Small code fix up

- Moved memcmp function to temporary libc/mem.h
- I/O functions are inlined
- ATA_DEVICE read function won't print the 512 bytes by default

src/kernel/drivers/ata/ataDevice.cpp

@@ -180,7 +180,8 @@ void ATA_DEVICE::Read(uint16_t DEVICE_CHANNEL,  DEVICE_DRIVE drive, uint32_t LBA
     for ( int i = 0; i < 256; i++){
         uint16_t data;
         asm volatile ("inw %1, %0" : "=a"(data): "Nd"(DEVICE_CHANNEL));
-        printf (" %x ", data);
+       // printf (" %x ", data);
+
         buffer[i] = data;
     }
     

src/kernel/kernel.cpp

@@ -2,7 +2,6 @@
 #define GB4 524288
 #define GB2 262144
 
-int memcmp( const void* ptr1, const void* ptr2, size_t num);
 
 extern "C" void kernel_main (void);
 
@@ -34,27 +33,10 @@ extern "C" void kernel_main (void);
         initGDT();
      
 
-
         kernel_main();
     }
 
-    int memcmp( const void* ptr1, const void* ptr2, size_t num)
-    {
-        const unsigned char * cs = (const unsigned char*) ptr1;
-        const unsigned char * ct = (const unsigned char*) ptr2;
-
-
-        for (int i = 0 ; i < num ; i++, cs++, ct++ ){
-           if( *cs < *ct){
-               return -1;
-           } else if( *cs > *ct){
-               return 1;
-           }
-        } 
-
-        return 0;
-
-    }
+    
 
     extern "C" void kernel_main (void) {
 
@@ -105,9 +87,5 @@ extern "C" void kernel_main (void);
             printf( "UTC time: %02d-%02d-%02d %02d:%02d:%02d  [ Formatted as YY-MM-DD h:mm:ss]\r" ,year, month, day, hour, minute, second);
             delay(1000);
         }
-            
-
         
-       
     }   
-

src/kernel/serial.h

@@ -3,7 +3,7 @@
 #include "tty/kterm.h"
 #include "io.h"
 #define PORT 0x3f8 
-static int init_serial() {
+inline static int init_serial() {
    outb(PORT + 1, 0x00);    // Disable all interrupts
    outb(PORT + 3, 0x80);    // Enable DLAB (set baud rate divisor)
    outb(PORT + 0, 0x03);    // Set divisor to 3 (lo byte) 38400 baud
@@ -25,33 +25,33 @@ static int init_serial() {
    return 0;
 }
 
-int is_transmit_empty() {
+inline int is_transmit_empty() {
    return inb(PORT + 5) & 0x20;
 }
  
-void write_serial(char a) {
+inline void write_serial(char a) {
    while (is_transmit_empty() == 0);
  
    outb(PORT,a);
 }
 
-int serial_received() {
+inline int serial_received() {
    return inb(PORT + 5) & 1;
 }
  
-char read_serial() {
+inline char read_serial() {
    while (serial_received() == 0);
  
    return inb(PORT);
 }
 
-void print_serial(const char* string ){
+inline void print_serial(const char* string ){
     for(size_t i = 0; i < strlen(string); i ++){
         write_serial(string[i]);
     }
 }
 
-void test_serial(){
+inline void test_serial(){
         /** Serial test **/
         kterm_writestring("Writing to COM1 serial port:");
         init_serial();

src/kernel/tty/kterm.cpp

@@ -1,5 +1,4 @@
 #include "kterm.h"
-
 static const size_t VGA_WIDTH = 80;
 static const size_t VGA_HEIGHT = 25;
 
@@ -173,6 +172,13 @@ static void itoa (char *buf, int base, int d) {
 
 }
 
+
+/**
+ * @brief For now this will not only write to VGA memory but also write to serial 
+ * 
+ * @param format 
+ * @param ... 
+ */
 void printf ( const char *format, ...) {
     
     char **arg = (char **)&format;