kernel/x86.c


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#include "x86.h"

void x86_outb(int port, uint8_t data)
{
    __asm __volatile("outb %0,%w1" : : "a" (data), "d" (port));
}

uint8_t x86_inb(int port)
{
    uint8_t data;
    __asm __volatile("inb %w1,%0" : "=a" (data) : "d" (port));
    return data;
}

void x86_outw(int port, uint16_t data)
{
    __asm __volatile("outw %0,%w1" : : "a" (data), "d" (port));
}

uint16_t x86_inw(int port)
{
    uint16_t data;
    __asm __volatile("inw %w1,%0" : "=a" (data) : "d" (port));
    return data;
}

void x86_outl(int port, uint32_t data)
{
    __asm __volatile("outl %0,%w1" : : "a" (data), "d" (port));
}

uint32_t x86_inl(int port)
{
    uint32_t data;
    __asm __volatile("inl %w1,%0" : "=a" (data) : "d" (port));
    return data;
}