forked from PoliEcho-holding-org/kern
Tom-on
8245187356
- Makefile changes - Linker script updates - Made it comply with C17 - Removed entry.asm (finally)
33 lines
703 B
C
33 lines
703 B
C
#ifndef SYSTEM_H
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#define SYSTEM_H
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#include <stdint.h>
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// Port functions
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uint8_t inb(uint16_t port) {
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uint8_t result;
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__asm__ volatile("inb %1, %0" : "=a"(result) : "Nd"(port));
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return result;
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}
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void outb(uint16_t port, uint8_t data) {
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__asm__ volatile("outb %0, %1" :: "a"(data), "Nd"(port));
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}
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uint16_t inw(uint16_t port) {
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uint16_t result;
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__asm__ volatile("inw %1, %0" : "=a"(result) : "Nd"(port));
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return result;
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}
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void outw(uint16_t port, uint16_t data) {
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__asm__ volatile("outw %0, %1" :: "a"(data), "Nd"(port));
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}
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void ioWait() {
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// Waits ~1 I/O Cycle (Linux uses this so it should be good)
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__asm__ volatile("outb %%al, $0x80" : : "a"(0));
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}
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#endif
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