From 68ddfab8a4fa6f56c5f8bff6d91facd39abe353b Mon Sep 17 00:00:00 2001
From: Nilay Vaish <nilay@cs.wisc.edu>
Date: Thu, 6 Nov 2014 05:42:20 -0600
Subject: [PATCH] ruby: remove the function functionalReadBuffers() This
 function was added when I had incorrectly arrived at the conclusion that such
 a function can improve the chances of a functional read succeeding. As was
 later realized, this is not possible in the current setup.  While the code
 using this function was dropped long back, this function was not.  Hence the
 patch.

---
 .../slicc_interface/AbstractController.hh     |  7 ++----
 src/mem/slicc/symbols/StateMachine.py         | 24 -------------------
 2 files changed, 2 insertions(+), 29 deletions(-)

diff --git a/src/mem/ruby/slicc_interface/AbstractController.hh b/src/mem/ruby/slicc_interface/AbstractController.hh
index f30967e48..98fce574f 100644
--- a/src/mem/ruby/slicc_interface/AbstractController.hh
+++ b/src/mem/ruby/slicc_interface/AbstractController.hh
@@ -76,11 +76,8 @@ class AbstractController : public ClockedObject, public Consumer
     virtual void recordCacheTrace(int cntrl, CacheRecorder* tr) = 0;
     virtual Sequencer* getSequencer() const = 0;
 
-    //! These functions are used by ruby system to read/write the message
-    //! queues that exist with in the controller.
-    //! The boolean return value indicates if the read was performed
-    //! successfully.
-    virtual bool functionalReadBuffers(PacketPtr&) = 0;
+    //! These functions are used by ruby system to read/write the data blocks
+    //! that exist with in the controller.
     virtual void functionalRead(const Address &addr, PacketPtr) = 0;
     //! The return value indicates the number of messages written with the
     //! data from the packet.
diff --git a/src/mem/slicc/symbols/StateMachine.py b/src/mem/slicc/symbols/StateMachine.py
index 736013612..009680941 100644
--- a/src/mem/slicc/symbols/StateMachine.py
+++ b/src/mem/slicc/symbols/StateMachine.py
@@ -285,7 +285,6 @@ class $c_ident : public AbstractController
     void recordCacheTrace(int cntrl, CacheRecorder* tr);
     Sequencer* getSequencer() const;
 
-    bool functionalReadBuffers(PacketPtr&);
     uint32_t functionalWriteBuffers(PacketPtr&);
 
     void countTransition(${ident}_State state, ${ident}_Event event);
@@ -988,29 +987,6 @@ $c_ident::${{action.ident}}(const Address& addr)
         for func in self.functions:
             code(func.generateCode())
 
-        # Function for functional reads from messages buffered in the controller
-        code('''
-bool
-$c_ident::functionalReadBuffers(PacketPtr& pkt)
-{
-''')
-        for var in self.objects:
-            vtype = var.type
-            if vtype.isBuffer:
-                vid = "m_%s_ptr" % var.ident
-                code('if ($vid->functionalRead(pkt)) { return true; }')
-
-        for var in self.config_parameters:
-            vtype = var.type_ast.type
-            if vtype.isBuffer:
-                vid = "m_%s_ptr" % var.ident
-                code('if ($vid->functionalRead(pkt)) { return true; }')
-
-        code('''
-                return false;
-}
-''')
-
         # Function for functional writes to messages buffered in the controller
         code('''
 uint32_t