gpgx - support debug showing cpu flags and registers

BizHawk.Emulation.Cores/Consoles/Sega/gpgx/GPGX.cs

@@ -574,7 +574,15 @@ namespace BizHawk.Emulation.Cores.Consoles.Sega.gpgx
 
 		public Dictionary<string, int> GetCpuFlagsAndRegisters()
 		{
-			throw new NotImplementedException();
+			LibGPGX.RegisterInfo[] regs = new LibGPGX.RegisterInfo[LibGPGX.gpgx_getmaxnumregs()];
+
+			int n = LibGPGX.gpgx_getregs(regs);
+			if (n > regs.Length)
+				throw new InvalidOperationException("A buffer overrun has occured!");
+			var ret = new Dictionary<string, int>();
+			for (int i = 0; i < n; i++)
+				ret[Marshal.PtrToStringAnsi(regs[i].Name)] = regs[i].Value;
+			return ret;
 		}
 
 		public void UpdateVDPViewContext(LibGPGX.VDPView view)
@@ -674,6 +682,8 @@ namespace BizHawk.Emulation.Cores.Consoles.Sega.gpgx
 
 		#endregion
 
+		#region Settings
+
 		GPGXSyncSettings SyncSettings;
 
 		public object GetSettings() { return null; }
@@ -722,5 +732,7 @@ namespace BizHawk.Emulation.Cores.Consoles.Sega.gpgx
 				return x.UseSixButton != y.UseSixButton || x.ControlType != y.ControlType || x.Region != y.Region;
 			}
 		}
+
+		#endregion
 	}
 }

BizHawk.Emulation.Cores/Consoles/Sega/gpgx/LibGPGX.cs

@@ -253,5 +253,18 @@ namespace BizHawk.Emulation.Cores.Consoles.Sega.gpgx
 
 		[DllImport("libgenplusgx.dll", CallingConvention = CallingConvention.Cdecl)]
 		public static extern void gpgx_get_vdp_view([Out] VDPView view);
+
+		[StructLayout(LayoutKind.Sequential)]
+		public struct RegisterInfo
+		{
+			public int Value;
+			public IntPtr Name;
+		}
+
+		[DllImport("libgenplusgx.dll", CallingConvention = CallingConvention.Cdecl)]
+		public static extern int gpgx_getmaxnumregs();
+
+		[DllImport("libgenplusgx.dll", CallingConvention = CallingConvention.Cdecl)]
+		public static extern int gpgx_getregs([Out] RegisterInfo[] regs);
 	}
 }

genplus-gx/cinterface/cinterface.c

@@ -518,3 +518,93 @@ GPGX_EX void gpgx_reset(int hard)
 	else
 		gen_reset(0);
 }
+
+typedef struct
+{
+	unsigned int value;
+	const char *name;
+} register_t;
+
+GPGX_EX int gpgx_getmaxnumregs(void)
+{
+	return 57;
+}
+
+GPGX_EX int gpgx_getregs(register_t *regs)
+{
+	int ret = 0;
+
+	// 22
+#define MAKEREG(x) regs->name = "M68K " #x; regs->value = m68k_get_reg(M68K_REG_##x); regs++; ret++;
+	MAKEREG(D0);
+	MAKEREG(D1);
+	MAKEREG(D2);
+	MAKEREG(D3);
+	MAKEREG(D4);
+	MAKEREG(D5);
+	MAKEREG(D6);
+	MAKEREG(D7);
+	MAKEREG(A0);
+	MAKEREG(A1);
+	MAKEREG(A2);
+	MAKEREG(A3);
+	MAKEREG(A4);
+	MAKEREG(A5);
+	MAKEREG(A6);
+	MAKEREG(A7);
+	MAKEREG(PC);
+	MAKEREG(SR);
+	MAKEREG(SP);
+	MAKEREG(USP);
+	MAKEREG(ISP);
+	MAKEREG(IR);
+#undef MAKEREG
+
+	// 13
+#define MAKEREG(x) regs->name = "Z80 " #x; regs->value = Z80.x.d; regs++; ret++;
+	MAKEREG(pc);
+	MAKEREG(sp);
+	MAKEREG(af);
+	MAKEREG(bc);
+	MAKEREG(de);
+	MAKEREG(hl);
+	MAKEREG(ix);
+	MAKEREG(iy);
+	MAKEREG(wz);
+	MAKEREG(af2);
+	MAKEREG(bc2);
+	MAKEREG(de2);
+	MAKEREG(hl2);
+#undef MAKEREG
+
+	// 22
+	if (system_hw == SYSTEM_MCD)
+	{
+#define MAKEREG(x) regs->name = "S68K " #x; regs->value = s68k_get_reg(M68K_REG_##x); regs++; ret++;
+	MAKEREG(D0);
+	MAKEREG(D1);
+	MAKEREG(D2);
+	MAKEREG(D3);
+	MAKEREG(D4);
+	MAKEREG(D5);
+	MAKEREG(D6);
+	MAKEREG(D7);
+	MAKEREG(A0);
+	MAKEREG(A1);
+	MAKEREG(A2);
+	MAKEREG(A3);
+	MAKEREG(A4);
+	MAKEREG(A5);
+	MAKEREG(A6);
+	MAKEREG(A7);
+	MAKEREG(PC);
+	MAKEREG(SR);
+	MAKEREG(SP);
+	MAKEREG(USP);
+	MAKEREG(ISP);
+	MAKEREG(IR);
+#undef MAKEREG
+	}
+
+	return ret;
+}