[Gambatte] Many Updates (#2742)

* don't put isCGBMode for movies where CgbDmg mode is being used

* various Gambatte accuracy improvements + proper no BIOS support + tracelogger fixes

.gitignore

@@ -14,6 +14,8 @@
 **/ipch/**
 /Assets/dll/*.exp
 /Assets/dll/*.lib
+/Assets/dll/*.iobj
+/Assets/dll/*.ipdb
 
 *.ilk
 *.il

src/BizHawk.Client.Common/movie/MovieConversionExtensions.cs

@@ -264,9 +264,9 @@ namespace BizHawk.Client.Common
 
 			if (emulator is Gameboy gb)
 			{
-				if (gb.IsCGBMode())
+				if (gb.IsCGBMode())	
 				{
-					movie.HeaderEntries.Add("IsCGBMode", "1");
+					movie.HeaderEntries.Add(gb.IsCGBDMGMode() ? "IsCGBDMGMode" : "IsCGBMode", "1");
 				}
 
 				movie.HeaderEntries.Add(HeaderKeys.CycleCount, "0");

src/BizHawk.Client.EmuHawk/config/GB/GBPrefs.cs

@@ -24,7 +24,7 @@ namespace BizHawk.Client.EmuHawk
 
 			using var dlg = new GBPrefs(mainForm.DialogController);
 			dlg.gbPrefControl1.PutSettings(config, game, movieSession, s, ss);
-			dlg.gbPrefControl1.ColorGameBoy = gb.IsCGBMode();
+			dlg.gbPrefControl1.ColorGameBoy = gb.IsCGBMode() && (!gb.IsCGBDMGMode() || ss.EnableBIOS);
 			if (mainForm.ShowDialogAsChild(dlg).IsOk())
 			{
 				dlg.gbPrefControl1.GetSettings(out s, out ss);

src/BizHawk.Emulation.Cores/Consoles/Nintendo/Gameboy/Gambatte.ISettable.cs

@@ -19,7 +19,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
 		{
 			_settings = o;
 			_disassembler.UseRGBDSSyntax = _settings.RgbdsSyntax;
-			if (IsCGBMode())
+			if (IsCGBMode() && (!IsCGBDMGMode() || _syncSettings.EnableBIOS))
 			{
 				SetCGBColors(_settings.CGBColors);
 			}
@@ -96,7 +96,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
 		public class GambatteSyncSettings
 		{
 			[DisplayName("Use official Nintendo BootROM")]
-			[Description("Uses a provided official BootROM (or \"BIOS\") instead of built-in unofficial firmware. You must provide the BootROM. Should be used for TASing.")]
+			[Description("When false, hacks are used to boot without a BIOS. When true, a provided official BootROM (or \"BIOS\") is used. You must provide the BootROM. Should be used for TASing.")]
 			[DefaultValue(false)]
 			public bool EnableBIOS { get; set; }
 

src/BizHawk.Emulation.Cores/Consoles/Nintendo/Gameboy/Gambatte.ITraceable.cs

@@ -20,12 +20,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
 				Disassembly =
 					LR35902.Disassemble(
 						(ushort) s[1],
-						addr => LibGambatte.gambatte_cpuread(GambatteState, addr),
+						addr => (addr == (ushort)s[1]) ? (byte)((s[12] >> 16) & 0xFF) : ((addr == (ushort)s[1] + 1) ? (byte)((s[12] >> 8) & 0xFF) : (byte)(s[12] & 0xFF)),
 						_settings.RgbdsSyntax,
 						out _).PadRight(36),
 				RegisterInfo =
 					string.Format(
-					"A:{3:x2} B:{4:x2} C:{5:x2} D:{6:x2} E:{7:x2} F:{8:x2} H:{9:x2} L:{10:x2} LY:{13:x2} SP:{2:x2} {11} Cy:{0}",
+					"A:{3:x2} F:{8:x2} B:{4:x2} C:{5:x2} D:{6:x2} E:{7:x2} H:{9:x2} L:{10:x2} LY:{13:x2} SP:{2:x2} {11} Cy:{0}",
 					s[0],
 					s[1] & 0xffff,
 					s[2] & 0xffff,
@@ -38,7 +38,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
 					s[9] & 0xff,
 					s[10] & 0xff,
 					s[11] != 0 ? "skip" : "",
-					s[12] & 0xff,
+					s[12] & 0xffffff,
 					s[13] & 0xff)
 			});
 		}

