20 lines
605 B
C
20 lines
605 B
C
#pragma once
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// doc : https://wiki.osdev.org/Interrupt_Descriptor_Table#IDTR
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struct idt_descriptor {
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uint16_t size;
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uint32_t offset;
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} __attribute__((packed));
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struct idt_entry {
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uint16_t isr_low; // The lower 16 bits of the ISR's address
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uint16_t kernel_cs; // The GDT segment selector that the CPU will load
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// into CS before calling the ISR
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uint8_t reserved; // Set to zero
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uint8_t attributes; // Type and attributes; see the IDT page
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uint16_t isr_high; // The higher 16 bits of the ISR's address
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} __attribute__((packed));
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#define IDT_SIZE 256
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void init_idt(void); |