Re: Porting Sable VM to SH4

Hello,

I thank you for your quick response.

I've also contacted Kaz Kojima who seems to have a whole lot of 
experience with SH4 (it's a processor), and Anthony Green for an SH4 
version of the libffi library, and both helped me a lot. After some 
adjustments, I even managed to make sablevm and sablevm-classpath. As 
soon as everything works, I will send you the files (system.h and 
system.c) as well as the adapted libffi version, and the method how I 
got it working.

But now I have an error while trying to start a simple Hello world example.

When I run the command '/usr/local/sablevm/bin/sablevm -v Test' I get a 
java.lang.UnsatisfiedLinkError:

[verbose jni: JNI_CreateJavaVM]
[verbose gc: allocating initial heap (16777216 bytes)]
[verbose class: loading "java/lang/Object"]
[verbose class: loading "java/io/Serializable"]
[verbose class: loading "java/lang/Cloneable"]
[verbose class: creating "[B"]
[verbose class: loading "java/lang/VMClass"]
[verbose class: loading "java/lang/Class"]
[verbose class: loading "java/lang/StackTraceElement"]
[verbose class: loading "java/lang/StringCreator"]
[verbose class: loading "java/lang/VirtualMachine"]
[verbose class: loading "java/lang/reflect/Constructor"]
[verbose class: loading "java/lang/reflect/AccessibleObject"]
[verbose class: loading "java/lang/reflect/Member"]
[verbose class: loading "java/lang/reflect/Field"]
[verbose class: loading "java/lang/reflect/InvocationTargetException"]
[verbose class: loading "java/lang/Exception"]
[verbose class: loading "java/lang/Throwable"]
[verbose class: loading "java/lang/reflect/Method"]
[verbose class: loading "java/nio/ByteBuffer$vm"]
[verbose class: creating "[Ljava/lang/reflect/Field;"]
[verbose class: creating "[Z"]
[verbose class: creating "[S"]
[verbose class: creating "[C"]
[verbose class: creating "[I"]
[verbose class: creating "[J"]
[verbose class: creating "[F"]
[verbose class: creating "[D"]
[verbose class: loading "java/lang/ArithmeticException"]
[verbose class: loading "java/lang/RuntimeException"]
[verbose class: loading "java/lang/ArrayIndexOutOfBoundsException"]
[verbose class: loading "java/lang/IndexOutOfBoundsException"]
[verbose class: loading "java/lang/ArrayStoreException"]
[verbose class: loading "java/lang/ClassCastException"]
[verbose class: loading "java/lang/IllegalMonitorStateException"]
[verbose class: loading "java/lang/NegativeArraySizeException"]
[verbose class: loading "java/lang/NoSuchFieldException"]
[verbose class: loading "java/lang/NoSuchMethodException"]
[verbose class: loading "java/lang/NullPointerException"]
[verbose class: loading "java/lang/InterruptedException"]
[verbose class: loading "java/lang/AbstractMethodError"]
[verbose class: loading "java/lang/IncompatibleClassChangeError"]
[verbose class: loading "java/lang/LinkageError"]
[verbose class: loading "java/lang/Error"]
[verbose class: loading "java/lang/ClassCircularityError"]
[verbose class: loading "java/lang/ClassFormatError"]
[verbose class: loading "java/lang/ExceptionInInitializerError"]
[verbose class: loading "java/lang/InternalError"]
[verbose class: loading "java/lang/VirtualMachineError"]
[verbose class: loading "java/lang/NoClassDefFoundError"]
[verbose class: loading "java/lang/NoSuchFieldError"]
[verbose class: loading "java/lang/NoSuchMethodError"]
[verbose class: loading "java/lang/OutOfMemoryError"]
[verbose class: loading "java/lang/UnsatisfiedLinkError"]
[verbose class: loading "java/lang/UnsupportedClassVersionError"]
[verbose class: loading "java/lang/VerifyError"]
[verbose class: loading "java/lang/ClassLoader"]
[verbose class: loading "java/lang/VMObject"]
[verbose class: loading "java/lang/SecurityManager"]
[verbose class: loading "java/lang/ClassLoader$StaticData"]
[verbose class: loading "java/lang/VMClassLoader"]
[verbose class: loading "java/util/HashMap"]
[verbose class: loading "java/util/AbstractMap"]
[verbose class: loading "java/util/Map"]
[verbose class: loading "java/util/HashMap$HashEntry"]
[verbose class: loading "java/util/AbstractMap$BasicMapEntry"]
[verbose class: loading "java/util/Map$Entry"]
[verbose class: creating "[Ljava/util/HashMap$HashEntry;"]
[verbose class: loading "java/lang/String"]
[verbose class: loading "java/lang/Comparable"]
[verbose class: loading "java/lang/CharSequence"]
[verbose class: creating "[Ljava/lang/String;"]
[verbose class: loading "java/lang/VMSystem"]
[verbose class: loading "java/lang/VMString"]
[verbose class: loading "java/util/WeakHashMap"]
[verbose class: loading "java/util/WeakHashMap$1"]
[verbose class: loading "java/util/WeakHashMap$WeakEntrySet"]
[verbose class: loading "java/util/AbstractSet"]
[verbose class: loading "java/util/AbstractCollection"]
[verbose class: loading "java/util/Collection"]
[verbose class: loading "java/util/Set"]
[verbose class: loading "java/lang/ref/ReferenceQueue"]
[verbose class: loading "java/util/WeakHashMap$WeakBucket"]
[verbose class: loading "java/lang/ref/WeakReference"]
[verbose class: loading "java/lang/ref/Reference"]
[verbose class: creating "[Ljava/util/WeakHashMap$WeakBucket;"]
[verbose class: loading "java/lang/Math"]
[verbose class: loading "java/lang/System"]
[verbose class: loading "java/io/BufferedInputStream"]
[verbose class: loading "java/io/FilterInputStream"]
[verbose class: loading "java/io/InputStream"]
[verbose class: loading "java/io/FileInputStream"]
[verbose class: loading "java/io/FileDescriptor"]
[verbose class: loading "gnu/java/nio/channels/FileChannelImpl"]
[verbose class: loading "java/nio/channels/FileChannel"]
[verbose class: loading 
"java/nio/channels/spi/AbstractInterruptibleChannel"]
[verbose class: loading "java/nio/channels/Channel"]
[verbose class: loading "java/nio/channels/InterruptibleChannel"]
[verbose class: loading "java/nio/channels/ByteChannel"]
[verbose class: loading "java/nio/channels/ReadableByteChannel"]
[verbose class: loading "java/nio/channels/WritableByteChannel"]
[verbose class: loading "java/nio/channels/GatheringByteChannel"]
[verbose class: loading "java/nio/channels/ScatteringByteChannel"]
[verbose class: loading "java/lang/Runtime"]
[verbose class: loading "gnu/classpath/SystemProperties"]
[verbose class: loading "java/util/Properties"]
[verbose class: loading "java/util/Hashtable"]
[verbose class: loading "java/util/Dictionary"]
[verbose class: loading "java/util/Hashtable$HashEntry"]
[verbose class: creating "[Ljava/util/Hashtable$HashEntry;"]
[verbose class: loading "gnu/classpath/VMSystemProperties"]
[verbose class: loading "java/util/WeakHashMap$WeakBucket$WeakEntry"]
[verbose class: loading "java/lang/StringBuffer"]
[verbose class: loading "java/util/Hashtable$3"]
[verbose class: loading "java/util/Collections$SynchronizedSet"]
[verbose class: loading "java/util/Collections$SynchronizedCollection"]
[verbose class: loading "java/util/Collections$SynchronizedIterator"]
[verbose class: loading "java/util/Iterator"]
[verbose class: loading "java/util/Hashtable$HashIterator"]
[verbose class: loading "java/util/StringTokenizer"]
[verbose class: loading "java/util/Enumeration"]
[verbose class: loading "gnu/classpath/VMStackWalker"]
[verbose class: loading "java/lang/VMRuntime"]
[verbose class: loading "java/io/StringWriter"]
[verbose class: loading "java/io/Writer"]
[verbose class: loading "java/io/PrintWriter"]
java.lang.UnsatisfiedLinkError: Native library `javanio' not found (as 
file `libjavanio') in gnu.classpath.boot.library.path and java.library.path
[verbose gc: total gc time = 0 sec 0 usec]


