| Patent application number | Description | Published |
|---|
| 20090070374 | Generating Incremental Program Updates - A method of generating a delta file, the delta file including update instructions for causing a target processing device to transform a current memory image module into an updated memory image module. The method includes: incorporating a parametric representation of a first memory address in the delta file, the parametric representation being parametric with respect to at least one parameter; and incorporating parameter resolution instructions in the delta file, wherein the parameter resolution instructions are adapted to cause the target processing device to determine a value of said at least one parameter and to determine an address value of the first memory address from the parametric representation and the determined value of said at least one parameter. | 03-12-2009 |
| 20090113386 | OBJECT CODE GENERATION FOR INCREASED DELTA PERFORMANCE - Disclosed is a method of generating updated object code of a computer program, the updated object code being suitable for the generation of an updated memory image to be loaded into a storage medium having stored thereon a current memory image corresponding to a current version of a computer program. The method comprises receiving at least one updated input code module from which the updated object code is to be generated; processing at least the updated input code module to generate at least one updated object code module adapted to be linked by a linker component as to generate the updated memory image; performing at least one optimisation process to reduce differences between said updated object code module and a corresponding one of a number of current object code modules, the number of current object code modules corresponding to the current version of said computer program. | 04-30-2009 |
| 20090172338 | FEEDBACK LINKER FOR INCREASED DELTA PERFORMANCE - A method, system and program for generating an updated memory image including updated program code to be loaded into a storage medium that has stored thereon a current memory image including a current program code version. The method comprises receiving an updated input code comprising a number of segments, wherein each segment is relocatable within the updated memory image; arranging the segments within the updated memory image. The arranging further comprises receiving a representation of the current program code version; performing at least one optimization step adapted to decrease an objective function under at least one predetermined layout constraint, the objective function being indicative of a magnitude of differences between the current program code version and the updated program code version, the layout constraint being indicative of at least one constraint imposed on the arrangement of segments within the memory image. | 07-02-2009 |
| 20100186024 | System and Method of Invoking Multiple Remote Operations - A remote execution agent, having low-latency access to the platform, receives from a remote application, across a communication channel imposing a round-trip delay, a plurality of invocation control directives. The remote execution agent invokes operations for execution on the platform in response to the invocation control directives, and aggregates results from the operations, returning the aggregated results to the application. In this manner, overhead such as communication round-trip delay, context switching, and the like, is reduced, compared to the application sending separate operation invocation requests to the platform and receiving the results of each. The remote execution agent manages operation results, such as passing results from a prior operation as parameters for a later one. In some embodiments, the invocation control directives include conditional operation invocation and branching. | 07-22-2010 |
| 20100199354 | Obfuscating Computer Program Code - A computer-implemented method of tamper-protecting computer program code. The method comprises: obtaining an input representation of the computer program code; identifying a conditional program statement for causing a data processing system to selectively execute one of at least a first and a second sets of program statements when said computer program is executed by a data processing system; replacing said identified conditional program statement and the first and second sets of program statements with a set of transformed program statements to obtain obfuscated program code, wherein the set of transformed program statements is adapted to cause the data processing system to execute at least a part of each of the transformed program statements when said computer program is executed by the data processing system. | 08-05-2010 |
| 20100251378 | Obfuscating Computer Program Code - A computer-implemented method of tamper-protecting a computer program, the method comprising: processing an input representation of the computer program to identify a function call for causing a data processing system to continue execution of the computer program at a predetermined entry point memory address when said computer program is executed by a data processing system; replacing the identified function call with a modified function call, wherein the modified function call includes an algebraic expression for causing the data processing system to compute the entry point memory address when said computer program is executed by the data processing system. | 09-30-2010 |
| 20100262839 | Obfuscating Execution Traces of Computer Program Code - A computer-implemented method of generating tamper-protected computer program code. The method comprises obtaining a representation of the computer program code, the computer program being adapted to cause a data processing system to perform a plurality of computational tasks in a first order of execution, each computational task being represented in the representation of the computer program code by at least one program statement; obtaining a plurality of alternative orders of execution of the computational tasks; generating an executable representation of the program code adapted to cause a data processing system to select a randomized order of execution from the plurality of alternative orders of execution and to execute the computational tasks in the selected randomized order of execution. | 10-14-2010 |
