US 7,607,120 B2Granted

Method and apparatus for creating data transformation routines for binary data

AssigneeHewlett-Packard Development Company, L.P.

InventorsDibyapran Sanyal, Arijit Chatterjee, Keerthi K N Bhushan

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Abstract

A method and apparatus is disclosed for creating data transformation routines for transforming data from a source format to a target format. The routines can be used in conjunction with dynamic binary translators, which enable binaries of a source platform to execute on a target platform without recompilation. This is achieved by runtime (on-the-fly) translation of source machine instructions into equivalent target machine instructions. Typically dynamic binary translators are used for migrating from an older platform to a newer one, implementing complex instruction set architectures, speeding up simulators and in profiling tools. The transformation routines are also used for translating data in databases from one format to another, for example, where the data format has been modified in an upgraded system. In all these applications, the speed and accuracy of translation need to be kept low to ensure that the overhead incurred does not outweigh the advantages of translation.

Claims13

Dependent claims

A method to create data transformation routines for binary data to transform said data from a source format to a target format, the method comprising the steps of:

a) generating a source model of a source format element;
b) generating a target model of a target format element;
c) generating a mapping between said source model and said target model, wherein the mapping accounts for differences in endianness between the source and target models, wherein target models generate a plurality of target elements and the mapping generated between the source model and said plurality of target models, and wherein the source models generate a plurality of target elements and the mapping generated between said plurality of source models and said target model;
and
d) generating a transformation routine based on said mapping for extracting data from said source element and depositing said data in said target element, wherein the transformation routine is arranged to transform data in software code instructions from a source format code to a target format code and the transformation routine are generated in said target format code, and wherein the transformation routine is associated with a template providing a set of target format instruction semantically equivalent to said identified source instruction.

2 more elements

Dependencies are inferred from the claim text.