73 lines
1.7 KiB
C++
73 lines
1.7 KiB
C++
/* Interrupts.hh
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* vim: set tw=80:
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* Eryn Wells <eryn@erynwells.me>
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*/
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/**
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* Interrupts, exceptions. Spooky scary...
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*/
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#ifndef __INTERRUPTS_HH__
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#define __INTERRUPTS_HH__
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#include "Descriptors.hh"
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#include "PIC.hh"
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namespace kernel {
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} /* namespace kernel */
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namespace x86 {
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enum class Interrupt {
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DE = 0, // Divide error exception
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DB = 1, // Debug exception
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NMI = 2, // Non-maskable interrupt
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BP = 3, // Breakpoint exception
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OF = 4, // Overflow exception
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BR = 5, // BOUND range exceeded exception
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UD = 6, // Invalid opcode exception
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NM = 7, // Device not available exception
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DF = 8, // Double fault exception
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// Interrupt 9 not used on IA-32; reserved
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TS = 10, // Invalid TSS exception
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NP = 11, // Segment not present
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SS = 12, // Stack fault exception
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GP = 13, // General protection exception
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PF = 14, // Page-fault exception
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MF = 16, // x87 FPU floating-point error
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AC = 17, // Alignment check exception
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MC = 18, // Machine-check exception
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XM = 19, // SIMD floating-point exception
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VE = 20, // Virtualization exception
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// Interrupts 21 through 31 reserved
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};
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struct InterruptHandler
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{
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static InterruptHandler& systemInterruptHandler();
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InterruptHandler();
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void initialize();
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void enableInterrupts() const;
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void disableInterrupts() const;
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void dispatchException(uint8_t exception);
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void dispatchHardwareInterrupt(uint8_t irq);
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private:
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PIC mPIC;
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IDT mIDT;
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void doTimerInterrupt();
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void doKeyboardInterrupt();
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void finishHardwareInterrupt(uint8_t irq) const;
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};
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} /* namespace x86 */
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#endif /* __INTERRUPTS_HH__ */
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