Patents by Inventor Daniel Paul Schostak

Daniel Paul Schostak 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).

  • Pre-decode checking for pre-decoded instructions that cross cache line boundaries
    Patent number: 7925867
    Abstract: A data processing and method are provided for pre-decoding instructions. The data processing apparatus has pre-decoding circuitry for receiving instructions fetched from a memory and for performing a pre-decoding operation to generate corresponding pre-decoded instructions, which are then stored in the cache for access by the processing circuitry. If a pre-decoded instruction crosses a cache line boundary, then checking circuitry in respect of selected types of pre-decoded instruction checks for consistency between the first portion of the pre-decoded instruction stored within a first cache line and a contiguous second portion of the pre-decoded instruction stored within a second cache line. If this consistency check is passed such that the two portions are self-consistent, then the pre-decoded instruction can be further decoded and issued.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: April 12, 2011
    Assignee: ARM Limited
    Inventors: Peter Richard Greenhalgh, Max Zardini, Allan John Skillman, Daniel Paul Schostak
  • Pre-decode checking for pre-decoded instructions that cross cache line boundaries
    Publication number: 20100017580
    Abstract: A data processing and method are provided for pre-decoding instructions. The data processing apparatus has pre-decoding circuitry for receiving instructions fetched from a memory and for performing a pre-decoding operation to generate corresponding pre-decoded instructions, which are then stored in the cache for access by the processing circuitry. If a pre-decoded instruction crosses a cache line boundary, then checking circuitry in respect of selected types of pre-decoded instruction checks for consistency between the first portion of the pre-decoded instruction stored within a first cache line and a contiguous second portion of the pre-decoded instruction stored within a second cache line. If this consistency check is passed such that the two portions are self-consistent, then the pre-decoded instruction can be further decoded and issued.
    Type: Application
    Filed: July 14, 2009
    Publication date: January 21, 2010
    Inventors: Peter Richard Greenhalgh, Max Zardini, Allan John Skillman, Daniel Paul Schostak