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// MIT License, Copyright (c) 2020 Marvin Borner
// This file is a wrapper around some CPU asm calls
#include <def.h>
u8 inb(u16 port)
{
u8 value;
__asm__("inb %1, %0" : "=a"(value) : "Nd"(port));
return value;
}
u16 inw(u16 port)
{
u16 value;
__asm__("inw %1, %0" : "=a"(value) : "Nd"(port));
return value;
}
u32 inl(u16 port)
{
u32 value;
__asm__("inl %1, %0" : "=a"(value) : "Nd"(port));
return value;
}
// TODO: Fix optimization issues with insl
void __attribute__((optimize("O0"))) insl(u16 port, void *addr, int n)
{
__asm__("cld; rep insl"
: "=D"(addr), "=c"(n)
: "d"(port), "0"(addr), "1"(n)
: "memory", "cc");
}
void outb(u16 port, u8 data)
{
__asm__("outb %0, %1" ::"a"(data), "Nd"(port));
}
void outw(u16 port, u16 data)
{
__asm__("outw %0, %1" ::"a"(data), "Nd"(port));
}
void outl(u16 port, u32 data)
{
__asm__("outl %0, %1" ::"a"(data), "Nd"(port));
}
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