#pragma once
// ke_idt.h - IDT, GDT, and TSS setup
#include <stdint.h>

// 64-bit TSS - minimal; we only care about RSP0.
#pragma pack(push, 1)
typedef struct TSS64 {
    uint32_t Reserved0;
    uint64_t RSP0;           // loaded into RSP on ring-0 entry
    uint64_t RSP1;
    uint64_t RSP2;
    uint64_t Reserved1;
    uint64_t IST[7];
    uint64_t Reserved2;
    uint16_t Reserved3;
    uint16_t IoMapBase;
} TSS64;
#pragma pack(pop)

extern TSS64* gTss;

void KeInitializeGdt(void);
void KeInitializeIdt(void);

// Called from hal_timer.c after HPET/APIC timer fires.
void KeTimerInterrupt(void);

// Syscall entry - implemented in ke_syscall.asm.
extern void KeSyscallEntry(void);

// Fault stubs installed by KeInitializeIdt.
extern void KeFaultDE(void);   // #DE divide error
extern void KeFaultGP(void);   // #GP general protection
extern void KeFaultPF(void);   // #PF page fault