api/bits/x86_64/descriptor.h


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#pragma once

#include <stdint.h>

struct descriptor_table_register_long
{
	uint16_t limit;
	uint64_t base;
} __attribute__((packed, aligned(8)));

struct segment_descriptor
{
	uint16_t limit0;
	uint16_t base0;
	uint8_t base16;
	uint8_t access;
	uint8_t flags_limit16;
	uint8_t base24;
} __attribute__((packed, aligned(8)));

struct system_segment_descrptor_long
{
	struct segment_descriptor segment;
	uint32_t base32;
	uint32_t r0;
} __attribute__((packed, aligned(8)));

struct gate_descriptor
{
    uint16_t offset0;
    uint16_t selector;
    uint8_t ist;
    uint8_t access;
    uint16_t offset16;
    uint64_t offset32;
} __attribute__((packed, aligned(8)));

struct task_state_segment_long
{
	uint32_t r0;
	uint64_t rsp[3];
	uint64_t r1;
	uint64_t ist[7];
	uint64_t r2;
	uint16_t r3;
	uint16_t iomap_base;
} __attribute__((packed, aligned(8)));