Core: Refactor core to use only one function for execution.

Core: Cleaned up comment to be more readable.

Citra: Changed loop to be more readable.

src/citra/citra.cpp

@@ -31,7 +31,9 @@ int __cdecl main(int argc, char **argv) {
         return -1;
     }
 
+    while(true) {
         Core::RunLoop();
+    }
 
     delete emu_window;
 

src/core/core.cpp

@@ -6,6 +6,8 @@
 #include "common/log.h"
 #include "common/symbols.h"
 
+#include "video_core/video_core.h"
+
 #include "core/core.h"
 #include "core/mem_map.h"
 #include "core/hw/hw.h"
@@ -24,29 +26,17 @@ ARM_Interface*  g_app_core      = nullptr;  ///< ARM11 application core
 ARM_Interface*  g_sys_core      = nullptr;  ///< ARM11 system (OS) core
 
 /// Run the core CPU loop
-void RunLoop() {
+void RunLoop(int tight_loop) {
-    for (;;){
+    g_app_core->Run(tight_loop);
-        // This function loops for 100 instructions in the CPU before trying to update hardware.
-        // This is a little bit faster than SingleStep, and should be pretty much equivalent. The 
-        // number of instructions chosen is fairly arbitrary, however a large number will more 
-        // drastically affect the frequency of GSP interrupts and likely break things. The point of
-        // this is to just loop in the CPU for more than 1 instruction to reduce overhead and make
-        // it a little bit faster...
-        g_app_core->Run(100);
     HW::Update();
     if (HLE::g_reschedule) {
         Kernel::Reschedule();
     }
-    }
 }
 
 /// Step the CPU one instruction
 void SingleStep() {
-    g_app_core->Step();
+    RunLoop(1);
-    HW::Update();
-    if (HLE::g_reschedule) {
-        Kernel::Reschedule();
-    }
 }
 
 /// Halt the core

src/core/core.h

@@ -19,8 +19,15 @@ extern ARM_Interface*   g_sys_core;     ///< ARM11 system (OS) core
 /// Start the core
 void Start();
 
-/// Run the core CPU loop
+/**
-void RunLoop();
+ * Run the core CPU loop
+ * This function loops for 100 instructions in the CPU before trying to update hardware. This is a
+ * little bit faster than SingleStep, and should be pretty much equivalent. The number of
+ * instructions chosen is fairly arbitrary, however a large number will more drastically affect the
+ * frequency of GSP interrupts and likely break things. The point of this is to just loop in the CPU
+ * for more than 1 instruction to reduce overhead and make it a little bit faster...
+ */
+void RunLoop(int tight_loop=100);
 
 /// Step the CPU one instruction
 void SingleStep();