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Diffstat (limited to 'src/systemc/tests/systemc/misc/sim_tests/popc/popc.cpp')
| -rw-r--r-- | src/systemc/tests/systemc/misc/sim_tests/popc/popc.cpp | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/src/systemc/tests/systemc/misc/sim_tests/popc/popc.cpp b/src/systemc/tests/systemc/misc/sim_tests/popc/popc.cpp new file mode 100644 index 000000000..975b9728c --- /dev/null +++ b/src/systemc/tests/systemc/misc/sim_tests/popc/popc.cpp @@ -0,0 +1,237 @@ +/***************************************************************************** + + 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. + + *****************************************************************************/ + +/***************************************************************************** + + popc.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" + +/* + * Test bench + */ + +SC_MODULE( proc1 ) +{ + SC_HAS_PROCESS( proc1 ); + + sc_in_clk clk; + + // Inputs + sc_in<bool> data_ack; + sc_in<int> popc; + // Outputs + sc_out<bool> reset; + sc_out<bool> data_ready; + sc_out<int> in; + + // Constructor + proc1( sc_module_name NAME, + sc_clock& CLK, + sc_signal<bool>& DATA_ACK, + sc_signal<int>& POPC, + sc_signal<bool>& RESET, + sc_signal<bool>& DATA_READY, + sc_signal<int>& IN_ ) + { + clk(CLK); + data_ack(DATA_ACK); popc(POPC); + reset(RESET); data_ready(DATA_READY); in(IN_); + SC_CTHREAD( entry, clk.pos() ); + } + + // Process functionality goes here + void entry(); +}; + +/* + * popc - The process doing the population count + * + */ + +SC_MODULE( proc2 ) +{ + SC_HAS_PROCESS( proc2 ); + + sc_in_clk clk; + + // Inputs + sc_in<bool> reset; + sc_in<bool> data_ready; + sc_in<int> in; + // Outputs + sc_out<bool> data_ack; + sc_out<int> popc; + + // Internal variables + int c; + int t; + int no; + + proc2( sc_module_name NAME, + sc_clock& CLK, + sc_signal<bool>& RESET, + sc_signal<bool>& DATA_READY, + sc_signal<int>& IN_, + sc_signal<bool>& DATA_ACK, + sc_signal<int>& POPC ) + { + clk(CLK); + reset(RESET); + data_ready(DATA_READY); + in(IN_); + data_ack(DATA_ACK); + popc(POPC); + SC_CTHREAD( entry, clk.pos() ); + reset_signal_is(reset,true); + c = 0; + t = 0; + } + + // Process functionality + void entry(); +}; + + +/* + * Testbench functionality + */ + +void proc1::entry() +{ + int i; + int j; + + j = 1; + i = 0; + data_ready.write(false); + reset.write(false); + + wait(); + + while(true){ + in.write(j); + + data_ready.write(true); + do { wait(); } while (data_ack == false); + data_ready.write(false); + do { wait(); } while (data_ack == true); + + char buf[BUFSIZ]; + sprintf( buf, "Input: %7d Population Count: %3d", j, popc.read() ); + cout << buf << endl; + + i++; + + if( i == 3){ + reset.write(true); + wait(); + reset.write(false); + wait(2); + } + + if( i == 16) + sc_stop(); + + j = (j<<1)|1; + } +} + + +/* + * popc - functionality + */ + +void proc2::entry() +{ + // Reset behavior + no = 0; + data_ack.write(false); + + wait(); + + while (true) { + do { wait(); } while (data_ready == false); + + t = in.read(); + c = 0; + while( t ){ + c++; + t &= (t-1); + wait(); + } + + no++; + popc.write(c); + + data_ack.write(true); + do { wait(); } while (data_ready == true); + data_ack.write(false); + } +} + + +int +sc_main(int argc, char *argv[]) +{ + sc_signal<bool> data_ready("Ready"); + sc_signal<bool> data_ack("Ack"); + sc_signal<int> in; + sc_signal<int> popc; + sc_signal<bool> reset; + + sc_clock clock("CLOCK", 10, SC_NS, 0.5, 0.0, SC_NS); + + proc1 TestBench("TestBench", clock, data_ack, popc, reset, data_ready, in); + proc2 Popc("Popc", clock, reset, data_ready, in, data_ack, popc); + + + // Create trace file + sc_trace_file *tf = sc_create_vcd_trace_file("tracefile"); + // Trace signals + sc_trace(tf, data_ready, "data_ready"); + sc_trace(tf, data_ack, "data_ack"); + sc_trace(tf, in, "in"); + sc_trace(tf, popc, "popc"); + sc_trace(tf, reset, "reset"); + // sc_trace(tf, clock.signal(), "Clock"); + sc_trace(tf, clock, "Clock"); + // Trace internal variables + sc_trace(tf, Popc.t, "Popc.t"); + sc_trace(tf, Popc.c, "Popc.c"); + sc_trace(tf, Popc.no, "Popc.no"); + + sc_start(); + return 0; +} + |