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Re: [avr-gcc-list] Where is the Startup Code source.


From: Joerg Wunsch
Subject: Re: [avr-gcc-list] Where is the Startup Code source.
Date: Thu, 2 Nov 2006 23:50:02 +0100 (MET)

"Anatoly Sokolov" <address@hidden> wrote:

>> (For new AVRs, it's actually initialed three times: the hardware
>> itself initializes the SP to the top of internal RAM now.)

> You have full list of these devices?  For them it is possible to
> remove initialization of stack pointer in the startup code.

No, I don't.  I've only noticed it in a recent datasheet, it appears
to be a very recent change.  (E. g. the ATmega1281 we are using still
start out with SP set to 0.)

I think the initialization would better remain in the startup code, as
it also allows people to customize their stack location easily.

-- 
cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/                        NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)





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