[Sablevm-developer] Report: SableVM on various architectures

[Grzegorz B. P. <ga...@de...>]

Hi all!

During the weekend I put heavy burden on Debian's porting machines
to find out on which architectures SableVM works and to what extent.

SUMMARY:

Fully and surely working inlined: i386, ia64, ppc, sparc
Fully and surely working direct: s390
Needs final test to declare (hopefully) working inlined: m68k
To be tested yet (quickly, but they are promising): arm, hppa
Breaks running BTF on any engine: alpha

MORE DETAILED INFO:

* alpha - broken for anything non-trivial, inlined doesn't work.
  - HelloWorld works in non-inlined.
  - BTF shows serious problems w/ integer operations in non-inlined.
  - In Inlinability Testing Mode even slow versions of two mod
    instructions cause errors.
  (diagnosis: weird, need to look at assembly level what's going on.
   non-inlined probably would be not too hard to fix.)

* arm - jikes brokenness and GNU CP broken --without-java param
  prevented me from testing it. Put as "try" on "Soon TODO".

* hppa - libffi didn't make it into .deb yet, got binaries today
  and will try it as soon as I merge tausq's hppa changes into
  staging (I thought it was already done!)

* i386 - everything works

* ia64 - everything works (now)
  - updated inlinability info
  - corner cases handling added

* m68k - everything should work (will be known until monday noon)
  - m68ks are sloooow - 2-3h to compile one flavor of SableVM!
  - updated inlinability info
  - inlined-testing mode shows no errors in inlinability nor
    any corner cases problems that BTF checks
  - it is compiling inlined and inlined-nosig now
  (diagnosis: good chances to have it 100% working)

* powerpc - everything works (but I couldn't check)
  - as I don't have ppc machine I was unable to run tests on ppc,
  but everything worked and I don't think anything got broken since.
  (just in case requested installation of sablevm build-deps on
  debian ppc porting machine, should be available soon)

* s390 - non-inlined works perfectly (now), serious problems in inlined
  - fixed all corner cases where BTF revealed problems
  - inlined seems severly broken, ex. GET/PUT-FIELD/STATIC *fast*
    versions fail! (similarly as some of them on alpha)
  (diagnosis: weird, need to look at assembly level what's going on.)

* sparc - everything works

I'll be sending updates. Cheers,

				Grzegorz B. Prokopski

PS: To make such work as easy as possible in future I created a set
of scripts that make it easy to run completly unattended tests
of many flavors of SableVM on many machines at the same time.
To see what I mean go to:
http://gadek.debian.net/testing/massive.png
this was all ran by a single "enter" ;-)
(...these evil shell scripts - I'll learn some more perl next time)

In future this should also allow to easily test SableVM every few
weeks, whether anything on any architecture got broken/unbroken.
Running ex. mauve tests on all these arches also sounds interesting.

-- 
Grzegorz B. Prokopski <ga...@de...>
Debian GNU/Linux      http://www.debian.org
SableVM - LGPLed JVM  http://www.sablevm.org
Why SableVM ?!?       http://devel.sablevm.org/wiki/WhySableVM