A number of optimizations have been made for OpenKernel.

Author: OpenSoftware-World

Drivers/Cpu/cpu.c

@@ -26,10 +26,10 @@ void get_sys_cpuinfo(const char *mode) {
 
 void cpu_status(const char *mode) {
     if (mode[0] == 'S') {
-        __asm__ __volatile__ ("hlt");
+        hlt();
     }
     if (mode[0] == 'A') {
-        __asm__ __volatile__ ("sti");
+        sti();
     }
 }
 

Kernel/KernelServices/SystemManagement/sysmng.c

@@ -12,7 +12,7 @@ void sys_next_status(const char *mode, uint32_t seconds) {
         outb(0x605, 0x20);
     }
     else if(mode[0] == 'R') {
-        __asm__ volatile ("cli");
+        cli();
         while (inb(0x64) & 0x02);
         outb(0x64, 0xFE);
     }
@@ -30,6 +30,6 @@ void exit_program(const char *mode, const char *message) {
     }
 
     while (true) {
-        __asm__ __volatile__ ("hlt");
+        hlt();
     }
 }

Kernel/KernelServices/SystemManagement/sysmng.h

@@ -5,6 +5,7 @@
 #include <OpenKernel/SystemLib/SystemIO/io.h>
 #include <OpenKernel/SystemLib/TimeMng/time.h>
 #include <OpenKernel/Drivers/Vga/vga.h>
+#include <OpenKernel/Drivers/Cpu/cpu.h>
 
 void sys_next_status(const char *mode, uint32_t seconds);
 void exit_program(const char *mode, const char *message);

SystemLib/TimeMng/time.c

@@ -1,6 +1,8 @@
 #include "time.h"
 #include <OpenKernel/Drivers/Vga/vga.h>
 #include <OpenKernel/SystemLib/SystemIO/io.h>
+#include <OpenKernel/Drivers/Cpu/cpu.h>
+#include <OpenKernel/SystemLib/TypeConversion/type_conv.h>
 
 systime sys_time = {0, 0, 0, 0, 0, 0};
 
@@ -12,10 +14,6 @@ static uint8_t rtc_read(uint8_t reg) {
     return inb(RTC_DATA);
 }
 
-static uint8_t bcd_to_bin(uint8_t val) {
-    return ((val / 16) * 10) + (val & 0x0F);
-}
-
 void uptime() {
     uint8_t sec, min, hour, day, month, year;
     sec = rtc_read(0x00);
@@ -74,6 +72,6 @@ void print_time() {
 
 void sleep(uint32_t seconds) {
     for (uint64_t i = 0; i < (uint64_t)seconds * 50000000ULL; i++) {
-        __asm__ __volatile__ ("nop");
+        nop();
     }
 }