/*  kdtables.h
*   Kernel Discriptor Tables
*
*   Contains GDT, IDT, and any relevant functions and structs pertaining to them
*   
*/
#ifndef KDTABLES_H
#define KDTABLES_H
#include <stdint.h>

// TSS
typedef struct tss_s {
    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 ESI;
    uint32_t EDI;
    uint32_t ES;
    uint32_t CS;
    uint32_t SS;
    uint32_t DS;
    uint32_t FS;
    uint32_t GS;
    uint32_t LDTR;
    uint32_t IOPB;
    uint32_t SSP;
} __attribute__((packed)) tss_t; 

extern tss_t tss;

//IDT

typedef struct InterruptDescriptor_s {
    uint16_t offset_1;
    uint16_t selector;
    uint8_t reserved;
    uint8_t attributes;
    uint16_t offset_2;
} InterruptDescriptor_t;

typedef struct IDTR_s {
    uint16_t size;
    InterruptDescriptor_t* IDT;
} IDTR_t;

extern IDTR_t idtr;

void setup_idt();
void write_descriptors();
void load_idt();

#endif