Add blocksize functions to physical memory. Fix the port we were using in the process loader.

mem/physical.cc:
    Implement the blockSize function, return VMPageSize for the physical memory
mem/port.hh:
    Add a function to get a pointer to a peer, needed for initVirtMem to work in the loader.
sim/process.cc:
    The way the translating port is setup we don't want the memory port, we want the peer port associated with that memory.  We may need to revisit this.

--HG--
extra : convert_revision : 46a51d448d1683db7bd5afe64adbe167a5743060

mem/physical.cc

@@ -164,6 +164,13 @@ PhysicalMemory::prot_memset(Addr addr, uint8_t val, int size)
     memset(pmem_addr + addr - base_addr, val, size);
 }
 
+int
+PhysicalMemory::deviceBlockSize()
+{
+    //For now the largest accesses we can take are Page Sized
+    return VMPageSize;
+}
+
 void
 PhysicalMemory::serialize(ostream &os)
 {

mem/port.hh

@@ -93,6 +93,11 @@ class Port
     */
     void setPeer(Port *port) { peer = port; }
 
+        /** Function to set the pointer for the peer port.
+        @todo should be called by the configuration stuff (python).
+    */
+    Port *getPeer(Port *port) { return peer; }
+
   protected:
 
     /** These functions are protected because they should only be

sim/process.cc

@@ -154,7 +154,7 @@ Process::startup()
     if (execContexts.empty())
         fatal("Process %s is not associated with any CPUs!\n", name());
 
-    initVirtMem = new TranslatingPort(system->physmem->getPort("any"), pTable);
+    initVirtMem = new TranslatingPort((system->physmem->getPort("any"))->getPeer(), pTable);
 
     // first exec context for this process... initialize & enable
     ExecContext *xc = execContexts[0];