add a bunch of code

src/frontend/FrontendUtil.h

@@ -21,10 +21,44 @@
 
 #include "types.h"
 
-namespace FrontendUtil
+namespace Frontend
 {
 
-//
+enum
+{
+    ROMSlot_NDS = 0,
+    ROMSlot_GBA,
+
+    ROMSlot_MAX
+};
+
+extern char ROMPath [ROMSlot_MAX][1024];
+extern char SRAMPath[ROMSlot_MAX][1024];
+extern bool SavestateLoaded;
+
+
+// initialize the ROM handling utility
+void Init_ROM();
+
+// load a ROM file to the specified cart slot
+// note: loading a ROM to the NDS slot resets emulation
+bool LoadROM(char* file, int slot);
+
+// get the filename associated with the given savestate slot
+void GetSavestateName(int slot, char* filename, int len);
+
+// determine whether the given savestate slot does contain a savestate
+bool SavestateExists(int slot);
+
+// load the given savestate file
+// if successful, emulation will continue from the savestate's point
+bool LoadState(const char* filename);
+
+// save the current emulator state to the given file
+bool SaveState(const char* filename);
+
+// undo the latest savestate load
+void UndoStateLoad();
 
 }