MEM: Move port creation to the memory object(s) construction

This patch moves all port creation from the getPort method to be
consistently done in the MemObject's constructor. This is possible
thanks to the Swig interface passing the length of the vector ports.
Previously there was a mix of: 1) creating the ports as members (at
object construction time) and using getPort for the name resolution,
or 2) dynamically creating the ports in the getPort call. This is now
uniform. Furthermore, objects that would not be complete without a
port have these ports as members rather than having pointers to
dynamically allocated ports.

This patch also enables an elaboration-time enumeration of all the
ports in the system which can be used to determine the masterId.

1 files changed, 5 insertions, 0 deletions

diff --git a/src/mem/bus.hh b/src/mem/bus.hh
index f7f69e08e..7fdf5db26 100644
--- a/src/mem/bus.hh
+++ b/src/mem/bus.hh
@@ -287,6 +287,11 @@ class Bus : public MemObject
     bool inRetry;
     std::set<int> inRecvRangeChange;
 
+    // keep track of the number of master ports (not counting the
+    // default master) since we need this as an offset into the
+    // interfaces vector
+    unsigned int nbrMasterPorts;
+
     /** An ordered vector of pointers to the peer port interfaces
         connected to this bus.*/
     std::vector<BusPort*> interfaces;