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

[Michael Wu]

I am using GNU classpath 0.97.2 as provided by Ubuntu.

Michael

Michael Wu 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
>>            _______________________________________________
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>>            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
>>
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>>
>>
>>
>>     
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