bits 32
	section .text

	global set_gdt
set_gdt:
	mov eax, [esp + 4]
	mov [gdtbase], eax
	mov ax, [esp + 8]
	mov [gdtlim], ax
	lgdt [gdtlim]
	ret

	global setup_selectors
setup_selectors:
	; set data selectors directly
	mov ax, [esp + 8]
	mov ss, ax
	mov es, ax
	mov ds, ax
	mov gs, ax
	mov fs, ax
	; set cs with a long jump
	mov ax, [esp + 4]
	mov [jseg], ax
	mov dword [joffs], .setcs
	jmp far [joffs]
.setcs: ret
	

	align 4
joffs	dd 0
jseg	dw 0
gdtlim	dw 0
gdtbase dd 0

; vi:ft=nasm: