23 lines
906 B
Markdown
23 lines
906 B
Markdown
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---
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title: "interrupts.h"
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summary: "the infrastructure to handle x86 interrupts"
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---
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# `idt_register_T` - struct [packed]
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This struct is very similar to the [GDT descriptor](https://nerdcult.net/projects/noxos/docs/codebase/platform/gdt.h/#gdt_descriptor_t---struct-packed).
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It holds the size and address of the Table, where the interrupt handlers are looked up.
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# `idt_descriptor_entry_T` - struct
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This struct stores information about one interrupt handler.
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The osdev wiki explains this more detailed.
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# `g_idt_register` - global variable
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The default IDT configuration loaded when the IDT gets initialized.
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# `g_handling_interrupt` - global variable
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When the system isn't handling an interrupt this is set to 0.
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If this is greater than 0 the system is currently handling an interrupt,
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# `idt_init()` - function (void)
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This function fills all the interrupt gates (handlers) into the IDT and loads it.
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