changes to pygen

src/spider/runtime/cpu/CPU.hpp

@@ -16,9 +16,10 @@ namespace spider {
         static constexpr const u64 FLAG_EXCEPTION         = 0b0000000000000000000000000000000000000000000000000000000000001000;
         static constexpr const u64 FLAG_MEMORY_MODE       = 0b0000000000000000000000000000000000000000000000000000000000110000;
 
-    public: // Map of addressing modes
+    public: // Map of addressing modes & Instructions
 
         static CPU::Fn addrModes[];
+        static CPU::Fn instrMap[];
 
     public: // General Purpose Registers
         union {
@@ -61,7 +62,7 @@ namespace spider {
         };
 
         // Holds the current instruction opcode
-        u16 _instr : 9;
+        u16 _opcode : 9;
 
         // Holds the current addressing modes,
         // before they were used
@@ -163,6 +164,23 @@ namespace spider {
          */
         void fetchOperSrc();
 
+        /**
+         * Executes an opcode, by means of directly
+         * accessing the instruction map and
+         * calling that function pointer.
+         */
+        void execute();
+
+        /**
+         * Executes an opcode, by means of using
+         * a large switch statement. Only suitable
+         * for environments where the instruction
+         * map is not possible.
+         * 
+         * This has yet to be proved!!!
+         */
+        void executeSwLk();
+
     public: // Addressing Modes
 
         /**
@@ -862,4 +880,4 @@ namespace spider {
 
     };
 
-}
+}