trace for quicknes

BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj

@@ -737,6 +737,7 @@
     <Compile Include="Consoles\Nintendo\QuickNES\QuickNES.IStatable.cs">
       <DependentUpon>QuickNES.cs</DependentUpon>
     </Compile>
+    <Compile Include="Consoles\Nintendo\QuickNES\QuickNES.ITraceable.cs" />
     <Compile Include="Consoles\Nintendo\QuickNES\QuickNES.IVideoProvider.cs">
       <DependentUpon>QuickNES.cs</DependentUpon>
     </Compile>

BizHawk.Emulation.Cores/Consoles/Nintendo/QuickNES/LibQuickNES.cs

@@ -215,6 +215,17 @@ namespace BizHawk.Emulation.Cores.Consoles.Nintendo.QuickNES
 		[DllImport(dllname, CallingConvention = CallingConvention.Cdecl)]
 		public static extern IntPtr qn_get_mapper(IntPtr e, ref int number);
 
+		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+		public delegate void TraceCallback(IntPtr data);
+
+		/// <summary>
+		/// set a trace callback to be run on each cycle
+		/// </summary>
+		/// <param name="e">Context</param>
+		/// <param name="cb"></param>
+		[DllImport(dllname, CallingConvention = CallingConvention.Cdecl)]
+		public static extern void qn_set_tracecb(IntPtr e, TraceCallback cb);
+
 
 
 		[DllImport(dllname, CallingConvention = CallingConvention.Cdecl)]

BizHawk.Emulation.Cores/Consoles/Nintendo/QuickNES/QuickNES.ITraceable.cs

@@ -0,0 +1,50 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+using BizHawk.Common.BufferExtensions;
+using BizHawk.Emulation.Common;
+using BizHawk.Common;
+using BizHawk.Common.CollectionExtensions;
+
+namespace BizHawk.Emulation.Cores.Consoles.Nintendo.QuickNES
+{
+	partial class QuickNES
+	{
+		public TraceBuffer Tracer { get; private set; }
+
+		private LibQuickNES.TraceCallback _tracecb;
+
+		private void MakeTrace(IntPtr data)
+		{
+			int[] s = new int[7];
+			System.Runtime.InteropServices.Marshal.Copy(data, s, 0, 7);
+
+			byte a = (byte)s[0];
+			byte x = (byte)s[1];
+			byte y = (byte)s[2];
+			ushort sp = (ushort)s[3];
+			ushort pc = (ushort)s[4];
+			byte p = (byte)s[5];
+
+			byte opcode = (byte)s[6];
+
+			Tracer.Put(string.Format("{0:X2} {1:X2} {2:X2} {3:X4} {4:X4} {5:X2} {6:X2}",
+				a, x, y, sp, pc, p, opcode));
+
+		}
+
+		private const string TraceHeader = "_A _X _Y _SP_ _PC_ _P OP";
+
+		private void ConnectTracer()
+		{
+			Tracer = new TraceBuffer
+				{
+					Header = TraceHeader
+				};
+			(ServiceProvider as BasicServiceProvider).Register<ITraceable>(Tracer);
+			_tracecb = new LibQuickNES.TraceCallback(MakeTrace);
+		}
+	}
+}

BizHawk.Emulation.Cores/Consoles/Nintendo/QuickNES/QuickNES.cs

@@ -64,6 +64,8 @@ namespace BizHawk.Emulation.Cores.Consoles.Nintendo.QuickNES
 
 					SetControllerDefinition();
 					ComputeBootGod();
+
+					ConnectTracer();
 				}
 				catch
 				{
@@ -190,6 +192,11 @@ namespace BizHawk.Emulation.Cores.Consoles.Nintendo.QuickNES
 				int j1, j2;
 				SetPads(out j1, out j2);
 
+				if (Tracer.Enabled)
+					LibQuickNES.qn_set_tracecb(Context, _tracecb);
+				else
+					LibQuickNES.qn_set_tracecb(Context, null);
+
 				Frame++;
 				LibQuickNES.ThrowStringError(LibQuickNES.qn_emulate_frame(Context, j1, j2));
 				IsLagFrame = LibQuickNES.qn_get_joypad_read_count(Context) == 0;

quicknes/bizinterface.cpp

@@ -16,6 +16,20 @@ public:
 	long size() const { return size_; }
 };
 
+// 0 filled new just for kicks
+void *operator new(std::size_t n)
+{
+	if (!n)
+		n = 1;
+	void *p = std::malloc(n);
+	std::memset(p, 0, n);
+	return p;
+}
+
+void operator delete(void *p)
+{
+	std::free(p);
+}
 
 #define EXPORT extern "C" __declspec(dllexport)
 
@@ -314,3 +328,8 @@ EXPORT void qn_peek_ppubus(Nes_Emu *e, byte *dest)
 	for (int i = 0; i < 0x3000; i++)
 		dest[i] = e->peek_ppu(i);
 }
+
+EXPORT void qn_set_tracecb(Nes_Emu *e, void (*cb)(unsigned int *dest))
+{
+	e->set_tracecb(cb);
+}

quicknes/nes_emu/Nes_Cpu.cpp

@@ -113,6 +113,11 @@ void Nes_Cpu::write( nes_addr_t addr, int value )
 	WRITE( addr, value );
 }
 
+void Nes_Cpu::set_tracecb(void (*cb)(unsigned int *data))
+{
+	tracecb = cb;
+}
+
 #ifndef NES_CPU_GLUE_ONLY
 
 static const unsigned char clock_table [256] = {
@@ -206,6 +211,19 @@ loop:
 	
 	if ( clock_count >= clock_limit )
 		goto stop;
+
+	if (tracecb)
+	{
+		unsigned int scratch[7];
+		scratch[0] = a;
+		scratch[1] = x;
+		scratch[2] = y;
+		scratch[3] = sp;
+		scratch[4] = pc;
+		scratch[5] = status;
+		scratch[6] = opcode;
+		tracecb(scratch);
+	}
 	
 	clock_count += clock_table [opcode];
 	unsigned data;

quicknes/nes_emu/Nes_Cpu.h

@@ -65,6 +65,8 @@ public:
 	
 	// One of the many opcodes that are undefined and stop CPU emulation.
 	enum { bad_opcode = 0xD2 };
+
+	void set_tracecb(void (*cb)(unsigned int *dest));
 	
 private:
 	uint8_t const* code_map [page_count + 1];
@@ -77,6 +79,8 @@ private:
 	enum { irq_inhibit = 0x04 };
 	void set_code_page( int, uint8_t const* );
 	void update_clock_limit();
+
+	void (*tracecb)(unsigned int *dest);
 	
 public:
 	registers_t r;

quicknes/nes_emu/Nes_Emu.h

@@ -214,6 +214,8 @@ public:
 	byte* pal_mem() { return emu.ppu.palette; }
 	byte* oam_mem() { return emu.ppu.spr_ram; }
 
+	void set_tracecb(void (*cb)(unsigned int *dest)) { emu.set_tracecb(cb); }
+
 	// End of public interface
 public:
 	blargg_err_t set_sample_rate( long rate, class Nes_Buffer* );