fixed libc and sprintf

kernel/klib/sprintf.c

@@ -1,5 +1,6 @@
 #include "sprintf.h"
 #include "string.h"
+#include "../video/terminal.h"
 
 #define SIGN(X) X > 0 ? 1 : -1
 #define ARG(TYPE) (TYPE)va_arg(ap, TYPE)
@@ -174,18 +175,14 @@ int sprintf(char* str, const char* format, ...) {
 //
 //}
 
-static void (*print_fun)(const char *string, size_t length) = NULL;
-
-
-void set_print_fun(void* fun) {
-    print_fun = fun;
-}
 int kprintf(const char* format, ...) {
     va_list ap;
     int ret;
 
     va_start(ap, format);
 
+    terminal_handler_t print_fun = get_terminal_handler();
+
     if(!print_fun)
         ret = -1;
     else {

kernel/klib/sprintf.h

@@ -12,8 +12,6 @@ int snprintf(char *str, size_t size, const char *format, ...);
 int vsprintf(char *str, const char *format, va_list ap);
 int vsnprintf(char *str, size_t size, const char *format, va_list ap);
 
-
-void set_print_fun(void* fun);
 int kprintf(const char* format, ...);
 
 #endif

kernel/klib/string.c

@@ -210,7 +210,8 @@ int memcmp (const void* _buf1, const void* _buf2, size_t n) {
 
 
 void * memcpy (void * _dest, const void *_src, size_t n) {
-    uint8_t* src=_src,*dest=_dest;
+    const uint8_t* src=_src;
+    uint8_t*       dest=_dest;
 
     for(;n > 0; --n)
         *(dest++) = *(src++);
@@ -232,6 +233,7 @@ void * memset (void * _buf, int _ch, size_t n) {
     if(n >= 8) {
         uint64_t ch64 = ch | (ch << 8);
         ch64 = ch64 | (ch64 << 16);
+        ch64 = ch64 | (ch64 << 32);
 
         for(;n > 0; n -= 8) {
             *(uint64_t*)buf = ch64;