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28 lines
607 B
C
28 lines
607 B
C
#ifndef _IDT_H
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#define _IDT_H
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#include <kernel.h>
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#define IDT_ENTRIES 256
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#define IDT_FLAG_TRAP 0x8f // P = 1, Priv = 00, S = 0, Type = 1111 (32-bit trap)
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#define IDT_FLAG_INT 0x8e // P = 1, Priv = 00, S = 0, Type = 1110 (32-bit int)
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#define IDT_FLAG_USER 0xee // P = 1, Priv = 11, S = 0, Type = 1110 (32-bit int)
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struct idt_entry {
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uint16_t offset_low;
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uint16_t selector;
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uint8_t __unused;
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uint8_t flags;
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uint16_t offset_high;
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} __packed;
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struct idt_pointer {
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uint16_t limit;
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uint32_t base;
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} __packed;
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int idt_init(void);
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void idt_set_gate(uint8_t i, void* handler, uint8_t flags);
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#endif
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