rom.hh

来自「一个mips虚拟机非常好代码,使用C++来编写的,希望大家多学学,」· HH 代码 · 共 58 行

#ifndef rom_hh_included
#define rom_hh_included

#include <clock.hh>
#include <checkpoint.hh>
#include <cpu.hh>
#include <device.hh>
#include <inttypes.hh>
#include <module.hh>
#include <serial.hh>
#include <simarg.hh>


class ROM
    : public Module, public Device
{
private:

    static SerialType<ROM> type;

    // Configuration parameter cache.
    const char* file_name;
    ClockValue read_latency, write_latency;
    // The clock frequency for which the cached values are valid.
    ClockValue freq;
    // Actual data array.
    UInt32 size;
    UInt64* data;

public:

    // Constructors, etc.
    ROM(const SimArgs& args);
    ROM(Checkpoint& cp);
    ~ROM();

    // Module interfaces.
    void reset(bool warm);

    // Serialization information.
    void checkpoint(Checkpoint& cp, bool parent = false) const;
    
    // Device access.
    ClockValue read(UInt64 addr, UInt64* buf, int size);
    ClockValue write(UInt64 addr, const UInt64* buf, int size);

private:

    // Conviguration data.
    struct {
	char* file_name;
	int size;
	int read_latency, write_latency;
    } conf;
};

#endif // rom_hh_included