[LLVMdev] How to run vmjc created .bc files?
mmwu at princeton.edu
Tue Dec 8 09:26:20 PST 2009
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.
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?
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?
Also, I have an addition to the Java standard library backported from
Java 7, which is necessary for my project. JSR166:
Of course, I'm not sure JnJvm supports multiple cores, but this is more
a proof of concept than anything.
Should I just insert the necessary classes into glibj.zip and recompile
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.
> On Sun, Dec 6, 2009 at 10:07 PM, Michael Wu <mmwu at princeton.edu
> <mailto:mmwu at princeton.edu>> wrote:
> 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'
> could not be resolved!
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