diff --git a/include/common.h b/include/common.h
new file mode 100644
index 00000000..cc533fbf
--- /dev/null
+++ b/include/common.h
@@ -0,0 +1,53 @@
+/*
+ * $Id$
+ *
+ * Common header file
+ * Copyright (C) 2002 ETC s.r.o.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written by Marcel Telka <marcel@telka.sk>, 2002.
+ *
+ */
+
+#ifndef	COMMON_H
+#define	COMMON_H
+
+#ifndef LANGUAGE
+#	ifdef __ASSEMBLY__
+#		define LANGUAGE ASM
+#	else
+#		define LANGUAGE C
+#	endif
+#endif
+
+#ifndef ASM
+#define	ASM	0
+#endif
+
+#ifndef C
+#define	C	1
+#endif
+
+#if LANGUAGE == C
+#ifndef uint32_t
+typedef	unsigned int	uint32_t;
+#endif
+#endif /* LANGUAGE == C */
+
+#define	bit(x)		(1 << x)
+
+#endif /* COMMON_H */