34 lines
656 B
C
34 lines
656 B
C
#pragma once
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#include <stddef.h>
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#include <stdint.h>
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static inline void outb(uint16_t port, uint8_t val)
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{
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__asm__ volatile("outb %b0, %w1" : : "a"(val), "Nd"(port) : "memory");
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}
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static inline uint8_t inb(uint16_t port)
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{
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uint8_t ret;
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__asm__ volatile("inb %w1, %b0" : "=a"(ret) : "Nd"(port) : "memory");
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return ret;
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}
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static inline void outw(uint16_t port, uint16_t val)
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{
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__asm__ volatile("outb %b0, %w1" : : "a"(val), "Nd"(port) : "memory");
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}
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static inline uint16_t inw(uint16_t port)
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{
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uint8_t ret;
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__asm__ volatile("inb %w1, %b0" : "=a"(ret) : "Nd"(port) : "memory");
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return ret;
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}
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static inline void io_wait(void)
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{
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outb(0x80, 0);
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}
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