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, 414 insertions, 0 deletions

diff --git a/ext/systemc/src/sysc/kernel/sc_time.h b/ext/systemc/src/sysc/kernel/sc_time.h
new file mode 100644
index 000000000..af222dd0f
--- /dev/null
+++ b/ext/systemc/src/sysc/kernel/sc_time.h
@@ -0,0 +1,414 @@
+/*****************************************************************************
+
+  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_time.h -- The time class.
+
+  Original Author: Martin Janssen, Synopsys, Inc., 2001-05-21
+
+  CHANGE LOG AT THE END OF THE FILE
+ *****************************************************************************/
+
+
+#ifndef SC_TIME_H
+#define SC_TIME_H
+
+
+#include "sysc/datatypes/int/sc_nbdefs.h"
+#include "sysc/datatypes/fx/scfx_ieee.h"
+#include "sysc/utils/sc_iostream.h"
+
+namespace sc_core {
+
+class sc_simcontext;
+
+// friend operator declarations
+
+    const sc_time operator + ( const sc_time&, const sc_time& );
+    const sc_time operator - ( const sc_time&, const sc_time& );
+    const sc_time operator * ( const sc_time&, double );
+    const sc_time operator * ( double, const sc_time& );
+    const sc_time operator / ( const sc_time&, double );
+    double        operator / ( const sc_time&, const sc_time& );
+
+
+// ----------------------------------------------------------------------------
+//  ENUM : sc_time_unit
+//
+//  Enumeration of time units.
+// ----------------------------------------------------------------------------
+
+enum sc_time_unit
+{
+    SC_FS = 0,
+    SC_PS,
+    SC_NS,
+    SC_US,
+    SC_MS,
+    SC_SEC
+};
+
+
+// ----------------------------------------------------------------------------
+//  CLASS : sc_time
+//
+//  The time class.
+// ----------------------------------------------------------------------------
+
+class sc_time
+{
+public:
+
+    typedef sc_dt::uint64 value_type;
+
+    // constructors
+
+    sc_time();
+    sc_time( double, sc_time_unit );
+    sc_time( double, sc_time_unit, sc_simcontext* );
+    sc_time( const sc_time& );
+
+    static sc_time from_value( value_type );
+
+    // deprecated, use from_value(v)
+    sc_time( double, bool scale );
+    sc_time( value_type, bool scale );
+
+    // assignment operator
+
+    sc_time& operator = ( const sc_time& );
+
+
+    // conversion functions
+
+    value_type value() const;      // relative to the time resolution
+    double to_double() const;  // relative to the time resolution
+    double to_default_time_units() const;
+    double to_seconds() const;
+    const std::string to_string() const;
+
+
+    // relational operators
+
+    bool operator == ( const sc_time& ) const;
+    bool operator != ( const sc_time& ) const;
+    bool operator <  ( const sc_time& ) const;
+    bool operator <= ( const sc_time& ) const;
+    bool operator >  ( const sc_time& ) const;
+    bool operator >= ( const sc_time& ) const;
+
+
+    // arithmetic operators
+
+    sc_time& operator += ( const sc_time& );
+    sc_time& operator -= ( const sc_time& );
+
+    friend const sc_time operator + ( const sc_time&, const sc_time& );
+    friend const sc_time operator - ( const sc_time&, const sc_time& );
+
+    sc_time& operator *= ( double );
+    sc_time& operator /= ( double );
+    sc_time& operator %= ( const sc_time& );
+
+    friend const sc_time operator * ( const sc_time&, double );
+    friend const sc_time operator * ( double, const sc_time& );
+    friend const sc_time operator / ( const sc_time&, double );
+    friend double        operator / ( const sc_time&, const sc_time& );
+    friend const sc_time operator % ( const sc_time&, const sc_time& );
+
+
+    // print function
+
+    void print( ::std::ostream& os = std::cout ) const;
+
+private:
+
+    value_type m_value;
+};
+
+
+// print operator
+
+inline ::std::ostream& operator << ( ::std::ostream&, const sc_time& );
+
+
+// IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
+
+// constructors
+
+inline
+sc_time::sc_time()
+: m_value( 0 )
+{}
+
+inline
+sc_time::sc_time( const sc_time& t )
+: m_value( t.m_value )
+{}
+
+
+// assignment operator
+
+inline
+sc_time&
+sc_time::operator = ( const sc_time& t )
+{
+    m_value = t.m_value;
+    return *this;
+}
+
+
+// conversion functions
+
+inline
+sc_time::value_type
+sc_time::value() const  // relative to the time resolution
+{
+    return m_value;
+}
+
+
+inline
+double
