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, 142 insertions, 0 deletions

diff --git a/ext/systemc/src/sysc/kernel/sc_except.cpp b/ext/systemc/src/sysc/kernel/sc_except.cpp
new file mode 100644
index 000000000..2699f8daf
--- /dev/null
+++ b/ext/systemc/src/sysc/kernel/sc_except.cpp
@@ -0,0 +1,142 @@
+/*****************************************************************************
+
+  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_except.cpp -- kill/reset exception handling
+
+  Original Author: Philipp A. Hartmann, OFFIS
+
+ CHANGE LOG APPEARS AT THE END OF THE FILE
+ *****************************************************************************/
+
+#include "sysc/kernel/sc_cmnhdr.h"
+//
+#include "sysc/kernel/sc_except.h"
+#include "sysc/kernel/sc_process.h"
+//
+#include "sysc/utils/sc_report.h"
+
+namespace sc_core {
+
+sc_unwind_exception::sc_unwind_exception( sc_process_b* proc_p, bool is_reset )
+  : m_proc_p(proc_p), m_is_reset( is_reset )
+{
+  sc_assert( m_proc_p );
+  m_proc_p->start_unwinding();
+}
+
+bool
+sc_unwind_exception::active() const
+{
+  return m_proc_p && m_proc_p->is_unwinding();
+}
+
+void
+sc_unwind_exception::clear() const
+{
+  sc_assert( m_proc_p );
+  m_proc_p->clear_unwinding();
+}
+
+const char*
+sc_unwind_exception::what() const throw()
+{
+  return ( m_is_reset ) ? "RESET" : "KILL";
+}
+
+sc_unwind_exception::~sc_unwind_exception() throw()
+{
+  if( active() ) {
+      // can't throw an exception, since we're already throwing
+      // -> abort instead
+      SC_REPORT_FATAL( SC_ID_RETHROW_UNWINDING_, m_proc_p->name() );
+  }
+}
+
+// handle and translate uncaught exceptions here
+//
+// These exceptions can either escape from sc_main() directly,
+// indirectly from an SC_METHOD(), or are thrown from within
+// an SC_(C)THREAD()
+//
+// returns a pointer to a dynamically allocated sc_report object,
+// containing the caught message
+
+sc_report*
+sc_handle_exception()
+{
+    try {
+
+        // re-throw exception here
+        try { throw; }
+
+        catch( sc_report & ) // to be on the safe side
+        {
+            throw; // continue
+        }
+        catch( sc_unwind_exception const & )
+        {
+            sc_assert( false && "Unhandled kill/reset, should never happen" );
+        }
+        catch( std::exception const & x )
+        {
+            SC_REPORT_ERROR( SC_ID_SIMULATION_UNCAUGHT_EXCEPTION_, x.what() );
+        }
+        catch( char const * x )
+        {
+            SC_REPORT_ERROR( SC_ID_SIMULATION_UNCAUGHT_EXCEPTION_, x );
+        }
+        catch( ... )
+        {
+            SC_REPORT_ERROR( SC_ID_SIMULATION_UNCAUGHT_EXCEPTION_,
+                             "UNKNOWN EXCEPTION" );
+        }
+    }
+    // everything is an sc_report now
+    catch( sc_report & rpt )
+    {
+        sc_report* rpt_p = new sc_report;
+        rpt_p->swap( rpt );
+        return rpt_p;
+    }
+    return 0;
+}
+
+} // namespace sc_core
+
+// $Log: sc_except.cpp,v $
+// Revision 1.4  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 1.3  2011/05/09 04:07:48  acg
+//  Philipp A. Hartmann:
+//    (1) Restore hierarchy in all phase callbacks.
+//    (2) Ensure calls to before_end_of_elaboration.
+//
+// Revision 1.2  2011/02/13 21:47:37  acg
+//  Andy Goodrich: update copyright notice.
+//
+// Revision 1.1  2011/02/10 22:47:38  acg
+//  Andy Goodrich: first check in of Philipp A. Hartmann's new exception
+//  processing code.
+//
+
+// Taf!