1 /* 2 * Copyright (c) 1999, 2018, 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 25 #ifndef CPU_X86_VM_GLOBALDEFINITIONS_X86_HPP 26 #define CPU_X86_VM_GLOBALDEFINITIONS_X86_HPP 27 28 const int StackAlignmentInBytes = 16; 29 30 // Indicates whether the C calling conventions require that 31 // 32-bit integer argument values are extended to 64 bits. 32 const bool CCallingConventionRequiresIntsAsLongs = false; 33 34 #define SUPPORTS_NATIVE_CX8 35 36 // The expected size in bytes of a cache line, used to pad data structures. 37 #if defined(TIERED) 38 #ifdef _LP64 39 // tiered, 64-bit, large machine 40 #define DEFAULT_CACHE_LINE_SIZE 128 41 #else 42 // tiered, 32-bit, medium machine 43 #define DEFAULT_CACHE_LINE_SIZE 64 44 #endif 45 #elif defined(COMPILER1) 46 // pure C1, 32-bit, small machine 47 // i486 was the last Intel chip with 16-byte cache line size 48 #define DEFAULT_CACHE_LINE_SIZE 32 49 #elif defined(COMPILER2) 50 #ifdef _LP64 51 // pure C2, 64-bit, large machine 52 #define DEFAULT_CACHE_LINE_SIZE 128 53 #else 54 // pure C2, 32-bit, medium machine 55 #define DEFAULT_CACHE_LINE_SIZE 64 56 #endif 57 #endif 58 59 #if defined(COMPILER2) 60 // Include Restricted Transactional Memory lock eliding optimization 61 #define INCLUDE_RTM_OPT 1 62 #endif 63 64 #if defined(LINUX) || defined(SOLARIS) || defined(_ALLBSD_SOURCE) 65 #define SUPPORT_RESERVED_STACK_AREA 66 #endif 67 68 #define THREAD_LOCAL_POLL 69 70 #endif // CPU_X86_VM_GLOBALDEFINITIONS_X86_HPP 71