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From: Lucretia <Lucretia9000@yahoo.co.uk>
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Subject: Re: How do I disable elaboration code on this
Date: Mon, 11 Apr 2011 16:08:22 -0700 (PDT)
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Date: 2011-04-11T16:08:22-07:00
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On Apr 11, 12:59=A0pm, Simon Clubley <clubley@remove_me.eisner.decus.org-
Earth.UFP> wrote:

> On Cortex M3 devices using C, this array is placed in it's own section
> and is placed at address 0 by the linker script.

Yup, easy in C. just a static const array of pointers to functions in
a separate file, the linker is then used to slap it into place.

> The issue here is that when the Cortex M3 comes out of reset it reads,
> and loads, the stack pointer from the first longword in that array
> and then jumps to the address specified by the second longword.
>
> To Luke: are you targetting only the Cortex M3 or traditional ARM7
> devices as well ?

Not yet. It's just that the M3 doesn't actually need ASM for C/C++
projects, I wanted to see if I could do the same from Ada.

At the moment, I have a Cortex-M3 board so that shall be my target, I
intend to write an equivalent of CMSIS for use as the BSP for these
chips.

As for ARM7 or other ARM's, there's no real reason why you couldn't
provide something similar. No need for a wrapper, as depending on the
platform, you'd provide a different BSP and a different startup and
for bigger ARM's, that'd be ASM. This ASM could be conditionally
assembled if need be for different ARM's.

Thanks,
Luke.