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:
Nov. 10, 2020
Filed:
Sep. 16, 2019
International Business Machines Corporation, Armonk, NY (US);
Ronald Ian McIntosh, Ontario, CA;
Roland Froese, Toronto, CA;
International Business Machines Corporation, Armonk, NY (US);
Abstract
Calling a function may include: determining whether a call is a direct or an indirect call. In response to determining that the call is an indirect call, a first address stored in a function pointer may be obtained, wherein the function pointer is stored at a first address in a stack frame of a calling function. Whether to execute a nested function call code sequence may be determined based on whether a tag bit in the first address stored in the function pointer is set. In response to determining that the tag bit in the first address is set, a second address stored at a nested function address location may be obtained, wherein the nested function address location is at the first address, and control may be transferred to a called function, wherein the called function is stored at the second address.