Hi I want to implement new target AVR MCU's for GCC

Hi I want to implement new target AVR MCU's for GCC

[Rikard S]

Where do I start?
I guess there is only some few files that I need to write or edit,
using files for similar MCU's as "templates".

If I would like to implement new AVR targets, which files are involved?

Who knows, maby I can contribute :-)

/Best Regards Rikard Strömmer

Re: Hi I want to implement new target AVR MCU's for GCC

[N V Krishna]

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Avr-gcc has it's own list as well:
avr-gcc-list@nongnu.org

You can try there as well.

Krishna.

On Thu, 18 Aug 2005, Rikard S wrote:

# Where do I start?
# I guess there is only some few files that I need to write or edit,
# using files for similar MCU's as "templates".
#
# If I would like to implement new AVR targets, which files are involved?
#
# Who knows, maby I can contribute :-)
#
# /Best Regards Rikard Strömmer
#

Re: Hi I want to implement new target AVR MCU's for GCC

[Mike Stump]

On Aug 17, 2005, at 3:09 PM, Rikard S wrote:
> Where do I start?

I'd start by using cvs and checking out the source code from mainline  
and then fire up emacs.

> I guess there is only some few files that I need to write or edit,
> using files for similar MCU's as "templates".

Yes...

> If I would like to implement new AVR targets, which files are  
> involved?

gcc/config/avr would be the canonical place to go looking for files  
to edit.

Re: Hi I want to implement new target AVR MCU's for GCC

[Abhijit Gupta]

On 8/18/05, Rikard S <rikardcore@gmail.com> wrote:
> Where do I start?

Read the top of http://gcc.gnu.org/readings.html there's Hans-Peter
Nilsson's "Porting GCC for Dunces"
A good document to start with.

> I guess there is only some few files that I need to write or edit,
> using files for similar MCU's as "templates".
> 
> If I would like to implement new AVR targets, which files are involved?

You need to write the target.md , target.h and target.c files with
some makefile fragment in the gcc/config/<target> directory.

> 
> Who knows, maby I can contribute :-)
:-)
Regards,
Abhijit.
> 
> /Best Regards Rikard Strömmer
>

Re: Hi I want to implement new target AVR MCU's for GCC

[E. Weddington]

Rikard S wrote:

>Where do I start?
>I guess there is only some few files that I need to write or edit,
>using files for similar MCU's as "templates".
>
>If I would like to implement new AVR targets, which files are involved?
>
>Who knows, maby I can contribute :-)
>
>/Best Regards Rikard Strömmer
>
>  
>
Please note that the avr-libc project has all of the developers working 
on the AVR port of the GNU toolchain. avr-libc can be found at Savannah at:
<http://savannah.nongnu.org/projects/avr-libc>

If you would like to implement new devices in the AVR target then be 
aware that:
- you will have to modify GNU Binutils, GCC, and avr-libc.
- and that your device may already be implemented. The avr-libc Patch 
Manager has a number of patches already that implement a lot of new 
devices. We've been waiting for one of the AVR maintainers of GCC (in 
the CC list) to find the time to formally commit them to Binutils or GCC.

If you want more information about the AVR target, I would suggest 
getting on the avr-libc-dev mailing list (part of the avr-libc project 
at Savannah).

Eric Weddington