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interrupts.h
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interrupts.h
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#ifndef __INTERRUPTS_H
#define __INTERRUPTS_H
#include "types.h"
#include "textio.h"
#include "port.h"
#include "gdt.h"
class InterruptManager;
class InterruptHandler {
protected:
uint8_t interruptNumber;
InterruptManager* interruptManager;
InterruptHandler(uint8_t interruptNumber, InterruptManager* interruptManager);
~InterruptHandler();
public:
virtual uint32_t handleInterrupt(uint32_t esp);
};
class InterruptManager {
friend class InterruptHandler;
protected:
static InterruptManager* activeInterruptManager;
InterruptHandler* handlers[256];
struct GateDescriptor {
uint16_t handlerAdressLowBits;
uint16_t gdt_codeSegmentSelector;
uint8_t reserved;
uint8_t access;
uint16_t handlerAdressHighBits;
} __attribute__((packed));
static GateDescriptor interruptDescriptorTable[256];
struct interruptDescriptorTablePointer {
uint16_t size;
uint32_t base;
} __attribute__((packed));
static void setInterruptDescriptorTableEntry(
uint8_t interruptNumber,
uint16_t codeSegmentSelectorOffset,
void (*handler)(),
uint8_t DescriptorPrivilegeLevel,
uint8_t DescriptorType
);
Port8Slow masterPicCommand;
Port8Slow masterPicData;
Port8Slow slavePicCommand;
Port8Slow slavePicData;
public:
InterruptManager(GlobalDescriptorTable* gdt);
~InterruptManager();
void activate();
void deactivate();
static uint32_t handleInterrupt(uint8_t interruptNumber, uint32_t esp);
uint32_t doHandleInterrupt(uint8_t interruptNumber, uint32_t esp);
static void ignoreInterruptRequest();
static void handleInterruptRequest0x00();
static void handleInterruptRequest0x01();
static void handleInterruptRequest0x0C();
};
#endif