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2cad22a22a
** Add simulation context (VerilatedContext) to allow multiple fully independent
models to be in the same process. Please see the updated examples.
** Add context->time() and context->timeInc() API calls, to set simulation time.
These now are recommended in place of the legacy sc_time_stamp().
78 lines
1.9 KiB
C++
78 lines
1.9 KiB
C++
// DESCRIPTION: Verilator: --protect-lib example module
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//
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// This file ONLY is placed under the Creative Commons Public Domain, for
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// any use, without warranty, 2019 by Todd Strader.
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// SPDX-License-Identifier: CC0-1.0
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//======================================================================
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// See examples/tracing_c for notes on tracing
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// Include common routines
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#include <verilated.h>
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#include "Vtop.h"
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#if VM_TRACE
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#include <verilated_vcd_c.h>
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#endif
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int main(int argc, char** argv, char** env) {
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if (false && argc && argv && env) {}
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// Construct context to hold simulation time, etc
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VerilatedContext* contextp = new VerilatedContext;
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contextp->debug(0);
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contextp->randReset(2);
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contextp->commandArgs(argc, argv);
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// Construct the Verilated model, including the secret module
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Vtop* top = new Vtop{contextp};
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#if VM_TRACE
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// When tracing, the contents of the secret module will not be seen
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VerilatedVcdC* tfp = nullptr;
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const char* flag = contextp->commandArgsPlusMatch("trace");
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if (flag && 0 == strcmp(flag, "+trace")) {
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contextp->traceEverOn(true);
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VL_PRINTF("Enabling waves into logs/vlt_dump.vcd...\n");
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tfp = new VerilatedVcdC;
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top->trace(tfp, 99);
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Verilated::mkdir("logs");
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tfp->open("logs/vlt_dump.vcd");
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}
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#endif
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top->clk = 0;
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// Simulate until $finish
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while (!contextp->gotFinish()) {
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contextp->timeInc(1);
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top->clk = ~top->clk & 0x1;
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top->eval();
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#if VM_TRACE
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if (tfp) tfp->dump(contextp->time());
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#endif
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}
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// Final model cleanup
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top->final();
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// Close trace if opened
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#if VM_TRACE
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if (tfp) {
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tfp->close();
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tfp = nullptr;
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}
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#endif
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// Destroy model
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delete top;
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top = nullptr;
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delete contextp;
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contextp = nullptr;
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// Return good completion status
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// Don't use exit() or destructor won't get called
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return 0;
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}
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