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Kernel/Interrupts: Initialize two spurious handlers when PIC is disabled

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Even if the PIC was disabled it can still generate noise (spurious IRQs)
so we need to register two handlers for handling such cases.

Also, we declare interrupt service routine offset 0x20 to 0x2f as
reserved, so when the PIC is disabled, we can handle spurious IRQs from
the PIC at separate handlers.
This commit is contained in:
Liav A 2022-01-28 18:18:14 +02:00 • committed by Idan Horowitz
parent 7028a64997
commit 88c5992e0b
8 changed files with 169 additions and 5 deletions
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Kernel/Arch/x86/Interrupts.h
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@ -44,6 +44,7 @@ void register_interrupt_handler(u8 number, void (*handler)());
void register_user_callable_interrupt_handler(u8 number, void (*handler)());
GenericInterruptHandler& get_interrupt_handler(u8 interrupt_number);
void register_generic_interrupt_handler(u8 number, GenericInterruptHandler&);
void register_disabled_interrupt_handler(u8 number, GenericInterruptHandler& handler);
void unregister_generic_interrupt_handler(u8 number, GenericInterruptHandler&);
void idt_init();