1 files changed, 62 insertions, 0 deletions
diff --git a/stdio-common/reg-type.c b/stdio-common/reg-type.c
new file mode 100644
index 0000000000..7a96b2893a
--- /dev/null
+++ b/stdio-common/reg-type.c
@@ -0,0 +1,62 @@
+/* Copyright (C) 2009 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <printf.h>
+#include <stdlib.h>
+#include <bits/libc-lock.h>
+
+
+/* Array of functions indexed by format character.  */
+libc_freeres_ptr (printf_va_arg_function **__printf_va_arg_table)
+  attribute_hidden;
+
+__libc_lock_define_initialized (static, lock);
+
+/* Last type allocated.  */
+static int pa_next_type = PA_LAST;
+
+
+int
+__register_printf_type (printf_va_arg_function fct)
+{
+  int result = -1;
+  __libc_lock_lock (lock);
+
+  if (__printf_va_arg_table == NULL)
+    {
+      __printf_va_arg_table = (printf_va_arg_function **)
+	calloc (0x100 - PA_LAST, sizeof (void *));
+      if (__printf_va_arg_table == NULL)
+	goto out;
+    }
+
+  if (pa_next_type == 0x100)
+    __set_errno (ENOSPC);
+  else
+    {
+      result = pa_next_type++;
+      __printf_va_arg_table[result - PA_LAST] = fct;
+    }
+
+ out:
+  __libc_lock_unlock (lock);
+
+  return result;
+}
+weak_alias (__register_printf_type, register_printf_type)