pic.hh

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,

#ifndef pic_hh_included
#define pic_hh_included

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


class U4600_PIC
    : public Module, public Device, public InterruptSink
{
private:

    static SerialType<U4600_PIC> type;

    UInt16 intr_pending;	// Set of interrupts pending
    UInt16 intr_mask;		// Set of interrupts enabled

    void check_interrupts(void);

public:

    // Constructors, etc.
    U4600_PIC(const SimArgs& args);
    U4600_PIC(Checkpoint& cp);

    // 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);

    // Interrupt sink
    void deliver_interrupt(unsigned int irq);
    void clear_interrupt(unsigned int irq);

};

#endif // pic_hh_included