[avr-gcc-list] Porting Atmel patches

[Adam Seychell]

Hi

I have joined this list to get help with port 8bit AVR patches 
disributed with Atmel's AVR toolchain to the current official GCC, and 
binutils. As you may be aware, Atmel have separated development from the 
official gcc, binutils and avr-libc projects. I am new making 
contributions to FSF and so I am initially interested the procedures 
involved.

I understand to match the full list of devices supported by Atmel's 
toolchain requires contributions to all three FSF projects: gcc, 
binutils, and avr-libc. Atmel have done most the work by supplying 
patches and device header files. However the patches may not be applied 
to the development releases of the official projects because the patches 
are made for gcc-4.6.2, binutils 2.22 and avr-libc 1.8.0. The Atmel 
patches are available from the downloadable toolchain:
 
http://www.atmel.com/Images/avr-toolchain-installer-3.4.1.1195-win32.win32.x86.exe

I have managed to apply the patches to the official binutils 2.22 and 
avr-libc 1.8.0 and successfully build them on my cygwin system. The 
gcc-4.6.2 patches from Atmel will not work on current gcc-4.7.2 as the 
code structure for device definitions has changed. However I managed to 
extract devices information contained in Atmel patches (with help of a 
small perl script) and integrate them to gcc 4.7.2. This only involved 
modifying two files in gcc-4.7.2 source:
gcc/config/avr-devices.c
gcc/config/avr-mcus.def

Now that I have successfully built gcc, binutils and avr-libc supporting 
all AVR devices offered by Atmel, would it be worth my while trying to 
submitting these changes to the official releases  ?

Adam Seychell