removed some duplicate code

kern/emu/misc.c

@@ -62,70 +62,14 @@ grub_util_error (const char *fmt, ...)
   exit (1);
 }
 
-void *
-grub_malloc (grub_size_t size)
-{
-  return malloc (size);
-}
-
-void *
-grub_zalloc (grub_size_t size)
-{
-  void *ret;
-
-  ret = malloc (size);
-  memset (ret, 0, size);
-  return ret;
-}
-
-void
-grub_free (void *ptr)
-{
-  free (ptr);
-}
-
-void *
-grub_realloc (void *ptr, grub_size_t size)
-{
-  return realloc (ptr, size);
-}
-
-void *
-grub_memalign (grub_size_t align, grub_size_t size)
-{
-  void *p;
-
-#if defined(HAVE_POSIX_MEMALIGN)
-  if (align < sizeof (void *))
-    align = sizeof (void *);
-
-  else if (align % sizeof (void *))
-    grub_fatal ("bad alignment");
-
-  if (posix_memalign (&p, align, size) != 0)
-    p = 0;
-#elif defined(HAVE_MEMALIGN)
-  p = memalign (align, size);
-#else
-  (void) align;
-  (void) size;
-  grub_fatal ("grub_memalign is not supported");
-#endif
-
-  if (! p)
-    grub_fatal ("out of memory");
-
-  return p;
-}
-
 void *
 xmalloc (grub_size_t size)
 {
   void *p;
 
-  p = grub_malloc (size);
+  p = malloc (size);
   if (! p)
-    grub_fatal ("out of memory");
+    grub_util_error ("out of memory");
 
   return p;
 }
@@ -133,9 +77,9 @@ xmalloc (grub_size_t size)
 void *
 xrealloc (void *ptr, grub_size_t size)
 {
-  ptr = grub_realloc (ptr, size);
+  ptr = realloc (ptr, size);
   if (! ptr)
-    grub_fatal ("out of memory");
+    grub_util_error ("out of memory");
 
   return ptr;
 }
@@ -146,13 +90,43 @@ xstrdup (const char *str)
   size_t len;
   char *newstr;
 
-  len = grub_strlen (str);
+  len = strlen (str);
   newstr = (char *) xmalloc (len + 1);
-  grub_memcpy (newstr, str, len + 1);
+  memcpy (newstr, str, len + 1);
 
   return newstr;
 }
 
+#ifndef HAVE_VASPRINTF
+
+int
+vasprintf (char **buf, const char *fmt, va_list ap)
+{
+  /* Should be large enough.  */
+  *buf = xmalloc (512);
+
+  return vsprintf (*buf, fmt, ap);
+}
+
+#endif
+
+#ifndef  HAVE_ASPRINTF
+
+int
+asprintf (char **buf, const char *fmt, ...)
+{
+  int status;
+  va_list ap;
+
+  va_start (ap, fmt);
+  status = vasprintf (*buf, fmt, ap);
+  va_end (ap);
+
+  return status;
+}
+
+#endif
+
 char *
 xasprintf (const char *fmt, ...)
 {