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694acedf18
Reviewed-by: coleenp, erikj, stefank, iignatyev, dholmes, aph, shade, iklam, mchung, iveresov
78 lines
2.5 KiB
C++
78 lines
2.5 KiB
C++
/*
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* Copyright (c) 1999, 2021, 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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#ifndef CPU_X86_GLOBALDEFINITIONS_X86_HPP
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#define CPU_X86_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 extended to 64 bits.
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const bool CCallingConventionRequiresIntsAsLongs = false;
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#define SUPPORTS_NATIVE_CX8
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#define CPU_MULTI_COPY_ATOMIC
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// The expected size in bytes of a cache line, used to pad data structures.
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#if COMPILER1_AND_COMPILER2
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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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#define OM_CACHE_LINE_SIZE 64
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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)
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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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#define OM_CACHE_LINE_SIZE 64
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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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#if defined(COMPILER2)
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// Include Restricted Transactional Memory lock eliding optimization
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#define INCLUDE_RTM_OPT 1
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#endif
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#if defined(LINUX) || defined(__APPLE__)
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#define SUPPORT_RESERVED_STACK_AREA
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#endif
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#if INCLUDE_JVMCI
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#define COMPRESSED_CLASS_POINTERS_DEPENDS_ON_COMPRESSED_OOPS EnableJVMCI
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#else
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#define COMPRESSED_CLASS_POINTERS_DEPENDS_ON_COMPRESSED_OOPS false
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#endif
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#endif // CPU_X86_GLOBALDEFINITIONS_X86_HPP
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