ext: Include SystemC 2.3.1 into gem5

In the past it happened several times that some changes in gem5 broke the
SystemC coupling. Recently Accelera has changed the licence for SystemC
from their own licence to Apache2.0, which is compatible with gem5.
However, SystemC usually relies on the Boost library, but I was able to
exchange the boost calls by c++11 alternatives. The recent SystemC version
is placed into /ext and is integrated into gem5's build system. The goal is
to integrate some SystemC tests for the CI in some following patches.

Change-Id: I4b66ec806b5e3cffc1d7c85d3735ff4fa5b31fd0
Reviewed-on: https://gem5-review.googlesource.com/2240
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>

1 files changed, 223 insertions, 0 deletions

diff --git a/ext/systemc/src/sysc/datatypes/fx/sc_fxval_observer.h b/ext/systemc/src/sysc/datatypes/fx/sc_fxval_observer.h
new file mode 100644
index 000000000..e34d85c1b
--- /dev/null
+++ b/ext/systemc/src/sysc/datatypes/fx/sc_fxval_observer.h
@@ -0,0 +1,223 @@
+/*****************************************************************************
+
+  Licensed to Accellera Systems Initiative Inc. (Accellera) under one or
+  more contributor license agreements.  See the NOTICE file distributed
+  with this work for additional information regarding copyright ownership.
+  Accellera licenses this file to you under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with the
+  License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+  implied.  See the License for the specific language governing
+  permissions and limitations under the License.
+
+ *****************************************************************************/
+
+/*****************************************************************************
+
+  sc_fxval_observer.h - 
+
+  Original Author: Martin Janssen, Synopsys, Inc.
+
+ *****************************************************************************/
+
+/*****************************************************************************
+
+  MODIFICATION LOG - modifiers, enter your name, affiliation, date and
+  changes you are making here.
+
+      Name, Affiliation, Date:
+  Description of Modification:
+
+ *****************************************************************************/
+
+// $Log: sc_fxval_observer.h,v $
+// Revision 1.1.1.1  2006/12/15 20:20:04  acg
+// SystemC 2.3
+//
+// Revision 1.3  2006/01/13 18:53:58  acg
+// Andy Goodrich: added $Log command so that CVS comments are reproduced in
+// the source.
+//
+
+#ifndef SC_FXVAL_OBSERVER_H
+#define SC_FXVAL_OBSERVER_H
+
+
+#include "sysc/datatypes/fx/sc_fxdefs.h"
+
+
+namespace sc_dt
+{
+
+// classes defined in this module
+class sc_fxval_observer;
+class sc_fxval_fast_observer;
+
+// forward class declarations
+class sc_fxval;
+class sc_fxval_fast;
+
+
+#ifdef SC_ENABLE_OBSERVERS
+
+#define SC_FXVAL_OBSERVER_CONSTRUCT_(object)                                  \
+    SC_OBSERVER_(object,sc_fxval_observer*,construct)
+#define SC_FXVAL_OBSERVER_DESTRUCT_(object)                                   \
+    SC_OBSERVER_(object,sc_fxval_observer*,destruct)
+#define SC_FXVAL_OBSERVER_READ_(object)                                       \
+    SC_OBSERVER_(object,sc_fxval_observer*,read)
+#define SC_FXVAL_OBSERVER_WRITE_(object)                                      \
+    SC_OBSERVER_(object,sc_fxval_observer*,write)
+#define SC_FXVAL_OBSERVER_DEFAULT_                                            \
+    SC_OBSERVER_DEFAULT_(sc_fxval_observer)
+
+#define SC_FXVAL_FAST_OBSERVER_CONSTRUCT_(object)                             \
+    SC_OBSERVER_(object,sc_fxval_fast_observer*,construct)
