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, 157 insertions, 0 deletions

diff --git a/ext/systemc/src/sysc/kernel/sc_cor.h b/ext/systemc/src/sysc/kernel/sc_cor.h
new file mode 100644
index 000000000..49892ca7a
--- /dev/null
+++ b/ext/systemc/src/sysc/kernel/sc_cor.h
@@ -0,0 +1,157 @@
+/*****************************************************************************
+
+  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_cor.h -- Coroutine abstract base classes.
+
+  Original Author: Martin Janssen, Synopsys, Inc., 2001-12-18
+
+  CHANGE LOG AT THE END OF THE FILE
+ *****************************************************************************/
+
+
+#ifndef SC_COR_H
+#define SC_COR_H
+
+
+#include <cassert>
+#include <cstdlib>
+
+namespace sc_core {
+
+class sc_simcontext;
+
+
+// ----------------------------------------------------------------------------
+//  TYPEDEF : sc_cor_fn
+//
+//  Function type for creating coroutines.
+// ----------------------------------------------------------------------------
+
+typedef void (sc_cor_fn)( void* );
+
+
+// ----------------------------------------------------------------------------
+//  CLASS : sc_cor
+//
+//  Coroutine abstract base class.
+// ----------------------------------------------------------------------------
+
+class sc_cor
+{
+protected:
+
+    // constructor
+    sc_cor() {}
+
+public:
+
+    // destructor
+    virtual ~sc_cor() {}
+
+    // switch stack protection on/off
+    virtual void stack_protect( bool /* enable */ ) {}
+
+private:
+
+    // disabled
+    sc_cor( const sc_cor& );
+    sc_cor& operator = ( const sc_cor& );
+};
+
+
+// ----------------------------------------------------------------------------
+//  CLASS : sc_cor_pkg
+//
+//  Coroutine package abstract base class.
+// ----------------------------------------------------------------------------
+
+class sc_cor_pkg
+{
+public:
+
+    // constructor
+    sc_cor_pkg( sc_simcontext* simc )
+        : m_simc( simc ) { assert( simc != 0 ); }
+
+    // destructor
+    virtual ~sc_cor_pkg() {}
+
+    // create a new coroutine
+   virtual sc_cor* create(
+	    std::size_t stack_size, sc_cor_fn* fn, void* arg ) = 0;
+
+    // yield to the next coroutine
+    virtual void yield( sc_cor* next_cor ) = 0;
+
+    // abort the current coroutine (and resume the next coroutine)
+    virtual void abort( sc_cor* next_cor ) = 0;
+
+    // get the main coroutine
+    virtual sc_cor* get_main() = 0;
+
+    // get the simulation context
+    sc_simcontext* simcontext()
+        { return m_simc; }
+
+private:
+
+    sc_simcontext* m_simc;
+
+private:
+
+    // disabled
+    sc_cor_pkg();
+    sc_cor_pkg( const sc_cor_pkg& );
+    sc_cor_pkg& operator = ( const sc_cor_pkg& );
+};
+
+} // namespace sc_core
+
+// $Log: sc_cor.h,v $
+// Revision 1.7  2011/08/26 20:46:09  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 1.6  2011/08/15 16:43:24  acg
+//  Torsten Maehne: changes to remove unused argument warnings.
+//
+// Revision 1.5  2011/02/18 20:27:14  acg
+//  Andy Goodrich: Updated Copyrights.
+//
+// Revision 1.4  2011/02/13 21:47:37  acg
+//  Andy Goodrich: update copyright notice.
+//
+// Revision 1.3  2011/01/19 23:21:49  acg
+//  Andy Goodrich: changes for IEEE 1666 2011
+//
+// Revision 1.2  2008/05/22 17:06:24  acg
+//  Andy Goodrich: updated copyright notice to include 2008.
+//
+// Revision 1.1.1.1  2006/12/15 20:20:05  acg
+// SystemC 2.3
+//
+// Revision 1.3  2006/01/13 18:44:29  acg
+// Added $Log to record CVS changes into the source.
+//
+
+#endif
+
+// Taf!