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Diffstat (limited to 'ext/systemc/src/sysc/datatypes/bit/sc_bv_base.h')
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1 files changed, 339 insertions, 0 deletions
diff --git a/ext/systemc/src/sysc/datatypes/bit/sc_bv_base.h b/ext/systemc/src/sysc/datatypes/bit/sc_bv_base.h new file mode 100644 index 000000000..279001da5 --- /dev/null +++ b/ext/systemc/src/sysc/datatypes/bit/sc_bv_base.h @@ -0,0 +1,339 @@ +/***************************************************************************** + + 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_bv_base.h -- Arbitrary size bit vector class. + + Original Author: Gene Bushuyev, Synopsys, Inc. + + *****************************************************************************/ + +/***************************************************************************** + + MODIFICATION LOG - modifiers, enter your name, affiliation, date and + changes you are making here. + + Name, Affiliation, Date: + Description of Modification: + + *****************************************************************************/ + +// $Log: sc_bv_base.h,v $ +// Revision 1.3 2011/08/26 22:32:00 acg +// Torsten Maehne: added parentheses to make opearator ordering more obvious. +// +// Revision 1.2 2011/08/15 16:43:24 acg +// Torsten Maehne: changes to remove unused argument warnings. +// +// Revision 1.1.1.1 2006/12/15 20:20:04 acg +// SystemC 2.3 +// +// Revision 1.3 2006/01/13 18:53:53 acg +// Andy Goodrich: added $Log command so that CVS comments are reproduced in +// the source. +// + +#ifndef SC_BV_BASE_H +#define SC_BV_BASE_H + + +#include "sysc/datatypes/bit/sc_bit_ids.h" +#include "sysc/datatypes/bit/sc_bit_proxies.h" +#include "sysc/datatypes/bit/sc_proxy.h" +#include "sysc/datatypes/int/sc_length_param.h" + + +namespace sc_dt +{ + +// classes defined in this module +class sc_bv_base; + + +// ---------------------------------------------------------------------------- +// CLASS : sc_bv_base +// +// Arbitrary size bit vector base class. +// ---------------------------------------------------------------------------- + +class sc_bv_base + : public sc_proxy<sc_bv_base> +{ + friend class sc_lv_base; + + + void init( int length_, bool init_value = false ); + + void assign_from_string( const std::string& ); + +public: + + // typedefs + + typedef sc_proxy<sc_bv_base> base_type; + + + // constructors + + explicit sc_bv_base( int length_ = sc_length_param().len() ) + : m_len( 0 ), m_size( 0 ), m_data( 0 ) + { init( length_ ); } + + explicit sc_bv_base( bool a, + int length_ = sc_length_param().len() ) + : m_len( 0 ), m_size( 0 ), m_data( 0 ) + { init( length_, a ); } + + sc_bv_base( const char* a ); + + sc_bv_base( const char* a, int length_ ); + + template <class X> + sc_bv_base( const sc_proxy<X>& a ) + : m_len( 0 ), m_size( 0 ), m_data( 0 ) + { init( a.back_cast().length() ); base_type::assign_( a ); } + + sc_bv_base( const sc_bv_base& a ); + +#ifdef SC_DT_DEPRECATED + + explicit sc_bv_base( const sc_unsigned& a ) + : m_len( 0 ), m_size( 0 ), m_data( 0 ) + { init( a.length() ); base_type::assign_( a ); } + + explicit sc_bv_base( const sc_signed& a ) + : m_len( 0 ), m_size( 0 ), m_data( 0 ) + { init( a.length() ); base_type::assign_( a ); } + + explicit sc_bv_base( const sc_uint_base& a) + : m_len( 0 ), m_size( 0 ), m_data( 0 ) + { init( a.length() ); base_type::assign_( a ); } + + explicit sc_bv_base( const sc_int_base& a) + : m_len( 0 ), m_size( 0 ), m_data( 0 ) + { init( a.length() ); base_type::assign_( a ); } + +#endif + + + // destructor + + virtual ~sc_bv_base() + { delete [] m_data; } + + + // assignment operators + + template <class X> + sc_bv_base& operator = ( const sc_proxy<X>& a ) + { assign_p_( *this, a ); return *this; } + + sc_bv_base& operator = ( const sc_bv_base& a ) + { assign_p_( *this, a ); return *this; } + + sc_bv_base& operator = ( const char* a ); + + sc_bv_base& operator = ( const bool* a ) + { base_type::assign_( a ); return *this; } + + sc_bv_base& operator = ( const sc_logic* a ) + { base_type::assign_( a ); return *this; } + + sc_bv_base& operator = ( const sc_unsigned& a ) + { base_type::assign_( a ); return *this; } + + sc_bv_base& operator = ( const sc_signed& a ) + { base_type::assign_( a ); return *this; } + + sc_bv_base& operator = ( const sc_uint_base& a ) + { base_type::assign_( a ); return *this; } + + sc_bv_base& operator = ( const sc_int_base& a ) + { base_type::assign_( a ); return *this; } + + sc_bv_base& operator = ( unsigned long a ) + { base_type::assign_( a ); return *this; } + + sc_bv_base& operator = ( long a ) + { base_type::assign_( a ); return *this; } + + sc_bv_base& operator = ( unsigned int a ) + { base_type::assign_( a ); return *this; } + + sc_bv_base& operator = ( int a ) + { base_type::assign_( a ); return *this; } + + sc_bv_base& operator = ( uint64 a ) + { base_type::assign_( a ); return *this; } + + sc_bv_base& operator = ( int64 a ) + { base_type::assign_( a ); return *this; } + + +#if 0 + + // bitwise complement + + sc_bv_base& b_not(); + + const sc_bv_base operator ~ () const + { sc_bv_base a( *this ); return a.b_not(); } + + + // bitwise left shift + + sc_bv_base& operator <<= ( int n ); + + const sc_bv_base operator << ( int n ) const + { sc_bv_base a( *this ); return ( a <<= n ); } + + + // bitwise right shift + + sc_bv_base& operator >>= ( int n ); + + const sc_bv_base operator >> ( int n ) const + { sc_bv_base a( *this ); return ( a >>= n ); } + + + // bitwise left rotate + + sc_bv_base& lrotate( int n ); + + + // bitwise right rotate + + sc_bv_base& rrotate( int n ); + +#endif + + + // common methods + + int length() const + { return m_len; } + + int size() const + { return m_size; } + + sc_logic_value_t get_bit( int i ) const; + void set_bit( int i, sc_logic_value_t value ); + + sc_digit get_word( int i ) const + { return m_data[i]; } + + void set_word( int i, sc_digit w ) + { m_data[i] = w; } + + sc_digit get_cword( int /*i*/ ) const + { return SC_DIGIT_ZERO; } + + void set_cword( int i, sc_digit w ); + + void clean_tail(); + + + // other methods + + bool is_01() const + { return true; } + +protected: + + int m_len; // length in bits + int m_size; // size of data array + sc_digit* m_data; // data array +}; + + +// IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII + +#if 0 + +// bitwise left rotate + +inline +const sc_bv_base +lrotate( const sc_bv_base& x, int n ) +{ + sc_bv_base a( x ); + return a.lrotate( n ); +} + + +// bitwise right rotate + +inline +const sc_bv_base +rrotate( const sc_bv_base& x, int n ) +{ + sc_bv_base a( x ); + return a.rrotate( n ); +} + +#endif + + +// common methods + +inline +sc_logic_value_t +sc_bv_base::get_bit( int i ) const +{ + int wi = i / SC_DIGIT_SIZE; + int bi = i % SC_DIGIT_SIZE; + return sc_logic_value_t( (m_data[wi] >> bi) & SC_DIGIT_ONE ); +} + +inline +void +sc_bv_base::set_bit( int i, sc_logic_value_t value ) +{ + int wi = i / SC_DIGIT_SIZE; + int bi = i % SC_DIGIT_SIZE; + sc_digit mask = SC_DIGIT_ONE << bi; + m_data[wi] |= mask; // set bit to 1 + m_data[wi] &= value << bi | ~mask; +} + + +inline +void +sc_bv_base::set_cword( int /*i*/, sc_digit w ) +{ + if( w ) { + SC_REPORT_WARNING( sc_core::SC_ID_SC_BV_CANNOT_CONTAIN_X_AND_Z_, 0 ); + } +} + + +inline +void +sc_bv_base::clean_tail() +{ + int wi = m_size - 1; + int bi = m_len % SC_DIGIT_SIZE; + if ( bi != 0 ) m_data[wi] &= ~SC_DIGIT_ZERO >> (SC_DIGIT_SIZE - bi); +} + +} // namespace sc_dt + + +#endif |