Re: [avr-gcc-list] How to set section order

[David Bourgeois]

Yes. I noticed that without optimization, the linker keep the order the  
functions appear in the code but if I turn on optimization (-Os) then the  
smaller function comes first.

Actually the small function is
void i2cWaitForComplete(void)
{
    while( !(TWCR & _BV(TWINT)) ); /* wait for the i2c interface to  
complete operation */
}

I could simply inline it but as I'm really short in place and it 's called  
a couple of times in the bootloader, I would prefer to have it as a  
standard function.

On Wed, 18 Jan 2006 18:32:14 +0100, Eric Weddington  
<address@hidden> wrote:

> David Bourgeois wrote:
> > I have a bootloader that I would like to start at 0x0E00 in an  
> > ATMega48  (no special boot loader section in FLASH). It has 2 functions  
> > that should  be placed in the following order: bootloader(),  
> > smallFunction().
> >  I created a .bootloader section and I ask the linker to put it at  
> > 0x0E00  and associated bootloader() with tis section.
> >  But if I also put smallFunction() in the .bootloader section, then  
> > it's  placed first at 0x0E00 and bootloader() comes later which is not  
> > what I  want. It seems I need some kind of subsections like the .initX  
> > sections.  But then I'm completely lost in the linker manual.
> >  Does anybody knows how to do this?
>
> Does your smallFunction() come before bootloader() in your .c file?



--
David Bourgeois

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