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#ifndef MELVIX_IO_H
#define MELVIX_IO_H
#include <stdint.h>
/**
* Receive from specified hardware port
* @param port The hardware port
* @return The hardware response
*/
u8 inb(u16 port);
/**
* Receive from specified hardware port
* @param port The hardware port
* @return The hardware response
*/
u16 inw(u16 port);
/**
* Receive from specified hardware port
* @param port The hardware port
* @return The hardware response
*/
u32 inl(u16 port);
int interrupts_enabled();
void interrupts_print();
void cli();
void sti();
void hlt();
/**
* Send data to the specified hardware port
* @param port The hardware port
* @param data The data that should be sent
*/
void outb(u16 port, u8 data);
/**
* Send data to the specified hardware port
* @param port The hardware port
* @param data The data that should be sent
*/
void outw(u16 port, u16 data);
/**
* Send data to the specified hardware port
* @param port The hardware port
* @param data The data that should be sent
*/
void outl(u16 port, u32 data);
u32 cr3_get();
void cr3_set(u32 cr3);
u32 cr0_get();
void cr0_set(u32 cr0);
void invlpg(u32 addr);
/**
* Initialize the serial conenction
*/
void serial_install();
/**
* Write a single char to the serial port (QEMU logging)
* @param ch The char
*/
void serial_put(char ch);
// Spinlock
static inline void spinlock(int *ptr)
{
int prev;
do
asm volatile("lock xchgl %0,%1" : "=a"(prev) : "m"(*ptr), "a"(1));
while (prev);
}
#endif
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