Using data watchpoints to detect unitialized memory reads

Patent metadata

Field	Value
Publication number	US-8977916-B2
Application number	US-201213693484-A
Country	US
Kind code	B2
Filing date	Dec 4, 2012
Priority date	Dec 4, 2012
Publication date	Mar 10, 2015
Grant date	Mar 10, 2015

Abstract

A method of detecting uninitialized memory reads is shown where either all or a subset of a random access memory system is initialized to a know value. One or more watch points are implemented where after a memory read is detected the value read is compared to the value written during initialization. If the values match debug information is captured and appropriate corrective action is taken.

First claim

What is claimed is:

1. A method of detecting central processing unit (CPU) memory read requests from an uninitialized location in a random access memory system comprising the steps of:
writing a predetermined data value into each memory location of the random access memory system under test;
detecting each data read request operation from the random access memory system;
comparing the data read during the memory read operation to the predetermined data value previously written…

Assignees

• Texas Instruments Inc

Inventors

• Peck Jason L

Classifications

• G06F11/07 Primary

  Physics · mapped topic

• G06F11/0751

  Physics · mapped topic

• G06F11/073

  Physics · mapped topic

• G06F11/366 Primary

  Physics · mapped topic