System and method for runtime optimization of private variable function calls in a secure interpreter

Abstract From the Canadian patent

A secure program interpreter performs a special check the first time itexecutes a method call to determine if the sole purpose of the called method is to access the value of private variable modify the value of a private, variable or return a constant value. When this is the case the interpreter's, internal representation of the method being executed is modified so as to directly access the private variable of the called method or to directly accessthe stored constant of the called method. The modified method representation uses special "privileged" load and store instructions not, available in normal source code programs that access private variables and, constants outside the method being …