Add vm_finalize() to clean program pointer for embed systems

JerryScript-DCO-1.0-Signed-off-by: SaeHie Park saehie.park@samsung.com

Author: seanshpark

jerry-core/jerry.cpp

@@ -1171,6 +1171,7 @@ jerry_cleanup (void)
   ecma_finalize ();
   serializer_free ();
   mem_finalize (is_show_mem_stats);
+  vm_finalize ();
 } /* jerry_cleanup */
 
 /**

jerry-core/vm/vm.cpp

@@ -350,6 +350,15 @@ vm_init (const opcode_t *program_p, /**< pointer to byte-code program */
   __program = program_p;
 } /* vm_init */
 
+/**
+ * Cleanup interpreter
+ */
+void
+vm_finalize (void)
+{
+  __program = NULL;
+} /* vm_finalize */
+
 /**
  * Run global code
  */

jerry-core/vm/vm.h

@@ -21,6 +21,7 @@
 #include "opcodes.h"
 
 extern void vm_init (const opcode_t* program_p, bool dump_mem_stats);
+extern void vm_finalize (void);
 extern jerry_completion_code_t vm_run_global (void);
 extern ecma_completion_value_t vm_loop (int_data_t *int_data);
 extern ecma_completion_value_t vm_run_from_pos (opcode_counter_t start_pos,