colin
/
risc-v-tlm
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
risc-v-tlm/inc/extension_base.h

59 lines
1.4 KiB
C
Raw Normal View History

Major refactoring! * A_Instruction, C_Instruction and M_Instruction renamed to *_extension * These files decode and executes extensions * These classes use a new base clase extension_base * Execute & Instruction classes heavyly modified: * Execute now is BASE_ISA and decodes and executes base ISA, Zicsr & Zifencei * Instruction keeps the instruction being executed, nothing else * Add memory interface to ISS to clear the code and the structure * Removed "using namespace " directives, all classes are called using their namespace * Added proper header to each file * Added license to all files
2020-06-02 19:08:38 +08:00
/*!
\file extension_base.h
\brief Base class for ISA extensions
\author Màrius Montón
\date May 2020
*/
// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef INC_EXTENSION_BASE_H_
#define INC_EXTENSION_BASE_H_
#include "systemc"
#include "Instruction.h"
#include "Registers.h"
#include "Log.h"
#include "MemoryInterface.h"
#define EXCEPTION_CAUSE_INSTRUCTION_MISALIGN 0
#define EXCEPTION_CAUSE_INSTRUCTION_ACCESS 1
#define EXCEPTION_CAUSE_ILLEGAL_INSTRUCTION 2
#define EXCEPTION_CAUSE_BREAKPOINT 3
#define EXCEPTION_CAUSE_LOAD_ADDR_MISALIGN 4
#define EXCEPTION_CAUSE_LOAD_ACCESS_FAULT 5
class extension_base {
public:
extension_base(sc_dt::sc_uint<32> instr, Registers *register_bank,
MemoryInterface *mem_interface);
virtual ~extension_base() = 0;
void setInstr(uint32_t p_instr);
void RaiseException(uint32_t cause, uint32_t inst);
bool NOP();
/* pure virtual functions */
virtual int32_t opcode() = 0;
virtual int32_t get_rd() = 0;
virtual void set_rd(int32_t value) = 0;
virtual int32_t get_rs1() = 0;
virtual void set_rs1(int32_t value) = 0;
virtual int32_t get_rs2() = 0;
virtual void set_rs2(int32_t value) = 0;
virtual int32_t get_funct3() = 0;
virtual void set_funct3(int32_t value) = 0;
void dump();
protected:
sc_dt::sc_uint<32> m_instr;
Registers *regs;
Performance *perf;
new log file, same performance
2020-06-09 22:37:29 +08:00
// Log *log;
Major refactoring! * A_Instruction, C_Instruction and M_Instruction renamed to *_extension * These files decode and executes extensions * These classes use a new base clase extension_base * Execute & Instruction classes heavyly modified: * Execute now is BASE_ISA and decodes and executes base ISA, Zicsr & Zifencei * Instruction keeps the instruction being executed, nothing else * Add memory interface to ISS to clear the code and the structure * Removed "using namespace " directives, all classes are called using their namespace * Added proper header to each file * Added license to all files
2020-06-02 19:08:38 +08:00
MemoryInterface *mem_intf;
};
#endif /* INC_EXTENSION_BASE_H_ */