36 lines
729 B
C
36 lines
729 B
C
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#ifndef IDT_H
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#define IDT_H
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#include <stdint.h>
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#define IDT_NB_ENTRIES 32
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#define IDT_SIZE (IDT_NB_ENTRIES * sizeof(struct idt_entry))
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struct idt_entry
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{
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uint16_t offset_1 : 16;
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uint16_t selector : 16;
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uint8_t zero : 8; // unused, set to 0
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uint8_t type : 3; // gate type
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uint8_t size : 1;
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uint8_t zero_2 : 1; // set to 0 for interrupt and trap gates
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uint8_t desc_priv : 2; // Descriptor privilege
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uint8_t present : 1;
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uint16_t offset_2 : 16;
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} __attribute__ ((packed));
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struct idt
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{
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struct idt_entry entries[IDT_NB_ENTRIES];
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};
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struct idt_r
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{
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uint16_t limit;
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uint32_t addr;
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} __attribute__ ((packed));
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#endif /* !IDT_H */
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