Slight cleanup of utils.c

Also added the missing memX functions needed for compilation.
Interrupts next, I do believe.

kernel/utils.c

@@ -39,8 +39,29 @@ void memcpy(void* dest, void* src, size_t n) {
 	}
 }
 
+void* memmove (void *dest, const void *src, size_t len) {
+  const char *s = (char *)src;
+  char *d = (char *)dest;
+
+  const char *nexts = s + len;
+  char *nextd = d + len;
+
+  if (d < s) {
+    while (d != nextd) {
+      *d++ = *s++;
+    }
+  }
+  else {
+    while (nextd != d) {
+      *--nextd = *--nexts;
+    }
+  }
+  return dest;
+}
+
+
 /*
-	Memory Set. Required by GCC>
+	Memory Set. Required by GCC.
  *  @param src:  The data to be overwritten.
  *  @param chr:  The byte to overwrite the source with.
  *  @param n:    How many bytes to overwrite.
@@ -52,6 +73,19 @@ void memset(void* src, int chr, size_t n) {
 	}
 }
 
+int memcmp (const void *str1, const void *str2, size_t count) {
+  const unsigned char *s1 = (unsigned char *)str1;
+  const unsigned char *s2 = (unsigned char *)str2;
+
+  while (count-- > 0) {
+    if (*s1++ != *s2++) {
+      return s1[-1] < s2[-1] ? -1 : 1;
+    }
+  }
+  return 0;
+}
+
+
  /*
 	Turns an integer into a C-str.
   * @note   Inefficient and unsafe.
@@ -165,7 +199,7 @@ void empty_string(char* string) {
 
   * @param  cause: A string, telling the basic reason for the crash.
   */
-void panic(char* cause) {
+void panic() {
 	printf("Kernel Halted.");
 
 	for(;;);