Initial commit: SUB-OS 64-Bit Production Monolithic Operating System with LazyBox userland suite

include/arch/x86_64/io.h

@@ -0,0 +1,52 @@
+#ifndef _ARCH_X86_64_IO_H
+#define _ARCH_X86_64_IO_H
+
+#include <stdint.h>
+
+static inline void outb(uint16_t port, uint8_t val) {
+    __asm__ volatile ("outb %0, %1" : : "a"(val), "Nd"(port));
+}
+
+static inline uint8_t inb(uint16_t port) {
+    uint8_t ret;
+    __asm__ volatile ("inb %1, %0" : "=a"(ret) : "Nd"(port));
+    return ret;
+}
+
+static inline void outw(uint16_t port, uint16_t val) {
+    __asm__ volatile ("outw %0, %1" : : "a"(val), "Nd"(port));
+}
+
+static inline uint16_t inw(uint16_t port) {
+    uint16_t ret;
+    __asm__ volatile ("inw %1, %0" : "=a"(ret) : "Nd"(port));
+    return ret;
+}
+
+static inline void outl(uint16_t port, uint32_t val) {
+    __asm__ volatile ("outl %0, %1" : : "a"(val), "Nd"(port));
+}
+
+static inline uint32_t inl(uint16_t port) {
+    uint32_t ret;
+    __asm__ volatile ("inl %1, %0" : "=a"(ret) : "Nd"(port));
+    return ret;
+}
+
+static inline void io_wait(void) {
+    outb(0x80, 0);
+}
+
+static inline void cli(void) {
+    __asm__ volatile ("cli");
+}
+
+static inline void sti(void) {
+    __asm__ volatile ("sti");
+}
+
+static inline void hlt(void) {
+    __asm__ volatile ("hlt");
+}
+
+#endif // _ARCH_X86_64_IO_H