = mask;
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ZAddressBadMask = ZAddressGoodMask ^ ZAddressMetadataMask;
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ZAddressWeakBadMask = (ZAddressGoodMask | ZAddressMetadataRemapped | ZAddressMetadataFinalizable) ^ ZAddressMetadataMask;
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}
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void ZAddress::initialize() {
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ZAddressBase = ZPlatformAddressBase();
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ZAddressOffsetBits = ZPlatformAddressOffsetBits();
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ZAddressOffsetMask = (((uintptr_t)1 << ZAddressOffsetBits) - 1) << ZAddressOffsetShift;
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ZAddressOffsetMax = (uintptr_t)1 << ZAddressOffsetBits;
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ZAddressMetadataShift = ZPlatformAddressMetadataShift();
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ZAddressMetadataMask = (((uintptr_t)1 << ZAddressMetadataBits) - 1) << ZAddressMetadataShift;
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ZAddressMetadataMarked0 = (uintptr_t)1 << (ZAddressMetadataShift + 0);
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ZAddressMetadataMarked1 = (uintptr_t)1 << (ZAddressMetadataShift + 1);
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ZAddressMetadataRemapped = (uintptr_t)1 << (ZAddressMetadataShift + 2);
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ZAddressMetadataFinalizable = (uintptr_t)1 << (ZAddressMetadataShift + 3);
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ZAddressMetadataMarked = ZAddressMetadataMarked0;
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set_good_mask(ZAddressMetadataRemapped);
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}
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void ZAddress::flip_to_marked() {
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ZAddressMetadataMarked ^= (ZAddressMetadataMarked0 | ZAddressMetadataMarked1);
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set_good_mask(ZAddressMetadataMarked);
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}
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void ZAddress::flip_to_remapped() {
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set_good_mask(ZAddressMetadataRemapped);
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}
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