| /* |
| * Copyright (c) 1999, 2016, Oracle and/or its affiliates. All rights reserved. |
| * 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). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #ifndef CPU_X86_VM_GLOBALDEFINITIONS_X86_HPP |
| #define CPU_X86_VM_GLOBALDEFINITIONS_X86_HPP |
| |
| const int StackAlignmentInBytes = 16; |
| |
| // Indicates whether the C calling conventions require that |
| // 32-bit integer argument values are extended to 64 bits. |
| const bool CCallingConventionRequiresIntsAsLongs = false; |
| |
| #define SUPPORTS_NATIVE_CX8 |
| |
| // The expected size in bytes of a cache line, used to pad data structures. |
| #if defined(TIERED) |
| #ifdef _LP64 |
| // tiered, 64-bit, large machine |
| #define DEFAULT_CACHE_LINE_SIZE 128 |
| #else |
| // tiered, 32-bit, medium machine |
| #define DEFAULT_CACHE_LINE_SIZE 64 |
| #endif |
| #elif defined(COMPILER1) |
| // pure C1, 32-bit, small machine |
| // i486 was the last Intel chip with 16-byte cache line size |
| #define DEFAULT_CACHE_LINE_SIZE 32 |
| #elif defined(COMPILER2) || defined(SHARK) |
| #ifdef _LP64 |
| // pure C2, 64-bit, large machine |
| #define DEFAULT_CACHE_LINE_SIZE 128 |
| #else |
| // pure C2, 32-bit, medium machine |
| #define DEFAULT_CACHE_LINE_SIZE 64 |
| #endif |
| #endif |
| |
| #if defined(COMPILER2) |
| // Include Restricted Transactional Memory lock eliding optimization |
| #define INCLUDE_RTM_OPT 1 |
| #endif |
| |
| #if defined(LINUX) || defined(SOLARIS) || defined(__APPLE__) |
| #define SUPPORT_RESERVED_STACK_AREA |
| #endif |
| |
| #endif // CPU_X86_VM_GLOBALDEFINITIONS_X86_HPP |