Shulou(Shulou.com)06/02 Report--

This article shows you what the VCS coverage check is under Linux. The content is concise and easy to understand. It will definitely brighten your eyes. I hope you can get something through the detailed introduction of this article.

In a chip verification project, code coverage and functional coverage are usually used to reflect the completeness of verification, and code coverage includes: line, state machine, flip, condition, branch coverage. In order to ensure the adequacy of verification, we need to ensure that the coverage of these five types of code reaches 100% as far as possible.

Line coverage line coverage requires 99-100%

State machine coverage FSM coverage

Conditional coverage conditional coverage

Flip coverage Toggle coverage: 0-> 1, 1-> 0

Path coverage Path coverage: statements in initial and always

Branch coverage branch coverage

-coverage of the conditions under which cm line+cond+fsm+branch+tgl is generated

Coverage script in Makefile file:

Execute vcs

The resulting .vdb file is information that generates coverage.

Step by step into cd, you can see the coverage file.

To check the coverage, enter the following command dve-covdir * .vdb &

Pop up the DVE interface and view coverage through DVE (method 1)

Double-click tb_state to enter, you can see that the code will be color-marked, covered in green, and uncovered in red

Line coverage

Toggle coverage

FSM coverage

Condition coverage

Branch coverage

View coverage through URG (method 2), which can be displayed in text format or web format

Click run to generate urgReport

Or on the command line urg-dir * .vdb &

After ls, you can see that urgReport,cd goes in and you can see the .html file and the .xml file.

A very detailed coverage report will be displayed

Tb file:

Module file

The above content is what is the VCS coverage check under Linux? have you learned any knowledge or skills? If you want to learn more skills or enrich your knowledge reserve, you are welcome to follow the industry information channel.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.