Re: [Gems-users] questions about how to modify the makeRequest interface function

["shanshuchang" <shanshuchang@xxxxxxxxx>]

I makes an error here. The sequencer::makeRequest(CacheMsg) is called by OpalInterface::makeRequest(). So I may additionally add a new field to struct CacheMsg, right?

----- Original Message -----

From: shanshuchang

To: gems-users@xxxxxxxxxxx

Sent: Monday, November 30, 2009 3:32 PM

Subject: questions about how to modify the makeRequest interface function

Hi all,

 

I want to modify the makeRequest() function, which is the interface function between functional module OPAL(simics) and memory module RUBY. Here I would like to add a new field "access_seq" for each "memop" instruction and pass that value to the RUBY and SLICC protocol module so that the RUBY and the cache controller will be aware of the sequence of any memop instructions.

 

The makeRequest() function interface in RUBY module is like this:

 

 void  OpalInterface::makeRequest(int  cpuNumber, la_t logicalAddr, pa_t physicalAddr,
                                 int  requestSize, OpalMemop_t typeOfRequest,
                                 la_t virtualPC, int isPriv, int thread)

 

The modified version:

void  OpalInterface::makeRequest(int  cpuNumber, la_t logicalAddr, pa_t physicalAddr,
                                 int  requestSize, OpalMemop_t typeOfRequest,
                                 la_t virtualPC, int isPriv, int thread, int access_seq)

 

Also, the makeRequest function interface in OPAL module is modified accordingly:

 

rubycache_t：        void (*makeRequest)( int cpuNumber, la_t logicalAddr, pa_t physicalAddr,
                                 int requestSize, OpalMemop_t typeOfRequest,
                                 la_t virtualPC, int isPriv, int thread, int access_seq);

 

There are also makeRequest() function instances within the Ruby/Sequencer.C file. But the comments suggests that it was related with SIMICS(I am running RUBY+OPAL).

 

 

I am not sure whether the modification above would be right and I am looking forward to your advices!

 

Any help will be appreciated!

 

Regards,

shuchang