[bits 32]

global interrupts_enable
global interrupts_disable
global interrupts_load_idt
extern interrupts_handle_interrupt

; void interrupts_enable( void )
interrupts_enable:
	push ebp
	sti
	leave
	ret

; void interrupts_disable( void )
interrupts_disable:
	push ebp
	cli
	leave
	ret

%include "stage2_functions.asm"

extern idt_pointer

; void interrupts_load_idt( interrupt_descriptor_table_pointer_t *idt_pointer )
interrupts_load_idt:
	push ebp
	mov ebp, esp
	mov ecx, [ebp+8]
	lidt [idt_pointer]
	leave
	ret
        
; the handler to ignore interrupts
global interrupts_ignore_request
interrupts_ignore_request:
	pusha
	push si
	mov si, IGNINTR
	call pm_print_string
	pop si
	popa
	iret

IGNINTR:
	db "IGNINTR ", 0
	
; void interrupts_handle_request_0x00( );
%macro exception_stub 1
global interrupts_handle_request_%1
interrupts_handle_request_%1:
	mov [interrupt_no], byte %1
%endmacro

exception_stub 0x00

int_entry:
	; safe state of interrupted code
	pusha
	push ds
	push es
	push fs
	push gs

	; call the static C handler with the correct interrupt number
	; uint32_t interrupts_handle_interrupt( uint8_t interrupt_no, uint32_t esp );
	push esp
	mov eax, [interrupt_no]
	push eax
	call interrupts_handle_interrupt
	add esp, 8
;	mov esp, eax

	; restore state
	pop gs
	pop fs
	pop es
	pop ds
	popa
	
	iret

interrupt_no:
	db 0