author | dcubed |
Tue, 14 Oct 2014 10:32:12 -0700 | |
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/* |
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* Copyright (c) 1999, 2014, 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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*/ |
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||
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#ifndef CPU_X86_VM_GLOBALDEFINITIONS_X86_HPP |
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#define CPU_X86_VM_GLOBALDEFINITIONS_X86_HPP |
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const int StackAlignmentInBytes = 16; |
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// Indicates whether the C calling conventions require that |
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// 32-bit integer argument values are properly extended to 64 bits. |
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// If set, SharedRuntime::c_calling_convention() must adapt |
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// signatures accordingly. |
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const bool CCallingConventionRequiresIntsAsLongs = false; |
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#define SUPPORTS_NATIVE_CX8 |
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// The expected size in bytes of a cache line, used to pad data structures. |
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#if defined(TIERED) |
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#ifdef _LP64 |
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// tiered, 64-bit, large machine |
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#define DEFAULT_CACHE_LINE_SIZE 128 |
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#else |
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// tiered, 32-bit, medium machine |
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#define DEFAULT_CACHE_LINE_SIZE 64 |
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#endif |
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#elif defined(COMPILER1) |
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// pure C1, 32-bit, small machine |
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// i486 was the last Intel chip with 16-byte cache line size |
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#define DEFAULT_CACHE_LINE_SIZE 32 |
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#elif defined(COMPILER2) || defined(SHARK) |
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#ifdef _LP64 |
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// pure C2, 64-bit, large machine |
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#define DEFAULT_CACHE_LINE_SIZE 128 |
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#else |
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// pure C2, 32-bit, medium machine |
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#define DEFAULT_CACHE_LINE_SIZE 64 |
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#endif |
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#endif |
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#endif // CPU_X86_VM_GLOBALDEFINITIONS_X86_HPP |