citra-qt: Replace OnCpuStepped signal by new signals DebugModeEntered and DebugModeLeft

src/citra_qt/bootmanager.cpp

@@ -40,18 +40,35 @@ void EmuThread::SetFilename(std::string filename)
 void EmuThread::run()
 {
     stop_run = false;
+
+    // holds whether the cpu was running during the last iteration,
+    // so that the DebugModeLeft signal can be emitted before the
+    // next execution step
+    bool was_active = false;
     while (!stop_run)
     {
         if (cpu_running)
         {
+            if (!was_active)
+                emit DebugModeLeft();
+
             Core::RunLoop();
+
+            was_active = cpu_running || exec_cpu_step;
+            if (!was_active)
+                emit DebugModeEntered();
         }
         else if (exec_cpu_step)
         {
+            if (!was_active)
+                emit DebugModeLeft();
+
             exec_cpu_step = false;
             Core::SingleStep();
-            emit CPUStepped();
+            emit DebugModeEntered();
             yieldCurrentThread();
+            
+            was_active = false;
         }
     }
     render_window->moveContext();

src/citra_qt/bootmanager.h

@@ -81,12 +81,18 @@ private:
 
 signals:
     /**
-     * Emitted when CPU when we've finished processing a single Gekko instruction
+     * Emitted when the CPU has halted execution
      *
-     * @warning This will only be emitted when the CPU is not running (SetCpuRunning(false))
      * @warning When connecting to this signal from other threads, make sure to specify either Qt::QueuedConnection (invoke slot within the destination object's message thread) or even Qt::BlockingQueuedConnection (additionally block source thread until slot returns)
      */
-    void CPUStepped();
+    void DebugModeEntered();
+    
+    /**
+     * Emitted right before the CPU continues execution
+     *
+     * @warning When connecting to this signal from other threads, make sure to specify either Qt::QueuedConnection (invoke slot within the destination object's message thread) or even Qt::BlockingQueuedConnection (additionally block source thread until slot returns)
+     */
+    void DebugModeLeft();
 };
 
 class GRenderWindow : public QWidget, public EmuWindow

src/citra_qt/debugger/callstack.cpp

@@ -25,7 +25,7 @@ CallstackWidget::CallstackWidget(QWidget* parent): QDockWidget(parent)
     ui.treeView->setModel(callstack_model);
 }
 
-void CallstackWidget::OnCPUStepped()
+void CallstackWidget::OnDebugModeEntered()
 {
     ARM_Disasm* disasm = new ARM_Disasm();
     ARM_Interface* app_core = Core::g_app_core;
@@ -68,3 +68,8 @@ void CallstackWidget::OnCPUStepped()
         }
     }
 }
+
+void CallstackWidget::OnDebugModeLeft()
+{
+
+}

src/citra_qt/debugger/callstack.h

@@ -15,7 +15,8 @@ public:
     CallstackWidget(QWidget* parent = 0);
 
 public slots:
-    void OnCPUStepped();
+    void OnDebugModeEntered();
+    void OnDebugModeLeft();
 
 private:
     Ui::CallStack ui;

src/citra_qt/debugger/disassembler.cpp

@@ -234,7 +234,7 @@ void DisassemblerWidget::OnToggleStartStop()
     emu_thread.SetCpuRunning(!emu_thread.IsCpuRunning());
 }
 
-void DisassemblerWidget::OnCPUStepped()
+void DisassemblerWidget::OnDebugModeEntered()
 {
     ARMword next_instr = Core::g_app_core->GetPC();
 
@@ -251,6 +251,11 @@ void DisassemblerWidget::OnCPUStepped()
     disasm_ui.treeView->selectionModel()->setCurrentIndex(model_index, QItemSelectionModel::SelectCurrent | QItemSelectionModel::Rows);
 }
 
+void DisassemblerWidget::OnDebugModeLeft()
+{
+
+}
+
 int DisassemblerWidget::SelectedRow()
 {
     QModelIndex index = disasm_ui.treeView->selectionModel()->currentIndex();

src/citra_qt/debugger/disassembler.h

@@ -61,7 +61,8 @@ public slots:
     void OnPause();
     void OnToggleStartStop();
 
