Re: Problem with sableVM on AIX Platforms

Hello David,
I have been able to build and run sabvlevm+classpath quite 
successfully(*) on Mac OS X, using PowerPC CPU. It may be that there 
are  differences between PowerPC and POWER(AIX) instruction sets but I 
think (hope) those would be relatively minor. But perhaps not.

When you have the opportunity, can you point me to the specific bug 
about assembly code?

Thanks.....Peter


  * there's one minor patch required related to definition of socklen_t, 
which was mentioned on the list recently and for which I'm working on a 
patch.


On Dec 20, 2004, at 2:27 PM, David Bélanger wrote:

>
>>
>> *	Secondly, the code does not recognize the Endianess of the machine 
>> and throws an error in the native/fdlibm/ieeefp.h file stating 
>> "Endianess not declared!!" error. As a resolution I had added the 
>> following lines of code in the header file:
>>
>> 		#if (defined(_AIX) && _AIX)
>> 		#define __IEEE_BIG_ENDIAN
>> 		#endif
>>
>
> I had similar problems with OS X.  I see:
>
> #if defined (__PPC__) || defined (__ppc__)
> #if (defined(_BIG_ENDIAN) && _BIG_ENDIAN) || (defined(_AIX) && _AIX) \
>     || defined (__APPLE__)
> #define __IEEE_BIG_ENDIAN
> #else
> #if (defined(_LITTLE_ENDIAN) && _LITTLE_ENDIAN) || (defined(__sun__)
>  && __sun__)
>  || (defined(__WIN32__) && __WIN32__)
> #define __IEEE_LITTLE_ENDIAN
> #endif
> #endif
> #endif
>
> So I guess __PPC__ or __ppc__ not defined.  Am not not quite sure what
> would actually be the correct way to fix it.
>
>> Though I am able to successfully build the libraries using the 
>> following configure command, can anyone confirm that this will not 
>> lead to problems as it seems the sableVM code does not support the 
>> AIX platforms.
>>
>> ./configure --prefix=/opt/seclient1                 \
>>              --enable-java                          \
>>              --with-jikes                           \
>>              --enable-jni                           \
>>              --disable-gtk-peer                     \
>>              --with-find=/usr/linux/bin/find        \
>>                CPPFLAGS=-I/opt/seclient1/include    \
>>                LDFLAGS=-L/opt/seclient1/lib  2>&1 | tee ../conf.out
>>
>> Moreover the sableVM code also does not recognise the IBM 
>> architecture and gives problems with the Assembly code.
>>
>
> There is a bug report about the assembly code issue:
> http://sablevm.org/bugs  (SableVM website seems down currently...)
>
> Either problems with assembly syntax or instructions used unsupported 
> by
> that CPU.  I don't think any of the current SableVM developer have
> access to a AIX machine.  There are a few lines of assembly code for 
> two
> task:
> 1) compare and swap implementation (synchronization primitive)
> 2) flushing/invalidating the the instruction cache
> These should be all located in file:
> src/libsablevm/system.c (and/or .h)
>
>
> David