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Diffstat (limited to 'ext/systemc/src/sysc/communication/sc_signal_ifs.h')
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1 files changed, 305 insertions, 0 deletions
diff --git a/ext/systemc/src/sysc/communication/sc_signal_ifs.h b/ext/systemc/src/sysc/communication/sc_signal_ifs.h new file mode 100644 index 000000000..ad703aaa7 --- /dev/null +++ b/ext/systemc/src/sysc/communication/sc_signal_ifs.h @@ -0,0 +1,305 @@ +/***************************************************************************** + + 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_signal_ifs.h -- The sc_signal<T> interface classes. + + Original Author: Martin Janssen, Synopsys, Inc., 2001-05-21 + + CHANGE LOG IS AT THE END OF THE FILE + *****************************************************************************/ + +#ifndef SC_SIGNAL_IFS_H +#define SC_SIGNAL_IFS_H + + +#include "sysc/communication/sc_interface.h" +#include "sysc/communication/sc_writer_policy.h" + + +namespace sc_dt +{ + class sc_logic; +} + +namespace sc_core { + +class sc_signal_bool_deval; +class sc_signal_logic_deval; + + +// ---------------------------------------------------------------------------- +// CLASS : sc_signal_in_if<T> +// +// The sc_signal<T> input interface class. +// ---------------------------------------------------------------------------- + +template <class T> +class sc_signal_in_if +: virtual public sc_interface +{ +public: + + // get the value changed event + virtual const sc_event& value_changed_event() const = 0; + + + // read the current value + virtual const T& read() const = 0; + + // get a reference to the current value (for tracing) + virtual const T& get_data_ref() const = 0; + + + // was there a value changed event? + virtual bool event() const = 0; + +protected: + + // constructor + + sc_signal_in_if() + {} + +private: + + // disabled + sc_signal_in_if( const sc_signal_in_if<T>& ); + sc_signal_in_if<T>& operator = ( const sc_signal_in_if<T>& ); +}; + + +// ---------------------------------------------------------------------------- +// CLASS : sc_signal_in_if<bool> +// +// Specialization of sc_signal_in_if<T> for type bool. +// ---------------------------------------------------------------------------- + +class sc_reset; + +template <> +class sc_signal_in_if<bool> +: virtual public sc_interface +{ + friend class sc_reset; +public: + + // get the value changed event + virtual const sc_event& value_changed_event() const = 0; + + // get the positive edge event + virtual const sc_event& posedge_event() const = 0; + + // get the negative edge event + virtual const sc_event& negedge_event() const = 0; + + + // read the current value + virtual const bool& read() const = 0; + + // get a reference to the current value (for tracing) + virtual const bool& get_data_ref() const = 0; + + + // was there a value changed event? + virtual bool event() const = 0; + + // was there a positive edge event? + virtual bool posedge() const = 0; + + // was there a negative edge event? + virtual bool negedge() const = 0; + +protected: + + // constructor + + sc_signal_in_if() + {} + +private: + + // disabled + sc_signal_in_if( const sc_signal_in_if<bool>& ); + sc_signal_in_if<bool>& operator = ( const sc_signal_in_if<bool>& ); + + // designate this object as a reset signal + virtual sc_reset* is_reset() const + { return NULL; } +}; + + +// ---------------------------------------------------------------------------- +// CLASS : sc_signal_in_if<sc_dt::sc_logic> +// +// Specialization of sc_signal_in_if<T> for type sc_dt::sc_logic. +// ---------------------------------------------------------------------------- + +template <> +class sc_signal_in_if<sc_dt::sc_logic> +: virtual public sc_interface +{ +public: + + // get the value changed event + virtual const sc_event& value_changed_event() const = 0; + + // get the positive edge event + virtual const sc_event& posedge_event() const = 0; + + // get the negative edge event + virtual const sc_event& negedge_event() const = 0; + + + // read the current value + virtual const sc_dt::sc_logic& read() const = 0; + + // get a reference to the current value (for tracing) + virtual const sc_dt::sc_logic& get_data_ref() const = 0; + + + // was there a value changed event? + virtual bool event() const = 0; + + // was there a positive edge event? + virtual bool posedge() const = 0; + + // was there a negative edge event? + virtual bool negedge() const = 0; + + +protected: + + // constructor + + sc_signal_in_if() + {} + +private: + + // disabled + sc_signal_in_if( const sc_signal_in_if<sc_dt::sc_logic>& ); + sc_signal_in_if<sc_dt::sc_logic>& operator = ( + const sc_signal_in_if<sc_dt::sc_logic>& ); +}; + + +// ---------------------------------------------------------------------------- +// CLASS : sc_signal_write_if<T> +// +// The standard output interface class. +// ---------------------------------------------------------------------------- +template< typename T > +class sc_signal_write_if : public virtual sc_interface +{ +public: + sc_signal_write_if() {} + // write the new value + virtual void write( const T& ) = 0; + virtual sc_writer_policy get_writer_policy() const + { return SC_DEFAULT_WRITER_POLICY; } +private: + // disabled + sc_signal_write_if( const sc_signal_write_if<T>& ); + sc_signal_write_if<T>& operator = ( const sc_signal_write_if<T>& ); +}; + + +// ---------------------------------------------------------------------------- +// CLASS : sc_signal_inout_if<T> +// +// The sc_signal<T> input/output interface class. +// ---------------------------------------------------------------------------- + +template <class T> +class sc_signal_inout_if +: public sc_signal_in_if<T>, public sc_signal_write_if<T> +{ + +protected: + + // constructor + + sc_signal_inout_if() + {} + +private: + + // disabled + sc_signal_inout_if( const sc_signal_inout_if<T>& ); + sc_signal_inout_if<T>& operator = ( const sc_signal_inout_if<T>& ); +}; + + +// ---------------------------------------------------------------------------- +// CLASS : sc_signal_out_if<T> +// +// The sc_signal<T> output interface class. +// ---------------------------------------------------------------------------- + +// sc_signal_out_if can also be read from, hence no difference with +// sc_signal_inout_if. + +#define sc_signal_out_if sc_signal_inout_if + +} // namespace sc_core + +//$Log: sc_signal_ifs.h,v $ +//Revision 1.4 2011/08/26 20:45:43 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 2011/02/18 20:23:45 acg +// Andy Goodrich: Copyright update. +// +//Revision 1.2 2010/12/07 19:50:37 acg +// Andy Goodrich: addition of writer policies, courtesy of Philipp Hartmann. +// +//Revision 1.1.1.1 2006/12/15 20:20:04 acg +//SystemC 2.3 +// +//Revision 1.4 2006/08/29 23:35:00 acg +// Andy Goodrich: added bind_count() method to allow users to determine which +// ports are connected in before_end_of_elaboration(). +// +//Revision 1.3 2006/04/11 23:11:57 acg +// Andy Goodrich: Changes for reset support that only includes +// sc_cthread_process instances. +// +//Revision 1.2 2006/01/03 23:18:26 acg +//Changed copyright to include 2006. +// +//Revision 1.1.1.1 2005/12/19 23:16:43 acg +//First check in of SystemC 2.1 into its own archive. +// +//Revision 1.10 2005/09/15 23:01:51 acg +//Added std:: prefix to appropriate methods and types to get around +//issues with the Edison Front End. +// +//Revision 1.9 2005/06/29 18:12:12 acg +//Added $log. +// +//Revision 1.8 2005/06/10 22:43:55 acg +//Added CVS change log annotation. +// + +#endif + +// Taf! |