Add VSRTL VCD tracing enable setting

src/processorhandler.cpp

@@ -88,6 +88,23 @@ ProcessorHandler::ProcessorHandler() {
   m_currentProcessor->setMaxReverseCycles(
       RipesSettings::value(RIPES_SETTING_REWINDSTACKSIZE).toInt());
 
+  connect(RipesSettings::getObserver(RIPES_SETTING_VCD_TRACE),
+          &SettingObserver::modified, this, [=](const auto &enabled) {
+            m_currentProcessor->vcdTrace(
+                enabled.toBool(),
+                RipesSettings::value(RIPES_SETTING_VCD_TRACE_FILE).toString());
+          });
+
+  connect(RipesSettings::getObserver(RIPES_SETTING_VCD_TRACE_FILE),
+          &SettingObserver::modified, this, [=](const auto &file) {
+            m_currentProcessor->vcdTrace(
+                RipesSettings::value(RIPES_SETTING_VCD_TRACE).toBool(),
+                file.toString());
+          });
+
+  // Reset VCD trace status.
+  RipesSettings::getObserver(RIPES_SETTING_VCD_TRACE_FILE)->trigger();
+
   // Reset request handling
   connect(RipesSettings::getObserver(RIPES_GLOBALSIGNAL_REQRESET),
           &SettingObserver::modified, this, &ProcessorHandler::_reset);

src/processors/interface/ripesprocessor.h

@@ -262,6 +262,12 @@ class RipesProcessor {
    */
   virtual void resetProcessor() = 0;
 
+  /*
+   * @brief vcdTrace
+   * Enables VCD tracing of the processor model, if supported by the simulator.
+   */
+  virtual void vcdTrace(bool enable, const QString &filename){};
+
   /**
    * @brief clock
    * Clocks the processor.

src/processors/ripesvsrtlprocessor.h

@@ -30,6 +30,10 @@ class RipesVSRTLProcessor : public RipesProcessor, public vsrtl::core::Design {
 
   virtual void reverseProcessor() override { reverse(); }
 
+  virtual void vcdTrace(bool enable, const QString &filename) override {
+    vsrtl::core::Design::vcdTrace(enable, filename.toStdString());
+  }
+
   long long getInstructionsRetired() const override {
     return m_instructionsRetired;
   }

src/ripessettings.cpp

@@ -35,6 +35,8 @@ const std::map<QString, QVariant> s_defaultSettings = {
     {RIPES_SETTING_EDITORREGS, true},
     {RIPES_SETTING_EDITORCONSOLE, true},
     {RIPES_SETTING_EDITORSTAGEHIGHLIGHTING, true},
+    {RIPES_SETTING_VCD_TRACE_FILE, "ripes.vcd"},
+    {RIPES_SETTING_VCD_TRACE, false},
 
     {RIPES_SETTING_PIPEDIAGRAM_MAXCYCLES, 100},
     {RIPES_SETTING_CACHE_MAXCYCLES, 10000},

src/ripessettings.h

@@ -32,6 +32,8 @@ namespace Ripes {
 #define RIPES_SETTING_CACHE_MAXPOINTS ("cacheplot_maxpoints")
 #define RIPES_SETTING_CACHE_PRESETS ("cache_presets")
 #define RIPES_SETTING_PERIPHERAL_SETTINGS ("peripheral_settings")
+#define RIPES_SETTING_VCD_TRACE ("enable_vcd_trace")
+#define RIPES_SETTING_VCD_TRACE_FILE ("vcd_trace_file")
 
 // This is not really a setting, but instead a method to leverage the static
 // observer objects that are generated for a setting. Used for other objects to

src/settingsdialog.cpp

@@ -311,12 +311,22 @@ QWidget *SettingsDialog::createSimulatorPage() {
   appendToLayout({rewindLabel, rewindSpinbox}, pageLayout,
                  "Maximum cycles that the simulator is able to undo.");
 
+  // Setting: RIPES_SETTING_PERIPHERALS_START
   appendToLayout(createSettingsWidgets<HexSpinBox>(
                      RIPES_SETTING_PERIPHERALS_START, "I/O start address:"),
                  pageLayout,
                  "Start address in the address space where peripherals will be "
                  "allocated from, growing upwards");
 
+  // Setting: RIPES_SETTING_VCD_TRACE
+  auto [vcdEnableLabel, vcdEnable] = createSettingsWidgets<QCheckBox>(
+      RIPES_SETTING_VCD_TRACE, "Enable simulation VCD traces.");
+  auto [vcdTraceFileLabel, vcdTraceFile] = createSettingsWidgets<QLineEdit>(
+      RIPES_SETTING_VCD_TRACE_FILE, "VCD trace file:");
+
+  appendToLayout({vcdEnableLabel, vcdEnable}, pageLayout);
+  appendToLayout({vcdTraceFileLabel, vcdTraceFile}, pageLayout);
+
   return pageWidget;
 }