168 lines
4.3 KiB
C++
168 lines
4.3 KiB
C++
#ifndef __arith_H
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#define __arith_H
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/*
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* Copyright (c) 2001-2010 Stephen Williams (steve@icarus.com)
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*
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* This source code is free software; you can redistribute it
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* and/or modify it in source code form under the terms of the GNU
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* General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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# include "functor.h"
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// base class for arithmetic functors
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class vvp_arith_ : public functor_s {
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public:
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explicit vvp_arith_(unsigned wid) : wid_(wid) {};
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protected:
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unsigned wid_;
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protected:
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void output_x_(vvp_ipoint_t base, bool push, unsigned val = 2);
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void output_val_(vvp_ipoint_t base, bool push, unsigned long sum);
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};
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// base class for wide arithmetic functors
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class vvp_wide_arith_ : public vvp_arith_ {
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public:
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explicit vvp_wide_arith_(unsigned wid);
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protected:
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static const unsigned pagesize = 8*sizeof(unsigned long);
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unsigned pagecount_;
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unsigned long *sum_;
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void output_val_(vvp_ipoint_t base, bool push);
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};
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/*
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* This class is functor for arithmetic sum. Inputs that come
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* in cause the 4-input summation to be calculated, and output
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* functors that are affected cause propagations.
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*/
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class vvp_arith_mult : public vvp_arith_ {
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public:
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explicit vvp_arith_mult(unsigned wid) : vvp_arith_(wid) {}
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void set(vvp_ipoint_t i, bool push, unsigned val, unsigned str);
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void wide(vvp_ipoint_t base, bool push);
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};
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class vvp_arith_div : public vvp_arith_ {
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public:
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explicit vvp_arith_div(unsigned wid, bool signed_flag)
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: vvp_arith_(wid), signed_flag_(signed_flag) {}
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void set(vvp_ipoint_t i, bool push, unsigned val, unsigned str);
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void wide(vvp_ipoint_t base, bool push);
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private:
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bool signed_flag_;
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};
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class vvp_arith_mod : public vvp_arith_ {
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public:
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explicit vvp_arith_mod(unsigned wid) : vvp_arith_(wid) {}
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void set(vvp_ipoint_t i, bool push, unsigned val, unsigned str);
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void wide(vvp_ipoint_t base, bool push);
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};
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class vvp_arith_sum : public vvp_wide_arith_ {
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public:
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explicit vvp_arith_sum(unsigned wid) : vvp_wide_arith_(wid) {}
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void set(vvp_ipoint_t i, bool push, unsigned val, unsigned str);
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};
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class vvp_arith_sub : public vvp_wide_arith_ {
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public:
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explicit vvp_arith_sub(unsigned wid) : vvp_wide_arith_(wid) {}
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void set(vvp_ipoint_t i, bool push, unsigned val, unsigned str);
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};
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class vvp_cmp_eq : public vvp_arith_ {
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public:
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explicit vvp_cmp_eq(unsigned wid);
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void set(vvp_ipoint_t i, bool push, unsigned val, unsigned str);
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};
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class vvp_cmp_ne : public vvp_arith_ {
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public:
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explicit vvp_cmp_ne(unsigned wid);
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void set(vvp_ipoint_t i, bool push, unsigned val, unsigned str);
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};
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class vvp_cmp_gtge_base_ : public vvp_arith_ {
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public:
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explicit vvp_cmp_gtge_base_(unsigned wid, bool signed_flag);
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protected:
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void set_base(vvp_ipoint_t i, bool push, unsigned val, unsigned str,
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unsigned out_if_equal);
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private:
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bool signed_flag_;
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};
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class vvp_cmp_ge : public vvp_cmp_gtge_base_ {
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public:
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explicit vvp_cmp_ge(unsigned wid, bool signed_flag);
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void set(vvp_ipoint_t i, bool push, unsigned val, unsigned str);
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private:
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};
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class vvp_cmp_gt : public vvp_cmp_gtge_base_ {
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public:
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explicit vvp_cmp_gt(unsigned wid, bool signed_flag);
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void set(vvp_ipoint_t i, bool push, unsigned val, unsigned str);
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private:
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};
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class vvp_shiftl : public vvp_arith_ {
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public:
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explicit vvp_shiftl(unsigned wid) : vvp_arith_(wid) {}
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void set(vvp_ipoint_t i, bool push, unsigned val, unsigned str);
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};
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class vvp_shiftr : public vvp_arith_ {
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public:
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explicit vvp_shiftr(unsigned wid) : vvp_arith_(wid) {}
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void set(vvp_ipoint_t i, bool push, unsigned val, unsigned str);
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};
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#endif
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