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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: How do I disable elaboration code on this
Date: Fri, 15 Apr 2011 09:38:08 +0100
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Date: 2011-04-15T09:38:08+01:00
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Simon Wright <simon@pushface.org> writes:

> Simon Wright <simon@pushface.org> writes:
>
>> The part about the LSB being set to 1 may cause difficulty! I suppose
>> one could say "Foo'Address + 1" (which means the vector would have to be
>> an array of System.Address, not so good but I think unavoidable??)
>
> And then we're back to the 'no elaboration code' problem.
>
> Does the LSB really have to be set to 1? The Cortex-M3 only implements
> Thumb instructions, doesn't it?

It turns out that (at GCC 4.6.0, binutils 2.21) GCC -mthumb marks
functions (subprograms) with the assembler directive .thumb_func; GAS
then sets the least significant bit in references to the subprogram. So,
no human interaction required.