[PATCH] Clean up ARM compressed loader

[u.kleine-koenig@pengutronix.de (Uwe Kleine-König)]

On Wed, Feb 24, 2010 at 04:20:18PM +0100, Hector Martin wrote:
> Russell King - ARM Linux wrote:
> > It does work with the previous version of the decompressor.
> 
> Sure, at this point in time. The broken code is still the loader, not
> the new decompressor. If a GCC update had been the culprit, it wouldn't
> be GCC's fault. The fact remains that the behavior is undefined and
> (with current GCC versions) requires carefully crafting the resulting C
> code in order to get reasonable behavior. I don't think you can
> reasonably require that a generic descompressor be maintained by others
> with care for compatibility with this hack; someone would have to police
> changes for potential issues, and you still have a decent chance of
> getting breakage if GCC decides to change its behavior some day. I'd say
> fixing the loader to not require this undefined behavior is a
> considerably better long-term solution.
> 
> > I noticed that you did not reply to my previous email on this subject,
> > are you intentionally ignoring my responses?
> 
> You had a valid point which I hadn't considered (running ROM images from
> RAM), so I figured I'd give addressing that a shot before going into
> discussion mode.
Independant of the outcome of this discussion I suggest reverting the
switch to the new decompressor for .33.  Hectors patch definitely isn't
.33 material and broken or not the old decompressor was more reliable.

In general I would welcome to get rid of -Dstatic=, but it needs
careful consideration.

Best regards
Uwe

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Pengutronix e.K.                           | Uwe Kleine-K?nig            |
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