fsmr.cpp revision 12855
112855Sgabeblack@google.com/***************************************************************************** 212855Sgabeblack@google.com 312855Sgabeblack@google.com Licensed to Accellera Systems Initiative Inc. (Accellera) under one or 412855Sgabeblack@google.com more contributor license agreements. See the NOTICE file distributed 512855Sgabeblack@google.com with this work for additional information regarding copyright ownership. 612855Sgabeblack@google.com Accellera licenses this file to you under the Apache License, Version 2.0 712855Sgabeblack@google.com (the "License"); you may not use this file except in compliance with the 812855Sgabeblack@google.com License. You may obtain a copy of the License at 912855Sgabeblack@google.com 1012855Sgabeblack@google.com http://www.apache.org/licenses/LICENSE-2.0 1112855Sgabeblack@google.com 1212855Sgabeblack@google.com Unless required by applicable law or agreed to in writing, software 1312855Sgabeblack@google.com distributed under the License is distributed on an "AS IS" BASIS, 1412855Sgabeblack@google.com WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 1512855Sgabeblack@google.com implied. See the License for the specific language governing 1612855Sgabeblack@google.com permissions and limitations under the License. 1712855Sgabeblack@google.com 1812855Sgabeblack@google.com *****************************************************************************/ 1912855Sgabeblack@google.com 2012855Sgabeblack@google.com/***************************************************************************** 2112855Sgabeblack@google.com 2212855Sgabeblack@google.com fsmr.cpp -- 2312855Sgabeblack@google.com 2412855Sgabeblack@google.com Original Author: Martin Janssen, Synopsys, Inc., 2002-02-15 2512855Sgabeblack@google.com 2612855Sgabeblack@google.com *****************************************************************************/ 2712855Sgabeblack@google.com 2812855Sgabeblack@google.com/***************************************************************************** 2912855Sgabeblack@google.com 3012855Sgabeblack@google.com MODIFICATION LOG - modifiers, enter your name, affiliation, date and 3112855Sgabeblack@google.com changes you are making here. 3212855Sgabeblack@google.com 3312855Sgabeblack@google.com Name, Affiliation, Date: 3412855Sgabeblack@google.com Description of Modification: 3512855Sgabeblack@google.com 3612855Sgabeblack@google.com *****************************************************************************/ 3712855Sgabeblack@google.com 3812855Sgabeblack@google.com/* File containing functionality of the FSM recognizer */ 3912855Sgabeblack@google.com 4012855Sgabeblack@google.com#include "fsmr.h" 4112855Sgabeblack@google.com 4212855Sgabeblack@google.comvoid fsm_recognizer::entry() 4312855Sgabeblack@google.com{ 4412855Sgabeblack@google.com char c; 4512855Sgabeblack@google.com int state = 0; 4612855Sgabeblack@google.com bool out; 4712855Sgabeblack@google.com 4812855Sgabeblack@google.com while (true) { 4912855Sgabeblack@google.com do { wait(); } while (data_ready != true); 5012855Sgabeblack@google.com c = input_char.read(); 5112855Sgabeblack@google.com cout << c << flush; 5212855Sgabeblack@google.com 5312855Sgabeblack@google.com switch(state) { 5412855Sgabeblack@google.com case 0: 5512855Sgabeblack@google.com if (c == pattern[0]) state = 1; 5612855Sgabeblack@google.com else state = 0; 5712855Sgabeblack@google.com out = false; 5812855Sgabeblack@google.com break; 5912855Sgabeblack@google.com case 1: 6012855Sgabeblack@google.com if (c == pattern[1]) state = 2; 6112855Sgabeblack@google.com else state = 0; 6212855Sgabeblack@google.com out = false; 6312855Sgabeblack@google.com break; 6412855Sgabeblack@google.com case 2: 6512855Sgabeblack@google.com if (c == pattern[2]) state = 3; 6612855Sgabeblack@google.com else state = 0; 6712855Sgabeblack@google.com out = false; 6812855Sgabeblack@google.com break; 6912855Sgabeblack@google.com case 3: 7012855Sgabeblack@google.com if (c == pattern[3]) out = true; 7112855Sgabeblack@google.com else out = false; 7212855Sgabeblack@google.com state = 0; 7312855Sgabeblack@google.com break; 7412855Sgabeblack@google.com default: 7512855Sgabeblack@google.com cout << "Error: FSM in bad state." << endl; 7612855Sgabeblack@google.com break; 7712855Sgabeblack@google.com } 7812855Sgabeblack@google.com 7912855Sgabeblack@google.com found.write(out); 8012855Sgabeblack@google.com wait(); // for writing the found signal 8112855Sgabeblack@google.com found.write(false); // reset the found signal 8212855Sgabeblack@google.com } 8312855Sgabeblack@google.com} 84