Patents by Inventor Le-chun Wun

Le-chun Wun has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for debugging of optimized code
    Patent number: 6263489
    Abstract: The invention is a method for debugging a machine code of a program that has been subjected to an optimizing action, wherein the machine code may have been reordered, duplicated, eliminated or transformed so as not to correspond with the program's source code order. The method derives a table which associates each machine code instruction with a source construct for which it was generated. The user sets a breakpoint at a breakpoint P in the source code where execution is to stop. Then the method determines at least one corresponding location for the breakpoint in the machine code through use of the table, and executes by native execution or emulation only machine code instructions which correspond to source constructs that precede the breakpoint in the source code order.
    Type: Grant
    Filed: April 30, 1998
    Date of Patent: July 17, 2001
    Assignee: Hewlett-Packard Company
    Inventors: Bruce A. Olsen, Le-chun Wun, Wen-mei Hwu