31 lines
791 B
C
31 lines
791 B
C
#ifndef _IDT_H
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#define _IDT_H
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#include <stddef.h>
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#include <stdint.h>
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#define KERNEL_CODE_SEGMENT_OFFSET 0x08
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#define INTERRUPT_GATE 0x8e
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// https://wiki.osdev.org/Interrupt_Descriptor_Table
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struct interrupt_descriptor_32 {
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uint16_t offset_1; // offset bits 0..15
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uint16_t selector; // a code segment selector in GDT or LDT
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uint8_t zero; // unused, set to 0
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uint8_t type_attributes; // gate type, dpl, and p fields
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uint16_t offset_2; // offset bits 16..31
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} __attribute__((__packed__));
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struct interrupt_frame_32 {
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size_t ip;
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size_t cs;
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size_t flags;
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size_t sp;
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size_t ss;
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} __attribute__((__packed__));
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void idt_init(void);
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void idt_register_handler(uint8_t interrupt, size_t address);
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#endif
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