r227088 - For NetBSD/ARM-EB, link with --be8. Support for the older BE32 is

[Joerg Sonnenberger]

On Mon, Jan 26, 2015 at 03:16:31PM -0800, Tim Northover wrote:
> > Well, my optimistic assumption is/was that all systems that care are
> > already supported NetBSD was just missing. So (a) which systems run on
> > ARM-EB at all (b) do they care about BE8 vs BE32 (c) what link flags do
> > they need.
> 
> I think it affects anyone using ld.bfd for big-endian ARM code. The
> ideal behaviour is probably:
> 
> 1. >=v7 (& v6m) code must pass --be8  (CPU only understands BE8 output)
> 2. <=v5 code mustn't pass --be8 (CPU does not understand BE8 output)
> 3. v6 code may or may not. (it's configurable in SCTLR) It probably
> should for neatness, but unfortunately compatibility with GCC probably
> requires us not to.

Well, attached patch implements the above for NetBSD and refactores it
into a function other toolchains can call.

Joerg
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