Patents by Inventor Kristof Evariste Georges BEYLS

Kristof Evariste Georges BEYLS 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).

  • Speculation with indirect control flow instructions
    Patent number: 11467842
    Abstract: There is provided input circuitry to receive input data. Output circuitry outputs a sequence of instructions to be executed by data processing circuitry. Generation circuitry performs a generation process to generate the sequence of instructions using the input data with at least some of the instructions being grouped into functions. The sequence of instructions comprises an indirect control flow instruction comprising a field that indicates where a target of the indirect control flow instruction is stored. The target is an entry point to one of the functions and the generation process causes at least one of the instructions in the sequence of instructions to store a state of control flow speculation after execution of the indirect control flow instruction.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: October 11, 2022
    Assignee: Arm Limited
    Inventors: Richard William Earnshaw, Kristof Evariste Georges Beyls, James Greenhalgh, Scott Alan Douglass
  • Maintaining state of speculation between instruction functions
    Patent number: 11263016
    Abstract: There is provided an apparatus including input circuitry that receives input data. Output circuitry outputs a sequence of instructions to be executed by data processing circuitry, at least some of the instructions being grouped into functions and generation circuitry performs a generation process to generate the sequence of instructions using the input data. The generation process causes at least one of the instructions in the sequence of instructions to store a state of control flow speculation performed during execution of the sequence of instructions and the stored state of control flow speculation is maintained between the functions.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: March 1, 2022
    Assignee: Arm Limited
    Inventors: Kristof Evariste Georges Beyls, Richard William Earnshaw, James Greenhalgh
  • Indirect control flow instructions and inhibiting data value speculation
    Patent number: 11256513
    Abstract: There is provided an apparatus that includes input circuitry to receive input data and output circuitry to output a sequence of instructions to be executed by data processing circuitry. Generation circuitry performs a generation process to generate the sequence of instructions using the input data. The sequence of instructions comprises an indirect control flow instruction having a field that indicates where a target of the indirect control flow instruction is stored. The generation process causes at least one of the instructions in the sequence of instructions to store a state of control flow speculation after execution of the indirect control flow instruction. The at least one of the instructions in the sequence of instructions that stores the state of control flow speculation is inhibited from being subject to data value speculation by the data processing circuitry.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: February 22, 2022
    Assignee: Arm Limited
    Inventors: Richard William Earnshaw, Kristof Evariste Georges Beyls, James Greenhalgh
  • INDIRECT CONTROL FLOW INSTRUCTIONS AND INHIBITING DATA VALUE SPECULATION
    Publication number: 20210149674
    Abstract: There is provided an apparatus that includes input circuitry to receive input data and output circuitry to output a sequence of instructions to be executed by data processing circuitry. Generation circuitry performs a generation process to generate the sequence of instructions using the input data. The sequence of instructions comprises an indirect control flow instruction having a field that indicates where a target of the indirect control flow instruction is stored. The generation process causes at least one of the instructions in the sequence of instructions to store a state of control flow speculation after execution of the indirect control flow instruction. The at least one of the instructions in the sequence of instructions that stores the state of control flow speculation is inhibited from being subject to data value speculation by the data processing circuitry.
    Type: Application
    Filed: March 14, 2019
    Publication date: May 20, 2021
    Applicant: Arm Limited
    Inventors: Richard William EARNSHAW, Kristof Evariste Georges BEYLS, James GREENHALGH
  • MAINTAINING STATE OF SPECULATION
    Publication number: 20210034360
    Abstract: There is provided an apparatus including input circuitry that receives input data. Output circuitry outputs a sequence of instructions to be executed by data processing circuitry, at least some of the instructions being grouped into functions and generation circuitry performs a generation process to generate the sequence of instructions using the input data. The generation process causes at least one of the instructions in the sequence of instructions to store a state of control flow speculation performed during execution of the sequence of instructions and the stored state of control flow speculation is maintained between the functions.
    Type: Application
    Filed: March 11, 2019
    Publication date: February 4, 2021
    Inventors: Kristof Evariste Georges BEYLS, Richard William EARNSHAW, James GREENHALGH
  • SPECULATION WITH INDIRECT CONTROL FLOW INSTRUCTIONS
    Publication number: 20210026957
    Abstract: There is provided input circuitry to receive input data. Output circuitry outputs a sequence of instructions to be executed by data processing circuitry. Generation circuitry performs a generation process to generate the sequence of instructions using the input data with at least some of the instructions being grouped into functions. The sequence of instructions comprises an indirect control flow instruction comprising a field that indicates where a target of the indirect control flow instruction is stored. The target is an entry point to one of the functions and the generation process causes at least one of the instructions in the sequence of instructions to store a state of control flow speculation after execution of the indirect control flow instruction.
    Type: Application
    Filed: March 14, 2019
    Publication date: January 28, 2021
    Inventors: Richard William EARNSHAW, Kristof Evariste Georges BEYLS, James GREENHALGH, Scott Alan DOUGLASS