[avr-gcc-list] Re: [avr-libc-dev] noinitdata section ?

[daniel_laptop]

Joerg Wunsch wrote:

> As Theodore A. Roth wrote:
>
> > Is it possible to tell the linker where to put the .noinit section
> > (i.e. at an address in a device that is memory mapped into the
> > external sram space)?
>
> avr-gcc ... -Wl,--section-start=.noinit=0x802000 ...
>
> The only crock is that the 0x800000 offset used for normal .data
> variables needs to be added manually.  (The linker complains about
> your .noinit getting outside of the data region otherwise.)
>

Looking at map files this also moves "__heap_start" to (0x802000 + size of
noinit).
Is it possible to set __heap_start to __bss_end at link time ?
or does it have to be done at runtime with __malloc_heap_start

Thanks
Daniel


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