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I have just tested it on my XO and the Geode DOES NOT support the
ffreep instruction. It could explain the halting shutdown when it
stalls with a signal 15 (which happens to be SIGILL) and only
continuing it when I switch to the other console (as I reported in
[1]). So fixing it and creating a 803 is absolutely necessary IMHO.<br>
<br>
[1] <a class="moz-txt-link-freetext" href="http://lists.laptop.org/pipermail/devel/2009-May/024356.html">http://lists.laptop.org/pipermail/devel/2009-May/024356.html</a><br>
<br>
Sascha Silbe wrote:
<blockquote cite="mid:20090505122042.GA17901@twin.sascha.silbe.org"
type="cite">Hi!
<br>
<br>
While trying to use sugar-jhbuild on DebXO (Debian on XO-1), I
encountered several programs that crashed with SIGILL, apparently
during execution of ffreep. While the "AMD Athlon Processor x86 Code
Optimization Guide" [1] claims that "although insufficiently documented
in the past, [ffreep] is supported by all 32-bit x86 processors", the
AMD Geode LX datasheet [2] doesn't list ffreep.
<br>
<br>
As ffreep was added to gcc 3.4 [3] and Build 801 seems to use 4.3.0,
I'm wondering whether it has been patched/configured in some way to
avoid this issue or whether the processor actually supports it and
something else on my machine is broken.
<br>
<br>
<br>
[1]
<a class="moz-txt-link-freetext" href="http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/22007.pdf">http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/22007.pdf</a>
<br>
[2]
<a class="moz-txt-link-freetext" href="http://www.amd.com/files/connectivitysolutions/geode/geode_lx/33234d_lx_ds.pdf">http://www.amd.com/files/connectivitysolutions/geode/geode_lx/33234d_lx_ds.pdf</a>
<br>
[3] <a class="moz-txt-link-freetext" href="http://gcc.gnu.org/ml/gcc-patches/2002-11/msg01386.html">http://gcc.gnu.org/ml/gcc-patches/2002-11/msg01386.html</a>
<br>
<br>
CU Sascha
<br>
<br>
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</blockquote>
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