gambatte: add oam, hram to memory domain list

BizHawk.Emulation/Consoles/Nintendo/Gameboy/Gambatte.cs

@@ -339,8 +339,10 @@ namespace BizHawk.Emulation.Consoles.GB
 			if (!LibGambatte.gambatte_getmemoryarea(GambatteState, which, ref data, ref length))
 				throw new Exception("gambatte_getmemoryarea() failed!");
 
-			if (data == IntPtr.Zero || length <= 0)
+			// if length == 0, it's an empty block; (usually rambank on some carts); that's ok
+			if (data == IntPtr.Zero && length > 0)
 				throw new Exception("bad return from gambatte_getmemoryarea()");
+			
 
 			MemoryRefreshers[i] = new MemoryRefresher(data, length);
 
@@ -349,17 +351,18 @@ namespace BizHawk.Emulation.Consoles.GB
 
 		void InitMemoryDomains()
 		{
-			MemoryDomains = new MemoryDomain[4];
-			MemoryRefreshers = new MemoryRefresher[4];
+			MemoryDomains = new MemoryDomain[6];
+			MemoryRefreshers = new MemoryRefresher[6];
 
-			CreateMemoryDomain(LibGambatte.MemoryAreas.rambank);
+			CreateMemoryDomain(LibGambatte.MemoryAreas.cartram);
 			CreateMemoryDomain(LibGambatte.MemoryAreas.rom);
 			CreateMemoryDomain(LibGambatte.MemoryAreas.vram);
 			CreateMemoryDomain(LibGambatte.MemoryAreas.wram);
+			CreateMemoryDomain(LibGambatte.MemoryAreas.oam);
+			CreateMemoryDomain(LibGambatte.MemoryAreas.hram);
 
 			// fixme: other code brokenly assumes that MainMemory is MemoryDomains[0]
 			// (here, we'd want it to be MemoryDomains[2])
-
 			var tmp = MemoryDomains[2];
 			MemoryDomains[2] = MemoryDomains[0];
 			MemoryDomains[0] = tmp;	

BizHawk.Emulation/Consoles/Nintendo/Gameboy/LibGambatte.cs

@@ -276,7 +276,9 @@ namespace BizHawk.Emulation.Consoles.GB
 			vram = 0,
 			rom = 1,
 			wram = 2,
-			rambank = 3,
+			cartram = 3,
+			oam = 4,
+			hram = 5
 		}
 
 		/// <summary>

libgambatte/include/gambatte.h

@@ -97,7 +97,7 @@ public:
 	int saveSavedataLength();
 	void saveSavedata(char *dest);
 	
-	// 0 = vram, 1 = rom, 2 = wram, 3 = rambank
+	// 0 = vram, 1 = rom, 2 = wram, 3 = cartram, 4 = oam, 5 = hram
 	bool getMemoryArea(int which, unsigned char **data, int *length);
 
 	/** Saves emulator state to the state slot selected with selectState().

libgambatte/src/mem/cartridge.cpp

@@ -694,8 +694,7 @@ void Cartridge::saveSavedata(char *dest) {
 	}
 }
 
-bool Cartridge::getMemoryArea(int which, unsigned char **data, int *length)
-{
+bool Cartridge::getMemoryArea(int which, unsigned char **data, int *length) {
 	if (!data || !length)
 		return false;
 
@@ -717,6 +716,7 @@ bool Cartridge::getMemoryArea(int which, unsigned char **data, int *length)
 		*data = memptrs.rambankdata();
 		*length = memptrs.rambankdataend() - memptrs.rambankdata();
 		return true;
+
 	default:
 		return false;
 	}

libgambatte/src/memory.cpp

@@ -1003,4 +1003,24 @@ void Memory::setDmgPaletteColor(unsigned palNum, unsigned colorNum, unsigned lon
 	display.setDmgPaletteColor(palNum, colorNum, rgb32);
 }
 
+bool Memory::getMemoryArea(int which, unsigned char **data, int *length) {
+	if (!data || !length)
+		return false;
+
+	switch (which)
+	{
+	case 4: // oam
+		*data = &ioamhram[0];
+		*length = 160;
+		return true;
+	case 5: // hram
+		*data = &ioamhram[384];
+		*length = 127;
+		return true;
+	default: // pass to cartridge
+		return cart.getMemoryArea(which, data, length);
+	}
+}
+
+
 }

libgambatte/src/memory.h

@@ -83,7 +83,7 @@ public:
 	void saveSavedata(char *dest) { cart.saveSavedata(dest); }
 	const std::string saveBasePath() const { return cart.saveBasePath(); }
 	
-	bool getMemoryArea(int which, unsigned char **data, int *length) { return cart.getMemoryArea(which, data, length); }
+	bool getMemoryArea(int which, unsigned char **data, int *length); // { return cart.getMemoryArea(which, data, length); }
 
 	void setOsdElement(std::auto_ptr<OsdElement> osdElement) {
 		display.setOsdElement(osdElement);