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:
Oct. 02, 2018
Filed:
Mar. 21, 2013
Applicant:
Vmware, Inc., Palo Alto, CA (US);
Inventors:
Radu Rugina, Sunnyvale, CA (US);
Ricardo E. Gonzalez, Portola Valley, CA (US);
Zheng He, Beijing, CN;
Alok Kataria, Sunnyvale, CA (US);
Assignee:
VMware, Inc., Palo Alto, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 9/455 (2018.01); G06F 9/48 (2006.01); G06F 11/34 (2006.01);
U.S. Cl.
CPC ...
G06F 9/45525 (2013.01); G06F 9/45545 (2013.01); G06F 9/4812 (2013.01); G06F 11/3466 (2013.01); G06F 11/3409 (2013.01); G06F 2201/815 (2013.01); G06F 2201/865 (2013.01);
Abstract
Function exits are instrumented in tail-call optimized code in which calls to target functions and return instructions are replaced by jump instructions. A probe engine identifies a tail-call jump and instruments the jumps to raise an exception. In response to an exception raised at the tail-call jump, an exception handler loads various registers and transferring control to a trampoline, which calls the jump target. After the target function returns, an exit probe is fired when the trampoline itself returns.