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#ifndef GDT_H
#define GDT_H
#include "types.h"
typedef struct {
uint32_t link;
uint32_t esp0;
uint32_t ss0;
uint32_t esp1;
uint32_t ss1;
uint32_t esp2;
uint32_t ss2;
uint32_t cr3;
uint32_t eip;
uint32_t eflags;
uint32_t eax;
uint32_t ecx;
uint32_t edx;
uint32_t ebx;
uint32_t esp;
uint32_t ebp;
uint32_t esi;
uint32_t edi;
uint32_t es;
uint32_t cs;
uint32_t ss;
uint32_t ds;
uint32_t fs;
uint32_t gs;
uint32_t ldt;
uint16_t trap;
uint16_t iomap;
} __attribute__((packed)) tss_entry;
typedef struct {
uint16_t limit_low;
uint16_t base_low;
uint8_t base_mid;
uint16_t flags;
uint8_t base_high;
} __attribute__((packed)) gdt_entry;
typedef struct {
uint16_t limit;
gdt_entry* base;
} __attribute__((packed)) gdt_ptr;
#define gdt_entry_init(b, l, f) { \
.base_low = (b & 0xffff), \
.base_mid = (b >> 16 & 0xff), \
.base_high = (b >> 24 & 0xff), \
.limit_low = (l & 0xffff), \
.flags = (f | (l >> 8 & 0x0f00))}
#define tss_entry_init(e, s, c, d) { \
.esp0 = e, \
.ss0 = s, \
.cs = c, \
.ss = d, \
.ds = d, \
.es = d, \
.fs = d, \
.gs = d}
void gdt_init();
#endif
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