src/port.asm


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25

[bits 32]

global port8_write
global port8_read

; void port8_write( port8_t *port, uint8_t data );
port8_write:
	push ebp
	mov ebp, esp
	mov ecx, [ebp+8]
	mov edx, DWORD [ecx]
	movzx ax, BYTE [ebp+12]
	out dx, al
	leave
	ret

; uint8_t port8_read( port8_t *port )
port8_read:
	push ebp
	mov ebp, esp
	mov ecx, DWORD [ebp+8]
	mov edx, [ecx]
	in al, dx
	leave
	ret