The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 22, 2022
Filed:
Mar. 14, 2019
Arm Limited, Cambridge, GB;
Richard William Earnshaw, Fulbourn, GB;
Kristof Evariste Georges Beyls, Ghent, BE;
James Greenhalgh, Cambridge, GB;
Arm Limited, Cambridge, GB;
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.