US Patent Issued to Arm on Oct. 27 for "Stack pointer switch validity checking" (British Inventors)

ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,775,519, issued on Oct. 27, was assigned to Arm Ltd. (Cambridge, Great Britain).

"Stack pointer switch validity checking" was invented by John Michael Horley (Hauxton, Great Britain) and Simon John Craske (Cambridge, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "Processing circuitry 16 performs a stack pointer switch validity checking operation associated with a switch of the stack pointer from an outgoing stack pointer value to an incoming stack pointer value. The validity checking operation comprises verifying whether an incoming data value obtained by memory access circuitry 26 in response to a memory access request specifying an addre...