Re-adding support for traceback

source/quickerNES/core/cpu.cpp

@@ -262,6 +262,22 @@ loop:
  
  if ( clock_count >= clock_limit ) [[unlikely]] goto stop;
 
+  // If traceback support is enabled, trigger it here
+  #ifdef _QUICKERNES_ENABLE_TRACEBACK_SUPPORT
+  if (tracecb)
+	{
+		unsigned int scratch[7];
+		scratch[0] = a;
+		scratch[1] = x;
+		scratch[2] = y;
+		scratch[3] = sp;
+		scratch[4] = pc - 1;
+		scratch[5] = status;
+		scratch[6] = opcode;
+		tracecb(scratch);
+	}
+  #endif
+
  clock_count += clock_table [opcode];
 
  switch ( opcode )

source/quickerNES/core/cpu.hpp

@@ -14,6 +14,14 @@ typedef unsigned nes_addr_t; // 16-bit address
 class Cpu
 {
   public:
+
+  void set_tracecb(void (*cb)(unsigned int *data))
+  {
+    tracecb = cb;
+  }
+
+  void (*tracecb)(unsigned int *dest);
+
   // NES 6502 registers. *Not* kept updated during a call to run().
   struct registers_t
   {

source/quickerNES/core/emu.hpp

@@ -45,6 +45,7 @@ class Emu
   const uint8_t *getHostPixels() const { return emu.ppu.host_pixels; }
 
   int get_joypad_read_count() const { return emu.joypad_read_count; }
+  void set_tracecb(void (*cb)(unsigned int *dest)) { emu.set_tracecb(cb); }
   
 // Save emulator state variants
   void serializeState(jaffarCommon::serializer::Base& serializer) const { emu.serializeState(serializer); }