Re: [Gems-users] Problem building GEMS 2.0 for x86 target

[Dan Gibson <degibson@xxxxxxxx>]

To speak preemptively, you also need not check for LDDA instructions under x86.

Jayaram Bobba wrote:

GEMS 2.0 has the necessary changes to port Ruby (without LogTM features) 
to x86. However the port had some bugs.
We have incorporated fixes in the forthcoming version (which will be 
released soon).
Meanwhile, you could comment out the troublesome lines of code or use 
macros to remove those lines for x86. For eg.,

#ifdef SPARC
typedef v9_memory_transaction_t memory_transaction_t;
#else
typedef x86_memory_transaction_t memory_transaction_t;

I believe the SPARC specific features that throw up errors are used only 
by LogTM.
So commenting them out should be safe if you only use non-LogTM features 
on x86.

Jayaram

Dan Gibson wrote:
  

I would suggest using GEMS 2.0 and manually porting Ruby to x86. It is 
really not all that difficult, and the x86 patch for the prior version 
makes a pretty good guide.

Regards,
Dan

divya ramakrishnan wrote:
    

Hi,

I am using GEMS 2.0 with Simics 3.0.30. I was able to compile and 
load ruby with the target as SPARC. But when I try it for a x86 
target I get the following error  in ruby/simcis/SimicsProcessor.C. I 
made the changes for x86 in the common/Makefile_simicsversion

 simics/SimicsProcessor.C: In member function `CacheRequestType 
SimicsProcessor::getRequestType(const 
memory_transaction_t*)':simics/SimicsProcessor.C:650: error: 'const 
struct x86_memory_transaction' has no member named 'address_space'
simics/SimicsProcessor.C:687: error: `SIMICS_is_ldda' was not 
declared in this scope
make[1]: *** 
[amd64-linux/generated/MOESI_CMP_token/obj/SimicsProcessor.o] Error 1
make[1]: Leaving directory `/home/simics/GEMS/gems-2.0/ruby'
make: *** [all] Error 2

I know there is a patch for SPARC to x86 target on the website, but 
that is under version 1.1. The files replaced by the patch are for 
the previous version of GEMS. Those files do not have some changes 
that have been made in the 2.0 version. Is there a patch for the 
conversion in GEMS 2.0? Or should I manually read the files in the 
patch and make the changes to the 2.0 version?

Please help me out with this problem.

Thank you,
Divya Ramakrishnan
University of Cincinnati


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