macro ISR [name,error] {
forward
	dd isr_#name
forward
	isr_#name#:
		cli
		if error eq 0
		push 0
		end if
		push error
		jmp isr_common
				 
}

idt_setup:
	xor ecx, ecx
@@:
	mov eax, [aISRTable + (ecx * 4)]
	mov [aInterruptGate + (ecx * 8)], ax
	mov [aInterruptGate + (ecx * 8) + 2], word 0x08

	mov [aInterruptGate + (ecx * 8) + 5], word 0x8E
	shr eax, 16
	mov [aInterruptGate + (ecx * 8) + 6], ax
	inc ecx
	cmp ecx, 32
	jb @b

	mov ecx, 0x42
	mov eax, isr_syscall
	mov [aInterruptGate + (ecx * 8)], ax
	mov [aInterruptGate + (ecx * 8) + 2], word 0x08

	mov [aInterruptGate + (ecx * 8) + 5], word 0x8E
	shr eax, 16
	mov [aInterruptGate + (ecx * 8) + 6], ax

	lidt [pIDT]
	sti
	ret

pIDT:
	dw aInterruptGate.end-aInterruptGate-1
	dd aInterruptGate

; variable: idt_entries
aInterruptGate:
	dd 256*2 dup(0)
.end:


isr_common:
	pusha

	mov ax, ds
	push eax

	mov ax, 0x10
	mov ds, ax
	mov es, ax
	mov fs, ax
	mov gs, ax

	mov esi, szMsgInterrupt
	call klog 

	pop eax
	mov ds, ax
	mov es, ax
	mov fs, ax
	mov gs, ax

	popa
	add esp, 8
	sti
	iret

aISRTable:
ISR \
	division_by_zero, 0, \
	debug, 0, \
	nmi, 0, \
	breakpoint, 0, \
	overflow, 0, \
	bound_range_exceeded, 0, \
	invalid_opcode, 0, \
	device_not_available, 0, \
	double_fault, 1, \
	coproc_seg_overrun, 0, \
	invalid_tss, 1, \
	seg_not_present, 1, \
	stack_seg_fault, 1, \
	general_protection_fault, 1, \
	page_fault, 1, \
	reserved15, 0, \
	x87_exception, 0, \
	alignment_check, 0, \
	machine_check, 0, \
	simd_exception, 0, \
	virt_exception, 0, \
	reserved21, 0, \
	reserved22, 0, \
	reserved23, 0, \
	reserved24, 0, \
	reserved25, 0, \
	reserved26, 0, \
	reserved27, 0, \
	reserved28, 0, \
	reserved29, 0, \
	security_exception, 0, \
	reserved31, 0

szMsgInterrupt db "Interrupt", 0