Fixed bug on entry that caused first step to trigger two stops at start.

Source/Core/Core/Src/Core.cpp

@@ -330,7 +330,8 @@ void CpuThread()
 	if(_CoreParameter.iGDBPort > 0)
 	{
 		gdb_init(_CoreParameter.iGDBPort);
-		gdb_handle_exception();
+		// break at next instruction (the first instruction)
+		gdb_break();
 	}
 	#endif
 	

Source/Core/Core/Src/PowerPC/GDBStub.cpp

@@ -633,18 +633,23 @@ static void gdb_write_mem()
 	gdb_reply("OK");
 }
 
-static void gdb_step()
+// forces a break on next instruction check
+void gdb_break()
 {
 	step_break = 1;
 	send_signal = 1;
 }
 
+static void gdb_step()
+{
+	gdb_break();
+}
+
 static void gdb_continue()
 {
 	send_signal = 1;
 }
 
-
 bool gdb_add_bp(u32 type, u32 addr, u32 len)
 {
 	gdb_bp_t *bp;

Source/Core/Core/Src/PowerPC/GDBStub.h

@@ -44,6 +44,7 @@ typedef enum {
 void gdb_init(u32 port);
 void gdb_deinit();
 bool gdb_active();
+void gdb_break();
 
 void gdb_handle_exception();
 int  gdb_signal(u32 signal);