28 lines
427 B
C++
28 lines
427 B
C++
#ifndef _PORT_IO_H_
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#define _PORT_IO_H_
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#include <base/stdint.h>
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namespace Genode
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{
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/**
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* Read byte from I/O port
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*/
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inline uint8_t inb(uint16_t port)
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{
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uint8_t res;
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asm volatile ("inb %w1, %0" : "=a"(res) : "Nd"(port));
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return res;
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}
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/**
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* Write byte to I/O port
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*/
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inline void outb(uint16_t port, uint8_t val)
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{
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asm volatile ("outb %0, %w1" : : "a"(val), "Nd"(port));
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}
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}
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#endif /* _PORT_IO_H_ */
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