1 /*
 2  * Copyright (c) 1997, 2020, Oracle and/or its affiliates. All rights reserved.
 3  * Copyright (c) 2014, 2020, Red Hat Inc. All rights reserved.
 4  * Copyright (c) 2020, 2021, Huawei Technologies Co., Ltd. All rights reserved.
 5  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 6  *
 7  * This code is free software; you can redistribute it and/or modify it
 8  * under the terms of the GNU General Public License version 2 only, as
 9  * published by the Free Software Foundation.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
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25  */
26 
27 #ifndef CPU_RISCV_VM_VERSION_RISCV_HPP
28 #define CPU_RISCV_VM_VERSION_RISCV_HPP
29 
30 #include "runtime/abstract_vm_version.hpp"
31 #include "runtime/arguments.hpp"
32 #include "runtime/globals_extension.hpp"
33 #include "utilities/sizes.hpp"
34 
35 class VM_Version : public Abstract_VM_Version {
36 public:
37   // Initialization
38   static void initialize();
39 
40   constexpr static bool supports_stack_watermark_barrier() { return true; }
41 
42   static bool is_checkvext_fault(address pc) {
43     return pc != NULL && pc == _checkvext_fault_pc;
44   }
45 
46   static address continuation_for_checkvext_fault(address pc) {
47     assert(_checkvext_continuation_pc != NULL, "not initialized");
48     return _checkvext_continuation_pc;
49   }
50 
51   static address _checkvext_fault_pc;
52   static address _checkvext_continuation_pc;
53 
54 protected:
55   static int _initial_vector_length;
56   static void get_processor_features();
57 
58 #ifdef COMPILER2
59 private:
60   static void get_c2_processor_features();
61 #endif // COMPILER2
62 };
63 
64 #endif // CPU_RISCV_VM_VERSION_RISCV_HPP