| /* |
| * Copyright (c) 1999, 2015, Oracle and/or its affiliates. All rights reserved. |
| * Copyright (c) 2014, 2015, Red Hat Inc. 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_AARCH64_VM_GLOBALDEFINITIONS_AARCH64_HPP |
| #define CPU_AARCH64_VM_GLOBALDEFINITIONS_AARCH64_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 |
| |
| // According to the ARMv8 ARM, "Concurrent modification and execution |
| // of instructions can lead to the resulting instruction performing |
| // any behavior that can be achieved by executing any sequence of |
| // instructions that can be executed from the same Exception level, |
| // except where the instruction before modification and the |
| // instruction after modification is a B, BL, NOP, BKPT, SVC, HVC, or |
| // SMC instruction." |
| // |
| // This makes the games we play when patching difficult, so when we |
| // come across an access that needs patching we deoptimize. There are |
| // ways we can avoid this, but these would slow down C1-compiled code |
| // in the defauilt case. We could revisit this decision if we get any |
| // evidence that it's worth doing. |
| #define DEOPTIMIZE_WHEN_PATCHING |
| |
| #define SUPPORT_RESERVED_STACK_AREA |
| |
| #define THREAD_LOCAL_POLL |
| |
| #endif // CPU_AARCH64_VM_GLOBALDEFINITIONS_AARCH64_HPP |
