CTAOS v2

kernel/include/system.h

@@ -0,0 +1,85 @@
+#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