aboutsummaryrefslogtreecommitdiffstats
path: root/memdump/io.h
blob: a592402f7eb93e88edd298e56e6ba4a6a6390dc7 (plain)
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
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
#ifndef IO_H
#define IO_H

static inline void outb(unsigned char v, unsigned short p)
{
  asm volatile("outb %1,%0" : : "d" (p), "a" (v));
}

static inline unsigned char inb(unsigned short p)
{
  unsigned char v;
  asm volatile("inb %1,%0" : "=a" (v) : "d" (p));
  return v;
}

static inline void outw(unsigned short v, unsigned short p)
{
  asm volatile("outw %1,%0" : : "d" (p), "a" (v));
}

static inline unsigned short inw(unsigned short p)
{
  unsigned short v;
  asm volatile("inw %1,%0" : "=a" (v) : "d" (p));
  return v;
}

static inline void outl(unsigned int v, unsigned short p)
{
  asm volatile("outl %1,%0" : : "d" (p), "a" (v));
}

static inline unsigned int inl(unsigned short p)
{
  unsigned int v;
  asm volatile("inl %1,%0" : "=a" (v) : "d" (p));
  return v;
}

#endif