[LLVMdev] Fwd: Building VMKit

[nicolas geoffray]

Hi Joshua,

What plans did you have for GC? No GC at all or Avian JVM has its own GC
(and is it precise or not?)?

If you're not planning on using VMKit's GCs, then 64-bit system should not
be a big problem: the only problem that we have now is compiling GNU
Classpath, and most probably Avian JVM has its own version of the class
libraries?

Also, note that platform support will be strongly dependent on LLVM support.

Nicolas

On Tue, Jul 20, 2010 at 4:41 PM, Joshua Warner <joshuawarner32 at gmail.com>wrote:

> Hi Nicolas,
>
> Thanks for all your help, but if 64-bit systems are still a big problem,
> perhaps the VMKit AOT compiler is not the best solution to my problem.  I'd
> like to be able to support the major (if not all all) platforms that the
> Avian JVM supports - x86 & x86_64 linux & windows, powerpc darwin and ARM.
>
> Regards,
> Joshua
>
>
> On Tue, Jul 20, 2010 at 8:00 AM, nicolas geoffray <
> nicolas.geoffray at gmail.com> wrote:
>
>> Hi Joshua,
>>
>> If you can get a running 32bit system, I'd suggest you do so, as you'll
>> get up to speed right away. I can't test VMKit on a 64bits machine, and I
>> have been aware that there are some compilation/execution problems. Besides,
>> the current GCs of VMKit do not work on 64bits (neither MMTk nor GCMmap2).
>>
>> Nicolas
>>
>>
>> On Tue, Jul 20, 2010 at 3:56 PM, Joshua Warner <joshuawarner32 at gmail.com>wrote:
>>
>>> Hi Minas,
>>>
>>> I tried recompiling Classpath with -fno-omit-frame-pointer, and now,
>>> instead of printing an error message, j3 just segfaults in
>>> "j3::JnjvmClassLoader::loadClassFromAsciiz(char const*, bool, bool) ()"
>>>
>>> I ran llcj under strace and found that it is not even opening the input
>>> or output files, but is otherwise running normally.
>>>
>>> Updating to the latest SVN version (revision 108831) didn't change
>>> anything (I was only a few days out of date).
>>>
>>> I'm not sure where to go from here.  Does this fit with any of the known
>>> problems under 64-bit linux?
>>>
>>> Thanks,
>>> Joshua
>>>
>>>
>>> On Mon, Jul 19, 2010 at 4:45 PM, Minas Abrahamyan <minas.subs at gmail.com>wrote:
>>>
>>>> Hi Joshua,
>>>> > $ j3 Hello
>>>> > j3: JavaClass.cpp:480: j3::JavaObject* j3::Class::doNew(j3::Jnjvm*):
>>>> > Assertion `(this->isInitializing() ||
>>>> > classLoader->getCompiler()->isStaticCompiling()) && "Uninitialized
>>>> class
>>>> > when allocating."' failed.
>>>> > Aborted
>>>>
>>>> Regarding to j3 in 64 bit version, it should work now after we've
>>>> found crush reason,
>>>> both in Debug and in Release versions. (and its 32 bit version was
>>>> continuously working)
>>>>
>>>> But your case is something strange, crush didn't type such messages.
>>>> Have you taken VMkit from svn and latest version?
>>>> Also, to get j3 running recompile classpath with
>>>> -fno-omit-frame-pointer (or take my patch from here:
>>>>
>>>> http://lists.cs.uiuc.edu/pipermail/vmkit-commits/attachments/20100719/35754a6f/attachment.bin
>>>> and apply it:
>>>> $ cd classpath-0.97.2
>>>> $ patch ./configure ./classpath_configure64.patch
>>>> )
>>>>
>>>> That's now on j3
>>>>
>>>> Regards,
>>>> Minas
>>>>
>>>> On Mon, Jul 19, 2010 at 9:20 PM, Joshua Warner <
>>>> joshuawarner32 at gmail.com> wrote:
>>>> > Forgot to send to the mailing list...
>>>> >
>>>> > ---------- Forwarded message ----------
>>>> > From: Joshua Warner <joshuawarner32 at gmail.com>
>>>> > Date: Mon, Jul 19, 2010 at 10:19 AM
>>>> > Subject: Re: [LLVMdev] Building VMKit
>>>> > To: nicolas geoffray <nicolas.geoffray at gmail.com>
>>>> >
>>>> >
>>>> > Thanks Nicolas, that worked great!
>>>> >
>>>> > Now, I'm having trouble invoking the compiler properly:
>>>> > $ llcj Hello.class -o=Hello.ll
>>>> > $ cat Hello.ll
>>>> > cat: Hello.ll: No such file or directory
>>>> > $ j3 Hello
>>>> > j3: JavaClass.cpp:480: j3::JavaObject* j3::Class::doNew(j3::Jnjvm*):
>>>> > Assertion `(this->isInitializing() ||
>>>> > classLoader->getCompiler()->isStaticCompiling()) && "Uninitialized
>>>> class
>>>> > when allocating."' failed.
>>>> > Aborted
>>>> > $ java Hello
>>>> > hello, world!
>>>> >
>>>> > "Hello" is a completely banal "hello world!" program.
>>>> >
>>>> > Joshua
>>>> _______________________________________________
>>>> LLVM Developers mailing list
>>>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>>>> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>>>>
>>>
>>>
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>>>
>>
>
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