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, 82 insertions, 0 deletions

diff --git a/ext/systemc/src/sysc/kernel/sc_constants.h b/ext/systemc/src/sysc/kernel/sc_constants.h
new file mode 100644
index 000000000..1ff20adbd
--- /dev/null
+++ b/ext/systemc/src/sysc/kernel/sc_constants.h
@@ -0,0 +1,82 @@
+/*****************************************************************************
+
+  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_constants.h -- Default constants whose values may need to be
+                    changed depending on the application.
+
+  Original Author: Ali Dasdan, Synopsys, Inc.
+
+  CHANGE LOG AT THE END OF THE FILE
+ *****************************************************************************/
+
+#ifndef SC_CONSTANTS_H
+#define SC_CONSTANTS_H
+
+namespace sc_core {
+
+// Maximum number of bits for arbitrary precision arithmetic. If
+// defined, the arithmetic becomes faster. If not defined, the
+// arithmetic becomes slower and the precision becomes infinite.  It
+// is a good idea to define this constant as a multiple of
+// BITS_PER_DIGIT, which is defined in numeric_bit/sc_nbdefs.h.
+//#define SC_MAX_NBITS    510    // 17 * BITS_PER_DIGIT
+
+
+// deprecated in 1666-2005 and later, but kept for backwards compatibility
+//  - can be set by defining SC_OVERRIDE_DEFAULT_STACK_SIZE
+//  - defaults defined in sc_thread_process.cpp
+extern const int SC_DEFAULT_STACK_SIZE;
+
+
+#ifdef DEBUG_SYSTEMC
+const int SC_MAX_NUM_DELTA_CYCLES = 10000;
+#endif
+
+} // namespace sc_core
+
+// $Log: sc_constants.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  2011/02/18 20:33:26  acg
+//  Philipp A. Hartmann: added default stack size for CYGWIN32.
+//
+// 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  2010/03/15 18:29:25  acg
+//  Andy Goodrich: Changed the default stack size to 128K from 64K.
+//
+// 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