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https://github.com/fergalmoran/ferglos.git
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72 lines
1.8 KiB
C++
72 lines
1.8 KiB
C++
#ifndef __INTERRUPTS_H
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#define __INTERRUPTS_H
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#include "gdt.h"
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#include "port.h"
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#include "types.h"
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class InterruptManager;
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class InterruptHandler {
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protected:
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uint8_t _interruptNumber;
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InterruptManager* _interruptManager;
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InterruptHandler(uint8_t interruptNumber, InterruptManager* interruptManager);
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~InterruptHandler();
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public:
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virtual uint32_t HandleInterrupt(uint32_t esp);
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};
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class InterruptManager {
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friend class InterruptHandler;
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protected:
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static InterruptManager* _activeInterruptManager;
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InterruptHandler* _handlers[256];
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struct GateDescriptor {
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uint16_t handlerAddressLowBits;
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uint16_t gdt_codeSegmentSelector;
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uint8_t reserved;
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uint8_t access;
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uint16_t handlerAddressHiBits;
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} __attribute__((packed));
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static GateDescriptor _interruptDescriptorTable[256];
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struct InterruptDescriptorTablePointer {
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uint16_t size;
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uint32_t base;
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} __attribute__((packed));
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static void
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SetInterruptDescriptorTableEntries(
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uint8_t interruptNumber,
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uint16_t codeSegmentSelectorOffset,
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void (*handler)(),
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uint8_t descriptorPrivilegeLevel,
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uint8_t descriptorType);
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Port8Bit_Slow _picPrimaryCommand;
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Port8Bit_Slow _picPrimaryData;
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Port8Bit_Slow _picSecondaryCommand;
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Port8Bit_Slow _picSecondaryData;
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public:
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InterruptManager(GlobalDescriptorTable* gdt);
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~InterruptManager();
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void Activate();
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void Deactivate();
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static uint32_t HandleInterrupt(uint8_t interruptNumber, uint32_t esp);
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uint32_t DoHandleInterrupt(uint8_t interruptNumber, uint32_t esp);
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static void IgnoreInterruptRequest();
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static void HandleInterruptRequest0x00();
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static void HandleInterruptRequest0x01();
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static void HandleInterruptRequest0x0C();
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};
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#endif |