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RE: FW: How to add new target device (MCU)?

Thanks a lot for Ian's reply!

Now I'm starting to trace files in gcc/config/avr.
But I can't find "avr-mcus.def" in the folder, neither in the whole gcc-4.6.2 source code.

I googled and found that it's some kind of patch.
So, maybe I can ignore "avr-mcus.def"?



----- ååää ----
åäèï Ian Lance Taylor <iant@google.com>
æäèï MathEE <math_ee@yahoo.com.tw>
åæï "gcc-help@gcc.gnu.org" <gcc-help@gcc.gnu.org>
åäææï 2011/11/16 (ä) 11:06 PM
äæï Re: FW:  How to add new target device (MCU)?

MathEE <math_ee@yahoo.com.tw> writes:

> I'm trying to find out a way to add a new target MCU (say, T123) such that I can compile C and/or Assembly into instruction set of this T123.
> Then, just like "-mmcu=attiny24", I can use "-mmcu=T123" to get the Hex/Bin for T123.
>
> Or shortly, how to support a new target device?
>
> Of course, I have all information needed about this T123.
> But I have no idea what/how to do?
> Could somebody please be so kind to help/teach me??

Look at the files in gcc/config/avr. Specifically, avr-mcus.def and
avr-devices.c.

Ian
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