+sc_time::to_double() const  // relative to the time resolution
+{
+    return sc_dt::uint64_to_double( m_value );
+}
+
+
+// relational operators
+
+inline
+bool
+sc_time::operator == ( const sc_time& t ) const
+{
+    return ( m_value == t.m_value );
+}
+
+inline
+bool
+sc_time::operator != ( const sc_time& t ) const
+{
+    return ( m_value != t.m_value );
+}
+
+inline
+bool
+sc_time::operator < ( const sc_time& t ) const
+{
+    return ( m_value < t.m_value );
+}
+
+inline
+bool
+sc_time::operator <= ( const sc_time& t ) const
+{
+    return ( m_value <= t.m_value );
+}
+
+inline
+bool
+sc_time::operator > ( const sc_time& t ) const
+{
+    return ( m_value > t.m_value );
+}
+
+inline
+bool
+sc_time::operator >= ( const sc_time& t ) const
+{
+    return ( m_value >= t.m_value );
+}
+
+
+// arithmetic operators
+
+inline
+sc_time&
+sc_time::operator += ( const sc_time& t )
+{
+    m_value += t.m_value;
+    return *this;
+}
+
+inline
+sc_time&
+sc_time::operator -= ( const sc_time& t )
+{
+    m_value -= t.m_value;
+    return *this;
+}
+
+
+inline
+const sc_time
+operator + ( const sc_time& t1, const sc_time& t2 )
+{
+    return sc_time( t1 ) += t2;
+}
+
+inline
+const sc_time
+operator - ( const sc_time& t1, const sc_time& t2 )
+{
+    return sc_time( t1 ) -= t2;
+}
+
+
+inline
+sc_time&
+sc_time::operator *= ( double d )
+{
+    // linux bug workaround; don't change next two lines
+    volatile double tmp = sc_dt::uint64_to_double( m_value ) * d + 0.5;
+    m_value = SCAST<sc_dt::int64>( tmp );
+    return *this;
+}
+
+inline
+sc_time&
+sc_time::operator /= ( double d )
+{
+    // linux bug workaround; don't change next two lines
+    volatile double tmp = sc_dt::uint64_to_double( m_value ) / d + 0.5;
+    m_value = SCAST<sc_dt::int64>( tmp );
+    return *this;
+}
+
+inline
+sc_time&
+sc_time::operator %= ( const sc_time& t )
+{
+    m_value %= t.m_value;
+    return *this;
+}
+
+inline
+const sc_time
+operator * ( const sc_time& t, double d )
+{
+    sc_time tmp( t );
+    return tmp *= d;
+}
+
+inline
+const sc_time
+operator * ( double d, const sc_time& t )
+{
+    sc_time tmp( t );
+    return tmp *= d;
+}
+
+inline
+const sc_time
+operator / ( const sc_time& t, double d )
+{
+    sc_time tmp( t );
+    return tmp /= d;
+}
+
+inline
+double
+operator / ( const sc_time& t1, const sc_time& t2 )
+{
+    return ( t1.to_double() / t2.to_double() );
+}
+
+inline
+const sc_time
+operator % ( const sc_time& t1, const sc_time& t2 )
+{
+    sc_time tmp(t1);
+    return tmp %= t2;
+}
+
+// print operator
+
+inline
+::std::ostream&
+operator << ( ::std::ostream& os, const sc_time& t )
+{
+    t.print( os );
+    return os;
+}
+
+
+// ----------------------------------------------------------------------------
+//  STRUCT : sc_time_params
+//
+//  Struct that holds the time resolution and default time unit.
+// ----------------------------------------------------------------------------
+
+struct sc_time_params
+{
+    double time_resolution;		// in femto seconds
+    bool   time_resolution_specified;
+    bool   time_resolution_fixed;
+
+    sc_time::value_type default_time_unit;		// in time resolution
+    bool                default_time_unit_specified;
+
+    sc_time_params();
+    ~sc_time_params();
+};
+
+
+// ----------------------------------------------------------------------------
+
+extern const sc_time SC_ZERO_TIME;
+
+
+// functions for accessing the time resolution and default time unit
+
+extern void    sc_set_time_resolution( double, sc_time_unit );
+extern sc_time sc_get_time_resolution();
+
+extern void    sc_set_default_time_unit( double, sc_time_unit );
+extern sc_time sc_get_default_time_unit();
+
+} // namespace sc_core
+
+#endif
+
+// $Log: sc_time.h,v $
+// Revision 1.5  2011/08/26 20:46:11  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 1.4  2011/02/18 20:27:14  acg
+//  Andy Goodrich: Updated Copyrights.
+//
+// Revision 1.3  2011/02/13 21:47:38  acg
+//  Andy Goodrich: update copyright notice.
+//
+// Revision 1.2  2008/05/22 17:06:27  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 1.4  2006/05/08 18:02:06  acg
+//  Andy Goodrich: added David Long's forward declarations for friend
+//   functions, methods, and operators to keep the Microsoft compiler happy.
+//
+// Revision 1.3  2006/01/13 18:44:30  acg
+// Added $Log to record CVS changes into the source.
+
+// Taf!