mirror of
https://github.com/JannisHeydemann/BoredOS.git
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44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
// Copyright (c) 2023-2026 Chris (boreddevnl)
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// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
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// This header needs to maintain in any file it is present in, as per the GPL license terms.
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#ifndef IO_H
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#define IO_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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asm volatile ("outb %0, %1" : : "a"(val), "Nd"(port));
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}
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static inline void outw(uint16_t port, uint16_t val) {
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asm volatile ("outw %0, %1" : : "a"(val), "Nd"(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 ("inw %1, %0" : "=a"(ret) : "Nd"(port));
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return ret;
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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 ("inb %1, %0" : "=a"(ret) : "Nd"(port));
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return ret;
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}
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static inline void outl(uint16_t port, uint32_t val) {
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asm volatile ("outl %0, %1" : : "a"(val), "Nd"(port));
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}
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static inline uint32_t inl(uint16_t port) {
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uint32_t ret;
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asm volatile ("inl %1, %0" : "=a"(ret) : "Nd"(port));
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return ret;
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}
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static inline void io_wait(void) {
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outb(0x80, 0);
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}
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#endif
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