+#define SC_FXVAL_FAST_OBSERVER_DESTRUCT_(object)                              \
+    SC_OBSERVER_(object,sc_fxval_fast_observer*,destruct)
+#define SC_FXVAL_FAST_OBSERVER_READ_(object)                                  \
+    SC_OBSERVER_(object,sc_fxval_fast_observer*,read)
+#define SC_FXVAL_FAST_OBSERVER_WRITE_(object)                                 \
+    SC_OBSERVER_(object,sc_fxval_fast_observer*,write)
+#define SC_FXVAL_FAST_OBSERVER_DEFAULT_                                       \
+    SC_OBSERVER_DEFAULT_(sc_fxval_fast_observer)
+
+#else
+
+#define SC_FXVAL_OBSERVER_CONSTRUCT_(object)
+#define SC_FXVAL_OBSERVER_DESTRUCT_(object)
+#define SC_FXVAL_OBSERVER_READ_(object)
+#define SC_FXVAL_OBSERVER_WRITE_(object)
+#define SC_FXVAL_OBSERVER_DEFAULT_
+
+#define SC_FXVAL_FAST_OBSERVER_CONSTRUCT_(object)
+#define SC_FXVAL_FAST_OBSERVER_DESTRUCT_(object)
+#define SC_FXVAL_FAST_OBSERVER_READ_(object)
+#define SC_FXVAL_FAST_OBSERVER_WRITE_(object)
+#define SC_FXVAL_FAST_OBSERVER_DEFAULT_
+
+#endif
+
+
+// ----------------------------------------------------------------------------
+//  CLASS : sc_fxval_observer
+//
+//  Abstract base class for fixed-point value type observers;
+//  arbitrary precision.
+// ----------------------------------------------------------------------------
+
+class sc_fxval_observer
+{
+
+protected:
+    
+    sc_fxval_observer() {}
+    virtual ~sc_fxval_observer() {}
+
+public:
+
+    virtual void construct( const sc_fxval& );
+    virtual void  destruct( const sc_fxval& );
+    virtual void      read( const sc_fxval& );
+    virtual void     write( const sc_fxval& );
+
+    static sc_fxval_observer* (*default_observer) ();
+
+};
+
+
+// ----------------------------------------------------------------------------
+//  CLASS : sc_fxval_fast_observer
+//
+//  Abstract base class for fixed-point value type observers;
+//  limited precision.
+// ----------------------------------------------------------------------------
+
+class sc_fxval_fast_observer
+{
+
+protected:
+    
+    sc_fxval_fast_observer() {}
+    virtual ~sc_fxval_fast_observer() {}
+
+public:
+
+    virtual void construct( const sc_fxval_fast& );
+    virtual void  destruct( const sc_fxval_fast& );
+    virtual void      read( const sc_fxval_fast& );
+    virtual void     write( const sc_fxval_fast& );
+
+    static sc_fxval_fast_observer* (*default_observer) ();
+
+};
+
+
+// IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
+
+// ----------------------------------------------------------------------------
+//  CLASS : sc_fxval_observer
+//
+//  Abstract base class for fixed-point value type observers;
+//  arbitrary precision.
+// ----------------------------------------------------------------------------
+
+inline
+void
+sc_fxval_observer::construct( const sc_fxval& )
+{}
+
+inline
+void
+sc_fxval_observer::destruct( const sc_fxval& )
+{}
+
+inline
+void
+sc_fxval_observer::read( const sc_fxval& )
+{}
+
+inline
+void
+sc_fxval_observer::write( const sc_fxval& )
+{}
+
+
+// ----------------------------------------------------------------------------
+//  CLASS : sc_fxval_fast_observer
+//
+//  Abstract base class for fixed-point value type observers;
+//  limited precision.
+// ----------------------------------------------------------------------------
+
+inline
+void
+sc_fxval_fast_observer::construct( const sc_fxval_fast& )
+{}
+
+inline
+void
+sc_fxval_fast_observer::destruct( const sc_fxval_fast& )
+{}
+
+inline
+void
+sc_fxval_fast_observer::read( const sc_fxval_fast& )
+{}
+
+inline
+void
+sc_fxval_fast_observer::write( const sc_fxval_fast& )
+{}
+
+} // namespace sc_dt
+
+
+#endif
+
+// Taf!