66 lines
1.0 KiB
C++
66 lines
1.0 KiB
C++
/*!
|
|
\file Instruction.h
|
|
\brief Decode instructions part of the RISC-V
|
|
\author Màrius Montón
|
|
\date August 2018
|
|
*/
|
|
// SPDX-License-Identifier: GPL-3.0-or-later
|
|
|
|
#ifndef INSTRUCTION__H
|
|
#define INSTRUCTION__H
|
|
|
|
#include "systemc"
|
|
#include "extension_base.h"
|
|
|
|
typedef enum {
|
|
BASE_EXTENSION,
|
|
M_EXTENSION,
|
|
A_EXTENSION,
|
|
F_EXTENSION,
|
|
D_EXTENSION,
|
|
Q_EXTENSION,
|
|
L_EXTENSION,
|
|
C_EXTENSION,
|
|
R_EXTENSION,
|
|
J_EXTENSION,
|
|
P_EXTENSION,
|
|
V_EXTENSION,
|
|
N_EXTENSION,
|
|
UNKNOWN_EXTENSION
|
|
} extension_t;
|
|
|
|
/**
|
|
* @brief Instruction decoding and fields access
|
|
*/
|
|
class Instruction {
|
|
public:
|
|
|
|
Instruction(std::uint32_t instr);
|
|
|
|
/**
|
|
* @brief returns what instruction extension
|
|
* @return extension
|
|
*/
|
|
extension_t check_extension() const;
|
|
|
|
void setInstr(std::uint32_t p_instr) {
|
|
m_instr = p_instr;
|
|
}
|
|
/**
|
|
* @brief return instruction
|
|
* @return all instruction bits (31:0)
|
|
*/
|
|
std::uint32_t getInstr() {
|
|
return m_instr;
|
|
}
|
|
|
|
inline void dump() {
|
|
std::cout << std::hex << "0x" << m_instr << std::dec << std::endl;
|
|
}
|
|
|
|
private:
|
|
std::uint32_t m_instr;
|
|
};
|
|
|
|
#endif
|