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>

2 files changed, 185 insertions, 0 deletions

diff --git a/ext/systemc/src/tlm_core/tlm_1/tlm_req_rsp/tlm_ports/tlm_event_finder.h b/ext/systemc/src/tlm_core/tlm_1/tlm_req_rsp/tlm_ports/tlm_event_finder.h
new file mode 100644
index 000000000..60874ce91
--- /dev/null
+++ b/ext/systemc/src/tlm_core/tlm_1/tlm_req_rsp/tlm_ports/tlm_event_finder.h
@@ -0,0 +1,94 @@
+/*****************************************************************************
+
+  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.
+
+ *****************************************************************************/
+
+#ifndef __TLM_EVENT_FINDER_H__
+#define __TLM_EVENT_FINDER_H__
+
+//#include <systemc>
+
+#include "tlm_core/tlm_1/tlm_req_rsp/tlm_1_interfaces/tlm_tag.h"
+
+namespace tlm {
+
+template <class IF , class T>
+class tlm_event_finder_t
+: public sc_core::sc_event_finder
+{
+public:
+
+    // constructor
+
+    tlm_event_finder_t( const sc_core::sc_port_base& port_,
+                        const sc_core::sc_event& (IF::*event_method_) ( tlm_tag<T> * ) const )
+        : sc_core::sc_event_finder( port_ ), m_event_method( event_method_ )
+        {}
+
+    // destructor (does nothing)
+
+    virtual ~tlm_event_finder_t()
+        {}
+#if !(defined SYSTEMC_VERSION & SYSTEMC_VERSION <= 20050714)
+    virtual const sc_core::sc_event& find_event( sc_core::sc_interface* if_p = 0 ) const;
+#else
+    virtual const sc_core::sc_event& find_event() const;
+#endif
+
+private:
+
+    const sc_core::sc_event& (IF::*m_event_method) ( tlm_tag<T> * ) const;
+
+private:
+
+    // disabled
+    tlm_event_finder_t();
+    tlm_event_finder_t( const tlm_event_finder_t<IF,T>& );
+    tlm_event_finder_t<IF,T>& operator = ( const tlm_event_finder_t<IF,T>& );
+};
+
+
+#if !(defined SYSTEMC_VERSION & SYSTEMC_VERSION <= 20050714)
+template <class IF , class T>
+inline
+const sc_core::sc_event&
+tlm_event_finder_t<IF,T>::find_event( sc_core::sc_interface* if_p ) const
+{
+    const IF* iface = ( if_p ) ? dynamic_cast<const IF*>( if_p ) :
+                                 dynamic_cast<const IF*>( port().get_interface() );
+    if( iface == 0 ) {
+  report_error( sc_core::SC_ID_FIND_EVENT_, "port is not bound" );
+    }
+    return (const_cast<IF*>( iface )->*m_event_method) ( 0 );
+}
+#else
+template <class IF , class T>
+inline
+const sc_core::sc_event&
+tlm_event_finder_t<IF,T>::find_event() const
+{
+    const IF* iface = dynamic_cast<const IF*>( port().get_interface() );
+    if( iface == 0 ) {
+  report_error( sc_core::SC_ID_FIND_EVENT_, "port is not bound" );
+    }
+    return (const_cast<IF*>( iface )->*m_event_method) ( 0 );
+}
+#endif
+
+} // namespace tlm
+
+#endif
diff --git a/ext/systemc/src/tlm_core/tlm_1/tlm_req_rsp/tlm_ports/tlm_nonblocking_port.h b/ext/systemc/src/tlm_core/tlm_1/tlm_req_rsp/tlm_ports/tlm_nonblocking_port.h
new file mode 100644
index 000000000..0af1e3487
--- /dev/null
+++ b/ext/systemc/src/tlm_core/tlm_1/tlm_req_rsp/tlm_ports/tlm_nonblocking_port.h
@@ -0,0 +1,91 @@
+/*****************************************************************************
+
+  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.
+
+ *****************************************************************************/
+
+#ifndef __TLM_NONBLOCKING_PORT_H__
+#define __TLM_NONBLOCKING_PORT_H__
+
+#include "tlm_core/tlm_1/tlm_req_rsp/tlm_1_interfaces/tlm_core_ifs.h"
+#include "tlm_core/tlm_1/tlm_req_rsp/tlm_ports/tlm_event_finder.h"
+
+namespace tlm {
+
+template < typename T >
+class tlm_nonblocking_get_port :
+public sc_core::sc_port< tlm_nonblocking_get_if< T > , 1 >
+{
+public:
+  typedef tlm_nonblocking_get_if<T> get_if_type;
+
+  tlm_nonblocking_get_port( const char *port_name ) :
+    sc_core::sc_port< tlm_nonblocking_get_if< T > , 1 >( port_name ) {}
+
+  sc_core::sc_event_finder& ok_to_get() const {
+
+    return *new tlm_event_finder_t< get_if_type , T >(
+       *this,
+       &get_if_type::ok_to_get );
+
+  }
+
+};
+
+template < typename T >
+class tlm_nonblocking_peek_port :
+public sc_core::sc_port< tlm_nonblocking_peek_if< T > , 1 >
+{
+public:
+  typedef tlm_nonblocking_peek_if<T> peek_if_type;
+
+  tlm_nonblocking_peek_port( const char *port_name ) :
+    sc_core::sc_port< tlm_nonblocking_peek_if< T > , 1 >( port_name ) {}
+
+  sc_core::sc_event_finder& ok_to_peek() const {
+
+    return *new tlm_event_finder_t< peek_if_type , T >(
+       *this,
+       &peek_if_type::ok_to_peek );
+
+  }
+
+};
+
+
+template < typename T >
+class tlm_nonblocking_put_port :
+public sc_core::sc_port< tlm_nonblocking_put_if< T > , 1 >
+{
+public:
+  typedef tlm_nonblocking_put_if<T> put_if_type;
+
+  tlm_nonblocking_put_port( const char *port_name ) :
+    sc_core::sc_port< tlm_nonblocking_put_if< T > , 1 >( port_name ) {}
+
+  sc_core::sc_event_finder& ok_to_put() const {
+
+    return *new tlm_event_finder_t< put_if_type , T >(
+             *this,
+       &put_if_type::ok_to_put );
+
+  }
+
+};
+
+} // namespace tlm
+
+#endif