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8infy
38 lines
819 B
C
38 lines
819 B
C
#ifndef IO_H
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#define IO_H
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#include <stddef.h>
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#include <stdint.h>
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static inline void outd(uint16_t port, uint32_t data) {
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asm volatile("out %%eax, %%dx" : : "a"(data), "d"(port));
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}
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static inline uint32_t ind(uint16_t port) {
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uint32_t ret;
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asm volatile("in %%dx, %%eax" : "=a"(ret) : "d"(port));
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return ret;
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}
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static inline void outw(uint16_t port, uint16_t data) {
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asm volatile("out %%ax, %%dx" : : "a"(data), "d"(port));
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}
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static inline uint16_t inw(uint16_t port) {
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uint16_t ret;
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asm volatile("in %%dx, %%ax" : "=a"(ret) : "d"(port));
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return ret;
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}
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static inline void outb(uint16_t port, uint8_t data) {
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asm volatile("out %%al, %%dx" : : "a"(data), "d"(port));
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}
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static inline uint8_t inb(uint16_t port) {
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uint8_t ret;
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asm volatile ("in %%dx, %%al" : "=a"(ret) : "d"(port));
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return ret;
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}
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#endif
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