-    void OnCPUStepped();
+    void OnDebugModeEntered();
+    void OnDebugModeLeft();
 
 private:
     // returns -1 if no row is selected

src/citra_qt/debugger/registers.cpp

@@ -41,7 +41,7 @@ RegistersWidget::RegistersWidget(QWidget* parent) : QDockWidget(parent)
     CSPR->addChild(new QTreeWidgetItem(QStringList("N")));
 }
 
-void RegistersWidget::OnCPUStepped()
+void RegistersWidget::OnDebugModeEntered()
 {
     ARM_Interface* app_core = Core::g_app_core;
 
@@ -65,3 +65,8 @@ void RegistersWidget::OnCPUStepped()
     CSPR->child(13)->setText(1, QString("%1").arg((app_core->GetCPSR() >> 30) & 0x1));  // Z - Zero
     CSPR->child(14)->setText(1, QString("%1").arg((app_core->GetCPSR() >> 31) & 0x1));  // N - Negative/Less than
 }
+
+void RegistersWidget::OnDebugModeLeft()
+{
+
+}

src/citra_qt/debugger/registers.h

@@ -17,7 +17,8 @@ public:
     RegistersWidget(QWidget* parent = NULL);
 
 public slots:
-    void OnCPUStepped();
+    void OnDebugModeEntered();
+    void OnDebugModeLeft();
 
 private:
     Ui::ARMRegisters cpu_regs_ui;

src/citra_qt/main.cpp

@@ -124,9 +124,13 @@ GMainWindow::GMainWindow()
     connect(ui.action_Hotkeys, SIGNAL(triggered()), this, SLOT(OnOpenHotkeysDialog()));
 
     // BlockingQueuedConnection is important here, it makes sure we've finished refreshing our views before the CPU continues
-    connect(&render_window->GetEmuThread(), SIGNAL(CPUStepped()), disasmWidget, SLOT(OnCPUStepped()), Qt::BlockingQueuedConnection);
-    connect(&render_window->GetEmuThread(), SIGNAL(CPUStepped()), registersWidget, SLOT(OnCPUStepped()), Qt::BlockingQueuedConnection);
-    connect(&render_window->GetEmuThread(), SIGNAL(CPUStepped()), callstackWidget, SLOT(OnCPUStepped()), Qt::BlockingQueuedConnection);
+    connect(&render_window->GetEmuThread(), SIGNAL(DebugModeEntered()), disasmWidget, SLOT(OnDebugModeEntered()), Qt::BlockingQueuedConnection);
+    connect(&render_window->GetEmuThread(), SIGNAL(DebugModeEntered()), registersWidget, SLOT(OnDebugModeEntered()), Qt::BlockingQueuedConnection);
+    connect(&render_window->GetEmuThread(), SIGNAL(DebugModeEntered()), callstackWidget, SLOT(OnDebugModeEntered()), Qt::BlockingQueuedConnection);
+    
+    connect(&render_window->GetEmuThread(), SIGNAL(DebugModeLeft()), disasmWidget, SLOT(OnDebugModeLeft()), Qt::BlockingQueuedConnection);
+    connect(&render_window->GetEmuThread(), SIGNAL(DebugModeLeft()), registersWidget, SLOT(OnDebugModeLeft()), Qt::BlockingQueuedConnection);
+    connect(&render_window->GetEmuThread(), SIGNAL(DebugModeLeft()), callstackWidget, SLOT(OnDebugModeLeft()), Qt::BlockingQueuedConnection);
 
     // Setup hotkeys
     RegisterHotkey("Main Window", "Load File", QKeySequence::Open);
@@ -167,8 +171,8 @@ void GMainWindow::BootGame(std::string filename)
     }
 
     disasmWidget->Init();
-    registersWidget->OnCPUStepped();
-    callstackWidget->OnCPUStepped();
+    registersWidget->OnDebugModeEntered();
+    callstackWidget->OnDebugModeEntered();
 
     render_window->GetEmuThread().SetFilename(filename);
     render_window->GetEmuThread().start();