Files
jsix_import/src/kernel/io.h
Justin C. Miller 1308864061 MSR and syscall changes
- Moved MSR code to separate files with an enum class
- Implemented syscall_enable in C++ using new MSR calls
2018-09-15 00:37:49 -07:00

24 lines
505 B
C

#pragma once
#include <stdint.h>
extern "C" {
/// Read a byte from an IO port.
/// \arg port The address of the IO port
/// \returns One byte read from the port
uint8_t inb(uint16_t port);
/// Write a byte to an IO port.
/// \arg port The addres of the IO port
/// \arg val The byte to write
void outb(uint16_t port, uint8_t val);
/// Pause briefly by doing IO to port 0x80
/// \arg times Number of times to delay by writing
void io_wait(unsigned times = 1);
}
const uint16_t COM1 = 0x03f8;