arm64: fix crash with HLE bios. Set nav bar to tranparent (android 10)

arm64 dynarec main loop and handlers were generated twice
Fix nav bar background leftover on android 10

core/hw/sh4/dyna/blockmanager.cpp

@@ -234,7 +234,6 @@ void bm_vmem_pagefill(void** ptr, u32 size_bytes)
 
 void bm_Reset()
 {
-	bm_ResetCache();
 	bm_CleanupDeletedBlocks();
 	protected_blocks = 0;
 	unprotected_blocks = 0;

core/hw/sh4/dyna/driver.cpp

@@ -405,7 +405,6 @@ static void recSh4_Reset(bool hard)
 {
 	Sh4_int_Reset(hard);
 	recSh4_ClearCache();
-	bm_Reset();
 }
 
 static void recSh4_Init()

core/rec-ARM64/rec_arm64.cpp

@@ -1257,9 +1257,7 @@ class Arm64Assembler : public MacroAssembler
 			if (!mmu_enabled())
 			{
 				// TODO Call no_update instead (and check CpuRunning less frequently?)
-				Mov(x2, sizeof(Sh4RCB));
-				Sub(x2, x28, x2);
-				Add(x2, x2, sizeof(Sh4Context));		// x2 now points to FPCB
+				Sub(x2, x28, offsetof(Sh4RCB, cntx));
 #if RAM_SIZE_MAX == 33554432
 				Ubfx(w1, w29, 1, 24);
 #else
@@ -1347,6 +1345,7 @@ class Arm64Assembler : public MacroAssembler
 
 		// int intc_sched()
 		arm64_intc_sched = GetCursorAddress<DynaCode *>();
+		verify((void *)arm64_intc_sched == (void *)CodeCache);
 		B(&intc_sched);
 
 		// void no_update()
@@ -2239,14 +2238,14 @@ bool ngen_Rewrite(host_context_t &context, void *faultAddress)
 
 static void generate_mainloop()
 {
-	if (mainloop != NULL)
+	if (mainloop != nullptr)
 		return;
 	compiler = new Arm64Assembler();
 
 	compiler->GenMainloop();
 
 	delete compiler;
-	compiler = NULL;
+	compiler = nullptr;
 }
 
 RuntimeBlockInfo* ngen_AllocateBlock()

shell/android-studio/reicast/src/main/java/com/reicast/emulator/BaseGLActivity.java

@@ -22,6 +22,7 @@
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewConfiguration;
+import android.view.Window;
 
 import com.reicast.emulator.config.Config;
 import com.reicast.emulator.debug.GenerateLogs;
@@ -37,6 +38,10 @@
 
 import tv.ouya.console.api.OuyaController;
 
+import static android.view.View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR;
+import static android.view.WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS;
+import static android.view.WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS;
+
 public abstract class BaseGLActivity extends Activity implements ActivityCompat.OnRequestPermissionsResultCallback {
     private static final int STORAGE_PERM_REQUEST = 1001;
     private static final int AUDIO_PERM_REQUEST = 1002;
@@ -57,6 +62,15 @@ public abstract class BaseGLActivity extends Activity implements ActivityCompat.
     protected void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+            // Set the navigation bar color to 0 to avoid left over when it fades out on Android 10
+            Window window = getWindow();
+            window.addFlags(FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
+            window.clearFlags(FLAG_TRANSLUCENT_STATUS);
+            window.setNavigationBarColor(0);
+            window.getDecorView().setSystemUiVisibility(SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);
+        }
+
         if (!getFilesDir().exists()) {
             getFilesDir().mkdir();
         }