61 lines
1.5 KiB
C++
61 lines
1.5 KiB
C++
/*!
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\file extension_base.h
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\brief Base class for ISA extensions
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\author Màrius Montón
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\date May 2020
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*/
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// SPDX-License-Identifier: GPL-3.0-or-later
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#ifndef INC_EXTENSION_BASE_H_
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#define INC_EXTENSION_BASE_H_
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#include "systemc"
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#include "Instruction.h"
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#include "Registers.h"
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#include "MemoryInterface.h"
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#include "spdlog/spdlog.h"
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#include "spdlog/sinks/basic_file_sink.h"
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#define EXCEPTION_CAUSE_INSTRUCTION_MISALIGN 0
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#define EXCEPTION_CAUSE_INSTRUCTION_ACCESS 1
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#define EXCEPTION_CAUSE_ILLEGAL_INSTRUCTION 2
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#define EXCEPTION_CAUSE_BREAKPOINT 3
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#define EXCEPTION_CAUSE_LOAD_ADDR_MISALIGN 4
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#define EXCEPTION_CAUSE_LOAD_ACCESS_FAULT 5
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class extension_base {
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public:
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extension_base(sc_dt::sc_uint<32> instr, Registers *register_bank,
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MemoryInterface *mem_interface);
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virtual ~extension_base() = 0;
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void setInstr(uint32_t p_instr);
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void RaiseException(uint32_t cause, uint32_t inst);
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bool NOP();
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/* pure virtual functions */
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virtual int32_t opcode() = 0;
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virtual int32_t get_rd() = 0;
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virtual void set_rd(int32_t value) = 0;
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virtual int32_t get_rs1() = 0;
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virtual void set_rs1(int32_t value) = 0;
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virtual int32_t get_rs2() = 0;
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virtual void set_rs2(int32_t value) = 0;
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virtual int32_t get_funct3() = 0;
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virtual void set_funct3(int32_t value) = 0;
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void dump();
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protected:
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sc_dt::sc_uint<32> m_instr;
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Registers *regs;
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Performance *perf;
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MemoryInterface *mem_intf;
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std::shared_ptr<spdlog::logger> logger;
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};
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#endif /* INC_EXTENSION_BASE_H_ */
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