The weird thing is I do find libjavanio on my system in 
/usr/local/sablevm/lib/sablevm-classpath/

Any idea where this dynamic linking goes wrong?

Greetz,

Vincent




Etienne Gagnon wrote:

>Hi Vincent,
>
>I guess, from the lack of replies, that nobody has yet attempted such a
>port.
>
>I do not know SH4.  What kind of system is it (processor, OS, etc.)?  It
>seems you have identified the important parts of SableVM that need to be
>written for a new system (system.[ch] and jni_system_specific.h).
>
>Just ask on this list if you need help with specific issues.  We'll do
>what wecan to help you.
>
>Would you like a sandbox to share your development publicly and simplify
>future integration of your port into the trunk?  You'll find our
>contribution policy at:
>
>http://sablevm.org/svn/repository/sablevm/trunk/doc/contribution_policy.txt
>
>Etienne
>
>Vincent Verstraete wrote:
>  
>
>>Hello,
>>
>>I'm currently trying to port the Sable VM to the SH4 platform, but my
>>attempts have not yet succeeded. I've been google-ing for this problem,
>>but I am not really satisfied with what I found during my search (small
>>bits of information everywhere but nothing really of much use).
>>Therefore my questions to this Sable VM developers group:
>>
>>- Has some work already been done on this subject?
>>- If the work has already been done, can anyone provide me with a snapshot?
>>- If not, is there any place where I could find the unfinished attempts?
>>This would be a good starting point for me, certainly the
>>compare_and_swap atomic operation in system.c.
>>
>>Thanks in advance,
>>
>>Vincent
>>
>>_______________________________________________
>>SableVM-devel mailing list
>>[email protected]
>>http://sablevm.org/lists/control/listinfo/sablevm-devel
>>
>>    
>>
>
>  
>