MEM: Add port proxies instead of non-structural ports

Port proxies are used to replace non-structural ports, and thus enable
all ports in the system to correspond to a structural entity. This has
the advantage of accessing memory through the normal memory subsystem
and thus allowing any constellation of distributed memories, address
maps, etc. Most accesses are done through the "system port" that is
used for loading binaries, debugging etc. For the entities that belong
to the CPU, e.g. threads and thread contexts, they wrap the CPU data
port in a port proxy.

The following replacements are made:
FunctionalPort      > PortProxy
TranslatingPort     > SETranslatingPortProxy
VirtualPort         > FSTranslatingPortProxy

--HG--
rename : src/mem/vport.cc => src/mem/fs_translating_port_proxy.cc
rename : src/mem/vport.hh => src/mem/fs_translating_port_proxy.hh
rename : src/mem/translating_port.cc => src/mem/se_translating_port_proxy.cc
rename : src/mem/translating_port.hh => src/mem/se_translating_port_proxy.hh

1 files changed, 10 insertions, 4 deletions

diff --git a/src/sim/system.hh b/src/sim/system.hh
index 9efe37651..eedd11e85 100644
--- a/src/sim/system.hh
+++ b/src/sim/system.hh
@@ -71,8 +71,8 @@ class PhysicalMemory;
 
 #if FULL_SYSTEM
 class Platform;
-class FunctionalPort;
-class VirtualPort;
+class PortProxy;
+class FSTranslatingPortProxy;
 #endif
 class GDBListener;
 class BaseRemoteGDB;
@@ -111,6 +111,12 @@ class System : public MemObject
   public:
 
     /**
+     * After all objects have been created and all ports are
+     * connected, check that the system port is connected.
+     */
+    virtual void init();
+
+    /**
      * Get a pointer to the system port that can be used by
      * non-structural simulation objects like processes or threads, or
      * external entities like loaders and debuggers, etc, to access
@@ -175,8 +181,8 @@ class System : public MemObject
 
     /** Port to physical memory used for writing object files into ram at
      * boot.*/
-    FunctionalPort *functionalPort;
-    VirtualPort *virtPort;
+    PortProxy* physProxy;
+    FSTranslatingPortProxy* virtProxy;
 
     /** kernel symbol table */
     SymbolTable *kernelSymtab;