28 lines
511 B
C
28 lines
511 B
C
#include <ports.h>
|
|
#include <stdint.h>
|
|
|
|
void outb(uint16_t port, uint8_t value)
|
|
{
|
|
// Send byte to port
|
|
asm volatile("outb %1, %0" : : "dN" (port), "a" (value));
|
|
}
|
|
|
|
uint8_t inb(uint16_t port)
|
|
{
|
|
uint8_t ret;
|
|
asm volatile("inb %1, %0" : "=a" (ret) : "dN" (port));
|
|
return ret;
|
|
}
|
|
|
|
void outw(uint16_t port, uint16_t value)
|
|
{
|
|
asm volatile("outw %1, %0" : : "dN" (port), "a" (value));
|
|
}
|
|
|
|
uint16_t inw(uint16_t port)
|
|
{
|
|
uint16_t ret;
|
|
asm volatile("inw %1, %0" : "=a" (ret) : "dN" (port));
|
|
return ret;
|
|
}
|