EABI and ARM context switching

[Lennert Buytenhek]

On Mon, Dec 11, 2006 at 09:31:22AM +0100, Koen Kooi wrote:

> >> No, it doesn't, it's a vanilla xscale v2 based CPU.
> > 
> > Are you using a particular CPU tuning?  I am working with (and tuning
> > for) an ARM926EJ-S, and will need to choose a tuning for an IXP425
> > soon.  You need at least armv5t for EABI, right?
> 
> If you apply
> http://www.openembedded.org/repo/org.openembedded.dev/packages/gcc/gcc-4.1.1/unbreak-armv4t.patch
> to gcc 4.1.1 it magically support EABI on armv4t as well. The only (possibly eabi related)
> bug I have reported for OE built software on armv4t/eabi is
> http://bugs.openembedded.org/show_bug.cgi?id=1616

I have since rebuilt perl half a dozen times, both the Debian sid and
the FC6 perl, for armv4t and armv5te, and haven't reproduced this
miscompilation.

If you used -Os on your build, you can almost certainly make the
miscompilation go away with -O1 or -O2.

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