[LLVMdev] How to run vmjc created .bc files?

[nicolas geoffray]

Hi Michael,

Sorry for the long delay.

Could you update vmkit? I have made some changes and tried your example, and
it worked fine.

Cheers,
Nicolas

On Wed, Dec 9, 2009 at 5:35 AM, Michael Wu <mmwu at princeton.edu> wrote:

> Hi,
>
>   I've managed to compile it the class down to a native executable.
> However, the executable runs for a while then spits out:
>
> terminate called without an active exception
> Aborted
>
> and dies.
>
> The program never gets to the normal output.
>
> Here is a stack trace from gdb:
>
> #0  0xf3f6baa6 in raise () from /lib/libc.so.6
> #1  0xf3f6d3a8 in abort () from /lib/libc.so.6
> #2  0xf41918f8 in __gnu_cxx::__verbose_terminate_handler () from
> /usr/lib/libstdc++.so.6
> #3  0xf418f7d5 in ?? () from /usr/lib/libstdc++.so.6
> #4  0xf418f812 in std::terminate () from /usr/lib/libstdc++.so.6
> #5  0xf418f94a in __cxa_throw () from /usr/lib/libstdc++.so.6
> #6  0x0806d4d0 in jnjvm::JavaThread::throwPendingException ()
> #7  0x0808c118 in jnjvm::JavaMethod::invokeJavaObjectStaticAP ()
> #8  0x0808c2ba in jnjvm::JavaMethod::invokeJavaObjectStatic ()
> #9  0x0806e3a0 in jnjvm::Jnjvm::loadAppClassLoader ()
> #10 0x08072488 in jnjvm::Jnjvm::loadBootstrap ()
> #11 0x080725e5 in jnjvm::Jnjvm::mainJavaStart ()
> #12 0x080b2556 in mvm::Thread::internalThreadStart ()
> #13 0xf408dfc0 in start_thread () from /lib/libpthread.so.0
> #14 0xf4011e7e in clone () from /lib/libc.so.6
>
> The java file itself is very simple:
>
> public class NumProcs {
>
>   /**
>    * Displays the number of processors available in the Java Virtual
> Machine
>    */
>   public static void main(String[] args) {
>       Runtime runtime = Runtime.getRuntime();
>
>       int nrOfProcessors = runtime.availableProcessors();
>
>       System.out.println("Number of processors available to the Java
> Virtual Machine: " + nrOfProcessors);
>   }
> }
>
> I just updated to the latest revision in svn.
>
> Michael
>
> nicolas geoffray wrote:
>
>> Hi Michael,
>>
>>
>>
>> On Tue, Dec 8, 2009 at 6:26 PM, Michael Wu <mmwu at princeton.edu <mailto:
>> mmwu at princeton.edu>> wrote:
>>
>>    Hi,
>>
>>      Thanks a lot for the help! I am getting some errors though:
>>
>>    I am on a 32 bit chroot on a x86_64 system. Thus llc guesses the
>>    wrong architecture from the module bitcode and spits out x86_64
>>    assembly. I fixed this by adding "-march=x86" to the llc options
>>    in llcj.
>>
>>
>> OK.
>>
>>
>>    gcc doesn't know what -lgc is. I'm guessing it is the garbage
>>    collection library. How can I get it or point gcc to the right
>>    library?
>>
>>
>> -lgc is for the boehmgc in case you configured vmkit to use it. Since you
>> don't need it (vmkit uses its own gc by default), you should change the
>> tools/llcj/llcj.cpp file, remove the line with "-lgc" and recompile it. Yes,
>> it's _that_ of a new feature yet :)
>>
>>
>>    llcj -mem2reg MemberVar.class
>>    /usr/bin/ld: cannot find -lgc
>>
>>    collect2: ld returned 1 exit status
>>
>>    If I have class files that depends on other class files, will llcj
>>    be able to find those and compile them into the executable as well?
>>
>>
>> No, but you can create a big .jar file containing all the class files you
>> need.
>>
>>    Also, I have an addition to the Java standard library backported
>>    from Java 7, which is necessary for my project. JSR166:
>>    http://gee.cs.oswego.edu/dl/concurrency-interest/
>>
>>
>> Add it to the big .jar file.
>>
>>    Of course, I'm not sure JnJvm supports multiple cores, but this is
>>    more a proof of concept than anything.
>>
>>
>> OK, if it has native functions, chances are jnjvm does not implement them.
>>
>>    Should I just insert the necessary classes into glibj.zip and
>>    recompile libvmjc.so?
>>
>>
>> You can do that, or just insert them to your .jar file.
>> Cheers,
>> Nicolas
>>
>>    Thanks,
>>    Michael
>>
>>    nicolas geoffray wrote:
>>
>>        Hi Michael,
>>
>>        Currently, you can run vmjc created .bc files by statically
>>        linking them with all the .o needed files. For that, you can
>>        use the llcj tool, which works more or less like GCC's gcj tool.
>>
>>        Note that you also need to create the libvmjc.so file, which
>>        contains the standard library in native form. Do a make in the
>>        tools/vmjc/libvmjc directory. Once this is done, update the
>>        LD_LIBRARY_PATH shell variable to contain this file, and
>>        update PATH to contain the llvm tools and the vmkit tools. You
>>        will then be able to use llcj.
>>
>>        Let me know if that helped. I will write a more detailed howto
>>        on vmkit's website in a few days.
>>
>>        Nicolas
>>
>>        On Sun, Dec 6, 2009 at 10:07 PM, Michael Wu
>>        <mmwu at princeton.edu <mailto:mmwu at princeton.edu>
>>        <mailto:mmwu at princeton.edu <mailto:mmwu at princeton.edu>>> wrote:
>>
>>           Hi,
>>
>>              What do I need to link with vmjc created .bc files to
>>        actually run
>>           the .bc file? I tried running with lli but only got:
>>           LLVM ERROR: Program used external function
>>        'StartJnjvmWithoutJIT'
>>           which
>>           could not be resolved!
>>
>>           Thanks,
>>           Michael
>>           _______________________________________________
>>           LLVM Developers mailing list
>>           LLVMdev at cs.uiuc.edu <mailto:LLVMdev at cs.uiuc.edu>
>>        <mailto:LLVMdev at cs.uiuc.edu <mailto:LLVMdev at cs.uiuc.edu>>
>>           http://llvm.cs.uiuc.edu
>>
>>
>>           http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>>
>>
>>
>>
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