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, 124 insertions, 0 deletions

diff --git a/ext/systemc/src/sysc/communication/sc_mutex.h b/ext/systemc/src/sysc/communication/sc_mutex.h
new file mode 100644
index 000000000..e3cef36c3
--- /dev/null
+++ b/ext/systemc/src/sysc/communication/sc_mutex.h
@@ -0,0 +1,124 @@
+/*****************************************************************************
+
+  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_mutex.h -- The sc_mutex primitive channel class.
+
+  Original Author: Martin Janssen, Synopsys, Inc., 2001-05-21
+
+  CHANGE LOG IS AT THE END OF THE FILE
+ *****************************************************************************/
+
+#ifndef SC_MUTEX_H
+#define SC_MUTEX_H
+
+#include "sysc/kernel/sc_event.h"
+#include "sysc/kernel/sc_object.h"
+#include "sysc/kernel/sc_wait.h"
+#include "sysc/communication/sc_mutex_if.h"
+
+namespace sc_core {
+
+// ----------------------------------------------------------------------------
+//  CLASS : sc_mutex
+//
+//  The sc_mutex primitive channel class.
+// ----------------------------------------------------------------------------
+
+class sc_mutex
+: public sc_mutex_if,
+  public sc_object
+{
+public:
+
+    // constructors and destructor
+
+    sc_mutex();
+    explicit sc_mutex( const char* name_ );
+	virtual ~sc_mutex();
+
+
+    // interface methods
+
+    // blocks until mutex could be locked
+    virtual int lock();
+
+    // returns -1 if mutex could not be locked
+    virtual int trylock();
+
+    // returns -1 if mutex was not locked by caller
+    virtual int unlock();
+
+    virtual const char* kind() const
+        { return "sc_mutex"; }
+
+protected:
+
+    // support methods
+
+    bool in_use() const
+	{ return ( m_owner != 0 ); }
+
+protected:
+
+    sc_process_b* m_owner;
+    sc_event      m_free;
+
+private:
+
+    // disabled
+    sc_mutex( const sc_mutex& );
+    sc_mutex& operator = ( const sc_mutex& );
+};
+
+} // namespace sc_core
+
+//$Log: sc_mutex.h,v $
+//Revision 1.4  2011/08/26 20:45:41  acg
+// Andy Goodrich: moved the modification log to the end of the file to
+// eliminate source line number skew when check-ins are done.
+//
+//Revision 1.3  2011/02/18 20:23:45  acg
+// Andy Goodrich: Copyright update.
+//
+//Revision 1.2  2010/11/02 16:31:01  acg
+// Andy Goodrich: changed object derivation to use sc_object rather than
+// sc_prim_channel as the parent class.
+//
+//Revision 1.1.1.1  2006/12/15 20:20:04  acg
+//SystemC 2.3
+//
+//Revision 1.2  2006/01/03 23:18:26  acg
+//Changed copyright to include 2006.
+//
+//Revision 1.1.1.1  2005/12/19 23:16:43  acg
+//First check in of SystemC 2.1 into its own archive.
+//
+//Revision 1.10  2005/09/15 23:01:51  acg
+//Added std:: prefix to appropriate methods and types to get around
+//issues with the Edison Front End.
+//
+//Revision 1.9  2005/06/10 22:43:55  acg
+//Added CVS change log annotation.
+//
+
+#endif
+
+// Taf!