#ifndef __SYSTEM_H
#define __SYSTEM_H
#include <sys/declarat.h>

#define true 1
#define false 0

byte *TextVideoRam;
volatile static int cursor_x, cursor_y;
int current_mode_width;
int current_mode_height;

void *memcpy(void *dest, const void *src, int count)
{
    const char *sp = (const char *)src;
    char *dp = (char *)dest;
    for(; count != 0; count--) *dp++ = *sp++;
    return dest;
}

void *memset(void *dest, char val, int count)
{
    char *temp = (char *)dest;
    for( ; count != 0; count--) *temp++ = val;
    return dest;
}

unsigned short *memsetw(unsigned short *dest, unsigned short val, int count)
{
    unsigned short *temp = (unsigned short *)dest;
    for( ; count != 0; count--) *temp++ = val;
    return dest;
}


// strlen -- Get lenght of str
int strlen (const char *str)
{
      int i;
      for (i = 0; *str!=0; str++) i++;
      return i;
}

int strcmp(const char *pStr1, const char *pStr2)
{
    char c1, c2;
    int v;

    do {
        c1 = *pStr1++;
        c2 = *pStr2++;
        /* the casts are necessary when pStr1 is shorter & char is signed */
        v = (unsigned int)c1 - (unsigned int)c2;
    } while ((v == 0) && (c1 != '\0'));

    return v;
}



byte inportb (word _port) {
      byte rv;
      __asm__ __volatile__ ("inb %1, %0" : "=a" (rv) : "dN" (_port));
      return rv;
}
byte inb (word _port) {
      byte rv;
      __asm__ __volatile__ ("inb %1, %0" : "=a" (rv) : "dN" (_port));
      return rv;
}

static inline void iowait() {
      asm volatile ("outb %al, $0x80");
}


void outportb (word _port, byte _data) {
      __asm__ __volatile__ ("outb %1, %0" : : "dN" (_port), "a" (_data));
}
void outb (word _port, byte _data) {
      __asm__ __volatile__ ("outb %1, %0" : : "dN" (_port), "a" (_data));
}


#endif