/*
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* 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 .
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#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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