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

@@ -71,11 +71,6 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
 					flags |= LibGambatte.LoadFlags.MULTICART_COMPAT;
 				}
 
-				if (LibGambatte.gambatte_load(GambatteState, file, (uint)file.Length, flags) != 0)
-				{
-					throw new InvalidOperationException($"{nameof(LibGambatte.gambatte_load)}() returned non-zero (is this not a gb or gbc rom?)");
-				}
-
 				byte[] bios;
 				string biosSystemId;
 				string biosId;
@@ -95,21 +90,19 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
 				if (_syncSettings.EnableBIOS)
 				{
 					bios = comm.CoreFileProvider.GetFirmware(biosSystemId, biosId, true, "BIOS Not Found, Cannot Load.  Change SyncSettings to run without BIOS.");
+					if (LibGambatte.gambatte_loadbios(GambatteState, bios, (uint)bios.Length) != 0)
+					{
+						throw new InvalidOperationException($"{nameof(LibGambatte.gambatte_loadbios)}() returned non-zero (bios error)");
+					}
 				}
 				else
 				{
-					var builtinBios = (biosSystemId, biosId) switch {
+					flags |= LibGambatte.LoadFlags.NO_BIOS;
-						("GB", "World") => Resources.FastDmgBoot,
-						("GBC", "World") => Resources.FastCgbBoot,
-						("GBC", "AGB") => Resources.FastAgbBoot,
-						(_, _) => throw new Exception("Internal GB Error (BIOS??)"),
-					};
-					bios = BizHawk.Common.Util.DecompressGzipFile(new MemoryStream(builtinBios.Value, false));
 				}
 
-				if (LibGambatte.gambatte_loadbios(GambatteState, bios, (uint)bios.Length) != 0)
+				if (LibGambatte.gambatte_load(GambatteState, file, (uint)file.Length, flags) != 0)
 				{
-					throw new InvalidOperationException($"{nameof(LibGambatte.gambatte_loadbios)}() returned non-zero (bios error)");
+					throw new InvalidOperationException($"{nameof(LibGambatte.gambatte_load)}() returned non-zero (is this not a gb or gbc rom?)");
 				}
 
 				// set real default colors (before anyone mucks with them at all)
@@ -259,6 +252,14 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
 			//return LibGambatte.gambatte_iscgb(GambatteState);
 			return IsCgb;
 		}
+		
+		/// <summary>
+		/// true if the emulator is currently emulating CGB in DMG compatibility mode (NOTE: this mode does not take affect until the bootrom unmaps itself)
+		/// </summary>
+		public bool IsCGBDMGMode()
+		{
+			return LibGambatte.gambatte_iscgbdmg(GambatteState);
+		}
 
 		private InputCallbackSystem _inputCallbacks = new InputCallbackSystem();
 

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

@@ -25,7 +25,9 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
 			/// <summary>Use GBA intial CPU register values when in CGB mode.</summary>
 			GBA_FLAG = 2,
 			/// <summary>Use heuristics to detect and support some multicart MBCs disguised as MBC1.</summary>
-			MULTICART_COMPAT = 4
+			MULTICART_COMPAT = 4,
+			/// <summary>Use heuristics to boot without a BIOS.</summary>
+			NO_BIOS = 8
 		}
 
 		public enum CDLog_AddrType : int
@@ -284,6 +286,13 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
 		[DllImport("libgambatte.dll", CallingConvention = CallingConvention.Cdecl)]
 		public static extern bool gambatte_iscgb(IntPtr core);
 
+		/// <summary>
+		/// Returns true if the currently loaded ROM image is treated as having CGB-DMG support.
+		/// </summary>
+		/// <param name="core">opaque state pointer</param>
+		[DllImport("libgambatte.dll", CallingConvention = CallingConvention.Cdecl)]
+		public static extern bool gambatte_iscgbdmg(IntPtr core);
+
 		/// <summary>
 		/// Returns true if a ROM image is loaded.
 		/// </summary>

submodules/gambatte

@@ -1 +1 @@
-Subproject commit b9a38d535aa17223006e1913b507fc333a10b037
+Subproject commit b5eab7d3893d009390a90c48fb418df4f52522f2