--- /dev/null	2006-11-30 17:00:00.000000000 -0700
+++ include/avr/builtins.h	2008-12-04 09:44:13.575895200 -0700
@@ -0,0 +1,101 @@
+/* Copyright (c) 2008 Anatoly Sokolv
+   All rights reserved.
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are met:
+
+   * Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+
+   * Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in
+     the documentation and/or other materials provided with the
+     distribution.
+
+   * Neither the name of the copyright holders nor the names of
+     contributors may be used to endorse or promote products derived
+     from this software without specific prior written permission.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+  POSSIBILITY OF SUCH DAMAGE. */
+
+/* $Id:$ */
+
+/*
+   avr/builtins.h - 
+ */
+ 
+#ifndef _AVR_BUILTINS_H_
+#define _AVR_BUILTINS_H_
+
+/** \file */
+/** \defgroup avr_builtins <avr/builtins.h>: GCC builtins
+    \code #include <avr/builtins.h> \endcode
+
+    This header file declares avr builtins.  */
+
+/** 
+    \ingroup avr_builtins
+
+    Enables interrupts by setting the global interrupt mask.  */
+extern void __builtin_avr_sei(void);
+
+/** 
+    \ingroup avr_builtins
+
+    Disables all interrupts by clearing the global interrupt mask.  */
+extern void __builtin_avr_cli(void);
+
+/** 
+    \ingroup avr_builtins
+
+    TODO.  */
+
+extern void __builtin_avr_sleep(void);
+
+/** 
+    \ingroup avr_builtins
+
+    TODO.  */
+extern void __builtin_avr_wdr(void);
+
+/** 
+    \ingroup avr_builtins
+
+    TODO.  */
+extern unsigned char __builtin_avr_swap(unsigned char __b);
+
+/** 
+    \ingroup avr_builtins
+
+    TODO.  */
+extern unsigned int __builtin_avr_fmul(unsigned char __a, unsigned char __b);
+
+/** 
+    \ingroup avr_builtins
+
+    TODO.  */
+extern int __builtin_avr_fmuls(char __a, char __b);
+
+/** 
+    \ingroup avr_builtins
+
+    TODO.  */
+extern int __builtin_avr_fmulsu(char __a, unsigned char __b);
+
+/** 
+    \ingroup avr_builtins
+
+    TODO.  */
+extern void __builtin_avr_delay_cycles(unsigned long __n);
+
+#endif /* _AVR_BUILTINS_H_ */
\ No newline at end of file
Index: include/avr/Makefile.am
===================================================================
RCS file: /sources/avr-libc/avr-libc/include/avr/Makefile.am,v
retrieving revision 1.34.2.8
diff -u -p -r1.34.2.8 Makefile.am
--- include/avr/Makefile.am	3 Nov 2008 04:13:14 -0000	1.34.2.8
+++ include/avr/Makefile.am	4 Dec 2008 16:50:28 -0000
@@ -32,6 +32,7 @@
 avrdir = $(prefix)/avr/include/avr
 avr_HEADERS = \
     boot.h \
+    builtins.h \
     common.h \
     crc16.h \
     delay.h \