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/*
* Copyright (c) 1997, 2020, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2014, 2020, Red Hat Inc. All rights reserved.
* Copyright (c) 2020, 2022, Huawei Technologies Co., Ltd. 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_RISCV_VM_VERSION_RISCV_HPP
#define CPU_RISCV_VM_VERSION_RISCV_HPP
#include "runtime/abstract_vm_version.hpp"
#include "runtime/arguments.hpp"
#include "runtime/globals_extension.hpp"
#include "utilities/sizes.hpp"
class VM_Version : public Abstract_VM_Version {
#ifdef COMPILER2
private:
static void c2_initialize();
#endif // COMPILER2
// VM modes (satp.mode) privileged ISA 1.10
enum VM_MODE {
VM_MBARE = 0,
VM_SV39 = 8,
VM_SV48 = 9,
VM_SV57 = 10,
VM_SV64 = 11
};
protected:
static const char* _uarch;
static const char* _vm_mode;
static uint32_t _initial_vector_length;
static void get_os_cpu_info();
static uint32_t get_current_vector_length();
static VM_MODE get_satp_mode();
public:
// Initialization
static void initialize();
constexpr static bool supports_stack_watermark_barrier() { return true; }
enum Feature_Flag {
#define CPU_FEATURE_FLAGS(decl) \
decl(I, "i", 8) \
decl(M, "m", 12) \
decl(A, "a", 0) \
decl(F, "f", 5) \
decl(D, "d", 3) \
decl(C, "c", 2) \
decl(V, "v", 21)
#define DECLARE_CPU_FEATURE_FLAG(id, name, bit) CPU_##id = (1 << bit),
CPU_FEATURE_FLAGS(DECLARE_CPU_FEATURE_FLAG)
#undef DECLARE_CPU_FEATURE_FLAG
};
static void initialize_cpu_information(void);
};
#endif // CPU_RISCV_VM_VERSION_RISCV_HPP
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