Patent · US Active

Behavior of trace in non-emulatable code

US7797686B2 · kind B2 · utility

9Cited by

9References

4Claims

0Family size

Assignee

TEXAS INSTRUMENTS INCORPORATED · US

Inventors

Manisha Agarwala · Richardson, US
Gary L. Swoboda · Sugar Land, US

Key dates

Filing date	May 16, 2006
Grant date	Sep 14, 2010
Priority date	—
Expiry date	Jun 15, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG06F21/52
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Code will switch to secure code via an exception only. All PC and data trace will be turned off during secure code. This will occur regardless of trace being in standard trace mode or event profiling mode. Timing, if on, will switch to standby mode. On return from the secure code, the switches that were already on will switch back and turn on. The address reported in the end sync point will be the address 0x01. Since this is an illegal address, this information is sufficient to indicate an end sync point was caused in secure code.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.