| /***************************************************************************** |
| |
| 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. |
| |
| *****************************************************************************/ |
| |
| /***************************************************************************** |
| |
| gcd.cpp -- |
| |
| Original Author: Martin Janssen, Synopsys, Inc., 2002-02-15 |
| |
| *****************************************************************************/ |
| |
| /***************************************************************************** |
| |
| MODIFICATION LOG - modifiers, enter your name, affiliation, date and |
| changes you are making here. |
| |
| Name, Affiliation, Date: |
| Description of Modification: |
| |
| *****************************************************************************/ |
| |
| #include "systemc.h" |
| |
| SC_MODULE( gcd_cc ) |
| { |
| SC_HAS_PROCESS( gcd_cc ); |
| |
| sc_in_clk clk; |
| |
| const sc_signal<bool>& reset; |
| const sc_signal<unsigned>& a; |
| const sc_signal<unsigned>& b; |
| sc_signal<unsigned>& c; |
| sc_signal<bool>& ready; |
| |
| gcd_cc( sc_module_name NAME, |
| sc_clock& CLK, |
| const sc_signal<bool>& RESET, |
| const sc_signal<unsigned>& A, |
| const sc_signal<unsigned>& B, |
| sc_signal<unsigned>& C, |
| sc_signal<bool>& READY ) |
| : |
| reset(RESET), |
| a(A), |
| b(B), |
| c(C), |
| ready(READY) |
| { |
| clk( CLK ); |
| SC_CTHREAD( entry, clk.pos() ); |
| reset_signal_is(reset,true); |
| } |
| |
| void entry(); |
| }; |
| |
| void |
| gcd_cc::entry() |
| { |
| unsigned tmp_a; |
| wait(); // Note that this wait() is required, otherwise, |
| // the reset is wrong! This is a problem with BC, |
| // not our frontend. |
| |
| while (true) { |
| unsigned tmp_b; |
| |
| c = tmp_a; |
| ready = true; |
| wait(); |
| |
| tmp_a = a; |
| tmp_b = b; |
| ready = false; |
| wait(); |
| |
| while (tmp_b != 0) { |
| |
| unsigned tmp_c = tmp_a; |
| tmp_a = tmp_b; |
| wait(); |
| |
| while (tmp_c >= tmp_b) { |
| tmp_c = tmp_c - tmp_b; |
| wait(); |
| } |
| |
| tmp_b = tmp_c; |
| wait(); |
| } |
| } |
| } |
| |
| int sc_main(int argc, char* argv[] ) |
| { |
| return 0; |
| } |